EVRC2A Manual 02 Control

RECLOSER CONTROL EVRC2A USER’S MANUAL

ENTEC

ENTEC ELECTRIC & ELECTRONIC CO., LTD

RECLOSER CONTROL EVRC2A

http://www.entecene.co.kr

TABLE OF CONTENTS

1. INTRODUCTION..........................................................................................................11 1.1. Description ........................................................................................................................ 11 1.2. Summary of Features......................................................................................................... 12 PROTECTION ................................................................................................................. 12 MONITORING ................................................................................................................ 12 METERING ..................................................................................................................... 13 COMMUNICATIONS ..................................................................................................... 13 RECORDER..................................................................................................................... 13 USER INTERFACE ......................................................................................................... 13 AUXILIARY OUTPUTS - Option................................................................................... 14 AUXILIARY INPUTS - Option....................................................................................... 14

2. TECHNICAL SPECIFICATIONS .............................................................................. 15 2.1. Inputs and Outputs............................................................................................................. 15 Systems............................................................................................................................. 15 Frequency ......................................................................................................................... 15 Control Voltage Input ....................................................................................................... 15 User available DC power Output - Option ....................................................................... 15 Capacitor Voltage Divider Inputs (CVD) - Standard........................................................ 15 Voltage Transformer Inputs (VT) - Option....................................................................... 15 Current Transformer Inputs (CT) ..................................................................................... 16 Control Inputs - Option .................................................................................................... 16 Control Output Contacts - Option .................................................................................... 17 2.2. Type Withstand Tests......................................................................................................... 17 Dielectric Strength............................................................................................................ 17 Impulse Voltage ................................................................................................................ 17 Surge Withstand Capability .............................................................................................. 17 Vibration Test ................................................................................................................... 18 Control Operating Temperature........................................................................................ 18 2.3. Metering Accuracy ............................................................................................................ 19 2.4. Protection Elements........................................................................................................... 20

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2.5. Monitoring......................................................................................................................... 23 2.6. Recorder ............................................................................................................................ 24 WAVEFORM CAPTURE ................................................................................................ 24 SYSTEM EVENT RECORDER...................................................................................... 24 DIAGNOSTIC EVENT RECORDER ............................................................................. 25 LOAD PROFILE.............................................................................................................. 25 COUNTER ....................................................................................................................... 25 RECLOSER WEAR......................................................................................................... 25 2.7. Communications................................................................................................................ 26

3. USER INTERFACE PANEL ........................................................................................ 27 3.1. Construction ...................................................................................................................... 28 3.1.1. Operation Section................................................................................................... 28 3.1.2. Local Control Section............................................................................................. 29 3.1.3. Fault Indication Section ......................................................................................... 31 3.1.4. Voltage Elements Section ....................................................................................... 32 3.1.5. Sequence Status Section......................................................................................... 33 3.1.6. System Diagnostic Section..................................................................................... 33 3.1.7. Battery Test Section................................................................................................ 33 3.1.8. Menu Control Section ............................................................................................ 34 3.2. LCD Display ..................................................................................................................... 36 3.2.1. Main Menu Summary............................................................................................. 36 3.2.2. PRIMARY SETTING ............................................................................................ 36 3.2.3. ALTERNATE SETTING........................................................................................ 37 3.2.4. STATUS ................................................................................................................. 37 3.2.5. METERING ........................................................................................................... 37 3.2.6. MAINTENANCE................................................................................................... 37 3.2.7. EVENT RECORDER............................................................................................. 37 3.3. Using the LCD Menu ........................................................................................................ 39 3.3.1. View Example ........................................................................................................ 39 3.3.2. Setting Example ..................................................................................................... 40 3.3.3. Help Function......................................................................................................... 40 3.3.4. Time Display Type ................................................................................................. 40 3.3.5. Setting Save............................................................................................................ 41 3.3.6. Passcode Change Step ............................................................................................ 42

4. SYSTEM SETUP........................................................................................................... 43

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4.1. Current Sensing ................................................................................................................. 43 4.1.1. Description ............................................................................................................. 43 4.1.2. Setting..................................................................................................................... 43 4.2. Line VT Sensing................................................................................................................ 44 4.2.1. Description ............................................................................................................. 44 4.2.2. Setting..................................................................................................................... 44 4.2.3. Setting Examples .................................................................................................... 45 4.3. Line VL Sensing................................................................................................................ 47 4.3.1. Description ............................................................................................................. 47 4.3.2. Setting..................................................................................................................... 47 4.3.3. Setting Example ..................................................................................................... 47 4.4. System Power .................................................................................................................... 48 4.4.1. Description ............................................................................................................. 48 4.4.2. Setting..................................................................................................................... 48 4.5. Panel Sleep Time ............................................................................................................... 48 4.5.1. Description ............................................................................................................. 48 4.5.2. Setting..................................................................................................................... 48 4.6. Opto Input Set ................................................................................................................... 49 4.6.1. Description ............................................................................................................. 49 4.6.2. Setting..................................................................................................................... 49 4.6.3. Setting..................................................................................................................... 49 4.7. Output Relay Set ............................................................................................................... 50 4.7.1. Description ............................................................................................................. 50 4.7.2. Setting..................................................................................................................... 50

5. PROTECTION .............................................................................................................. 52 Protective Elements - ANSI Designations........................................................................ 53 5.1. Phase (Fast/Delay) Time Overcurrents (51P).................................................................... 54 5.2. Phase High Current Trip (50P-1)....................................................................................... 58 5.3. Phase High Current Lockout Element (50P-2).................................................................. 60 5.4. Ground (Fast/Delay) Time Overcurrent (51G).................................................................. 62 5.5. Ground High Current Trip (50G-1) ................................................................................... 65 5.6. Ground High Current Lockout (50G-2) ............................................................................ 67 5.7. Sensitive Earth Fault (SEF) ............................................................................................... 69 5.8. Negative Sequence (Fast/Delay) Time Overcurrent (46) ..................................................................... 71 5.9. Negative Sequence High Current Trip (46(50)-1)............................................................. 73 5.10. Negative Sequence High Current Lockout (46(50)-2) ....................................................................... 75

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5.11. Directional Controls (67)................................................................................................. 77 5.11.1. Phase Directional Controls (67P) ......................................................................... 78 5.11.2. Ground Directional Controls (67G)...................................................................... 80 5.11.3. Negative Sequence Directional Controls (67(46)) ............................................... 82 5.12. RECLOSE (79) ............................................................................................................... 85 5.12.1. Lockout................................................................................................................. 89 5.12.2. Reset ..................................................................................................................... 90 5.13. COLD LOAD PICKUP................................................................................................... 91 5.14. SEQUENCE COORDINATION..................................................................................... 97 5.15. TIME OVERCURRENT CURVES ................................................................................ 99 5.16. UNDERVOLTAGE ELEMENT (27) ............................................................................ 126 5.17. OVERVOLTAGE ELEMENT (59)............................................................................... 128 5.18. UNDERFREQUENCY LOAD SHEDDING (81) ........................................................ 130 5.19. OTHER ELEMENT...................................................................................................... 132 5.20. SYNCHRONISM CHECK (25).................................................................................... 133 5.21. FAULT LOCATOR ....................................................................................................... 135

6. METERING ................................................................................................................. 137 6.1. Metering Elements .......................................................................................................... 137 6.1.1. Current.................................................................................................................. 137 6.1.2. Voltage.................................................................................................................. 137 6.1.3. Frequency ............................................................................................................. 138 6.1.4. Synchro Voltage ................................................................................................... 138 6.1.5. Power.................................................................................................................... 139 6.1.6. Energy .................................................................................................................. 139 6.1.7. Demand ................................................................................................................ 140 6.1.8. System .................................................................................................................. 141 6.2. Accuracy.......................................................................................................................... 142

7. MONITORING............................................................................................................ 143 7.1. Demand ........................................................................................................................... 143 7.1.1. Description ........................................................................................................... 143 7.1.2. Related Setting Menu ........................................................................................... 143 7.2. SYNCHRONISM CHECK ............................................................................................. 146 7.3. TRIP COUNTER............................................................................................................. 146 7.3.1. Trip Counter Explanation ..................................................................................... 146 7.3.2. Related Setting Menu ........................................................................................... 146

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7.4. RECLOSER WEAR........................................................................................................ 148 7.4.1. Explanation........................................................................................................... 148 7.4.2. Related setting menu ............................................................................................ 148

8. EVENT RECORDER ................................................................................................. 150 8.1. WAVEFORM CAPTURE ............................................................................................... 150 8.1.1. Trigger Source ...................................................................................................... 150 8.1.2. Data Channels....................................................................................................... 151 8.1.3. Sample Rate.......................................................................................................... 151 8.1.4. Storage capacity.................................................................................................... 151 8.1.5. Related Setting Menu ........................................................................................... 151 8.1.6. Interface software ................................................................................................. 152 8.2. SYSTEM EVENT RECORDER ..................................................................................... 153 8.2.1. Trigger Source ...................................................................................................... 153 8.2.2. Trigger Time ......................................................................................................... 153 8.2.3. Trigger type .......................................................................................................... 153 8.2.4. Storage Capacity................................................................................................... 153 8.2.5. Related Setting Menu ........................................................................................... 154 8.2.6. Interface software ................................................................................................. 154 8.3. DIAGNOSTIC EVENT RECORDER ............................................................................ 155 8.3.1. Trigger Source ...................................................................................................... 155 8.3.2. Trigger Time ......................................................................................................... 155 8.3.3. Trigger type .......................................................................................................... 155 8.3.4. Storage Capacity................................................................................................... 155 8.3.5. Related Setting Menu ........................................................................................... 155 8.3.6. Interface software ................................................................................................. 156 8.4. LOAD PROFILE............................................................................................................. 157 8.4.1. Trigger Source ...................................................................................................... 157 8.4.2. Trigger Time ......................................................................................................... 157 8.4.3. Storage Capacity................................................................................................... 157 8.4.4. Related Setting Menu ........................................................................................... 158 8.4.5. Interface software ................................................................................................. 159

9. COMMUNICATION .................................................................................................. 160 9.1. OVERVIEW .................................................................................................................... 160 9.2. RTU Communication Setup (DNP 3.0 Protocol) - Option.................................................................. 161 9.3. RTU Communication Setup (MODBUS Protocol) - Option ............................................................... 167

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9.4. RTU Communication Setup (DNP 3.0 & MODBUS Protocol) - Option................................................ 169

10. INSTALLATION ....................................................................................................... 170 10.1. User Interface Door and Power Switch......................................................................... 170 10.2. Vent and Outer Cover .................................................................................................... 171 10.3. Dimensions and Mounting Plan .................................................................................... 172 10.4. Earth Wiring Diagram ................................................................................................... 174 10.5. Inner Structure............................................................................................................... 175 10.6. Mount Accessories Dimensions .................................................................................... 176 10.7. User-Available DC Power ............................................................................................. 177 10.8. Terminal Block and Fuses ............................................................................................. 178 10.9. EVRC2A Wiring Diagram - CVD Type........................................................................ 179 10.10. EVRC2A Wiring Diagram - VT Type ......................................................................... 180 10.11. Side Panel .................................................................................................................... 181 10.12. Current Inputs Wiring Diagram................................................................................... 182 10.13. Capacitor Voltage Divider Type Voltage Inputs Wiring Diagram (EPR LOAD SIDE CVD - Option) - Option183 10.14. Voltage Transformer Type Voltage Inputs Wiring Diagram - Standard ............................................... 184 10.15. Load Side VT Wiring Diagram - Option ..................................................................... 185 10.16. Current and Voltage Inputs Phase Rotation................................................................. 186 10.17. Control Cable Receptacle Pin Descriptions ................................................................ 187 10.18. Control Cable Assembling / De-assembling ............................................................... 189 10.19. AC Power Receptacle Pin Descriptions ...................................................................... 189 10.20. AC Power Cable .......................................................................................................... 190 10.21. FUSES......................................................................................................................... 190 10.22. Battery and Control run time....................................................................................... 191 10.23. Charge Circuit ............................................................................................................. 192 10.24. Battery Change............................................................................................................ 192 10.25. COMMUNICATIONS ................................................................................................ 193 10.26. COMMUNICATION CABLES .................................................................................. 194 10.27. Hardware Block Diagram............................................................................................ 195 10.28. Recloser Trip and Close Circuits................................................................................. 196 10.29. Uninterruptible Power Supply for Trip & Close ......................................................... 197 10.30. MAIN BOARD ........................................................................................................... 198 10.31. ANALOG BOARD ..................................................................................................... 199 10.32. Recloser EVR Wiring Diagram................................................................................... 200 10.33. Recloser EPR Wiring Diagram.................................................................................... 201 10.34. Recloser Current Transformer (CT) ............................................................................ 202

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10.35. Recloser Capacitor Voltage Divider (CVD) ................................................................ 202 10.36. Recloser Pressure Sensor (Only EVR Type) ............................................................... 203 10.37. Recloser 52 contact and 69 contact ............................................................................. 204 10.38. Recloser Trip and Close Coil....................................................................................... 204 10.39. Recloser Test Kit ......................................................................................................... 205

11. MAINTANANCE ...................................................................................................... 206 11.1. Warning Events.............................................................................................................. 206 11.2. Malfunction Events ....................................................................................................... 208

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1. INTRODUCTION 1.1. Description y

EVRC2A with the microprocessor-based digital control technology is designed to provide protective coordination and fault clearance of distribution systems for the continuous best quality of electric service.

y

Remote monitoring and control can be provided by RTU(Remote Terminal Unit - Option) which fundamentally installed.

y

EVRC2A provides protection, control, and monitoring functions with both local and remote. It also displays the present trip/alarm conditions, and measured system parameters.

y

Recording of past trip, alarm or control events, maximum demand levels, and energy metering is also performed.

y

Users can operate Close and Trip, and also control EVRC2A with key buttons on the user interface panel; Protection Enabled, Ground Enabled, SEF Enabled, Reclose Enabled, Control Locked, Remote enabled, Alternate-settings, Program 1, Program 2, Hot line tag.

y

Users can manage the Recloser interface software using a portable PC for modification of settings, acquisition of event data, and management of operation history.

y

EVRC2A contains many T-C characteristic curves developed by IEEE C37.112, IEC255-3, McGraw Edison, and KEPCO to provide fully protective coordination for the continuous best quality of electric distribution. Users can select any time of current curve simply by programming and modifying.

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1.2. Summary of Features PROTECTION y

Phase Instantaneous Over-current Elements

y

Phase Time Over-current Elements

y

Phase Definite Time High Current Lockout Element

y

Ground Instantaneous Over-current Elements

y

Ground Time Over-current Elements

y

Ground Definite Time High Current Lockout Element

y

Sensitive Earth Fault Elements

y

Negative Instantaneous Over-current Elements

y

Negative Time Over-current Elements

y

Negative Definite Time High Current Lockout Element

y

Phase, Neutral, Ground, Sensitive Earth and Negative Sequence Directional Control

y

Automatic Reclosing(Up To 4 Shots)

y

Cold Load Pickup with Voltage Control

y

Sequence Coordination Control

y

Two Under-voltage Elements

y

Two Over-voltage Elements

y

Under-frequency Element

MONITORING y

Fault Locator

y

Demand trip and alarm(Ia, Ib, Ic, Ig, I2)

y

Trip Counter Limit

y

Synchronism Check

y

Recloser main contact Wear(Per Phase)

y

Recloser Operation Failure

y

Voltage Transformer Failure

y

Battery Automatic Load Test

y

Recloser Gas Over and Low pressure

y

Breaker Failure with Current Supervision

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METERING y

Phase, Ground and Sensitive Ground Current Phasors

y

Line and Phase Voltage Phasors

y

Current and Voltage Symmetrical Component Phasors

y

Frequency Magnitude and Rate

y

Synchronizing Voltage Phasor

y

Synchronizing Voltage Frequency

y

Synchronizing Delta㎸, Delta ㎐

y

Single and Three Phase Power(MW, Mvar, MVA, PF)

y

Energy(MWh, Mvarh)

y

Maximum Demand(Ia, Ib, Ic, MW, Mvar, MVA)

COMMUNICATIONS y

Front Panel COM1 RS232 Serial Port : EVRC2A interface software

y

Rear Terminal COM2 RS232 Serial Port : DNP 3.0 Protocol - Option

y

Rear Terminal COM3 RS485/422 Serial Port : Modbus - Option

RECORDER y

Trip and fault counter

y

System event recorder - last 512 events

y

Diagnostic event recorder - last 100 events

y

Load profile recorder - last 42days

y

Fault Waveform - 15 cycles×16

USER INTERFACE y

Fault indicators

y

Manual Battery Load Test: Battery Voltage and Charge Voltage

y

Dual Functional keypads

y

20×4 Character Display(LCD or VFD : Vacuum Fluorescent Display)

y

32 LED indicators - Fault indications, sequence status, battery status, etc

y

RS232 port

y

Context Help Messages

y

Access Security(Passcode)

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AUXILIARY OUTPUTS - Option y

7 Programmable Relays

y

1 Programmable Alarm Relay

AUXILIARY INPUTS - Option y

14

8 Opto-isolated Programmable Inputs

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2. TECHNICAL SPECIFICATIONS 2.1. Inputs and Outputs Systems y

3phase-3wire or 3phase-4wire, 38㎸ maximum, 800 Amp maximum

Frequency y

50 / 60㎐ system and ABC/ACB phase rotation

Control Voltage Input y

AC Voltage Input 110V/220Vac or other voltage (+10%,-15%)

y

Nominal Battery Voltage : 24Vdc

User available DC power Output - Option y

DC Power Voltage : 12, 15, 24Vdc

y

DC Power Continuous : 30W

y

DC Power for 10Sec : 70W

Capacitor Voltage Divider Inputs (CVD) - Standard y

Maximum Input Voltage 5V

y

Burden : 2e-6 VA

y

System Voltage : 15㎸, 27㎸, 38㎸

y

Capacitor value „ EVR - Phase Capacitor value : 20㎊ „ EPR - Source Side Phase Capacitor value : 26㎊ - Load Side Phase Capacitor value : 20㎊(Option)

Voltage Transformer Inputs (VT) - Option y

Voltage Inputs VA, VB, VC and VL

y

Input Voltage Range : Phase-Neutral Continuous 1.SELECT SETBANK 2.PRIMARY SETTING 3.ALTERNATE SETTING 4.EDITBANK SETTING 3.STATUS 4.METERING 5.MAINTENANCE 6.EVENT RECORDER

Main Menu consists of 8 sub-menu. You can choose any sub-menu by using [▲] [▼] key. Press [ENT] key to select the sub-menu.

As above explanation, you can move and select sub-menu.

3.3.1. View Example To see External input port status. Move to “/ STATUS / OPTO INPUT” The following screen is displayed. STATUS / OPTO INPUTS [OPTO Input Input Input Input Input Input Input Input

INPUTS] 1: OPEN 2: CLOSE 3: OPEN 4: OPEN 5: OPEN 6: OPEN 7: OPEN 8: CLOSE

OPEN : Shows External Input is de-asserted, CLOSE : Shows External Input is asserted. Only 4 lines are displayed on LCD Screen, use [▲] [▼] key to see next lines.

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3.3.2. Setting Example Step to change Phase Pickup current of protection elements in Primary setting. 1) Move to “PRIMARY SETTING / PROTECTION / PICKUP CURRENT / PHASE” A following screen is displayed. PRIMARY SETTING / PROTECTION / PICKUP CURRENT / PHASE [PICKUP CURRENT xCT] >Phase: 0.50 Ground: 0.25 S.E.F: 0.010

Range

OFF, 0.04 ~ 3.20

Default 0.50

Step

0.01

Setting value x CT Phase Ratio Ex) When CT ratio is 1000:1and setting value is 0.50, Pickup Current : 0.50 x 1000 = 500A

2) As above screen, to move to Phase, use [▲] [▼] key and press [ENT] key to move into value column. 3) Use [▲] [▼] keys and [◀] [▶] keys to change a new value. Press [ENT] key, then you see the changed Phase value. NOTE : You must save all changed values at Setting Save menu.

3.3.3. Help Function Help function displays the detail requirements for the setting. User can check the detail requirements of a setting after selecting the setting item by pressing [ENT] key. For more details, refer to “Appendix E” Help Message Pick up current - ph >Phase: 0.50 Ground: 0.25 S.E.F: 0.010

Help Message : Pickup current - phase (OFF,0.01-3.20 x CT phase ratio)

3.3.4. Time Display Type It is to set Date Display for all related Menu. PRIMARY SETTING / RELAY SETUP / TIME DIS’TYPE [TIME DISP’TYPE] >Time Disp’Type: YMD

Range

YMD, MDY

Default YMD

Step

YMD : it displays in turn Year / Month / Date MDY : it displays in turn Month / Date / Year

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3.3.5. Setting Save To save all changed values, steps are as follows; Move to “PRIMARY SETTING / SAVE SETTING” and follow each step as below. PRIMARY SETTING / SAVE SETTING ① 1) Type Passcode and press [ENT] key ENTER PASSCODE 0000

2) If Passcode is correct, screen ②(Left) appears; otherwise screen ① ②

(Left) appears again.

SETTING VALUE SAVE :SETTING SAVE

3) If screen ② appears, press [ENT] key to save changed value. System will restart with changed values. Screen ④ shows ”SAVE

③

SETTING” is done. SETTING CHANGE

!! SYSTEM STOP !!

④ SETTING CHANGE !!SYSTEM RESTART !!

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3.3.6. Passcode Change Step To set a new Passcode, steps are as follows; Move to “PRIMARY SETTING / RELAY SETUP / PASSCODE” PRIMARY SETTING / RELAY SETUP / PASSCODE ① [ PASSCODE CHANGE ] ENTER PASSCODE 0000

1) Type current Passcode. If Passcode is correct screen ③ appears. 2) If invalid Passcode was typed screen ② appears and screen ①

② [ PASSCODE CHANGE ] ENTER PASSCODE INVALID

appears again. (Manufacturer presets Passcode of 0000) 3) If passcode is correct, type a new Passcode and press [ENT] key. Confirmation message appears as “PRESS ENTER TO SAVE”.

③ [ PASSCODE CHANGE ] ENTER NEW PASSCODE 1234 PRESS ENTER TO SAVE

④

4) Press [ENT] key to save changed Passcode. Passcode has range of 0000 ~ 9999. Use [▲] [▼] [◀] [▶] key to choose a number.

[ PASSCODE CHANGE ] ENTER PASSCODE 1234 NEW PASSCODE : 1234

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4. SYSTEM SETUP Sets following items for System y

CT Ratio

y

VT or PT Ratio

y

Power Line Frequency, Phase rotation

y

Panel sleep time

y

Opto-Input setting

y

Relay output setting

4.1. Current Sensing 4.1.1. Description This Setting group is critical for all over-current protection features that have settings specified in multiples of CT rating. When the relay is ordered, the phase, ground, and sensitive ground CT inputs must be specified as 1 Amp. As the phase CTs are connected in wye (star), the calculated phasor sum of the three phase currents (Ia + Ib + Ic = Neutral Current = 3 I0) is used as the input for the neutral over-current. In addition, a zero-sequence (core balance) CT which senses current in all of the circuit primary conductors, or a CT in a neutral grounding conductor may also be used. For this configuration, the ground CT primary rating must be entered. To detect low level ground fault currents, the sensitive earth input may be used. In this case, the sensitive ground CT primary rating must be entered. For additional details on CT connections, refer to (see 10.12. Current Inputs Wiring Diagram).

4.1.2. Setting PRIMARY SETTING / SYSTEM SETUP / CURRENT SENSING / PHA CT Ratio [CURRENT SENSING] >PHA CT Ratio: 1000 GND CT Ratio: 1000 SEF CT Ratio: 1000

Range

1 ~ 1200

Default 1000

Step

1

Enter the phase CT primary current value.

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PRIMARY SETTING / SYSTEM SETUP / CURRENT SENSING / GND CT Ratio [CURRENT SENSING] PHA CT Ratio: 1000 >GND CT Ratio: 1000 SEF CT Ratio: 1000

Range

1 ~ 1200

Default 1000

Step

1

Enter the ground CT primary current value.

PRIMARY SETTING / SYSTEM SETUP / CURRENT SENSING / SEF CT Ratio [CURRENT SENSING] PHA CT Ratio: 1000 GND CT Ratio: 1000 >SEF CT Ratio: 1000

Range

1 ~ 1200

Default 1000

Step

1

Enter the sensitive earth CT primary current value.

4.2. Line VT Sensing 4.2.1. Description To measure Source Voltage, set Connect Type, 2nd Nominal Voltage, VT Ratio. With Line VTs installed, the EVRC2A can be used to perform voltage measurements, power calculations, and directional control of over-current elements.

4.2.2. Setting PRIMARY SETTING / SYSTEM SETUP / LINE VT SENSING / Connect Type [LINE VT SENSING] >Connect Type: NONE VT 2nd(v): 100.0 VT Ratio: 86.6

Range

NONE, WYE, DELTA, CVD-W, CVD-D

Default NONE

Step

~

Enter None if line VTs are not to be used. NONE : VT uninstalled. If used, external PT by user, enter the VT connection made to the system as Wye or Delta. WYE : Install type wye. DELTA : Install type delta. If installed VT of Capacitor Voltage Divide type. CVD-W : If the user system made to 3 phase 4 wire. CVD-D : If the user system made to 3 phase 3 wire.

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PRIMARY SETTING / SYSTEM SETUP / LINE VT SENSING / VT 2nd(v) [LINE VT SENSING] Connect Type: NONE >VT 2nd(v): 100.0 VT Ratio: 86.6

Range

50.0 ~ 250.0

Default 100.0

Step

0.1

Enter Secondary Nominal Voltage(V) This setting is the voltage across the VT secondary winding when nominal voltage is applied to the primary.

PRIMARY SETTING / SYSTEM SETUP / LINE VT SENSING / VT Ratio [LINE VT SENSING] Connect Type: NONE VT 2nd(v): 100.0 >VT Ratio: 86.6

Range

10.0 ~ 760.0

Default 86.6

Step

0.1

Enter the VT primary to secondary turns-ratio with this setting.

4.2.3. Setting Examples Use of CVD Case of CVD installed in Recloser, setup as follows; Usable in Wye connection. Set VT2nd(v) 100 as Default. PT Ratio is calculated as below. VoltageФ-Ф = VoltageФ-N × SQRT(3) VoltageФ-N = VT 2nd(v) × VT Ratio Hence, 15㎸Ф-Ф = 8.66㎸Ф-N, therefore 8.66㎸Ф-N = 100(V) × 86.6 If user line voltage between phases (VoltageФ-Ф) is 11, set VT2nd(v) of 73.3V and set VT Ratio of 86.6 (11㎸Ф-Ф => 6.35㎸Ф-N, 6.35㎸ = 73.3(V) × 86.6) 27㎸Ф-Ф = 15.59㎸Ф-N, therefore 15.59㎸Ф-N = 100(V) × 155.9 38㎸Ф-Ф = 21.94㎸Ф-N, therefore 21.94㎸Ф-N = 100(V) × 219.4

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Use of External PT by User Line is Wye connection type and has VФ-Ф = 15㎸. If external rated PT is 14400 : 120, then VT Ratio is 14400/120. Because of 15㎸Ф-Ф = 8.66㎸Ф-N, VT2nd(v) is 8.66㎸Ф-N / 120 = 71.2V Line with Delta connection type and has VФ-Ф= 15㎸. If external rated PT is 14400 : 120, then VT Ratio is 14400/120 and VT2nd(v) is 15㎸Ф-Ф / 120 = 125V Table 4-1. VT Ratios of External PTs Line-Line Voltage

Capacitor Voltage Divider Wye connection

Potential Transformer Wye connection

VT 2nd (v)

VT Ratio

VT 2nd (v)

100

86.6

71.2

VT Ratio

Delta connection VT 2nd (v)

120 15㎸

120 125

(14400:120)

(14400:120)

215 27㎸

100

155.9

72.5

215 125.6

(25800:120)

(25800:120)

300 38㎸

100

219.4

73.1

300 126.7

(36000:120)

46

VT Ratio

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RECLOSER CONTROL EVRC2A

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4.3. Line VL Sensing 4.3.1. Description To measure Load Voltage, set Connect Type, 2nd Nominal Voltage, VT Ratio. With Line VLs installed, the EVRC2A can be used to perform synchronism elements.

4.3.2. Setting PRIMARY SETTING / SYSTEM SETUP / LINE VL SENSING / Connect Type [LINE VL SENSING] >Connect Type: NONE VL 2nd(v): 100.0 VL Ratio: 86.6

Range

NONE, WYE, DELTA, CVD-W, CVD-D

Default NONE

Step

~

Enter None if line VLs are not to be used. NONE : VL uninstalled. If used, external PT by user, enter the VL connection made to the system as Wye or Delta. WYE : Install type wye. DELTA : Install type delta. If installed VT of Capacitor Voltage Divide type. CVD-W : If the user system made to 3 phase 4 wire. CVD-D : If the user system made to 3 phase 3 wire.

PRIMARY SETTING / SYSTEM SETUP / LINE VL SENSING / VL 2nd(v) [LINE VL SENSING] Connect Type: NONE >VL 2nd(v): 100.0 VL Ratio: 86.6

Range

50.0 ~ 250.0

Default 100.0

Step

0.1

Enter Secondary Nominal Voltage(V) This setting is the voltage across the VL secondary winding when nominal voltage is applied to the primary.

PRIMARY SETTING / SYSTEM SETUP / LINE VL SENSING / VL Ratio [LINE VL SENSING] Connect Type: NONE VL 2nd(v): 100.0 >VL Ratio: 86.6

Range

10.0 ~ 760.0

Default 86.6

Step

0.1

Enter the VL primary to secondary turns-ratio with this setting.

4.3.3. Setting Example Refer to (4.2.3. Setting Examples)

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4.4. System Power 4.4.1. Description Menu to set Frequency of Protected Line and installed Phase rotation.

4.4.2. Setting PRIMARY SETTING / SYSTEM SETUP / SYSTEM POWER / Frequency [SYSTEM POWER] >Frequency: 50 Phase Rotation: ABC

Range

50, 60㎐

Default 50㎐

Step

~

Select the nominal power system frequency. This value is used as a default to set the optimal digital sampling rate. PRIMARY SETTING / SYSTEM SETUP / SYSTEM POWER / Phase Rotation [SYSTEM POWER] Frequency: 50 >Phase Rotation: ABC

Range

ABC, ACB

Default ABC

Step

~

Select the phase rotation of the power system.

4.5. Panel Sleep Time 4.5.1. Description Menu to set the interval time that User interface panel turns into sleep mode.

4.5.2. Setting PRIMARY SETTING / SYSTEM SETUP / PANEL SLEEP TIME [PANEL SLEEP TIME] >Interval(m): 5

Range

OFF, 1 ~ 100 minute

Default 5 minute

Step

1 minute

Enter the sleep mode entering time Setting the interval time of which Panel indicator turns into Sleep mode

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RECLOSER CONTROL EVRC2A

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4.6. Opto Input Set 4.6.1. Description Menu to set External input terminal function and Debounce time. The opto input is available as an ordering option.

4.6.2. Setting PRIMARY SETTING / SYSTEM SETUP / OPTO INPUT SET / I1 Func [OPTO INPUT SET] >I1 Func: NONE I1 Debounce: 0.02 I2 Func: NONE

Range

NONE, TRIP, … , OUT8 RESET

Default NONE

Step

~

Enter the function of External input terminal Opto input can have following functions; NONE

TRIP

CLOSE

PROTECTION

GROUND

SEF

Enable/Disable

Enable/Disable

Enable/Disable

RECLOSE

CONTROL

ALTERNATE SETTINGS

Enable/Disable

Locked/Unlocked

Enable/Disable

PROGRAM1

PROGRAM2

HOT LINE TAG

Enable/Disable

Enable/Disable

Enable/Disable

FAULT INDICATION

OUTPUT RELAY BATTERY LOAD TEST

RESET

1∼8 RESET.

For more details, refer to (Appendix A).

4.6.3. Setting PRIMARY SETTING / SYSTEM SETUP / OPTO INPUT SET / I1 Debounce [OPTO INPUT SET] I1 Func: NONE >I1 Debounce: 0.02 I2 Func: NONE

Range

0.01 ~ 9.99

Default 0.02

Step

0.01

Enter debounce time to prevent chattering in Input

Input 2 ~ Input 8, the same as Input 1 above

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RECLOSER CONTROL EVRC2A

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4.7. Output Relay Set 4.7.1. Description Menu to set External Output Terminal Function and Output type. The output relay is available as an ordering option.

4.7.2. Setting PRIMARY SETTING / SYSTEM SETUP / OUTPUT RELAY SET / O1 Func [OUTPUT RELAY SET] >O1 Func: NONE O1 Type: S/R LATCH O1 Pulse T: 0.05

Range

NONE, TRIP, … , INPUT08

Default NONE

Step

~

Enter the function of External output terminal. Output Relay can have following function; NONE

TRIP

CLOSE

FAIL TRIP

FAIL CLOSE

FAIL AC

FAIL BATTTERY

27 ELEMENT

59 ELEMENT

25 ELEMENT

81 ELEMENT

79 RESET

79CYCLE

79LOCKOUT

SELFCHECK

PROTECTION Enable

GROUND Enable

SEF Enable

RECLOSE Enable

CONTROL Locked

REMOTE Enable

PROGRAM1 Enable

PROGRAM2 Enable

HOT LINE TAG Enable

FAULT INDICATION

ALARM

52A

INPUT 1~ 8

ALTERNATE SETTINGS Enable

For more detail, refer to (Appendix B). PRIMARY SETTING / SYSTEM SETUP / OUTPUT RELAY SET / O1 Type [OUTPUT RELAY SET] 01 Func: NONE >O1 Type: S/R LATCH O1 Pulse T: 0.05

Range

PULSE, LATCH, S/R LATCH

Default S/R LATCH

Step

~

S/R LATCH: Reset by itself when Self Reset Latch signal disappears. PULSE: Output operates for only time that user inputs. LATCH: A type that user have to reset to clear.

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PRIMARY SETTING / SYSTEM SETUP / OUTPUT RELAY SET / O1 Pulse T [OUTPUT RELAY SET] 01 Func: NONE O1 Type: S/R LATCH >O1 Pulse T: 0.05

Range

0.01 ~ 99.99

Default 0.05

Step

0.01

Sets Duration time (0.01 ~9.99Sec) if OUTPUT TYPE is PULSE

Output 2 ~ 8, the same as above

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RECLOSER CONTROL EVRC2A

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5. PROTECTION Protective Elements Block diagram - ANSI Designations

SOURCE

EVRC2A OPTION 1

CVD VT

V1, V2, 3V0

3VT

VT OPTION 2 3CVD

27 1,2

CVD TRANSDUCER

59 1,2

50P 1,2

81

51P 1,2 67P 1,2

Metering V, I, Watt, var, Hz, PF CT 3WYE

79 1-4

25

RECLOSER

I1 46/50 1,2

I2

46/51 1,2

46/67 1,2

3I0

27 OPTION 2 1CVD

CVD TRANSDUCER

OPTION 1 VT

81

50G 1,2

51G 1,2

67G 1,2

51 SEF

1VT

ZCT 3I0

LOAD

Figure 5-1. Protective Elements Block Diagram - ANSI Designations

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67 SEF

RECLOSER CONTROL EVRC2A

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Protective Elements - ANSI Designations Table 5-1. Protective Elements -ANSI Designations Protective Elements

ANSI Designations

Phase fast time overcurrent

51P1

Ground fast time overcurrent

51G1

Negative sequence fast time overcurrent

46(51)-1

Phase delay time overcurrent

51P2

Ground delay time overcurrent

51G2

Negative sequence delay time overcurrent

46(51)-2

Sensitive Earth Fault protection

51SEF

Phase directional time control

67P

Ground directional time control

67G

Negative sequence directional time control

67I2

Directional Sensitive Earth Fault

67SEF

Phase instantaneous high current trip

50P1

Ground instantaneous high current trip

50G1

Negative sequence instantaneous high current trip

46(50)1

Phase High current trip lockout

50P2

Ground High current trip lockout

50G2

Negative sequence High current trip lockout

46(50)2

Four shot recloser

79

Under voltage 1

27-1

Under voltage 2

27-2

Over voltage 1

59-1

Over voltage 2

59-2

Under frequency

81

Synchronism check

25

Cold load pickup Sequence coordination

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RECLOSER CONTROL EVRC2A

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5.1. Phase (Fast/Delay) Time Overcurrents (51P) The EVRC2A has two phase time overcurrent elements. The phase time overcurrent element contained in the EVR2A, is set based on CT secondary current as connected to the current inputs. The phase time overcurrent element is the most commonly used as a protective element for distribution systems and also used in both down-line and back-up recloser protection. The phase time overcurrent element provides a time delay versus current for tripping that is used for an inverse time curve characteristic coordinated with current pickup value, curve type, time dial, time adder, minimum response time setting and reset type. This inverse characteristic means that time overcurrent element operates slowly on small values of current above the pickup value and operates faster when current increases significantly above the pickup value. The phase time overcurrent element is enabled in the Primary, Alternate settings and PROTECTION ENABLED in user interface panel. Multiple time curves and time dials are available for the phase time overcurrent element to respectively coordinate with other protection elements in the EVRC2A and other external devices on the distribution system. ANSI, IEC, ESB, USER and non-standard time current curves are included in the EVRC2A. A User Programmable curve option is also available for user to allow creating custom’s time current curves for more enhanced coordination than the standard curve types. The Reset type can be either instantaneous or linear. The phase time delay reset mode applies to the ANSI, IEC, ESB, USER curves. The instantaneous mode is used to coordinate with other instantaneous reset devices such as a recloser or other protective equipment on the distribution system. In the instantaneous mode, the time overcurrent element will reset instantaneously when the measured current level drops below the pickup setting for one cycle. If the recloser is closed by pressing the CLOSE button on the front panel, or by an remote control or via SCADA, the phase time overcurrent element is prevented from tripping for a period specified by the Cold load pickup scheme.

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RECLOSER CONTROL EVRC2A

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The following setting is used to program the phase fast time overcurrent element. PRIMARY SETTING / PROTECTION / PICKUP CURRENT / Phase [PICKUP CURRENT xCT] >Phase: 0.50 Ground: 0.25 S.E.F: 0.010

Range

OFF, 0.04 ~ 3.20

Default 0.50

Step

0.01

Enter the pickup value as a fraction of the source CTs nominal current. The pickup current is the threshold current at which the phase time overcurrent element starts timing. The dropout threshold is 98% of the pickup threshold curves as a multiple of the source CT. For example, if 1000:1 CTs are used and a phase pickup of 500 amps is required for the phase time overcurrent element, enter 0.50

PRIMARY SETTING / PROTECTION / PHASE FAST / Function [PHASE FAST] >Function: TRIP Relays(0-8): OFF Curve: ANSI-SI

Range

TRIP, TR&AR

Default TRIP

Step

~

If function = Trip, the feature is operational. When the feature asserts a TRIP condition, Trip operates. If function = Trip & AR, the feature is operational. When the feature asserts a TRIP condition, TRIP and any other selected output relays operate.

PRIMARY SETTING / PROTECTION / PHASE FAST / Relays(0-8) [PHASE FAST] Function: TRIP >Relays(0-8): OFF Curve: ANSI-SI

Range

OFF, 0 ~ 8

Default OFF

Step

1

Selects the relays required to operate when the feature generates a Trip.

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RECLOSER CONTROL EVRC2A

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PRIMARY SETTING / PROTECTION / PHASE FAST / Curve [PHASE FAST] Function: TRIP Relays(0-8): OFF >Curve: ANSI-SI

Range

ANSI-MI, ANSI-NI, … , KG(165)

Default ANSI-SI

Step

~

Select the desired curve type : ANSI : Moderately, Normally, Very, Extremely, Short Inverse, Definite Time(1s ,10s) IEC : Standard, Very, Extremely, Long, Short Inverse ESB : Normally, Very, Long Very Inverse User programmable curves : U1,U2,U3,U4 McGraw-Edison : Non Standard Curves 37

PRIMARY SETTING / PROTECTION / PHASE FAST / Time Dial [PHASE FAST] Relays(0-8): OFF Curve: ANSI-SI >Time Dial: 0.50

Range

0.05 ~ 15.00

Default 0.50

Step

0.01

A time dial setpoint allows shifting of the selected base curve in the vertical time axis.

PRIMARY SETTING / PROTECTION / PHASE FAST / Time Adder [PHASE FAST] Curve: ANSI-SI Time Dial: 0.50 >Time Adder: 0.00

Range

0.00 ~ 10.00

Default 0.00

Step

0.01

An additional time delay is added to the time delay resulting from the time overcurrent curve function.

PRIMARY SETTING / PROTECTION / PHASE FAST / M.R.T [PHASE FAST] Time Dial: 0.50 Time Adder: 0.00 >M.R.T: 0.00

Range

0.00 ~ 10.00

Default 0.00

Step

0.01

The minimum time delay that will occur between pickup and trip, even if the time delay is shorter. This function can be useful for other protective device and line fuse coordination.

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PRIMARY SETTING / PROTECTION / PHASE FAST / Reset Method [PHASE FAST] Time Adder: 0.00 M.R.T: 0.00 >Reset Method: INST

Range

INST, LINEAR

Default INST

Step

~

Overcurrent tripping time calculations are made with an internal energy Capacity memory variable. When this variable indicates that the energy capacity has reached 100%, a time overcurrent trip is generated. If less than 100% is accumulated in this variable and the current falls below the dropout threshold of the pickup value, the variable must be reduced. Two methods of this resetting operation are available, Instantaneous and Linear. The Instantaneous selection is intended for applications with other relays, such as most static units, which set the energy capacity directly to zero when the current falls below the reset threshold. The Linear selection can be used where the relay must coordinate with electromechanical units.

The phase delay time overcurrent settings process is very similarly to the phase fast time overcurrent.

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RECLOSER CONTROL EVRC2A

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5.2. Phase High Current Trip (50P-1) The EVRC2A has a phase high current trip element. The phase high current trip element in the EVRC2A, is set based on CT secondary current as connected to the current inputs. The phase high current trip element provides a definite time delay versus current. The operating time of phase high current trip element should be set for equal to or faster than the phase time overcurrent elements. The phase high current trip element is enabled in the Primary, Alternate settings and PROTECTION ENABLED on user interface panel. Phase high current trip is not affected by the cold load pickup scheme. The phase high current trip element in the following five settings should be enabled for phase high current trip. PRIMARY SETTING / PROTECTION / H/C TRIP-PHA / Function [ H/C TRIP-PHA ] >Function: OFF Relays(0-8): OFF Pickup(xCT): 4.00

Range

OFF, TRIP, TR&AR

Default TRIP

Step

~

If function = OFF, the feature is not operational. If function = Trip, the feature is operational. When the feature asserts a TRIP condition, Trip operates. If function = Trip & AR, the feature is operational. When the feature asserts a TRIP & AR condition, it trips and alarms.

PRIMARY SETTING / PROTECTION / H/C TRIP-PHA / Relays(0-8) [ H/C TRIP-PHA ] Function: OFF >Relays(0-8): OFF Pickup(xCT): 4.00

Range

OFF, 0 ~ 8

Default OFF

Step

1

Selects the required relays to operate when the feature generates a Trip.

PRIMARY SETTING / PROTECTION / H/C TRIP-PHA / Pickup(xCT) [ H/C TRIP-PHA ] Function: OFF Relays(0-8): OFF >Pickup(xCT): 4.00

Range

1.00 ~ 20.00

Default 4.00

Step

0.01

Enter the pickup value as a fraction of the source CTs nominal current. The pickup current is the threshold current at which the phase high current trip element starts timing. For example, if 1000:1 CTs are used and a phase pickup of 4000 amps is required for the high current trip element, enter 4.00

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RECLOSER CONTROL EVRC2A

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PRIMARY SETTING / PROTECTION / H/C TRIP-PHA / Time Delay [ H/C TRIP-PHA ] Relays(0-8): OFF Pickup(xCT): 4.00 >Time Delay: 0.00

Range

0.00 ~ 10.00

Default 0.00

Step

0.01

The Time delay of phase high current trip setting programs a definite time delay for the phase high current trip. If set to zero, phase high current trip operates instantaneously.

PRIMARY SETTING / PROTECTION / H/C TRIP-PHA / Active Trip [ H/C TRIP-PHA ] Pickup(xCT): 4.00 Time Delay: 0.00 >Active Trip: OFF

Range

OFF, 1 ~ 5

Default OFF

Step

1

If Active Trip = OFF, the feature is not operate. If Active Trip = 2, then phase high current trip is enabled for the second trip operation and every following trip operation.

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5.3. Phase High Current Lockout Element (50P-2) The EVRC2A has a phase high current lockout element. The phase high current lockout element in the EVRC2A is set based on CT secondary current as connected to the current inputs. The phase high current lockout element provides a definite time delay versus current. When high current lockout element is enabled, high current lockout element is operated prior to any other phase protection elements. If a fault current is higher than the pickup setting value, Lockout is operated. The phase high current lockout element can be set by a number of its active trip that is applied to the full operation to lockout, time delay and fault current. This function is very useful to prevent widespread line faults due to reclosing operations in case of permanent fault. The operating time of phase high current lockout element should be set for equal to or faster than and phase high current trip element. The phase high current lockout element is enabled in the Primary, Alternate setting and PROTECTION ENABLED in user interface panel. The phase high current lockout element is not affected by the cold load pickup scheme. The phase high current lockout element in the following five setting should be enabled for phase high current trip. PRIMARY SETTING / PROTECTION / H/C LOCKOUT-PHA / Function [ H/C LOCKOUT-PHA ] >Function: OFF Relays(0-8): OFF Pickup(xCT): 8.00

Range

OFF, TRIP, TR&AR

Default TRIP

Step

~

If function = OFF, the feature is not operational. If function = Trip, the feature is operational. When the feature asserts a TRIP condition, Trip operates. If function = Trip & AR, the feature is operational. When the feature asserts a TRIP & AR condition, it trips and alarms.

PRIMARY SETTING / PROTECTION / H/C LOCKOUT-PHA / Relays(0-8) [ H/C LOCKOUT-PHA ] Function: OFF >Relays(0-8): OFF Pickup(xCT): 8.00

Range

OFF, 0 ~ 8

Default OFF

Step

1

Selects the required relays to operate when the feature generates a Trip.

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PRIMARY SETTING / PROTECTION / H/C LOCKOUT-PHA / Pickup(xCT) [ H/C LOCKOUT-PHA ] Function: OFF Relays(0-8): OFF >Pickup(xCT): 8.00

Range

1.00 ~ 20.00

Default 8.00

Step

0.01

Enter the pickup value as a fraction of the source CTs nominal current. The pickup current is the threshold current at which the phase high current lockout element starts timing. For example, if 1000:1 CTs are used and a phase pickup of 8000 amps is required for the high current lockout element, enter 8.00

PRIMARY SETTING / PROTECTION / H/C LOCKOUT-PHA / Time Delay [ H/C LOCKOUT-PHA ] Relays(0-8): OFF Pickup(xCT): 8.00 >Time Delay: 0.00

Range

0.00 ~ 10.00

Default 0.00

Step

0.01

The Time delay of phase high current trip setting programs a definite time delay for the phase high current trip. If set to zero, phase high current trip operates instantaneously.

PRIMARY SETTING / PROTECTION / H/C LOCKOUT-PHA / Active Trip [ H/C LOCKOUT-PHA ] Pickup(xCT): 8.00 Time Delay: 0.00 >Active Trip: OFF

Range

OFF, 1 ~ 5

Default OFF

Step

1

If Active Trip = OFF, the feature is not operate. If Active Trip = 2, then phase high current trip is enabled for the second trip operation and every following trip operation.

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RECLOSER CONTROL EVRC2A

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5.4. Ground (Fast/Delay) Time Overcurrent (51G) The EVRC2A has two ground time overcurrent elements. The ground time overcurrent element in the EVRC2A is set based on CT secondary current as connected to the current inputs. The ground time overcurrent element is the most commonly used as a protective element for distribution systems and also used in both down-line and back-up recloser protection. The ground time overcurrent element provides a time delay versus current for tripping that is used for an inverse time curve characteristic coordinated with current pickup value, curve type, time dial, time adder, minimum response time setting and reset type. This inverse characteristic means that time overcurrent element operates slowly on small values of current above the pickup value and operates faster when current increases significantly above the pickup value. The ground time overcurrent element is enabled in the Primary, Alternate settings and PROTECTION ENABLED in user interface panel. Multiple time curves and time dials are available for the ground time overcurrent element to closely coordinate with other protection elements within the EVRC2A and other external devices on the distribution system. ANSI, IEC, ESB, USER and non-standard time current curves are included in the EVRC2A. A User Programmable curve option is also available allowing the user to create customer time current curves for more enhanced coordination than the standard curve types. The Reset type can be either instantaneous or linear. The ground time delay reset mode applies to the ANSI, IEC, ESB, USER curves. The instantaneous mode is used to coordinate with other instantaneous reset devices such as a recloser or other protective equipment on the distribution system. In the instantaneous mode the time overcurrent element will reset instantaneously when the current level measured by the EVRC2A drops below the pickup setting for one cycle. If the recloser is closed by pressing the CLOSE button on the front panel, or by an remote control or via SCADA, the ground time overcurrent element is prevented from tripping for a period specified by the Cold load pickup scheme. The following setting is used to program the ground time overcurrent element.

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RECLOSER CONTROL EVRC2A

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PRIMARY SETTING / PROTECTION / PICKUP CURRENT / Ground [PICKUP CURRENT xCT] Phase: 0.50 >Ground: 0.25 S.E.F: 0.010

Range

OFF, 0.02 ~ 3.20

Default 0.25

Step

0.01

Enter the pickup value as a fraction of the source CTs nominal current. The pickup current is the threshold current at which the ground time overcurrent element starts timing. The dropout threshold is 98% of the pickup threshold curves as a multiple of the source CT. For example, if 1000:1 CTs are used and a phase pickup of 250 amps is required for the ground time overcurrent element, enter 0.25

PRIMARY SETTING / PROTECTION / GROUND FAST / Function [GROUND FAST] >Function: TRIP Relays(0-8): OFF Curve: ANSI-SI

Range

TRIP, TR&AR

Default TRIP

Step

~

If function = Trip, the feature is operational. When the feature asserts a TRIP condition, which will operate the Trip. If function = Trip & AR, the feature is operational. When the feature asserts a TRIP&AR condition, it trips and alarms.

PRIMARY SETTING / PROTECTION / GROUND FAST / Relays(0-8) [GROUND FAST] Function: TRIP >Relays(0-8): OFF Curve: ANSI-SI

Range

OFF, 0 ~ 8

Default OFF

Step

1

Selects the relays required to operate when the feature generates a Trip.

PRIMARY SETTING / PROTECTION / GROUND FAST / Curve [GROUND FAST] Function: TRIP Relays(0-8): OFF >Curve: ANSI-SI

Range

ANSI-MI, ANSI-NI, … , KG(165)

Default ANSI-SI

Step

~

Select the desired curve type : ANSI : Moderately, Normally, Very, Extremely, Short Inverse, Definite Time(1s ,10s) IEC : Standard, Very, Extremely, Long, Short Inverse ESB : Normally, Very, Long Very Inverse User programmable curves : U1,U2,U3,U4 McGraw-Edison : Non Standard Curves 37

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PRIMARY SETTING / PROTECTION / GROUND FAST / Time Dial [GROUND FAST] Relays(0-8): OFF Curve: ANSI-SI >Time Dial: 0.50

Range

0.05 ~ 15.00

Default 0.50

Step

0.01

A time dial setpoint allows shifting of the selected base curve in the vertical time axis.

PRIMARY SETTING / PROTECTION / GROUND FAST / Time Adder [GROUND FAST] Curve: ANSI-SI Time Dial: 0.50 >Time Adder: 0.00

Range

0.00 ~ 10.00

Default 0.00

Step

0.01

An additional time delay is added to the time delay resulting from the time overcurrent curve function.

PRIMARY SETTING / PROTECTION / GROUND FAST / M.R.T [GROUND FAST] Time Dial: 0.50 Time Adder: 0.00 >M.R.T: 0.00

Range

0.00 ~ 10.00

Default 0.00

Step

0.01

The minimum time delay that will occur between pickup and trip, even if the time delay is shorter. This function can be useful for other protective device and line fuse coordination.

PRIMARY SETTING / PROTECTION / GROUND FAST / Reset Method [GROUND FAST] Time Adder: 0.00 M.R.T: 0.00 >Reset Method: INST

Range

INST, LINEAR

Default INST

Step

~

Overcurrent tripping time calculations are made with an internal energy Capacity memory variable. When this variable indicates that the energy capacity has reached 100%, a time overcurrent trip is generated. If less than 100% is accumulated in this variable and the current falls below the dropout threshold of the pickup value, the variable must be reduced. Two methods of this resetting operation are available, Instantaneous and Linear. The Instantaneous selection is intended for applications with other relays, such as most static units, which set the energy capacity directly to zero when the current falls below the reset threshold. The Linear selection can be used where the relay must coordinate with electromechanical units.

The ground delay time overcurrent setting process is very similar to the ground fast time overcurrent setting process.

64

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RECLOSER CONTROL EVRC2A

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5.5. Ground High Current Trip (50G-1) The EVRC2A has a ground high current trip element. The ground high current trip element in the EVRC2A is set based on CT secondary current as connected to the current inputs. The ground high current trip element provides a definite time delay versus current. The operating time of ground high current trip overcurrent element should be set for equal to or faster than the ground time overcurrent elements. The ground high current trip element is enabled in the Primary, Alternate settings both PROTECTION ENABLED and GROUND ENABLED in user interface panel. Ground high current trip is not affected by the cold load pickup scheme. The ground high current trip element in the following five settings should be enabled for ground high current trip. PRIMARY SETTING / PROTECTION / H/C TRIP-GND / Function [ H/C TRIP-GND ] >Function: OFF Relays(0-8): OFF Pickup(xCT): 4.00

Range

OFF, TRIP, TR&AR

Default TRIP

Step

~

If function = OFF, the feature is not operational. If function = Trip, the feature is operational. When the feature asserts a TRIP condition, Trip operates. If function = Trip & AR, the feature is operational. When the feature asserts a TRIP & AR condition, it trips and alarms.

PRIMARY SETTING / PROTECTION / H/C TRIP-GND / Relays(0-8) [ H/C TRIP-GND ] Function: OFF >Relays(0-8): OFF Pickup(xCT): 4.00

Range

OFF, 0 ~ 8

Default OFF

Step

1

Selects the required relays to operate when the feature generates a Trip.

PRIMARY SETTING / PROTECTION / H/C TRIP-GND / Pickup(xCT) [ H/C TRIP-GND ] Function: OFF Relays(0-8): OFF >Pickup(xCT): 4.00

Range

1.00 ~ 20.00

Default 4.00

Step

0.01

Enter the pickup value as a fraction of the source CTs nominal current. The pickup current is the threshold current at which the phase high current trip element starts timing. For example, if 1000:1 CTs are used and a phase pickup of 4000 amps is required for the high current trip element, enter 4.00

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PRIMARY SETTING / PROTECTION / H/C TRIP-GND / Time Delay [ H/C TRIP-GND ] Relays(0-8): OFF Pickup(xCT): 4.00 >Time Delay: 0.00

Range

0.00 ~ 10.00

Default 0.00

Step

0.01

The Time delay of phase high current trip setting programs a definite time delay for the phase high current trip. If set to zero, phase high current trip operates instantaneously.

PRIMARY SETTING / PROTECTION / H/C TRIP-GND / Active Trip [ H/C TRIP-GND ] Pickup(xCT): 4.00 Time Delay: 0.00 >Active Trip: OFF

Range

OFF, 1 ~ 5

Default OFF

Step

1

If Active Trip = OFF, the feature is not operate. If Active Trip = 2, then phase high current trip is enabled for the second trip operation and every following trip operation.

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5.6. Ground High Current Lockout (50G-2) The EVRC2A has a ground high current lockout element. The ground high current lockout element in the EVRC2A, is set based on CT secondary current as connected to the current inputs. The ground high current lockout element provides a definite time delay versus current. The operating time of ground high current lockout overcurrent element should be set for equal to or faster than the ground high current trip element. The ground high current lockout element is enabled in the Primary, Alternate settings and both PROTECTION ENABLED and GROUND ENABLED in user interface panel. The ground high current lockout is not affected by the cold load pickup scheme. The ground high current lockout element in the following five settings should be enabled for ground high current lockout. PRIMARY SETTING / PROTECTION / H/C LOCKOUT-GND / Function [ H/C LOCKOUT-GND ] >Function: OFF Relays(0-8): OFF Pickup(xCT): 8.00

Range

OFF, TRIP, TR&AR

Default TRIP

Step

~

If function = OFF, the feature is not operational. If function = Trip, the feature is operational. When the feature asserts a TRIP condition, Trip operates. If function = Trip & AR, the feature is operational. When the feature asserts a TRIP & AR condition, it trips and alarms.

PRIMARY SETTING / PROTECTION / H/C LOCKOUT-GND / Relays(0-8) [ H/C LOCKOUT-GND ] Function: OFF >Relays(0-8): OFF Pickup(xCT): 8.00

Range

OFF, 0 ~ 8

Default OFF

Step

1

Selects the required relays to operate when the feature generates a Trip.

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PRIMARY SETTING / PROTECTION / H/C LOCKOUT-GND / Pickup(xCT) [ H/C LOCKOUT-GND ] Function: OFF Relays(0-8): OFF >Pickup(xCT): 8.00

Range

1.00 ~ 20.00

Default 8.00

Step

0.01

Enter the pickup value as a fraction of the source CTs nominal current. The pickup current is the threshold current at which the phase high current lockout element starts timing. For example, if 1000:1 CTs are used and a phase pickup of 8000 amps is required for the high current lockout element, enter 8.00

PRIMARY SETTING / PROTECTION / H/C LOCKOUT-GND / Time Delay [ H/C LOCKOUT-GND ] Relays(0-8): OFF Pickup(xCT): 8.00 >Time Delay: 0.00

Range

0.00 ~ 10.00

Default 0.00

Step

0.01

The Time delay of phase high current trip setting programs a definite time delay for the phase high current trip. If set to zero, phase high current trip operates instantaneously.

PRIMARY SETTING / PROTECTION / H/C LOCKOUT-GND / Active Trip [ H/C LOCKOUT-GND ] Pickup(xCT): 8.00 Time Delay: 0.00 >Active Trip: OFF

Range

OFF, 1 ~ 5

Default OFF

Step

1

If Active Trip = OFF, the feature is not operate. If Active Trip = 2, then phase high current trip is enabled for the second trip operation and every following trip operation.

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5.7. Sensitive Earth Fault (SEF) The sensitive earth fault (SEF) is applicable to systems that have restricted current flow for phase to earth fault. The SEF is not applicable to the case in 4 wire multi-earthed systems. The sensitivity of SEF element for non-earthed systems is dependent upon available fault current and the accuracy of CTs. For SEF element, EVRC2A has the separate SEF terminal on side panel. This input can be connected in series with the provided phase CT’s (standard) or connected to a separate window type ZCT. The SEF element provides a definite time delay versus current . The SEF element is enabled in the Primary, Alternate settings and PROTECTION ENABLED and SEF ENABLED on user interface panel. For user systems, a directional SEF is available. The directional control is polarized by a zero sequence voltage(V0). The CVD or PTs should be connected Wye-grounded. The SEF element in the following three settings should be enabled.

PRIMARY SETTING / PROTECTION / PICKUP CURRENT / S.E.F [PICKUP CURRENT xCT] Phase: 0.50 Ground: 0.25 >S.E.F: OFF

Range

OFF, 0.005~0.160

Default OFF

Step

0.001

Enter the pickup value as a fraction of the source CTs nominal current. The pickup current is the threshold current at which the SEF element starts timing. For example, if 1000:1 CTs are used and a phase pickup of 10 amps is required for sensitive earth fault element, enter 0.010

PRIMARY SETTING / PROTECTION / SEF ELEMENT / Function [ SEF ELEMENT ] >Function: TRIP Relays(0-8): OFF Time Delay: 1.00

Range

OFF, TRIP, TR&AR

Default TRIP

Step

~

If function = OFF, the feature is not operational. If function = Trip, the feature is operational. When the feature asserts a TRIP condition, Trip operates. If function = Trip & AR, the feature is operational. When the feature asserts a TRIP & AR condition, it trips and alarms.

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PRIMARY SETTING / PROTECTION / SEF ELEMENT / Relays(0-8) [ SEF ELEMENT ] Function: TRIP >Relays(0-8): OFF Time Delay: 1.00

Range

OFF, 0 ~ 8

Default OFF

Step

1

Selects the relays required to operate when the feature generates a Trip.

PRIMARY SETTING / PROTECTION / SEF ELEMENT / Time Delay [ SEF ELEMENT ] Function: TRIP Relays(0-8): OFF >Time Delay: 1.00

Range

0.00 ~ 10.00

Default 1.00

Step

0.01

The Time delay of phase high current trip setting programs a definite time delay for the phase high current trip. If set to zero, phase high current trip operates instantaneously.

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5.8. Negative Sequence (Fast/Delay) Time Overcurrent (46) The EVRC2A has two negative sequence time overcurrent elements. The negative sequence element measures the amount of unbalance current in the system. The negative sequence overcurrent element can also be used to detect phase to ground and two phase ground faults. The negative sequence time overcurrent element provides a time delay versus current for tripping using that an inverse time curve characteristic is operated to coordinate, current pickup value, curve type, time dial, time adder, minimum response time setting and reset type. The negative sequence time overcurrent element is enabled in the Primary, Alternate settings and both PROTECTION ENABLED in user interface panel. Multiple time curves and time dials are available for the negative sequence time overcurrent element to closely coordinate with other protection elements in the EVRC2A and other external devices on the distribution system. The Reset type can be either instantaneous or linear. The negative sequence time delay reset mode applies to the ANSI, IEC, ESB, USER curves. The instantaneous mode is used to coordinate with other instantaneous reset devices such as a recloser or other protective equipment on the distribution system. In the instantaneous mode, the time overcurrent element will reset instantaneously when the measured current level drops below the pickup setting for one cycle. If the recloser is closed by pressing the CLOSE button on the front panel, or by an remote control or via SCADA, the negative sequence time overcurrent element is prevented from tripping for a period specified by the Cold load pickup scheme. PRIMARY SETTING / PROTECTION / PICKUP CURRENT / NEG Seq [PICKUP CURRENT xCT] Ground: 0.25 S.E.F: OFF >NEG Seq: OFF

Range

OFF, 0.04 ~ 3.20

Default OFF

Step

0.01

Enter the pickup value as a fraction of the source CTs nominal current. The pickup current is the threshold current at which the phase time overcurrent element starts timing. The dropout threshold is 98% of the pickup threshold curves as a multiple of the source CT. For example, if 1000:1 CTs are used and a phase pickup of 500 amps is required for the phase time overcurrent element, enter 0.50

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PRIMARY SETTING / PROTECTION / NEGATIVE FAST / Function [NEGATIVE FAST] >Function: TRIP Relays(0-8): OFF Curve: ANSI-SI

Range

TRIP, TR&AR

Default TRIP

Step

~

If function = Trip, the feature is operational. When the feature asserts a TRIP condition, Trip operates. If function = Trip & AR, the feature is operational. When the feature asserts a TRIP condition, TRIP and any other selected output relays operate.

PRIMARY SETTING / PROTECTION / NEGATIVE FAST / Relays(0-8) [NEGATIVE FAST] Function: TRIP >Relays(0-8): OFF Curve: ANSI-SI

Range

OFF, 0 ~ 8

Default OFF

Step

1

Selects the relays required to operate when the feature generates a Trip.

PRIMARY SETTING / PROTECTION / NEGATIVE FAST / Curve [NEGATIVE FAST] Function: TRIP Relays(0-8): OFF >Curve: ANSI-SI

Range

ANSI-MI, ANSI-NI, … , KG(165)

Default ANSI-SI

Step

~

Select the desired curve type : ANSI : Moderately, Normally, Very, Extremely, Short Inverse, Definite Time(1s ,10s) IEC : Standard, Very, Extremely, Long, Short Inverse ESB : Normally, Very, Long Very Inverse User programmable curves : U1,U2,U3,U4 McGraw-Edison : Non Standard Curves 37

PRIMARY SETTING / PROTECTION / NEGATIVE FAST / Time Dial [NEGATIVE FAST] Relays(0-8): OFF Curve: ANSI-SI >Time Dial: 0.50

Range

0.05 ~ 15.00

Default 0.50

Step

0.01

A time dial setpoint allows shifting of the selected base curve in the vertical time axis.

The negative sequence delay time overcurrent setting process is very similar the negative sequence fast time overcurrent setting process.

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5.9. Negative Sequence High Current Trip (46(50)-1) The negative sequence high current trip in the EVRC2A is set based on CT secondary current as connected to the current inputs. The negative sequence high current trip element provides a definite time delay versus current. The operating time of negative sequence high current trip element should be set equal to or faster than the negative sequence time overcurrent elements. The negative sequence high current trip element is enabled in the Primary, Alternate settings and PROTECTION on user interface panel. The negative sequence high current trip is not affected by the cold load pickup scheme. The ground high current trip element in the following five settings should be enabled for negative sequence high current trip. PRIMARY SETTING / PROTECTION / H/C TRIP-NEG / Function [ H/C TRIP-NEG ] >Function: OFF Relays(0-8): OFF Pickup(xCT): 4.00

Range

OFF, TRIP, TR&AR

Default TRIP

Step

~

If function = OFF, the feature is not operational. If function = Trip, the feature is operational. When the feature asserts a TRIP condition, Trip operates. If function = Trip & AR, the feature is operational. When the feature asserts a TRIP & AR condition, it trips and alarms.

PRIMARY SETTING / PROTECTION / H/C TRIP-NEG / Relays(0-8) [ H/C TRIP-NEG ] Function: OFF >Relays(0-8): OFF Pickup(xCT): 4.00

Range

OFF, 0 ~ 8

Default OFF

Step

1

Selects the required relays to operate when the feature generates a Trip.

PRIMARY SETTING / PROTECTION / H/C TRIP-NEG / Pickup(xCT) [ H/C TRIP-NEG ] Function: OFF Relays(0-8): OFF >Pickup(xCT): 4.00

Range

1.00 ~ 20.00

Default 4.00

Step

0.01

Enter the pickup value as a fraction of the source CTs nominal current. The pickup current is the threshold current at which the phase high current trip element starts timing. For example, if 1000:1 CTs are used and a phase pickup of 4000 amps is required for the high current trip element, enter 4.00

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PRIMARY SETTING / PROTECTION / H/C TRIP-NEG / Time Delay [ H/C TRIP-NEG ] Relays(0-8): OFF Pickup(xCT): 4.00 >Time Delay: 0.00

Range

0.00 ~ 10.00

Default 0.00

Step

0.01

The Time delay of phase high current trip setting programs a definite time delay for the phase high current trip. If set to zero, phase high current trip operates instantaneously.

PRIMARY SETTING / PROTECTION / H/C TRIP-NEG / Active Trip [ H/C TRIP-NEG ] Pickup(xCT): 4.00 Time Delay: 0.00 >Active Trip: OFF

Range

OFF, 1 ~ 5

Default OFF

Step

1

If Active Trip = OFF, the feature is not operate. If Active Trip = 2, then phase high current trip is enabled for the second trip operation and every following trip operation.

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5.10. Negative Sequence High Current Lockout (46(50)-2) The EVRC2A has a negative sequence high current lockout element. Negative sequence high current lockout element in the EVRC2A is set based on CT secondary current as connected to the current inputs. The negative sequence high current lockout element provides a definite time delay characteristic versus current. The negative sequence high current lockout element should be set equal to or faster than the negative sequence high current trip element. The negative sequence high current lockout element is enabled in the Primary, Alternate settings and both PROTECTION ENABLED and GROUND ENABLED in user interface panel. Negative sequence high current lockout is not affected by the cold load pickup scheme. The negative sequence high current lockout element in the following five settings should be enabled for the negative sequence high current lockout. PRIMARY SETTING / PROTECTION / H/C LOCKOUT-NEG / Function [ H/C LOCKOUT-NEG ] >Function: OFF Relays(0-8): OFF Pickup(xCT): 8.00

Range

OFF, TRIP, TR&AR

Default TRIP

Step

~

If function = OFF, the feature is not operational. If function = Trip, the feature is operational. When the feature asserts a TRIP condition, Trip operates. If function = Trip & AR, the feature is operational. When the feature asserts a TRIP & AR condition, it trips and alarms.

PRIMARY SETTING / PROTECTION / H/C LOCKOUT-NEG / Relays(0-8) [ H/C LOCKOUT-NEG ] Function: OFF >Relays(0-8): OFF Pickup(xCT): 8.00

Range

OFF, 0 ~ 8

Default OFF

Step

1

Selects the required relays to operate when the feature generates a Trip.

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PRIMARY SETTING / PROTECTION / H/C LOCKOUT-NEG / Pickup(xCT) [ H/C LOCKOUT-NEG ] Function: OFF Relays(0-8): OFF >Pickup(xCT): 8.00

Range

1.00 ~ 20.00

Default 8.00

Step

0.01

Enter the pickup value as a fraction of the source CTs nominal current. The pickup current is the threshold current at which the phase high current lockout element starts timing. For example, if 1000:1 CTs are used and a phase pickup of 8000 amps is required for the high current lockout element, enter 8.00

PRIMARY SETTING / PROTECTION / H/C LOCKOUT-NEG / Time Delay [ H/C LOCKOUT-NEG ] Relays(0-8): OFF Pickup(xCT): 8.00 >Time Delay: 0.00

Range

0.00 ~ 10.00

Default 0.00

Step

0.01

The Time delay of phase high current trip setting programs a definite time delay for the phase high current trip. If set to zero, phase high current trip operates instantaneously.

PRIMARY SETTING / PROTECTION / H/C LOCKOUT-NEG / Active Trip [ H/C LOCKOUT-NEG ] Pickup(xCT): 8.00 Time Delay: 0.00 >Active Trip: OFF

Range

OFF, 1 ~ 5

Default OFF

Step

1

If Active Trip = OFF, the feature is not operate. If Active Trip = 2, then phase high current trip is enabled for the second trip operation and every following trip operation.

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5.11. Directional Controls (67) The directional Controls provide time protection in the direction of power flow. The directional Controls are necessary for the protection of multiple feeders, when it has the necessity of finding faults in different directions. The directional controls are composed of phase, neutral, sensitive ground, and negative sequence overcurrent elements. If directional controls are selected, it will determine whether current flow in each phase is in forward or reverse direction, as determined by the connection of the phase CTs, selected Maximum Torque Angle (MTA), voltage and current phasors. To increase security of all directional controls, add one power frequency cycle of intentional delay to prevent incorrect operation. The directional controls have each three settings. The directional controls settings can be different in the Primary and Alternate settings.

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5.11.1. Phase Directional Controls (67P) The positive sequence voltage V1 provides the direction of phase pole in the power system. The phase direction is determined as comparing the positive sequence voltage(V1) to the direction of the positive sequence current(I1). The maximum torque angle is set between ∠0 to ∠359 degree. The factory default value for maximum torque angle has a lead of ∠300 degree over V1. If the polarized voltage drops below minimum polarized voltage, the phase direction control will lose direction and will not trip. Then any fault on the distribution line may trip due to the phase overcurrent element, which is non-directional. The phase direction control can be programmed for non-direction or to provide a trip for current flow in the forward or reverse direction only. following diagram shows the phasor diagram for I1 directional polarization in the complex plane. Polarizing Referance Voltage:

V1

T ro Ze

Typical Fault Angle

orq e Lin ue

I1 x Ma

um im

T

ine eL u orq

Maximum Torque Angle : set 300 degree

a rw Fo

rd

rse ve Re

Figure 5-2. Phasor Diagram for I1 Directional Polarization

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The phase direction control in the following four settings should be enabled. PRIMARY SETTING / PROTECTION / DIRECTION / PHASE DIRECTION / Type [PHASE DIRECTION] >Type: OFF M.T.A: 300 M.P.A: 0.20

Range

OFF, FOR, REV

Default OFF

Step

~

OFF : None direction FOR : Forward direction REV : Reverse direction

PRIMARY SETTING / PROTECTION / DIRECTION / PHASE DIRECTION / M.T.A [PHASE DIRECTION] Type: OFF >M.T.A: 300 M.P.A: 0.20

Range

0 ~ 359

Default 300

Step

1

Enter the Maximum Torque Angle. The Maximum Torque Angle setting determines the range of current direction for the polarizing voltage. For typical distribution systems, the faulted angle of the phase will be approximately ∠30∼∠60 degree

PRIMARY SETTING / PROTECTION / DIRECTION / PHASE DIRECTION / M.P.V [PHASE DIRECTION] Type: OFF M.T.A: 300 >M.P.A: 0.20

Range

0 ~ 1.25 x VT(secondary nominal voltage)

Default 0.20

Step

0.01

Enter the minimum polarizing voltage as a fraction of the secondary nominal voltage.

PRIMARY SETTING/PROTECTION / DIRECTION / PHASE DIRECTION / BLOCK OC [PHASE DIRECTION] M.T.A: 300 M.P.A: 0.20 >BLOCK OC: NO

Range

NO, YES

Default NO

Step

~

The BLOCK OC setting determines the overcurrent tripping conditions when the polarizing voltage drops below minimum polarizing voltage. If BLOCK OC = NO, then tripping by the overcurrent elements will be permitted. If BLOCK OC = YES, then tripping by the overcurrent elements will be blocked.

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5.11.2. Ground Directional Controls (67G) The zero sequence voltage 3V0 provides the direction of ground control in the power system. The ground direction is determined as comparing the zero sequence voltage(3V0) to the direction of the zero sequence current(Ig). The Maximum Torque Angle is set between ∠0 to ∠359 degree. The factory default value for maximum torque angle has a lead of ∠135 degree over 3V0. If the polarized voltage drops below minimum polarized voltage, the ground direction control will lose direction and will not trip. Then any fault on the distribution line may trip due to the ground overcurrent element, which is non-directional. The ground direction control can be programmed to either non-direction or provide a trip for current flow in the forward or reverse direction only. The following diagram shows the phasor diagram for Ig directional polarization in the complex plane.

rq ue

Li n

e

-V0

To

Ig

To

M ax

ue rq

im um

ro Ze

Fault Current

Re ve rs e

Fo

rw ar d

ne Li

Polarizing Referance Voltage:

V0

Figure 5-3. Phasor Diagram for Ig Directional Polarization

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The ground direction control in the following four settings should be enabled. PRIMARY SETTING / PROTECTION / DIRECTION / GROUND DIRECTION / Type [GROUND DIRECTION] >Type: OFF M.T.A: 135 M.P.A: 0.20

Range

OFF, FOR, REV

Default OFF

Step

~

OFF : None direction FOR : Forward direction REV : Reverse direction

PRIMARY SETTING / PROTECTION / DIRECTION / GROUND DIRECTION / M.T.A [GROUND DIRECTION] Type: OFF >M.T.A: 135 M.P.A: 0.20

Range

0 ~ 359

Default 135

Step

1

Enter the maximum torque angle, The maximum torque angle setting determines the range of current direction for the polarized voltage. For system with high-resistance grounding or floating neutrals, the ground maximum torque angle will be approximately ∠135 degree. For system with solidly grounded or resistively grounded the maximum torque angle will be approximately ∠90 degree.

PRIMARY SETTING / PROTECTION / DIRECTION / PHASE DIRECTION / M.P.V [GROUND DIRECTION] Type: OFF M.T.A: 135 >M.P.A: 0.20

Range

0 ~ 1.25 x VT(secondary nominal voltage)

Default 0.20

Step

0.01

Enter the minimum polarizing voltage. For systems with high-resistance grounding or floating neutrals, this M.P.V will be approximately 0.20 x VT. For system with solidly grounded or resistively grounded the M.P.V will be approximately 0.10 x VT.

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PRIMARY SETTING/PROTECTION/DIRECTION/GROUND DIRECTION/BLOCK OC [GROUND DIRECTION] M.T.A: 135 M.P.A: 0.20 >BLOCK OC: NO

Range

NO, YES

Default NO

Step

~

The BLOCK OC setting determines the overcurrent tripping conditions when the polarizing voltage drops below minimum polarizing voltage. If BLOCK OC = NO, then tripping by the overcurrent elements will be permitted. If BLOCK OC = YES, then tripping by the overcurrent elements will be blocked.

The SEF direction control process a very similar method to the ground directional controls.

5.11.3. Negative Sequence Directional Controls (67(46)) The negative sequence voltage V2 provides the direction of negative sequence pole in the power system. The negative sequence direction control is determined as comparing the negative sequence voltage(V2) to the direction of the negative sequence current(I2). The Maximum Torque Angle is set between ∠0 to ∠359 degree. The factory default value for maximum torque angle has a lead of ∠ 135 degree over V2. If the polarized voltage drops below minimum polarized voltage, the negative sequence direction control will lose direction and will not trip. Then any fault on the distribution line may trip due to the negative sequence overcurrent element which is non-directional. The negative sequence direction control can be programmed for non-direction or to provide a trip for current flow in the forward or reverse direction only.

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The following diagram shows the phasor diagram for I2 directional polarization in the complex plane.

To rq ue

Li ne

-V2

To

im um

ro Ze

Fault Current I2

ne Li

M

ax

ue rq Re ve rs e

Fo rw

ar d

Maximum Torque Angle : set 135 degree

Polarizing Referance Voltage:

V2

Figure 5-4. Phasor Diagram for I2 Directional Polarization The negative sequence directional controls in the following four settings should be enabled. PRIMARY SETTING / PROTECTION / DIRECTION / NEG DIRECTION / Type [NEG DIRECTION] >Type: OFF M.T.A: 300 M.P.A: 0.20

Range

OFF, FOR, REV

Default OFF

Step

~

OFF : None direction FOR : Forward direction REV : Reverse direction

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PRIMARY SETTING / PROTECTION / DIRECTION / NEG DIRECTION / M.T.A [NEG DIRECTION] Type: OFF >M.T.A: 300 M.P.A: 0.20

Range

0 ~ 359

Default 300

Step

1

Enter the maximum torque angle. The maximum torque angle setting determines the directional operating current for the polarizing voltage.

PRIMARY SETTING / PROTECTION / DIRECTION / NEG DIRECTION / M.P.V [NEG DIRECTION] Type: OFF M.T.A: 300 >M.P.A: 0.20

Range

0 ~ 1.25 x VT(secondary nominal voltage)

Default 0.20

Step

0.01

Enter the minimum polarizing voltage. For systems with high-resistance grounding or floating neutrals, this M.P.V will be approximately 0.20 x VT. For system with solidly grounded or resistively grounded the M.P.V will be approximately 0.10 x VT.

PRIMARY SETTING / PROTECTION / DIRECTION / NEG DIRECTION / BLOCK OC [NEG DIRECTION] M.T.A: 300 M.P.A: 0.20 >BLOCK OC: NO

Range

NO, YES

Default NO

Step

~

The BLOCK OC setting determines the overcurrent tripping conditions when the polarizing voltage drops below minimum polarizing voltage. If BLOCK OC = NO, then tripping by the overcurrent elements will be permitted. If BLOCK OC = YES, then tripping by the overcurrent elements will be blocked.

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5.12. RECLOSE (79) After a fault has occurred, the Reclose element closes the recloser when the programmed reclose interval time expires. The number of operation lockout setting is programmed one to five, and each reclose shot has its own separate reclose interval timer. If the fault is permanent and the recloser continues to trip and reclose, the Reclose element will continue to increment the operating counter. If this continues to the maximum number of the operating lockout programmed in the Reclose element, the reclose logic lockouts. If the fault is transient, then the reclose logic is reset by the reset logic. The reclosing element can be disabled in the Primary, Alternate settings by one operating lockout or by RECLOSE ENABLED push button on user interface panel. The Reclose Element should be enabled to the following settings. PRIMARY SETTING / PROTECTION / DIRECTION / OPERATIONS / Lockout-PHA [OPERATION] >Lockout-PHA: Lockout-GND: Lockout-SEF:

Range 4 4 4

1~5

Default 4

Step

1

Select the total number of the phase trip operations. This setting is used to change the total number of the phase trip operations.

PRIMARY SETTING / PROTECTION / DIRECTION / OPERATIONS / Lockout-GND [OPERATION] Lockout-PHA: >Lockout-GND: Lockout-SEF:

Range 4 4 4

1~5

Default 4

Step

1

Select the total number of the ground trip operations. This setting is used to change the total number of the ground trip operations.

PRIMARY SETTING / PROTECTION / DIRECTION / OPERATIONS / Lockout-SEF [OPERATION] Lockout-PHA: Lockout-GND: >Lockout-SEF:

Range 4 4 4

1~5

Default 4

Step

1

Select the total number of the SEF trip operations. This setting is used to change the total number of the SEF trip operations

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PRIMARY SETTING / PROTECTION / DIRECTION / OPERATIONS / Lockout-NEG [OPERATION] Lockout-GND: Lockout-SEF: >Lockout-NEG:

Range 4 4 4

1~5

Default 4

Step

1

Select the total number of the negative sequence trip operations. This setting is used to change the total number of the negative sequence trip operations.

PRIMARY SETTING / PROTECTION / DIRECTION / OPERATIONS / Fast Curve-PHA [OPERATION] Lockout-GND: Lockout-SEF: >Fast Curve-PHA:

Range 4 4 2

0~5

Default 2

Step

1

Select the number of the phase fast curve operations. This setting is used to change the number of the phase fast curve operations. The difference between setting [OPERATION] Lockout-PHA and setting [OPERATION] Fast Curve-PHA is the number of remaining phase delay curve operations.

PRIMARY SETTING / PROTECTION / DIRECTION / OPERATIONS / Fast Curve-GND [OPERATION] Lockout-SEF: Fast Curve-PHA: >Fast Curve-GND:

Range 4 2 2

0~5

Default 2

Step

1

Select a number for the ground fast curve operations. This setting is used to change the number of the ground fast curve operations. The difference between setting [OPERATION] Lockout-GND and setting [OPERATION] Fast Curve-GND is the number of remaining ground delay curve operations.

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PRIMARY SETTING / PROTECTION / DIRECTION / OPERATIONS / Fast Curve-NEG [OPERATION] Fast Curve-PHA: Fast Curve-GND: >Fast Curve-NEG:

Range 2 2 2

0~5

Default 2

Step

1

Select a number for the negative sequence fast curve operations. This setting is used to change the number of the negative sequence fast curve operations. The difference between setting [OPERATION] Lockout-NEG and setting [OPERATION] Fast Curve-NEG is the number of remaining negative sequence delay curve operations.

PRIMARY SETTING / PROTECTION / DIRECTION / INTERVALS / Reclose 1 [INTERVALS] >Reclose 1: 0.60 Reclose 2: 2.00 Reclose 3: 15.00

Range

0.50 ~ 600.00

Default 0.60

Step

0.01

This setting is used to change the first reclose interval time between the first trip operation and the close operation.

PRIMARY SETTING / PROTECTION / DIRECTION / INTERVALS / Reclose 2 [INTERVALS] Reclose 1: 0.60 >Reclose 2: 2.00 Reclose 3: 15.00

Range

1.00 ~ 600.00

Default 2.00

Step

0.01

This setting is used to change the first reclose interval time between the first trip operation and the close operation.

PRIMARY SETTING / PROTECTION / DIRECTION / INTERVALS / Reclose 3 [INTERVALS] Reclose 1: 0.60 Reclose 2: 2.00 >Reclose 3: 15.00

Range

1.00 ~ 600.00

Default 15.00

Step

0.01

This setting is used to change the first reclose interval time between the first trip operation and the close operation.

PRIMARY SETTING / PROTECTION / DIRECTION / INTERVALS / Reclose 4 [INTERVALS] Reclose 2: 2.00 Reclose 3: 15.00 >Reclose 4: 15.00

Range

1.00 ~ 600.00

Default 15.00

Step

0.01

This setting is used to change the first reclose interval time between the first trip operation and the close operation.

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PRIMARY SETTING / PROTECTION / DIRECTION / INTERVALS / Reset T(AR) [INTERVALS] Reclose 2: 2.00 Reclose 3: 15.00 >Reset T(AR): 30.00

Range

1.00 ~ 600.00

Default 30.00

Step

0.01

Select Reset time for auto reclose. The Reset time for auto reclose is used for the recloser to automatically reclose. Traditionally, the Reset time for auto reclose setting is used to set time for a delay longer than the incomplete sequence. If any overcurrent elements are picked up, the reset timer is reloaded. Reset timer can only count if all the overcurrent elements are cleared.

PRIMARY SETTING / PROTECTION / DIRECTION / INTERVALS / Reset T(LO) [INTERVALS] Reclose 3: 15.00 Reset T(AR): 30.00 >Reset T(LO): 10.0

Range

1.00 ~ 600.00

Default 10.00

Step

0.01

Select the Reset time for lockout. The auto reclose logic is disabled for a setting time delay after the recloser is manually/remotely closed. This prevents a fault from manual reclosing. This delay must be longer than the trip time delay for any protection not blocked after manual closing. If no overcurrent trip occurs after a manual close and this timer expires, the auto reclose logic automatically resets. Traditionally, the Reset Time from lockout setting is set shorter than the Reset time for auto reclose setting.

PRIMARY SETTING / PROTECTION / DIRECTION / INTERVALS / C/P Wait [INTERVALS] Reset T(AR): 30.00 Reset T(LO): 10.0 >C/P Wait: 60.00

Range

1.00 ~ 600.00

Default 60.00

Step

0.01

Select the close power waiting time. This timer is used to set the close power waiting time delay allowed to reclose. It is activated when the reclose logic is in the reclose cycle state. If this timer expires, the reclose logic is lockouted.

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5.12.1. Lockout The lockout state occurs under any of the following conditions : y

After a fault of distribution systems, the RECLOSE ENABLED LED in user interface panel is not lighted(ON).

y

When the high current lockout has occurred.

y

The recloser is manually closed and a fault occurs before the expiration of the reset time.

y

When recloser is manually opened.

y

After TRIP occurs, the fault current is not removed or the recloser’s 52a contacts do not change status of the recloser opened.

y

The close power waiting time delay has expired.

The Lockout State is cleared when the recloser has been manually closed by local/remote control and the reset time has expired. The following diagram shows the typical full protection sequence containing 2F2D (two fast and two delay) operations followed by lockout.

AMP FAULT CURRENT

(1)

(2)

(3)

(4)

(5)

(6)

(7)

* LOCK-OUT * PICKUP CURRENT NORMAL CURRENT

TIME (1) 1st Trip - 1st TCC

(2) 1st Reclose Interval Time

(3) 2nd Trip - 2nd TCC

(4) 2nd Reclose Interval Time

(5) 3rd Trip - 3rd TCC

(6) 3rd Reclose Interval Time

(7) 4th Trip - 4th TCC Figure 5-5. Protection sequence containing 2F2D operations followed by lockout

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5.12.2. Reset If the faulted current is cleared before the lockout condition, the reclosing sequence automatically reset after passing the reset time interval. If the fault condition occurs again during the reset time, the recloser will operate lockout after the completion of the remaining sequence. The following block diagram shows the reset sequence operation after the 3rd reclosing as the fault current is cleared.

AMP FAULT CURRENT

(1)

(2)

(3)

(4)

(5) AUTO RESET TIME

* RESET * PICKUP CURRENT NOMAL CURRENT

TIME

(1) 1st Trip - 1st TCC

(2) 1st Reclose Interval Time

(3) 2nd Trip - 2nd TCC

(4) 2nd Reclose Interval Time

(5) 3rd Trip - 3rd TCC Figure 5-6. Reset Sequence operation after the 3rd reclosing as the fault current is cleared

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5.13. COLD LOAD PICKUP The cold load pickup feature is operated to prevent TRIP from the overcurrent elements when an inrush current occurs during the manual closing by local/remote control. The setting values of Cold Load Pickup feature for phase, ground, SEF, negative sequence overcurrent elements can be programmed separately. If cold load pickup feature is activated and the Recloser is closed manually by local/remote control, the overcurrent elements are operated considering the cold load pickup feature. EVRC2A can be programmed to prevent the overcurrent elements and to raise the pickup level of time overcurrent elements when a cold load pickup feature is detected. Under normal operating conditions, the actual load on the distribution system is less than the maximum connected load. When the distribution system is closed after a prolonged outage, the inrush current may be above some overcurrent settings. Such the overcurrent elements are operated due to the fast overcurrent elements are disabled and the delay overcurrent elements and SEF element are activated. If the fault of the distribution system occurs, the overcurrent element is operated due to the cold load pickup feature and the recloser will be lockout after one TRIP. The cold load pickup feature is initiated and overcurrent settings are altered when the recloser is opened for an amount of time greater than the outage time. The cold load pickup feature is immediately activated by asserting the cold load pickup current. The overcurrent settings are returned to normal after any phase current is restored to the nominal load, and then a timer of duration equal to the restore minimum time expires.

Restore Minimum Time

Current

Outage Time

Inrrush Current 1

TRIP Cold load Pickup Level Overcurrent Pickup Level Inrrush Current 2

Time

Figure 5-7. The Restore Minimum Time Characteristic

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The cold load pickup feature will be operated by the following Rules; When The cold load pickup feature is selected for ON and the cold load pickup level for overcurrent elements are preset, The cold load pickup feature is activated by the overcurrent higher than the cold load pickup level that is detected during the manual closing by local/remote control. The cold load pickup feature is activated with the delay time overcurrent curve only when the inrush current higher than the cold load pickup level or the fault current comes into existence. If transient current remains below the cold load pickup level and the restore minimum time expires, CLPU sequence is changed to the normal sequence. At this time, the cold load pickup level is restored to the nominal pickup current. When fault current, the sequence will be lockout after one TRIP. If High Current Lockout feature is enabled and fault current is higher than the High Current Lockout setting, High Current Lockout feature will be operated prior to the cold load pickup feature.

Trip Area

Time

Non Trip Area

Delay Curve

Current Overcurrent Pickup Level

Cold load Pickup Level

Figure 5-8. The Cold Load Pickup Characteristic

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The Cold Load Pickup feature in the following settings should be enabled. PRIMARY SETTING / PROTECTION / COLD LOAD PICKUP / Function [ COLD LOAD PICKUP ] >Function: TRIP Relays(0-8): OFF PHA(xCT): 2.00

Range

OFF, TRIP, TR&AR

Default TRIP

Step

~

If function = OFF, the feature is not operational. If function = Trip, the feature is operational. If function = Trip & AR, the feature is operational. When the feature asserts a TRIP & AR condition, it trips and alarms.

PRIMARY SETTING / PROTECTION / COLD LOAD PICKUP / Relays(0-8) [ COLD LOAD PICKUP ] Function: TRIP >Relays(0-8): OFF PHA(xCT): 2.00

Range

OFF, 0 ~ 8

Default OFF

Step

1

Selects the relays required to operate when the feature generates a Trip.

PRIMARY SETTING / PROTECTION / COLD LOAD PICKUP / PHA(xCT) [ COLD LOAD PICKUP ] Function: TRIP Relays(0-8): OFF >PHA(xCT): 2.00

Range

1.00 ~ 20.00

Default 2.00

Step

0.01

Selects the raised pickup level for the phase overcurrent element while cold load pickup feature is activated.

PRIMARY SETTING / PROTECTION / COLD LOAD PICKUP / GND(xCT) [ COLD LOAD PICKUP ] Relays(0-8): OFF PHA(xCT): 2.00 >GND(xCT): 2.00

Range

1.00 ~ 20.00

Default 2.00

Step

0.01

Selects the raised pickup level for the ground overcurrent element while cold load pickup feature is activated.

PRIMARY SETTING / PROTECTION / COLD LOAD PICKUP / SEF(xCT) [ COLD LOAD PICKUP ] PHA(xCT): 2.00 GND(xCT): 2.00 >SEF(xCT): 2.00

Range

1.00 ~ 20.00

Default 2.00

Step

0.01

Selects the raised pickup level for the SEF overcurrent element while cold load pickup feature is activated.

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PRIMARY SETTING / PROTECTION / COLD LOAD PICKUP / NEG(xCT) [ COLD LOAD PICKUP ] GND(xCT): 2.00 SEF(xCT): 2.00 >NEG(xCT): 2.00

Range

1.00 ~ 20.00

Default 2.00

Step

0.01

Selects the raised pickup level for the negative sequence overcurrent element while cold load pickup feature is activated.

PRIMARY SETTING / PROTECTION / COLD LOAD PICKUP / Outage Time [ COLD LOAD PICKUP ] SEF(xCT): 2.00 NEG(xCT): 2.00 >Outage Time: 10.0

Range

0.00 ~ 600.00

Default 10.0

Step

0.01

Select the outage time required for a open of recloser to be considered cold.

PRIMARY SETTING / PROTECTION / COLD LOAD PICKUP / RMT Time [ COLD LOAD PICKUP ] NEG(xCT): 2.00 Outage Time: 10.0 >RMT Time: 5.00

Range

0.00 ~ 600.00

Default 5.00

Step

0.01

Select the restore minimum time required for the inrush load. The Restore Minimum Time have to raised pickup levels for overcurrent detection from cold load pickup value back to nominal pickup level.

PRIMARY SETTING / PROTECTION / COLD LOAD PICKUP / RMT Func-PHA [ COLD LOAD PICKUP ] Outage Time: 10.0 RMT Time: 5.00 >RMT Func-PHA: ON

Range

OFF, ON

Default ON

Step

~

When the cold load pickup is active and RMT Func-PHA = ON, the raised phase pickup level for phase overcurrent element is restored the nominal pickup level if the restore minimum time expires. If the cold load pickup is active and RMT Func-PHA = OFF, the raised phase pickup level for phase overcurrent element is restored only the nominal pickup level when the outage time expires.

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PRIMARY SETTING / PROTECTION / COLD LOAD PICKUP / RMT Func-GND [ COLD LOAD PICKUP ] RMT Time: 5.00 RMT Func-PHA: ON >RMT Func-GND: ON

Range

OFF, ON

Default ON

Step

~

When the cold load pickup is active and RMT Func-GND = ON, the raised ground pickup level for ground overcurrent element is restored the nominal pickup level if the restore minimum time expires. If the cold load pickup is active and RMT Func-GND = OFF, the raised ground pickup level for ground overcurrent element is restored only the nominal pickup level when the outage time expires.

PRIMARY SETTING / PROTECTION / COLD LOAD PICKUP / RMT Func-SEF [ COLD LOAD PICKUP ] RMT Func-PHA: ON RMT Func-GND: ON >RMT Func-SEF: ON

Range

OFF, ON

Default ON

Step

~

When the cold load pickup is active and RMT Func-SEF = ON, the raised SEF pickup level for SEF overcurrent element is restored the nominal pickup level if the restore minimum time expires. If the cold load pickup is active and RMT Func-SEF = OFF, the raised SEF pickup level for SEF overcurrent element is restored only the nominal pickup level when the outage time expires.

PRIMARY SETTING / PROTECTION / COLD LOAD PICKUP / RMT Func-NEG [ COLD LOAD PICKUP ] RMT Func-GND: ON RMT Func-SEF: ON >RMT Func-NEG: ON

Range

OFF, ON

Default ON

Step

~

When the cold load pickup is active and RMT Func-NEG = ON, the raised negative sequence(I2) pickup level for I2 overcurrent element is restored the nominal pickup level if the restore minimum time expires. If the cold load pickup is active and RMT Func-NEG = OFF, the raised I2 pickup level for I2 overcurrent element is restored only the nominal pickup level when the outage time expires.

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PRIMARY SETTING / PROTECTION / COLD LOAD PICKUP / Reset Time [ COLD LOAD PICKUP ] RMT Func-SEF: ON RMT Func-NEG: ON >Reset Time: 0.60

Range

0.00 ~ 600.00

Default 0.60

Step

0.01

Select the cold load reset time required for the inrush load. If the cold load currents drops below nominal pickup levels, the cold load pickup feature is returned the normal sequence when the cold load reset time expires.

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5.14. SEQUENCE COORDINATION When several Reclosers are connected in series to protect distribution systems, EVRC2A contains Sequence Coordination feature which can prevent the simultaneous trip operations in both of Backup and Down-line Reclosers due to phase/ground fault. Sequence Coordination feature is activated only if one out of several Down-line Reclosers connected to one Back-up Recloser detects a fault current. The following rules should be kept to activate Sequence Coordination feature. 1) The same characteristics of fast and delay operations in the total number of the trip operations and identical basic Time Current Curves should be set for all Reclosers connected in series. 2) The identical reclose interval time should be set for all Reclosers in series. 3) To coordinate the protection characteristics, an additional delay operation time (at least 100 ms) should be applied to the Time Current Curve characteristics of Back-up Recloser, not to those of Down-line Reclosers. 4) The reset time of Back-up Recloser should be set longer than any reclose interval time of all Down-line Reclosers. This setting will prevent the reset operation of Back-up Recloser during the reclose operation of Down-lines. The Sequence Coordination feature should be enabled to the following settings. PRIMARY SETTING / PROTECTION / OTHER ELEMENT / Seq' Coordi' [ OTHER ELEMENT ] >Seq’ Coordi’: OFF L.O Priority: GND F/I Reset: AUTO

Range

OFF, ON

Default OFF

Step

~

If function = OFF, the feature is not operational. If function = ON, the feature is operational.

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As shown in “Figure 5-9. Sequence Coordination Operation Block Diagram”, if Sequence Coordination feature at Back-up Recloser is enabled and a phase/ground fault occurs in distribution systems, the Back-up Recloser operates timing counter by overcurrent elements. During the count at the Back-up Recloser, if the distribution system is restored to normal by TRIP with Down-line Recloser , the number of the trip operations of Back-up Recloser is increased one step. Back-up Recloser performs trip operation instead of activating Sequence Coordination feature at the last sequence of the full sequence. If Auto Reclose switch is set to one TRIP, Sequence Coordination function can not be operated.

Increase Trip Counter without Trip

Starting Reset Time Counter Close Back Up

EVR 1

Down line

EVR 2

Open

Close Lockout Status Open

Faulted

Time

Figure 5-9. Sequence Coordination Operation Block Diagram

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5.15. TIME OVERCURRENT CURVES The EVRC2A is equipped Standard ANSI/IEEE curves, IEC curves, ESB curves , user-defined curves and all 37 non standard recloser curves are available. A Configuration setting determines whether elements set to use ANSI/IEEE curves, IEC curves, ESB curves, user-defined curves reset instantaneously, or corresponding with electromechanical. The operation times and reset times refer to ANSI/IEEE C37.112 and IEC 255-3. The operation times and reset times are defined as follows : ANSI/IEEE Trip Time(Sec) = TD × (α / (Mβ-1) + γ) IEC Trip Time(Sec) = TD × (α / (Mβ-1)) ESB Trip Time(Sec) = TD × (α / (Mβ-1) + γ) USER-DEFINED Trip Time(Sec) = TD × (α / (Mβ-1) + γ) Reset Time(Sec) = TD × (Rt / (1-M2)) Table 5-2. Curve Factor TD

Time dial

α, β, γ

Characteristic constant

M

Multiples of pickup current

Rt

Reset characteristic constant

“Recloser clearing time curves” are used when rated voltage of recloser is 15㎸ or 27㎸, otherwise which added 30㎳(±4㎳) are used when it is 38㎸.

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Related Setting Menu 1) USER CURVE 1 PRIMARY SETTING / PROTECTION / USER CURVE SET / USER CURVE 1 / Factor a [USER CURVE 1] >Factor a: 59.5000 Factor b: 2.0000 Factor r: 1.8000

Range

0.0000 ~ 150.9999

Default 59.5000

Step

0.0001

User defined curve factor α

PRIMARY SETTING / PROTECTION / USER CURVE SET / USER CURVE 1 / Factor b [USER CURVE 1] Factor a: 59.5000 >Factor b: 2.0000 Factor r: 1.8000

Range

0.0200 ~ 150.9999

Default 2.0000

Step

0.0001

User defined curve factor β

PRIMARY SETTING / PROTECTION / USER CURVE SET / USER CURVE 1 / Factor r [USER CURVE 1] Factor a: 59.5000 Factor b: 2.0000 >Factor r: 1.8000

Range

0.0000 ~ 150.9999

Default 1.8000

Step

0.0001

User defined curve factor γ

PRIMARY SETTING / PROTECTION / USER CURVE SET / USER CURVE 1 / Factor rt [USER CURVE 1] Factor b: 2.0000 Factor r: 1.8000 >Factor rt: 59.5000

Range

0.0000 ~ 150.9999

Default 59.5000

Step

User defined curve factor rt

2) USER CURVE 2, 3, 4 : USER CURVE 2 ~ 4, the same as USER CURVE 1 above

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Standard Curve Coefficients Table 5-3. ANSI/IEEE Curves

α

β

γ

Rt

Moderately Inverse

0.0107

0.020

0.0231

1.0700

Normally Inverse

5.9500

2.000

0.18

5.9500

Very Inverse

3.985

2.000

0.095

3.985

Extremely Inverse

5.9100

2.000

0.0345

5.9100

Short Time Inverse

3.56e-3

0.02

1.95e-2

0.356

Short Time Very Inverse

1.9925

2.000

0.0475

1.992

Curves

α

β

γ

Rt

Standard Inverse

0.1400

0.0200

0.0

9.700

Very Inverse

13.500

1.000

0.0

13.500

Extremely Inverse

80.000

2.000

0.0

80.000

Long Time Inverse

135.000

1.000

0.0

135.00

Short Time Inverse

0.0500

0.0400

0.0

0.500

Curves

α

β

γ

Rt

Standard Inverse

0.011

0.02

0.042

9.000

Very Inverse

3.985

1.95

0.1084

3.985

Long Time Very Inverse

15.94

1.95

0.4336

15.94

Curves

α

β

γ

Rt

User1

59.5000

2.0000

1.8000

59.5000

User2

39.8500

2.0000

0.9500

39.8500

User3

59.1000

2.0000

0.3450

59.1000

User4

5.6700

2.0000

0.0352

5.6700

Table 5-4. IEC

Table 5-5. ESB

Table 5-6. User Defined

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Table 5-7. Definite Time Curves

α

β

γ

Rt

Definite Time 1sec

0.0

-

1.0

1.0

Definite Time 10sec

0.0

-

10.0

10.0

Table 5-8. Non Standard Curves McGraw-Edison recloser curves Phase

102

Ground

Old

New

Old

New

A

101

1

102

B

117

2

135

C

133

3

140

D

116

4

106

E

132

5

114

F

163

6

136

H

122

7

152

J

164

8

113

KP

162

8*

111

L

107

9

131

M

118

11

141

N

104

13

142

P

115

14

119

R

105

15

112

T

161

16

139

V

137

17

103

W

138

18

151

Y

120

KG

165

Z

134

-

-

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100 90 80 70 60

8k 9k 10k

7k

6k

5k

4k

3k

2k

800 900 1k

700

600

500

400

300

200

100

1) ANSI/IEEE Moderately Inverse Curves

100 90 80 70 60

RECLOSER CLEARING TIME CURVE : ANSI MODERATELY INVERSE CURVES ARE AVERAGE CLEARING TIME VARIATIONS ± 5% OR 0.01 SECONDS

50 40

50 40

30

30

20

20

10 9 8 7 6

10 9 8 7 6

5

5

4

4

3

3

15.00 13.00 11.00

2

9.00 7.00 1 0.9 0.8 0.7 0.6

1 0.9 0.8 0.7 0.6

5.00 4.00 3.00

0.5

0.5

0.4

0.4

2.00 0.3

0.3

0.2

0.2

1.00

0.1 0.09 0.08 0.07 0.06

0.1 0.09 0.08 0.07 0.06

0.05

8k 9k 10k

7k

6k

5k

4k

3k

0.01 2k

0.01 800 900 1k

0.02

700

0.02

600

0.03

500

0.03

400

0.04

300

0.05

0.04

200

0.05

100

TIME(SECONDS)

2

PERCENTAGE OF PICKUP CURRENT

Figure 5-10. ANSI/IEEE Moderately Inverse Curves

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100 90 80 70 60

7k

6k

5k

4k

8k 9k 10k 100 90 80 70 60

RECLOSER CLEARING TIME CURVE : ANSI NORMALLY INVERSE CURVES ARE AVERAGE CLEARING TIME VARIATIONS ± 5% OR 0.01 SECONDS

50 40

50 40

30

30

20

20

10 9 8 7 6

10 9 8 7 6

5

5

4

4

3

3

15.00 13.00 11.00

2

TIME(SECONDS)

3k

2k

800 900 1k

700

600

500

400

300

200

100

2) ANSI/IEEE Normally Inverse Curves

2

9.00 7.00 1 0.9 0.8 0.7 0.6

1 0.9 0.8 0.7 0.6

5.00 4.00 3.00

0.5 0.4

0.5 0.4

2.00

0.3

0.3

0.2

0.2

1.00

0.1 0.09 0.08 0.07 0.06

0.1 0.09 0.08 0.07 0.06

0.50

PERCENTAGE OF PICKUP CURRENT

Figure 5-11. ANSI/IEEE Normally Inverse Curves

104

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0.04

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0.05

0.04

100

0.05

RECLOSER CONTROL EVRC2A

http://www.entecene.co.kr

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800 900 1k

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3) ANSI/IEEE Very Inverse Curves

100 90 80 70 60

RECLOSER CLEARING TIME CURVE : ANSI VERY INVERSE CURVES ARE AVERAGE CLEARING TIME VARIATIONS ± 5% OR 0.01 SECONDS

50 40

50 40

30

30

20

20

10 9 8 7 6

10 9 8 7 6

5

5

4

4

3

3

2

15.00 13.00 11.00

1 0.9 0.8 0.7 0.6

1 0.9 0.8 0.7 0.6

9.00 7.00

0.5

5.00

0.5

0.4

4.00

0.4

0.3

3.00

0.3

0.2

2.00

0.2

0.1 0.09 0.08 0.07 0.06

1.00

0.1 0.09 0.08 0.07 0.06

0.05

0.50

0.05

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600

0.02

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400

0.03

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0.04

200

0.04

100

TIME(SECONDS)

2

PERCENTAGE OF PICKUP CURRENT

Figure 5-12. ANSI/IEEE Very Inverse Curves

ENHANCED TECHNOLOGY

105

RECLOSER CONTROL EVRC2A

http://www.entecene.co.kr

100 90 80 70 60

7k

6k

5k

4k

3k

2k

8k 9k 10k 100 90 80 70 60

RECLOSER CLEARING TIME CURVE : ANSI EXTREMELY INVERSE CURVES ARE AVERAGE CLEARING TIME VARIATIONS ± 5% OR 0.01 SECONDS

50 40

TIME(SECONDS)

800 900 1k

700

600

500

400

300

200

100

4) ANSI/IEEE Extremely Inverse Curves

50 40

30

30

20

20

10 9 8 7 6

10 9 8 7 6

5

5

4

4

3

3

2

2

1 0.9 0.8 0.7 0.6

15.00

1 0.9 0.8 0.7 0.6

0.5

13.00

0.5

11.00

0.4

0.4

9.00 0.3

0.3

7.00

0.2

0.2

5.00 4.00 3.00

0.1 0.09 0.08 0.07 0.06

0.1 0.09 0.08 0.07 0.06

2.00

0.05

0.05

1.00

0.04

0.04

0.03

0.03

0.02

0.02

0.50

PERCENTAGE OF PICKUP CURRENT

Figure 5-13. ANSI/IEEE Extremely Inverse Curves

106

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0.01 100

0.01

RECLOSER CONTROL EVRC2A

http://www.entecene.co.kr

100 90 80 70 60

7k

6k

5k

4k

3k

2k

8k 9k 10k 100 90 80 70 60

RECLOSER CLEARING TIME CURVE : ANSI SHORT TIME INVERSE CURVES ARE AVERAGE CLEARING TIME VARIATIONS ± 5% OR 0.01 SECONDS

50 40

50 40

30

30

20

20

10 9 8 7 6

10 9 8 7 6

5

5

4

4

3

3

2

2

1 0.9 0.8 0.7 0.6

15.00 13.00 9.00

1 0.9 0.8 0.7 0.6

0.5

7.00

0.5

11.00

0.4

0.4

5.00 0.3

0.3

4.00 3.00

0.2

0.2

2.00 0.1 0.09 0.08 0.07 0.06

0.1 0.09 0.08 0.07 0.06

1.00

0.05

0.05

0.04

0.04

0.50

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0.01 500

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400

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200

0.03

100

TIME(SECONDS)

800 900 1k

700

600

500

400

300

200

100

5) ANSI/IEEE Short Time Inverse Curves

PERCENTAGE OF PICKUP CURRENT

Figure 5-14. ANSI/IEEE Short Time Inverse Curves

ENHANCED TECHNOLOGY

107

RECLOSER CONTROL EVRC2A

http://www.entecene.co.kr

100 90 80 70 60

8k 9k 10k

6k

5k

4k

3k

2k

7k

100 90 80 70 60

RECLOSER CLEARING TIME CURVE : ANSI SHOTR TIME VERY INVERSE CURVES ARE AVERAGE CLEARING TIME VARIATIONS ± 5% OR 0.01 SECONDS

50 40

TIME(SECONDS)

800 900 1k

700

600

500

400

300

200

100

6) ANSI/IEEE Short Time Very Inverse Curves

50 40

30

30

20

20

10 9 8 7 6

10 9 8 7 6

5

5

4

4

3

3

2

2

1 0.9 0.8 0.7 0.6

1 0.9 0.8 0.7 0.6

15.00 13.00 11.00

0.5

0.5

9.00

0.4

0.4

7.00 0.3

0.3

5.00 0.2

0.2

4.00 3.00

0.1 0.09 0.08 0.07 0.06

2.00

0.1 0.09 0.08 0.07 0.06

0.05

1.00

0.05

0.04

0.04

0.03

0.03

0.50

PERCENTAGE OF PICKUP CURRENT

Figure 5-15. ANSI/IEEE Short Time Very Inverse Curves

108

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0.01 200

0.02

100

0.02

RECLOSER CONTROL EVRC2A

http://www.entecene.co.kr

100 90 80 70 60

7k

6k

5k

8k 9k 10k 100 90 80 70 60

RECLOSER CLEARING TIME CURVE : IEC STANDARD INVERSE CURVES ARE AVERAGE CLEARING TIME VARIATIONS ± 5% OR 0.01 SECONDS

50 40

50 40

30

30

20

20

10 9 8 7 6

10 9 8 7 6

5

5

4

4

3

3

2

2

1 0.8 0.7 0.6 0.5

1 0.9 0.8 0.7 0.6

1 0.9 0.8 0.7 0.6

0.4 0.3

0.5

0.5

0.4

0.4

0.2

0.3

0.3

0.2

0.1 0.09 0.08 0.07 0.06

0.1

0.2

0.05

0.1 0.09 0.08 0.07 0.06

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0.01 800 900 1k

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700

0.02

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300

0.05

0.04

200

0.05

100

TIME(SECONDS)

4k

3k

2k

800 900 1k

700

600

500

400

300

200

100

7) IEC Standard Inverse Curves

PERCENTAGE OF PICKUP CURRENT

Figure 5-16. IEC Standard Inverse Curves

ENHANCED TECHNOLOGY

109

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6k

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900 1k

8k 9k 10k 100 90 80 70 60

RECLOSER CLEARING TIME CURVE : IEC VERY INVERSE CURVES ARE AVERAGE CLEARING TIME VARIATIONS ± 5% OR 0.01 SECONDS

50 40

TIME(SECONDS)

800

700

600

500

400

300

200

100

8) IEC Very Inverse Curves

50 40

30

30

20

20

10 9 8 7 6

10 9 8 7 6

5

5

4

4

3

3

2

2

1 0.9 0.8 0.7 0.6

1 0.9 0.8 0.7 0.6

0.5

0.5

1.00

0.4

0.4

0.8 0.7 0.6 0.5

0.3

0.3

0.2

0.2

0.4 0.3 0.1 0.09 0.08 0.07

0.1 0.09 0.08 0.07

0.2

0.06

0.06

0.05

0.05

0.1

0.04

0.04

0.03

0.03

0.05

PERCENTAGE OF PICKUP CURRENT

Figure 5-17. IEC Very Inverse Curves

110

ENHANCED TECHNOLOGY

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0.01 200

0.02

100

0.02

RECLOSER CONTROL EVRC2A

http://www.entecene.co.kr

100 90 80 70 60

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6k

5k

4k

3k

2k

8k 9k 10k 100 90 80 70 60

RECLOSER CLEARING TIME CURVE : IEC EXTREMELY INVERSE CURVES ARE AVERAGE CLEARING TIME VARIATIONS ± 5% OR 0.01 SECONDS

50 40

50 40

30

30

20

20

10 9 8 7 6

10 9 8 7 6

5

5

4

4

3

3

2

2

1 0.9 0.8 0.7 0.6

1 0.9 0.8 0.7 0.6

0.5

0.5

0.4

0.4

0.3

0.3

0.2

0.2

0.1 0.09 0.08 0.07 0.06

0.1 0.09 0.08 0.07 0.06

1.00

0.05

0. 8 0. 7 0.6

0.04

0.5

0.05 0.04

0. 4 0.03

0.03

0.3 0.02

0.02

0. 2 0.1 0.05

8k 9k 10k

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500

400

300

0.01 200

0.01 100

TIME(SECONDS)

800 900 1k

700

600

500

400

300

200

100

9) IEC Extremely Inverse Curves

PERCENTAGE OF PICKUP CURRENT

Figure 5-18. IEC Extremely Inverse Curves

ENHANCED TECHNOLOGY

111

RECLOSER CONTROL EVRC2A

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800 900 1k

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10) IEC Long Time Inverse Curves

100 90 80 70 60

RECLOSER CLEARING TIME CURVE : IEC LONG TIME VERY INVERSE CURVES ARE AVERAGE CLEARING TIME VARIATIONS ± 5% OR 0.01 SECONDS

50 40

50 40

30

30

20

20

10 9 8 7 6

10 9 8 7 6

5

5

1.00

4

4

0.8 0. 7 0. 6

3

3

0. 5

TIME(SECONDS)

2

2

0. 4 0. 3 1 0.9 0.8 0.7 0.6

1 0.9 0.8 0.7 0.6

0.2

0.5

0.5

0.1 0.4

0.4

0.3

0.3

0.05

PERCENTAGE OF PICKUP CURRENT

Figure 5-19. IEC Long Time Inverse Curves

112

ENHANCED TECHNOLOGY

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700

0.04

600

0.05

0.04

500

0.05

400

0.1 0.09 0.08 0.07 0.06

300

0.1 0.09 0.08 0.07 0.06

200

0.2

100

0.2

RECLOSER CONTROL EVRC2A

http://www.entecene.co.kr

100 90 80 70 60

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6k

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4k

3k

2k

8k 9k 10k 100 90 80 70 60

RECLOSER CLEARING TIME CURVE : IEC SHORT TIME INVERSE CURVES ARE AVERAGE CLEARING TIME VARIATIONS ± 5% OR 0.01 SECONDS

50 40

50 40

30

30

20

20

10 9 8 7 6

10 9 8 7 6

5

5

4

4

3

3

2

2

1 0.9 0.8 0.7 0.6

1 0.9 0.8 0.7 0.6

0.5

0.5

0.4

0.4

1.00

0.3

0.3

0.8 0.7 0.6

0.2

0.2

0.5 0.4 0.1 0.09 0.08 0.07 0.06

0.1 0.09 0.08 0.07 0.06

0.3

0.2

0.05

0.05

0.04

0.04

0.1 0.03

0.03

0.02

0.02

0.05

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700

600

500

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300

0.01 200

0.01

100

TIME(SECONDS)

800 900 1k

700

600

500

400

300

200

100

11) IEC Short Time Inverse Curves

PERCENTAGE OF PICKUP CURRENT

Figure 5-20. IEC Short Time Inverse Curves

ENHANCED TECHNOLOGY

113

RECLOSER CONTROL EVRC2A

http://www.entecene.co.kr

100 90 80 70

8k 9k 10k

6k

5k

4k

7k

100 90 80 70

RECLOSER CLEARING TIME CURVE : ESB INVERSE CURVES ARE AVERAGE CLEARING TIME VARIATIONS ± 5% OR 0.01 SECONDS

60 50 40

60 50 40

30

30

20

20

10 9 8 7 6

10 9 8 7 6

5

5

4

4

3

3

15.00 13.00 11.00

2

TIME(SECONDS)

3k

2k

800 900 1k

700

600

500

400

300

200

100

12) ESB Inverse Curves

2

9.00 7.00 1 0.9 0.8 0.7 0.6

1 0.9 0.8 0.7 0.6

5.00 4.00 3.00

0.5

0.5

0.4

0.4

2.00

0.3

0.3

0.2

1.00

0.2

0.1 0.09 0.08 0.07 0.06

0.50

0.1 0.09 0.08 0.07 0.06

PERCENTAGE OF PICKUP CURRENT

Figure 5-21. ESB Inverse Curves

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0.02

600

0.02

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0.03

400

0.03

300

0.04

200

0.05

0.04

100

0.05

RECLOSER CONTROL EVRC2A

http://www.entecene.co.kr

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800 900 1k

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100

13) ESB Very Inverse Curves

100 90 80 70 60

RECLOSER CLEARING TIME CURVE : ESB VERY INVERSE CURVES ARE AVERAGE CLEARING TIME VARIATIONS ± 5% 0.01 SECONDS

50 40

50 40

30

30

20

20

10 9 8 7 6

10 9 8 7 6

5

5

4

4

3

3

2

15.00 13.00 11.00 1 0.9 0.8 0.7 0.6

1 0.9 0.8 0.7 0.6

9.00 7.00 5.00

0.5

0.5

4.00 0.4

0.4

3.00 0.3

0.3

2.00 0.2

0.2

1.00 0.1 0.09 0.08 0.07 0.06

0.1 0.09 0.08 0.07 0.06

0.05

0.05

0.05

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0.01 800 900 1k

0.01 700

0.02

600

0.02

500

0.03

400

0.03

300

0.04

200

0.04

100

TIME(SECONDS)

2

PERCENTAGE OF PICKUP CURRENT

Figure 5-22. ESB Very Inverse Curves

ENHANCED TECHNOLOGY

115

RECLOSER CONTROL EVRC2A

http://www.entecene.co.kr

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800 900 1k

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14) ESB Long Time Very Inverse Curves

100 90 80 70 60

RECLOSER CLEARING TIME CURVE : ESB LONG TIME VERY INVERSE CURVES ARE AVERAGE CLEARING TIME VARIATIONS ± 5% OR 0.01 SECONDS

50 40

50 40

30

30

20

20

10 9 8 7 6

10 9 8 7 6

15.00 13.00

5

11.00

5

4

9.00

4

3

7.00

3

5.00

TIME(SECONDS)

2

2

4.00 3.00 1 0.9 0.8 0.7 0.6

1 0.9 0.8 0.7 0.6

2.00

0.5

0.5

1.00 0.4

0.4

0.3

0.3

0.50

PERCENTAGE OF PICKUP CURRENT

Figure 5-23. ESB Long Time Very Inverse Curves

116

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0.1 0.09 0.08 0.07 0.06

300

0.1 0.09 0.08 0.07 0.06

200

0.2

100

0.2

RECLOSER CONTROL EVRC2A

http://www.entecene.co.kr

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6k

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4k

8k 9k 10k 100 90 80 70 60

RECLOSER CLEARING TIME CURVE : D1, D2 CURVES ARE AVERAGE CLEARING TIME VARIATIONS ± 5% OR 0.01 SECONDS

50 40

50 40

30

30

20

20

10 9 8 7 6

10 9 8 7 6

D2

5

5

4

4

3

3

2

2

1 0.9 0.8 0.7 0.6

1 0.9 0.8 0.7 0.6

D1

0.02

0.01

0.01 8k 9k 10k

0.02

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0.03

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0.04

3k

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2k

0.1 0.09 0.08 0.07 0.06

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0.1 0.09 0.08 0.07 0.06

700

0.2

600

0.2

500

0.3

400

0.4

0.3

300

0.5

0.4

200

0.5

100

TIME(SECONDS)

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700

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400

300

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100

15) Definite Time Curves (D1, D2)

PERCENTAGE OF PICKUP CURRENT

Figure 5-24. Definite Time Curves (D1, D2)

ENHANCED TECHNOLOGY

117

RECLOSER CONTROL EVRC2A

http://www.entecene.co.kr

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6k

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8k 9k 10k 100 90 80 70 60

RECLOSER CLEARING TIME CURVE : A, B, C, D, E CURVES ARE AVERAGE CLEARING TIME VARIATIONS ± 5% OR 0.01 SECONDS

50 40

TIME(SECONDS)

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500

400

300

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100

16) Non Standard Curves (A, B, C, D, E)

50 40

30

30

20

20

10 9 8 7 6

10 9 8 7 6

5

5

4

4

3

3

2

2

1 0.9 0.8 0.7 0.6

1 0.9 0.8 0.7 0.6

0.5

0.5

0.4

0.4

0.3

0.3

0.2

0.2

0.1 0.09 0.08 0.07 0.06

0.1 0.09 0.08 0.07 0.06

C

D

B E

0.05

0.05

A

PERCENTAGE OF PICKUP CURRENT

Figure 5-25. Non Standard Curves (A, B, C, D, E)

118

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0.04

RECLOSER CONTROL EVRC2A

http://www.entecene.co.kr

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100 90 80 70 60

RECLOSER CLEARING TIME CURVE : KP, L, M, N CURVES ARE AVERAGE CLEARING TIME VARIATIONS ±5% OR 0.01 SECONDS

50 40

50 40

30

30

20

20

10 9 8 7 6

10 9 8 7 6

5

5

4

4

3

3

2

2

1 0.9 0.8 0.7 0.6

1 0.9 0.8 0.7 0.6

0.5

0.5

0.4

0.4

0.3

0.3

0.2

0.2

KP 0.1 0.09 0.08 0.07 0.06

0.1 0.09 0.08 0.07 0.06

L M N

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TIME(SECONDS)

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100

17) Non Standard Curves (KP, L, M, N)

PERCENTAGE OF PICKUP CURRENT

Figure 5-26. Non Standard Curves (KP, L, M, N)

ENHANCED TECHNOLOGY

119

RECLOSER CONTROL EVRC2A

http://www.entecene.co.kr

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40

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8k 9k 10k 50 40

30

30

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10 9 8 7 6

10 9 8 7 6

5

5

4

4

3

3

2

2

1 0.9 0.8 0.7 0.6

1 0.9 0.8 0.7 0.6

V

0.5

0.5

0.4

0.4

0.3

0.3

0.2

0.2

T

0.1 0.09 0.08 0.07 0.06

0.1 0.09 0.08 0.07 0.06

R P

0.05

0.05

Figure 5-27. Non Standard Curves (P, R, T, V)

ENHANCED TECHNOLOGY

8k 9k 10k

7k

6k

5k

4k

3k

2k

800 900 1k

0.01

700

0.01

600

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PERCENTAGE OF PICKUP CURRENT

120

100 90 80 70 60

RECLOSER CLEARING TIME CURVE : P, R, T, V CURVES ARE AVERAGE CLEARING TIME VARIATIONS ± 5% OR 0.01 SECONDS

50

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18) Non Standard Curves (P, R, T, V)

RECLOSER CONTROL EVRC2A

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100 90 80 70 60

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4k

3k

2k

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RECLOSER CLEARING TIME CURVE : W, Y, Z CURVES ARE AVERAGE CLEARING TIME VARIATIONS ± 5% OR 0.01 SECONDS

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10 9 8 7 6

10 9 8 7 6

5

5

4

4

3

3

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2

1 0.9 0.8 0.7 0.6

1 0.9 0.8 0.7 0.6

0.5

0.5

Z 0.4

0.4

0.3

0.3

W 0.2

0.2

Y

8k 9k 10k

7k

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5k

0.01 4k

0.01 3k

0.02

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800 900 1k

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TIME(SECONDS)

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400

300

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19) Non Standard Curves (W, Y, Z)

PERCENTAGE OF PICKUP CURRENT

Figure 5-28. Non Standard Curves (W, Y, Z)

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100 90 80 70 60

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4k

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8k 9k 10k 100 90 80 70 60

RECLOSER CLEARING TIME CURVE : 1, 2, 3, 4, 5 CURVES ARE AVERAGE CLEARING TIME VARIATIONS ± 5% OR 0.01 SECONDS

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20) Non Standard Curves (1, 2, 3, 4, 5)

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30

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10 9 8 7 6

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5

4

4

3

3

2

2

1 0.9 0.8 0.7 0.6

1 0.9 0.8 0.7 0.6

3

2

0.5

0.5

0.4

0.4

0.3

0.3

0.2

0.2

5 0.1 0.09 0.08 0.07 0.06

0.1 0.09 0.08 0.07 0.06

4 1

PERCENTAGE OF PICKUP CURRENT

Figure 5-29. Non Standard Curves (1, 2, 3, 4, 5)

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RECLOSER CONTROL EVRC2A

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100 90 80 70 60

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8k 9k 10k 100 90 80 70 60

RECLOSER CLEARING TIME CURVE : 6, 7, 8, 8*, 9 CURVES ARE AVERAGE CLEARING TIME VARIATIONS ± 5% OR 0.01 SECONDS

50 40 30

50 40 30

7

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10 9 8 7 6

9

5

5

4

4

3

3

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2

1 0.9 0.8 0.7 0.6

1 0.9 0.8 0.7 0.6

0.5

0.5

0.4

0.4

0.3

0.3

0.2

0.2

8

0.1 0.09 0.08 0.07 0.06

0.1 0.09 0.08 0.07 0.06

8*

0.05

0.05

6

8k 9k 10k

7k

6k

5k

4k

3k

2k

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0.01 700

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TIME(SECONDS)

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900 1k

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200

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21) Non Standard Curves (6, 7, 8, 8*, 9)

PERCENTAGE OF PICKUP CURRENT

Figure 5-30. Non Standard Curves (6, 7, 8, 8*, 9)

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8k 9k 10k 100 90 80 70 60

RECLOSER CLEARING TIME CURVE : 11, 13, 14, 15, 16, 17, 18 CURVES ARE AVERAGE CLEARING TIME VARIATIONS ± 5% OR 0.01 SECONDS

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11

10 9 8 7 6

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700

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22) Non Standard Curves (11, 13, 14, 15, 16, 17, 18)

10 9 8 7 6

5

5

4

4

3

3

2

2

1 0.9 0.8 0.7 0.6

1 0.9 0.8 0.7 0.6

18

0.5

0.5

14

0.4

0.4

0.3

0.3

0.2

0.2

13 0.1 0.09 0.08 0.07 0.06

0.1 0.09 0.08 0.07 0.06

16

17

0.05

0.05

15

0.04

0.04

PERCENTAGE OF PICKUP CURRENT

Figure 5-31. Non Standard Curves (11, 13, 14, 15, 16, 17, 18)

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0.01 500

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0.03

RECLOSER CONTROL EVRC2A

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100 90 80 70 60

7k

6k

5k

4k

3k

8k 9k 10k 100 90 80 70 60

RECLOSER CLEARING TIME CURVE : F, H, J, KG CURVES ARE AVERAGE CLEARING TIME VARIATIONS ± 5% OR 0.01 SECONDS

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10 9 8 7 6

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5

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1 0.9 0.8 0.7 0.6

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0.3

0.2

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F

0.1 0.09 0.08 0.07 0.06

J KG

0.1 0.09 0.08 0.07 0.06

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0.05

H

0.04

0.04

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TIME(SECONDS)

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800 900 1k

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600

500

400

300

200

100

23) Non Standard Curves (F, H, J, KG)

PERCENTAGE OF PICKUP CURRENT

Figure 5-32. Non Standard Curves (F, H, J, KG)

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RECLOSER CONTROL EVRC2A

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5.16. UNDERVOLTAGE ELEMENT (27) Two undervoltage elements are provided for trip, alarm and control when the voltage drops below a specified voltage for a specified time. The undervoltage element can be ON or OFF in the Primary, Alternate settings. The undervoltage element can be selected the type of operation required with any one phase, any two phase and three phase. The undervoltage element can be used to supervise that torque control other overcurrent protective elements. When the circuit breaker is closed by a local/remote controls, the undervoltage element is disabled from detecting for the cold load pickup during periods. To increase security, all undervoltage elements add two power frequency cycle of intentional delay to prevent incorrect operation. The undervoltage 1 should be enabled to the following settings. PRIMARY SETTING / PROTECTION / VOLTAGE / UNDER VOLTAGE 1 / Function [UNDER VOLTAGE 1] >Function: OFF Relays(0-8): OFF Pickup(xVT): 0.70

Range

OFF, TRIP, TR&AR

Default OFF

Step

~

If function = OFF, the feature is not operational. If function = Trip, the feature is operational. If function = Trip & AR, the feature is operational. When the feature asserts a TRIP & AR condition, it trips and alarms.

PRIMARY SETTING / PROTECTION / VOLTAGE / UNDER VOLTAGE 1 / Relays(0-8) [UNDER VOLTAGE 1] Function: OFF >Relays(0-8): OFF Pickup(xVT): 0.70

Range

OFF, 0 ~ 8

Default OFF

Step

1

Selects the relays required to operate when the feature generates a Trip.

PRIMARY SETTING / PROTECTION / VOLTAGE / UNDER VOLTAGE 1 / Pickup(xVT) [UNDER VOLTAGE 1] Function: OFF Relays(0-8): OFF >Pickup(xVT): 0.70

Range

0.00 ~ 1.25 × VT(secondary nominal voltage)

Default 0.70

Step

0.01

Enter the pickup value as a fraction of the secondary nominal voltage. For example, if the secondary nominal voltage is 100V, and an alarm is required whenever the voltage goes below 70V, enter(70/100) = 0.70 × VT for the pickup.

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RECLOSER CONTROL EVRC2A

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PRIMARY SETTING / PROTECTION / VOLTAGE / UNDER VOLTAGE 1 / Time Delay [UNDER VOLTAGE 1] Relays(0-8): OFF Pickup(xVT): 0.70 >Time Delay : 5.00

Range

0.00 ~ 600.00

Default 5.00

Step

0.01

Select the definite time delay.

PRIMARY SETTING / PROTECTION / VOLTAGE / UNDER VOLTAGE 1 / Min. V(xVT) [UNDER VOLTAGE Pickup(xVT): Time Delay : >Min. V(xVT):

1] 0.70 5.00 0.10

Range

0.00 ~ 1.25 × VT(secondary nominal voltage)

Default 0.10

Step

0.01

Enter the minimum voltage for the undervoltage. Used to prevent the undervoltage 1 element for voltage below this level. Setting to 0.10 xVT will allow a dead line to be considered a trip condition.

PRIMARY SETTING / PROTECTION / VOLTAGE / UNDER VOLTAGE 1 / Pickup Type [UNDER VOLTAGE 1] Time Delay : 5.00 Min. V(xVT): 0.10 >Pickup Type: 1P

Range

1P, 2P, 3P

Default 1P

Step

~

Select the type of phase required for operation.

The undervoltage 2 settings process a very similar method to the undervoltage 1.

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RECLOSER CONTROL EVRC2A

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5.17. OVERVOLTAGE ELEMENT (59) Two overvoltage elements are provided for trip, alarm and control when the voltage rises above a specified voltage for a specified time. The overvoltage element can be ON or OFF in the Primary, Alternate settings . The overvoltage element can be selected the type of operation required with any one phase, any two phase and three phase. When the circuit breaker is closed by a local/remote controls, the overvoltage element is disabled from detecting for the cold load pickup during periods. To increase security, all overvoltage elements add two power frequency cycle of intentional delay to prevent incorrect operation. The overvoltage 1 should be enabled to the following settings. PRIMARY SETTING / PROTECTION / VOLTAGE / OVER VOLTAGE 1 / Function [OVER VOLTAGE 1] >Function: OFF Relays(0-8): OFF Pickup(xVT): 1.20

Range

OFF, TRIP, TR&AR

Default OFF

Step

~

If function = OFF, the feature is not operational. If function = Trip, the feature is operational. If function = Trip & AR, the feature is operational. When the feature asserts a TRIP & AR condition, it trips and alarms.

PRIMARY SETTING / PROTECTION / VOLTAGE / OVER VOLTAGE 1 / Relays(0-8) [OVER VOLTAGE 1] Function: OFF >Relays(0-8): OFF Pickup(xVT): 1.20

Range

OFF, 0 ~ 8

Default OFF

Step

1

Selects the relays required to operate when the feature generates a Trip.

PRIMARY SETTING / PROTECTION / VOLTAGE / OVER VOLTAGE 1 / Pickup(xVT) [OVER VOLTAGE 1] Function: OFF Relays(0-8): OFF >Pickup(xVT): 1.20

Range

0.00 ~ 1.25

Default 1.20

Step

0.01

Enter the pickup value as a fraction of the secondary nominal voltage. For example, if the secondary nominal voltage is 100 V, and an alarm is required whenever the voltage exceeds 120 V, enter 120 / 100 = 1.20 for the pickup.

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RECLOSER CONTROL EVRC2A

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PRIMARY SETTING / PROTECTION / VOLTAGE / OVER VOLTAGE 1 / Time Delay [OVER VOLTAGE 1] Relays(0-8): OFF Pickup(xVT): 1.20 >Time Delay : 5.00

Range

0.00 ~ 600.00

Default 5.00

Step

0.01

Select the definite time delay.

PRIMARY SETTING / PROTECTION / VOLTAGE / OVER VOLTAGE 1 / Pickup Type [OVER VOLTAGE 1] Pickup(xVT): 1.20 Time Delay : 5.00 >Pickup Type: 1P

Range

1P, 2P, 3P

Default 1P

Step

~

Select the type of phase required for operation.

The overvoltage 2 settings process a very similar method to the overvoltage 1.

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5.18. UNDERFREQUENCY LOAD SHEDDING (81) Underfrequency load shedding element is provided for trip, alarm and control when the voltage rises above a specified voltage setting for a specified time delay. The underfrequency load shedding element can be ON or OFF in the Primary, Alternate settings. The power system frequency is measured from the zero crossing on the VA-N voltage input for Wye connected VTs and VA-B voltage for Delta connected VTs. The underfrequency load shedding element is activated to trip when the distribution system frequency drops below a specified frequency pickup for a specified time. The underfrequency minimum voltage and underfrequency minimum current are used to prevent incorrect operation when the recloser is closed by a local/remote control and the underfrequency load shedding is disabled from tripping for cold load pickup during periods. The underfrequency load shedding element should be enabled to the following settings. PRIMARY SETTING / PROTECTION / FREQUENCY / UNDER FREQUENCY/ Function [UNDER FREQUENCY] >Function: OFF Relays(0-8): OFF Pickup(Hz): 55.00

Range

OFF, TRIP, TR&AR

Default OFF

Step

~

If function = OFF, the feature is not operational. If function = Trip, the feature is operational. If function = Trip & AR, the feature is operational. When the feature asserts a TRIP & AR condition, it trips and alarms.

PRIMARY SETTING/PROTECTION/FREQUENCY / UNDER FREQUENCY/ Relays(0-8) [UNDER FREQUENCY] Function: OFF >Relays(0-8): OFF Pickup(Hz): 55.00

Range

OFF, 0 ~ 8

Default OFF

Step

1

Selects the relays required to operate when the feature generates a Trip.

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PRIMARY SETTING/PROTECTION/FREQUENCY/UNDER FREQUENCY / Pickup(Hz) [UNDER FREQUENCY] Function: OFF Relays(0-8): OFF >Pickup(Hz): 55.00

Range

40.00 ~ 65.00

Default 55.00

Step

0.01

Enter the level of which the underfrequency element is to pickup. For example, if the system frequency is 60㎐, and load shedding is required at 55.00㎐, enter 55.00 for this setting.

PRIMARY SETTING/PROTECTION/FREQUENCY/UNDER FREQUENCY/ Time Delay [UNDER FREQUENCY] Relays(0-8): OFF Pickup(Hz): 55.00 >Time Delay: 2.00

Range

0.00 ~ 600.00

Default 2.00

Step

0.01

Select the definite time delay.

PRIMARY SETTING/PROTECTION/FREQUENCY/UNDER FREQUENCY/Min. V(xVT) [UNDER FREQUENCY] Pickup(Hz): 55.00 Time Delay: 2.00 >Min. V(xVT): 0.10

Range

0.00 ~ 1.25

Default 0.10

Step

0.01

Enter the minimum voltage required to allow the underfrequency element to Operate.

PRIMARY SETTING/PROTECTION/FREQUENCY/UNDER FREQUENCY/ Min. I(xCT) [UNDER FREQUENCY] Time Delay: 2.00 Min. V(xVT): 0.10 >Min. I(xCT): 0.01

Range

0.00 ~ 3.20

Default 0.01

Step

0.01

Enter the minimum value of current required for any phase to allow the underfrequency element to operate.

ENHANCED TECHNOLOGY

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5.19. OTHER ELEMENT PRIMARY SETTING / PROTECTION / OTHER ELEMENT / Seq’ Coordi’ [OTHER ELEMENT] >Seq’ Coordi’: OFF L.O Priority: GND F/I Reset: AUTO

Range

OFF, ON

Default OFF

Step

~

Sequence coordination offers the function of preventing unnecessary operation of the backup recloser when two more reclosers are connected in series. If function = OFF, the feature is not operational. If function = ON, the feature is operational.

PRIMARY SETTING / PROTECTION / OTHER ELEMENT / L.O Priority [OTHER ELEMENT] Seq’ Coordi’: OFF >L.O Priority: GND F/I Reset: AUTO

Range

PHA, GND

Default GND

Step

~

Lockout priority PHA : Phase prior GND : Ground prior

PRIMARY SETTING / PROTECTION / OTHER ELEMENT / F/I Reset [OTHER ELEMENT] Seq’ Coordi’: OFF L.O Priority: GND >F/I Reset: AUTO

Range

AUTO, MANUAL

Default AUTO

Step

~

Faulted Indicator reset method AUTO : Reset shall be performed by pressing [FI RESET] button or shall be performed automatically after High Voltage line becomes normal. MANUAL : It shall be reset by pressing [FI RESET] button.

PRIMARY SETTING / PROTECTION / OTHER ELEMENT / D/T M-Close [OTHER ELEMENT] L.O Priority: GND F/I Reset: AUTO >D/T M-Close: 0.00

Range

0.00 ~ 600.00 sec

Default 0.00 sec

Step

Time delay for manual close

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ENHANCED TECHNOLOGY

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RECLOSER CONTROL EVRC2A

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5.20. SYNCHRONISM CHECK (25) EVRC2A provides the manual close for the synchronism check element that synchronism voltages are within the programmed differentials of voltage magnitude, phase angle position, and frequency. If this feature is enabled, the synchronism check will be performed before local/remote close with the exception of automatic reclose for fault. When either or both of the synchronism check voltages are de-energized, the synchronism check can allow for local/remote close. If EVRC2A is the type of CVD, the synchronism check voltage input VL is connected to load side(VR phase) in recloser. The other synchronizing phase can be connected for phase-neutral voltage Vr, Vs or Vt; for phase-phase voltages Vab or Vcb. on load side in recloser. The synchronism check element in the following settings should be enabled. PRIMARY SETTING / MONITORING / SYNCHROCHECK / Function [SYNCHROCHECK] >Function: OFF Relays(0-8): OFF D.V.Max(xVT): 0.50

Range

OFF, ALARM

Default OFF

Step

~

If function = OFF, the feature is not operational. If function = ALARM, the feature is operational.

PRIMARY SETTING / MONITORING / SYNCHROCHECK / Relays(0-8) [SYNCHROCHECK] Function: OFF >Relays(0-8): OFF D.V.Max(xVT): 0.50

Range

OFF, 0 ~ 8

Default OFF

Step

1

Selects the relays required to operate when the feature generates an Alarm.

PRIMARY SETTING / MONITORING / SYNCHROCHECK / D.V.Max(xVT) [SYNCHROCHECK] Function: OFF Relays(0-8): OFF >D.V.Max(xVT): 0.50

Range

0.00 ~ 1.25

Default 0.50

Step

0.01

Enter the dead line maximum voltage for synchronism check. Used to Prevent the synchronism check element for voltage below this level.

ENHANCED TECHNOLOGY

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PRIMARY SETTING / MONITORING / SYNCHROCHECK / L.V.Min(xVT) [SYNCHROCHECK] Relays(0-8): OFF D.V.Max(xVT): 0.50 >L.V.Min(xVT): 0.85

Range

0.00 ~ 1.25

Default 0.85

Step

0.01

Enter the live line minimum voltage for synchronism check. Used to activate the synchronism check element for voltage over this level.

PRIMARY SETTING / MONITORING / SYNCHROCHECK / M.V.D(V) [SYNCHROCHECK] D.V.Max(xVT): 0.50 L.V.Min(xVT): 0.85 >M.V.D(KV): 0.10

Range

0.00 ~ 1.25

Default 0.10

Step

0.01

Enter the maximum voltage difference of the synchronism voltages. A voltage magnitude differential of the two input voltages below this value is within the permissible limit for synchronism.

PRIMARY SETTING / MONITORING / SYNCHROCHECK / M.A.D(Deg) [SYNCHROCHECK] L.V.Min(xVT): 0.85 M.V.D(V): 0.10 >M.A.D(Deg): 15

Range

0 ~ 100

Default 15

Step

1

Enter the maximum angle difference of the synchronism voltages. An angular differential between the synchronism voltage angles below this value is within the permissible limit for synchronism.

PRIMARY SETTING / MONITORING / SYNCHROCHECK / M.F.D(Hz) [SYNCHROCHECK] M.V.D(V): 0.10 M.A.D(Deg): 15 >M.F.D(Hz): 2.00

Range

0.00 ~ 5.00

Default 2.00

Step

0.01

Enter the maximum frequency difference of the synchronism voltages. A frequency differential between the synchronism voltages below this value is within the permissible limit for synchronism.

PRIMARY SETTING / MONITORING / SYNCHROCHECK / Sync Phase [SYNCHROCHECK] M.A.D(Deg): 15 M.F.D(Hz): 2.00 >Sync Phase: R(AB)

Range

R(AB), S(CB), T

Default R(AB)

Step

~

Select the synchronism check phase on load side.

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5.21. FAULT LOCATOR The fault locator calculates the distance to the fault. When fault occurs the magnitude and the phase of voltage and current are varied, and then fault type(phase to ground, (phase to phase to ground), phase to phase, three phase) can be determined by the analysis of these variations, and fault distance can be calculated by the estimation of the apparent impedance. This calculation is based on the assumptions that the feeder positive and zero sequence impedance are a constant per unit distance and fault impedance is composed of pure resistance. In calculating, errors could be introduced by several reasons(fault resistance etc.), the major error due to fault resistance can be reduced by comparing the prefault current and voltage to the fault current and voltage. For more accurate calculation, the prefault data is required at least 2 cycles, and the after fault data is required at least 2 cycles. If the line impedance per unit and total length were known, the fault distance can be easily achieved, but source impedance is not required. Fault data may not be accurate for a close-into-fault condition where there is no prefault power flow. In case of closing, during a reclose sequence, the apparent distance of the first fault is very useful. The algorithm for the fault locator is most applicable to a radial three-phase feeder. Faulted distribution system is considered as following simplified “Figure 5-33. Faulted distribution system circuit” for example.

(1-m)Z

mZ

IA IF VA

RF

L O A D

Figure 5-33. Faulted distribution system circuit

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The fault locator settings are as follows : PRIMARY SETTING / MONITORING / FAULT LOCATOR \ Function [FAULT LOCATOR] >Function : OFF Length(km) : 50.0 Z1(RES) : 10.0

Range

OFF, ON

Default OFF

Step

~

If function = OFF, the feature is not operational. If function = ON, the feature is operational.

PRIMARY SETTING / MONITORING / FAULT LOCATOR \ Feeder Length [FAULT LOCATOR] Function : OFF >Length(km) : 50.0 Z1(RES) : 10.0

Range

1.0-99.9 km

Default 50.0

Step

0.1

Enter the total length of the feeder in kilometers

PRIMARY SETTING / MONITORING / FAULT LOCATOR \ Z1-Resistive [FAULT LOCATOR] Function : OFF Length(km) : 50.0 >Z1(RES) : 10.0

Range

0.1-6000.0

Default 10.0

Step

0.1

Enter the total real components of the feeder positive sequence impedance, in actual ohms.

PRIMARY SETTING / MONITORING / FAULT LOCATOR \ Z1-Inductive [FAULT LOCATOR] Length(km) : 50 Z1(RES) : 10.0 >Z1(IND) : 10.0

Range

0.1-6000.0

Default 10.0

Step

0.1

Enter the total imaginary components of the feeder positive sequence impedance, in actual ohms.

PRIMARY SETTING / MONITORING / FAULT LOCATOR \ Z0-Resistive [FAULT Z1(RES) Z1(IND) >Z0(RES)

LOCATOR] : 10.0 : 10.0 : 10.0

Range

0.1-6000.0

Default 10.0

Step

0.1

Enter the total real components of the feeder zero sequence impedance, in actual ohms.

PRIMARY SETTING / MONITORING / FAULT LOCATOR \ Z0-Inductive [FAULT Z1(IND) Z0(RES) >Z0(IND)

LOCATOR] : 10.0 : 10.0 : 10.0

Range

0.1-6000.0

Default 10.0

Step

Enter the total imaginary components of the feeder zero sequence impedance, in actual ohms.

136

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ENHANCED TECHNOLOGY

RECLOSER CONTROL EVRC2A

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6. METERING The following values are contained in the metering elements of EVRC2A. y

Current

y

Voltage

y

Frequency

y

Synchronism Voltage

y

Power

y

Energy

y

Demand

y

System.

6.1. Metering Elements 6.1.1. Current The following values are contained in the current metering. IA : Displays the measured phase A RMS current and phasor (A, deg°) IB : Displays the measured phase B RMS current and phasor (A, deg°) IC : Displays the measured phase C RMS current and phasor (A, deg°) IG : Displays the measured ground RMS current and phasor (A, deg°) ISG : Displays the measured sensitive earth RMS current and phasor (A, deg°) I1 : Displays the calculated positive sequence RMS current and phasor (A, deg°) I2 : Displays the calculated negative sequence RMS current and phasor (A, deg°) I0 : Displays the calculated zero sequence RMS current and phasor (A, deg°) You can confirm in “MAIN MENU / METERING / CURRENT” MAIN MENU / METERING / CURRENT [PHASE 0 [PHASE 0

A A B A

CURRENT] 000.0 Lag CURRENT] 000.0 Lag

Phase A and B Current metering Display Use [▲] [▼] keys to move to next value.

6.1.2. Voltage The following values are contained in the voltage metering. VA-N : Displays the measured A-N RMS voltage and phasor(㎸, deg°)

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VB-N : Displays the measured B-N RMS voltage and phasor(㎸, deg°) VC-N : Displays the measured C-N RMS voltage and phasor(㎸, deg°) VA-B : Displays the measured A-B RMS voltage and phasor(㎸, deg°) VB-C : Displays the measured B-C RMS voltage and phasor(㎸, deg°) VC-A : Displays the measured C-A RMS voltage and phasor(㎸, deg°) VAP : Displays the calculated average of the RMS phase voltage(㎸) VAL : Displays the calculated average of the RMS line voltage(㎸) V1 : Displays the calculated positive sequence RMS voltage and phasor(㎸, deg°) V2 : Displays the calculated negative sequence RMS voltage and phasor(㎸, deg°) V0 : Displays the calculated zero sequence RMS voltage and phasor (kV, deg°) You can confirm in “MAIN MENU / METERING / VOLTAGE” MAIN MENU / METERING / VOLTAGE [PHASE 0.00 [PHASE 0.00

A-N VOLTAGE] kV 0.0 Lag B-N VOLTAGE] kV 0.0 Lag

Phase A-N and B-N Voltage metering Display. Use [▲] [▼] keys to move to next value.

6.1.3. Frequency The following values are contained in the frequency metering. y

Frequency(㎐)

y

Frequency decay rate(㎐/Sec)

You can confirm in “MAIN NEMU / METERING / FREQUENCY” MAIN MENU / METERING / FREQUENCY [ FREQUENCY (Hz)] 0.00 Hz 0.00 Hz/Sec

Frequency Display

6.1.4. Synchro Voltage The following values are contained in the synchronism voltage metering. y

Synchro Voltage(㎸)

y

Synchro Phasor(deg°)

y

Synchro Frequency(㎐)

y

Synchrocheck delta(Phasor, voltage, frequency)

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You can confirm in “MAIN NEMU / METERING / SYNCHRO VOLTAGE” MAIN MENU / METERING / SYNCHRO VOLTAGE [SYNCHRO VOLTAGE] 0.00 kV 0.0 Leg [SYNCHRO FREQUENCY] 0.00 Hz

Synchronism Voltage, Frequency Display. Use [▲] [▼] keys to move to next value.

6.1.5. Power The following values are contained in the power metering. y

Real power(MW)

y

Reactive power(Mvar)

y

Apparent power(MVA)

y

Power factor(%)

You can confirm in “MAIN NEMU / METERING / POWER” MAIN MENU / METERING / POWER [REAL POWER (MW)] Pa: 0.00 Pb: 0.00 P3: 0.00 Pc: 0.00

Real Power (A, B, C, 3ф) Display. Use [▲] [▼] keys to move to next value.

6.1.6. Energy The following values are contained in the energy metering. y

Positive watthour(MWh)

y

Negative watthour(MWh)

y

Positive varhour(Mvar)

y

negative varhour(Mvar)

The updated rate of the energy meters is based on the “Time Constant” setting “MAIN MENU / SETTING / MONITORING / DEMAND” The meters will update every 1/15 of the Demand Constant. For example : if the Demand Constant is set to 15 minutes, the energy meters will update every 1 minute (15min × 1/15 = 1 min) The watt-hour and VAR-hour meters can be reset to 0 through “PRIMARY SETTING / RELAY SETUP / CLEAR SAVED DATA / MAX DEMAND”

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You can confirm in “MAIN NEMU / METERING / ENERGY” MAIN MENU / METERING / ENERGY [POSITIVE WATTHOURS] 0 MWh [NEGATIVE WATTHOURS] 0 MWh

Positive / Negative Watthour Display Use [▲] [▼] keys to move to next value.

6.1.7. Demand The following values are contained in the demand metering. Actual demand & maximum demand with Value (Current, Real power, Reactive power) and Date (Year/Month/Date Hour:Minute,Second) Energy value & start date (Year/Month/Date Hour:Minute,Second) During each demand value, the EVRC2A also captures and stores maximum values for the measurements listed below. It functions as a standard maximum meter. When a new maximum value is determined, the old value is replaced. A time stamp in the following format (Date: Year/Month/Day and Time: Hour:Minute,Second), is placed with the latest maximum values. The Max demand meters can be reset to 0 through “PRIMARY SETTING / RELAY SETUP / CLEAR SAVED DATA / MAX DEMAND” You can confirm in “MAIN NEMU / METERING / DEMEND” MAIN MENU / METERING / DEMAND PHASE A CURRENT DEMAND: 0 A MAX : 0 A 02/01/22 10:24:10

140

Positive / Negative Watthour Display. Use [▲] [▼] keys to move to next value.

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6.1.8. System The following values are contained in the system metering. y

Board power(±12, +5V)

y

Temperature(℃)

y

Battery voltage(V)

y

Gas pressure(Bar)

You can confirm in “MAIN NEMU / METERING / SYSTEM” MAIN MENU / METERING / SYSTEM [ SYSTEM METER] +12:11.85 –12:-11.94 +5 : 4.99 TMP:27.58 BAT:26.04 GAS: 0.50

System metering display.

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6.2. Accuracy The harmonic components of current and voltage are removed from input voltage and current parameters, so all measurements based on these quantities respond to the fundamental component only. Table 6-1. Metering Accuracy Measurements

Parameters

Accuracy

Unit

Range

CVD

VT

A

±1% of 2 x CT

±1% of 2 x CT

20 x CT

㎸

±2.5%

±1%

-

Phase A RMS Current CURRENT

Phase B RMS Current Phase C RMS Current Phase G RMS Current A–N (A–B) RMS Voltage

VOLTAGE

B–N (B–C) RMS Voltage C–N (C–A) RMS Voltage

SYMMETRICAL

I1, I2, 3I0

A

±1% of 2 x CT

±1% of 2 x CT

COMPONENTS

V1, V2, 3V0

㎸

±2.5%

±1%

POWER

Phase A, B, C

FACTOR

Rate

±0.05

±0.02

-1.00 to 1.00

3Φ Phase MW

±3%

±2%

–320.00 to 320.00

Mvar

±3%

±2%

–320.00 to 320.00

MVA

±3%

±2%

–320.00 to 320.00

MW/h

±5%

±3%

–32000 to 32000

Phase A/B/C/G Current

A

±2%

±2%

A/B/C, 3Φ Real Power

MW

±5%

±3%

A/B/C, 3Φ Reactive Power

Mvar

±5%

±3%

A/B/C, 3Φ Apparent Power

MVA

±5%

±3%

㎐

±0.05

±0.02

3ΦREAL POWER

Phase A, B, C

-

3Φ Phase 3ΦREACTIVE

Phase A, B, C

POWER

3Φ Phase

3ΦAPPARENT

Phase A, B, C

POWER

3Φ Phase

WATT-HOURS

Phase A, B, C 3Φ Phase

DEMAND

FREQUENCY

A-N (A-B) Source

-

40.00 to 65.00

Load Voltage

If the VT connection type is set to delta, all single phase voltage quantities are displayed as zero.

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7. MONITORING EVRC2A has Monitoring function for following items and also has functions for user to output Alarm signal or Trip signal. y

DEMAND

y

SYNCHRO LINE

y

TRIP COUNTER

y

RECLOSER WEAR

7.1. Demand 7.1.1. Description EVRC2A is programmed to monitor following items to be operated as user sets. y

Phase Current demand value

y

Ground current demand value

y

Negative sequence current demand value

7.1.2. Related Setting Menu 1) Function Setting Select for system to operate when Demand elements were picked up. PRIMARY SETTING / MONITORING / DEMAND / Function [DEMAND] >Function: Relays(0-8): Type:

Range OFF OFF THM

OFF, TRIP, TR&AR

Default OFF

Step

~

OFF : OFF Monitoring TRIP : Generates Trip signal TR&AR : Generate Trip and Alarm signal

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2) Alarm Output Relay Setting Select Relay output for alarm. PRIMARY SETTING / MONITORING / DEMAND / Relays(0-8) [DEMAND] Function: >Relays(0-8): Type:

Range OFF OFF THM

OFF, 0 ~ 8

Default OFF

Step

1

Maximum 4 of Relay outputs can be selected to operate output signal. 0000 : No Output Relay is selected. 1234 : Operate output signal through 1, 2, 3, 4 Output Relay.

3) Demand Method Setting Setting for Demand calculation method. PRIMARY SETTING / MONITORING / DEMAND / Type [DEMAND] Function: Relays(0-8): >Type:

Range OFF OFF THM

THM, ROL

Default THM

Step

~

THM : Calculated by Thermal Exponential demand. ROL : Calculated Rolling demand.

4) Time constant Setting Setting for 90% Response time in Thermal calculation method. PRIMARY SETTING / MONITORING / DEMAND / Time Constant(m) [DEMAND] Relays(0-8): OFF Type: THM >Time Constant(m): 5

Range

5, 10, 15, 20, 30, 60

Default 5

Step

~

Enter the time required for a steady state current to indicate 90% of the actual value.

5) Phase demand pickup current setting Setting for Phase demand pickup current. PRIMARY SETTING / MONITORING / DEMAND / PHA PU(xCT) [DEMAND] Type: THM Time Constant(m): 5 >PHA PU(xCT): 0.60

Range

0.00 ~ 3.20

Default 0.60

Step

0.01

Setting value × CT Phase Ratio. Ex) When CT ratio is 1000:1and setting value is 0.60, Pickup Current 0.60 × 1000 = 600A

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6) Ground demand pickup current Setting Setting for Ground demand pickup current. PRIMARY SETTING / MONITORING / DEMAND / GND PU(xCT) [DEMAND] Time Constant(m): 5 PHA PU(xCT): 0.60 >GND PU(xCT): 0.30

Range

0.00 ~ 3.20

Default 0.30

Step

0.01

Setting value × CT Ground Ratio Ex) When CT ratio is 1000:1and setting value is 0.30, Pickup Current 0.30 × 1000 = 300A

7) Negative sequence demand pickup current Setting Setting for Negative sequence demand pickup current. PRIMARY SETTING / MONITORING / DEMAND / NEG PU(xCT) [DEMAND] PHA PU(xCT): GND PU(xCT): >NEG PU(xCT):

Range 0.60 0.30 0.60

0.00 ~ 3.20

Default 0.60

Step

0.01

Setting value × CT Phase Ratio. Ex) When CT ratio is 1000:1and setting value is 0.60, Pickup Current 0.60 × 1000 = 600A

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7.2. SYNCHRONISM CHECK Refer to “5. PROTECTION”

7.3. TRIP COUNTER 7.3.1. Trip Counter Explanation EVRC2A records counter related with System operation. Especially Trip Counter is operated depending on Monitoring function set by user. y

Trip : Records trip operation count

y

Fault : Records Fault count

y

System Restart : Records system restart count MAIN MENU / MAINTENANCE / COUNTERS [ COUNTER ] 1.TRIP : 00000 2.FAULT : 00000 3.RESTART: 00011

User can confirm in “MAIN MENU/MAINTENANCE/COUNTERS”

7.3.2. Related Setting Menu 1) Function Setting Select for system to operate when Trip Counter reaches Limit value set by user. PRIMARY SETTING / MONITORING / TRIP COUNTER / Function [TRIP COUNTER] >Function: OFF Relays(0-8): OFF Limit: 10000

Range

OFF, ALARM

Default OFF

Step

~

OFF : OFF Monitoring TRIP : Generates Trip signal TR&AR : Generate Trip and Alarm signal

2) Alarm Output Relay Setting Select Relay output for alarm. PRIMARY SETTING / MONITORING / TRIP COUNTER / Relays(0-8) [TRIP COUNTER] Function: OFF >Relays(0-8): OFF Limit: 10000

Range

OFF, 0 ~ 8

Default OFF

Step

1

Maximum 4 of Relay outputs can be selected to operate output signal. 0000 : No Output Relay is selected. 1234 : Operate output signal through 1, 2, 3, 4 Output Relay.

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3) Limit value Setting Setting for Trip Counter Monitor value. PRIMARY SETTING / MONITORING / TRIP COUNTER / Limit [TRIP COUNTER] Function: OFF Relays(0-8): OFF >Limit: 10000

Range

1 ~ 20000

Default 10000

Step

1

Select for system to operate when Trip Counter limit value was picked up.

4) Clear value Setting Use to synchronize EVRC2A counter with Recloser Counter. PRIMARY SETTING / MONITORING / TRIP COUNTER / Counter set [TRIP COUNTER] Relays(0-8): OFF Limit: 10000 >Counter set: 0

Range

0 ~ 10000

Default 0

Step

1

Enters a value for Trip Counter Clear.

5) Stored Value Clear Select “4. DIAGNOSTIC” in “PRIMARY SETTING / RELAY SETUP / CLEAR SAVED DATA” to clear

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7.4. RECLOSER WEAR 7.4.1. Explanation Maintenance of contact life of Recloser. Manages the contact life calculated from fault current size when faults interrupted. The initial value is 100% MAIN MENU / MAINTENANCE / WEAR MONITOR [WEAR MONITOR (%)] 1.CONTACT A : 98.70 2.CONTACT B : 98.70 3.CONTACT C : 98.70

User can confirm in “MAIN MENU / MAINTENANCE / WEAR MONITOR” Phase A Wear : Shows phase A contact life. Phase B Wear : Shows phase B contact life. Phase C Wear : Shows phase C contact life.

7.4.2. Related setting menu 1) Function Setting PRIMARY SETTING / MONITORING / TRIP COUNTER / Function [RECLOSER WEAR] >Function: ALARM Pickup(%): 20.0 Rated Volt(kV): 15

Range

OFF, ALARM

Default ALARM

Step

~

Select for system to operate when Recloser wear elements were picked up.

2) Pickup Setting PRIMARY SETTING / MONITORING / TRIP COUNTER / Pickup(%) [RECLOSER WEAR] Function: ALARM >Pickup(%): 20.0 Rated Volt(kV): 15

Range

0.0 ~ 50.0 %

Default 20.0

Step

0.1

Enter Pickup value of contact life.

3) Rated Voltage Setting PRIMARY SETTING / MONITORING / TRIP COUNTER / Rated Volt(kV) [RECLOSER WEAR] Function: ALARM Pickup(%): 20.0 >Rated Volt(kV): 15

Range

15, 27, 38 ㎸

Default Note 1

Step

~

Select rated voltage. NOTE 1) The rated voltage determines the Recloser type.

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4) Interrupter capacity setting PRIMARY SETTING / MONITORING / TRIP COUNTER / Interrupt(kA) [RECLOSER WEAR] Pickup(%): 20.0 Rated Volt(kV): 15 >Interrupt(kA): 12.5

Range

5.0 ~ 50.0 ㎸

Default 12.5

Step

0.1

Enter the capacity of rated Interrupter.

5) Maximum Rated Interruption Number Setting PRIMARY SETTING / MONITORING / TRIP COUNTER / No. Max I [RECLOSER WEAR] Rated Volt(kV): 15 Interrupt(kA): 12.5 >No. Max I: 100

Range

1 ~ 999

Default 100

Step

1

Enter the capacity of rated Interrupter.

6) Stored value Clear Select WEAR MONITOR in “PRIMARY SETTING / RELAY SETUP / CLEAR SAVED DATA” to clear value. Insert the value set in “PRIMARY SETTING / MONITORING / RECLOSER WEAR / A, B, C Wear” from LCD menu.

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8. EVENT RECORDER EVRC2A has recording and maintenance function for following items. y

FAULT CYCLE WAVEFORM CAPTURE

y

SYSTEM EVENT RECORDER

y

DIAGNOSTIC EVENT RECORDER

y

LOAD PROFILE

8.1. WAVEFORM CAPTURE In case of Fault, Waveform Capture records 16 Data of 15-Cycle with 16-Smple per 1 Cycle resolution. Fault cycle summary is displayed on LCD screen Captured fault waveforms can be showed by the interface software. Move to “MAIN MENU / EVENT RECORDER / FAULT CYCLE” to see Fault cycle summary. MAIN MENU / EVENT RECORDER / FAULT CYCLE [NO-01]TARGET0x00003 IA: 0 IB: 549 IC: 0 IG: 548 02/01/14 19:51:58

Fault cycle summary display.

8.1.1. Trigger Source y

Occurred Protection element pickup

y

Occurred Fault trip command active

Depending on pickup size, if interval between pickup and trip is within 15 cycles including prefault cycles(4 cycles), then record pickup cycles. But if the interval between pickup and trip are not within 15 cycles, then record pickup cycles and trip cycles. These operations are very useful to examine.

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8.1.2. Data Channels Stores following data : y

4 currents : Ia, Ib, Ic, Ig

y

3 voltages (Va, Vb, Vc) : not passed digital-filter

y

Frequency

y

32 logic input states

y

8Ch output relays

y

8Ch Input

8.1.3. Sample Rate Captures one period of 16 sampling per 1cycle.

8.1.4. Storage capacity The capacity of storage is last 16 events of 15cycles.

8.1.5. Related Setting Menu 1) ON/OFF Setting Fault Cycle waveform capture function can be set ON/OFF by user. PRIMARY SETTING / RELAY SETUP \ EVENT RECORDER \ Fault Cycle [EVENT RECORDER] >Fault Cycle: ON Len' of Pre F: 4 Load Profile: ON

Range

OFF, ON

Default ON

Step

~

ON : Record fault cycle waveform. OFF : No record of fault cycle waveform.

2) Pre-fault length Setting User sets the length of pre-fault before Trigger. PRIMARY SETTING / RELAY SETUP \ EVENT RECORDER \ Len' of Pre F [EVENT RECORDER] Fault Cycle: ON >Len' of Pre F: 4 Load Profile: ON

Range

0 ~ 14

Default 4

Step

1

Usually sets 4 cycles as default.

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3) Stored Value Clear Select “1. FAULT CYCLE” in “PRIMARY SETTING / REALY SETUP / CLEAR SAVED DATA” to clear the stored value.

8.1.6. Interface software Interface software shows Data and captured waveform (below)

Figure 8-1. Data and captured waveform showed by Interface Software

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8.2. SYSTEM EVENT RECORDER Record changes of system status up to 500 lists when trigger source asserted and deasserted. MAIN MENU / EVENT RECORDER / SYSTEM STATUS [NO-001] CONTR LOCK STATUS : LO/DEASSERT DATE : 02/01/22 TIME : 19:51:58:387

Confirm in ”MAIN MENU / EVENT RECORDER / SYSTEM STATUS”

8.2.1. Trigger Source y

Protection Element

y

52A Contact

y

Sequence status

y

Front panel control

y

AC supply

y

External control

y

Fail operation

y

External input status

y

System alarm NOTE : For more details about Trigger Source, refer to “Appendix C”

8.2.2. Trigger Time Monitors changes of Trigger source status in every 1/4 cycle.

8.2.3. Trigger type Stores type of Trigger source : Pickup(assert) or Dropout(deassert)

8.2.4. Storage Capacity Stores last 500 events.

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8.2.5. Related Setting Menu System automatically maintains system event recorder. User can clear only stored events. 1) Stored Value Clear Select “2.SYSTEM STATUS” in “PRIMARY SETTING / RELAY SETUP \ CLEAR SAVED DATA” to clear.

8.2.6. Interface software Interface software shows system status events.

Figure 8-2. System Status Events showed by Interface Software

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8.3. DIAGNOSTIC EVENT RECORDER 8.3.1. Trigger Source y

SYSTEM POWER : AC, Battery, ±12V, +5V

y

A/D Conversion : A/D Fail, Reference Voltage1, Reference Voltage 2

y

SLEEP MODE

y

POWER DOWN MODE

y

SETTING CHANGE

y

GAS STATUS

For more details about Trigger Source, refer to “Appendix D”

8.3.2. Trigger Time Monitors status of Trigger source in every 1/4 cycle

8.3.3. Trigger type Stores type of Trigger source : Pickup(assert) or Dropout(deassert)

8.3.4. Storage Capacity Stores last 100 events.

8.3.5. Related Setting Menu System automatically maintains Diagnostic event recorder. User can clear only stored events. 1) Stored Value Clear Select “4.DIAGNOSTIC” in “PRIMARY SETTING / RELAY SETUP / CLEAR SAVED DATA” to clear.

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8.3.6. Interface software Interface software shows Diagnostic events.

Figure 8-3. Diagnostic Events showed by Interface Software

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8.4. LOAD PROFILE Record the Demand value when reaches in setting time (5, 10, 15, 20, 30, 60minute). Load profile has 1024 Banks that can store values of 42 days if setting time is 60minute. LOAD PROFILE ① CURRENT (A) [0001] A: 0 B: 0 C: 0 G: 0 02/01/22 21:45:00

② REAL POW(MW) [0001] A: 0 B: 0 C: 0 G: 0 02/01/22 21:45:00

Confirm in ”MAIN MENU / EVENT RECORDER / LOAD PROFILE” y

To see previous value, press [▲] key.

y

To see next value, press [▼] key.

y

On screen ①, use [◀] or [▶] key to see ①, ②, ③ screen in tern.

③ REAC POW(Mvar)[0001] A: 0 B: 0 C: 0 G: 0 02/01/22 21:45:00

8.4.1. Trigger Source y

Demand Current(A, B, C, G)

y

Demand Real Power(A, B, C, 3ф)

y

Demand Reactive Power(A, B, C, 3ф)

8.4.2. Trigger Time y

5, 10, 15, 20, 30, 60 Minute

8.4.3. Storage Capacity y

Stores 1024 events

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8.4.4. Related Setting Menu 1) ON/OFF Setting Load Profile can be set ON/OFF by user. PRIMARY SETTING / RELAY SETUP \ EVENT RECORDER \ Load Profile [EVENT RECORDER] Fault Cycle: ON Len' of Pre F: 4 >Load Profile: ON

Range

OFF, ON

Default ON

Step

~

ON : Records load profile. OFF : No record of load profile.

2) Recording time interval setting PRIMARY SETTING / RELAY SETUP \ EVENT RECORDER \ L.P save time(m) [EVENT RECORDER] Len' of Pre F: 4 Load Profile: ON >L.P save time(m):15

Range

5, 10, 15, 20, 30, 60 min

Default 15

Step

~

Sets the interval time between Records.

3) Stored value Clear Select “LOAD PROFILE” in “PRIMARY SETTING / RELAY SETUP / CLEAR SAVED DATA” to clear.

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8.4.5. Interface software Interface software shows load profile data.

Figure 8-4. Load Profile Data showed by Interface Software

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9. COMMUNICATION 9.1. OVERVIEW EVRC2A has three ports for communication. The EVRC2A has the front panel RS232 port, the side panel RS232 port, and the side panel RS485/422 port. Each data byte is transmitted in an asynchronous format consisting of 1 start bit, 8 data bits, 1 stop bit, and no parity bit. The baud rate is independently programmable for communications port 2. Baud rates of 1200, 2400, 4800, 9600, and 19200 are available. Table 9-1. Communication Ports of EVRC2A Port

Type

Speed

Parity bit

Data bit

Stop bit

Location

COM 1

RS-232

19200 bps

No parity

8

1

User Interface Front Panel

COM 2

RS-232

1200 - 19200 bps

No parity

8

1

User Interface Side Panel

1200 - 19200 bps

None, Odd, Even

7, 8

1, 2

User Interface Side Panel

RS-485 COM 3 RS-422

COM 1 A port to interface with Interface Software. COM 2 – Option A port to remotely operate with DNP Protocol, user can change Interface Speed and DNP Protocol. A complete description of DNP services is in “Appendix F. DNP 3.0 DEVICE PROFILE” COM 3 – Option MODBUS (Communication Protocol)

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9.2. RTU Communication Setup (DNP 3.0 Protocol) - Option EVRC2A can be programmed for communication using the DNP 3.0 through communication port2 For details, refer to “Appendix F - H” Move to “PRIMARY SETTING / RELAY SETUP / COMMUNICATION” to select setting for DNP Protocol. PRIMARY SETTING / RELAY SETUP / COMMUNICATION / Line Speed [DNP3.0-COM2] >Line Speed: 1200 Line Type: 4 D/L confirm: SOME

Range

1200, 2400, 4800, 9600, 19200 Bps

Default 1200 bps

Step

~

Select the baud rate for DNP3.0 Communication.

PRIMARY SETTING / RELAY SETUP / COMMUNICATION / Line Type [DNP3.0-COM2] Line Speed: 1200 >Line Type: 4 D/L confirm: SOME

Range

2, 4 Wire

Default 4

Step

4

Select the type of communication wire.

PRIMARY SETTING / RELAY SETUP / COMMUNICATION / D/L Confirm [DNP3.0-COM2] Line Speed: 1200 Line Type: 4 >D/L confirm: SOME

Range

NO, YES, SOME

Default SOME

Step

~

Select the data link confirmation mode desired for response sent by the EVRC2A. NO : Never confirm request YES : Always confirm request SOME : Data link confirmation is only requested when the response contains more than one frame

PRIMARY SETTING / RELAY SETUP / COMMUNICATION / D/L Retries [DNP3.0-COM2] D/L confirm: SOME >D/L Retries: 0 D/L Timeout: 15

Range

0, 1, 2

Default 0

Step

1

Enter the number of retries that will be issued for a given data link layer.

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PRIMARY SETTING / RELAY SETUP / COMMUNICATION / D/L Timeout [DNP3.0-COM2] D/L confirm: SOME D/L Retries: 0 >D/L Timeout: 15

Range

1 ~ 255 sec

Default 15 sec

Step

1 sec

Enter a desired timeout. If no confirmation response is received within this time and if retries are still available, the EVRC2A will resend the frame.

PRIMARY SETTING / RELAY SETUP / COMMUNICATION / A/L Retries [DNP3.0-COM2] D/L Retries: D/L Timeout: >A/L Retries:

Range 0 15 0

0, 1, 2

Default 0

Step

1

Select the number of retries that will be issued for a given application link layer.

PRIMARY SETTING / RELAY SETUP / COMMUNICATION / A/L Timeout [DNP3.0-COM2] D/L Timeout: A/L Retries: >A/L Timeout:

Range 15 0 15

1 ~ 255 sec

Default 15 sec

Step

1 sec

Enter an Application layer timeout.

PRIMARY SETTING / RELAY SETUP / COMMUNICATION / PowUp Unsol [DNP3.0-COM2] A/L Retries: 0 A/L Timeout: 15 >PowUpUnsol: DISABLE

Range

DISABLE, ENABLE

Default DISABLE

Step

1

Select the unsolicited mode Enable : Unsolicited response is transmitted. Disable : Unsolicited response is not transmitted.

PRIMARY SETTING / RELAY SETUP / COMMUNICATION / Unsol time [DNP3.0-COM2] A/L Timeout: 15 PowUpUnsol: DISABLE >Unsol time: 5

Range

0 ~ 255 sec

Default 5 sec

Step

1 sec

Enter the minimum time from when unsolicited event occurred.

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PRIMARY SETTING / RELAY SETUP / COMMUNICATION / Master Addr [DNP3.0-COM2] PowUpUnsol: DISABLE Unsol time: 5 >Master Addr: 65534

Range

0 ~ 65535

Default 65534

Step

1

Enter the master station address.

PRIMARY SETTING / RELAY SETUP / COMMUNICATION / SBO Time [DNP3.0-COM2] Unsol time: 5 Master Addr: 65534 >SBO Time: 15

Range

1 ~ 255 sec

Default 15 sec

Step

1 sec

Enter the duration of the select/operate arm timer.

PRIMARY SETTING / RELAY SETUP / COMMUNICATION / DNP Address [DNP3.0-COM2] Master Addr: 65534 SBO Time: 15 >DNP Address: 1

Range

0 ~ 65535

Default 1

Step

1

Enter the slave (EVRC2A) address.

PRIMARY SETTING / RELAY SETUP / COMMUNICATION / Multi Inter [DNP3.0-COM2] Master Addr: 65534 SBO Time: 15 >Multi Inter: 0.10

Range

0.01 ~ 300.00 sec

Default 0.10 sec

Step

0.01 sec

Enter a time delay between frames when Multi-frame replies.

PRIMARY SETTING / RELAY SETUP / COMMUNICATION / Tx Delay [DNP3.0-COM2] SBO Time: 15 Multi Inter: 0.10 >Tx Delay : 0.05

Range

0.00(OFF), 0.01 ~ 300.00 Sec

Default 0.05 sec

Step

0.01 sec

Delay time of sending Real data after RTS Signal is on.

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PRIMARY SETTING / RELAY SETUP / COMMUNICATION / RTS Off Dly [DNP3.0-COM2] Multi Inter: 0.10 Tx Delay : 0.05 >RTS Off Dly: 0.05

Range

0.01 ~ 300.00 sec

Default 0.05 sec

Step

0.01 sec

Enter the turn-off time of RTS signal. In other words, it’s a time delay to prohibit the last data loss after sending data. Usually Turn-OFF time is set to 1 or 2 Byte carrier occurrence time

PRIMARY SETTING / RELAY SETUP / COMMUNICATION / CTS Chk Out [DNP3.0-COM2] Tx Delay : 0.05 RTS Off Dly: 0.05 >CTS Chk Out: 5.00

Range

0.01 ~ 300.00 Sec

Default 5.00 sec

Step

0.01 sec

Enter a waiting time between outgoing RTS(Request To Send) signal and incoming CTS(Clear To Send) signal. In other words, before sending a data, it’s a time interval to wait until CTS signal becomes High after sending RTS signal High.

PRIMARY SETTING / RELAY SETUP / COMMUNICATION / DCD Timeout [DNP3.0-COM2] RTS Off Dly: 0.05 CTS Chk Out: 5.00 >DCD Timeout: 5.00

Range

0.01 ~ 300.00 sec

Default 5.00 sec

Step

0.01 sec

Enter the minimum time from when a DNP request is received and a response issued.

PRIMARY SETTING / RELAY SETUP / COMMUNICATION / VOC1 Lev(%) [DNP3.0-COM2] CTS Chk Out: 5.00 DCD Timeout: 5.00 >VOC1 Lev(%): OFF

Range

0(OFF), 1 ~ 50 %

Default OFF

Step

1

Enter the Value of change event 1 setting. OFF : Not used

PRIMARY SETTING / RELAY SETUP / COMMUNICATION / VOC1 Min(CT) [DNP3.0-COM2] DCD Timeout: 5.00 VOC1 Lev(%): OFF >VOC1 Min(CT): 0.50

Range

0.04 ~ 3.20 ( xCT Phase Ratio)

Default 0.50

Step

Enter the Value of change event 1 limit Value.

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PRIMARY SETTING / RELAY SETUP / COMMUNICATION / VOC2 Lev(%) [DNP3.0-COM2] VOC1 Lev(%): OFF VOC1 Min(CT): 0.50 >VOC2 Lev(%): OFF

Range

0(OFF), 1 ~ 50 %

Default OFF

Step

1

Enter the Value of change event 2 setting. OFF : Not used

PRIMARY SETTING / RELAY SETUP / COMMUNICATION / VOC2 Min(VT) [DNP3.0-COM2] VOC1 Min(CT): 0.50 VOC2 Lev(%): OFF >VOC2 Min(VT): 0.10

Range

0.00 ~ 1.25 xVT

Default 0.10

Step

0.01

Enter the Value of change event 2 limit Value

PRIMARY SETTING / RELAY SETUP / COMMUNICATION / VOC3 Lev(%) [DNP3.0-COM2] VOC2 Lev(%): OFF VOC2 Min(VT): 0.10 >VOC3 Lev(%): OFF

Range

0(OFF), 1 ~ 50 %

Default OFF

Step

1

Enter the Value of change event 3 setting. OFF : Not used

PRIMARY SETTING / RELAY SETUP / COMMUNICATION / VOC3 Min [DNP3.0-COM2] VOC2 Min(VT): 0.10 VOC2 Lev(%): OFF >VOC3 Min: 0

Range

0~60000

Default 0

Step

1

Enter the Value of change event 3 limit Value.

PRIMARY SETTING / RELAY SETUP / COMMUNICATION / Class 1 [DNP3.0-COM2] VOC3 Lev(%): OFF VOC3 Min: 0 >Class 1: DISABLE

Range

DISABLE, ENABLE

Default DISABLE

Step

~

Select the unsolicited response mode of Class 1 events.

PRIMARY SETTING / RELAY SETUP / COMMUNICATION / Class 2 [DNP3.0-COM2] VOC3 Min: 0 Class 1: DISABLE >Class 2: DISABLE

Range

DISABLE, ENABLE

Default DISABLE

Step

~

Select the unsolicited response mode of Class 2 events.

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PRIMARY SETTING / RELAY SETUP / COMMUNICATION / Class 3 [DNP3.0-COM2] Class 1: DISABLE Class 2: DISABLE >Class 3: DISABLE

Range

DISABLE, ENABLE

Default DISABLE

Step

~

Select the unsolicited response mode of Class 3 events.

PRIMARY SETTING / RELAY SETUP / COMMUNICATION / Time Req(m) [DNP3.0-COM2] Class 2: DISABLE Class 3: DISABLE >Time Req(m): 1440

Range

0(OFF), 1~30000 minute

Default 1440 minute

Step

Enter the Time Synch’ Request Interval.

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RECLOSER CONTROL EVRC2A

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9.3. RTU Communication Setup (MODBUS Protocol) - Option EVRC2A can be programmed for communication using the MODBUS through communication port3. Move to “PRIMARY SETTING / RELAY SETUP / COMMUNICATION” to select setting for MODBUS Protocol. PRIMARY SETTING / RELAY SETUP / COMMUNICATION / Line Speed [MODBUS-COM3] >Line Speed: 1200 Parity Chk: NONE Data Bit: 8

Range

1200, 2400, 4800, 9600, 19200 bps

Default 1200 bps

Step

~

Select the baud rate for MODBUS Communication.

PRIMARY SETTING / RELAY SETUP / COMMUNICATION / Parity Chk [MODBUS-COM3] Line Speed: 1200 >Parity Chk: NONE Data Bit: 8

Range

NONE, ODD, EVEN

Default NONE

Step

~

Select the Parity Check.

PRIMARY SETTING / RELAY SETUP / COMMUNICATION / Data Bit [MODBUS-COM3] Line Speed: 1200 Parity Chk: NONE >Data Bit: 8

Range

7, 8

Default 8

Step

~

Select the Data Bit.

PRIMARY SETTING / RELAY SETUP / COMMUNICATION / Stop Bit [MODBUS-COM3] Parity Chk: NONE Data Bit: 8 >Stop Bit: 1

Range

1, 2

Default 1

Step

~

Select the Stop Bit.

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PRIMARY SETTING / RELAY SETUP / COMMUNICATION / Modbus Type [MODBUS-COM3] Data Bit: 8 Stop Bit: 1 >Modbus Type: RTU

Range

RTU, ASII

Default RTU

Step

~

Select the Modbus protocol type.

PRIMARY SETTING / RELAY SETUP / COMMUNICATION / Slave Address [MODBUS-COM3] Stop Bit: 1 Modbus Type: RTU >Slave Address: 1

Range

1 ~ 254

Default 1

Step

1

Enter the Modbus address.

PRIMARY SETTING / RELAY SETUP / COMMUNICATION / Line Type [MODBUS-COM3] Modbus Type: RTU Slave Address: 1 >Line Type: 422LINE

Range

485LINE, 422 LINE

Default 422 LINE

Step

~

Select the Modbus line type.

PRIMARY SETTING / RELAY SETUP / COMMUNICATION / Tx Delay [MODBUS-COM3] Slave Address: 1 Line Type: 422LINE >Tx Delay: 0.05

Range

0.00(OFF), 0.01 ~ 300.00 sec

Default 0.05 sec

Step

0.01

Delay time of sending Real data after RTS Signal is on.

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9.4. RTU Communication Setup (DNP 3.0 & MODBUS Protocol) Option PRIMARY SETTING/RELAY SETUP/COMMUNICATION / REMOTE METHOD / Select [REMOTE METHOD] >Select: DNP3.0

Range

DNP3.0, MODBUS

Default DNP3.0

Step

Select remote protocol.

DNP 3.0 Move to “PRIMARY SETTING / RELAY SETUP / COMMUNICATION / COMM SETTING / DNP 3.0-COM2” to select setting for DNP Protocol. (Please refer to “9.2. RTU Communication Setup (DNP 3.0 Protocol) - Option” for more detail) MODBUS Move to “PRIMARY SETTING / RELAY SETUP / COMMUNICATION / COMM SETTING / MODBUS-COM3” to select setting for MODBUS Protocol. (Please refer to “9.3. RTU Communication Setup (MODBUS Protocol) - Option” for more detail)

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10. INSTALLATION 10.1. User Interface Door and Power Switch

Figure 10-1. User Interface Door and Power Switch User Interface Door User Interface Door has two magnets upper and down(or top and bottom).To open the door, pull the handle. Control Power Switch After opening the User Interface Door, you see 2 Switches. Left side switch is for Battery Power, right side one is for AC Power. Turning on either one of two activates control. AC Power Outlet For user convenience, AC Power Outlet is located on User Interface Door. Fuse is installed for safety from overload. Location of fuse is referred to “Figure 10-5. Inner Structure”

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10.2. Vent and Outer Cover

Figure 10-2. Air Vent and Outer Cover Outer Cover It is for blocking the direct ray of light to delay raising temperature inside of Control Cubicle. The gap between control cubicle and cover is 10mm. Air Vent To protect control part from humidity by temperature fluctuation, Vents are on left and right side covered with Outer Cover.

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10.3. Dimensions and Mounting Plan

Figure 10-3. Dimensions and Mounting Plan y

EVRC2A has Small size and Large size depending on Recloser Type.

y

Small size is available for EVR1, EVR2, Large size is available for EVR3.

y

Large size is able to make “User available Space” larger, the space unit is referred to “Figure 10-6”

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y

Standard for EVR1, EVR2 is small size and for EVR3 is large size.

y

EVR1 (Recloser Rated Voltage : 15.5㎸) / EVR2 (27㎸) / EVR3 (38㎸)

y

For installation on a Pole, the lifting hole is indicated.

y

Weight of EVRC2A small size is 85㎏ and large size is 90㎏.

y

EVRC2A should be fixed top and bottom with 16㎜(5/8") Bolt.

y

There is an Exit hole for external cable that can be connected to additional functioning hardware.

y

The diameter of the hole is 22㎜(0.866") and two of Standard Receptacle "MS22" Series can be extended.

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10.4. Earth Wiring Diagram

Figure 10-4. Earth Wiring Diagram y

After installation of Control cubicle, connect the ground.

y

Earth Terminal can connect with core of cable size up to 12㎜(0.470") diameter.

y

Earth cable from Pole Neutral and from EVRC2A Earth Terminal must be connected to the ground.

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10.5. Inner Structure

Figure 10-5. Inner Structure Controller Power NFB (No Fuse Breaker) Left side switch is for Battery and right side one is for 220Vac. Heater Optional Heater is 40W Battery Use 2 of 12Vdc in series. Use (＋) screwdriver for replacement. Fuse TF1, TF2, TF3 are for circuit protection, refers to (see “10.21. FUSE”) Terminal Block Place for AC Power line, there are two ports for user. User Available Space Space for additional hardware connection. Installation and space size refers to “Figure 10-6”

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10.6. Mount Accessories Dimensions

Figure 10-6. Mount Accessories Dimensions y

Shows base plate measurements that can be attached in User Available Space.

y

On Base plate, 10㎜/M6 Nut is used to fix the base plate.

y

Available space for height of base plate is from 101.6㎜ (4”) to 177.8㎜ (7”)

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10.7. User-Available DC Power Table 10-1. User-Available DC Power Voltage Rating

Voltage Range

Maximum Power output

Positions

24Vdc

20∼25Vdc

30W Continuous

Side Panel CN5

15Vdc

14.0∼15.5Vdc

70W 10second

(1-VCC/+)

12Vdc

11.0∼12.5Vdc

Short 1second

(2-AGND/-)

Standard Voltage : 12Vdc / User can select Voltage Rating y

30W DC Power is provided. In case of the necessity of larger than 30W, additional power should be attached. For more details, contact manufacturer. Input of the additional power is referred to “Figure 10-7. Terminal Block and Fuses”

y

Remove cable coating at the end of cable length of 8mm(0.315＂). With using (＋) CN5 connector terminal on side panel should be connected to Wire size AWG24 up to 12.

y

To change Voltage ratings, disconnect Jumper Pin in JP3 “Figure 10-31”, and connect Jumper Pin to either JPI (24Vdc) or JP2 (15Vdc). Be sure of the voltage rating due to disassembly.

y

When overload, automatically circuit breaks current. In case long-term overload time, there is a fuse on analog circuits to protect circuits from failure.

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10.8. Terminal Block and Fuses

Figure 10-7. Terminal Block and Fuses y

Caution for an electric shock due to AC Power loaded in Terminal block.

y

Standard AC Power is 220Vac.

y

AC Power input terminal 1, 2 are connected from Receptacle to Terminal block. Terminal 3 is the ground.

y

Terminal 4, 5 are for connecting additional AC Power. Terminal 4 is connected with TF3 for protection, terminal 5 is in series with AC Power

y

On TF3 Fuse, AC Power Outlet is connected with 40W Heater. Reference for branching.

y

In AC line connection, blue wired line is for Neutral, white wired line is for Phase wire, green wired line is for the ground.

y

Terminal 6, 7, 8 are spare for Recloser 52 contact.

y

Terminal 9, 10 are for User Available Terminal block. In need of more terminals, use User Available Space.

52 Contact Auxiliary Specs Rating (Resistive load) : 30Vdc 5A / 125Vdc 0.6A / 250Vdc 0.3A

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10.9. EVRC2A Wiring Diagram - CVD Type

Figure 10-8. EVRC2A Wiring Diagram - CVD Type y

Wiring diagram of EVRC2A standard.

y

CN1 has different system wirings depending on User system. In “Figure 10-8”, CN1 is marked as Earthing System. For non-Earthing system, refer to “Figure 10-11”

y

CN2 is Voltage Input Connector. “Figure 10-8” is CVD (Capacitor Voltage Divider) type and “Figure 10-9” is VT type.

y

VT type is standard and CVD type is for optional. CVD type and VT type are not exchangeable.

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10.10. EVRC2A Wiring Diagram - VT Type

Figure. 10-9 EVRC2A Wiring Diagram - VT Type y

“Figure 10-9” is wiring diagram of VT type of which Voltage Input is optional.

y

CN2 is Voltage Input Connector. For wiring, refer to “Figure 10-13”

y

CVD type and VT type are not exchangeable. VT type is standard and CVD type is optional.

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10.11. Side Panel Current Inputs IA,IB,IC,IN,SEF CN2 Voltage Inputs VA,VB,VC,VL CN3 AC24V IN Relay Module AC Power Input CN4 BATT` IN Relay Module DC Power Input CN5 POWER OUT - Option User-Available DC Voltage Source CN6 CONTROL Recloser Open, Close CN7 UPS Monitors and controls Close and Trip Power CN8 RECLOSER STATUS Open, Close, Lock, Pressure CN9 CN10 OUTPUTS and INPUTS - Option OUT1~OUT5(A Contact) OUT6~OUT7(B Contact) OUT8(ALARM) IN01~IN08 PORT2 - Option SERIAL RS232 PORT3 - Option SERIAL RS485/422 NOTE : 1) I/O Terminal (CN10, CN9) has functions to control basic operation of Recloser and can be connected with SCADA System for use. 2) Remove the coating of cable length of 8㎜ (0.315"). Side panel connector for user should be connected to Wire size AWG24 to 12

Figure 10-10. Side Panel

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10.12. Current Inputs Wiring Diagram Current IG is connected with Side Panel IG(A07,A08)

in

Earthing

System.

SEF(A09,A10) should be connected, so called “JUMPER” IG Input Current Range y

0.5A Nominal

y

2A continuous

y

25A 1 second

y

Burden : 0.19VA(0.5A)

Current IG should be connected with SEF(A09,A10) of Side Panel in. Non Earthing System. IG(A07,A08) should be connected to each other. SEF Input Current Range y

0.05A Nominal

y

0.16A Continuous

y

0.6A 1 second

y

Burden : 0.0375VA(0.05A)

Figure 10-11. Current Inputs Wiring Diagram

Recloser Phase should match with User system. Refer to “Figure 10-15” CT Phase rotation must be arranged comparing with Voltage Inputs Phase rotation.

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10.13. Capacitor Voltage Divider Type Voltage Inputs Wiring Diagram (EPR LOAD SIDE CVD - Option) - Option

Figure 10-12. CVD Wiring Diagram y

CVD (Capacitor Voltage Divider) measures Voltage with using Capacitor installed in each Bushing of Recloser.

y

CVD Type is Optional type. VT (Voltage Transformer) Type is Standard. CVD Type and VT Type are not exchangeable.

y

Current Inputs and Voltage Inputs should be the same phase. If CT Inputs changed Phase rotation, Voltage Inputs phase should be re-arranged.

y

Option CVD 15㎸, 27㎸, 38㎸ Class

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10.14. Voltage Transformer Type Voltage Inputs Wiring Diagram Standard

Figure 10-13. VT Wiring Diagram y

CVD Type can not be used when VT(Voltage Transformer) Type was selected. VT Type is Standard

y

VT wiring should match Current Inputs.

y

For Load Side VT wiring, refer to “Figure 10-14”

y

Voltage Inputs VA, VB, VC and VL Load side „ Input Voltage Range : Vphase-Vcom Continuous < 300V „ Burden : 0.6VA(300V), 0.2VA(220V), 0.05VA(120V), 0.02VA(67V)

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10.15. Load Side VT Wiring Diagram - Option

Figure 10-14. VL Wiring Diagram y

Load Side VT check synchronism for Phase.

y

Phase B should be connected to VL2(Vcom) in Non Earthing System.

y

Voltage Input Range : VL1-VL2 Continuous < 300V „ Burden : 0.6VA(300V), 0.2VA(220V), 0.05VA(120V), 0.02VA(67V)

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10.16. Current and Voltage Inputs Phase Rotation

Figure 10-15. Phase Rotation y

For Metering accuracy, phase rotations of User system and Recloser should be the same.

y

“Figure 10-15” shows the same phase rotation between User System and Recloser.

y

If the phase rotation is not the same in User system and Recloser, correct CT and CVD wiring in side panel to be matched.

y

186

EVR Recloser phase A is the Bushing the nearest from Trip lever on the side.

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10.17. Control Cable Receptacle Pin Descriptions Table 10-2. Control Cable Receptacle Pin Descriptions Pin

Function

Pin

Function

A

C.T Phase C

a

52 common(Auxiliary)

B

C.T Phase B

b

52b(Auxiliary)

C

C.T Phase A

c

52a(Auxiliary)

D

C.T Common(G)

d

Close and Trip Coil Common

E

CVD Source Phase C

e

Close and Trip Coil Common

F

CVD Source Phase B

f

Close and Trip Coil Common

G

CVD Source Phase A

g

Close Coil

H

Ground(CVD Load side Phase T)

h

Close Coil

J

Ground(CVD Load side Phase S)

j

Close Coil

K

CVD Load side Phase R

k

not connected

L

Pressure Sensor Output(controller input)

m

Trip Coil

M

not connected

n

not connected

N

Pressure Sensor Power AGND

p

Trip Coil

P

Pressure Sensor Power 12Vdc

r

Trip Coil

R

Cable shield and Ground

s

not connected

S

not connected

T

Recloser Status 69b(locked a connect)

U

Recloser Status Common(24Vdc)

V

Recloser Status 52b(Monitored Trip)

W

Recloser Status 52a(Monitored Close)

X

not connected

Z

not connected

y

Control EVRC2A Receptacle : MS3102 28-21S(Female)

y

Recloser Receptacle : MS3102 28-21P(Male)

y

Control Cable : Shield Cable 8meter(31.5”)

y

Cable Shielding layer is connected to Pin “R”

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Figure 10-16. Control Receptacle “Figure 10-16” shows Female Receptacle installed in Control EVRC2A.

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10.18. Control Cable Assembling / De-assembling y

Do not turn Plug body when Control Cable assembling/de-assembling.

y

For Control Cable assembling, connect with Receptacle check based with Pin Guide position. Following notices are suggested. „ Turn Plug nut clockwise carefully to prevent Pin winding or out of gearing. „ Push Plug Body little by little with shaking left and right side into Receptacle; repeat this to complete connection. „ Turn Plug nut to tighten for Control Cable de-assembling, do the opposite way of Control Cable assembling

Figure 10-17. Recloser Receptacle

Figure 10-18. Control Cable

10.19. AC Power Receptacle Pin Descriptions Table 10-3. AC Power Receptacle Pin Descriptions Pin

Function

A

AC Power Input

B

AC Power Input (Neutral)

C

not connected

Standard Input Voltage of Control EVRC2A is 220Vac.

Figure 10-19. Power Receptacle

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10.20. AC Power Cable TYPE : MS22-2S(Female) Cable Length : 2C-3.5㎟ 6meter(236") A PIN Wire Color : White(Phase) B PIN Wire Color : Black(Neutral) C PIN : not connected

10.21. FUSES Table 10-4. Fuses Positions

Rating /

Dimensions

Purpose

7A/220Vac

0.25×1.25"

Input Line of Transformer in UPS

15A/110Vac

(6.385×31.75)㎜

3A/220Vac

0.25"×1.25"

6A/110Vac

(6.385×31.75)㎜

Control EVRC2A AC Power.

0.25"×1.25"

AC Power outlet and Heater

External AC - Power Input

Terminal Block TF1 Module AC Power Input Line of Transformer in

Terminal Block TF2

Terminal Block TF3

10A (6.385×31.75)㎜

Inside Relay Module F1

0.197"×0.787" 1A

(Analog board)

Trip Control (5×20)㎜

Inside Relay Module F2

0.197"×0.787" 1A

(Analog board)

Close Control (5×20)㎜

Inside Relay Module F3

0.197"×0.787" 2A

(Analog board)

Relay Module Power (5×20)㎜

Inside Relay Module F4

0.197"×0.787" 5A

(Analog board)

190

User Available AC Power

User-Available DC Power (5×20)㎜

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10.22. Battery and Control run time Table 10-5. Battery Specs Maker

Global & Yuasa Battery Co., Ltd.(Made in Korea)

Battery Type

ES18-12

Nominal Voltage

12V

Nominal capacity

18 amp-hours

Dimension

181×76×167㎜(7.126×3×6.575")

Self-discharge Versus Time

12 month at +20℃(+68℉), 5 month at +40℃(+104℉)

Service life Time

3∼5 years at +20℃(+68℉), 1 years at +50℃(+122℉)

Battery Connector(CN11)

Molex Connector 3191-2R

Controller run time

30 hours at +20℃(+68℉), 15 hours at -25℃(-13℉)

Recharge Time

60 hours at +20℃(+68℉)

y

Sealed lead - acid Battery Type, use 12Vdc 2 Batteries in series.

y

Harness connector(CN11) from Battery Terminal is connected to battery switch NFB1. In order to store Battery for a long time, turn NFB1 “OFF” without disconnecting Harness connector.

y

The self-discharge rate of batteries is approximately 3% per month when batteries are stored at an ambient temperature of +20℃(+68℉). The self-discharge rate varies with ambient temperature.

y

The approximate depth of discharge or remaining capacity of an battery can be empirically determined from “Figure

y

10-21” Figure 10-20. Battery

Turn off NFB1 to disconnect Battery from circuits. Remove Battery Connector CN11(3191-2R) and measure the battery voltage. If the battery voltage is less than 22.5Vdc, the residual capacity is 0%. The voltage can be recharged but requires maintenance.

y

24Vdc Battery supplies Relay Module and UPS Module through NFB1(Battery Switch). Relay Module supplies through CN4 Connector in Side Panel and UPS Module supplies through P2 Connector of UPS Module.

Figure 10-21. Open Circuit Voltage

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10.23. Charge Circuit Charger uses current-control-circuit to prevent sudden-recharge and use voltage-steady-circuit to prevent over-recharge. Charge inspection use 24Vac the same power as Relay Module has. Disconnecting CN11 may cause spark, turn off NFB1(Battery Switch) and NFB2(Ac Power switch) before disconnect CN11. Limit Current measuring should be tested on 10Ω in series with CD Ammeter. Charge Voltage : 27.5Vdc(±0.5V) Charge Current : 300mAdc(±50mAdc)

10.24. Battery Change Battery Mounting consists of two of Bolt M6-15L. Battery Wire consists of M5 Bolt & Nut and is connected to Battery Terminal. Bolt can be replaced using with (+) screwdriver. For Battery wire de-assembling, disconnect Jumper wire first and disconnect CN11 wire(red and black). When CN11 is disconnected first, battery short is considered in case of worker’s mistake. For Battery wire connection, connect CN11 wire (red and black) first and connect Jumper wire later. Reference “Figure 10-20”

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10.25. COMMUNICATIONS 1) RS232 Pin Functions for Port1 and Port2 Table 10-6. RS232 Pin Functions for Port1 and Port2 Pin

Serial Port1

Serial Port2

Definition

1

N/C

DCD

Data Carrier Detect

2

RXD

RXD

Receive Data

3

TXD

TXD

Transmit Data

4

N/C

DTR

Data Terminal Ready

5

GND

GND

Ground

6

N/C

DSR

Data Set Ready

7

N/C

RTS

Request To Send

8

N/C

CTS

Clear To Send

9

N/C

N/C

No Connection

Positions

User Interface Panel(Male)

Side Panel (Male)

Cable

CC201

CC201,202,203

Purposes

Maintenance

DNP Figure 10-22. RS232 Port

2) RS485/422 Pin Functions for Port3 Table 10-7. RS485/422 Pin Functions for Port3 Pin

Serial Port3

1

RS485+

2

RS485-

3

TR1(120Ω)

4

RS422TX+

5

RS422TX-

6

TR2(120Ω)

7

SHIELD

8

N/C

9

IRIG-B(+)

10

IRIG-B(-)

Positions

Side Panel (Male)

Purposes

Modbus

Figure 10-23. RS485/422 Port

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10.26. COMMUNICATION CABLES 1) Cable CC201: Connect to Computer

Figure 10-24. Cable CC201 (connect to computer) 2) Cable CC202: Connect to Modem, etc. - option

Figure 10-25. Cable CC202 (connect to modem, etc.) 3) Cable CC203: Connect to Modem, etc. - option

Figure 10-26. Cable CC203 (connect to modem, etc.)

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10.27. Hardware Block Diagram

Figure 10-27. Hardware Block Diagram

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10.28. Recloser Trip and Close Circuits

Figure 10-28. Recloser Trip and Close Circuits CC

Close Coil

TC

Trip Coil

MC

Magnetic Contactor

C

Capacitor

IGBT

Insulated Gate Bipolar Transistor

F

Fuse

UPS

Uninterruptible Power Supply

y

Recloser Trip and Close Power is charged from C1, C2, C3 in UPS module.

y

C1 is used for Trip power, C2, C3 are used for Close power.

y

Trip(Close) runs when IGBT is “ON”. MC runs and the charged Capacitor transfer the Power to TC(CC), eventually Recloser runs.

y

196

F1, F2 are Fuses to protect IGBT from MC damage. These are on Analog Board.

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10.29. Uninterruptible Power Supply for Trip & Close

Figure 10-29. UPS Module Block Diagram y

UPS Module charges Capacitor for Trip/Close. Its rated output voltage is 120Vdc.

y

Trip and Close Capacitor are individually located and do not affect to each other during Trip and Close.

y

UPS Module runs by 120Vac Power or by Backup Battery.

y

Transformer in EVRC2A connected with External AC Power generates 120Vac.

y

Sealed lead-acid Type is used for Battery. Battery voltage does not run under 20Vac, runs over 20Vdc.

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10.30. MAIN BOARD

Figure 10-30. MAIN BOARD Indicates Firmware Upgrade Port, RTC(Real Time Clock), and main parts location. Also indicates backup battery type.

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10.31. ANALOG BOARD

Figure 10-31. ANALOG BOARD y

JP1, JP2, JP3 are Jumper Connecter, defining User Available DC Power Output Rating.

y

F1, F2 are use to protect IGBT for Close and Trip.

y

F3 is for Relay Module protection.

y

JP1, JP2, JP3 are Jumper Connectors and define User Available DC Power rating.

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10.32. Recloser EVR Wiring Diagram

Figure 10-32. Recloser EVR Wiring Diagram Recloser EVR standard wiring diagram y

CT Protection is automatically protected when Control Cable is disconnected.

y

The capacity of CVD is 20㎊, and also automatically protected when Control Cable is disconnected.

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10.33. Recloser EPR Wiring Diagram

Figure 10-33. Recloser EPR Wiring Diagram Recloser EPR standard wiring diagram y

CT Protection is automatically protected when Control Cable is disconnected.

y

The capacity of CVD is 26㎊, and also automatically protected when Control Cable is disconnected.

y

Load side CVD-Option.

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10.34. Recloser Current Transformer (CT) Table 10-8. Current Transformer (CT) Description

Pin

Function

A

C.T Phase C

CT Ratio : (1000:1/standard)

B

C.T Phase B

CT Resistance < 5Ω

C

C.T Phase A

D

C.T Common(G)

10.35. Recloser Capacitor Voltage Divider (CVD) Table 10-9. Capacitor Voltage Divider (CVD) Description

Pin

Function

E

CVD Source Phase C

EVR RECLOSER

F

CVD Source Phase B

1) Pin R is connected to Ground.

G

CVD Source Phase A

2) CVD Capacitance : 20㎊

H

CVD Load side Phase T

3) For CVD Protection, MOV is connected between

J

CVD Load side Phase S

K

CVD Load side Phase R

R

Cable shield and Ground

EPR RECLOSER

E

CVD Source Phase C

1) Pin R is connected to Ground.

F

CVD Source Phase B

2) CVD Capacitance of Source Phase : 26㎊

G

CVD Source Phase A

3) CVD Capacitance of Load side Phase : 20㎊

K

CVD Load side Phase R

R

Cable shield and Ground

Phase and Ground.

(Option) 4) For CVD Protection, MOV is connected between Phase and Ground. y

For voltage measuring, use High Impedance AC Voltmeter(Digital Multimeter) at Output Pin.

y

Voltage Measuring Method 1 measure MOV voltage. (measure a voltage between MOV arms)

y

Voltage Measuring Method 2 Place the capacitor(C2) in parallel with MOV. and

Figure 10-34. CVD Wiring Diagram

measure MOV voltage.

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10.36. Recloser Pressure Sensor (Only EVR Type) Table 10-10. EVR Pressure Sensor Description

Pin

Function

L

Pressure Sensor Output

1) Sensor Power is delivered from

N

Pressure Sensor Power AGND

Pin P(+12Vdc±0.5 %) and N(-)

P

Pressure Sensor Power 12Vdc

2) Sensor Output is Pin L(+) and N(-) 3) SF6 Gas is the insulating material and is affected by depending on pressure (density). 4) “Figure 10-35” shows pressure changes depending on temperature and Sensor Output voltage depending on pressure. 5) EVR has 0.5bar at 20 ℃

Figure 10-35. Pressure Changes depending on Temperature and Sensor Output voltage

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10.37. Recloser 52 contact and 69 contact Table 10-11. 52 contact and 69 contact Description

Pin

69 is b Contact when unlocked.

Function

T

69b(Monitored locked)

U

Common(52 and 69)

V

52b(Monitored Trip)

W

52a(Monitored Close)

a

52 common(Auxiliary)

b

52b(Auxiliary)

c

52a(Auxiliary)

10.38. Recloser Trip and Close Coil Table 10-12. Trip and Close Coil Description

Pin

Function

d

Close and Trip Coil Common

1) Pin d, e and f are combined as one line.

e

Close and Trip Coil Common

2) Pin g, h and j are combined and placed as one

f

Close and Trip Coil Common

g

Close Coil

h

Close Coil

j

Close Coil

4) Close Coil Resistance : < 5Ω

m

Trip Coil

5) Trip Coil Resistance : < 2Ω

p

Trip Coil

r

Trip Coil

line 3) Pin m, p and r are combined and placed as one line.

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10.39. Recloser Test Kit 1) RTS 2001 Model tests EVRC2A by Fault Simulation. 2) RTS 2001 can display Full Sequence of Trip time, Trip current, Interval on LCD screen and also can variously test Calibration Mode, OCR Mode, External Mode, Manual Mode.

Figure 10-36. User Interface Panel

Figure 10-37. Recloser Test Kit

Standard Ratings and Features Table 10-13. Standard Ratings and Features CLASSIFICATION

RATINGS AND FEATURES

Power

AC220V/2A 50/60HZ

Weigh

Body (11㎏), Aluminum case (6㎏), Cable (2㎏), Total weight (19㎏) Aluminum case : 500×500×240 (19.68"×19.68×9.45")

Dimensions Body : 450×300×200 (17.72"×11.82×7.88") Output Current

Maximum_10Arms / 25VA(10A/0.25Ω)

Output Voltage

Maximum_20Vpkpk / 200㎃ Continuous / 1A 10second

Recloser Control Interface

Cable 6M(23.6")

Ammeter/Voltage

±1% (±3 digit)

Time difference

±1/2 cycle

Scope Terminal

Max. current(10A), 10V (±3%, 10% at 1.5 Bar)

3. Replace Relay Module

GAS HIGH 4. Replace Recloser A/D converter REF1V FAIL

Reference voltage 1

Replace A/D Converter Module

FAIL SYSTEM RESTART A/D converter REF2V FAIL

Reference voltage 2

Replace A/D Converter Module

FAIL SET CHANGE

Setting Changed

No problem

RESTART

System restarted

No problem

Parallel EEPROM MEMORY

P-ROM FAIL

Replace Main Processing Module FAIL Serial EEPROM

COMMUNICATION

S-ROM FAIL

Replace Main Processing Module FAIL

D-RAM FAIL

Data RAM FAIL

Replace Main Processing Module

S-RAM FAIL

Setting RAM FAIL

Replace Main Processing Module

R-RAM FAIL

RTC NV RAM FAIL

Replace Main Processing Module

RTC FAIL

RTC Time FAIL

Replace Main Processing Module

RTC BAT LO

RTC Battery LOW

Replace RTC Battery 1. Execute All Clear Event

I-VAL FAIL

Initial Value FAIL

2. Execute System Restart 3. Replace Main Processing Module

I-SET FAIL

Initial Setting Value

1. Execute System Restart

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LCD TEXT

EXPLANATION FAIL

RECOMMENDED ACTION 2. Replace Main Processing Module

Communication C-BD FAIL

Option

Replace Communication Module

Board FAIL COLD RST

Cold Restarted

No problem

11.2. Malfunction Events The following table of events describes the malfunction events available from the control and what they indicate. It also suggest steps to follow to assist in determining why the event was generated. EVENT

DESCRIPTION

POSSIBLE CAUSE

RECOMMENDED ACTION 1 Connection state of control cable 2. control Box inside CN8 connection state check - Table 10-2

Control Cable

- Figure 10-8 - Figure 10-9

- Figure 10-10 - Figure 10-16 Reference 3. control Box inside CN6 connection state check

OPERATION FAIL

Operation Fail - Figure 10-8 - Figure 10-9 - Figure 10-10 Reference 1.That control switch point of contact check 2. control Box inside FUSE state check Etc..

- Figure 10-31 Reference 3. Replace Relay Module 4. Replace Recloser 1 Connection state of control cable 2. control Box inside CN1 connection state

Current measure

check

Fail of current & Control Cable

- Table 10-2 - Figure 10-8

- Figure 10-9

voltage measurement - Figure 10-10 - Figure 10-16 Reference Voltage meaasure

208

1 Connection state of control cable 2. control Box inside CN2 connection state

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check - Table 10-2 - Figure 10-8 - Figure 10-9 - Figure 10-10 - Figure 10-16 Reference

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