MiCOM P220 TechnicalGuide En

MiCOM P220 Motor protection

Technical Guide P220/EN T/B43

Technical Guide MiCOM P220

P220/EN T/B43 Page 1/2

MOTOR PROTECTION MiCOM P220 CONTENT Safety Section

Pxxxx/EN SS/B11

Getting Started

P220/EN GS/B43

Connection Diagram

P220/EN CO/B43

Technical Data

P220/EN TD/B43

Application Guide

P220/EN AP/B43

User Guide

P220/EN FT/B43

Menu of the HMI

P220/EN HI/B43

Communication

P220/EN GC/B43

Default Setting Value

P220/EN SV/B43

Installation Guide

P220/EN IN/B43

Commissioning and Maintenance

P220/EN CM/B43

Test Report

P220/EN RS/B43

P220/EN T/B43

Technical Guide

Page 2/2

MiCOM P220

BLANK PAGE

Pxxxx/EN SS/B11

SAFETY SECTION

Pxxxx/EN SS/B11 Safety Section

Page 1/10

CONTENTS 1.

INTRODUCTION

3

2.

HEALTH AND SAFETY

3

3.

SYMBOLS AND EXTERNAL LABELS ON THE EQUIPMENT

4

3.1

Symbols

4

3.2

Labels

4

4.

INSTALLING, COMMISSIONING AND SERVICING

4

5.

DECOMMISSIONING AND DISPOSAL

7

6.

EQUIPMENT WHICH INCLUDES ELECTROMECHANICAL ELEMENTS

7

7.

TECHNICAL SPECIFICATIONS FOR SAFETY

7

7.1

Protective fuse rating

7

7.2

Protective Class

7

7.3

Installation Category

7

7.4

Environment

8

8.

CE MARKING

8

9.

RECOGNIZED AND LISTED MARKS FOR NORTH AMERICA

9

Pxxxx/EN SS/B11 Page 2/10

Safety Section

BLANK PAGE

Pxxxx/EN SS/B11 Safety Section

1.

Page 3/10

INTRODUCTION This guide and the relevant operating or service manual documentation for the equipment provide full information on safe handling, commissioning and testing of this equipment and also includes descriptions of equipment label markings. Documentation for equipment ordered from AREVA Energy Automation & Information is despatched separately from manufactured goods and may not be received at the same time. Therefore this guide is provided to ensure that printed information normally present on equipment is fully understood by the recipient. Before carrying out any work on the equipment the user should be familiar with the contents of this Safety Guide. Reference should be made to the external connection diagram before the equipment is installed, commissioned or serviced. Language specific, self-adhesive User Interface labels are provided in a bag for some equipment.

2.

HEALTH AND SAFETY The information in the Safety Section of the equipment documentation is intended to ensure that equipment is properly installed and handled in order to maintain it in a safe condition. It is assumed that everyone who will be associated with the equipment will be familiar with the contents of that Safety Section, or this Safety Guide. When electrical equipment is in operation, dangerous voltages will be present in certain parts of the equipment. Failure to observe warning notices, incorrect use, or improper use may endanger personnel and equipment and cause personal injury or physical damage. Before working in the terminal strip area, the equipment must be isolated. Proper and safe operation of the equipment depends on appropriate shipping and handling, proper storage, installation and commissioning, and on careful operation, maintenance and servicing. For this reason only qualified personnel may work on or operate the equipment. Qualified personnel are individuals who • are familiar with the installation, commissioning, and operation of the equipment and of the system to which it is being connected; • are able to safely perform switching operations in accordance with accepted safety engineering practices and are authorised to energize and de-energize equipment and to isolate, ground, and label it; • are trained in the care and use of safety apparatus in accordance with safety engineering practices; • are trained in emergency procedures (first aid). The operating manual for the equipment gives instructions for its installation, commissioning, and operation. However, the manual cannot cover all conceivable circumstances or include detailed information on all topics. In the event of questions or specific problems, do not take any action without proper authorization. Contact the appropriate AREVA technical sales office and request the necessary information.

Pxxxx/EN SS/B11 Page 4/10

3.

Safety Section

SYMBOLS AND EXTERNAL LABELS ON THE EQUIPMENT For safety reasons the following symbols and external labels, which may be used on the equipment or referred to in the equipment documentation, should be understood before the equipment is installed or commissioned.

3.1

Symbols

Caution: refer to equipment documentation

Caution: risk of electric shock

Protective Conductor (*Earth) terminal.

Functional/Protective Conductor Earth terminal Note – This symbol may also be used for a Protective Conductor (Earth) terminal if that terminal is part of a terminal block or sub-assembly e.g. power supply. *NOTE: 3.2

THE TERM EARTH USED THROUGHOUT THIS GUIDE IS THE DIRECT EQUIVALENT OF THE NORTH AMERICAN TERM GROUND.

Labels See "Safety Guide" (SFTY/4L M) for equipment labelling information.

4.

INSTALLING, COMMISSIONING AND SERVICING Equipment connections Personnel undertaking installation, commissioning or servicing work for this equipment should be aware of the correct working procedures to ensure safety. The equipment documentation should commissioning or servicing the equipment.

be

consulted

before

installing,

Terminals exposed during installation, commissioning and maintenance may present a hazardous voltage unless the equipment is electrically isolated. Any disassembly of the equipment may expose parts at hazardous voltage, also electronic parts may be damaged if suitable electrostatic voltage discharge (ESD) precautions are not taken. If there is unlocked access to the rear of the equipment, care should be taken by all personnel to avoid electric shock or energy hazards. Voltage and current connections should be made using insulated crimp terminations to ensure that terminal block insulation requirements are maintained for safety. To ensure that wires are correctly terminated the correct crimp terminal and tool for the wire size should be used. The equipment must be connected in accordance with the appropriate connection diagram.

Pxxxx/EN SS/B11 Safety Section

Page 5/10 Protection Class I Equipment -

Before energising the equipment it must be earthed using the protective conductor terminal, if provided, or the appropriate termination of the supply plug in the case of plug connected equipment.

-

The protective conductor (earth) connection must not be removed since the protection against electric shock provided by the equipment would be lost.

The recommended minimum protective conductor (earth) wire size is 2.5 mm² (3.3 mm² for North America) unless otherwise stated in the technical data section of the equipment documentation, or otherwise required by local or country wiring regulations. The protective conductor (earth) connection must be low-inductance and as short as possible. All connections to the equipment must have a defined potential. Connections that are pre-wired, but not used, should preferably be grounded when binary inputs and output relays are isolated. When binary inputs and output relays are connected to common potential, the pre-wired but unused connections should be connected to the common potential of the grouped connections. Before energising the equipment, the following should be checked: -

Voltage rating/polarity (rating label/equipment documentation);

-

CT circuit rating (rating label) and integrity of connections;

-

Protective fuse rating;

-

Integrity of the protective conductor (earth) connection (where applicable);

-

Voltage and current rating of external wiring, applicable to the application.

Equipment Use If the equipment is used in a manner not specified by the manufacturer, the protection provided by the equipment may be impaired. Removal of the equipment front panel/cover Removal of the equipment front panel/cover may expose hazardous live parts which must not be touched until the electrical power is removed. UL and CSA Listed or Recognized Equipment To maintain UL and CSA approvals the equipment should be installed using UL and/or CSA Listed or Recognized parts of the following type: connection cables, protective fuses/fuseholders or circuit breakers, insulation crimp terminals, and replacement internal battery, as specified in the equipment documentation. Equipment operating conditions The equipment should be operated within the specified electrical and environmental limits. Current transformer circuits Do not open the secondary circuit of a live CT since the high voltage produced may be lethal to personnel and could damage insulation. Generally, for safety, the secondary of the line CT must be shorted before opening any connections to it. For most equipment with ring-terminal connections, the threaded terminal block for current transformer termination has automatic CT shorting on removal of the module. Therefore external shorting of the CTs may not be required, the equipment documentation should be checked to see if this applies. For equipment with pin-terminal connections, the threaded terminal block for current transformer termination does NOT have automatic CT shorting on removal of the module.

Pxxxx/EN SS/B11 Page 6/10

Safety Section External resistors, including voltage dependent resistors (VDRs) Where external resistors, including voltage dependent resistors (VDRs), are fitted to the equipment, these may present a risk of electric shock or burns, if touched. Battery replacement Where internal batteries are fitted they should be replaced with the recommended type and be installed with the correct polarity to avoid possible damage to the equipment, buildings and persons. Insulation and dielectric strength testing Insulation testing may leave capacitors charged up to a hazardous voltage. At the end of each part of the test, the voltage should be gradually reduced to zero, to discharge capacitors, before the test leads are disconnected. Insertion of modules and pcb cards Modules and pcb cards must not be inserted into or withdrawn from the equipment whilst it is energised, since this may result in damage. Insertion and withdrawal of extender cards Extender cards are available for some equipment. If an extender card is used, this should not be inserted or withdrawn from the equipment whilst it is energised. This is to avoid possible shock or damage hazards. Hazardous live voltages may be accessible on the extender card. Insertion and withdrawal of integral heavy current test plugs It is possible to use an integral heavy current test plug with some equipment. CT shorting links must be in place before insertion or removal of heavy current test plugs, to avoid potentially lethal voltages. External test blocks and test plugs Great care should be taken when using external test blocks and test plugs such as the MMLG, MMLB and MiCOM P990 types, hazardous voltages may be accessible when using these. *CT shorting links must be in place before the insertion or removal of MMLB test plugs, to avoid potentially lethal voltages. *Note – when a MiCOM P992 Test Plug is inserted into the MiCOM P991 Test Block, the secondaries of the line CTs are automatically shorted, making them safe. Fibre optic communication Where fibre optic communication devices are fitted, these should not be viewed directly. Optical power meters should be used to determine the operation or signal level of the device. Cleaning The equipment may be cleaned using a lint free cloth dampened with clean water, when no connections are energised. Contact fingers of test plugs are normally protected by petroleum jelly which should not be removed.

Pxxxx/EN SS/B11 Safety Section

5.

Page 7/10

DECOMMISSIONING AND DISPOSAL Decommissioning: The supply input (auxiliary) for the equipment may include capacitors across the supply or to earth. To avoid electric shock or energy hazards, after completely isolating the supplies to the equipment (both poles of any dc supply), the capacitors should be safely discharged via the external terminals prior to decommissioning. Disposal: It is recommended that incineration and disposal to water courses is avoided. The equipment should be disposed of in a safe manner. Any equipment containing batteries should have them removed before disposal, taking precautions to avoid short circuits. Particular regulations within the country of operation, may apply to the disposal of batteries.

6.

EQUIPMENT WHICH INCLUDES ELECTROMECHANICAL ELEMENTS Electrical adjustments It is possible to change current or voltage settings on some equipment by direct physical adjustment e.g. adjustment of a plug-bridge setting. The electrical power should be removed before making any change, to avoid the risk of electric shock. Exposure of live parts Removal of the cover may expose hazardous live parts such as relay contacts, these should not be touched before removing the electrical power.

7.

TECHNICAL SPECIFICATIONS FOR SAFETY

7.1

Protective fuse rating The recommended maximum rating of the external protective fuse for equipments is 16A, high rupture capacity (HRC) Red Spot type NIT, or TIA, or equivalent, unless otherwise stated in the technical data section of the equipment documentation. The protective fuse should be located as close to the unit as possible. DANGER

7.2

CTs must NOT be fused since open circuiting them may produce lethal hazardous voltages.

Protective Class IEC 61010-1: 2001 EN 61010-1: 2001

7.3

-

Class I (unless otherwise specified in the equipment documentation). This equipment requires a protective conductor (earth) connection to ensure user safety.

Installation Category IEC 61010-1: 2001 EN 61010-1: 2001

Installation Category III (Overvoltage Category III): Distribution level, fixed installation. Equipment in this category is qualification tested at 5kV peak, 1.2/50µs, 500Ω, 0.5J, between all supply circuits and earth and also between independent circuits

Pxxxx/EN SS/B11 Page 8/10 7.4

Safety Section

Environment The equipment is intended for indoor installation and use only. If it is required for use in an outdoor environment then it must be mounted in a specific cabinet or housing which will enable it to meet the requirements of IEC 60529 with the classification of degree of protection IP54 (dust and splashing water protected). Pollution Degree – Pollution Degree 2 Altitude – operation up to 2000 m IEC 61010-1: 2001 EN 61010-1: 2001

8.

Compliance is demonstrated by reference to safety standards.

CE MARKING Compliance with all Community directives:

Marking

relevant

European

Product safety: Low Voltage Directive - 73/23/EEC amended by 93/68/EEC EN 61010-1: 2001 EN 60950-1: 2001 EN 60255-5: 2001 IEC 60664-1: 2001

Compliance demonstrated by reference to safety standards.

Electromagnetic Compatibility Directive (EMC) 89/336/EEC amended by 93/68/EEC.

Compliance demonstrated via the Technical Construction File route.

The following Product Specific Standard was used to establish conformity: EN 50263 : 2000 Where applicable :

II (2) G

ATEX Potentially Explosive Atmospheres directive 94/9/EC, for equipment.

The equipment is compliant with Article 1(2) of European directive 94/9/EC. It is approved for operation outside an ATEX hazardous area. It is however approved for connection to Increased Safety, “Ex e”, motors with rated ATEX protection, Equipment Category 2, to ensure their safe operation in gas Zones 1 and 2 hazardous areas. CAUTION – Equipment with this marking is not itself suitable for operation within a potentially explosive atmosphere. Compliance demonstrated by Notified Body certificates of compliance.

Radio and Telecommunications Terminal Equipment (R & TTE) directive 95/5/EC.

Compliance demonstrated by compliance to the Low Voltage Directive, 73/23/EEC amended by 93/68/EEC, down to zero volts, by reference to safety standards.

Pxxxx/EN SS/B11 Safety Section

9.

Page 9/10

RECOGNIZED AND LISTED MARKS FOR NORTH AMERICA CSA - Canadian Standards Association UL

- Underwriters Laboratory of America

– UL Recognized to UL (USA) requirements – UL Recognized to UL (USA) and CSA (Canada) requirements – UL Listed to UL (USA) requirements

– UL Listed to UL (USA) and CSA (Canada) requirements

– Certified to CSA (Canada) requirements

Pxxxx/EN SS/B11 Page 10/10

Safety Section

BLANK PAGE

Technical Guide

P220/EN GS/B43

MiCOM P220

Getting Started

Technical Guide Getting Started MiCOM P220

P220/EN GS/B43 Page 1/22

CONTENTS 1.

RECEPTION OF THE PRODUCT

3

1.1

Reception of the relay

3

1.2

Electrostatic discharge (ESD)

3

2.

HANDLING ELECTRONIC EQUIPMENT

3

3.

INSTALLING THE RELAYS

4

4.

UNPACKING

4

5.

STORAGE

4

6.

INTRODUCTION TO MiCOM P220

5

6.1

MiCOM series relay

5

6.2

MiCOM P220 Functions

6

6.3

Front view

7

6.4

Relay rear description

9

7.

PRODUCT IDENTIFICATION

10

8.

STARTING THE MiCOM P220 IN 5 MINUTES

11

8.1

Check the wiring of your installation

11

8.2

Connecting the MiCOM P220 relay to the auxiliary voltage

11

8.3

MINIMUM CONFIGURATION TO START UP THE MiCOM P220

12

8.3.1 8.3.2 8.3.3 8.3.4 8.4

OP PARAMETERS Menu CONFIGURATION Menu COMMUNICATION Menu PROTECTION G 1 Menu COMPLETE CONFIGURATION OF THE MiCOM P220

12 14 19 19 21

9.

COMPANY CONTACT INFORMATION

22

P220/EN GS/B43

Technical Guide Getting Started MiCOM P220

Page 2/22

BLANK PAGE

Technical Guide Getting Started MiCOM P220

1.

RECEPTION OF THE PRODUCT

1.1

Reception of the relay

P220/EN GS/B43 Page 3/22

Protection relays are generally robust. However it is appropriate to treat them with care before installing them on site. As soon as they arrive, the relays should be examined immediately, looking for any deterioration which could have occurred during transport. If there is any deterioration, make a claim against the forwarding company and inform AREVA T&D as soon as possible. Relays not intended for immediate installation must be stored in their protective polyethylene packaging. 1.2

Electrostatic discharge (ESD) Relays use components sensitive to electrostatic discharges. The electronic circuits are well protected by the metal housing. Consequently, the internal module must not be taken out pointlessly. When handling the module outside its housing, be very careful to avoid any contact with electrical connections and components. If it is removed from its housing for storage, the module must be placed in electrically conductive antistatic packaging. No configuration setting is possible in the module. We therefore advise you not to dismantle it pointlessly. The printed circuit boards are interconnected. They are not designed for disconnection by the user. Avoid touching the printed circuit boards. They are made with complementary metal-oxide semiconductors (CMOS) and the static electricity discharged by the human body has an adverse effect on them.

2.

HANDLING ELECTRONIC EQUIPMENT The usual movements of a person easily generate electrostatic energy which may reach several thousand volts. The discharging of this voltage into devices comprising semiconductors, when handling electronic circuits, can cause severe deterioration. Such damage is not necessarily visible immediately. Nevertheless, it reduces the reliability of the circuit. Electronic circuits are completely protected against any electrostatic discharge when inside their housing. Do not expose them to any risk by needlessly taking the modules out of their housings. Each module has the best possible protection for its devices consisting of semiconductors. However, should it be necessary to withdraw the module from its housing, please take the following precautions to preserve the great reliability and long service life for which the equipment was designed and manufactured. 1.

Before taking the module out of its housing, touch the housing to balance your electrostatic potential.

2.

When handling the module, hold it by its front plate, or by its frame or by the edges of the printed circuit board. Do not touch the electronic components, the printed circuit conductors and the connectors.

3.

Before passing the module to another person, shake hands with him or her for example to balance your electrostatic potential

4.

Place the module on an antistatic surface or an electrically conductive surface with the same potential as yourself.

5.

To store or transport the module, place it in conductive packaging.

P220/EN GS/B43 Page 4/22

Technical Guide Getting Started MiCOM P220

If you carry out any measurements on the internal electronic circuits of a device in service, earth yourself to exposed conductive parts by linking yourself to the housing by a conductive strap attached to your wrist. The resistance to earth of the conductive strap which you attach to your wrist and to the housing must be between 500 kΩ and 10 MΩ. If you do not have a device of this type, you must remain permanently in contact with the housing to prevent any static energy accumulating. The instruments used to take the measurements must be earthed to the housing insofar as this is possible. For further information on the procedures for safe working with all the electronic equipment, please consult standards BS5783 and IEC 147-OF. In a special handling area we strongly advise you to undertake a detailed analysis of the electronic circuits and working conditions according to the BS and IEC standards mentioned above.

3.

INSTALLING THE RELAYS The relays are supplied either individually or mounted in a cubicle. If separate relays have to be installed according to a particular drawing, please follow the mounting details indicated in publication R7012. If a MMLG test unit has to be incorporated, position it to the right of the set of relays (looking at them from the front). The modules must still be protected in their metal housings during installation on a cubicle. The design of the relays makes it possible to reach the mounting holes easily without taking off the cover. For individually mounted relays, a positioning diagram is normally supplied to indicate the centre of the holes and the layout of the cubicle. The corresponding dimensions are also indicated in the corresponding sales publication (N 1550-B).

4.

UNPACKING When unpacking and installing relays, take great care to avoid damaging the parts and changing the settings. Relays must be handled only by people who are experts in this field. As far as possible, the installation must remain clean, dry, free from dust and free from excessive vibration. The site must be well lit to facilitate inspection. Relays removed from their housings must not be exposed to dust or humidity. To this end, it is necessary to take great care when installing relays whilst construction work is taking place on the same site.

5.

STORAGE If the relays do not have to be installed immediately on reception, they must be stored protected against dust and humidity in their original carton. If dehumidifying crystals are placed in the relay packaging, it is advisable not to remove them. The effect of the dehumidifying crystals is reduced if the packaging is exposed to ambient conditions. To restore their original effectiveness, you need only to heat the crystals slightly for around an hour, before replacing them in their delivery carton. As soon as the packaging is opened, the dust which has accumulated on the carton risks settling on the relays. In the presence of moisture, the carton and the packaging can become humidified to the point where the effectiveness of the dehumidifying crystals is reduced. The temperature for storage should remain between - 25 °C and + 70 °C.

Technical Guide Getting Started MiCOM P220

6.

INTRODUCTION TO MiCOM P220

6.1

MiCOM series relay

P220/EN GS/B43 Page 5/22

The range of MiCOM protection relays follows on from the success of the MIDOS, K and MODN ranges by incorporating the last changes in digital technology. The MiCOM P220 is fully compatible and use the same modular box concept. MiCOM P220 provides more protection elements for the most demanding applications. This relay has a large number of control functions and collecting data. This can form part of a fully integrated system covering protection, control, measurements data acquisition and recording of faults, events, and disturbances. The relay is equipped on the front panel with a liquid crystal display (LCD) with 2x16 back-lit alphanumerical characters, a tactile 7 push keypad (to gain access to all the parameters, alarms and measurements) and 8 LEDs simply displaying the state of the relay. In addition, the use of the RS485 communication port makes it possible to read, reinitialise and change the settings of the relay, if required, from a local or remote PC computer equipped with appropriate software. Its flexibility of use, reduced maintenance requirements and ease of integration allow the MiCOM P220 to provide an evolving solution for the problems of the protection of motors.

P220/EN GS/B43

Technical Guide Getting Started MiCOM P220

Page 6/22 6.2

MiCOM P220 Functions Function

MiCOM P220

[49] THERMAL OVERLOAD

X

[50/51] SHORT-CIRCUIT

X

[50N/51N] EARTH FAULT

X

[46] UNBALANCE

X

[48] EXCESS LONG START

X

[51LR-50S] BLOCKED ROTOR

X

[37] LOSS OF LOAD

X

[49/38] RTD (optional)

X

[49] THERMISTANCE (optional)

X

[66] START NUMBER

X

MIN TIME BETWEEN 2 STARTS

X

EMERGENCY START

X

RE-ACCELERATION. AUTORISATION

X

SETTING GROUPS

2

MEASUREMENTS (True RMS + direct Current, indirect + MAX Value )

X

PROCESS MENU

X

Circuit Breaker SUPERVISION

X

Circuit Breaker MONITORING

X

TRIP STATISTICS

X

LATCHING RELAYS

X

AND LOGIC EQUATIONS

X

FAULTS RECORDS

X

EVENTS RECORDS

X

DISTURBANCE RECORDS

X

COMMUNICATION PORT FRONT PANEL (RS232)

X

COMMUNICATION PORT REAR FACE (RS485)

X

Technical Guide Getting Started MiCOM P220 6.3

P220/EN GS/B43 Page 7/22

Front view The front panel is described in figure 1. Extra physical protection for the front panel can be provided by an optional transparent front cover. This allows read access only to the relay settings and data but does not affect the relay IP rating. When full access to the relay keypad is required, for editing the settings, the transparent cover can be unclipped and removed when the top and bottom covers are open.

P0176ENb

FIGURE 1 - RELAY FRONT VIEW

The front panel of the relay includes the following, as indicated in the figure1: −

a 16 character by 2-line alphanumeric liquid crystal display (LCD)

−

a 7-Keypad comprising 4 arrow keys (!, ", #, $,.an ENTER key %, a CLEAR key &, and a READ key ').

−

8 LEDs ; 4 fixed function LEDs and 4 programmable function LEDs on the left hand side of the front panel.

−

Under the top hinged cover: •

−

The relay serial number, and the relay voltage rating information (see figure 3 in this chapter)

Under the bottom hinged cover: •

battery compartment to hold the ½ AA size battery which is used for memory back-up for event, fault and disturbance records.

•

A 9 pin female D-type front port for communication with a PC locally to the relay (up to 15m distance) via a RS232 serial data connection (SK1 port).

P220/EN GS/B43

Technical Guide Getting Started MiCOM P220

Page 8/22

The fixed function LEDs on the left hand side of the front panel are used to indicate the following conditions: LEDs

Colour

Labels

Significance

LED 1

RED

TRIP

LED 1 indicates when a trip order has been issued by the relay to the cut-off element (circuit breaker, contactor). This LED recopies the trip order issued to the trip output contact (RL1). Its normal state is unlit. It will light as soon as a trip order is issued. It goes out when the associated alarm is acknowledged (by pushing the & key).

LED 2

Yellow

Alarm

Upon detection of a fault (thermal O/V) or an alarm (CB state) by MiCOM P220 relay, the LED will start flashing. After reading of the alarm(s) message(s) by pressing the ' key, the LED will change from flashing to constant illumination, and will extinguish when all the alarms are cleared (Key &). The alarms are either threshold crossings (instantaneous), or tripping orders (time delayed).

LED 3

Orange

Warning

LED 3 is dedicated to the internal alarms of MiCOM P220 relays. When a “non critical” internal alarm (typically communication Fault) is detected, the LED flashes continuously. When the fault is classified as “critical”, the LED is illuminated continuously. The extinction of this LED is only possible by the disappearance of the cause that caused its function (repair of the module, disappearance of the fault).

LED 4

Green

Healthy

LED 4 indicates that MiCOM P220 relays are working correctly.

LED 5 to LED 8

Red

Aux1 to Aux4

These LEDs can be programmed by the user on the basis of information on available thresholds (instantaneous and time-delayed). The user selects the information he wishes to see associated with a LED. Each LED illuminates when the associated information is valid. The extinction of each LED is linked to the acknowledgement of the associated alarms.

Technical Guide Getting Started MiCOM P220 6.4

P220/EN GS/B43 Page 9/22

Relay rear description Connector 1

Connector 2

OPTION: This connector (Orange) is designed for the use of - 6 RTD or 2 Thermistances. - Analogical Output.

P0177ENa

FIGURE 2 - MiCOM P220 RELAY REAR VIEW

Connector 1

Connector 2

Common TC4

1

Common TC1

2

Case Earth

29 RS485 (Resistance)

30

TC4 (NC)

3

TC1 (NC)

4

RS485 (+)

31 RS485 (-)

32

TC4 (NO)

5

TC1 (NO)

6

Auxiliary Supply (+)

33 Auxiliary Supply (-)

34

Common TC5

7

Common TC2

8

WD (NO)

35 Common WD

36

TC5 (NC)

9

TC2 (NC)

10

WD (NC)

37

38

TC5 (NO)

11 TC2 (NO)

12

39

40

Input L3 (+)

13 Common TC3

14

IA (Input Ph.A /5 amps)

41 Common IA 42 (Ph.A/ 5 amps)

Input L3 ( - )

15 TC3 (NC)

16

IB (Input Ph.B /5 amps)

43 Common IB (Ph.B/ 5 amps)

Input L4 (+)

17 TC3 (NO)

18

IC (Input Ph.C /5 amps)

45 Common IC 46 (Ph.C/ 5 amps)

Input L4 ( - )

19

20

I0 (E/F input) (5 amps)

47 Common E/F (5 amps)

48

Input L5 (+)

21 Input L1 (+)

22

IA (Input Ph.A /1 amp)

49 Common IA (Ph.A/ 1 amp)

50

Input L5 ( - )

23 Input L1 ( - )

24

IB (Input Ph.B /1 amp)

51 Common IB (Ph.B/ 1 amp)

52

25 Input L2 (+)

26

IC (Input Ph.C /1 amp)

53 Common IC (Ph.C/ 1 amp)

54

27 Input L2 ( - )

28

I0 (E/F input) (1 amp)

55 Common E/F (1 amp)

56

NOTE:

The terminals of MiCOM P220 are represented with power supply off.

44

P220/EN GS/B43

Technical Guide Getting Started MiCOM P220

Page 10/22

7.

PRODUCT IDENTIFICATION Prior to applying power, unclip the top cover and check that the model number of the relay listed on the front panel (top left) corresponds to the model ordered.

CE

P220 C00M11100 No. 2501511

Cde 37982/007

0,002 - 1 Ion

Modbus

Vx 130 - 250Vcc / 100 - 250Vca P0178ENa

FIGURE 3 - TECHNICAL INFORMATION

The significance of each information is described below: −

P220 C00M11100 : cortec code. In particular, this code allows the user to know what is the protocol used for remote communications (code 1 means MODBUS).

−

No 2501511 and Cde 37982/007: these numbers are the serial number and the reference number of the order: they are necessary in case of problems.

−

0.002 – 1 Ion : This is referred to the sensibility of the E/F current input.

−

Modbus: Communication protocol available through the rear RS485 communication port.

−

Vx 130 – 250Vdc / 100 – 250Vac : Power supply range . In this example, the power supply can be either ac or dc voltage.

Technical Guide Getting Started MiCOM P220

8.

P220/EN GS/B43 Page 11/22

STARTING THE MiCOM P220 IN 5 MINUTES The object of this chapter is to enable you to make the MiCOM P220 operational in 5 minutes before starting the motor.

8.1

8.2

Check the wiring of your installation •

First check that you have thoroughly taken note of Handling and Safety, chapter T00.

•

Check that the wiring of your installation is in compliance with the connection diagram shown in chapter.2

•

Check that the output relay No. 1 (terminals 2-4-6) is correctly inserted into the trip circuit of the breaking device.

•

Verify that the logic input No. 1 (terminals 22-24) is correctly connected to an o/o interlock copying the position of the breaking device.

Connecting the MiCOM P220 relay to the auxiliary voltage Before energising the MiCOM P220 relay, check that the electrical characteristics of the MiCOM P220* protection correspond to those of the auxiliary voltage of the installation. −

Switch on the auxiliary source.

−

Push the live part of the MiCOM P220 relay into its housing. Once the relay is plugged in and the auxiliary source is energised, the green LED marked "Healthy" (or "Uaux" in French) should light up. This is the 4th LED down from the top.

ATTENTION :

THE EXTRACTION OF THE ACTIVE PART OUT OF THE CASE COULD BE DONE BY OPENING THE TWO FLAPS (THE UPPER AND THE LOWER), THEN WITH A SCREWDRIVER OF 3MM,BY MAKING A SWIVEL OF THE EXTRACTOR LOCATED UNDER THE UPPER FLAP AND FINALLY BY EXERTING A TRACTION ON THE TWO NOTCHES SITUED BEHIND THESE SHUTTERS. (IT IS NECESSARY - AFTER PIVOTING THE EXTRACTOR - TO WAIT 2 OR 3 SECONDS BEFORE MAKING COME OUT THE ACTIVE PART, TO LEAVE DISCHARGING THE CAPACITORS IN THE ACTIVE PART THUS AVOIDING POSSIBLE ELECTRIC ARCS IN THE EVENT OF DIRECT CONTACT OF THE CONNECTOR BLOCKS WITH METAL LIMP).

P220/EN GS/B43

Technical Guide Getting Started MiCOM P220

Page 12/22 8.3

MINIMUM CONFIGURATION TO START UP THE MiCOM P220

8.3.1

OP PARAMETERS Menu

8.3.1.1 Activation of the parameter mode From the default display of the menu which appears when connecting the MiCOM P220 relay to the auxiliary voltage, double click on the " button, the PASSWORD cell appears. OP PARAMETERS

PASSWORD = **** Click on the % button, and the flashing cursor appears. The following cell appears: PASSWORD =

AAAA

There are two possibilities: •

The relay leaves the factory with the default password AAAA. Press the % button again. The following message appears for 2 seconds to indicate that the password has been entered correctly. The MiCOM relay thus goes into parameterisation mode.

PASSWORD OK •

If a password other than the AAAA has already been loaded since MiCOM P220 relay left the factory, enter this new password by using the buttons %, $,! and ". After the validation of the new password using the % button, the cell below appears for 2 seconds. The MiCOM P220 relay goes thus into the parameterisation mode.

PASSWORD OK NOTE :

PASSWORD =

The parameterisation mode is deactivated if no button has been pressed for 5 minutes. If the relay was already in parameterisation mode when the password was entered; the cell… AAAA …will be replaced by

NEW PASSWORD OK

Technical Guide Getting Started MiCOM P220

P220/EN GS/B43 Page 13/22

8.3.1.2 Indication of the motor frequency Once the password is confirmed, press the " button 4 times. The following cell appears: FREQUENCY =

50 Hz

Then there are two possibilities: •

If the motor has a rated frequency of 50Hz, do nothing.

•

If the motor has a rated frequency of 60Hz, then press the % button.

A flashing cursor appears under the 0 of the term 50 Hz. FREQUENCY = 50 Hz Press the ! button, and the cell below appears: FREQUENCY = 60 Hz Confirm this by pressing the % button.

P220/EN GS/B43 Page 14/22 8.3.2

Technical Guide Getting Started MiCOM P220

CONFIGURATION Menu After having entered the motor frequency, press the ! button 5 times. The following menu heading appears: OP PARAMETERS Press the $ button, and the heading of the CONFIGURATION menu appears: CONFIGURATION

8.3.2.1 CONFIG SELECT Submenu Press the " button once. The heading of the CONFIG. SELECT submenu appears: CONFIG SELECT Selection of the type of analog output This can be set only if the MiCOM P220 relay is equipped with the "analog output" option. Starting with the heading of the CONFIG. SELECT submenu, press the " button 5 times, and the following cell appears : ANALOG. OUTPUT 0 - 20 mA Two possibilities arise: •

If you need an analog output signal on a 0-20 mA current loop, do nothing

•

If you need an analog output signal on a 4-20 mA current loop, press % button and then the ! button.

The following cell appears: ANALOG. OUTPUT 4 - 20 mA Confirm by pressing the % button. Selection of the information available on the analog output This can be parameterised only if the MiCOM P220 relay is equipped with the "analog output" option.

Technical Guide Getting Started MiCOM P220

P220/EN GS/B43 Page 15/22

Starting from the preceding cell, press the " button, and the following cell appears: TYPE OF ANA. INFO IA RMS Using the % and ! buttons, select the type of information you wish to bring onto the analog output, then confirm by pressing the % key. Selection of the type of RTD This can be set only if the MiCOM P220 relay is equipped with the "monitoring of 6 RTDs" option or “monitoring of 2 thermistors + 4 RTD” option. Starting from the preceding cell, press the " button, otherwise starting from the heading of the CONFIG. SELECT submenu, press the " button 7 times. The following cell appears: Type RTD = PT100 Using the % and ! buttons, select the type of RTD with which the motor is equipped, then confirm by pressing the % key. Selection of the type of thermistors This can be set only if the MiCOM P220 relay is equipped with the "monitoring of 2 thermistors and 4 RTD" option. Two possibilities arise: •

The MiCOM P220 relay is not equipped with the "analog output" option; starting from the CONFIG. SELECT submenu, press the " button 5 times. The following cell appears:

Type Thermist 1 =

PTC

The MiCOM P220 relay is equipped with the "analog output" option; starting from the following cell: TYPE OF ANA. INFO IA RMS (The type of information to be brought onto the analog output can be different from IA RMS).

P220/EN GS/B43

Technical Guide Getting Started MiCOM P220

Page 16/22 Press the " button once. The following cell appears: Type Thermist 1 = PTC

If the No.1 group of thermistors equipping the motor is of the PTC (positive temperature coefficient) type, do nothing. On the other hand, if the motor is equipped with a group of thermistors of type NTC (negative temperature coefficient), press the % button then the ! button. The following cell appears: Type Thermist 1 =

NTC

Confirm by pressing the % button. Press the " button , then the following cell appears : Type Thermist 2 = PTC Repeat the same operation if the No. 2 thermistor group of the motor is of type NTC. 8.3.2.2 CT RATIO Submenu: adjustment of the primary and secondary ratings of the current sensors From inside the CONFIG. SELECT submenu, press the " button as many times as necessary to reach the heading of the CONFIG. SELECT submenu. As indicated below: Press the $ button once. The heading of the CT RATIO submenu appears: CT RATIO Value of the primary rating of the phase CTs Press once on the " button. The following cell appears: PRIM PH =

1000

In this cell, indicate the value of the primary rating of the phase CTs. For example, for a CT with a ratio of 200/5, set the value 200 as explained below.

Technical Guide Getting Started MiCOM P220

P220/EN GS/B43 Page 17/22

Press the % button. A flashing cursor appears under the last 0 of 1000: PRIM PH = 1000 Using the ! and " buttons, increase and/or decrease the 1st digit. Then press the # button. The cursor moves under the 2nd digit. Using the ! and " buttons, increase and/or decrease the 2nd digit. Then do the same for the 3rd and 4th digits. Confirm by pressing the % button. Value of the secondary rating of the phase CTs Press the " button once. The following cell appears: SEC PH = 1 If the current circuits coming from the secondaries of the phase CTs are connected to the phase current inputs with a rating of 1 A (terminals 49-50; 51-52; 53-54) of the MiCOM P220, do nothing. This implies that the secondaries of the phase CTs have the rating of 1 A. On the other hand, if the current circuits are connected to the phase current inputs with a rating of 5 A (terminals 41-42; 43-44; 45-46) of the MiCOM P220, this implies that the rating of the secondaries of the phase CTs is 5 A, press the % button. A cursor appears under the 1: SEC PH = 1 Press the ! button. Confirm by pressing the % button. The following cell appears: SEC PH = 5 Value of the primary of the earth sensor. Press once on the " button. The following cell appears: PRIM E = 1000 Press the % button. A cursor appears under the last 0 of 1000: PRIM E = 1000

P220/EN GS/B43

Technical Guide Getting Started MiCOM P220

Page 18/22 Two possibilities arise: •

The earth current input is connected to a core balanced CT. In this cell, set the value of the ratio of the core balanced CT using the buttons !, " and #. Confirm by pressing % .

•

The earth current input is connected to the residual connection of the three secondary circuits coming from the phase CTs. In this cell, set the value of the primary rating of the phase CTs using the buttons #, !, and ". Confirm by pressing % .

Value of the secondary of the earth sensor Press the " button once. The following cell appears: SEC E =

1

Two possibilities arise: •

The earth input is connected to a core balanced CT. Do nothing, leave this value at 1.

•

The earth input is connected to the residual connection of the three secondary circuits coming from the phase CTs. In this cell, set the value of the secondary rating of the phase CTs (this implies that the residual connection circuit is cabled to the earth current input corresponding to the secondary rating of the phase CTs).

If the rating is 1A, do nothing. On the other hand, if the rating is 5 A, press the % button, and a flashing cursor appears. SEC E = 1 Press the ! button. Confirm by pressing the % button. The following cell appears: SEC E = 5

Technical Guide Getting Started MiCOM P220 8.3.3

P220/EN GS/B43 Page 19/22

COMMUNICATION Menu Starting from the preceding cell, press the " button once. The heading of the CT RATIO submenu appears. Press the ! button once. The heading of the CONFIGURATION menu appears. Then press the $ button 4 times. The heading of the COMMUNICATION menu appears. COMMUNICATION Press the " button once. The following cell appears: COM. OK =

YES

You wish to use the MiCOM P220 relay for communication, so check that the word YES appears. If it does not appear, press % once and then ! once. YES appears, so confirm with % . If the relay MiCOM P220 is used for communication (via the RS485 port at the rear), set the various parameters of the COMMUNICATION menu using the buttons: −

" to move from one line to another and also to reduce the value of a parameter;

−

% to select a parameter to be modified and also to confirm the entry of a parameter,

−

! to increase the value of a parameter.

Then press the " or ! button as many times as necessary, to return to the heading of the COMMUNICATION menu. 8.3.4

PROTECTION G 1 Menu Press the $ button once. The heading of the PROTECTION group 1 menu appears. PROTECTION G1

8.3.4.1 Setting the threshold of thermal current Iθ> Press the " button once. appears :

The heading of the THERMAL OVERLOAD submenu

[49] THERMAL OVER-LOAD Press the " button once, the following cell appears. THERMAL OVERLOAD FUNCT ? YES Check that the word YES actually appears. If not, press once on %, then once on ! the word YES appears, confirm with %. Press the " button twice. The following cell appears :

P220/EN GS/B43

Technical Guide Getting Started MiCOM P220

Page 20/22 Iθ > =

0.2 In

Press the % button. A flashing cursor appears: Iθ > = 0.2 In Using the !, " and # buttons, set the value of the thermal current threshold Iθ> corresponding to the machine. Confirm by pressing the % button. From this point, a minimum configuration has been given for starting up the MiCOM P220 relay. This minimum configuration makes it possible to start up the MiCOM P220 relay. It is not in any way sufficient to ensure that the motor is protected. For this, it is appropriate to configure the MiCOM P220 relay completely.

Technical Guide Getting Started MiCOM P220 8.4

P220/EN GS/B43 Page 21/22

COMPLETE CONFIGURATION OF THE MiCOM P220 The MiCOM P220 relay can be completely configured: −

Either by using the interface on the front (buttons !, ", $, # and % and the display unit);

−

or by using the control and setting software MiCOM S1.

You can set the protections and automatic controls of the MiCOM P220 you wish to use in the following submenus: − [49] THERMAL OVERLOAD. − [50/51] SHORT-CIRCUIT. − [50N/51N] EARTH FAULT. − [46] UNBALANCE. − [48] EXCES LONG START − [51LR-50S] BLOCKED ROTOR. − [37] LOSS OF LOAD. − [49/38] RTD (optional). − [49] THERMISTOR + RTD (optional). − [66] START NUMBER. − MIN TIME BETWEEN 2 STARTS. − RE-ACCELER AUTORISATION. You can also set : − the binary inputs, INPUTS submenu; − the AND logic equations, AND LOGIC EQUATION submenu; − the time delays associated with AND logic equations, AND LOGIC EQUAT T DELAY submenu; − the auxiliary output relays, AUX OUTPUT RLY submenu; − the holding of the auxiliary output contact, LATCH OUTPUT Submenu; − the tripping output relay, TRIP OUTPUT RLY submenu; − the holding of the tripping command, LATCH TRIP ORDER submenu. Other parameters can be configured: − monitoring of the breaking device, CIRDCUIT BREAKER SUPERVISION submenu; − characteristics of the disturbance recording, DISTURB RECORD submenu; − motor feeder reference name, OP PARAMETERS submenu; − motor start detection criterion, CONFIG. SELECT submenu; − allocation of illuminated indicator LED 5, LED 5 submenu; − allocation of illuminated indicator LED 6, LED 6 submenu; − allocation of illuminated indicator LED 7, LED 7 submenu; − allocation of illuminated indicator LED 8, LED 8 submenu. For further information, refer to chapter 4 and 5 of the MiCOM P220 User Guide. Do not forget to configure the trip output relay (Relay No. 1, terminals 2-4-6) in the TRIP OUTPUT RLY. Submenu.

P220/EN GS/B43

Technical Guide Getting Started MiCOM P220

Page 22/22

9.

COMPANY CONTACT INFORMATION If you need information regarding the operation of the MiCOM product that you have, please contact your local AREVA agent or the After Sales Service Department of AREVA T&D. and mention the reference of your MiCOM product. The MiCOM product references are mentioned under the upper flap of the product front plate. PLEASE MENTION THE FOLLOWING DATA WHEN YOU CALL US : −

CORTEC code of the MiCOM relay

−

Serial number of the MiCOM relay

−

AREVA’s order reference

−

AREVA’s operator reference

AFTER SALES SERVICE DEPARTMENT ADDRESS AND PHONE/FAX NUMBER: Service Après Vente/After Sales Service AREVA T&D 95 avenue de la Banquière – BP75 34975 Lattes Cedex FRANCE Phone : 33 (0)4.67.20.55.58 ou 33 (0)4.67.20.55.55 Fax : 33 (0)4.67.20.56.00 E-mail :franç[email protected]

Technical Guide

P220/EN CO/B43

MiCOM P220

Connection Diagram

Technical Guide Connection Diagram MiCOM P220

P220/EN CO/B43 Page 1/14

CONTENTS 1.

CONNECTION DIAGRAM

3

1.1

MiCOM P220 typical connection

3

1.2

Typical application diagram

4

1.3

MiCOM P220 typical connection (with 6 RTD and analogue output options)

5

1.4

MiCOM P220 typical connection (with 2 thermistors and 4 RTD option and analogue output options)

6

2.

CONNECTION

7

2.1

Earth connection

7

2.2

Auxiliary power

7

2.3

Current inputs

7

2.4

Binary inputs

7

2.5

Output relays

7

2.6

Front port connection (RS232)

8

2.7

RS485 rear port

9

2.7.1 2.7.2 2.7.3 2.7.4 2.7.5 2.8

Description Connection RS485 cable Protocol convertor: RS232 -> K-Bus RS232 / RS485 converter Analogue output

9 9 10 10 10 11

2.9

RTDs

11

2.10

Thermistors

12

2.10.1 PTC type thermistors 2.10.2 NTC type thermistors

13 13

P220/EN CO/B43

Technical Guide Connection Diagram MiCOM P220

Page 2/14

BLANK PAGE

C

5A

5A

5A

5A

1A

1A

1A

1A

49

S2

P2

S1 1

S2

S1

P1

5A

5A

5A

5A

1A

1A

1A

1A

49

a 22c 22a a 24c 24a 26a a a 28c 28a a 30c 30a a 32c 32a 24 26 28

23 25 27

S1

S1

Pins terminals (pcb type)

RS 485 communication port

Case earth connection

Programmable input L5

Programmable input L4

30

23 -

19 + 21

15 + 17

28 + 13

24 + 26

*

(6) Important : the analogue output option shall be used either in active source mode or in passive source mode

(5) The shielding is bonded to the earth point located next to the connector.

(4) The MICOM P220 relay is shown with power supply off

5A

5A

Speed switch signal input L2 Programmable input L3

+ 22

MiCOM P220

*

(6) If analogue output option :

If thermistor option :

If 6 RTD option :

RL5

5A

5A

RL4

RL3

RL2

RL1

WD

The earth current input is connected to a core balanced CT.

1A

1A

1A

1A

Auxiliary voltage

Switchgear status 52a input L1

P1

CT shorting links make before (b) and (c) disconnect

(3) Earth connection are typical only

(d)

(c)

(b)

(a)

8

7 12

6

5

11

4

3

Module terminal bl viewed from rear (with integral case earth link)

Orange connector

Nota :

Earth connection (5)

(1)

2a 4a 6a 8a 10a a

a 14c 14a a 16c 16a a 18c 18a

2c 4c 6c 8c 10c

2

1

S2

Case earth

C

B

P2 37

32a

30a

RTD6

RTD5

Analogue output active source mode

common

common

RTD4

RTD3

RTD2

RTD1

Programmable output relay

Programmable output relay

Programmable output relay

Programmable output relay

Programmable tripping output relay

Watch dog (4)

common

2-24 Volt

Analogue g output passive source mode

32c -

30c

4a

2a

2c

16a

14a

18c

16c

12a

10a

8a

12c

10c

8c

4a

2a

6c

4c

9

11

1

3

5

14

18

8

10

12

2

4

36

35

MiCOM P220 typical connection

B

S1

A

1.1

Alternative : Connection to 2 phase CTs + a core blanced CT.

S2

P1

CONNECTION DIAGRAM

A

C

B

P2

Orange connector

A

1.

Orange connector

Alternative :The earth current input is connected to the sommation of the three phase CTs.

Technical Guide Connection Diagram MiCOM P220 P220/EN CO/B43 Page 3/14

P0186ENb

On

Fuse blown

External reset

Emergency g y startup p

• the auxiliary power could be Ac or DC according to the model number of the relay

48

56 44

52 45

53

+ Programmable - Input L5

+ Programmable - Input L4

Programmable output RL5 relay

Programmable output RL3 relay

Watchdog

Programmable output RL4 relay

+ -

+ -

7

9

11

14

18

36

35

37

32 a/c

26

Communication + RS485 - 32

Speed switch signal input L2 Programmable output RL2 relay Analogue output (orange connector)

+ Programmable - Input L3

+

46 5A A

54 1A A

2 thermistors and 4 RTD + (orange connector) -

43

51

MiCOM P220

42

50

CT phase C

The MiCOM P220 is shown with power supply off.

23

21

19

17

15

13

1

3

5

8

10

12

2

4

6

41

49

Programmable tripping output relay

+ Contactor status 52a - Input L1

22 24

-

power

55

34

33

Emergency stop

Vaux

Signalling lamp

Klaxon

Off

Contactor coil

52a

CT phase B

Stator temperature

Signalling

Signalling

Signalling

PLC

PC/PLC supervisor

Ambient temperature

Bearings temperature

Motor 14

Vaux

Page 4/14

ATTENTION : • the logic input shall be supplied by a DC auxiliary voltage only

(see see note below))

Auxiliary voltage Vaux

C

B

A

Core balanced CT CT phase A

1.2

Fuse

P220/EN CO/B43 Technical Guide Connection Diagram MiCOM P220

Typical application diagram

P0187ENa

C

B

A

C

B

A

S2

S1

P1

5A

5A

5A

5A

1A

1A

1A

1A

49

S2

P2

S1 1

S2

S1

P1

5A

5A

5A

5A

1A

1A

1A

1A

49

Alternative : Connection to 2 phase CTs + a core blanced CT.

P2

a 22c 22a a 24c 24a 26a a a 28c 28a a 30c 30a a 32c 32a 24 26 28

23 25 27

S1

S1

Pins terminals (pcb type)

RS 485 communication port

Case earth connection

Programmable input L5

Programmable input L4

30

23 -

19 + 21

15 + 17

28 + 13

24 + 26

*

(6) Important : the analogue output option shall be used either in active source mode or in passive source mode

(5) The shielding is bonded to the earth point located next to the connector.

(4) The MICOM P220 relay is shown with power supply off

5A

5A

Speed switch signal input L2 Programmable input L3

+ 22

MiCOM P220

*

(6) If analogue output option :

If 6 RTD option :

RL5

5A

5A

RL4

RL3

RL2

RL1

WD

The earth current input is connected to a core balanced CT.

1A

1A

1A

1A

Auxiliary voltage

Switchgear status 52a input L1

P1

CT shorting links make before (b) and (c) disconnect

(3) Earth connection are typical only

(d)

(c)

(b)

(a)

8

7 12

6

5

11

4

3

S2

P2

Case earth

Module terminal bl viewed from rear (with integral case earth link)

Orange connector

Nota :

Earth connection (5) (1)

2a 4a 6a 8a 10a a

a 14c 14a a 16c 16a a 18c 18a

2c 4c 6c 8c 10c

2

1

C

B

A

37

32a

30a

RTD6

RTD5

Analogue output active source mode

common

common

RTD4

RTD3

RTD2

RTD1

Programmable output relay

Programmable output relay

Programmable output relay

Programmable output relay

Programmable tripping output relay

Watch dog (4)

common

2-24 Volt

Analogue g output passive source mode

32c -

30c

18a

16a

14a

18c

16c

12a

10a

8a

12c

10c

8c

4a

2a

6c

4c

9

11

1

3

5

14

18

8

10

12

2

4

36

35

Orange connector

1.3 Orange connector

Alternative :The earth current input is connected to the sommation of the three phase CTs.

Technical Guide Connection Diagram MiCOM P220 P220/EN CO/B43 Page 5/14

MiCOM P220 typical connection (with 6 RTD and analogue output options)

P0188ENb

C

B

A

C

B

A

S2

S1

P1

5A

5A

5A

5A

1A

1A

1A

1A

49

S2

P2

S1 1

S2

S1

P1

5A

5A

5A

a 22c 22a a 24c 24a 26a a a 28c 28a a 30c 30a a 32c 32a 24 26 28

23 25 27

S1

S1

Pins terminals (pcb type)

RS 485 communication port

Case earth connection

Programmable input L5

Programmable input L4

30

23 -

19 + 21

15 + 17

28 + 13

24 + 26

*

(6) Important : the analogue output option shall be used either in active source mode or in passive source mode

(5) The shielding is bonded to the earth point located next to the connector.

(4) The MICOM P220 relay is shown with power supply off

5A

5A

Speed switch signal input L2 Programmable input L3

+ 22

MiCOM P220

*

(6) If analogue output option :

If 2 thermistors and 4 RTD option :

RL5

5A

5A

RL4

RL3

RL2

RL1

WD

The earth current input is connected to a core balanced CT.

1A

1A

1A

1A

Auxiliary voltage

Switchgear status 52a input L1

P1

CT shorting links make before (b) and (c) disconnect

(3) Earth connection are typical only

(d)

(c)

(b)

(a)

8

7 12

6

5

11

4

3

Module terminal bl viewed from rear (with integral case earth link)

Orange connector

Nota :

Earth connection (5)

(1)

2a 4a 6a 8a 10a a

a 14c 14a a 16c 16a a 18c 18a

2c 4c 6c 8c 10c

2

1

S2

Case earth

C

B

A

P2 37

32a

30a

32c

RTD4

Analogue output active source mode

common

RTD3

RTD2

RTD1

Programmable output relay

Programmable output relay

Programmable output relay

Programmable output relay

Programmable tripping output relay

Watch dog (4)

common

2-24 Volt

Analogue g output passive source mode

30c +

18a

16a

14a

18c

16c

12a

10a

8a

12c

10c

8c

4a

2a

6c

4c

9

11

1

3

5

14

18

8

10

12

2

4

36

35

Page 6/14

5A

1A

1A

1A

1A

49

Alternative : Connection to 2 phase CTs + a core blanced CT.

P2

Orange connector

1.4

Orange connector

Alternative :The earth current input is connected to the sommation of the three phase CTs.

P220/EN CO/B43 Technical Guide Connection Diagram MiCOM P220

MiCOM P220 typical connection (with 2 thermistors and 4 RTD option and analogue output options)

P0189ENb

Technical Guide Connection Diagram MiCOM P220

2.

P220/EN CO/B43 Page 7/14

CONNECTION The rear face of the MiCOM P220 relay comprises at least 2 connectors. The relay may have an optional orange third connector dedicated to the connection:

2.1

−

of 6 temperature RTD sensors or 2 thermistors + 4 RTD sensors

−

and one analogue output

Earth connection The case shall be earthed according to the local standards.

2.2

Auxiliary power The auxiliary power for the MiCOM P220 relay can be either Direct (range 24 - 60 Vdc, 48-150Vdc, 130-250Vdc) or Alternating (100-250Vac –50/60Hz). The range of voltage is specified on the relay indicator plate under the top flap of the front face. The power should be connected to terminals 33 and 34 only. A minimum 1.5mm² wire size is recommended.

2.3

Current inputs The MiCOM P220 relay has 4 analogue inputs for phase and earth currents. The nominal value of current of these measuring inputs is either 1 Amp or 5 Amp (according to the wiring diagram). The operator can, for the same relay, mix the 1 and 5 Amp inputs (phase and earth). A minimum 2.5mm² wire size is recommended.

2.4

Binary inputs The MiCOM P220 relay has five opto-insulated logic inputs of which three are programmable. Each input has its own polarity and it shall be powered with a dc voltage (see chapter 3 of this guide: Technical Specifications). The control and signalling functions to which the programmable logic inputs are assigned can be selected by means of the AUTOMAT. CTRL menu. A minimum 1mm² wire size is recommended. NOTE:

2.5

A 52a contact (CB auxiliary contact: open when CB is opened) shall be wired to the binary input n°1 (terminals 22-24).

Output relays Six output relays are available on the MiCOM P220 relay. Five relays are programmable, the last relay being assigned to the signalling of an equipment fault (WATCH DOG). All these relays are of the changeover type (1 common, 1 normally opened, 1 normally closed). The protection and control functions to which these relays are assigned can be selected via the AUTOMAT. CTRL menu.

P220/EN CO/B43

Technical Guide Connection Diagram MiCOM P220

Page 8/14 2.6

Front port connection (RS232) The front communication port is provided by a 9-pin female D-type connector located under the bottom hinged cover. It provides RS232 serial data communication (asynchronous RS232 connection according the IEC870 requirements) and is intended for use with a PC locally to the relay (up to 15m distance). The relay is a Data Communication Equipment (DCE) device. Thus the pin connections of the relay’s 9-pin front port are as follows: Pin no. 2

Tx

Transmit data

Pin no. 3

Rx

Receive data

Pin no. 5

0V

Zero volts common

None of the other pins are connected in the relay. The relay should be connected to the serial port of a PC, usually called COM1 or COM2. PCs are normally Data Terminal Equipment (DTE) devices which have a serial port pin connection as below (if in doubt check your PC manual): Pin no. 2

Rx

Receive data

Pin no. 3

Tx

Transmit data

Pin no. 5

0V

Zero volts common

For successful data communication, the Tx pin on the relay must be connected to the Rx pin on the PC, and the Rx pin on the relay must be connected to the Tx pin on the PC. Therefore, providing that the PC is a DTE with pin connections as given above, a ‘straight through’ serial connector is required, i.e. one that connects pin 2 to pin 2, pin 3 to pin 3, and pin 5 to pin 5. The cable between the MiCOM relay and the PC is a standard RS232 shielded cable (male connector on the MiCOM relay side, usually female connector on PC side).

P0179ENb

FIGURE 1 – PCFRONT PORT CONNECTION

Technical Guide Connection Diagram MiCOM P220 2.7

RS485 rear port

2.7.1

Description

P220/EN CO/B43 Page 9/14

The rear RS485 interface is isolated and is suitable for permanent connection whichever protocol is selected. The advantage of this type of connection is that up to 32 relays can be ‘daisy chained’ together using a simple twisted pair electrical connection. 2.7.2

Connection The communication connection (port RS485) is assigned on terminals 31-32 according to the MiCOM P220 relay wiring diagram.

1 3 5 7 9 11 13 15 17 19 21

2 4 6 8 10 12 14 16 18 20 22

23 25 27

29 31 33 35 37 39 41 43 45 47 49

30 32 34 36 38 40 42 44 46 48 50

24

51

52

26

53

54

28

55

56

Rear terminals

communication connections

P0180ENa

FIGURE 2 – RS485 CONNECTION

The total communication cable from the master unit to the farthest slave device is a spur, and no branches may be made from this spur. The maximum cable length is 1000m and the maximum number of devices per spur is 32. Polarity is not necessary for the 2 twisted wires. The transmission wires should be terminated using a 150 Ω resistor at both extreme ends of the cable. To this effect, link terminals 30 and 32, if the relay is connected at the end of the RS485 bus, as indicated in figure 3. Terminal 29 of each MiCOM relay shall be connected to the RS485 cable shielding, as mentioned figure 3. For only one MiCOM relay connected to the RS485 bus, link terminal 29 to the case earth as indicated in figures 2 and 3.

P220/EN CO/B43

Technical Guide Connection Diagram MiCOM P220

Page 10/14

At the extreme end of the RS485 bus, link terminals 30 and 32

For one and only MiCOM relay connected to the RS485 bus, terminal 29 is linked to the case earth

Terminal 29 shall be connected to the RS485 cable shield

Shielding

RS485 bus

2 core screened cable

Relay connected at the extreme end of the RS485 bus P0181ENa

FIGURE 3 – RS485 CONNECTION

2.7.3

RS485 cable It is recommended that a 2 core screened cable is used with a maximum total length of 1000 m or 200 nF total cable capacitance. Typical specification:

2.7.4

•

Each core:

16/0.2 mm copper conductors, PVC insulated

•

Nominal conductor area:

0.5 mm2 per core

•

Screen:

Overall braid, PVC sheathed

•

Linear capacitance between conductor and earth:

100 pF/m

Protocol convertor: RS232 -> K-Bus KITZ 101,102 and 201 can be used. Configuration is: 19200 bauds, 11 bits, full duplex.

2.7.5

RS232 / RS485 converter The following RS232/RS485 converters have been tested by AREVA T&D: •

RS_CONV1

•

RS_CONV32 :

:

convertor suitable for a short length and for up to 4 connected relays industrial convertor, suitable for up to 32 connected relays.

Technical Guide Connection Diagram MiCOM P220 2.8

P220/EN CO/B43 Page 11/14

Analogue output The MiCOM P220 relay can include an optional analogue output assigned on the 30-32 terminals (orange coloured connector) which allows certain data and measuring values to be reassembled on a current loop towards an automatic controller. The selections of the type of analogue output (options: 0-20 mA or 4-20 mA) and of the type of data to be reassembled are effected in the CONFIG. SELECT submenu. It is recommended that a 2-core screened cable is used. The cable shield shall be bonded to the MiCOM relay case earth connector. N.B.:

The analogue output shall be used either in active source mode (terminals 30c-32c), or in passive source mode (terminals 30a32a).

(1) If the current loop monitoring device is not earthed (floating potential), the cable shielding shall be bonded to the MiCOM relay case earth connector. In the other case, do not connect the cable shielding.

Case earth connector

Earthing (1) shielding 30c +

Current loop monitoring device 0-20 mA or 4-20 mA

32c -

MiCOM P220 orange connector

Screened cable

P0182ENa

FIGURE 4 – CONNECTION FOR ANALOGUE OUTPUT IN ACTIVE SOURCE MODE

2.9

RTDs The P220 relay can, as an option, be connected to 6 RTD's or to 4 RTD’s (2 thermistors option), which enables it to monitor temperature (PROTECTION G1 or PROTECTION G2 menu). The choice of these types of RTD sensors is effected in the CONFIG. SELECT submenu. It is recommended that connections between the relay and the RTD's are made using a 3-core screened cable with a total resistance less than 25 Ω in case of PT100, Ni100 or Ni120 RTD. For Cu10 RTD, the cable total resistance shall be less than 2.5 Ω. the wire also should have a minimum voltage rating of 300 Vrms. Impedance of cores connected to both terminals 2c and 4c (see figure 5) shall be of identical value. The cable shielding shall be bonded to the MiCOM relay case earth connector. Typical specification: •

Each core:

7/0.2 mm, copper conductors heat resistant PVC,

•

Nominal conductor ana:

0.22 mm2 per core

•

Screen:

Nickel-plated copper wire braid heat resistant PVC sheathed

•

Conductor impedance:

Strictly identical for 2 of the 3 cores. Accuracy difference less than 1%

P220/EN CO/B43

Technical Guide Connection Diagram MiCOM P220

Page 12/14

Case earth connector

earthing shielding

2c

RTD1

4c MiCOM P220 orange connector

6c

Screened cable P0183ENa

FIGURE 5 – RTD CONNECTION

2.10

Thermistors The P220 relay can, as an option, be connected to 2 thermistors which allows it to protect against over-temperature conditions (PROTECTION G1 or PROTECTION G2 menu). The choice between these types of thermistor is effected in the CONFIG. SELCT submenu. It is recommended that connections between the relay and the thermistors are made using a screened 2-core cable with a total resistance less than 100 Ω. The wire also should have a minimum voltage rating of 300 Vrms. Impedance of the 2 cores shall have similar values. The cable shielding shall be bonded to the MiCOM relay case earth connector. Typical specification: •

Each core:

7/0.2 mm copper conductors heat resistant PVC

•

Nominal conductor ana:

0.22 mm2 per core

•

Screen:

Nickel-plated copper wire braid heat resistant PVC sheathed.

Case earth connector

earthing Thermistor 1 shielding 2c 4c 6c

MiCOM P220 orange connector

Screened cable P0184ENa

FIGURE 6 – THERMISTOR CONNECTION

Technical Guide Connection Diagram MiCOM P220

P220/EN CO/B43 Page 13/14

2.10.1 PTC type thermistors For PTC type thermistor, it is usually possible to connect to the same input several thermistors in series as indicated in figure 7. Thermistor placed on phase A winding

Thermistor place on phase C winding

2c 4c

Thermistor 1 input

2a 4a

Thermistor 2 input

MOTOR

Thermistors placed on mechanical bearings

Thermistor placed on phase B winding

MiCOM P220 orange connector P0185ENa

FIGURE 7 – PTC THERMISTORS CONNECTED IN SERIES

2.10.2 NTC type thermistors For NTC type thermistors, it is recommended that only one thermistor is connected to each MiCOM relay input. Exceptionally, certain NTC type thermistors can be connected in parallel to the same input. However, we do not recommend such a connection.

P220/EN CO/B43

Technical Guide Connection Diagram MiCOM P220

Page 14/14

BLANK PAGE

Technical Guide

P220/EN TD/B43

MiCOM P220

Technical Data

Technical Guide Technical Data MiCOM P220

P220/EN TD/B43 Page 1/30

CONTENTS 1.

PROTECTION FUNCTIONS

3

1.1

Thermal replica

3

1.2

Short-circuit protection

3

1.3

Earth fault protection

3

1.4

Unbalance protection

3

1.5

Too long start-up protection

4

1.6

Locked rotor protection

4

1.7

Under current protection

4

1.8

RTD temperature detection or thermistors

4

2.

AUTOMATION FUNCTIONS

5

2.1

Limitation of the number of start-ups

5

2.2

Time between 2 start-ups

5

2.3

Re-acceleration authorization

5

2.4

Logic Inputs / Auxiliary timers

5

2.5

Logic Equations

5

2.6

Logic equation time delay

5

2.7

Auxiliary Output Relays

5

2.8

Latching of the output relays

5

2.9

Trip Output Relay

5

2.10

Latching of the Trip Order

5

2.11

Control and monitoring of the breaker device

6

3.

OPTIONAL FUNCTIONS

7

3.1

Optional analogue output

7

3.2

Optional 6 RTD inputs

7

3.3

Optional 2 thermistors inputs

7

4.

RECORDING FUNCTIONS

8

4.1

Event recorder

8

4.2

Fault recorder

8

4.3

Oscillography

8

5.

COMMUNICATION

9

5.1

MODBUSTM communication

9

5.2

Front communication

9

P220/EN TD/B43 Page 2/30

Technical Guide Technical Data MiCOM P220

6.

INPUTS AND OUTPUTS

10

6.1

Inputs

10

6.2

Logic inputs

10

6.3

Output relays

10

6.4

Auxiliary voltage

11

7.

ACCURACY

11

8.

CT DATA

11

9.

HIGH VOLTAGE WITHSTAND

11

10.

ELECTRICAL ENVIRONMENT

12

11.

ENVIRONMENT

12

Technical Guide Technical Data MiCOM P220

1.

PROTECTION FUNCTIONS

1.1

Thermal replica

P220/EN TD/B43 Page 3/30

Thermal current threshold 1θ>

0.2 to 1.5 In by steps of 0.01 In

Overload time-constant Te1

1 to 180 min by steps of 1 min

Start-up time-constant Te2

1 to 360 min by steps of 1 min

Cooling time-constant Tr

1 to 999 min by steps of 1 min

Negative sequence current recognition factor Ke 0 to 10 by steps of 1

1.2

1.3

1.4

Trip thermal threshold

Set to 100%

Trip thermal threshold hysteresis

97%

Thermal alarm threshold

20 to 100% by steps of 1%

Thermal alarm threshold hysteresis

97%

Start-up inhibition

20 to 100% by steps of 1%

Short-circuit protection Current threshold I>>

1 to 12 In by steps of 0.1 In

Time-delays tl >>

0 to 100 s by steps of 0.01 s

Operating time

< 30 ms

Drop-off time

< 30 ms

Hysteresis

95%

Earth fault protection Current thresholds lo>, lo>> Ion

0.002 to 1 Ion by steps of 0.001

Time-delays tlo>, tlo>>

0 to 100 s by steps of 0.01 s

Operating time

< 30 ms

Drop-off time

< 30 ms

Hysteresis

95%

Unbalance protection Negative sequence current threshold li>

0.05 to 0.8 In by steps of 0.025 In

Time-delays tli>

0.04 to 200 s by steps of 0.01 s

Negative sequence current threshold Ii >>

0.2 to 0.8 In by steps of 0.05 In

IDMT time-delay

operating time t = 1.2 / (I2/In)

Operating time

< 30 ms

Drop-off time

< 30 ms

Hysteresis

95%

P220/EN TD/B43

Technical Guide Technical Data MiCOM P220

Page 4/30 1.5

1.6

1.7

1.8

Too long start-up protection Start-up detection criteria

(Closing 52) or (closing 52 + current threshold) optional

Current threshold Istart

1 to 5 Iθ by steps of 0.5 Iθ

Time-delays T Istart

1 to 200 s by steps of 1 s

Locked rotor protection Current threshold Istall

1 à 5 Iθ by steps of 0,5 Iθ

Hysteresis

95%

Time delays tlstall

0.1 à 60 s by steps of 0.1 s

Locked rotor at start-up detection

Yes/No

Under current protection Current threshold I<

0.1 to 1 In by steps of 0.01 In

Time-delays tl<

0.2 to 100 s by steps of 0.1 s

Inhibition time at start-up Tinhib

0.05 to 300 s by steps of 0.1 s

Operating time

< 30 ms

Drop-off time

< 30 ms

Hysteresis

105%

RTD temperature detection or thermistors RTD (or THERMISTOR + RTD) function -Optional YES/NO

Technical Guide Technical Data MiCOM P220

2.

AUTOMATION FUNCTIONS

2.1

Limitation of the number of start-ups

2.2

10 to 120 min by steps of 5 min

Number of cold starts

0 to 5 by steps of 1

Number of hot starts

0 to 5 by steps of I

Restart inhibition time Tinterdiction

1 to 120 min by steps of 5 min

Time between 2 start-ups 1 to 120 min by steps of 5 min

Re-acceleration authorization Voltage collapse duration Treacc

2.4

Page 5/30

Reference period Treference

Inhibition time Tbetw 2 start 2.3

P220/EN TD/B43

0.2 to 10 s by steps of 0.05 s

Logic Inputs / Auxiliary timers 1Logic input

CB position

1Logic input

Speed Switch

3 Programmable Logic inputs Logic inputs with alarm message on occurence

2 external signals, EXT1 and EXT2

Logic inputs without alarm message on occurence 2 external signals, EXT3 and EXT4 (from V3.A software version) Timers tEXT1, tEXT2, tEXT3 and tEXT4 2.5

0 to 200 s by step of 0.01s

Logic Equations 4 « AND » logic equations

2.6

2.7

Logic equation time delay Pick-up time delay

0 to 60 min by steps of 0.1 s

Reset time

0 to 60 min by steps of 0.1 s

Auxiliary Output Relays 1 Trip Output Relay (RL1)

Programmable

4 Auxiliary Output relays (RL2,RL3,RL4,RL5)

Programmable

1 watchdog relay.( for equipment default) 2.8

Latching of the output relays Latching of the output relays (RL2,RL3,RL4,RL5)on Short-circuit, earth fault, unbalance, AND logical gates

2.9

Trip Output Relay 1 Trip Output Relay (RL1)

Programmable

(Association of one or more information to the Trip Output Relay). 2.10

Latching of the Trip Order Latching of the information(s) associated to the RL1.

P220/EN TD/B43

Technical Guide Technical Data MiCOM P220

Page 6/30 2.11

Control and monitoring of the breaker device SW Operating time alarm

0.05 to 1 by steps of 0.05 s

Number of operations alarm

0 to 50 000 operations by steps of 1

Summated contact breaking duty

106 to 4000.106 by steps of 106

Adjustment of the exponent « n »

1 or 2

Close command hold

0.2 to 5 s by steps of 0.1 s

Open command hold

0.2 to 5 s by steps of 0.1 s

Technical Guide Technical Data MiCOM P220

3.

OPTIONAL FUNCTIONS

3.1

Optional analogue output

3.2

3.3

P220/EN TD/B43 Page 7/30

Rating

0-20 mA, 4-20 Ma

Insulation

2 kV

Maximum load with active source mode

500 Ω for ratings 0-20 mA, 4-20 mA

Maximum voltage with passive source mode

24 Volt

Accuracy

± 1% full scale

Optional 6 RTD inputs RTD type

PT100, Ni120, Ni100, Cu10

Connection type

3 wires + 1 shielding

Insulation

2 kV, active supply

Setting of thresholds

0 to 200 °C by steps of 1 °C

Settings of timings

0 to 100 s by steps of 0.1 s

Influence of thermal image

Yes/No

Optional 2 thermistors + 4 RTD inputs Thermistor type

PTC or NTC

Setting of thresholds

100 to 30000 Ω by steps of 100 Ω

Time-delay

Set to 2 seconds

P220/EN TD/B43

Technical Guide Technical Data MiCOM P220

Page 8/30

4.

RECORDING FUNCTIONS

4.1

Event recorder

4.2

4.3

Capacity

75 events

Time-tag

To 1 millisecond

Triggers

Any protection alarm and threshold Any logic input change of state Self test events Any setting changes

Fault recorder Capacity

5 records

Time-tag

To 1 millisecond

Triggers

Any trip order (relay RL1 operation)

Data

Fault date Active setting group Faulty phase(s) Fault type, protection threshold Magnitude of the fault current Phases and earth currents magnitudes

Oscillography Capacity

5 records of 3 s each

Sampling rate

32 samples per frequency cycle

Pre-time setting

0.1 to 3 s by steps of 0.1 s

Post-time setting

0.1 to 3 s by steps of 0.1 s

Triggers

Any protection threshold overreach or any trip order (relay RL1 operation) Logic input Remote command

Data

4 analogue channels (3 phase currents + earth current) Logic input and output states Frequency value

Technical Guide Technical Data MiCOM P220

5.

COMMUNICATION

5.1

MODBUSTM communication

5.2

P220/EN TD/B43 Page 9/30

Mode

RTU (standard)

Transmission mode

Synchronous

Interface

RS 485, 2 wires and 1 Earth

Data rate

300 to 38400 baud (programmable)

Relay address

1 to 255

Connection

Multi-point (32 connections)

Cable type

Half duplex (screened twisted wire pair)

Maximum cable lengt

1000 meters

Connector

Connector screws or snap-on

Insulation

2 kV RMS

Front communication Interface

RS232

Protocol

MODBUSTM RTU

Connectors

Sub-D 9 pin female connector

Cable type

Screened twisted wire cable, no-crossed

P220/EN TD/B43

Technical Guide Technical Data MiCOM P220

Page 10/30

6.

INPUTS AND OUTPUTS

6.1

Inputs Phase current In

1 and 5 Ampere

Earth current Ion

1 and 5 Ampere

Frequency

Range Nominal

45 to 65 Hz 50/60 Hz

Burdens

Phase current inputs

< 0.3 VA (5A) < 0.025 VA (1A) < 0.01 VA at 0.1 Ion (5A) 100 000 operations

Technical Guide Technical Data MiCOM P220 6.4

7.

P220/EN TD/B43 Page 11/30

Auxiliary voltage Auxiliary voltage 3 ranges

24-60 Vdc 48-150 Vdc 130-250 Vdc /110-250 Vac

Variations

±20%

Residual peak to peak ripple

12 %

Power off withstand

50 ms

Burden

100 MΩ

P220/EN TD/B43

Technical Guide Technical Data MiCOM P220

Page 12/30

10.

11.

ELECTRICAL ENVIRONMENT High frequency disturbance IEC 61000-4-12

2.5 kV in common mode, class 3 1 kV in differential mode, class 3

Fast transient disturbance

IEC 61000-4-4 ANSI C37.90.1

4 kV auxiliary supply, class 4 2 kV other, class 4

Electrostatic discharge

IEC 61000-4-2

8 kV, class 4

Radio frequency impulse

ANSI C37.90.2 IEC 61000-4-3

35 V/m 10 V/m

ENVIRONMENT Temperature

IEC 60255-6 Storing and transportation Operation

–40°C to + 70°C –25°C to + 55°C

Humidity

IEC 60068-2-3

56 days at 93% RH and 40°C

Enclosure protection

IEC 60529

IP 52, IK 07

Vibration

IEC 60255-21-1

Response and endurance, class 2

Shock and bump

IEC 60255-21-2

Response and withstand, class 1

Seismic withstand

IEC 60255-21-3

Class 2

Technical Guide Technical Data MiCOM P220

12.

P220/EN TD/B43 Page 13/30

THERMAL OVERLOAD CURVES

Thermal overload characteristic curves Thermal constant times : - overload condition : T e1 = 12 minutes - start-up condition : T

e2

= 6 minutes

10 000

1 000

Operating time (seconds)

Cold curve Thermal status = 0 % 100

10

Hot curve Thermal status = 90%

1

0 0.1

1

Thermal equivalent current I eq in terms of the current thermal threshold Iθ >

10

P0159ENa

P220/EN TD/B43

Technical Guide Technical Data MiCOM P220

Page 14/30

Thermal overload characteristic curves Cold curves Initial thermal state of 0% 100 000

10 000

Te1 = Te2 = 60 mn Te1 = Te2 = 54 mn Te1 = Te2 = 48 mn

Operating time (seconds)

1 000

Te1 = Te2 = 42 mn Te1 = Te2 = 36 mn

100

10

Te1 = Te2 = 30 mn Te1 = Te2 =24 mn Te1 = Te2 = 18 mn Te1 = Te2 = 12 mn

1

Te1 = Te2 = 6 mn Te1 = Te2 = 1 mn

0 1

Thermal equivalent current I eq in terms of the current thermal threshold I θ>

10

P0160ENa

Technical Guide Technical Data MiCOM P220

P220/EN TD/B43 Page 15/30

Thermal overload characteristic curve Cold curves Initial thermal state of 0% 100 000

10 000

Te1 = Te2 = 62 mn Te1 = Te2 = 56 mn Te1 = Te2 = 50 mn

Operating time (seconds)

1 000

Te1 = Te2 = 44 mn Te1 = Te2 = 38 mn 100

Te1 = Te2 = 32 mn 10

Te1 = Te2 =26 mn

Te1 = Te2 = 20 mn Te1 = Te2 = 14 mn 1

Te1 = Te2 = 8 mn Te1 = Te2 = 2 mn

0 10

1

Thermal equivalent current Ieq in terms of the current thermal threshold I q >

P0161ENa

P220/EN TD/B43

Technical Guide Technical Data MiCOM P220

Page 16/30

Thermal overload characteristic curves Cold curves Initial thermal state of 0% 100 000

10 000

Te1 = Te2 = 64 mn Te1 = Te2 = 58 mn

Operating time (seconds)

1 000

Te1 = Te2 = 52 mn

Te1 = Te2 = 46 mn Te1 = Te2 = 40 mn 100

Te1 = Te2 =34 mn 10

Te1 = Te2 =28 mn

Te1 = Te2 = 22 mn Te1 = Te2 = 16 mn 1

Te1 = Te2 = 10 mn Te1 = Te2 = 4 mn

0 1

Thermal equivalent current Ieq in terms of the current thermal threshold I θ>

10

P0162ENa

Technical Guide Technical Data MiCOM P220

P220/EN TD/B43 Page 17/30

Thermal overload characteristic curves Hot curves Initial thermal state of 90% 100 000

10 000

Operating time (seconds)

1 000

Te1 = Te2 = 60 mn Te1 = Te2 = 54 mn Te1 = Te2 = 48 mn

100

Te1 = Te2 = 42 mn Te1 = Te2 = 36 mn 10

Te1 = Te2 = 30 mn Te1 = Te2 =24 mn

1

Te1 = Te2 = 18 mn Te1 = Te2 = 12 mn Te1 = Te2 = 6 mn Te1 = Te2 = 1 mn 0 1

Thermal equivalent current I eq in terms of the current thermal threshold I θ>

10

P0163ENa

P220/EN TD/B43

Technical Guide Technical Data MiCOM P220

Page 18/30

Thermal overload characteristic curves Hot curves Initial thermal state of 90% 100 000

10 000

1 000

Operating time (seconds)

Te1 = Te2 = 62 mn Te1 = Te2 = 56 mn

Te1 = Te2 = 50 mn

100

Te1 = Te2 = 44 mn Te1 = Te2 = 38 mn 10

Te1 = Te2 = 32 mn Te1 = Te2 =26 mn Te1 = Te2 = 20 mn

1

Te1 = Te2 = 14 mn Te1 = Te2 = 8 mn Te1 = Te2 = 2 mn 0 10

1

Thermal equivalent current I eq in terms of the current thermal threshold Ιθ >

P0164ENa

Technical Guide Technical Data MiCOM P220

P220/EN TD/B43 Page 19/30

Thermal overload characteristic curves Hot curves Initial thermal state of 90% 100 000

10 000

1 000

Operating time (seconds)

Te1 = Te2 = 64 mn Te1 = Te2 = 58 mn Te1 = Te2 = 52 mn 100

Te1 = Te2 = 46 mn Te1 = Te2 = 40 mn

10

Te1 = Te2 =34 mn Te1 = Te2 =28 mn Te1 = Te2 = 22 mn 1

Te1 = Te2 = 16 mn Te1 = Te2 = 10 mn Te1 = Te2 = 4 mn 0 1

Thermal equivalent current I eq in terms of the current thermal threshold I θ>

10

P0165ENa

P220/EN TD/B43

Technical Guide Technical Data MiCOM P220

Page 20/30

BLANK PAGE

Technical Guide Technical Data MiCOM P220

Thermal state θ (en %)

0

10

20

30

40

50

60

70

80

90

100

0

Tr = 5 mn

Tr = 12 mn

Tr = 24 mn

Tr = 96 mn

Tr = 84 mn

Tr = 60 mn

Operating time (minutes)

Tr = 72 mn

Cooling down thermal curves Initial thermal state of 90%

100

Tr = 48 mn Tr = 36 mn

P0221ENa

Page 21/30

P220/EN TD/B43

Page 22/30

0

10

20

30

40

50

60

70

80

90

100

P220/EN TD/B43

Thermal state θ (en %)

0

Tr = 144 mn

100

Tr = 132 mn

Tr = 204 mn

200

Tr = 168 mn

Tr = 108 mn

Tr = 180 mn

Operating time (minutes)

Tr = 120 mn

Tr = 192 mn

Cooling down thermal curves Initial thermal state of 90%

Tr = 156 mn

P0222ENa

Technical Guide Technical Data MiCOM P220

Technical Guide Technical Data MiCOM P220

Thermal state θ (en %)

0

10

20

30

40

50

60

70

80

90

100

0

100

200

Tr = 300 mn

Tr = 450 mn

300

Tr = 350 mn

400

Tr = 225 mn

Tr = 375 mn

Operating time (minutes)

Tr = 250 mn

Tr = 400 mn

Tr = 275 mn

Tr = 425 mn

Cooling down thermal curves Initial thermal state of 90%

500

Tr = 325 mn

600 P0223ENa

Page 23/30

P220/EN TD/B43

Page 24/30

0

10

20

30

40

50

60

70

80

90

100

P220/EN TD/B43

Thermal state θ (%)

0

Tr = 5 mn

Tr = 12 mn

Tr = 24 mn

Tr = 96 mn

Tr = 84 mn

Tr = 60 mn

Operating time (minutes)

Tr = 72 mn

Cooling down thermal curves Initial thermal state of 100%

100

Tr = 48 mn Tr = 36 mn

P0224ENa

Technical Guide Technical Data MiCOM P220

0

10

20

30

40

50

60

70

80

90

100

Technical Guide Technical Data MiCOM P220

Thermal state θ (%)

0

Tr = 144 mn

100

Tr = 180 mn

200

Tr = 108 mn

Tr = 168 mn

Operating time (minutes)

Tr = 120 mn

Tr = 192 mn

Tr = 132 mn

Tr = 204 mn

Cooling down thermal curves Initial thermal state of 100%

Tr = 156 mn

300 P0225ENa

Page 25/30

P220/EN TD/B43

Page 26/30

0

10

20

30

40

50

60

70

80

90

100

0

P220/EN TD/B43

Thermal state θ (%)

100

200

300

Tr = 325 mn

500

Tr = 350 mn

Tr = 225 mn

Operating time (minutes)

400

Tr = 375 mn

Tr = 250 mn

Tr = 400 mn

Tr = 275 mn

Tr = 425 mn

Tr = 300 mn

Tr = 450 mn

Cooling down thermal curves Initial thermal state of 100%

600 P0226ENa

Technical Guide Technical Data MiCOM P220

Technical Guide Technical Data MiCOM P220

P220/EN TD/B43 Page 27/30

Negative phase sequence protection Inverse time characteristic curve Ii>> element 10

Operating time (seconds)

Ii>> setting range from 0,2 to 0,8 I2/In

1

0 0.1

1

10

Ratio "Negative phase sequence current/rated current" : I2 / In P0227ENa

P220/EN TD/B43

Technical Guide Technical Data MiCOM P220

Page 28/30

13.

EQUIVALENCE TABLE BETWEEN THE RTD IMPEDANCE MEASURED VALUE AND TEMPERATURE

Temperature (°C)

100 OHM Platinum (Ω)

100 OHM Nickel (Ω)

120 OHM Nickel (Ω)

10 OHM Copper (Ω)

-40

84.27

79.13

92.76

7.490

-30

88.22

84.15

99.41

7.876

-20

92.16

89.23

106.41

8.263

-10

96.09

94.58

113.0

8.649

0

100.0

100.0

120.0

9.035

10

103.9

105.6

127.2

9.421

20

107.8

111.2

134.5

9.807

30

111.7

117.1

142.1

10.19

40

115.5

123.0

149.8

10.58

50

119.4

129.1

157.7

10.97

60

123.2

135.3

165.9

11.35

70

127.1

141.7

174.3

11.74

80

130.9

148.3

182.8

12.12

90

134.7

154.9

191.6

12.51

100

138.5

161.8

200.6

12.90

110

142.3

168.8

209.9

13.28

120

146.1

176.0

219.3

13.67

130

149.8

183.3

228.9

14.06

140

153.6

190.9

238.8

14.44

150

157.3

198.7

249.0

14.83

160

161.0

206.6

259.3

15.22

170

164.8

214.8

269.9

15.61

180

168.5

223.2

280.8

16.00

190

172.2

231.6

291.9

16.38

200

175.8

240.0

303.5

16.78

Technical Guide Technical Data MiCOM P220

14.

P220/EN TD/B43 Page 29/30

EQUIVALENCE TABLE BETWEEN ANALOGUE OUTPUT SIGNAL VALUE AND REMOTE MEASUREMENT The hereafter table provides equivalence data between the current signal issued from the analogue output of the MiCOM P220 and the measurement value. Rating 0 - 20 mA : Measurement type HMI sign Phase A current

Unit

Variation range

Rating 0 - 20 mA

IA RMS

Ampère 0 to 2 In

Ias * 2 In / 20 mA

IB RMS

Ampère 0 to 2 In

Is s* 2 In / 20 mA

IC RMS

Ampère 0 to 2 In

Ias * 2 In / 20 mA

IE RMS

Ampère 0 to 2 In

Ias * 2 In / 20 mA

Motor thermal state

TH STATE

%

0 to 150 %

Ias * 150 / 20 mA

Load in % of the full load current

% I LOAD

%

0 to 150 %

Ias * 150 / 20 mA

Time before a permitted start

Tbef Start

Minutes 0 to 120 Minutes

Ias * 120 / 20 mA

Time before a thermal Tbef Trip trip

Minutes 0 to 120 Minutes

Ias * 120 / 20 mA

RTD’s temperature

°C

Ias * 255 / 20 mA – 40°C

(True RMS value) Phase A current (True RMS value) Phase A current (True RMS value) Earth current (True RMS value)

T°C RTD

- 40 to 215 °C

P220/EN TD/B43

Technical Guide Technical Data MiCOM P220

Page 30/30 Rating 4 - 20 mA : Measurement type HMI sign Phase A current

Unit

Variation range

Rating 4 - 20 mA

IA RMS

Ampère 0 to 2 In

(Ias – 4 mA) * 2 In / 16 mA

IB RMS

Ampère 0 to 2 In

(Ias – 4 mA) * 2 In / 16 mA

IC RMS

Ampère 0 to 2 In

(Ias – 4 mA) * 2 In / 16 mA

IE RMS

Ampère 0 to 2 In

(Ias – 4 mA) * 2 In / 16 mA

Motor thermal state

TH STATE

%

0 to 150 %

(Ias – 4 mA) * 150 / 16 mA

Load in % of the full load current

% I LOAD

%

0 to 150 %

(Ias – 4 mA) * 150 / 16 mA

Time before a permitted start

Tbef Start

Minutes 0 to 120 Minutes

(Ias – 4 mA) * 120 / 16 mA

Time before a thermal Tbef Trip trip

Minutes 0 to 120 Minutes

(Ias – 4 mA) * 120 / 16 mA

RTD’s temperature

°C

(Ias – 4 mA) * 255 / 16 mA – 40°C

(True RMS value) Phase A current (True RMS value) Phase A current (True RMS value) Earth current (True RMS value)

NOTE :

T°C RTD

- 40 to 215 °C

– Ias is the value of the current signal generated by the analogue output. – In the case where the measurement value to remote through the analogue output is outside the permissible variation range, the current signal is restricted to the limit value of the variation range. – In the case where the thermal alarm « θ ALARM » is not energised, the current signal value meaning the time before a thermal trip « Tbef Trip » is equal to 20 mA.

Technical Guide

P220/EN AP/B43

MiCOM P220

Application Guide

Technical Guide Application Guide MiCOM P220

P220/EN AP/B43 Page 1/40

CONTENTS 1.

MOTOR CHARACTERISTICS AFFECTING SETTINGS

3

1.1

Induction motors

3

1.1.1

General

3

1.1.2

Thermal model

3

1.1.3

Start-up

4

1.1.4

Short circuits

5

1.1.5

Motor Duty rating

5

1.1.6

Motor rating as a function of altitude and of temperature

5

1.2

Environment

6

1.2.1

Fused contactor or circuit breaker

6

1.2.2

Residually connected or core-balance current transformers.

6

1.2.3

Choice of CT secondary (1A/5A) and of cross-section of secondary wiring.

7

1.2.4

Dimensioning of phase CT

8

1.3

Characteristics acquisition

8

2.

SETTING FUNCTIONS

9

2.1

PROTECTION Menu

9

2.1.1

Thermal overload [49]

9

2.1.2

Short Circuit.[50/51]

15

2.1.3

Earth fault [50N/51N]

15

2.1.3.1 Neutral earthed through an impedance

16

2.1.3.2 Insulated neutral :

17

2.1.3.3 Solidly earthed neutral

17

2.1.4

Unbalance [46]

17

2.1.5

Excessive long start [48]

18

2.1.6

Locked rotor [51LR/50S]

19

2.1.6.1 Locked rotor during the start-up stage [50S]

19

2.1.6.2 Rotor stalled during normal run [51LR]

20

2.1.7

Loss of load [37]

20

2.1.8

RTD probe [49/38] and Thermistor [49]

20

2.2

AUTOMAT. CTRL Menu

21

2.2.1

Limitation of the number of start-ups during a given period of time [66]

21

2.2.2

Time between two successive start-ups [66]

22

P220/EN AP/B43 Page 2/40 2.2.3

Technical Guide Application Guide MiCOM P220

Re-acceleration

22

2.2.3.1 Authorisation of re-acceleration

23

2.2.3.2 Load shedding on voltage dip

23

3.

EXAMPLE OF NUMERICAL APPLICATION

25

3.1

Network data

25

3.2

Motor data:

25

3.3

List of settings:

26

4.

SPECIFIC APPLICATIONS

30

4.1

Logic selectivity

30

4.2

Authorisation of re-acceleration – Load shedding on voltage dips

33

4.3

Setting groups

35

5.

BIBLIOGRAPHY

36

6.

APPENDIX A : SERVICE DUTY

37

7.

APPENDIX B : INFORMATION NEEDED FOR ADJUSTMENT

39

Technical Guide Application Guide MiCOM P220

P220/EN AP/B43 Page 3/40

1.

MOTOR CHARACTERISTICS AFFECTING SETTINGS

1.1

Induction motors

1.1.1

General Currently the majority of motors used in industry are induction and this application guide deals with these motors. The P220 relay can nevertheless be used as multifunction relay to protect a high-power synchronous motor. In this case, one should draw on the principles of protection of synchronous generators, the characteristics of synchronous generators being very close to those of synchronous motors.

1.1.2

Thermal model The physical and electrical construction of the motor is very complex, the various applications, the variety of the possible conditions of abnormal operations and the various modes of failures which can occur make the relations of its thermal state very complex. This is why, it is difficult to create a mathematical model of the thermal characteristics of the machine. There are two principal causes of damage to motors, short-circuits and heating of the windings. With regard to the heating, it is possible to model the heat propagation within the motor. •

In a sequence of heating at a constant current, the temperature of the motor varies with time similar to the charge of a capacitor under a constant voltage applied via a resistor. The applied voltage is proportional to the square of the current. The time-constant of the phenomenon is then τ = RC.

So the thermal image takes into consideration the fact that the temperature of the motor is proportional to the square of the absorbed current. TEMPERATURE = K. (IR)².(1-e-t/τ) With IR = current circulating in the Motor and producing Tmax. For a current value “I”, the temperature is TEMPERATURE = K. (I)².(1-e-t/τ) This results in : The time “t” during which the motor can support the overload current “I” is: t = τ. Ln [ 1/ { 1- ( IR / I)² }] There are three stages of heat exchange, each of them having its own time-constant: −

The start (the value of current >2*[Iθ>], [Iθ>] being the threshold of thermal overload current) during which the temperature of the copper stator windings grows before diffusing heat into the laminations, and the temperature of the rotor rises quickly,

−

The common overload (the value of current between 0 and 2*[Iθ>]), the current being close to nominal or a few percentage points higher. The phenomenon consists of a slow thermal diffusion process through the mass of the rotor and the stator.

−

The cooling-down (motor stopped), which is a slower phenomenon compared to the heating-up since the air gap is not cooled by the rotor fan.

P220/EN AP/B43

Technical Guide Application Guide MiCOM P220

Page 4/40 •

The simulation takes into account the square of the positive phase sequence component of the current, plus the product of the square of the negative component of the current by a factor Ke, to give the equivalent thermal current

Ieq: Ieq = I12 + KxI2 2 NOTE:

1.1.3

The presence of the negative sequence component of voltage across the motor terminals creates a pulsating current with a frequency of 2ω inside the rotor. This overheats the rotor considerably. The inclusion of the factor Ke in the equation above allows for the additional heating in the rotor. Negative sequence components can be created by: – an unbalanced three phase load – the presence of an external asymmetrical fault, – the loss of one or two phases.

Start-up Induction motors can be started ; −

direct-on-line

−

star-delta

−

through an auto-transformer

−

with a liquid starter,

−

by the addition of external rotor resistance

−

with an electronic starter

−

……

These limit the rotor torque and the rotor current to acceptable limits Depending on the type of start, the magnitude of the start-up current fluctuates and can even become zero (for example, during the change of connection types in a stardelta start-up). It is thus advisable to consider, the total duration of the sequence as being the start up time. The duration of start-up depends on the characteristics of the load and the motor and, therefore, cannot be derived only from the characteristics of the motor. By way of illustration one can consider the following equation: td = J ×

2∏N 1 , × 60 Cam

where

−

td :

start time

−

J:

moment of inertia of the «load + motor» set measured about the motor shaft, in kg∗m2

−

N:

speed of rotation, in RPM

−

Cam : average accelerating torque, in Nm

Technical Guide Application Guide MiCOM P220

P220/EN AP/B43 Page 5/40

The start-up current depends on the characteristics of the motor and the type of start (direct on_line, soft).

1.1.4

•

In the case of direct-on-line start-up (100% of the nominal voltage is applied across the terminals) the currents are large and can reach values up to 10 times higher than the rated current of the motor, a typical average value being of order of 5 times the rated current.

•

During soft start-ups, however the current can remain at the rated motor values. However, one should remember that during the re-acceleration stages (caused by a provisional, total or partial, loss of voltage), the motor will absorb a reacceleration current equal to its direct start-up current. This must be taken into account when adjusting the “Locked rotor” and “Short-circuit” functions.

Short circuits In the event of a short-circuit close to the motor, the motor will feed the fault by transforming its kinetic energy into electric power. The resulting current is of short duration: a few hundreds of milliseconds, except for the high-inertia motors where the current can last several seconds. In the first moments, the amplitude of this current is as high as that of the direct-on-line start-up current. Therefore, the constraints to be taken into account when setting the “ Locked Rotor” and “Shortcircuit” functions are the same as for the re-acceleration, and this contribution to the fault current should not activate these two functions. When calculating a possible short-circuit currents on the network, it will be necessary to take into account the contribution of motors to the fault current. This current contribution may even exceed double the fault current value during the first 100 milliseconds. Consequently, they affect the setting of instantaneous current base protections and the rating of the equipment to withstand the fault currents.

1.1.5

Motor Duty rating The duty ratings can be: •

Continuous

•

Temporary

•

Intermittent (periodic)

The manufacturers of motors oversize their power by a factor depending on the service duty. For the service duty chosen, one also obtains the maximum number of motor starts per hour (or, in other words, a motor will tolerate more or less starts per hour depending on its oversizing). 1.1.6

Motor rating as a function of altitude and of temperature As the altitude increases, the air becomes more rarefied so the quality of the motor cooling deteriorates. Because of this a correction factor being a function of the altitude must be applied. Likewise, as the ambient temperature rises, the efficiency of cooling decreases. This should be taken into account by applying a correction factor.

P220/EN AP/B43

Technical Guide Application Guide MiCOM P220

Page 6/40

Shown below is a monogram relating the derating factors applicable to motors at various altitudes. Temperature correction factor 40˚C 45˚C 50˚C 55˚C 80˚C

1 0.9 0.8 0.7 0.6 0.5

0

1000

2000 altitude (m)

3000 P0169ENa

The P220 relay . incorporates these derating factors within the relay. The correction is linear between 40°C (correction factor =1) and 65°C (correction factor = 0,75). For this purpose, the relay measures the ambient temperature using an external RTD (resistance temperature detector) probe. This RTD probe is usually placed near the cooling air inlet of the motor. 1.2

Environment

1.2.1

Fused contactor or circuit breaker The majority of motors, especially the low-power ones, are connected to the network via a fused contactor or fused switch. This breaking device may not have sufficient breaking capacity to interrupt the fault (short-circuit) current. The fault current can easily reach values of up to ten times the rated current of the motor. Consequently, when the current exceeds the breaking capacity of the contactor, contactor tripping should be disabled. This tripping would generate a permanent arc across the contacts leading to the destruction of the contactor. Back up fuse protection must be used to ensure that the contactor/switch is not destroyed in the event of excessive current flow. This problem does not arise when a circuit breaker is used.

1.2.2

Residually connected or core-balance current transformers. The readings of the zero-sequence current which is characteristic of an earth fault can be taken either: •

by residual connection of the 3 phase current transformers (CT) (connecting in parallel the 3 CTs and adding up the secondary currents),

•

or by the use of a core balance current transformer with a core incorporating the 3 phase conductors (adding up of the magnetic fields inside the core).

If the neutral of the network is grounded through a limiting impedance or, isolated in the case of an insulated neutral, a core balance current transformer is preferred as it avoids the possible problems of a false zero-sequence current created by the asymmetrical saturation of the phase CTs, or even the complete saturation of one of them during the start-up. These currents can reach values up to several times the motor rated current (typically 5 Inmotor), and this phenomenon can be aggravated by the magnetisation of CTs when opposite retentive fluxes exist in the CTs. These shortcomings may be overcome by employing suitable earth fault settings and by careful selection of the CTs, but the use of a core balance transformer is recommended.

Technical Guide Application Guide MiCOM P220

1.2.3

P220/EN AP/B43 Page 7/40

Type of grounding

Preferential solution

Solution alternative

Solidly earthed neutral point

3 CT (+a stabilising resistance)

3 CT + core balance transformer

Neutral earthed through impedance (ex: current limited to30A by a resistance)

3 CT + core balance transformer

3 CT (+a stabilising resistance), or

Insulated neutral

3 CT + core balance transformer

2 CT + core balance transformer (cost-effective solution) 2 CT + core balance transformer (cost-effective solution)

Choice of CT secondary (1A/5A) and of cross-section of secondary wiring. A current transformer (phase CT or balance-core current transformer) must supply the power consumed by: •

its internal resistance (design feature of CT)

•

the secondary wiring (cross-section 2.5 mm2, 4mm2, 6mm2…)

•

connected loads (one or more protection relays etc.)

If the protection relay is situated at a considerable distance from CTs, the load constituted by the wiring cannot be considered to be negligible: Example: •

relay 200 m distant from CTs

•

rated secondary current 5A

•

wiring: copper, cross-section 2.5 mm2

calculation of cable consumption: −

cable length = 2 x 200m = 400m

−

cable resistance R = 0.4 km x 18 / 2.5 mm2 = 2.9Ω

−

Hence the cable losses = 2.9Ω x (5A)2 = 73 W.

If the rated secondary current is chosen to be 1A, the cable losses are −

cable resistance R = 0.4 km x 18 / 2.5 mm2 = 2.9Ω

−

hence the wiring consumption is = 2.9Ω x (1A)2 = 2.9 W

If the CTs are not in close proximity to the relay it is advisabe to use 1A CTs to minimise the cable losses and to reduce the burden on the CTs.

P220/EN AP/B43

Technical Guide Application Guide MiCOM P220

Page 8/40 1.2.4

Dimensioning of phase CT The consumption of the phase current input terminals of the MiCOM P220 relay is: − ≤ 0.3 VA

In = 5A

− ≤ 0.025 VA

In = 1A

The rule to follow in the case of CT saturation is: •

The threshold for the short-circuit current should be set below 90% of the limiting overload current of CTs. Under these conditions the tripping is guaranteed for fault currents up to 50 times the value of saturation current without an aperiodic component of CT current.

Choice of phase CTs: •

Applications only for voltages ≤ 20 kV

•

Rf = total resistance of the wiring (+ other possible loads on CT), in Ohms

•

In = rated secondary current for CT and relay (1A or 5 A)

•

Icc = maximum symmetrical three-phase fault current of the secondary wiring of CT (in Amps).

Phase CT

CT rating

Breaking device

(IEC 185)

Note

Load in VA

Accuracy

Contactor or Switch

5A

≥ (0.3 + Rf x In2)

5P10

+ Fuse

1A

≥ (0.025 + Rf x In2)

5P10

5A

≥ (0.3 + Rf x In2)

5P K with

 Icc   Setting of the  50 × In  threshold of short-

K≥ 

Circuitbreaker

1A

≥ (0.025 + Rf x In2)

5P K with

 Icc    50 × In 

K≥  NOTE:

1.3

circuit current: ≤ 0.9 x K x In

For economic reasons, a CT with a 10% accuracy (10P) can be used instead of one with 5% (5P), however the thresholds of thermal overload and unbalance protections will be less precise, which can be perfectly acceptable if the motor has been oversized in relation to its duty or not used for heavy-duty services.

Characteristics acquisition Before setting the relay it is vital to ensure that the correct motor parameters detailed in appendix have been obtained.

Technical Guide Application Guide MiCOM P220

2.

SETTING FUNCTIONS

2.1

PROTECTION Menu

2.1.1

Thermal overload [49]

P220/EN AP/B43 Page 9/40

Overloads can result in excessive stator temperature rises in excess of the thermal limit of the winding insulation. Whilst this may not cause the motor to burn out immediately, it has been shown that the life of the motor can be shortened if these overloads persist. The life of the motor is not purely dependant on the temperature of the windings but on the time that it is exposed to these temperatures. Due to the relatively high thermal storage capacity of induction motors, infrequent overloads of a short duration may be tolerated without damage. Sustained overloads of a small percentage may result in premature ageing and insulation failure. In the same way, an unevenly distribution of load or a slight unbalance of the network brings about the appearance of negative sequence currents which also contribute to the heating of the rotor (for more details, see the negative overcurrent protection function). The motor temperature varies exponentially with the increase of the current. Similarly, the temperature decreases in the same way. So to provide a close sustained overload protection, the relay incorporates three thermal time constants, thanks to which the thermal reproduction of the relay is paired narrowly with the protected motor during heating and cooling conditions. The thermal withstand capability of the motor is affected by heating in the winding prior to the fault. The thermal replica is designed to take into account the extremes of zero pre-fault current, known as the “cold” condition, and full rated pre-fault current, known as the “hot” condition. With no pre fault current, the relay will be operating on the “cold curve”. When the motor is , or has been, running at full load prior to a fault, the windings will already be dissipating heat and the “hot curve “ is applicable. Therefore, during normal operation, the relay will be operating within these two limits, unless programmed to do otherwise. However, it should be noted that the overload protection includes the monitoring of both the stator and the rotor. This protection can be realised in various ways: •

1: direct measurement through the use of temperature sensors (see the corresponding paragraphs),

•

2: indirect measurement by the means of current measurement,

•

3: by a combination of the two preceding principles.

The P220 relay design combines all three principles listed. No.1 is detailed below in the paragraph dealing with overload protection through the use of temperature sensors. No.2 and No.3 are described in this paragraph.

P220/EN AP/B43

Technical Guide Application Guide MiCOM P220

Page 10/40

In the case of minor overloads and of light-duty service conditions, stator current measurement is sufficient to ensure protection. This control can be achieved using a time-independent current threshold setting for a definite time overcurrent protection or, still better, IDMT overcurrent protection. The thermal protection elements which are overheated by a fraction of the main current, have a time-constant which is very close to that of the motor. This makes it possible to obtain a real-time image of the thermal status of insulation. This type of protection takes into account the fact that the steady-state temperature of the motor is proportional to the square of the absorbed current, the protection is also provided with a cold curve and a hot curve to ensure that the relay takes into account the initial motor temperature. The thermal protection described above makes use of current measurement to protect the motor. Hence it will monitor balanced and unbalanced overloads. The thermal time-constant is adjustable in order to match any type of motor. The positive (I1) and negative (I2) components of the current are composed together in order to result in a equivalent thermal current replica of the temperature of the motor. 2

2

This equivalent thermal current is given by the equation : Ieq = √(I1 + Kex I2 ), where Ke is an adjustable parameter used to account for the effects of heating produced by the negative component of the current when developing the thermal image. From this equivalent thermal current, the thermal state θ of the motor is calculated every 5 cycles (every 100ms for a network of 50 Hz or 83.3ms for 60 Hz) by the relay in accordance with the following formula. θ i+1 = (Ieq/Iθ>)² . [1-e(-t/T) ] + θ i . e(-t/T) θ i : is the initial thermal state. If the absorbed current is less than the thermal overload threshold [Iθ>], thus typically less than the nominal current or the full load current, then the thermal state θ will be less than 100% , so no tripping occurs. If the absorbed current is greater than the thermal overload threshold [Iθ>], in this case the thermal state θ will be greater than 100% and so tripping will take place. In the thermal model selected, the time of tripping depends on the initial state of the motor. The equation used to calculate the tripping time for a thermal state of the motor at 100 % is: 2

2

t = T x ln[ (K - θi) / (K -1)] The equation is valid for currents whose value is constant over a certain period of time, where: −

the value of T, thermal time-constant which depends on the value of the ratio Ieq / Iθ: T = Te1 if 0 < Ieq ≤ 2*Iθ (overload curve ) T = Te2 (start-up curve ) if Ieq > 2*Iθ T = Tr Ieq=0 (cooling curve –motor stopped) if NOTE:

Ieq = 0 is obtained through the logic input No.1 of the relay which recovers the information «contactor position open».

−

Iθ = thermal current threshold setting

−

K = Ieq/ Iθ

−

θi = initial thermal state of the motor (ex.: thermal state of 50% ! θi=0.5)

Technical Guide Application Guide MiCOM P220 •

P220/EN AP/B43 Page 11/40

The heating time-constant Te1 can be estimated from the motor heating curve as shown below. Motor heating curve Temperature

θm 0.632 θ m

Te

Time P0170ENa

This curve corresponds to the following law: θ(t)

= θm * (1 – e-t/Te) ,

Where: θm

=

Te t

= =

maximum temperature after stabilisation of heat exchange, in degrees °C heating time-constant time elapsed

The heating time-constant can be clearly defined. When a motor is absorbing its rated current indefinitely, it reaches 63.2% of its steady-state temperature (θT = 63.2% θm) after one time-constant Te. The cold curve of the motor is thus given by: 2

2

t = Tr x ln[ K / (K –1)] Where the equation for the motor cooling temperature is given by.

θ = K² (1 – e –t/Tr ). When the motor is stopped, the rotor fan cooling is stopped also, hence the motor cooling down is few efficient. This causes the cooling time-constant to increase considerably This constant is generally much longer than the heating time-constant. In order to compensate for this phenomenon and to obtain a correct thermal replica, the cooling time constant is used by the relay. An adjustable cooling time-constant (Tr) is provided in order to take into account the various modes of cooling. The cooling time-constant Tr can be estimated from the motor cooling curve in the following way:

P220/EN AP/B43

Technical Guide Application Guide MiCOM P220

Page 12/40 Motor cooling-down curve Temperature

θm

0.368 θ m

Tr

Time P0171ENa

This curve corresponds to the following law: θ(t) = θm * e-t/Tr, Where: θm Tr t

= = =

maximum temperature when motor is stopped cooling time-constant time elapsed

The cooling time-constant can be clearly defined . When a motor is stopped, its internal temperature decreases with time. This internal temperature reaches 36,8% of the initial temperature (temperature at the time when the motor was turned off) at the end of the period, which is equal to its time-constant Tr. The P220 relay also has: •

a thermal alarm to inform the user (when in operation mode) if the motor is likely to become overloaded before a trip occurs. Remedial action can then be taken before the motor is tripped.

•

Inhibition of a thermal tripping during starting

During the start-up stage (i.e. during the parametrically defined start-up delay time tIstart), it is possible to inhibit thermal tripping. When thermal inhibition during start-up is enabled, the calculation of the thermal state during the start-up delay time tIstart remains effective but should this value exceed 90%, the value of the thermal state would be retained at 90%. When the start-up delay time expires, the thermal inhibition during start-up disappears. This function does not affect the operation of the thermal alarm feature. This inhibition during start-up can be useful for certain motors which can withstand a locked rotor for a very short time but normally have very long start up times. This can be the case of certain motors started using reduced voltage. The time-constant Te2 is then set to take into account rapid heating which occurs if the rotor is locked, whereas the motor would be thermally protected during the start-up stage by the function «Start-up too long» and, as the case may be, by the temperature sensors.

Technical Guide Application Guide MiCOM P220

P220/EN AP/B43 Page 13/40

•

Thermal prohibition of restart

•

To a certain extent, the thermal overload protection can limit the number of startups by selecting a curve located just above the point of start-up. It is is actually very difficult to satisfy the manufacturer’s recommendations, for the limit of the number of starts by the thermal overload protection. This may allow the motor to start and then to exceed the maximum temperature.

The purpose of the "Thermal prohibition of start-up "function is to avoid thermal tripping during the start-up sequence of the motor. The motor will have to cool down before it will be authorised to start. The tripping time for the thermal replica protection is calculated in the following way: ttrip = T * ln { [(Ieq / Iθ>)2 - θinitial] / [(Ieq / Iθ>)2 - 1] }

(1)

in order to avoid thermal tripping during the start-up stage, ttrip > td. Therefore, according to (1), td < Te2 * ln { [(Id / Iθ>)2 - θforbid start] / [(Id / Iθ>)2 - 1] } Hence it follows that the setting of the threshold of prohibition of start-up θforbid must be lower than: θforbid start < [(Id / Iθ>)2 * (1 – exp(td / Te2))] + exp

start

(td / Te2)

Where: Id td Te2 Iθ> ttrip •

= = = = =

actual start-up current, actual start-up time, thermal time-constant at the moment of start-up, current threshold of thermal overload, time of tripping for the thermal replica protection.

Thermal image influenced by the ambiant temperature

At the beginning of this paragraph we said that the overload protection afforded by the P220 relay can also be ensured by a combination of a temperature sensor (direct heating measurement), and a current measurement (indirect heating measurement). In this case, it is possible to modify the calculated thermal image of the motor by making use of information about the temperature outside of the motor. The programmed thermal current threshold can be corrected using correction factors to give a more precise representation of the thermal state of the motor. This thermal current threshold correction factor is applied automatically by the relay when calculating the thermal state of the motor – if this facility is set on. The values of this factor is given below: Ambient temperature

40°

45°

50°

55°

60°

65°

Thermal current threshold correction factor (Coef)

1

0.95

0.90

0.85

0.80

0.75

P220/EN AP/B43

Technical Guide Application Guide MiCOM P220

Page 14/40 A typical setting of the thermal protection is : −

Thermal overload current threshold [Iθ >] : between 105% et 108% (max.) of the motor rated current (this threshold is typically equivalent to the full load current). NOTE:

The nominal current : is the current value for which the moteur supplies his maximum efficiency. The Full Load current : is the limit value of the thermal current value of the motor with the time under its continuous duty rating (This term is used in North of America)

−

Negative sequence current recognition factor : [Ke] = 3

−

Heating time-constants (Te1), during the start-up (Te2) and the cooling-down time constants (Tr): The manufacturer should be consulted for the heating and cooling time constants. ⇒ Te1 must be set to be equal to, or even slightly lower than the motor manufacturer’s value ( Stator thermal heating). ⇒ Te2 must be typically set to be lower than or equal to Te1. It is used to modify the thermal curve of the motor during the start phase . In case of a SOFT start, (Yye/Delta) for example, the current absorbed by the motor after the start phase is 57% of the current controlled by the relay (Delta connection) while durning the start phase ( Yye connection), the current absorbed by the motor is equal to the current monitored by the relay. For that, Te2 is used to reduce the operating time during the start up. For application with Direct-on-line start up, adjust Te2=Te1, which results in one thermal curve. ⇒ It is important to plot the thermal characteristics chosen to assure that the “COLD” curve has no intersection area with the start up charactersistics. In certain applications, the time constants could not be available. However, a graphical presentation of these values could be given. In this case, Te1 should be selected so once it is plotted, it will match the cold motor curve. ⇒ For applications where neither constant time values nor thermal curves are given, Te1 and Te2 should be chosen in such a way that they fall above the start up characteristics but below the motor locked Rotor current threshold. In this way, the thermal overload protection assure to a certain degree the protection under locked rotor conditions. ⇒ The cooling-down time-constant Tr should ideally be set slightly higher than the value provided by the manufacturer. This element is important with motors having differents functionning cycles because the precise information of the motor thermal state is needed during heating and cooling phases. Il is usually a multiple of Te1.

REMARK: IF HOWEVER THE MANUFACTURER’S DATA ARE NOT KNOWN, ONE SHOULD SET THE FOLLOWING VALUES: TE1 = TE2 = 14MIN AND TR = 28MIN.

Technical Guide Application Guide MiCOM P220 •

2.1.2

P220/EN AP/B43 Page 15/40

Alarm threshold θALARM: Its setting is primarily related to the motor operation modes and the concept of protection. A typical adjustment consists of setting the threshold θALARM to be slightly higher than the ratio (Irated motor / Iθ>)2 , which generally corresponds to a value of about 90%.

Short Circuit.[50/51] A phase to phase short-circuit at the terminals of the motor or in the feeder cables, draws very large currents capable of damaging the motor and its feeder cable This also poses the threat of fire within the motor room. In this case ,it is essential to detect the fault and to send the tripping command rapidly to the breaking device. To attain these objectives, the P220 relay is provided with an overcurrent element operating on fundamental component, with a settable definite time delay. The current threshold must be set as low as possible, without tripping due to −

the start-up current of the motor

−

the contribution of the motor to an external fault as well as

−

the re-acceleration current due to voltage drops.

In order to achieve this, the direct on-line start-up current must always be taken into account in the calculation of the setting even if the motor started under reduced voltage (soft start). Thus the short-circuit current threshold must be set higher than the direct on-line start-up current value. Taking into account aperiodic current components, the typical settings are: −

[I>>] = 130% x kstart x Inmotor

and

[tI>>] = 100ms

−

[I>>] = 180% x kstart x Inmotor

and

[tI>>] = 0 ms

where kstart : start-up current of the motor in per unit. It should then be checked that the threshold [I>>] is lower than : −

90% of the limiting saturation current of the CTs used, and

−

1/3 of the minimum three-phase fault current at the motor terminals.

IMPORTANT:

2.1.3

IF A FUSED CONTACTOR IS USED TO CONTROL THE MOTOR , THE SHORT CIRCUIT PROTECTION MUST NOT TRIP THE CONTACTOR. THE SHORT CIRCUIT PROTECTION MUST BE DISABLED AND THE FUSE SHOULD INTERRUPT THE FAULT CURRENT. IF THE CONTACTOR IS ALLOWED TO INTERRUPT FAULT CURRENT, SERIOUS DAMAGE COULD BE CAUSED DUE TO EXCESSIVE ARCING AT THE CONTACTS.

Earth fault [50N/51N] Overheating of the stator windings is likely to lead to insulation deterioration. Since the windings are surrounded by an earthed metal case, stator faults usually manifest themselves as earth faults. To protect against this, the P220 relay is provided with two independent earth fault overcurrent elements with settable definite time delays. This function reacts only to the fundamental component of the earth fault current, and thus remains insensitive to the disturbances of the higher-order harmonics (equal to or higher than 2).

P220/EN AP/B43

Technical Guide Application Guide MiCOM P220

Page 16/40

The earth fault protection function may be provided either by residual connection of the 3 phase current transformers (CTs), or by the use of a core-balance current transformer. It is preferable to use a core balance current transformer as this is more stable and is more sensitive. If residually connected CTs are used, the tripping setting would have to be increased by as much as 10 % higher than the rated current of the CT. This is highly undesirable because of the resulting increase in the earth fault current setting. Incorrect tripping can result from the saturation of one or more CTs during motor starting. Increased stability can be achieved in two ways : •

increasing the current threshold,

•

insertion of a stabilising resistance in series with the P220 relay.

The value of stabilising resistor can be found from the following equation. Rstab > (Id / Is) * (RCT + 2*Rf + RRE), where: Id

=

start-up current magnitude brought to the secondary

Is

=

earth fault setting in Amps (threshold Io> or Io>>)

RCT

=

dc resistance of CT secondary windings.

Rf

=

resistance of single lead from CT to relay

RRE

=

other resistances connected in series to the CT (relays etc.)

The following earthing systems may be employed. 2.1.3.1 Neutral earthed through an impedance The earth fault current is mainly comprising active current component resulting from the resistance of neutral point, the capacitive zero sequence (residual) contribution from the cables being of much lower value, even negligible. Typical settings are : •

•

in the case of a residual connection to three phase CTs: −

[Io>>] is higher than 10% of the CT rated primary current, and

−

2 times higher than the capacitive residual current resulting from the motor feeder cables in case of external fault, and

−

lower than the residual current resulting from the resistance of neutral point, and

−

[t Io>>] = 100 ms

in the case of a core balance transformer. −

[Io>>] is 2 times higher than the capacitive residual current resulting from the motor feeder cables in case of external fault, and

−

lower than the residual current resulting from the resistance of neutral point,

−

[tIo>>] = 100 ms

Note that current settings lower than 1 Amps are usually not applied.

Technical Guide Application Guide MiCOM P220

P220/EN AP/B43 Page 17/40

2.1.3.2 Insulated neutral : A core balanced transformer is used as the fault current is due to the cable capacitive leakage current. A single earth fault will not cause the relay to trip but the fault should be localised . Typical settings are : −

[ Io>> ] is 2 times higher than the capacitive residual current resulting from the motor feeder cables in case of external fault, and

−

lower than the capacitive residual current resulting from the other cables,

−

[tIo>>] = 100 ms.

Note that current settings lower than 1 Amps are usually not applied. If these settings are not compatible with the maximum value of the earth fault current, it is then necessary to use a directional earth fault relay. 2.1.3.3

Solidly earthed neutral The earth fault current is mainly inductive current, with magnitude being close to that of the three-phase short-circuit fault currents. The contribution of capacitive residual current from the cables is negligible. Typical settings are : •

2.1.4

in the case of a residual connection to three phase CTs: −

[Io>>] is higher than 10% of the CT rated primary current, and

−

[tIo>>] = 100 ms

Unbalance [46] Under normal motor running conditions only positive sequence current components flow. The presence of a negative sequence component produces a field revolving in an opposite direction to that of the rotor. It induces rotor winding currents at double the supply network frequency. The skin effect in the rotor winding bars at this frequency can cause a significant increase in the resistance of the rotor. The rotor will overheat leading to deformation of the rotor bars and damage to them. This imposes additional heating of the stator that is in excess of the manufacturers rating. Even if the thermal protection provided by this relay takes into account negative sequence component of the current, it will not account for the additional heating due to high unbalance rate. In the event of the motor losing one phase of its supply, considerable overheating would occur, hence protection for negative sequence is employed separately In order to provide this function, the P220 relay is equipped with two independent negative sequence overcurrent elements. The first one, denoted by [Ii>], is an alarm threshold associated with an adjustable constant time. The second, denoted [Ii>>], is a threshold of tripping associated with a inverse time characteristic curve. The features of this curve are described in chapter 5.3 of this technical guide. The equation of this curve is : for 0.2 < (I2/In) < 2 --> t = 1.2 / (I2/ In)

P220/EN AP/B43 Page 18/40

Technical Guide Application Guide MiCOM P220

This type of curve has the following advantages: 1.

For an external fault:

•

to desensitise the relay during a violent unbalance fault occurring upstream or on external feeders, when the motor temporarily behaves like a negative current generator ; selective tripping at the faulty feeder level is secured - the inverse time characteristic curve allows co-ordination with the faulty feeder protection relay.

•

to avoid nuisance tripping which may occur due to high starting currents causing the CTs to saturate.

2. •

For a motor fault. To ensure rapid fault interruption, but to retain co-ordination with protective fuses when fused contactors are used.

It should be noted that the single-phase and two-phase faults also generate negative currents. However, the value of the single-phase fault current is generally limited, and in any case these faults are eliminated by relevant protection with a time shorter than that afforded by the IDMT curve. Typical settings are

2.1.5

•

alarm threshold : [Ii>] = 15% of the motor rated current, with a delay time of about 8 to 10s,

•

tripping threshold : [Ii>>] = 20% of the motor rated current.

Excessive long start [48] The start-up current is specific to each motor and depends on the start-up method used (direct on-line, autotransformer, rotor resistance insertion, etc.). As for the startup time, it is dependent of the load connected to the motor. During the start-up period, this current surge imposes a thermal strain on the rotor. This is exaggerated as the rotor will have lost all of its ventilation because it does not rotate at the full speed. Consequently, a long start-up causes a rapid heating of the motor. For this reason, this protection is complementary to the thermal overload protection, and makes it possible to check that the start-up sequence does not exceed the parameters given by the manufacturer The MiCOM P220 relay offers the choice of motor start-up detection as follows : •

closure of the contactor/circuit breaker, or

•

closure of the contactor/circuit breaker and overshoot of the starting current threshold [Istart].

The user can configure either option using the CONFIGURATION menu. Method 1 is recommended. This detects the start sequence on the circuit breaker closure. The function " Excessive long start " is initiated either by the detection of a start-up sequence, or (under normal operation) by the detection of a phase of re-acceleration. If at the end of delay time [tIstart] the current remains higher than the threshold [Istart], then a trip takes place.

Technical Guide Application Guide MiCOM P220

P220/EN AP/B43 Page 19/40

Typical settings are : •

[Istart] is equal to: ⇒ 1.5*[Iθ>] if the motor start-up current is lower than 4 times the rated current; ⇒ 2*[Iθ>] if the motor start-up current is equal to or higher than 4 times the rated current and lower than 8 times the rated current; ⇒ 3*[Iθ>] if the motor start-up current is equal to or higher than 8 times the rated current.

• 2.1.6

[tIstart] = 120 % of the time of start-up and shorter than withstand time for the motor.

Locked rotor [51LR/50S] There are two possible conditions for the rotor becoming locked : at motor start-up or during normal run. Whatever the case, a locked rotor produces an input current equivalent to the direct on-line starting current. The most frequent cause of a locked rotor is to a phase break (eg: melting of a fuse protecting the motor, or one pole of a contactor remaining open.). A stationary motor can not start and remains stationary with two phases feeding the stator. In the same way, a locked rotor can take place after the loss of a phase after the motor has been working normally. The appearance and the importance of a locked rotor depend on the motor load at the time when the loss of phase occurs. In both cases the result is likely to be a thermal overloading of the rotor windings. Under healthy conditions, a revolving flux is induced in the rotor, which generates balanced rotor current in the windings which produce symmetrical rotor heating. In the event of the loss of one phase of the supply, a heterogeneous flux is induced in the rotor as a result of the positive component and the negative components of the current. This causes uneven heating of the rotor windings which depend on the position of the rotor bars. This can lead to the damage of the rotor bars. For these reasons, it is important to eliminate the fault as quickly as possible.

2.1.6.1 Locked rotor during the start-up stage [50S] This function is enabled only during the motor start-up stage. In order to take advantage of this function, the motor has to be equipped with a tachometric control, which indicates if the motor turns. This information is carried to a digital input of the relay so that the relay can detect whether the motor’s speed is or is not zero. A locked rotor is detected if, after expiration of delay time [tIstall], the digital input indicates zero speed (logic 0). Motors for which the real start-up time is shorter than their locked rotor withstand time can be protected against locked rotor condition at start-up without the help of a tachymetric control device (speed switch). For such cases, the use of [tIstart] time setting (refer to « [48] Excessive long start » function) shorter than the motor locked rotor withstand time allows to provide efficient protection against both too long start-up sequence and locked rotor at start-up conditions.

P220/EN AP/B43 Page 20/40

Technical Guide Application Guide MiCOM P220

2.1.6.2 Rotor stalled during normal run [51LR] This function is valid only outside the re-acceleration and start-up stages. Tripping takes place if the current remains higher than [Istall] for a time period equal to or higher than delay time [stall]. Typical settings of the function [ 51LR/50S ] are : •

[Istall] : ⇒ 1.5*[Iθ>] if the motor start-up current is lower than 4 times the rated current; ⇒ 2*[Iθ>] if the motor start-up current is equal to or higher than 4 times the rated current and lower than 8 times the rated current; ⇒ 3[Iθ>] if the motor start-up current is equal to or higher than 8 times the rated current.

•

2.1.7

[tIstall] is 1 to 2 s for a pump and a fan, and 5 to 10 s for a crusher. In all the cases, this setting must be lower than the withstand time for the motor with the rotor stalled.

Loss of load [37] This function makes it possible to detect the motor running without a load connected on the output shaft. It is automatically disabled when the motor is off, and it is reactivated after the inhibit time has expired [Tinhib]. This delay time [Tinhib] allows the motor to perform an off-load start. The use of this undercurrent protection function allows: •

protection against the electrical pumps becoming unprimed.

•

protection against a drive belt or drive shaft breakdown.

Typical settings are:

2.1.8

•

[I

Vn = 6.2kV – 50 Hz

–

rated current

==>

In = 256 A

–

open-circuit (no-load) current

==>

Ino-load = 134A

–

start-up type (direct-on -line, soft)

==>

Direct

–

start-up current

==>

---

–

direct start-up current (if soft start used)

==>

Id = 5.4*In i.e. 1382A

–

start-up time

==>

td = 4 s

–

maximum repetition frequency of starts

---->

Hot = …x 2, cold = …x 3

–

withstand time for locked rotor (for hot & cold start)

---->

2s

–

heating curve

==>

---

–

time-constants of: heating , start-up, cooling- down ==>

–

transient characteristic curve at unbalance

---->

---

–

permanent allowable unbalance

---->

---

–

motor service use (driven equipment: compressor, crasher, mill, pump, fan...)

==>

pump

–

start-up : no-load/ load

---->

no-load (30 s loading after the end of start-up)

14min, 10min, 28min

P220/EN AP/B43

Technical Guide Application Guide MiCOM P220

Page 26/40 3.3

List of settings: OP PARAMETERS Menu

Password

AAAA

Reference

ALST

Frequency

50 Hz

CONFIGURATION Menu CONFIG.SELECT Submenu Change Group Input

EDGE

Setting Group

1

Default display

% I LOAD

Start detection criterion

52A (closing of the breaking device)

Analogue output type (optional)

4 - 20 mA

Value transmitted by the analogue output (optional)

% I LOAD

RTD type (optional)

PT100

CT RATIO Submenu Primary rating of the phase CT

300

Secondary rating of the phase CT

5

Primary rating of the earth CT

25

Secondary rating of the earth CT

1

LED 5, LED 6, LED 7 and LED 8 Submenus

LED 5

LED 6

LED 7

LED 8

Assignment: thermal tripping (overload)

No

No

Yes

No

Assignment: thermal alarm θALARM

No

No

No

Yes

Assignment: tI>>

Yes

No

No

No

Assignment: tIo>

Yes

No

No

No

Assignment: tIo>>

Yes

No

No

No

Assignment: tIi>

Yes

No

No

No

Assignment: tIi>>

Yes

No

No

No

Assignment: tI<

Yes

No

No

No

Assignment: tIstart (excessively long start)

No

Yes

No

No

Assignment: tIstall (stalled rotor when running)

No

Yes

No

No

Assignment: locked rotor at start

No

Yes

No

No

Assignment: emergency restart

No

No

No

No

Assignment: forbidden start

No

No

No

Yes

Assignment: tRTD1 ALARM, tRTD2 ALARM, tRTD3 ALARM (optional)

No

No

No

Yes

Assignment: tRTD1TRIP, tRTD2 TRIP, tRTD3 TRIP (optional)

No

No

Yes

No

Technical Guide Application Guide MiCOM P220

P220/EN AP/B43 Page 27/40

LED 5, LED 6, LED 7 and LED 8 Submenus

LED 5

LED 6

LED 7

LED 8

Assignment: tRTD4 ALARM, tRTD5 ALARM, tRTD6 ALARM (optional)

No

No

No

Yes

Assignment: tRTD4 TRIP, tRTD5 TRIP, tRTD6 TRIP (optional)

No

No

Yes

No

Assignment: Thermist 1 and Thermist 2 (optional)

No

No

No

No

Assignment: tEXT1

No

No

No

No

Assignment: tEXT2

No

No

No

No

Assignment: motor stopped

No

No

No

No

Assignment: motor running

No

No

No

No

Assignment: successful start

No

No

No

No

Configuration Inputs submenu Inputs : 54321

11111

COMMUNICATION MODBUS Menu Communication enabled ?

Yes

Data transmission rate

19 200 Bauds

Parity

No

Number of data bits

8

Number of stop bits

1

Relay address

1

Date Format

PRIVATE

Programming for Group No.1 of PROTECTION Menu: THERM.OVERLOAD[49] Submenu

Primary setting

Secondary Comments setting

Thermal overload function enabled ?

Yes

Thermal inhibition on start enabled ?

No

Threshold Iθ>

270 A

0.9In (CT)

5.5% of overload authorised = 1.055 x In(motor)

Ke

3

Te1

14 min

See motor characteristics

Te2

10 min

See motor characteristics

Tr

28 min

See motor characteristics

Influence RTD (optional)

No

θALARM enabled?

Yes

Thermal alarm threshold θALARM

92%

θ FORBID START enabled ?

Yes

FORBID START

78%

0,92 > (256 / 270)2

0,78 < (1382 / 270)2 * (1-exp(4 / 10*60)) +exp(5 / 10*60))

P220/EN AP/B43

Technical Guide Application Guide MiCOM P220

Page 28/40 Submenu [50/51] SHORT-CIRCUIT

Primary setting

Short-circuit function enabled ? Threshold I>>

Yes 1800A

tI>> Submenu [50/51] EARTH FAULT

Secondary Comments setting 6In 0.1s

Primary setting

Secondary Comments setting

Earth fault function enabled ?: threshold Io>

No

Thresholds Io>

0.002Ion

tIo>

0s

Earth fault function enabled ?: threshold Io>>

Yes

Threshold Io>>

2A

tIo>> Submenu [46] UNBALANCE

0.08Ion

Only one earth fault current threshold can be programmed

Setting to 6,7 % of maximum earth fault current

0.1s Primary setting

Function Unbalance enabled ?: threshold Ii> Threshold Ii>

130% of motor start-up current

25.6 A

Secondary Comments setting Yes

Alarm threshold enabled

0.085 In (CT)

Setting to 10% of Inmotor

tli>

10s

Function Unbalance enabled ?: threshold Ii>>

Yes

Tripping threshold enabled Setting to 20% of Inmotor

Threshold Ii>>

51.2A

0.171 In (CT)

Submenu [48] EXCESS LONG START

Primary setting

Secondary Comments setting

Excess long start function enabled ? Threshold Istart tIstart

Yes 540A

2Iθ

Id = 5.4*Inmotor ! Istart = 2*Iθ

5s

1.2 * td = 4.8s

Technical Guide Application Guide MiCOM P220 Submenu [51LR/50S] BLOCK ROTOR

P220/EN AP/B43 Page 29/40 Primary setting

Secondary Comments setting

Block rotor function enabled ?

Yes

tIstall

1.8s

Stalled-in-run rotor function enabled ?

Yes

Threshold Istall

540A

Blocked-at-start rotor function enabled ? Submenu [37] LOSS OF LOAD

Primary setting

Loss of load function enabled ?

See motor characteristics

2Iθ

Id= 5.4*Inmotor ! Istall = 2*Iθ

Yes

Presence of zero speed detector is necessary (speed switch)

Secondary Comments setting Yes

Motor-driven pump

0.55In

Higher than no-load current

tI<

3s

Depends on process

Tinhib

40s

Tinhib > (5 + 30)

Threshold I<

Submenu [66] START NUMBER

165A

Primary setting

Secondary Comments setting

Start number limitation function enabled ?

Yes

Treference

60 min

Hot starts number

2

Cold starts number

3

Tinterdiction

30 min

Submenu MIN TIME BETW 2 START

Primary setting

Secondary Comments setting

Time between starts function enabled ?

Yes

Tbetween 2 start

10min

Submenu RE-ACCEL AUTHORIZ

Primary setting

Parameters depend on trade-off of motor characteristics against process requirements

Parameter depends on trade-off of motor characteristics against process requirements

Secondary Comments setting

Re-acceleration authorisation function enabled ?

Yes

Treacc

0.2s

Parameter depends on trade-off of motor characteristics against process requirements

P220/EN AP/B43

Technical Guide Application Guide MiCOM P220

Page 30/40

4.

SPECIFIC APPLICATIONS

4.1

Logic selectivity The objective is to reduce the fault clearing times by reducing the selectivity steps. Thus the logic selectivity makes it possible to reduce the clearing time of the busbar fault while preserving a perfect co-ordination between protection devices. The example given below involves the MiCOM P122 relay but it is absolutely possible to replace it by another MiCOM relay used as lead-in protection, for example a standard relay P123, P141, P142 or P143.

P122 26

28 _

Logic selectivity

+ 7

+ 7

11

P220 M1

+ 11

7

P220

M2

11

P220

M3 P0173ENa

In our example, the delay times of short-circuit protection (I>>) and earth fault protection (Io>>) of the P220 (downstream protections) and P122 (upstream protection) relays are set to 100 ms. A fault on the busbars will be detected only by protection (P122) and the command to clear the fault will be generated after 100ms. In the event of fault on a motor feeder cable, the P220 relay protecting it will send a signal through to the P122 relay. On receipt of this logic signal the P122 relay will use a logically selected delay that has been separately set. This delay time will replace the normal delay time while there is an output from one of the P220 relays. In our example, it could be set to 350 ms to correspond to a 250 ms selectivity step between the downstream protection and the upstream protection. Thus, 100 ms after the appearance of the fault, protection P220 of the outgoing motor feeder will generate the command to clear the fault. In the event of non-clearance of the fault, the fault can be eliminated selectively 250 ms later thanks to the upstream protection used in logic selectivity.

Technical Guide Application Guide MiCOM P220

P220/EN AP/B43 Page 31/40

NOTE:

•

• •

The MiCOM P220 relays located downstream can deliver following instantaneous information indicating that a current threshold was exceeded: – phase overcurrent threshold I>> – earth overcurrent threshold Io> – earth overcurrent threshold Io>> If this facility is required then additional cabling will be required between the output contacts of the motor protection relay and the selected logic input of the upstream relay. The logic selectivity delay time of the upstream relay must be set selectively with reference to the settings of normal delay times for the I>> and Io>> thresholds of the downstream relays.

Example of programming: Logic selectivity between the P220 protections installed on the motor outgoing feeders and the MiCOM P122 protection relay on the lead-in. P220 relay PROTECTION menu: SHORT-CIRCUIT submenu [50/51] Designation

Function

Programming

FUNCTION I>> ?

Use of the short-circuit threshold (I>>) enabled ?

yes

tI>>

Delay time of the phase overcurrent threshold

100ms

PROTECTION menu: EARTH FAULT submenu [50N/51N] Designation

Function

Programming

FUNCTION Io>> ?

Use of the 2nd earth overcurrent threshold (Io>>)

yes

tIo>>

Delay time of the 2nd earth overcurrent threshold

100ms

AUTOMAT. CTRL Menu: Submenu AUX OUTPUT

5

4

3

2

Assignment I>>

1

0

0

0

Assignment Io>>

1

0

0

0

The instantaneous information of one of thresholds I>> and Io>> being exceeded is transmitted to the output relay RL5 of the P220 relay.

P220/EN AP/B43

Technical Guide Application Guide MiCOM P220

Page 32/40 MiCOM P122 (or P123 or P140) relay PROTECTION menu: [50/51] PHASE O/C Submenu Designation

Function

Programming

[51] I>>

Use of the 2nd phase overcurrent threshold (I>>) enabled ?

yes

tI>>

Delay time of the 2nd phase overcurrent threshold

100ms

PROTECTION menu: [50N/51N] E/Gnd Submenu Designation

Function

Programming

[51N] Ie>>

Use of the 2nd earth overcurrent threshold (Io>>) enabled ?

yes

tIe>>

Delay time of the 2nd earth overcurrent threshold

100ms

AUTOMAT. CTRL Menu: INPUTS Submenu Designation

Function

Programming

INPUT 2

Parameter setting of the logic input No.2 to receive the logic selectivity command

SL LG1

AUTOMAT. CTRL Menu: SEL LOG1 Submenu Designation

Function

Programming

SEL1 tI>>

Use of "logic selectivity" function to protect the 2nd phase overcurrent threshold (I>>) enabled ?

yes

SEL1 tIe>>

Use of "logic selectivity" to protect the 2nd earth overcurrent threshold (Ie>>) enabled ?

yes

tSEL1

Setting of delay time associated to the "logic selectivity" function

350 ms

Technical Guide Application Guide MiCOM P220 4.2

P220/EN AP/B43 Page 33/40

Authorisation of re-acceleration – Load shedding on voltage dips Let us consider three motors M1, M2 and M3 connected to the same busbars. A voltage relay, for example MiCOM P922 relay, is used to detect any voltage dip on the busbars. Each MiCOM P220 relay receives from the P922 relay the “voltage dip” information via its logic inputs. The following functioning is required: −

In the event of voltage dip shorter than 250 ms, the re-acceleration of the motor M1 must be possible, but if the voltage dip is longer than 250 ms the motor M1 must be stopped.

−

In the event of voltage dip duration equal or longer than 100 ms, the motors M2 and M3 must be stopped.

MiCOM P922 18

20

+

_ 17 19

_

_

21 23

17 19

P220

M1

_ 17 19

P220

M2

P220

M3 P0174ENa

P220/EN AP/B43

Technical Guide Application Guide MiCOM P220

Page 34/40 Programming the P220 relay associated to the motor M1: REACCEL AUTHORIZ Submenu Function Authorisation of re-acceleration enabled ?

Yes

Treacc

250 ms

INPUTS Submenu Assignment input No.3

NONE

Assignment input No.4

EXT 1

Assignment input No.5

VOLT. DIP

tEXT1

250 ms

Logic input No.4 is used to stop the motor in the event of a prolonged voltage dip, logic input No.5 is used to authorise re-acceleration. AUTOMAT. CTRL Menu: TRIP OUTPUT RLY Submenu EXT 1 ?

Yes

Information of tripping EXT 1 is sent to the trip output relay (RL1). Programming the P220 relays associated to the motors M2 and M3: REACCEL AUTHORIZ Submenu Re-acceleration authorisation function enabled ?

No

Treacc

0,2 second

INPUTS Submenu Assignment input No.3

NONE

Assignment input No.4

EXT 1

Assignment input No.5

NONE

tEXT1

100 ms

Logic input No.4 is used to stop the motor in the event of a voltage dip whose duration is equal to or more than 100 ms. AUTOMAT. CTRL Menu: TRIP OUTPUT RLY Submenu EXT 1 ?

Yes

Information of tripping EXT 1 is sent to the trip output relay (RL1).

Technical Guide Application Guide MiCOM P220 4.3

P220/EN AP/B43 Page 35/40

Setting groups If an electrical network can be fed from two different sources of supply, the relay can make use of two different setting groups each individually set to accommodate the parameters of the two networks. For example if a network is normally fed via the mains distribution system, and it is provided with a standby emergency generator, the relay can be provided with two groups of fault settings for the two sources of supply. The passage of a group of parameters to another will have to be carried out each time the network’s supply mode changes (distributor mains/generator). A pulse will have to be sent to a logic input of the relay that has been programmed to allow this. The use of the two groups of settings also proves useful for double-speed motors. For these motors, the setting group No.1 could be used when the motor turns at the lower speed (1), the setting group No.2 being used when the motor turns at the higher speed (2) An impulse must be sent to the relay each time the motor changes speed so that it passes from one setting group to the other.

G

+

_

_

13 15

13 15

P220

P220

M1

M2

_ 13 15 11 P220

M3 P0175ENa

Programming the P220 relays associated with the motors M1, M2 and M3: AUTOMAT. CTRL Menu: INPUTS Submenu Assignment input No.3

SET GROUP

Logic input No.3 is used to pass from one setting group to another.

P220/EN AP/B43 Page 36/40

5.

Technical Guide Application Guide MiCOM P220

BIBLIOGRAPHY •

Moteurs asynchrones triphasés fermés, AREVA Réseau Commercial France

•

Guide de l’ingénierie électrique, ELECTRA, Lavoisier

•

Protective relays APPLICATION GUIDE, AREVA

•

Electrotechnique Industrielle, Guy SEGUIER Francis NOTELET, Lavoisier

•

Symmetrical components for power systems engineering, J.Lewis BLACKBURN

Technical Guide Application Guide MiCOM P220

6.

P220/EN AP/B43 Page 37/40

APPENDIX A : SERVICE DUTY

P0229ENa

P220/EN AP/B43 Page 38/40

Technical Guide Application Guide MiCOM P220

P0230ENa

Technical Guide Application Guide MiCOM P220

7.

P220/EN AP/B43

APPENDIX B : INFORMATION NEEDED FOR ADJUSTMENT Maximum short-current between phases at the motor’s terminals Neutral point connection mode for the network feeding the motor Characteristics provided by the motor manufacturer - rated power - rated voltage - rated current - start-up type (direct-in-line, soft) - start-up current - direct start-up current (if soft start-up used) - start-up time - maximum repetition frequency of start-ups -- withstand time for blocked rotor (for hot & cold start) - heating curve - time-constants of: heating , start-up, cooling-down - transient characteristic curve at unbalance allowable permanent unbalance - motor service use (driven equipment: compressor, breaker, pump, ventilator...) - open-circuit current (for “loss of load” protection Ratios for measured-value converters (CT, PT and balance-core CT) connected to the protection Assignment output contacts of the protection relay

Page 39/40

P220/EN AP/B43

Technical Guide Application Guide MiCOM P220

Page 40/40

BLANK PAGE

Technical Guide

P220/EN FT/B43

MiCOM P220

User Guide

Technical Guide User Guide MiCOM P220

P220/EN FT/B43 Page 1/54

CONTENTS 1.

INTRODUCTION

3

1.1

Object of this document

3

1.2

Definitions

3

2.

DESCRIPTION OF THE MiCOM P220 MOTOR PROTECTION RELAY

4

3.

THE OPERATOR INTERFACE

6

3.1

Description of the front panel

6

3.2

The LEDs

7

3.3

The keypad

8

3.3.1 3.3.2 3.4

ALARM keys Programming keypad Liquid crystal display screen

8 8 8

4.

THE MENUS

9

4.1

Default display

10

4.2

Access to the menus

11

4.3

Access to the setting parameters

11

4.3.1 4.3.2 4.4

Protection by password Entering the password / modification of the parameters The OP. PARAMETERS menu

11 11 13

4.5

The CONFIGURATION menu

13

4.5.1 4.5.2 4.5.3 4.6

The CONFIG. SELECT submenu The CT RATIO submenu The LED 5, LED 6, LED 7 and LED 8 submenus The MEASUREMENTS menu

13 16 16 17

4.7

The PROCESS menu

18

4.8

The TRIP STATISTICS menu

19

4.9

The COMMUNICATION menu

19

4.10

The PROTECTION G1 and PROTECTION G2 menus

20

4.10.1 The [49] THERMAL OVERLOAD submenu: protection against thermal overload conditions 21 4.10.2 The [50/51] SHORT-CIRCUIT submenu 25 4.10.3 The [50N/51N] EARTH FAULT submenu 26 4.10.4 The [46] UNBALANCE submenu 26 4.10.5 The [48] EXCES LONG START submenu: protection against excessively long starts 27 4.10.6 The [51LR/50S] LOCKED ROTOR submenu 28 4.10.7 The [37]LOSS OF LOAD submenu: protection against undercurrent/loss of load conditions 29

P220/EN FT/B43 Page 2/54

Technical Guide User Guide MiCOM P220

4.10.8 The [49/38] RTD submenu: temperature protection by RTD (optional) 4.10.9 The [49] THERMISTOR submenu: temperature protection by thermistor (optional) 4.11 The AUTOMAT. CTRL menu

30 31 32

4.11.1 4.11.2 4.11.3 4.11.4 4.11.5 4.11.6 4.11.7 4.11.8 4.11.9 4.11.10 4.11.11 4.12

The [66] START NUMBER submenu : limitation of the number of starts per period The MIN TIME BETW 2 START submenu: minimum time between two starts The REACCEL AUTHORIZ submenu: Reacceleration authorization Binary inputs and outputs – Logical gates The AND LOGIC EQUAT submenu: AND programmable logic gates The AND LOGIC EQUAT T DELAY: AND logic gate time delay The AUX OUTPUT RLY submenu : auxiliary programmable output relays LATCH OUTPUT RELAYS submenu The TRIP OUTPUT RLY submenu: Configuration of the trip output relay The LATCH TRIP ORDER submenu : Latching of the output relays The SW SUPERVISION submenu: The RECORD menu

32 34 36 39 43 44 45 45 46 46 47 48

4.12.1 4.12.2 4.12.3 4.13

The FAULT RECORD submenu The DISTURBANCE RECORD submenu The SW MONITORING submenu ALARM messages

48 49 50 51

4.13.1 The MOTOR ALARM messages 4.13.2 The HARDWARE ALARM messages

51 51

5.

AUXILIARY FUNCTIONS

53

5.1

Event records

53

5.2

Recording of the form of the starting current

53

6.

PC CONNECTION D’UN PC – LOCAL COMMUNICATIONS

54

6.1

Connection configuration

54

6.2

Configuration of the relay and PC

54

Technical Guide User Guide MiCOM P220

P220/EN FT/B43 Page 3/54

1.

INTRODUCTION

1.1

Object of this document The purpose of this document is to present the characteristics of the P220 motor protection relay and to guide the operator through the setting procedures. After an overview of the product, this manual explains the functions performed by this protection relay and how they must be used. The menu associated with each of these functions is presented and explained.

1.2

Definitions Tripping This operation consists of a command to open the breaking device (circuit breaker or fuse contactor) connected to the motor. A tripping command can be given: •

either on detection of a fault by the MiCOM P220 relay,

•

or by the operator (in this case it is an external tripping command).

Alarm The detection of a fault by the MiCOM P220 relay leads to the display of an alarm message. Acknowledgement of an alarm This operation consists of making an alarm message disappear. Function in service / out of service The MiCOM P220 relay offers a certain number of protection, monitoring and control functions. The operator can select from these functions the ones he wishes to use: •

he must bring into service the functions he chooses to use,

•

he can take out of service the functions he does not wish to use.

Activated / deactivated function Not all the protection functions of the P220 relay are activated at the same time. They are alternately activated / deactivated automatically by the P220 relay itself to ensure that the motor has protection specific to its various operating conditions: underload or overload conditions, starting phase, locked rotor condition, and motor shut down. NOTE:

A function cannot be activated or deactivated unless the operator has previously brought it into service.

P220/EN FT/B43 Page 4/54

2.

Technical Guide User Guide MiCOM P220

DESCRIPTION OF THE MiCOM P220 MOTOR PROTECTION RELAY The MiCOM P220 relay uses digital techniques to fulfil the functions of protection, control and monitoring of motors. It is equipped with 4 analogue inputs (3 phase current inputs and 1 earth current input). The current inputs have dual ratings of 1 or 5 amperes (it is possible to combine an earth current rating of 1 A and a phase current rating of 5 A). It is possible to program the output relays to respond to any of the protection or control functions available. The different logic inputs can also be allocated to control functions. The auxiliary power supply is provided by a direct current or alternating current auxiliary source via an internal converter. Satisfactory operation of the P220 relay is guaranteed during brief interruptions of the auxiliary power supply lasting less than 50 ms. The front panel gives the operator access to the data of the MiCOM P220 relay either via LEDs or via the display unit and the keypad. The various alarms are stored in the memory and made available to the operator on the backlit display device. These alarms can be read and acknowledged directly without a password. All the parameters and measurements are accessible without a password. The setting values can only be modified after entering the password stored in the memory. The MiCOM P220 relay records and measures a large number of data with very great accuracy. It continuously measures the phase and earth currents taking into account the true RMS values up to the 10th harmonic for a 50 Hz motor and the 8th harmonic for a 60 Hz motor. The MiCOM P220 relay has on the rear connector a RS485 type link with a choice of MODBUS™, RTU mode, Courier or IEC 60870-5-103 communication protocols. This enables the operator to read the data stored by the relay (measurements, alarms, parameters), or modify the different settings and allocations of outputs of each relay, or transmit remote orders. It is also possible to reassemble or modify these data via the RS232 communication located on the front panel by using the MiCOM S1 support software. The MiCOM P220 relay can be connected directly via this link to a digital monitoring and control system (for example: MiCOM S10, SCADA). All the data available are then at the disposal of the supervisor and can be utilised either locally or remotely. The MiCOM P220 relay can be withdrawn while it is live. This means that its live parts can be withdrawn from the metal housing while the relay is supplied with power via the auxiliary source. When the relay is drawn out of its housing: −

the current circuits from the phase and earth CTs are not interrupted thanks to the presence of internal short-circuiting devices located at the current inputs (metal housing part),

−

no tripping order is generated,

−

the watchdog relay drops out,

−

the RS485 link is not interrupted. However, communication is no longer possible for the relay which is drawn out.

Technical Guide User Guide MiCOM P220

P220/EN FT/B43 Page 5/54

REMOTE COMMUNICATION parameterisation, measurements, control MMI LCD display device 8 LEDs for indication 7 pushbuttons RS232 port

MOTOR

PROTECTION + measurements, automatic controls, monitoring, disturbance recording

CONTRACTOR/ CIRCUIT BREAKER Status (closed, open) tripping/closing commande

ELECTRICAL POWER SYSTEM phase currents earth current

MCC MOTOR CONTROL P0190ENa

FIGURE 1 - ENVIRONMENT OF THE MiCOM P220 RELAY

P220/EN FT/B43

Technical Guide User Guide MiCOM P220

Page 6/54

3.

THE OPERATOR INTERFACE

3.1

Description of the front panel The front panel of the MiCOM P220 relay serves as an interface between the human and the protection relay. It enables the operator to enter settings, to gain access to the display of measured values and alarms, and also to display in a simple manner the different actions performed by the MiCOM P220 relay.

FIGURE 2 - FRONT PANEL OF THE MiCOM P220 RELAY

The front panel of the relay has three separate parts: −

The display device and keypad,

−

The LEDs,

−

The two zones under the upper and lower flaps

The display device on the front of the MiCOM P220 relay is equipped with a liquid crystal display (LCD). This screen displays data such as settings and measured values, even under difficult conditions, thanks to the backlighting of the data. The keypad has 7 touch-sensitive keys. The two keys located under the screen are dedicated to alarms; the other 5 keys are for reading the measurements and modifying the parameters of the MiCOM P220 relay. The LEDs are located on the left side of the front panel. The first four LEDs are dedicated to the operation of the relay (tripping LED, alarm LED, equipment fault LED, and auxiliary power supply LED). The following four LEDs are programmable by the operator. The wording associated with the LEDs appears by default in English on the front panel but the operator has self-adhesive labels supplied with the P220 relay on which he can write the titles of his choice using a ball-point pen.

Technical Guide User Guide MiCOM P220

P220/EN FT/B43 Page 7/54

Under the upper flap, there is a label identifying the relay by its model number and serial number. This information defines the product uniquely and specifically. When requesting any information from the factory, do not forget to indicate these two numbers. The auxiliary power supply range of the relay is also indicated on the lower part of the label. Under the lower flap, the RS232 link permits the connection of a portable PC to the MiCOM P220 relay. The live part can be withdrawn from the housing by opening the two flaps and applying traction to the two notches located behind these flaps. ATTENTION :

3.2

IT IS NECESSARY- AFTER PIVOTING THE EXTRACTOR - TO WAIT 2 OR 3 SECONDS BEFORE MAKING COME OUT THE ACTIVE PART, TO LEAVE DISCHARGING THE CAPACITORS IN THE ACTIVE PART THUS AVOIDING POSSIBLE ELECTRIC ARCS IN THE EVENT OF DIRECT CONTACT OF THE CONNECTOR BLOCKS WITH METAL LIMP.

The LEDs The LEDs are numbered from 1 to 8 starting from the top. NOTE: LED 1

The LEDs are turned off when the auxiliary power supply is lost. When the power supply is back the state of the LEDs is restored. Colour: RED

Wording: TRIP

The LED indicates that the relay has transmitted a tripping order to the breaking device (fuse-contactor / circuit breaker). This LED copies the tripping command sent to logic output No. 1 (tripping relay). Its normal state is extinguished. It lights up as soon as a tripping command is issued. It is extinguished when the associated alarm is acknowledged (disappearance of the fault and acknowledgement by the operator). LED 2

Colour: YELLOW

Wording: ALARM

This LED indicates that a motor alarm has been taken into account by the MiCOM P220 relay. The management of the ALARM LED is directly linked to the status of the motor alarms in the memory (MOTOR ALARM menu). If one or more messages are not read and not acknowledged, the ALARM LED flashes. If all messages are read but not acknowledged, the ALARM LED shows a steady light. If all messages have been read and acknowledged, the ALARM LED is extinguished. LED 3

Colour: YELLOW

Wording: WARNING

This LED indicates equipment faults of the MiCOM P220 relay. The management of the WARNING LED is directly linked to the status of the equipment alarms in the memory (HARDW ALARMS menu). When a minor internal alarm (minor equipment fault, typically a communication failure) is detected, the WARNING LED flashes. When the fault is classed as serious, (major equipment failure) the WARNING LED is lit. The WARNING LED can only be extinguished when the cause which produced the alarm has disappeared (repair of the module, disappearance of the fault).

P220/EN FT/B43

Technical Guide User Guide MiCOM P220

Page 8/54 LED 4

Colour: GREEN

Wording: HEALTHY

This LED indicates that the MiCOM P220 relay is energised within the rated range (0.8 to 1.2 Vaux). LEDs 5 to 8:

Colour: RED

These LEDs can be programmed by the operator in the CONFIGURATION menu. 3.3

The keypad The keypad has seven keys arranged in two groups: The two keys located immediately below the screen (keys ! and "), The five keys positioned in the centre of the front panel for programming.

3.3.1

ALARM keys The two keys ! and " are dedicated to reading and acknowledgement of the alarms respectively. To display the successive alarms, press the ! key. The alarms are arranged in the order in which they were detected (the most recent last, the oldest first). To acknowledge the alarms, the operator can either acknowledge each alarm by pressing the " key, or go to the end of the MOTOR ALARMS menu and perform a general acknowledgement.

3.3.2

Programming keypad The five keys situated in the centre of the front panel of the MiCOM P220 relay are dedicated to programming The keys # $ % and & make it possible to move in the direction indicated in the different levels of the menus. The ' key permits the confirmation of a choice or a value (modification of parameters).

3.4

Liquid crystal display screen The liquid crystal display screen has two lines each with sixteen characters. The screen lights up as soon as a key on the keypad is activated. It remains lit up for 5 minutes after a key on the keypad was last used. The screen has backlighting which makes it easy to read, regardless of the ambient lighting conditions.

Technical Guide User Guide MiCOM P220

4.

P220/EN FT/B43 Page 9/54

THE MENUS The menu of the P220 relay is organised into main menus, some of which are subdivided into submenus. The operator dialogue of the MiCOM P220 relay is divided into 10 menus ( menu column)

HEADING

SUB MENU

OP PARAMETERS

DESCRIPTION Data for general settings of MiCOM P220

CONFIGURATION CONFIG. SELECT

Change of Group, default display setings, Start detection criterion, Analogical Output (4-20mA), RTD and Thermistors.

TC RATIO

Settings of the CT Ratio

LED

LED 5 to LED 8

CONFIGURATION INPUTS

Configuration of Programmables LEDs Configuration of logic inputs

MEASUREMENT

Measured (Ia, Ib, Ic …) and calculated parameters (Idirect, I inverse), Max values.

PROCESS

Measurements related to the application: Thermal Overload, Time before thermal tripping, RTD Temperature, Permit start number, time before start, Emergency start number…

TRIP STATISTICS

Number of different type of tripping

COMMUNICATION

Settings of the protocol parameters.

PROTECTION G1

Configuration of the protection functions [49] THERMAL OVERLOAD

Submenu of thermal overload function

[50/51] SHORT CIRCUIT

Submenu of short circuit function

[50N/51N] EARTH FAULT

Submenu of earth Fault function

[46] UNBALANCE

Submenu of Unbalance function

[48] EXCESS LONG START

Submenu of excess long start function

[51LR-50S] BLOCKED Submenu of Blocked rotor function ROTOR [37] LOSS OF LOAD

Submenu of Loss of load function

[49/38] RTD SENSORS Submenu of RTD sensors function option [49] THERMISTORS option

Submenu of Thermistors function

P220/EN FT/B43

Technical Guide User Guide MiCOM P220

Page 10/54 HEADING

SUB MENU

Protection G2

DESCRIPTION Like PORTECTION G1

AUTOMATIC CTRL [66] START NUMBER

HOT and COLD start numbers

MIN TIME BETW 2 START

Configuration of the minimum time between two consecutive starts.

REACCEL AUTORIZATION

Autorization of reacceleration after a dip voltage detection

INPUTS

Configuration of logic inputs.

AND LOGIC EQUATION

Configuration of 4 Logic Equations

AND LOGIC EQUAT T Configuration of time delays associated to the DELAY logic equations. AUX OUTPUT RELAYS Configuration of Auxiliary output relays ( other than tripping relay RL1) LATCH OUTPUT RELAYS

Latching of the auxiliary output relays

TRIP OUTPUT RELAY

Configuration of the trip output relay ( RL1)

LATCH TRIP ORDER

Latching of the tripping output relay (RL1)

SW SUPERVISION

configuration of operating time, operation number, sum of interrupted current, closing and tripping time

FAULT RECORD

Visualization of last five faults

DISTURBANCE RECORD

Configuration of disturbance records

SW MONITORING

Data related to real functioning of the switching devise (CB)

RECORD

From the default display, access is gained to these different menus by using the # and & keys. To return to the default display from any one of the menus, press the $ key. 4.1

Default display By default, a value is continuously displayed, and the operator can select this value from a list in the CONFIG. SELECT submenu. As soon as an alarm is generated by the MiCOM P220 relay, the relay indicates it by an alarm message: this display takes priority and replaces the default value (see the ALARMS menus).

Technical Guide User Guide MiCOM P220 4.2

P220/EN FT/B43 Page 11/54

Access to the menus Access is gained to the different menus via the # and $ keys. It is possible to read all the parameters and measurements without the password. The parameters can only be modified after entering the password.

4.3

Access to the setting parameters Access to the setting parameters of the MiCOM P220 relay is possible in different ways:

4.3.1

−

either locally: by using the keys or the RS232 port on the front panel,

−

or remotely: via the RS485 port at the rear.

Protection by password Modification of the relay parameters via the pushbuttons on the front panel is protected by password. This protection applies to the relay configuration settings, particularly the selection of the different thresholds, time delays, communication parameters, allocation of the binary inputs, logic gates and output relays. The password consists of four alphanumerical characters in capitals. On leaving the factory, the password is AAAA. The operator can define his own combination of characters. If the password is lost or forgotten, modification of the parameters stored in the memory of the relay is inhibited. All that is required then is to contact AREVA T&D or its agent, stating the serial number of the relay, to receive an emergency password specific to the relay concerned.

4.3.2

Entering the password / modification of the parameters To modify a parameter, first press the ' key to go into updating mode (or parameterisation mode). The operator is asked to enter the password as soon as a parameter is modified in any of the menus or submenus. So when the operator presses the ' key, to make an adjustment, and the password is not active, the following display appears on the screen: PASSWORD ? AAAA The password consists of the letters between A and Z. The password is entered letter by letter by using the $ and # keys to move forwards and backwards in the alphabet. After each letter, press the & key to enter the next letter. At the end of the input press the ' key to confirm the password. If the password is correct the message PASSWORD OK appears on the screen. After 2 seconds, the display returns to the previous point in the menu. Press the ' key again. A cursor appears on the first field of the data to be updated: Example: modification of the current threshold I >> ([50/51] SHORT-CIRCUIT submenu)

P220/EN FT/B43

Technical Guide User Guide MiCOM P220

Page 12/54 I >> =

1.0 In

A flashing cursor indicates that the operator can change the value in the cell. To scroll through the possible values for a cell, use the # and $ keys. After each value, press the & key to enter the next digit. At the end of the input, press the ' key to confirm the modification. While the relay is in setting mode, the letter P (Parameter) is displayed at the bottom right of the menus and submenus headers. For instance, the letter P is displayed in the [50/51] SHORT-CIRCUIT submenu header: [50/51] SHORT-CIRCUIT

P

If no action is taken on the keypad for 5 minutes, the password is deactivated and the letter P disappears. Any subsequent modification of parameters will give rise to a further request for the password. NOTE:

–

–

– –

The parameterisation mode only allows modification of the relay configuration via the interface through which is was activated: if for example the password was entered by the keys on the front panel, only modifications carried out using these keys will be accepted. When the parameterisation mode is activated by entering the password via the front panel (pushbuttons), as long as this mode of parameterisation remains active, it is no longer possible to modify the relay parameters via the RS485 or RS232 communication ports. The parameters of the P220 relay can only be modified by using the pushbuttons. Once the parameterisation mode is deactivated (no action on any pushbutton for 5 minutes), it is then possible to modify the parameters of the P220 relay by using one of the communication ports. Pressing the " key during modification makes it possible to return to the value before modification. To modify the active password, gain access to the OP. PARAMETERS menu then to the PASSWORD point in the menu.

Technical Guide User Guide MiCOM P220 4.4

P220/EN FT/B43 Page 13/54

The OP. PARAMETERS menu In this menu, the operator has access to the following information: −

the type of MiCOM relay, here it is the model P220

−

the software version of the relay

−

the Active Group

−

the state of all the logic inputs

−

the state of the programmable output relays

In this menu, the operator can also:

4.5

−

modify the password

−

give the relay/motor feeder a reference (4 characters, letters or figures)

−

indicate the rated frequency of the motor (50 or 60 Hz)

−

modify the date and time.

The CONFIGURATION menu The CONFIGURATION menu makes it possible to configure the MiCOM P220 relay. This menu is divided into 7 submenus:

4.5.1

−

CONFIG. SELECT

−

CT RATIO

−

LED 5

−

LED 6

−

LED 7

−

LED 8

−

CONFIGURATION INPUTS

The CONFIG. SELECT submenu

4.5.1.1 Change of Active Setting group The MiCOM P220 relay has two configuration groups corresponding to two protection groups (menus PROTECTION G1 and PROTECTION G2). The operator can thus carry out 2 settings for each parameter: one for configuration group 1 and the other for configuration group 2. This menu allows the selection between the 2 groups. The active group by default is group 1.

P220/EN FT/B43

Technical Guide User Guide MiCOM P220

Page 14/54 The changeover of the configuration can be ordered by: a)

a local command:

−

via a logic input which must have been previously configured by the operator,

−

via the keys on the front panel

−

via the RS232 port on the front panel. NOTE:

For the changeover via a logic input, it is necessary to Know that:

When the user selects the option “LEVEL”, in the CONFIGURATION/CONFIG SELECT submenu, the changeover of the groups is ONLY authorized by a logic input, (no possibility to change the active group neither by communication, nor by the front panel). ACTIVE GROUP CHANGEOVER WITH “LEVEL” OPTION : When switching ON the auxiliary supply, the selected group corresponds to the logic input state. This means: A - LEVEL option and Logic input configuration = 0 Groupe 1 = logic Input is not active Groupe 2 = logic Input is active If the programmed logic input is supplied with +V, then the active group will be G1. If the programmed logic input is not supplied with +V , then the active group will be G2. B - LEVEL option and Logic input configuration = 1 Groupe 1 = logic Input is not active Groupe 2 = logic Input is active If the programmed logic input is supplied with +V, then the active group will be G2. If the programmed logic input is not supplied with +V, then the active group will be G1. If the user wishes to change the groups by the communication or by the front panel, he has to select the option “ EDGE”. ACTIVE GROUP CHANGEOVER WITH “EDGE” OPTION : A- FRONT option with Logic input configuration = 1 The active group changes every time the voltage applied to the logic input changes state from 0V to +V. Switch OFF the relay, then if we 1.

Switch ON the power supply of the relay with the voltage applied to the logic input =0V: The group will not change. It will remain as before the switching off of the relay.

2.

Switch ON the power supply of the relay with the voltage applied to the logic input =+V: The group will change and it will change after every switching off.

Technical Guide User Guide MiCOM P220

P220/EN FT/B43 Page 15/54

B- FRONT option with Logic input configuration = 0 The active group changes every time the voltage applied to the logic input changes state from +V to 0V. Switch OFF the relay, then if we 1.

Switch ON the power supply of the relay with the voltage applied to the logic input =0V: The group will change state and it will change after every switching off.

2.

Switch ON the power supply of the relay with the voltage applied to the logic input =+V: The group will not change. It will remain as before the switching off of the relay. NOTE :

b)

It is important to set properly the change active group with FRONT option via a logic input. In general the customer should be conform to the cases A-1 and B-2, so no group changes will take place upon energizing the relay.

a remote command via the RS485 port at the rear. NOTE:

LEVEL could be high or low level EDGE could be riding or falling edge The list of access methods above is given in the order of priority: for example the configuration changeover order given by a logic input takes priority over the one given by the keys on the front panel.

4.5.1.2 Selection of a default value to be display The operator can select the measured value permanently displayed on the LCD screen from the following list: −

one of the 3 phase currents IA RMS, IB RMS, IC RMS,

−

the neutral current IN RMS,

−

the thermal state of the motor TH. STATE,

−

the current value consumed by the motor as a percentage of the thermal current threshold value Iθ >: %ILoad.

4.5.1.3 Criterion for detecting a start The MiCOM P220 relay offers the choice of start detection criteria as follows: −

closure of the contactor / circuit breaker: criterion listed as 52A,

−

closure of the contactor / circuit breaker and overshoot of the starting current threshold Istart ([48] EXCES. LONG START submenu). These two events must appear within an interval of time of approximately 90 ms for the detection of a start to be accepted. This criterion is known as 52A + I.

This facility makes it possible to adapt the configuration of the P220 relay to the type of starting used: direct on_line or soft start. NOTE:

The P220 relay detects the information "contactor / circuit breaker position" via logic input No. 1 (paragraph 4.11.4.1. "Fixed" inputs). The connection of this logic input to the status of the breaking device is obligatory.

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Page 16/54 4.5.1.4 Analogue output (optional)

The MiCOM P220 relay offers an optional analogue output to make the data available to a logic controller, at 0-20 mA or 4-20 mA as desired. The current loop support can be used as an active source circuit or a passive source circuit. The measured value which can be transmitted by this analogue output is selected from the following list: −

one of the 3 phase currents IA RMS, IB RMS, IC RMS,

−

the neutral current IN RMS,

−

the thermal state of the motor TH. STATE,

−

the current consumed by the motor as a percentage of the thermal current threshold value Iθ >: % Ioad,

−

the waiting time before another start is permitted: T bef Start,

−

the time before a thermal trip occurs: T bef Trip,

−

one of the temperatures measured by the RTD (optional): T°C RTD1, T°C RTD2, T°C RTD3, T°C RTD4, T°C RTD5, T°C RTD6.

The table of correspondence of the analogue output is given in the chapter 5-3. 4.5.1.5 Type of RTD temperature probes or thermistors (optional) The P220 relay offers optional monitoring of 6 RTD temperature probes or 2 thermistors + 4 RTD temperature probes to provide protection against temperature rises in the stator and mechanical bearings of the motor (PROTECTION menu). The type of RTD (PT100, Ni100, Ni120, Cu10), or the type of thermistor (PTC/NTC) is selected in the CONFIG. SELECT submenu. The table of correspondences between the temperature and resistance of the RTD is defined in the chapter 5-3. 4.5.2

The CT RATIO submenu In the CT RATIO submenu, the operator sets the primary and secondary ratings of the Phase and Earth CTs. NOTE:

4.5.3

Where the earth current input is connected to a CT summation of the 3 phase current circuits (residual connection, no core CT), the primary and secondary values of "Earth CT" must be set to the same values of those of the "Phase CTs".

The LED 5, LED 6, LED 7 and LED 8 submenus Four identical submenus LED 5, LED 6, LED 7 and LED 8 permit configuration of the 4 programmable LEDs of the MiCOM P220 relay. These data can originate inside the relay (protection, automatic control, or internal logic state function) or outside the relay (logic input). −

One LED is lit if at least one of the pieces of information associated with it is valid (logic OR). It is extinguished: − either after acknowledgement of the of associated data item or items − or on the disappearance of the data item or items which gave rise to it.

Technical Guide User Guide MiCOM P220 −

P220/EN FT/B43 Page 17/54

The "EMERG. RESTART" information is activated: − either following reception of an emergency start command via the logic input programmed on "EMERG. RESTART". It stays lit up as log as the associated logic input is excited − or following an emergency start remote order sent via the communication network. It will be extinguished when the "SUCCESSFUL START" information appears.

−

The "FORBIDDEN START" information is active if at least one of the three pieces of data inhibiting starts is active: − either thermal inhibition of starting "θ FORBID. START" − or inhibition due to limitation of the number of starts " START NB LIMIT " − or inhibition due to a minimum time between 2 starts "T betw 2 start".

−

The motor shut down information "MOTOR STOPPED" is activated when logic input No. 1 (terminals 22-24) is not excited. It remains active until logic input No. 1 is excited.

−

The motor running information "MOTOR RUNNING" is activated when logic input No. 1 (terminals 22-24) is excited. It remains active until logic input No. 1 is de energized.

−

The successful start information "SUCCESSFUL START" is activated after a motor start phase if at the end of the time delay t Istart the following criteria are respected: − the locked rotor at start information ""LOCKED ROTOR" is not present − the excessively long start information "EXCES NG START" is not present.

− 4.6

This information stays active until the motor shuts down (deenergisation of logic input No. 1).

The MEASUREMENTS menu −

The measurements of the phase currents and the earth current are expressed as true root-mean-square values. For a 50 Hz motor, the harmonics are taken into account up to the 10th order; for a 60 Hz motor the harmonics are taken into account up to the 8th order.

−

The measurement of the symmetrical components is taken from the fundamental component of the current. The positive and negative sequence components of the current are calculated on the basis of the three phase currents, and the zero phase sequence component is calculated from the earth current input. The following formulae are used to calculate the symmetrical components: Ipositive = 1/ 3 ⋅ (I A + a ⋅ IB + a² ⋅ IC ) Inegative = 1/ 3 ⋅ (I A + a² ⋅ IB + a ⋅ IC ) I zero phase sequence = 1/ 3 ⋅ Iearth

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Page 18/54

4.7

−

The frequency measurement is given if the amplitude of at least one of the three phase currents is greater than 10 % of In (In is the rating of the phase current inputs, 1 A or 5 A defined in the CT RATIO submenu, on the line "SEC PHASE ="). Where the frequency cannot be calculated, the relays displays "****".

−

The phase current maximeter retains the greatest current value of one of the three phases outside the motor starting phase. This variable is expressed as a true RMS value.

The PROCESS menu A set of measurements relating to operation displayed in the PROCESS menu makes it possible to monitor the utilisation and state of the motor. −

The estimate of the time before a thermal trip “T before TH TRIP” is given under the following conditions: − the thermal alarm threshold θ ALARM is reached − the equivalent thermal current Ieq is greater than the thermal current threshold Iθ > − considering the constant motor overload rate Ieq / Iθ >.

When the above conditions are not respected, the P220 relay displays the value “****”. −

The number of authorised starts of the motor “PERMIT START NB” takes into account all the criteria for limiting or inhibiting starting, that is, the functions: − "limitation of the number of starts", − "minimum time between 2 starts", − "thermal criterion for inhibiting a start".

When there is no limit to the number of authorised starts, the relay displays the value “****”. −

The indication of the time before a further start is authorised “T before START" is given when an inhibition on starting is in progress. This indication takes into account all the criteria for limiting or inhibiting starting, that is, the functions: − "limitation of the number of starts", − "minimum time between 2 starts", − "thermal criterion for inhibiting a start".

−

The counter for the number of starts of the motor is incremented at each start. In contrast, authorisation for the motor to re-accelerate does not increment this counter.

−

The counter for the number of motor operation hours is the sum of hours during which the motor is running. NOTE:

After confirming the password, the user can reset the value of the THERMAL STATE value to zero by pressing the " key.

Technical Guide User Guide MiCOM P220 4.8

P220/EN FT/B43 Page 19/54

The TRIP STATISTICS menu In the TRIP STATISTICS menu the following are displayed: −

the total number of tripping operations,

−

the number of tripping operations per type of fault.

Tripping can have two possible causes: −

tripping on a fault: when the P220 relay detects a fault (exceeding a threshold), it generates a tripping order;

−

deliberate tripping: the operator can order tripping from three access points: − a logic input, − the RS232 port on the front panel, − the communications network via the RS485 rear port. NOTE:

4.9

– The tripping orders stored in the memory of the MiCOM P220 protection relay for the statistics are only those transmitted to the tripping relay (logic output No. 1). This relay is one of the logic outputs of the MiCOM P220. It is configured in the TRIP OUTPUT RLY submenu. – Motor shutdowns for which the command was not relayed via the output relay No. 1 of the MiCOM P220 are not taken into account in the TRIP STATISTICS menu.

The COMMUNICATION menu −

The MiCOM P220 relay can communicate under the MODBUS, Courier or IEC 60870-5 protocols via the RS485 port located at the rear. These protocols are based on the master-slave principle. The P220 relay can therefore be integrated, as a slave, in a digital monitoring and control system. In this system, the supervisor (master), for example a PC, can:

−

read and modify the setting values,

−

remote the measurements, alarm data, changes of state (changes of state of inputs/outputs, changes of setting group), values relating to fault recordings, disturbance recording and the form of the starting current,

−

issue remote orders such as commands to open or close the circuit breaker/contactor (motor On / Off), to trig disturbance recording or to acknowledge the relay remotely.

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Technical Guide User Guide MiCOM P220

The PROTECTION G1 and PROTECTION G2 menus The menus PROTECTION G1 and PROTECTION G2 are identical and enable the operator to program 2 different configuration groups (CONFIGURATION menu). Each of these 2 menus is divided into 8 submenus corresponding to the different protection functions: −

[49] THERMAL OVERLOAD

−

[50/51] SHORT-CIRCUIT

−

[50N/51N] EARTH FAULT

−

[46] UNBALANCE

−

[48] EXCES. LONG START

−

[51LR/50S] LOCKED ROTOR

−

[37] LOSS OF LOAD

−

[49/38] RTD SENSORS or [49] THERMISTOR (optional)

The operator can bring each of these protections into service or take them out of service in the submenus of the menu PROTECTION G1 or PROTECTION G2. The setting parameters of the functions taken out of service do not appear on the LCD unit and are not accessible via the communication If the threshold or thresholds of these functions are reached, a time delay with a duration preset by the operator is started. When this time delay expires, if the fault is still present, an instantaneously signal is generated and can be used to excite one of the output relays. All the algorithms of the protection functions are based on the fundamental component of the current.

Technical Guide User Guide MiCOM P220

P220/EN FT/B43 Page 21/54 STATE OF THE PROTECTION FUNCTIONS (ACTIVE/INACTIVE) ACCORDING TO THE OPERATION MODE OF THE MOTOR

The MiCOM P220 protection functions are automatically* activated or deactivated by the relay itself according to the motor's operation mode (motor halted, start-up sequence, re-acceleration phase or normal running condition). The table below indicates under which conditions these protection functions are active or inactive. Protective functions

Motor halted

Start-up sequence

Motor running

Re-acceleration phase

Thermal image

Activated (Tr)**

Activated (Te2)**

Activated (Te1)**

Activated (Te2)**

Short-circuit

Activated

Activated

Activated

Activated

Excessive long start Deactivated

Activated

Deactivated

Activated

Locked rotor at start Deactivated

Activated

Deactivated

Deactivated

Stalled rotor whilst running

Deactivated

Deactivated

Activated

Deactivated

Unbalance

Activated

Activated

Activated

Activated

Earth fault

Activated

Activated

Activated

Activated

Loss of load

Deactivated

Activated***

Activated***

Activated***

Over temperature

Activated

Activated

Activated

Activated

* These protection functions are activated by the relay only if they have previously been commissioned by the user. ** The time constant used in the thermal model depends on the value of the motor load current and on the motor's operating mode. The time constant indicated in brackets is the one used by the relay. *** The "loss of load" function is activated upon expiry of the Tinhib timer. This timer is user settable, it is initiated by the relay when a motor start is detected. 4.10.1 The [49] THERMAL OVERLOAD submenu: protection against thermal overload conditions The MiCOM P220 relay produces a thermal image of the motor from the positive and negative components of the current consumed by the motor, in such a way as to take into account the thermal effects created in the stator and in the rotor. The negative component currents consumed in the stator generate in the rotor large amplitude currents which create a substantial temperature rise in the rotor winding. The composition carried out by the MiCOM P220 results in an equivalent thermal current Ieq, the image of the temperature rise caused by the current in the motor. The current Ieq is calculated according to the following formula: Ieq = (Ipositive ² + Ke ⋅ Inegative ²)0.5

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Starting from this equivalent thermal current, the thermal state of the motor θ is calculated every cycle by the MiCOM P220 relay according to the following formula: θi+1= (Ieq/Iθ>)² . [1- e(-t/T)] + θi . e(-t/T) in which: − Ke is the negative sequence current recognition factor (adjustable). − Iθ > is the thermal overload current threshold. − θi is the value of the thermal state calculated previously. − Τ is the time constant of the motor. As a function of the operating conditions of the motor, the relay uses one of the following 3 thermal time constants: •

the thermal time constant Τe1 which is applied when the equivalent thermal current Ieq lies between 0 and 2 ⋅ Iθ >, that is when the motor is running (load or overload conditions);

•

the starting time constant Τe2 which is applied when the equivalent thermal current Ieq is greater than 2 ⋅ Iθ >, that is when the motor is in the starting phase or locked rotor condition;

•

the cooling time constant Τr which is applied when the motor is shut down (logic input L1 in the zero logic state - terminals 22-24). In this case, the motor no longer consumes current and the value of the thermal state θ therefore decreases as time passes according to the formula: θi+1= θi . e(-t/Tr)

A thermal overload signal “THERM.OV” is generated when the value of the thermal state θ reaches 100 %. NOTE:

– On interruption of the auxiliary power supply to the P220 relay, the value of the thermal state θ is stored in the nonvolatile memory. On reenergisation of the relay, the value of the thermal state θ is reset to its value before the interruption if it was lower than 90 %. In the opposite case (greater than 90 %), it is reset to 90 %, to avoid premature tripping of the relay P220 when the auxiliary voltage returns. – The thermal state θ of the motor is displayed in the PROCESS menu. – On the second line of the PROCESS menu, after having entered the password, it is possible to reset the value of the thermal state θ of the motor to zero. – Even if the "thermal overload" protection function is not used, the thermal current threshold Iθ > must be set so that it is possible to use the excessively long start “EXCES LONG START” and stalled rotor while motor is running “STALLED ROTOR” protection functions. – Examples of the thermal overload curve are shown in chapter 5-3.

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P220/EN FT/B43 Page 23/54

4.10.1.1 Function inhibiting thermal tripping during a start: θ INHIBIT This function permits inhibition of the thermal tripping information THERM. OV. during the starting phase. It may be necessary to use this function for some motors with temperature rise characteristics in a starting phase very different from those in a locked rotor condition. If the user brings this function into service, this inhibition is activated as soon as the starting time delay tIstart begins (cf. submenu [48] EXCES. LONG START). On expiry of tIstart (end of the time allowed for starting), this inhibition is deactivated. When this function is activated, that is during the motor starting phase, the value of the thermal state θ calculated cannot exceed 90 %. This means that thermal tripping cannot take place under any circumstances. At the end of the time allowed for starting, the value of the thermal state is authorised to exceed 90 %. NOTE:

– This function has no influence on the thermal alarm signal “θ ALARM” and thermal inhibition of starting function “θ FORBID. START”. – When this function is brought into service, the motor is still thermally protected by the monitoring of the starting time.

4.10.1.2 Function of the thermal image influenced by ambient temperature (optional): INFLUENCE RTD When the ambient temperature exceeds + 40 °C, the admissible motor current diminishes in relation to its rated current. A setting of the protection parameters which is suitable under normal temperature conditions is no longer suitable when the ambient temperature rises above + 40 °C. The MiCOM P220 relay offers the possibility of taking into account this necessary derating of motors. The thermal image can be modified by the ambient temperature measurement. When this function is brought into service by the user, if the ambient temperature rises above + 40 °C, the value of the thermal threshold Iθ > is automatically modified to adapt the motor protection to the external temperature conditions. The rule for the ambient temperature measurement influencing the thermal image is: −

For an ambient temperature lower than or equal to + 40 °C, the thermal image is not modified.

−

For an ambient temperature between + 40 °C and + 65 °C, the thermal threshold Iθ > is modified by a multiplying coefficient in compliance with the following formula: Multiplying coefficient = 1 - (ambient temperature in °C - 40) / 100

−

For a temperature greater than or equal to + 65 °C, the thermal threshold Iθ > is modified by a multiplying coefficient of 0.75.

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The table below gives the relationship between the ambient temperature measurement and the influence on the thermal image: Ambient temperature (in °Celsius) Correction coefficient for the thermal threshold Iθ >

+40 °C +45 °C +50 °C +55 °C +60 °C +65 °C

1.00

0.95

0.90

0.85

0.80

0.75

(multiplying coefficient) NOTE:

ATTENTION :

– This function can only be used if the relay has the option "6 RTD monitoring". – The probe used for this function is RTD 1 (terminals 2c-4c-6c). To use this function, a probe measuring the ambient temperature of the place where the motor is located must be connected to terminals 2c-4c-6c. – The operator can program the temperature thresholds of RTD 1 ([49/38] RTD submenu) even if he has brought this INFLUENCE RTD function into service.

FOR 2 THERMISTORS + 4 RTD OPTION, THIS FUNCTION WILL BE PROVIDED BY THE RTD CONNECTED TO TERMINALS 8C-10C-12C.

4.10.1.3 Thermal alarm function: θ ALARM The purpose of this function is to produce an alarm signal indicating that the thermal state θ of the motor has exceeded an adjustable threshold: θ ALARM. Corrective action can thus be taken before thermal tripping occurs. Once the threshold θ ALARM is exceeded, the MiCOM P220 relay calculates and displays, in the PROCESS menu (cf. chapter 4.7 The PROCESS menu), an estimate of the time remaining before a thermal trip THERM. OV. occurs. This estimate is given for a constant overload rate. 4.10.1.4 Thermal start inhibition function: θ FORBID. START This function makes it possible to inhibit a start on a hot motor, or not, as a function of its thermal state. When this function has been adjusted in service by the user, a further start is inhibited for the motor as long as its thermal state θ is higher than an adjustable threshold θ FORBID START. It is then necessary to wait until the motor cools down. When the value of the thermal state θ falls below the threshold θ FORBID START, the starting of the motor is authorised. The information inhibiting starting on a thermal criterion FORBID START is activated if the following two conditions are fulfilled: −

Motor shut down: logic input L1 in the zero state (terminals 22-24).

−

Thermal state value θ higher than the threshold θ FORBID START.

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P220/EN FT/B43 Page 25/54

The following diagram illustrates the operation of the thermal start inhibit criterion: Shutdown of the motor

Thermal state θ of the motor

Restarting of the motor

FORBID START threshold

Time Binary input L1 : interlock o/o (52A)

θ FORBID START signal

P0191ENa

4.10.2 The [50/51] SHORT-CIRCUIT submenu The [50/51] SHORT-CIRCUIT function which protects the motor against short-circuits between phases uses a definite time phase overcurrent protection. In this menu a short-circuit current threshold I >> and its associated time delay tI >> are adjustable. The P220 relay generates a signal if the phase current exceeds the threshold I >> for a length of time greater than tI >>. In addition to this time-delayed threshold, an instantaneous information (threshold I >> without time delay) is available. IA IB IC

>=1

I>>

tI>>

0

Internal logic signals P0192ENa

NOTE:

– The time delay tI >> can be set to instantaneous. – When the operator has adjusted the SHORT-CIRCUIT [50/51] function in service, this function is always active whatever the mode of operation of the motor (motor running, shut down, starting phase, locked rotor condition). – In the event of saturation of the phase CTs, the MiCOM P220 will detect a short-circuit under the following conditions: – Fault current lower than 200 times the limit current value for saturation of the CTs. – No remanent flux in the CTs at the time of establishing the fault. – No direct current component at the time of establishing the fault. – Short-circuit threshold I >> set below 0.9, the limit current value for saturation of the CTs.

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Page 26/54 4.10.3 The [50N/51N] EARTH FAULT submenu

The [50N/51N] EARTH FAULT function which protects the motor against faults between one or more phases and earth uses a definite time zero phase sequence overcurrent protection. Earth faults create a zero phase sequence current measured either by 3 phase CTs in a residual connection, or directly by a core balanced CT surrounding the 3 conductors. Two independent earth current thresholds (Io > and Io >>) with their associated time delays (tIo > and tIo >>) enable the operator to configure for example an alarm threshold and a tripping threshold. The settings of the thresholds are expressed as a function of the residual current (3 times the zero phase sequence component). For each earth current threshold, time-delayed information and instantaneous information is available. tIo>

Io>

0

3 Io tIo>>

Io>>

Internal logic signals

0

P0193ENa

4.10.4 The [46] UNBALANCE submenu The [46] UNBALANCE function, which protects the motor against unbalance conditions, broken conductor and phase inversions, is based on the measurement of the negative sequence component of the current. Two negative sequence overcurrent thresholds are available: −

one of them, Ii >, is associated with a definite time delay,

−

the other, Ii >>, is associated with a inverse time characteristic.

The user can use the threshold Ii > to detect the inversion or loss of a phase, or to give an unbalance alarm. The threshold Ii >> has an inverse time characteristic which enables it to allow slight instantaneous unbalances to pass whilst more substantial unbalances will be detected more quickly. This inverse time characteristic permits selective clearance of external two-phase faults which appear on the system. This operating characteristic in compliance with the withstand of the motors is given in the appendix. Ii> IA IB IC

t Ii>

0

Internal logic signals

Inegative Ii>>

P0194ENa

Technical Guide User Guide MiCOM P220

P220/EN FT/B43 Page 27/54

4.10.5 The [48] EXCES LONG START submenu: protection against excessively long starts The [48] EXCES LONG START function protects the motor if the starting phase lasts too long. To do this, it uses a starting current threshold Istart> and a starting time delay tIstart. This threshold and this time delay can be adjusted to allow the starting current to pass. This function is activated (time delay tIstart initiated) as soon as the MiCOM P220 relay detects a start (the criterion for detection of a start is selected in the CONFIGURATION menu). It is deactivated on expiry of the starting current time delay tIstart. If, on expiry of the time delay tIstart, the current consumed by the motor has not fallen below the threshold Istart> again, a prolonged start signal “LONG START t Istart” will be generated. IA IB IC

>=1 Motor start-up detection

Istart > tI start

0

& >=1

Successful start signal

Internal logic signals

& Re-acceleration authorisation

tI start

0

P0195ENa

Information indicating a "successful start" is generated on expiry of the time delay tIstart if no tripping order has been given. NOTE:

During normal operation of the motor, the excessively long start function “EXCES LONG START” can be reactivated during a flying restart of the motor (re-acceleration of the motor following a voltage dip), that is when re-acceleration is authorised (AUTOMAT. CTRL menu).

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Page 28/54 4.10.6 The [51LR/50S] LOCKED ROTOR submenu 4.10.6.1 Rotor stalled whilst the motor running

This function, which makes it possible to detect stalling while the motor is running, is activated immediately after the starting period, that is on expiry of the starting time delay tIstart (submenu [48] EXCES LONG START). Two parameters can be set: the stalled rotor current threshold Istall with its associated time delay tIstall, the stalled rotor time. The MiCOM P220 relay detects the overcurrent caused by stalling and generates information that the rotor has stalled while the motor is running if the phase current exceeds the threshold Istall for a length of time greater than tIstall. IA IB IC

>=1

Istall>

&

Successful start signal

tI stall

0

Reacceleration in progress

Motor starting criterion : 52A+I

>=1

&

tI stall

Internal logic signals

0

Motor startup non detected Motor shutdown ( EL1 = 0 )

P0196ENa

NOTE:

– During authorisation of re-acceleration (AUTOMAT. CTRL menu), this function is deactivated during the time delay allowed for starting tIstart. – On starting the motor, when the start detection criterion selected is "closure of the contactor / circuit breaker and exceeding of the starting current threshold Istart (52 A + I)", if the relay sees only one of these events, (closure of the breaking device or the appearance of a current greater than Istart), then the function of monitoring a stalled rotor whilst the motor is running is activated.

Technical Guide User Guide MiCOM P220

P220/EN FT/B43 Page 29/54

4.10.6.2 Locked rotor at start This function, which makes it possible to detect that the motor is locked at the start, is activated only during the starting phase, that is during the course of the starting time delay tIstart. It uses speed signal from the motor received by logic input No. 2 of the P220 relay (terminals 26-28), and the time delay tIstall: locked rotor time (a speed switch device must be connected to this logic input: paragraph 4.11.4.1. "Fixed" inputs). On detection of a start, the "locked rotor at start" function is activated: the time delay tIstall begins. At the end of this time delay, the motor speed logic input (input No. 2) must be in logic state 1 to indicate that the motor speed is not zero. The opposite case (zero speed) means that the rotor is locked, so the P220 relay generates a locked rotor at start order LOCKED ROTOR. Motor start-up detection

t Istall

0

&

Internal logic signals

Speed switch open (EL2 = 0)

NOTE:

P0197ENa

– The speed switch device sends information to the P220 relay indicating, by the closing of a contact, that the rotor is rotating. – The time delay tIstall is common to the protection functions for "rotor stalled while motor is running" and "rotor locked at start". – If the motor is not fitted with a speed switch device, this function cannot be used and must therefore be deactivated.

4.10.7 The [37]LOSS OF LOAD submenu: protection against undercurrent/loss of load conditions The [37] UNDERCURRENT function which makes it possible to detect a loss of load (for example the draining of a pump or breakage of a conveyor belt), uses definite time undercurrent protection. The user sets the following parameters: −

undercurrent threshold I <

−

time delay tI < associated with the undercurrent threshold

−

the inhibit start time delay Tinhib.

This function is deactivated when the motor is shut down (logic input No. 1 in the 0 state) and also during the inhibit time delay Tinhib. When the P220 relay detects that the motor is starting, this function is activated at the end of the inhibit time delay Tinhib. The time delay Tinhib is useful for motors with no-load starting which take on load gradually at the end of starting. When the motor is running (and after expiry of the inhibit time delay Tinhib), if the value of one of the phase currents consumed by the motor is lower than the threshold I < for a period greater than or equal to tI =1

I<

& Motor start-up detection

tI<

0

tinhib

Internal logic signals

Motor shutdown ( EL1 = 0 )

P0198ENa

4.10.8 The [49/38] RTD submenu: temperature protection by RTD (optional) The [49/38] RTD SENSORS [49/38] function is temperature rises of the motor by direct temperature monitoring 6 RTDs (Remote Temperature Detectors). the following types: PT100, Ni120, Ni100 or CONFIGURATION menu).

intended to detect abnormal monitoring. This is achieved by The RTDs can be selected from Cu10 (types selected in the

For each RTD, the user sets: −

an alarm threshold RTD # ALARM,

−

a time delay associated with the alarm threshold t RTD# ALARM,

−

a tripping threshold RTD # TRIP,

−

a time delay associated with the tripping threshold t RTD TRIP #.

An alarm signal is generated if the temperature measured exceeds the programmed alarm threshold for a period of time equal to the time delay associated with this threshold. A tripping signal is generated if the temperature measured exceeds the programmed tripping threshold for a period of time equal to the time delay associated with this threshold. The P220 relay continuously monitors the satisfactory operation of the RTD's. An alarm will be generated if: −

a RTD wiring circuit is opening

−

a RTD is short-circuited.

On detection of a RTD failure, a “ RTD/Therm ERROR ” alarm message is generated and the over temperature thresholds corresponding to this RTD will be deactivated. The RTD can be located: −

at the stator windings (protection of the stator, indirect protection of the rotor, detection of failure of the cooling system),

−

at the mechanical bearings (to detect failure of the lubrication),

−

outside the motor (ambient temperature measurement), at the same level as that of the entry of cooling air.

Technical Guide User Guide MiCOM P220

P220/EN FT/B43 Page 31/54 NOTE:

– The symbol # corresponds to the number of the RTD. – The RTDs monitored must obligatorily be all of the same type (all of type PT100, or Ni100, or Ni120, or Cu10). – It is possible to connect only the RTDs that one wishes to monitor. – RTD 1 can be used to measure the ambient temperature and thus influence the thermal image (see § 4.10.1.2).

4.10.9 The [49] THERMISTOR submenu: temperature protection by thermistor (optional) This submenu provides the monitoring of 2 thermistors + 4 RTD sensors. The [49] THERMISTOR function, like the preceding one, detects abnormal temperature rises. It operates with thermistors of type PTC or NTC (selected in the CONFIGURATION menu). The P220 relay can monitor 2 thermistors. Each thermistor input is linked to an independent threshold (Thermist#) with a fixed time delay of 2 seconds. For each thermistor, the user sets a threshold in ohms. A "Thermist#" order is generated if the thermistor resistance measured exceeds this threshold for a length of time greater than or equal to 2 seconds. NOTE:

– The symbol # corresponds to the number of the thermistor.

P220/EN FT/B43 Page 32/54 4.11

Technical Guide User Guide MiCOM P220

The AUTOMAT. CTRL menu The AUTOMAT. CTRL menu comprises the following 10 submenus: •

[66] START NUMBER

•

MIN TIME BETW 2 START

•

RE-ACCEL AUTHORIZ

•

INPUTS

•

AND LOGIC EQUATION

•

AND LOGIC T EQUA DELAY

•

AUX OUTPUT RLY

•

LATCH OUTPUT RELAYS

•

TRIP OUTPUT RLY

•

LATCH TRIP ORDER

•

SW SUPERVISION

4.11.1 The [66] START NUMBER submenu : limitation of the number of starts per period The [66] NB DEM function allows the number of motor start-ups over a given period to be limited. In effect, starting the motor too frequently can be too constraining for the motor (over-heating), for its starting system (starting impedance, electrolytic bath,...) or can in some cases reveal an anomaly in the process operation, The [66] NB DEM function uses the following adjustable parameters. −

a monitoring period Treference

−

a number of hot starts limit HOT START NB

−

a number of cold starts limit COLD START NB

−

a start inhibit time delay Tinterdiction.

Each time an motor start is detected, the Treference time delay is initiated and the number of starts registered by the counter corresponding to the temperature of the motor (hot or cold) is incremented by one. At the end of this time delay, the counter in question will be decremented by one. Each time the motor is stopped (change of state of logic input No. 1: from state 1 to state 0) relay P220 establishes whether either of the two counters has been reached. If so, start inhibit signal START NB LIMIT will be generated for a length of time equal to Tinterdiction. At the end of Tinterdiction, this signal drops out, and it is possible to start the motor again. Examples: Taking as an example cold starts where the limit of the number of cold starts has been set at 3 for a period of Treference.

Technical Guide User Guide MiCOM P220

P220/EN FT/B43 Page 33/54

Case n°1: The number of cold starts limit has been reached and the motor is stopped before the end of the Treference period: the Tinterdiction time delay is therefore initiated when the motor stops. A new start up is permitted at the end of the Tinterdiction time delay.

Istart

IN

2 more starts permitted

1 more start permitted

No start permitted

motor

t

T reference T reference T reference T inter diction START NB LIMIT

P0199ENa

Case n°2: The number of cold starts limit is reached but the motor is not stopped until after the end of the Treference period: therefore the Tinterdiction time delay is not initiated. There is no start inhibit.

Istart

IN

2 more starts permitted

1 more start permitted

No start permitted

1 more start permitted

motor

t

T reference

T reference T reference

START NB LIMIT (logic state at 0) P0200ENa

P220/EN FT/B43

Technical Guide User Guide MiCOM P220

Page 34/54 Case n°3:

Particular cases where at the end of the Tinterdiction time delay, the number of starts counter is still reached (the Tinterdiction time delay period is completed before the end of Treference): any new start up is inhibited until the end of the Treference period (the START NB LIMIT signal is extended).

Istart

IN

2 more start permitted

1 more start permitted

No start permitted

motor

t

T reference T reference T reference T interdiction

START NB LIMIT

P0201ENa

NOTE:

– A start is considered cold if the value of the motor’s thermal state is less or equal to 50% when an motor start phase is detected. – A start is considered warm if the value of the motor’s thermal state is more than 50% when an motor start phase is detected. – In cases where at the end of the Tinterdiction time delay period, one of the counters is still reached, the START NB LIMIT start inhibit signal will not drop out until the counter in question is decremented (example case No.3). – The number of authorised starts and the waiting time before a new start is authorised are available in the PROCESS menu (see section 4.7. The PROCESS menu).

4.11.2 The MIN TIME BETW 2 START submenu: minimum time between two starts Excessive motor or starting system heating caused by two consecutive starts can be avoided by means of the MINI TIME BETW 2 START function. It is based on the use of an adjustable time delay: minimum time between 2 starts “ T betw 2 start ”. This time delay is initiated on detection of an motor start up by the P220 relay. When the motor stops, if the “ T betw 2 start ” time delay has not finished, start inhibit signal “ Tbetw 2 start ” is generated until the end of the “ Tbetw 2 start ” time delay.

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P220/EN FT/B43 Page 35/54

Examples Case n°1:

Case n°2:

The stopping of the motor takes place before the end of the “ Tbetw 2 start ” time delay period. A start inhibit signal “Tbetw 2 start ” is generated during the “ Tbetw 2 start ” period.

The stopping of the motor takes place after the end of the “ Tbetw 2 start ” time delay period, no start inhibit signal is generated.

Istart

Istart

IN motor

IN motor

t

t

T betw 2 start

T betw 2 start

T betw 2 start T betw 2 start (logic state at 0) P0202ENa

P0203ENa

P220/EN FT/B43 Page 36/54

Technical Guide User Guide MiCOM P220

4.11.3 The REACCEL AUTHORIZ submenu: Reacceleration authorization A fall in voltage from the electrical network causes a reduction in rotor speed. When the voltage is restored, the rotor starts on a re-acceleration phase in order to regain its nominal speed. This re-acceleration manifests itself as a intake of current of approximately the same value as that of the locked rotor current, its duration being relative to the magnitude of the fall in voltage. The MiCOM P220 can be informed of the fall in voltage from the mains. A programmable logic input of the relay (input VOLT. DIP - the submenu INPUTS, see section 4.11.4.2. The submenu INPUTS: programmable inputs) receives a binary siganl indicating that there is a reduction in voltage from the mains. By comparing how long this voltage reduction lasts with an adjustable time delay Treacc, the relay will authorise or prevent the motor’s re-acceleration. The user adjusts a time delay Treacc. This time delay corresponds to the maximum duration of a voltage sag for which the motor re-acceleration is to be authorised. On receipt of binary signalling a voltage sag, the MiCOM P220 relay initiates the Treacc time delay. Two circumstances are possible: •

If the duration of the voltage sag is less than the time delay Treacc and if in the 5 seconds following the end of the voltage sag the current absorbed by the motor exceeds the lstall> threshold ([51LR/50S] BLOCK ROTOR function), then: − The P220 goes into monitoring of a start phase (initiation of the tIstart time delay, EXCES LONG START function) and it deactivates the “ stalled rotor whilst running ” function. − At the end of the tIstart delay allowed for a start, the relay P220 reactivates the “ stalled rotor whilst running ” function.

•

If the duration of the voltage sag is more than the Treacc time delay, the P220 relay does not modify its operation. When the motor tries to reaccelerate, an tripping order will be generated by the “ stalled rotor whilst running ” function if the current absorbed by the motor exceeds the Istall> threshold for a length of time exceeding tlstall.

Technical Guide User Guide MiCOM P220

P220/EN FT/B43 Page 37/54

Examples Case n°1: The duration of the drop in voltage is less than the Treacc time delay, when the mains voltage is restored, re-acceleration of the motor is authorised. Voltage sag Network/mains voltage

Current absorbed by the motor

Istall > threshold Motor reacceleration

T reacc

Fixed window of 5 s

" Drop in voltage " signal (binary input)

t Istart Reacceleration authorization

" stalled rotor whilst running " function active " stalled rotor whilst running " function deactivated P0204ENa

P220/EN FT/B43

Technical Guide User Guide MiCOM P220

Page 38/54 Case n°2:

The duration of the voltage drop is greater than the Treacc time delay, reacceleration of the motor is not authorised. When the current absorbed exceeds the current threshold Istall> (non authorised re-acceleration attempt), the “ stalled rotor whilst running ” function starts up in order to give an instruction to stop the motor. Voltage sag Network/mains voltage

Current absorbed by the motor

Istall > threshold Motor reacceleration

T reacc "Drop in voltage" signal (binary input)

t Istall

No reacceleration authorisation (logic state 0) Instruction to stop the motor given by the "stalled rotor whilst running" function

P0205ENa

NOTE:

A drop in voltage is only taken into account if it lasts for at least 100 ms.

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P220/EN FT/B43 Page 39/54

4.11.4 Binary inputs and outputs – Logical gates Thanks to its programmable scheme logic, inputs and outputs, the MiCOM P220 relay allows control and logic diagrams to be realised. The P220 relay has: −

5 logic inputs of which 3 are programmable

−

6 logic outputs of which 5 are programmable

−

4 AND logic gates

In order to realise the control and logic diagrams, two types of data are taken into account by the relay: •

internal type data: − logic state of protection function (instantaneous, time delayed signals) − logic state of an logic or state function (start inhibit, successful start)

•

external type data: − data received via its logic inputs − data received via the communication network (remote control by the supervisor).

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Below, a logic diagram shows the different possibilities offered by the MiCOM P220 relay:

&

toperation

treset

toperation

treset

PROTECTION functions

& External and internal logic signals

AUTOMAT. CTRL EXT 1 Logic input EXT 2 Logic input EXT 3 Logic input EXT 4 Logic input

t

o

t

o

t

o

t

o

s

& &

toperation

treset

toperation

treset

Output relays allocation: RL1 RL2 RL3 RL4 RL5

Internal logic signals Remote communication P0206ENa

4.11.4.1 “ Fixed ” inputs Two of the P220’s logic inputs are predefined for a fixed use, these are: •

Logic input No 1 (terminals 22 - 24) is linked to the position of the fuse-contactor or circuit breaker (52a). This input should be linked to the 52a interlock of the cut off device (the 52a interlock is open when the cut off device is open, it is closed when the cut off device is closed). The connection of this logic input is compulsory.

•

The logic input No. 2 (terminals 26-28) is linked to motor speed binary data. This logic input links up to a speed sensor usually known as a “ speed switch ”. The “ speed switch ” should be open when the rotor is not turning and should close as soon as it detects rotor rotation. The connecting of this logic input to a “ speed switch device ” is necessary in order to be able to use the “ locked rotor at start ” protection function. NOTE:

When the logic input No. 2 is not linked to a “ speed switch ”, this logic input has no assignment.

Technical Guide User Guide MiCOM P220

P220/EN FT/B43 Page 41/54

4.11.4.2 The INPUTS submenu: programmable inputs The user can program three of the P220’s logic inputs. These are logic input No. 3 (terminals 13-15), No 4 (terminals 17-19) and No 5 (terminals 21-23). The user chooses the allocation of these logic inputs in the INPUTS menu. NOTE:

Except for the "None" allocation, any other function can be allocated to only one logic input.

Options of allocated information of logic inputs

Label

Operation mode of logic input

EMERGENCY START

EMERG ST

LEVEL

SWITCHING BETWEEN CONFIGURATIONS

SET GROUP

LEVEL/ EDGE

DISTURBANCE TRIGGERING

DIST TRIG

EDGE

EXTERNAL ACKNOWLEDGEMENT

EXT RESET

LEVEL

RE ACCELERATION AUTHORIZATION

VOLT DIP

LEVEL

AUXILIARY 1 and 2

EXT 1 and EXT 2

LEVEL

AUXILIARY 3 and 4

EXT 3 and EXT 4

LEVEL

No Assignement

NONE

EMERGENCY START An emergency start may be necessary for safety reasons. When the logic input having been assigned to the “ EMERG ST ” function is powered on (logic state is active), the P220 relay reacts as follows: −

The thermal state value θ is muzzled at 90% so that no thermal trip order “ THERM. OV. ” can occur during the motor start up phase (see section 4.10.1.1. Function inhibiting thermal tripping during a start: θ INHIBIT). At the end of the tIstart time delay allocated to the start up, the thermal condition value θ will be allowed to exceed 90%.

−

The thermal start inhibit signal “ θ FORBID START ” is suppressed.

−

The start inhibit “ START NB LIMIT ” signal from the “ limitation of number of starts ” function is suppressed.

−

The “ T betw 2 start ” start inhibit signal from the “ minimum time between 2 starts ” function is suppressed.

The motor can therefore be restarted and no thermal tripping can take place during the start up phase. NOTE:

– The logic input “ EMERG ST ” must be kept powered during the whole of the motor start up phase. – The relay P220 can also receive a remote emergency start command via the communication network. – An emergency start up instruction “ EMERG ST ” does not order the closure of the cut off device (motor start up) but makes the motor start up possible.

P220/EN FT/B43 Page 42/54

Technical Guide User Guide MiCOM P220

SWITCHING BETWEEN CONFIGURATIONS (PASSAGE FROM ONE SETTING GROUP TO ANOTHER) The P220 relay has two configurations (2 setting groups). The switching from one configuration to another can be achieved using one programmed logic input on “ SET GROUP ”. When you allocate the information “SET GROUP” to a logic input, it is possible to configure the operation of this logic input on LEVEL or on EDGE (minimum duration of 15ms). The change from one configuration to another can also be achieved via the operator menu or the communication network (see section 4.5.1.1. Configuration Group). A parameter setting group change is not possible if one of the following protection functions is in progress (that is to say if the current threshold of these functions is exceeded): −

[50/51] SHORT CIRCUIT function

−

[50N/51N] EARTH FAULT function

−

[46] UNBALANCE function

−

[48] EXCES LONG START function

−

[50S/51LR] BLOCK ROTOR function

−

[37] LOSS OF LOAD function

−

[49/38] RTD (optional)

−

[49] THERMISTOR

TRIGGING OF THE DISTURBANCE RECORDING By assigning the command “ DIST TRIG ” to a programmable logic input, the operator will be able to initiate the disturbance recordings (RECORD menu) from this input. The energising (rising front) of this programmed logic input on “ DIST TRIG ” will trigger a disturbance recording. EXTERNAL ACKNOWLEDGEMENT By dedicating a logic input to the external acknowledgement command “ EXT RESET ”, the operator can acknowledge the alarms and unlatch the output relays if the latter were kept energised (see section 4.11.10. The LATCH TRIP ORDER submenu), by energising this logic input. RE-ACCELERATION AUTHORISATION The voltage drop data “ VOLT. DIP ” can be assigned to one of the inputs to enable relay P220 to take voltage drops into account in order to authorise re-accelerations if necessary (refer to chapter REACCEL AUTHORIZ submenu). AUXILIARY 1 AND AUXILIARY 2 DATA The “ EXT1 ” and “ EXT2 ” assignments allow relay P220 to acquire two lots of external binary data. A time delay (t EXT 1 and t EXT 2 respectively) is linked to each assignment. The internal “ EXT1 ” signal to the relay is in logic state 1 if the associated logic input is energised for a time longer or equal to t EXT 1 time delay. When the logic input is no longer energised, the logic state of the internal ” EXT1 ” signal drops back to 0.

Technical Guide User Guide MiCOM P220

P220/EN FT/B43 Page 43/54

The internal “ EXT2 ” signal to the relay is in logic state 1 if the associated logic input is energised for a time longer or equal to t EXT 2 time delay. When the logic input is no longer energised, the logic state of the internal ” EXT2 ” signal drops back to 0. When the t EXT 1 and t EXT 2 timers expire, the following happen: −

an alarm message is sent

−

the Alarm LED is lit

−

an event is recorded.

AUXILIARY 3 AND AUXILIARY 4 DATA The “ EXT3 ” and “ EXT4 ” assignments operate similarly to “ EXT1 ” and “ EXT2 ”, but when the associated timers expire, there is no alarm message and the Alarm LED is not lit. The only result is an event record. NO ASSIGNMENT When a logic input is programmed on “ NONE ” (None) it becomes inactive. Whether this logic input is switched on or not, relay P220 takes no account of it. 4.11.5 The AND LOGIC EQUAT submenu: AND programmable logic gates The AND LOGIC EQUAT function allows the operator to programme 4 “ AND ” logic equations, known respectively as A, B, C and D. Each equation can be the logic “ AND ” of one, two or several items of internal logic signals (protection or automatism functions) or external data (state of logic inputs “ EXT 1 ”, “ EXT2 ”, “ EXT 3 ” and “ EXT4 ”) to the relay P220. In this menu, the user constructs each of the 4 logic equations by creating logic “ AND ” gate between several items of data. Data is assigned to a logic equation by positioning the corresponding digit to 1. When the digit is set at 0, the data is not assigned to the corresponding logic equation. Examples: You want to create 2 “ AND ” logic equations. For the first equation, you wish to implement the “ AND ” logic of the following data: −

time delayed earth fault 1st element (tlo>)

−

successful start (SUCCESS START)

−

logic state of one of the binary inputs(EXT1)

tIo>

SUCCESS START EXT 1

& P0207ENa

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Page 44/54

For the second logic equation, you wish to implement le logic “ AND ” of the following data: −

unbalance fault 1st element (tli>)

−

logic state of one of the binary inputs (EXT1)

tIi>

EXT 1

& P0208ENa

Programming in the AND LOGIC EQUAT menu is carried out as follows. In this example, the first equation will be the A equation and the second B: t I0>

DCBA 0001

t Ii>

DCBA 0010

EXT1

DCBA 0011

SUCCESS START

DCBA 0001

Allocation of the “ t lo> ” data to equation A.

Allocation of the “ t li> ” data to equation B.

Allocation of the “ EXT1 ” data to logic equations A and B.

Allocation of the “ SUCCESS START ” data to equation A.

4.11.6 The AND LOGIC EQUAT T DELAY: AND logic gate time delay 2 time delays can be linked to each of the 4 programmable logic equations: one operation time delay and one reset time delay. These 8 independent time delays (4 logic equations, 2 time delays per equation) are configurable in the AND LOGIC EQUAT T DELAY submenu. The operation time delay (Toperat) is initiated only if all the associated data in a logic equation are valid (AND gate). It allows the logic equation validation to be delayed for a time Toperat. The reset time delay (Treset) is initiated as soon as any of the data associated with the equation disappears. This allows the equation to remain valid after an item of data has disappeared for a length of time Treset.

Technical Guide User Guide MiCOM P220

P220/EN FT/B43 Page 45/54

Example: Logic equation C obtained from the combination (AND logic) of three lots of data 1, 2 and 3 with the Toperat and Treset time delays.

1 2 3 Equation C

T operat

T reset

P0209ENa

4.11.7 The AUX OUTPUT RLY submenu : auxiliary programmable output relays In this menu the user assigns the MiCOM P220 internal or external data to the auxiliary output relays (relays No2, No3, No4 and No5). These are changeover type relays (1 common, 1 normally open contact, 1 normally close contact). One relay is switched on when at least one of the data items linked to it is valid (OR logic). It drops back once all its associated data has disappeared. −

Data assignable to the auxiliary output relays can be: −

−

of the internal type −

logic state of a protection function (instantaneous, time delayed signals)

−

logic state of an automatism or state function (start inhibit, successful start)

−

the result of an “ AND ” logic equation

of the external type −

signal received via logic inputs (“ EXT1 ”, “ EXT2 ”, “ EXT3 ” and “ EXT4 ”)

−

signal received via the communication network (remote control by the supervisor).

4.11.8 LATCH OUTPUT RELAYS submenu This submenu makes it possible to maintain closed the contacts of outputs assigned to one or more thresholds after the disappearance of the cause; this type of latching is carried out by relay and not by function.

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4.11.9 The TRIP OUTPUT RLY submenu: Configuration of the trip output relay Data which is going to control the relay No 1 (terminals 2-4-6) can be assigned using the TRIP OUTPUT RLY submenu. This changeover type relay is used to give a tripping order to the cut-off device. The relay No1 (tripping relay) has the same electrical and mechanical characteristics as the other output relays. Reminder: A certain number of the MiCOM P220 functions are based on the operation of relay No1, i.e. The Trip Cause Statistics (refer to § 4.8) The Latching of the Trip Output Relay (refer to § 4.11.10) The Surveillance of the cut-off device (refer to § 4.11.11) The display of data relating to the cut-off device (refer to § 4.12.3) The record of fault values (refer to § 4.12.1) The triggering of disturbance record (refer to § 4.12.2) 4.11.10 The LATCH TRIP ORDER submenu : Latching of the output relays In this menu, the user selects which functions are to maintain the output relays energised when an order is generated by these functions. The functions for which output relays can be latched are: −

time delayed threshold tl>> ([50/51] SHORT-CIRCUIT submenu)

−

time delayed threshold tlo>> ([50N/51N] EARTH FAULT submenu)

−

time delayed threshold tli>> ([46] UNBALANCE submenu)

−

AND logic equation A (AND LOGIC EQUAT submenu)

−

AND logic equation B (AND LOGIC EQUAT submenu)

−

AND logic equation C (AND LOGIC EQUAT submenu)

−

AND logic equation D (AND LOGIC EQUAT submenu)

Thus, when one of the above functions generates a command via one or several output relays, the corresponding relays remain energised after the disappearance of the command. It will be necessary to come and acknowledge the P220 in order to switch off the output relay(s). NOTE:

– Latching of the output relays is optional for each of these functions. The user can chose whether to assign these functions to the “ output relay latching facility ”. – There are three possible ways to acknowledge the P220, and thus switch off the output relays in the event of latching: - press the " button - send an acknowledge order to the configured logic input on “ EXT RESET ” - send a acknowledge remote order via the communication network (order given by a supervisor) – On loss of auxiliary power, the output relays drop back. On return of auxiliary power, the output relays are re-energised, independently of the fault status (still present or cleared).

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P220/EN FT/B43 Page 47/54

4.11.11 The SW SUPERVISION submenu: The P220 relay monitors the operation of the cut-off device (fuse-contactor or circuit breaker). Three criteria are monitored and for each of these an adjustable alarm threshold is available to the user. These thresholds are based on: −

Monitoring of the time of opening of the cut-off device. This is the time from the moment when the P220 sends an order to the output relay No1 to the moment when the P220 relay receives the data on the logic input No. 1 (terminals 22-24) indicating that the cut-off device is open.

−

Monitoring of the number of opening orders. This is the number of tripping orders which have been given to relay No 1.

−

Monitoring of the summation of the amps to exponent “ n ” cut by the cut-off device The value of the intensity being taken into account is that of the current at the moment when the output relay No 1 receives a tripping order.

When one of the thresholds described above is exceeded, an alarm message is available on the display and logic data can be assigned by the user on one or several of the auxiliary output relays (relays No 2,3,4 or 5). So as to adapt the MiCOM P220 to any type of cut-off device, the user can also configure 2 time delays: A making time (Ttrip) for maintaining the tripping order information: For each tripping order sent on the relay No 1, this one is maintained excited for (Ttrip) time (if the “ trip output relay latching ” facility were not parameterized) A marking time (Tclose) for maintaining the closing order information: A command of interlocking (closing of the switchgear) given by the communication network (remote control CLOSE ORDER) is maintained on the auxiliary output relay during a time equal to Tclose. It is about the output relay to which the CLOSE ORDER was affected (AUX OUTPUT RLY menu). NOTE:

– For the summation of the amps to exponent “ n ” cut, the exponent “ n ” can be adjusted to the value 1 or the value 2. – In all cases, the orders sent on the output relay No1 (tripping order) are maintained for at least 100 ms.

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Page 48/54 4.12

The RECORD menu The RECORD menu comprises 3 sub menus −

FAULT RECORD

−

DISTURB RECORD

−

SW MONITORING

4.12.1 The FAULT RECORD submenu A collection of data on each of the 5 last faults registered is displayed in the FAULT RECORD sub menu. For each logging, the relay memorises: −

the fault number

−

the time of the fault

−

the date of the fault

−

setting group (group G1 or G2) active at the time of the fault

−

the faulty phase

−

the function which detected the fault

−

magnitude of fault current (in fundamental value)

−

the 3 phase currents (in True RMS values)

−

the earth current (in True RMS value)

The recordings of the fault are accessible: −

either through the Human Machine Interface (display front face)

−

or using the remote communication network (RS485 rear port)

−

or using the MiCOM S1 support software (RS232 front port)

Fault number 5 is the last fault registered, fault number 1 is the oldest. NOTE:

– Data registered in the non volatile memory are available for one year without auxiliary power thanks to a backup battery housed in the front face. – These data are not erasable. They are managed in a circular list: when this is full, the oldest fault is erased. – Faults are signalled by one or several alarm messages.

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4.12.2 The DISTURBANCE RECORD submenu The MiCOM P220 relay offers the possibility of saving 5 disturbance records. The data are acquired at a frequency of 32 samples per electrical cycle, ie. 1600Hz in a 50Hz system or 1920 Hz in 60Hz system, and allows for a very faithful reconstruction of the analogue signals. For each recording, the relays memorises: −

the 3 phase currents

−

the earth current

−

the frequency

−

the state of the 5 logic inputs

−

the state of all the output relays (including the watchdog relay)

−

the date and the time

The total duration of a recording is defined by the configuration of the pre-time and post-time. The pre-time defines the duration of the recording before the disturbance recording triggering order, the post time defines the duration of the recording after the disturbance recording triggering order. In all cases, the total duration of a recording cannot exceed 3 seconds. Duration of recording : 3 seconds maximum

Pre-time

Post-time

Triggering order

P0210ENa

The triggering of a disturbance recording can be generated: −

when a logic entry programmed on “ DIST TRIG ” is excited (see section 4.11.4.2.3 Trigging of the disturbance recording)

−

on receipt of a remote control from a supervisor on the communications network (RS485 rear port)

−

on receipt of a remote control from MiCOM S1 support software (RS232 front port)

−

when one of the following occurs (exclusive choice): − instantaneous over-stepping of one of the following current thresholds: l>>, lo>, lo>> (instantaneous short-circuit, instantaneous earth fault 1st threshold and instantaneous earth fault 2nd threshold data respectively) − or when output relay No 1 is excited (relay dedicated to the tripping of the cut-off device). The excitement of this relay can be due to the detection of an electrical fault or to a voluntary opening order (opening remote control on the communication network, external order relayed by one of the logic inputs).

P220/EN FT/B43

Technical Guide User Guide MiCOM P220

Page 50/54 The disturbance recordings can be retrieved: −

either using the communication network (RS485 rear port)

−

or using the MiCOM S1 support software (RS232 front port) NOTE:

– If the configuration of the pre-time and post-time corresponds to total recording duration of more than three seconds then the post-time duration is automatically reduced so that the total recording duration is 3 seconds. – Disturbance recordings are not erasable. They are managed in a circular list: when this is full, the oldest recording is erased. – The data registered in non volatile memory are available for 1 year without auxiliary power, thanks to a back-up battery housed in the front face. – When the disturbance recordings are extracted from relay P220 using the MiCOM S1 support software, they are stored in the COMTRADE format.

4.12.3 The SW MONITORING submenu In this menu the operator with access to data relating to the cut-off device: −

Summation of the amps exponent “ n ” switched by the cut-off device for each phase.

−

Total number of operations of relay No 1

−

Opening time of the cut-off device. NOTE:

– These data are those calculated by the relay P220 whilst in the SW SUPERVISION menu the operator with access to the adjustment of the parameters to generate alarm data when a threshold is exceeded. – The way in which relay P220 calculates its data is explained in the section SW SUPERVISION (§ 4.11.11).

Technical Guide User Guide MiCOM P220 4.13

P220/EN FT/B43 Page 51/54

ALARM messages The management of the alarms is carried out directly on the front face screen. The display of alarm messages takes priority over that of the value by default (selected in CONFIG. SELECT submenu), so that as soon as an alarm is detected by the, the message is displayed on the MiCOM P220 relay screen. The alarm messages are classified into 2 categories: −

Motor alarm message

−

Relay hardware or software fault, or RTD/thermistor failure message

The display of a HARDWARE ALARM message takes priority over the display of a MOTOR ALARM message. NOTE:

Upon loss of auxiliary power supply, the alarm messages disappear. They are restored upon return of the power supply.

4.13.1 The MOTOR ALARM messages Data considered as motor alarm are displayed in the MOTOR ALARMS menu. If several alarms appear, they are written to memory in the order of their detection. They are displayed in reverse chronological order (the most recent alarm first, the oldest last). Each message is numbered and the total number of messages is indicated. Example This message indicates an earth fault (time delayed threshold tlo>>). This alarm is the 2nd out of total of 7. t I0>>

2/7

The operator can read all the alarm messages using the ! key, without needing to key in the pass word. The operator can acknowledge the alarms using the ! key. Keying in the password is not necessary. The operator can acknowledge each message one at a time, or acknowledge all the messages by going to the end of the list and acknowledging all the messages by pressing the " key. NOTE:

If an alarm has not been acknowledged, it will not be possible to view the default display programmed by the operator.

4.13.2 The HARDWARE ALARM messages The safety and availability of the MiCOM P220 relay can be improved by a cyclic autotest procedure of both hardware and software. Each time the P220 relay is switched on, auto-diagnostic tests are initiated: these tests deal with the output relays (engaging / triggering tests), the microprocessor, the memories (EEPROM checksum calculation, RAM tests) and the acquisition circuit of each analogue input.

P220/EN FT/B43

Technical Guide User Guide MiCOM P220

Page 52/54 The hardware faults are split into 2 groups: •

Minor faults: these are faults classified as non serious (communication fault, analogue output fault, 3.6V battery, RTD or thermistor failure and date indicator fault).

•

Major faults: these are serious faults (RAM fault, EEPROM data fault, EEPROM calibration fault, analogue signal acquisition fault, watchdog fault).

Any major fault recorded is immediately the subject of an alarm and provokes the activation of the WATCHDOG relay (relay No0, terminals 35-36-37), as well as the switching off of the other output relays. The acknowledged alarms are all written to memory in the order of their appearance. The display of the alarms is ensured in reverse chronological order (the most recent alarm first, the least recent last). Each message is numbered and the total number of messages is indicated in the top left hand corner of the display. The operator can read all of the alarm messages using the ! key, without any necessity to key in the pass word. The acknowledgement of the relay hardware alarm messages is IMPOSSIBLE. Only the disappearance of the cause of the alarm will provoke their acknowledgement. The display of a hardware fault (equipment fault) takes priority over the other alarms (non equipment fault). NOTE:

In the case of major hardware alarm and even when the tripping relay is configured to be latched, it drops out.

Technical Guide User Guide MiCOM P220

P220/EN FT/B43 Page 53/54

5.

AUXILIARY FUNCTIONS

5.1

Event records The MiCOM P220 relay registers 75 changes of state in non volatile memory and dates them with a precision of 1 ms. For each change of state the relay indicates the date, the time and the wording of the event. This applies to any change of state of the logic inputs / outputs, the alteration of one or several setting parameters, alarm or triggering data. Please refer to Chapter 6Communications for more information. The recordings of the consignment of states can be downloaded: •

either using the remote communication network (RS485 rear port)

•

or using the MiCOM S1 support software (RS232 front port) NOTE:

5.2

– The data are registered in non volatile memory and are available for one year without auxiliary power thanks to a back-up battery housed in the front face. – These consignments are not erasable. They are managed in a circular list: when this is full, the change of state of the oldest is erased.

Recording of the form of the starting current The MiCOM P220 relay records the form of current of the last start. In order to do this, it records at each period (every 20 ms if the frequency is at 50 Hz) the maximum value of one of the three phase currents. The values recorded are expressed in True RMS values. The recording is initiated following detection by the relay of an motor start up, it stops at the end of the tlstart time delay allocated to the start up. The file containing the recording of the form of the starting current can be repatriated on a PC: •

either using the remote communication network (RS485 rear port)

•

or using the MiCOM S1 support software (RS232 front port). The data will be stored in COMTRADE format. NOTE:

– The data are recorded in non volatile memory and are available for one year without auxiliary power, thanks to a back-up battery housed in the front face. – The maximum duration of a recording is limited to 40 seconds.

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Technical Guide User Guide MiCOM P220

Page 54/54

6.

PC CONNECTION D’UN PC – LOCAL COMMUNICATIONS

6.1

Connection configuration Configuration is indicated in the figure below:

P0220ENb

The front communication port is provided by a 9-pin female D-type connector located under the bottom hinged cover. It provides RS232 (IEC60870 compliant) serial data communication and is intended for use with a PC connected locally to the relay (up to 15m distance) as shown in the figure above. This is a pin-to-pin connection which must not be used as a permanent connection. 6.2

Configuration of the relay and PC Once the physical connection is established, the relay and PC settings must be checked in order to start the communication. The default communication settings of the RS232 port are as follows: Protocol

Modbus

Rate

19 200 bits/s

Address

Must be set in the "Communication" menu, "Address" line.

Message format

11 bit - 1 bit start, 8 bits data, 1 bit even, 1 bit stop.

Technical Guide

P220/EN HI/B43

MiCOM P220

Menu of the HMI

Technical Guide Menu of the HMI MiCOM P220

P220/EN HI/B43 Page 1/48

CONTENT 1.

THE OP PARAMETERS MENU

3

2.

CONFIGURATION MENU

5

2.1

CONFIG. SELECT submenu

5

2.2

The CT RATIO submenu

6

2.3

The LED submenus

7

2.4

CONFIGURATION INPUTS submenu

9

2.5

Date Format submenu

9

3.

THE MEASUREMENTS MENU

10

4.

THE PROCESS SUBMENU

11

5.

THE TRIP STATISTICS MENU

12

6.

THE COMMUNICATION MENU

14

7.

THE PROTECTION MENU

15

7.1

The [49] THERMAL OVERLOD submenu

15

7.2

The [50/51] SHORT-CIRCUIT submenu

16

7.3

The [50N/51N] EARTH FAULT submenu

17

7.4

The [46] UNBALANCE submenu

18

7.5

The[48] EXCES LONG START submenu

19

7.6

The [51LR/50S] BLOCK ROTOR submenu

20

7.7

The [37] LOSS OF LOAD submenu

21

7.8

The [49/38] RTD submenu

22

7.9

The [49] THERMISTOR submenu

23

8.

THE AUTOMATIC CTRL MENU

24

8.1

The [66] Start number submenu

24

8.2

The MIN TIME BETW 2 START submenu

24

8.3

The REACCEL AUTHORIZ submenu

25

8.4

The INPUTS submenu

26

8.5

The AND LOGIC EQUAT submenu

27

8.6

The AND LOGIC EQUAT T DELAY submenu

29

8.7

The AUX OUPUT RLY submenu

30

8.8

The LATCH OUTPUT RELAYS submenu

33

8.9

The TRIP OUTPUT RLY submenu

34

P220/EN HI/B43 Page 2/48

Technical Guide Menu of the HMI MiCOM P220

8.10

The LATCH TRIP ORDER submenu

36

8.11

The SW SUPERVISION submenu

37

9.

RECORD MENU

38

9.1

The FAULT RECORD submenu

38

9.2

The DISTURB RECORD submenu

39

9.3

The SW MONITORING submenu

40

10.

MENUS CONTENT

41

Technical Guide Menu of the HMI MiCOM P220

1.

P220/EN HI/B43 Page 3/48

THE OP PARAMETERS MENU Press the ! and " keys to move around in the OP PARAMETERS menu.

OP PARAMETERS

PASSWORD = ****

Modification of the password : key in the old password and confirm it. Then press the # key, key in the new password and confirm the whole input with the # key. The message NEW PASSWORD OK is displayed to indicate that the password has changed. Displays the model of MiCOM relay.

TYPE =

P220

REFERENCE = XXXX

SOFTWARE VERSION = 3.C

FREQUENCY= 50 Hz

Displays your reference code. It contains letters between A and Z. To enter it, press the # key for each letter and use the ! and " keys to move forwards and backwards in the alphabet. After each letter, press the $ key to enter the next letter. At the end of the input, press the # key to confirm your reference code. Displays the software version code.

Acquisition of the reference frequency of the electrical power system. There is a choice of: 50 Hz or 60 Hz

Displays the Active Group.

ACTIVE GROUP= 1

INPUT ST =

54321 00000

OUTPUT ST =

54321 00000

DATE

Displays the state of the binary inputs. The binary inputs are numbered from 1 to 5 starting from the right. The state of each binary input is displayed immediately below: - state 0: input inactive. - state 1 : input active Displays the state of the output relays. The output relays are numbered from 1 to 5 starting from the right. The status of each output relay is displayed immediate below: - state 0: input inactive. - state 1 : input active Selection and display of the date.

14/09/00

P220/EN HI/B43

Technical Guide Menu of the HMI MiCOM P220

Page 4/48 TIME

Selection and display of the time. 16:35:30

Technical Guide Menu of the HMI MiCOM P220

2.

P220/EN HI/B43 Page 5/48

CONFIGURATION MENU Press the ! and " keys to enter the CONFIGURATION menu

CONFIGURATION 2.1

CONFIG. SELECT submenu To move about in the CONFIG. SELECT submenu, use the ! and " keys. To go into the CT RATIO, LED 5, LED 6, LED 7 and LED 8 submenus, press the % and $ keys.

CONFIG. SELECT

CHANGE GROUP INPUT = EDGE

SETTING GROUP

1

DEFAULT DISPLAY IA RMS

START DETECTION 52A + I dem

ANALOG. OUTPUT 0 - 20 mA

DATA TYPE ANALOG IA RMS

RTD type = PT100

Thermist 1 type = PTC

Thermist 2 type =

NTC

Selection of the mode of operation of the logic inputs. Choice of: EDGE/LEVEL.

Selection and display of the configuration group. Choice of: group 1 or group 2.

Selection and display of a default value. There is a choice of: IA RMS or IB RMS or IC RMS or I0 RMS or THERM ST or % I LOAD Selection and display of the start detection criterion. Choice of: 52A or 52A +I

Selection and display of the type of analogue output: 0-20 mA or 4-20 mA (optional)

Selection and display of the value transmitted by the analogue output (optional). Choice of: IA RMS, IB RMS, IC RMS, I0 RMS, THERM ST, % I LOAD, Tbef START, Tbef TRIP (respectively time delay before start, time delay before thermal tripping) T°C RTD1, T°C RTD2, T°C RTD3, T°C RTD4, T°C RTD5, T°C RTD6. Selection and display of the type of RTD temperature probe (optional): PT100, Ni100, Ni120 or Cu10

Selection and display of the type of thermistor 1 (optional) : choice of PTC or NTC

Selection and display of the type of thermistor 2 (optional) : choice of PTC or NTC

P220/EN HI/B43

Technical Guide Menu of the HMI MiCOM P220

Page 6/48 2.2

The CT RATIO submenu Press the ! and " keys to enter the CONFIGURATION menu

CONFIGURATION

To move around in the CT RATIO submenu, press the ! and "keys. To go into the CONFIG. SELECT, LED 5, LED 6, LED 7 and LED 8, press the % and $ keys.

CT RATIO

PRIM PH = ****

SEC PH = *

PRIM E = ****

SEC E = *

Selection and display of the primary rating of the phase CT. The value is entered on 4 figures: from 1 to 3000 in steps of 1. Selection and display of the secondary rating of the phase CT. The value is to be selected between either 1 or 5. Selection and display of the primary rating of the earth CT. The value is entered on 4 figures: from 1 to 3000 in steps of 1. Selection and display of the secondary rating of the earth CT. The value is to be selected between either 1 or 5.

Technical Guide Menu of the HMI MiCOM P220 2.3

P220/EN HI/B43 Page 7/48

The LED submenus Press the ! and " keys to enter the CONFIGURATION menu.

CONFIGURATION

To move around in the LED 5 submenu, press the ! and " keys. To go to the CONFIG. SELECT, CT RATIO, LED 6, LED 7 and LED 8 submenus, press the % and $ keys.

LED 5

THERM OVERLOAD ? YES

θ ALARM ?

NO

t I >> ? NO

t Io > ? NO

t Io >> ?

NO

t Ii > ? NO

t Ii >> ? NO

t I< ?

EXCES LONG START ?

NO

NO

t Istall ? NO

To link LED 5 with the "thermal overload" function so that it lights up if the thermal overload function operates, press #, select YES by using the ! and " keys, then press # again to confirm This links LED 5 to the thermal alarm threshold θALARM.

This links LED 5 to the time delayed threshold tI>> (protection against short-circuits).

This links LED 5 to the time delayed threshold tIo> (protection against Earth faults)

This links LED 5 to the time delayed threshold tIo>> (protection against Earth faults)

This links LED 5 to the time delayed threshold tIi > (protection against unbalances).

This links LED 5 to the time delayed threshold tIi >> (protection against unbalances)

This links LED 5 to the time delayed threshold t I< (protection against undercurrent / losses of load).

This links LED 5 to the time delayed threshold tIstart (protection against excessively long starts).

This links LED 5 to the time delayed threshold t Istall (protection against rotor stalling when the motor is running)

P220/EN HI/B43

Technical Guide Menu of the HMI MiCOM P220

Page 8/48 LOCKED ROTOR ?

NO

This links LED 5 to the function "rotor locked on starting"

This links LED 5 to the "emergency restart" information.

EMERG RESTART ? NO

FORBIDDEN START ? NO

t RTD 1, 2, 3 ALARM ? NO

t RTD 1, 2, 3 TRIP ? NO

t RTD 4, 5, 6 ALARM ? NO

t RTD 4, 5, 6 TRIP ?

NO

Thermist 1, 2? NO

This links LED 5 to the "forbidden start" information

This links LED 5 to the time delayed thresholds tRTD1 ALARM, tRTD2 ALARM and tRTD3 ALARM (temperature protection: optional) This links LED 5 to the time delayed thresholds tRTD1 TRIP, tRTD2 TRIP and tRTD3 TRIP (temperature protection: optional) This links LED 5 to the time delayed thresholds tRTD4 ALARM, tRTD5 ALARM and tRTD6 ALARM (temperature protection: optional) This links LED 5 to the time delayed thresholds tRTD4 TRIP, tRTD5 TRIP and tRTD6 TRIP (temperature protection: optional) This links LED 5 to the time delayed thresholds Thermist 1 and Thermist 2 (temperature protection: optional) … ditto for thermistor 2 (optional) This links LED 5 to the auxiliary time delay tEXT1

EXT 1 ? NO

EXT 2 ?

This links LED 5 to the auxiliary time delay tEXT2 NO

MOTOR STOPPED ? NO

MOTOR RUNNING ? NO

This links LED 5 to the indication with the information "motor stopped"

This links LED 5 to the indication with the information "motor running".

Technical Guide Menu of the HMI MiCOM P220

P220/EN HI/B43 Page 9/48

SUCCESSFUL START ? 2.4

CONFIGURATION INPUTS submenu Inputs :

2.5

NO

This links LED 5 to the indication with the information "successful start"

54321 11111

Configuration of the mode of operation of logic inputs. Choice: 0 or 1.

Date Format submenu DATE FORMAT: PRIVATE NOTE:

Configuration of the Date format for synchronization. Choice: PRIVATE or IEC.

If the choosen protocol for communication is Modbus, so you will find this submenu in the "COMMUNICATION" menu.

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Technical Guide Menu of the HMI MiCOM P220

Page 10/48

3.

THE MEASUREMENTS MENU Press the ! and " keys to move about in the MEASUREMENTS menu.

MEASUREMENTS

IA RMS = 0.00 A

IB RMS = 0.00 A

IC RMS = 0.00 A

IN RMS = 0.00 A

Display of the current of phase A (true RMS value) taking into account the phase CT ratio (CT RATIO submenu) Display of the current of phase B (true RMS value) taking into account the phase CT ratio (CT RATIO submenu) Display of the current of phase C (true RMS value) taking into account the phase CT ratio (CT RATIO submenu) Display of the earth current (true RMS- value) taking into account the earth CT ratio (CT RATIO submenu)

Display of the positive sequence current

I1 POSITIVE = 0.00 A

Display of the negative sequence current

I2 NEGATIVE = 0.00 A

Display of the zero sequence current

Io ZERO = 0.00 A

FREQUENCY = 0.0 Hz

MAX PH CURRENT = PROCESS 0.00 A NOTE:

Display of the frequency of the power system supplying the motor, calculated from the phase currents

Display of the maximum phase current value outside the starting period

The 3 phase currents and the earth current are displayed as true RMS values: taking into account up to the 10th harmonic at 50 Hz, and up to the 8th at 60 Hz.

Technical Guide Menu of the HMI MiCOM P220

4.

P220/EN HI/B43 Page 11/48

THE PROCESS SUBMENU Press the ! and " keys to move about in the PROCESS menu.

PROCESS

% I FLC 0%

THERMAL STATE = CLR ?= CL 0%

T before TH TRIP =

0s

Display of the current consumed by the motor as a percentage of the thermal tripping current threshold Iθ> Display of the thermal state of the motor (tripping at 100 %). For the test phases of the relay P220, you can reset the thermal state to zero by pressing the key &. Display of the time before thermal tripping occurs, once the thermal alarm threshold θALARM is exceeded.

Display of the temperature of the probe RTD1 (optional). ... and similarly for RTD2, RTD3, RTD4, RTD5 and RTD6 (optional).

Temperature RTD 1 = °C

Display of the number of starts permitted.

PERMIT START NB 0

T before START 0s

Display of the time to wait before a new start is permitted.

Display of the current of the last start.

Last Start I = 0.00 A

Display of the duration of the last start.

Last Start Time 0s

MOTOR START NB CLR ? = CL 0

EMERG RESTART NB CLR ? = CL 0

MOT OPERAT HOURS CLR ? = CL 0 h

Display of the number of starts of the motor. To reset to zero press & key.

Display of the number of emergency starts. To reset to zero: press & key.

Display of the number of operating hours of the motor. To reset to zero: press & key.

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Technical Guide Menu of the HMI MiCOM P220

Page 12/48

5.

THE TRIP STATISTICS MENU Press the ! and " keys to move about in the TRIP STATISTICS menu.

TRIP STATISTICS

STATISTICS CLR ? = CL

To reset all the tripping statistics to zero, press key &. NO

TOTAL TRIP NB 0

OPERATOR TRIP NB 0

THERM TRIP NB =

t I >> TRIP NB =

t Io>, t Io>> TRIP NB =

t Ii > , t Ii >> TRIP NB =

t Istart TRIP NB =

t Istall TRIP NB =

LOCKED ROTOR TP NB =

0

0

0

0

0

0

0

Display of the total number of tripping operations (with and without fault)

Display of the number of deliberate tripping operations (without fault)

Display of the number of tripping operations caused by a thermal overload

Display of the number of tripping operations caused by a short-circuit

Display of the number of tripping operations caused by an Earth fault

Display of the number of tripping operations caused by an unbalance

Display of the number of tripping operations caused by an excessively long start

Display of the number of tripping operations caused by a stalled rotor while the motor is running

Display of the number of tripping operations caused by a locked rotor when starting

Technical Guide Menu of the HMI MiCOM P220 t I < TRIP NB =

RTD1 TRIP NB =

thermist 1 TRIP NB =

EQUATION A TRIP NB =

P220/EN HI/B43 Page 13/48

0

0

0

0

Display of the number of tripping operations caused by the protection against undercurrents/loss of load

Display of the number of tripping operations caused by the temperature protection function by probe RTD1 (optional) ...and so on for RTD2, RTD3, RTD4, RTD5 and RTD6 (optional Display of the number of tripping operations caused by the temperature protection function by thermistor 1 (optional) ...ditto for thermistor 2 (optional) Display of the number of tripping operations on account of the validation of equation A … ditto for equations B, C and D.

P220/EN HI/B43

Technical Guide Menu of the HMI MiCOM P220

Page 14/48

6.

THE COMMUNICATION MENU •

If communication is under the MODBUS protocol Press the ! and " keys to move about in the COMMUNICATION menu

COMMUNICATION

COM. OK =

YES

DATA RATE = 19200 Bd

PARITY = WITHOUT

DATA BITS=

7

STOP BITS = 1

RELAY ADRESS = 1

•

Use of the communication (RS485) at the rear of the MiCOM P220 relay. To activate the communication, press the # key, select YES by using the ! and " keys, then press # again to confirm. Selection and display of the transmission speed. Choice of: 300, 600, 1200, 2400, 4800, 9600, 19200 or 38400 bauds. Selection and display of the parity in the communication frame. Choice of: With (even or odd) or Without Selection and display of the number of data bits in the frame. Choice of: 7 or 8

Selection and display of the number of stop bits. Au Choice : 1 or 2

Selection and display of the address of the MiCOM P220 relay in the network. Choice from: 1 to 255

If communication is under the Courier protocol Press the ! and " keys to move about in the COMMUNICATION menu.

COMMUNICATION

COM. OK = YES

RELAY ADRESS =

1

Use of the communication (RS485) at the rear of the MiCOM P220 relay To activate the communication, press the # key, select YES by using the ! and " keys, then press # again to confirm. Selection and display of the address of the MiCOM P220 relay in the network. Choice from: 1 to 255

Technical Guide Menu of the HMI MiCOM P220

P220/EN HI/B43 Page 15/48

7.

THE PROTECTION MENU

7.1

The [49] THERMAL OVERLOD submenu Press the ! and " keys to enter the PROTECTION G1 menu.

PROTECTION G1

[49] THERMAL OVER LOAD

To move about in the submenu [49] THERMAL OVERLOAD, press the ! and "keys. To enter the other submenus, press the % and $ keys.

THERMAL OVERLOAD FUNCT ? YES

To switch on the "thermal overload" function: press the # key, select YES by using the ! and ". Confirm with #.

θ INHIBIT ? YES

Iθ > =

0.2 In

Ke =

3

Te1 = 1 mn

Te2 = 1 mn

Tr =

1 mn

RTD1 INFLUENCE ? YES

θ ALARM ?

YES

To switch on the "thermal inhibition on starting" function, press the # key, select YES using the ! and " keys. To confirm the selection, press the # key. Setting of the thermal overload current threshold Iθ>: from 0.2 In to 1.5 In in steps of 0.01 In

Setting of the value of the negative sequence contribution factor Ke in the thermal image : from 0 to 10 in steps of 1 Setting of the value of the overload time constant Te1: from 1 to 180 minutes in steps of 1 min

Setting of the starting time constant value Te2: from 1 to 360 minutes in steps of 1 minute

Setting of the value of the cooling time constant Tr: from 1 to 999 minutes in steps of 1 minute

To switch on the function of "influence of a RTD temperature probe" (optional): press the # key, select YES using the ! and " keys. To confirm the selection, press the # key. To switch on the "thermal alarm" function: press the # key, select YES using the ! and " keys. To confirm the choice, press the # key.

P220/EN HI/B43

Technical Guide Menu of the HMI MiCOM P220

Page 16/48 θ ALARM =

20 %

θ FORBID START ? YES

θ FORBID START =

7.2

20 %

Setting of the thermal alarm threshold value θALARM: from 20 % to 100 % in steps of 1 %

To switch on the "thermal inhibition of start" function: press the # key, select YES using the ! and " keys. To confirm the selection, press the # key. Setting of the threshold value for thermal inhibition of start θforbid: from 20% to 100% in steps of 1%

The [50/51] SHORT-CIRCUIT submenu Press the ! and " keys to enter the PROTECTION G1 menu.

PROTECTION G1

[50/51] SHORT-CIRCUIT

I>> FUNCTION ? YES

I >> = 1.0 In

t I >> = 10 ms

To move about in the [50/51] SHORT-CIRCUIT submenu, press the ! and " keys.. To enter the other submenus, press the % and $ keys. To switch on the "short-circuit" function : press the # key. Select YES by using the ! and " keys. To confirm the selection, press the # key. Setting of the short-circuit current threshold value I>>: from 1 to 12 In by steps of 0.1 In.

Setting of the time delay tI>> associated with the threshold I>>: from 0 to 100 s in steps of 0.01 s

Technical Guide Menu of the HMI MiCOM P220 7.3

P220/EN HI/B43 Page 17/48

The [50N/51N] EARTH FAULT submenu Press the ! and " keys to enter the PROTECTION G1 menu.

PROTECTION G1

To move about in the [50N/51N] EARTH FAULT submenu, press the ! and " keys To enter the other submenus, press the % and $ keys.

[50N/51N] EARTH FAULT

Io> FUNCTION ? YES

Io> = 0.002 Ion

t Io> = 0 ms

Io>> FUNCTION ? YES

Io>> = 0.002 Ion

t Io>> = 10 ms

To switch on the "earth fault" function (threshold Io>): press the # key. Select YES by using the ! and " keys. To confirm the selection, press the # key. Setting of the first earth fault current threshold value Io>: from 0,002 to 1 Ion in steps of 0,001 Ion Setting of the time delay tIo> associated with the threshold Io>: from 0 to 100 s in steps of 0.01 To switch on the "earth fault" function (Io>> threshold): press the # key. Select YES by using the ! and " keys To confirm the selection, press the # key. Setting of the second earth fault current threshold value Io>> : from 0.002 to 1 Ion in steps of 0.001 Ion Setting of the time delay associated with the threshold Io>> : from 0 ms to 100 s in steps of 0.01 s

P220/EN HI/B43

Technical Guide Menu of the HMI MiCOM P220

Page 18/48 7.4

The [46] UNBALANCE submenu Press the ! and " keys to enter the PROTECTION G1 menu.

PROTECTION G1

To move about in the [46] UNBALANCE submenu, press the ! and " keys. To enter the other submenus, press the % and $ keys.

[46] UNBALANCE

Ii> FUNCTION ? YES

Ii > = 0.05 In

t Ii > = 40 ms

Ii>> FUNCTION ? YES

Ii >> = 0.2 In

To switch on the "unbalance" function (threshold Ii>): press the # key, select YES by using the ! and " keys. To confirm the selection, press the # key. Setting of the first unbalance current threshold value Ii> : from 0.05 to 0.8 In in steps of 0.025 In Setting of the time delay tIi> associated with the threshold Ii> : from 40 to 100 s in steps of 0.01 s To switch on the « unbalance » function (Ii>> threshold) : press the # key, select YES by using the ! and " keys. To confirm the selection, press the # key. Setting of the second unbalance current threshold value Ii>>: from 0,2 to 0,8 In in steps of 0,05 In

Technical Guide Menu of the HMI MiCOM P220 7.5

P220/EN HI/B43 Page 19/48

The[48] EXCES LONG START submenu Press the ! and " keys to enter the PROTECTION G1 menu.

PROTECTION G1

[48] EXCES LONG START

To move about in the [48] EXCES LONG START submenu, press the ! and " keys. To enter the other submenus, press the % and $ keys.

EXCES LONG START FUNCT ? YES

To switch on the "excessively long start" function: press the # key, select YES by using the ! and " keys. To confirm the selection, press the # key.

Istart DETECTION = 1.0 Iθ

t Istart = 14 s

Setting of the Istart detection threshold : from 1 to 5 Iθ pain steps of 0,5 Iθ

Setting of the time delay tIstart associated with the threshold Istart: from 1 to 200 s in steps of 0.01 s

P220/EN HI/B43

Technical Guide Menu of the HMI MiCOM P220

Page 20/48 7.6

The [51LR/50S] BLOCK ROTOR submenu PROTECTION G1

Press the ! and " keys to enter the PROTECTION G1 menu.

[51LR-50S] BLOCK ROTOR BLOQUE

To move about in the [51LR/50S] BLOCK ROTOR submenu, press the ! and " keys. To enter the other submenus, press the % and $ keys.

BLOCKED ROTOR FUNCT ?

To switch on the "blocked rotor" function: press the # key: select YES by using the ! and " keys. To confirm the selection, press the # key.

YES

t Istall = 0,1 s

Setting of the blocked rotor time delay tIstall associated with the Istall current threshold: from 0.1 to 60 s in steps of 0.1 s

YES

To switch on the "stalled rotor with motor running" function : press the # key, select YES by using the ! and " keys. To confirm the selection, press the # key.

Istall DETECTION = 1.0 Iθ

Setting of the stalled rotor detection current threshold Istall: from 1 to 5 Iθ in steps of 0.5 Iθ

LOCKED ROTOR AT START ? YES

To switch on the "locked rotor at start" function: press the # key, select YES by using the ! and " keys To confirm the selection, press the # key

STALLED ROTOR?

Technical Guide Menu of the HMI MiCOM P220 7.7

P220/EN HI/B43 Page 21/48

The [37] LOSS OF LOAD submenu Press the ! and " keys to enter the PROTECTION G1 menu.

PROTECTION G1

To move about in the [37] LOSS OF LOAD submenu, press the ! and " keys To enter the other submenus, press the % and $ keys

[37] LOSS OF LOAD

I< FUNCTION ? YES

I

DCBA 0000

t I >>

DCBA 0000

Io>

DCBA 0000

t Io>

DCBA 0000

Io>>

DCBA 0000

t Io>>

DCBA 0000

Press the ! and " keys to enter the AUTOMAT. CTRL menu.

To move about in the AND LOGIC EQUATION submenu, press the ! and " keys. To enter the other submenus, press the % and $ keys. To allocate the "thermal tripping information" (protection against thermal overloads) to one (or more) of the equations A, B, C and D : press the # key, allocate the value 1 under the letter by pressing the ! and " keys to increase or decrease, then confirm the selection using the #. Allocation of the thermal alarm threshold θALARM

Allocation of the thermal threshold for prohibiting starting θforbid

Allocation of the instantaneous threshold I >> (shortcircuit)

Allocation of the time-delayed threshold tI >> (shortcircuit)

Allocation of the instantaneous threshold Io> (earth fault)

Allocation of the time-delayed threshold tIo> (earth fault)

Allocation of the instantaneous threshold Io >> (earth fault)

Allocation of the time-delayed threshold tIo>> (earth fault)

P220/EN HI/B43

Technical Guide Menu of the HMI MiCOM P220

Page 28/48 t Ii >

DCBA 0000

t Ii >>

DCBA 0000

EXCES LG START

DCBA 0000

t Istall

DCBA 0000

LOCKED ROTOR

DCBA 0000

tI<

DCBA 0000

START NB LIMIT

DCBA 0000

T betw 2 Start

DCBA 0000

t RTD 1 ALARM

DCBA 0000

t RTD 1 TRIP

DCBA 0000

Thermist1

DCBA 0000

EXT1

DCBA 0000

Allocation of the time delayed threshold tIi> (unbalance)

Allocation of the time-delayed threshold tIi>> (unbalance)

Allocation of the time-delayed threshold tIstart (excessively long starts)

Allocation of the time-delayed threshold tIstall (stalling of the rotor when the motor is running)

Allocation of the function "rotor locked at start"

Allocation of the time-delayed threshold I < (undercurrent/loss of load)

Allocation of the function "limitation of the number of starts"

Allocation of the function Tbetw 2 start (function of the minimum time between 2 starts)

Allocation of the time-delayed threshold tRTD1 ALARM (temperature protection: optional)

Allocation of the time-delayed threshold tRTD1 TRIP (temperature protection: optional) …and so on for the probes RTD2, RTD3, RTD4, RTD 5 and RTD6 (optional) Allocation of the threshold Thermistor1: (temperature protection: optional) …ditto for thermistor 2 (optional) Allocation of the input EXT1 (instantaneous or with time delay)

Technical Guide Menu of the HMI MiCOM P220

8.6

P220/EN HI/B43 Page 29/48

EXT2

DCBA 0000

EXT3

DCBA 0000

EXT4

DCBA 0000

SUCCESS START

DCBA 0000

Allocation of the input EXT2 (instantaneous or with time delay)

Allocation of the input EXT3 (instantaneous or with time delay)

Allocation of the input EXT4 (instantaneous or with time delay)

Allocation of the information "successful start"

The AND LOGIC EQUAT T DELAY submenu Press the ! and " keys to enter the AUTOMAT. CTRL menu.

AUTOMAT. CTRL

AND LOGIC EQUAT T DELAY

To move about in the AND LOGIC EQUATION T DELAY submenu, press the ! and " keys. To enter the other submenus, press the % and $ keys.

EQU. A T operat = 0 mn

Setting of the time delay Toperat allocated to the logic equation A: from 0 to 60 min in steps of 0.1 s

EQU. A T reset = 0 mn

Setting of the time delay Treset allocated to the logic equation A: from 0 to 60 min in steps of 0.1 s ... and so on for the logic equations B, C and D

P220/EN HI/B43

Technical Guide Menu of the HMI MiCOM P220

Page 30/48 8.7

The AUX OUPUT RLY submenu AUTOMAT. CTRL

AUX OUTPUT RLY

THERM OV.

5432 0000

θ ALARM

5432 0000

θ FORBID. START

5432 0000

I >>

5432 0000

t I >>

5432 0000

Io>

5432 0000

t Io>

5432 0000

Io>>

5432 0000

t Io>>

5432 0000

Press the ! and " keys to enter the AUTOMAT. CTRL menu.

To move about in the AUX OUTPUT RLY submenu, press the ! and " keys To enter the other submenus, press the % and $ keys. To allocate the "thermal tripping" information (protection against thermal overloads) to one (or more) of the outputs Nos. 2 to 5 : press the # key, allocate the value 1 under the letter by pressing the ! and " keys to increase or decrease, then confirm the selection using the # key. Allocation of the thermal alarm threshold θALARM

Allocation of the thermal threshold for prohibiting starting θ forbid

Allocation of the instantaneous threshold I >> (shortcircuit)

Allocation of the time-delayed threshold tI >> (shortcircuit)

Allocation of the instantaneous threshold Io> (earth fault)

Allocation of the time-delayed threshold tIo> (earth fault)

Allocation of the instantaneous threshold Io >> (earth fault)

Allocation of the time-delayed threshold tIo>> (earth fault)

Technical Guide Menu of the HMI MiCOM P220

P220/EN HI/B43 Page 31/48

t Ii >

5432 0000

t Ii >>

5432 0000

EXCES LG START

5432 0000

t Istall

5432 0000

LOCKED ROTOR

5432 0000

tI<

5432 0000

START NB LIMIT

5432 0000

T betw 2 start

5432 0000

t RTD 1 ALARM

5432 0000

t RTD 1 TRIP

5432 0000

Thermist1

5432 0000

EXT1

5432 0000

Allocation of the time delayed threshold tIi> (unbalance)

Allocation of the time-delayed threshold tIi>> (unbalance)

Allocation of the time-delayed threshold tIstart (excessively long starts)

Allocation of the time-delayed threshold tIstall (stalling of the rotor when the motor is running

Allocation of the function "rotor locked at start

Allocation of the time-delayed threshold I < (undercurrent / loss of load)

Allocation of the function "limitation of the number of starts"

Allocation of the function Tbetw 2 start (functions of the minimum time between 2 starts)

Allocation of the time-delayed threshold tRTD1 ALARM (temperature protection: optional)

Allocation of the time-delayed threshold tRTD1 TRIP (temperature protection: optional) …and so on for the probes RTD2, RTD3, RTD4, RTD5 and RTD6 (optional) Allocation of the threshold Thermistor 1: (temperature protection: optional) …ditto for thermistor 2 (optional) Allocation of the input EXT1 (instantaneous or with time delay)

P220/EN HI/B43

Technical Guide Menu of the HMI MiCOM P220

Page 32/48 EXT2

5432 0000

EXT3

5432 0000

EXT4

5432 0000

CLOSE ORDER

5432 0000

TRIP ORDER

5432 0000

ORDER 1

5432 0000

ORDER 2

5432 0000

SUCCESS START

5432 0000

t EQU. A

5432 0000

t EQU. B

5432 0000

t EQU. C

5432 0000

t EQU. D

5432 0000

Allocation of the input EXT2 (instantaneous or with time delay)

Allocation of the input EXT3 (instantaneous or with time delay)

Allocation of the input EXT4 (instantaneous or with time delay)

Allocation of the closing command (order given by a supervisor via the RS485)

Allocation of the tripping command (order given by a supervisor via the RS485)

Allocation of the command ORDER 1 (any order given by a supervisor via the RS485)

Allocation of the command ORDER 2 (any order given by a supervisor via the RS485)

Allocation of the "successful start" information

Allocation of the logic equation A

Allocation of the logic equation B

Allocation of the logic equation C

Allocation of the logic equation D

Technical Guide Menu of the HMI MiCOM P220

8.8

P220/EN HI/B43 Page 33/48

SW OPER TIME

5432 0000

SW OPER NB

5432 0000

SAn

5432 0000

ACTIVE GR

5432 0000

Allocation of the circuit breaker operating time threshold

Allocation of the threshold of the number of operations performed by the circuit breaker

Allocation of the threshold of the sum of amperes to the power of n interrupted by the circuit breaker

Allocation of the active group

The LATCH OUTPUT RELAYS submenu Latching configuration of ouput relay n°2.

OUTPUT 2 NO

Latching configuration of ouput relay n°3.

OUTPUT 3 NO

Latching configuration of ouput relay n°4.

OUTPUT 4 NO

Latching configuration of ouput relay n°5.

OUTPUT 5 NO

P220/EN HI/B43

Technical Guide Menu of the HMI MiCOM P220

Page 34/48 8.9

The TRIP OUTPUT RLY submenu Press the ! and " keys to enter the AUTOMAT. CTRL menu.

AUTOMAT. CTRL

To move about in the TRIP OUTPUT RLY submenu, press the ! and " keys. To enter the other submenus, press the % and $ keys.

TRIP OUTPUT RLY

THERM OVERLOAD ? YES

t I >> ? YES

t Io> ? YES

t Io>> ?

YES

t Ii > ? YES

t Ii >> ? YES

EXCES LONG START ?

YES

t Istall ? YES

To allocate the « thermal tripping information (protection against thermal overloads) to the trip output relay (output relay n° 1), press the # key, select YES using the ! and " keys, then confirm the selection using the # key. Allocation of the time-delayed threshold tI >> (shortcircuit)

Allocation of the time-delayed threshold tIo > (earth fault)

Allocation of the time-delayed threshold tIo >> (earth fault)

Allocation of the time-delayed threshold tIi > (unbalance)

Allocation of the time-delayed threshold tIi >> (unbalance)

Allocation of the time-delayed threshold tIstart (excessively long start)

Allocation of the time-delayed threshold tIstall (rotor stalled while motor is running)

Allocation of the function "rotor locked at start"

LOCKED ROTOR ? YES

Technical Guide Menu of the HMI MiCOM P220 tI