6

CLIENT : RELIANCE INDUSTRIES LTD.

EQUIPMENT DESIGN

PROJECT : IDC & UTILTIY BLCOK

ENGINEERS

DOCUMENT NUMBER MH-IDMHMUMB001-E-SP-004 SHEET NO.

TECHNICAL SPECIFICATIONS-CUMDATA SHEETS FOR 6.6 KV SWITCHGEAR

REVISION NO. ISSUED FOR PREPD.BY/DATE CHKD. BY/DATE APPD. BY/ DATE

R0 REVIEW APPROVAL AP : 06/11/07 PSL : 06/11/07

/

1 OF 23

SPECIFICATIONS CUM DATA SHEETS FOR EQUIPMENT DESIGN ENGINEERS

6.6 KV SWITCHGEAR CLIENT : RELIANCE INDUSTRIES LTD.

DOCUMENT NUMBER MH-IDMHMUMB001-E-SP-004 SHEET NO.

2 OF 23

1 SCOPE...................................................................................................................................................................................3 2 SYSTEM PARTICULARS..................................................................................................................................................3 3 AMBIENT CONDITIONS ................................................................................................................................................3 4 APPLICABLE STANDARDS.............................................................................................................................................4 5 CONSTRUCTIONAL FEATURES....................................................................................................................................5 6 BUSBARS

........................................................................................................................................................................7

7 CIRCUIT BREAKERS.......................................................................................................................................................8 8 PROTECTIVE RELAYS ....................................................................................................................................................9 9 CTS AND PTS ..................................................................................................................................................................12 10 INDICATING TYPE TEMPERATURE SCANNER....................................................................................................12 11 METERS...........................................................................................................................................................................13 12 CONTROL AND SELECTOR SWITCHES ................................................................................................................13 13 INDICATING LAMPS.....................................................................................................................................................14 14 PUSH BUTTONS.............................................................................................................................................................14 15 EARTH BUS & EARTHING..........................................................................................................................................14 16 LABELS & NAME PLATES..........................................................................................................................................14 17 CONTROL WIRING.......................................................................................................................................................15 18 TERMINAL BLOCK.......................................................................................................................................................15 19 WINDOW TYPE FACIA ANNUNCIATORS ...............................................................................................................16 20 TESTS AND TEST REPORTS.......................................................................................................................................17 21 QUALITY ASSURANCE PLAN ...................................................................................................................................17 22 REFERENCE DRAWING ATTACHED........................................................................................................................17 23 DRAWINGS AND DOCUMENTS SCHEDULE .........................................................................................................18 24 BILL OF MATERIALS...................................................................................................................................................19

SPECIFICATIONS CUM DATA SHEETS FOR EQUIPMENT DESIGN ENGINEERS

1

6.6 KV SWITCHGEAR CLIENT : RELIANCE INDUSTRIES LTD.

DOCUMENT NUMBER MH-IDMHMUMB001-E-SP-004 SHEET NO.

3 OF 23

SCOPE

This specification cover the design, material construction features, manufacture, inspection and testing at the vendor's/his sub-vendor's works, delivery to site and performance testing of metal clad switchgear rated 6.6 kV.

2

3

SYSTEM PARTICULARS 1.0 2.0 3.0 4.0 5.0

Rated voltage No of phases and wires Rated Frequency Voltage Variation Frequency Variation

: : : : :

6.6KV 3 phase. 3 wire 50Hz +/- 10% +/- 3%

6.0

Combined voltage and frequency variation

:

+/- 10%

7.0

6.6 kV System neutral earthing

:

Through

8.0 9.0

6.6 kV System fault level Short time withstand capacity

: :

Resistor (Effectively Unearthed) 250 MVA at 6.6KV 21.87 KA r.m.s for 1.0 sec

Neutral

AMBIENT CONDITIONS

3.1

Altitude Ambient Temperature

Less than 1000 M. above Mean Sea Level 400 C (Indoor)

Grounding

SPECIFICATIONS CUM DATA SHEETS FOR EQUIPMENT DESIGN ENGINEERS

4

6.6 KV SWITCHGEAR CLIENT : RELIANCE INDUSTRIES LTD.

DOCUMENT NUMBER MH-IDMHMUMB001-E-SP-004 SHEET NO.

4 OF 23

APPLICABLE STANDARDS

The switchgear and its components shall conform to the latest applicable standards specified below. In case of conflict between standards and this specification, this specification shall govern.

Circuit Breakers

Title

Code No. IS 13118 / BS 5311 / IEC 56, 694

Metal Enclosed switchgear Current Transformers Voltage Transformers Arrangement for Switchgear

IS IS IS IS

Busbars,

Main

3427 / BSEN60298 / IEC298 2705 / BS 7626 3156/BS 7625/IEC 186 5578, 11353

Connections and Auxiliary wiring Busbar Support insulators Degree of Protection

IS 2544 / BS 3297 / IEC 273 IS 13947 (Part 1) / IEC 947-1 / BSEN

Electrical Relays for Power system protection

60529 IS 3231, 3842 / BS 142 /

Electrical Indicating Instruments High Voltage Fuses AC Electricity Meters Specification for copper rods and bars for electrical

IEC 255 IS 1248 / BS 89 / IEC 51 IS 9385 / BS 2692 / IEC 282 IS 722, 8530 / BS 5685 / IEC 145, 211 IS 613

purposes Code of practice for phosphating iron and steel Alternating current Switches for voltages above 1000

IS 6005 / BS 3189 IS 9920 / IEC 129, 265 & 298

V Toggle switches Code of practice for selection, installation and

IS 3452 / BS 3676 IS 10118

maintenance of switchgear and control gear Control switches

IS6875/BSEN 60947/IEC 947

SPECIFICATIONS CUM DATA SHEETS FOR EQUIPMENT DESIGN

6.6 KV SWITCHGEAR CLIENT : RELIANCE INDUSTRIES LTD.

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5

DOCUMENT NUMBER MH-IDMHMUMB001-E-SP-004 SHEET NO.

5 OF 23

CONSTRUCTIONAL FEATURES

Sr.

Description

Requirement

Bidder’s

5.1

Switchgear Construction

Compartmentalized

5.2 5.3 5.4 5.5 5.5.1

Installation Degree of protection Sheet steel Sheet steel thickness Base frame / channel

5.5.2

Load bearing members

2mm

5.5.3

Internal partitions, doors

1.6mm

5.6 5.7

etc Type of assembly Surface treatment

Bolted 7 tank for removal of rust, scale, oil, grease & dirt

Confirmation Floor

mounting,

free-

standing, dust and vermin-proof Indoor IP 4X CRCA 3mm

by pickling followed by phosphating followed by 2 coats of zinc rich primer Powder Coated Epoxy with paint shade RAL 7032 60 micron

5.8 5.9

Surface finish Minimum thickness

5.10 5.11 5.12

powder coating Cable entry Gland Plate Version – Fixed or draw

Bottom 3 mm thick undrilled Draw out

5.13

out Panel accessories

Space heater with thermostat + MCB, cubicle

5.14

Provision

5.15

extension Safety Interlocks

5.15.1

for

of

future

lamp controlled by a switch, socket outlet Required for extension on both sides Required with following interlocks Compartment door of a breaker shall not open unless the associated breaker is in open position.

SPECIFICATIONS CUM DATA SHEETS FOR EQUIPMENT DESIGN

6.6 KV SWITCHGEAR CLIENT : RELIANCE INDUSTRIES LTD.

ENGINEERS Sr.

Description

DOCUMENT NUMBER MH-IDMHMUMB001-E-SP-004 SHEET NO.

Requirement

6 OF 23

Bidder’s Confirmation

Caution name plate, 'Caution Live Terminals'

5.15.2

shall be provided at all points where the terminals are likely to remain live and isolation is possible only at remote end. Safety interlocks to prevent the circuit breaker

5.15.3

from being racked In / racked Out of ‘Service’ position when the breaker is closed. Before racking In/Out, the breaker should Trip first. Interlock to prevent the circuit breaker in

5.15.4

Test/Isolated position from being racked in to ‘Service’ position with compartment door open. Circuit breaker cubicles shall be provided with

5.15.5

safety shutters operated automatically by the movement of the circuit breaker carriage to cover the exposed live parts when the breaker is withdrawn. Interlock to prevent the breaker from Closing

5.15.6

unless the control circuit is complete through isolating contacts. Breaker carriage should be earthed before

5.15.7

racking in service position. While racking out, the earthing shall be disconnected last after

5.16

Measures

for

prevent

spread of arc over bus

breaker is racked out. Required Bidder to illustrate the arrangement offered.

bar from one panel to

5.17

other panel Segregation

between

Required

5.18

control and power cabling Pressure relief

Required

arrangement in case of

Bidder to illustrate the arrangement offered.

built up pressure due to fault inside the panel

SPECIFICATIONS CUM DATA SHEETS FOR EQUIPMENT DESIGN

6.6 KV SWITCHGEAR CLIENT : RELIANCE INDUSTRIES LTD.

ENGINEERS

6

DOCUMENT NUMBER MH-IDMHMUMB001-E-SP-004 SHEET NO.

7 OF 23

BUSBARS

Sr.

Description

Requirement

Bidder’s

6.1 6.2 6.3 6.4

Material Continuous current rating For Main Switchgear Cross Sectional Area

Electrolytic Aluminium

6.5 6.6

mm² Shape and size mm Short time withstand

* 21.87 kA r.m.s for 1.0

6.7

capability Dynamic

55.77 kA peak

6.8

capability Insulation for bus bars

6.9 6.10 6.11

Bus bars Configuration Bus bar Location Insulation level for the

6.12

switchgear Power

6.13

withstand Impulse

6.14

withstand Bus bar temperature rise

Final temperature of 850C for bus bars and

while

900C for joints with an ambient of 400C

Confirmation

withstand

frequency voltage

carrying

rated

1250A *

sec

Raychem’s heat shrinkable bus bar insulation (fully insulated) As per IS 375 Top of the panel

22 kV rms 60 kV peak

6.15

current Bus bar

6.16 6.17 6.18 6.19

Insulator Material Voltage Class Basic insulation level kV Minimum Creepage

supports are not acceptable) * * * * (Not less than 25 mm/KV)

6.20

distance mm Earth bus material and

50x6 AL

size

Supports

SMC, DMC or cast resin . (Hylam / Bakelite

*

*

SPECIFICATIONS CUM DATA SHEETS FOR EQUIPMENT DESIGN

6.6 KV SWITCHGEAR CLIENT : RELIANCE INDUSTRIES LTD.

ENGINEERS

7 Sr.

DOCUMENT NUMBER MH-IDMHMUMB001-E-SP-004 SHEET NO.

CIRCUIT BREAKERS Requirement Vacuum Refer S.L.D. enclosed 3 Draw – out Motorised

7.6.1

Description Type of circuit breakers Rated (Name plate) Current No. of poles Execution Mechanism Control Supply Voltage Spring charging Motor

7.6.2

Closing and tripping coil

110V DC

7.7

CB mechanical indications

`ON’, `OFF’, “Service”, “Test”, “Isolated”,

7.8

(flags) CB operation facility

“Spring charged” a) Emergency

7.1 7.2 7.3 7.4 7.5 7.6

8 OF 23

Bidder’s Confirmation

240V AC

mechanical

Trip

available on the door, mechanical Close for testing (shrouded type) b)

Manual charging facility of CB

operation spring 4 NO + 4 NC for purchaser’s use, wired to

7.9

Spare Auxiliary contacts

7.10 7.10.1

Minimum clear space at Front for breaker withdrawal

*

7.10.2

Rear

*

7.11

Requirement

7.11.1

suppressor Type

Gapless, Zinc Oxide

7.11.2

Class

Rotating Machine class

terminal block

of

surge

Required for switching of motors by VCBs

EQUIPMENT DESIGN

CLIENT : RELIANCE INDUSTRIES LTD.

ENGINEERS

8 A] Sr.

8.1

PROJECT : IDC & UTILTIY BLCOK

SHEET NO.

9 OF 23

PROTECTIVE RELAYS GENERAL Description Type

Requirement Numerical for

Bidder’s Confirmation main

protective

relays,

8.2 8.3 8.4

DOCUMENT NUMBER MH-IDMHMUMB001-E-SP-004

Supply Voltage Rated Current Protection Functions

Electromagnetic for auxiliary relays 110V DC 1A As per S.L.D. Drawing no: RIIDMHMUMB001-E-DN-003 and Bill

8.5

No. of output contacts

of Materials enclosed As required. Self reset for all relays

8.6

Operation indicator

except for Master-trip relays. Required. LED display for each function for numerical relays. Hand reset flag indicator for auxiliary relays

SPECIFICATIONS CUM DATA SHEETS FOR EQUIPMENT DESIGN ENGINEERS

6.6 KV SWITCHGEAR CLIENT : RELIANCE INDUSTRIES LTD.

B]

SPECIFIC REQUIREMENTS

1.

NEMA Type Designation

2.

3.

4.

SHEET NO.

10 OF 23

94

Function

Anti-pumping

Type

Self reset

No. of contacts

As required for control scheme

NEMA Type Designation

DOCUMENT NUMBER MH-IDMHMUMB001-E-SP-004

95

Function

Trip Circuit Supervision in breaker On/OFF conditions

No. of contacts

As required, to initiate Trip Circuit Unhealthy alarm

NEMA Type Designation

86

Function

High speed Trip and Lock Out

No. of contacts

As required. Hand reset type.

Operating time

less than 20 ms.

NEMA Type Designation

51

Function

3 Pole IDMT non-directional over-current elements

Characteristics

Normal Inverse/Very Inverse/Extremely Inverse- site selectable

Setting Range - Current - Time multiplier

5.

NEMA Type Designation Function

50-200% of rated current 0-1 sec.

51N 1 Pole IDMT non-directional earth fault element, for use in residual circuit of CTs

Characteristics

Normal Inverse/Very Inverse/Extremely Inverse- site selectable

Setting Range - Current - Time Multiplier

20-80% of rated current 0-1 sec.

SPECIFICATIONS CUM DATA SHEETS FOR EQUIPMENT DESIGN ENGINEERS

6.

6.6 KV SWITCHGEAR CLIENT : RELIANCE INDUSTRIES LTD.

NEMA Type Designation Function

DOCUMENT NUMBER MH-IDMHMUMB001-E-SP-004 SHEET NO.

11 OF 23

51G 1 Pole IDMT non-directional earth fault element for use in transformer neutral grounding circuit

Characteristics

Normal Inverse/Very Inverse/Extremely Inverse- site selectable

Setting Range - Current - Time Multiplier 7.

NEMA Type Designation Function

20-80% of rated current 0-1 sec. 64R The relay shall be high impedance, circulating current type, stabilized against external faults. Over-voltage limiting devices shall be provided as required. The relay shall be used for Restricted Earth Fault protection.

Operating time Stability

Less than 20 ms. Stable against external faults

Setting Range - Current 8.

NEMA Type Designation

10-40% of rated current -

Function

Comprehensive Motor Protection

Protections

- Thermal Replica type Overload (49) - Instantaneous Overcurrent for protection against short circuit (50) - Stalled Rotor protection (50 + 2) - Negative Phase Sequence Overcurrent / Protection against single phasing - Earth fault Protection.

SPECIFICATIONS CUM DATA SHEETS FOR EQUIPMENT DESIGN ENGINEERS

9

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DOCUMENT NUMBER MH-IDMHMUMB001-E-SP-004 SHEET NO.

12 OF 23

CTS and PTS

Sr.

Description Construction Ratio

Requirement Cast resin As per S.L.D.

Rated VA burden

RI-IDMHMUMB001-E-DN-

9.3 9.4

Accuracy Class Short time rating Version

003 21.87 kA r.m.s for 1.0 sec Bar primary / window type as

9.5

CT shorting, earthing and testing

per manufacturer’s standard Required

9.6

facility Execution for VTs

Single phase, draw-out type,

9.1 9.2

Bidder’s Confirmation Drawing no:

mounted on a withdrawable

9.7

Overvoltage factor for VTs

trolley Suitable

9.8

Primary (MV) side protection for

Neutral system HRC fuse

9.9

VTs Secondary (LV) side protection for

MCB

for

Unearthed

VTs

10 INDICATING TYPE TEMPERATURE SCANNER Sr. 10.1

10.1

Description Type of Input No. of channels

Requirement Pt-100 RTDs 6 nos. winding RTD channels

10.2 10.3 10.4

Channel Group 1 Channel Group 2 Output contacts

2 nos. bearing RTD channels A & T Settable independent A & T Settable independent 1 no. potential-free for each of the above conditions

Bidder’s Confirmation

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DOCUMENT NUMBER MH-IDMHMUMB001-E-SP-004 SHEET NO.

13 OF 23

11 METERS Sr.

11.1

Description Range

Requirement Suitable for CTR & PTR as per S.L.D.

Drawing

no:

11.2

MULTI-FUNCTION

IDMHMUMB001-E-DN-003 Required with RS 485

11.2.1

METERS CTR and PTR

communication port As per S. L. D. enclosed

11.2.2

Functions required

Line

currents,

Line

Bidder’s Confirmation

RIserial

voltages,

Frequency, Power Factor, kW/ kVA/ kVAr,

kWH

with

M.D.

in

kW,

harmonic analysis

12 CONTROL and SELECTOR SWITCHES Sr.

12.1 12.2

Description ASS to select VSS to select

Requirement I(R), I(Y), I(B), OFF ( 4 Pos.) V(RY), V(YB), V(BR), OFF

12.3

Auto/Manual to select

(4 Pos.) Auto or Manual mode. Stay-

12.4

Local / Remote to select

put type Local or

12.5

Breaker Control switch

Stay-put type Trip - Neutral - Close, Spring

Remote

return to Neutral.

mode.

Bidder’s Confirmation

SPECIFICATIONS CUM DATA SHEETS FOR EQUIPMENT DESIGN ENGINEERS

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DOCUMENT NUMBER MH-IDMHMUMB001-E-SP-004 SHEET NO.

14 OF 23

13 INDICATING LAMPS Sr.

13.1 13.2 13.3 13.4 13.5 13.6 13.7 13.8 13.9

Description Type Rated voltage Lens colours Red : C.B. “ON” Green : C.B. “OFF” White : “Trip Supply Supervision” Amber : Auto trip White : “Spring Charged” RYB : Phase Indication

Requirement Cluster LED As per control scheme

Bidder’s Confirmation

Bidder’s Confirmation

14 PUSH BUTTONS Sr.

14.1

Description Type

Requirement Spring return or

14.2

Contacts

type as required 1 NO + 1 NC minimum

stay put

15 EARTH BUS & EARTHING Sr.

15.1

Description Material and size

Requirement 50 x 6 mm.

Electrolytic

Bidder’s Confirmation

15.2

Location

Aluminium Bottom,

Continuous

throughout the length of the

15.3

Equipment earthing

switchboard Panel frame earthing, door earthing, meter cases, CT secondary earthing required as per standard engineering

15.4

Minimum wire size

practice 2.5 sq. mm. stranded copper, Green or Yellow–Green in colour

16 LABELS & NAME PLATES Sr.

16.1

Description Material

Requirement PVC or

Bidder’s Confirmation

16.2

Engraving

Aluminimum Black engraving on white

16.3

Size of the Label

background To suit application

16.4 16.5

Fixing Use

importance With self-tapping screws Main Panel, feeders and

Anodised

/

SPECIFICATIONS CUM DATA SHEETS FOR EQUIPMENT DESIGN

6.6 KV SWITCHGEAR CLIENT : RELIANCE INDUSTRIES LTD.

ENGINEERS Sr.

Description

DOCUMENT NUMBER MH-IDMHMUMB001-E-SP-004 SHEET NO.

15 OF 23

Requirement individual devices

Bidder’s Confirmation

Bidder’s Confirmation

17 CONTROL WIRING Sr.

17.1

Description Wiring spec.

Requirement 660V grade, PVC insulated

17.2

Size

super flexible copper wire 2.5 sq. mm. for CT circuit

17.3

Colour

1.5 sq. mm. for control circuit Black for AC circuits and

17.4

Termination

17.5

terminals / terminal blocks Ferruling

on

equipment

Grey for DC circuit With crimped type, tinned copper lugs Required with detachable

non

type

–

printed

ferrules

18 TERMINAL BLOCK Sr.

18.1 18.2

Description Control terminal size No. of spare control terminals

Requirement 2.5 sq. mm. minimum 10% minimum

Bidder’s Confirmation

SPECIFICATIONS CUM DATA SHEETS FOR EQUIPMENT DESIGN ENGINEERS

6.6 KV SWITCHGEAR CLIENT : RELIANCE INDUSTRIES LTD.

DOCUMENT NUMBER MH-IDMHMUMB001-E-SP-004 SHEET NO.

19 WINDOW TYPE FACIA ANNUNCIATORS Voltage Equipped with

110V DC ‘Sound Cancel’, ‘Acknowledge’ and

Provided with

‘Reset’ push buttons Two lamps connected in parallel on

Suitable for

each facia window Open to Alarm & Close to Alarm –site

selectable Designed for an operating sequence indicated below Alarm Condition Fault Contact Audible Alarm

Visual

Normal Abnormal Sound cancel

Open Closed Closed

or

Off On Off

Alarm Off Flashing Flashing

Acknowledge

Open Closed

or

Off

Steady on

Off Off Off Refer clause 24

Steady on Off Steady on

Open Back to Normal Open Reset Open Lamp Test Open Minimum alarm/annunciation required

*

16 OF 23

SPECIFICATIONS CUM DATA SHEETS FOR EQUIPMENT DESIGN ENGINEERS

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DOCUMENT NUMBER MH-IDMHMUMB001-E-SP-004 SHEET NO.

17 OF 23

20 Tests and Test ReporTs Switchgear shall be fully tested in accordance with the relevant clauses of applicable standards. All components and devices shall be checked for correct operation before dispatch. Tests to be carried out at Manufacturer’s works shall be as mentioned below. For tests designated by symbol “A”:

the Bidder shall furnish valid test certificates.

For tests designated by symbol “B”: Test shall be carried out in presence of the Purchaser or Purchaser’s authorized representative. Sr. a b c d

Test Particulars Assembly inspection Operation test Temperature rise tests for main & auxiliary circuits Power frequency voltage tests on main & auxiliary

Type Test A A A

Routine Test B B B

e f

circuits Impulse voltage test Verification of making & breaking capacity of

A A

-

g h i

circuit breaker Short time current withstand test on main circuit Short time current test on earthing circuits Verification of mechanical endurance of circuit

A A A

-

j

breakers Operation

and

-

B

k

pneumatic devices (as applicable) Measurement of resistance of main circuit of

-

B

l

circuit breakers Verification of Wiring

-

B

tests

of

auxiliary

electrical

21 QUALITY ASSURANCE PLAN The vendor shall submit quality assurance plan for approval by the Purchaser.

22 REFERENCE DRAWING ATTACHED 6.6 KV SWITCHGEAR S.L.D.

: RI-IDMHMUMB001-E-DN-003

SPECIFICATIONS CUM DATA SHEETS FOR EQUIPMENT DESIGN ENGINEERS

DOCUMENT NUMBER MH-IDMHMUMB001-E-SP-004

6.6 KV SWITCHGEAR CLIENT : RELIANCE INDUSTRIES LTD.

SHEET NO.

18 OF 23

23 DRAWINGS AND DOCUMENTS SCHEDULE Documents shall comprise but not limited to the following: Required after Purchase Order Engineering Data

Require

For

No. of

As

d

approva

weeks

built

With

l Qty

No. of weeks

Qty

Bid-Qty 1 2 3

Outline dimension drawing Cross sections with part description Foundation drawings with static & dynamic

4 5 6

loading data Completed Data Sheets Bill of Materials for scope of Supply Performance Data /Curves:/Discharge

7

curves Installation / Operation / Maintenance

8 9 10 11 12

Manual Priced Spare List for 10 years service Terminal point schedule / drawing Control Schematic Diagram Description of Control Sequences Type test certificate for short circuit

13

withstand for panel Type test certificate for short circuit

14 15

breaking current of circuit breaker At the time of inspection Test Certificates for bought out items (Breaker, CT, PT, Meter, Relay)

2

4

2

6

6

2

4

2

6

6

2 2 2

4

2

6

6

3

With dispatch

6 6

6 6

6 6

At the time of

2 4 4

2 2

2 2

inspection

SPECIFICATIONS CUM DATA SHEETS FOR EQUIPMENT DESIGN

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ENGINEERS

DOCUMENT NUMBER MH-IDMHMUMB001-E-SP-004 SHEET NO.

19 OF 23

24 BILL OF MATERIALS The switchgear shall have two bus sections with a bus sectionalizer between two bus sections. A]

BUS – A and BUS – B

Two bus sections each of rating 6.6 kV, 1250A, 21.87 kA (250MVA) for 1 second. B]

INCOMING FEEDERS

1]

2 nos. incomer feeders to receive power from 11/6.9 KV, 12.5 MVA transformers. One incomer

each on Bus-A and Bus-B. Each feeder shall comprise: 

3 nos. Potential transformers 6600/√3 V / 110/√3 V, 25 VA, Cl. 1.0, cast resin type complete with 6.6 kV side HRC fuses. PT shall be draw-out type connected to Incoming line side



3 nos. Indicating lamps ‘R’, ‘Y’ and ‘B’ for phase indications



1 no. voltmeter 0-7.2 kV, PTR 6600/110V



1 no. Voltmeter selector switch



1nos. 6.6 kV, 1250A 21.87 kA electrically operated (motorized spring charged) Vacuum Circuit Breaker, complete with 240V AC operated spring charging motor and 110V DC operated closing and tripping coils with adequate nos. of auxiliary NO and NC contacts wired up to terminal block.



1 no. Anti-pumping relay / contactor for above



1 no. Trip Circuit supervision relay as per spec. above



1 no. Breaker control switch, Trip-Neutral-Close



1 no. Local / Remote selector switch, stay put type



3 nos. Indicating Lamps for CB status ‘R’, ‘G’, ‘A’ for CB ON, OFF, TRIP



2 nos. Indicating Lamps ‘Red’ & ‘White’ for CB in Service indication and spring charged indication respectively.



1 no. High speed tripping relay, with 3 NO + 1 NC hand reset contacts, hand reset flag indicator.



3 : Current transformers 1250 / 1-1-1-1 A, cast resin type Core 1 – 7.5 VA, Cl. 1.0 for metering Core 2 – 15 VA, Cl. 5P10 for O/C + E/F protections Core 3 – Cl. PS for Transformer REF protection Core 4 – Cl. PS for Transformer differential protection

SPECIFICATIONS CUM DATA SHEETS FOR EQUIPMENT DESIGN

6.6 KV SWITCHGEAR CLIENT : RELIANCE INDUSTRIES LTD.

ENGINEERS

DOCUMENT NUMBER MH-IDMHMUMB001-E-SP-004 SHEET NO.

20 OF 23



1 no. Microprocessor based Digital Multi-function meter (Load Manager) as per spec. above



1 no. Protective relay, numerical type providing following functions - 3 Pole IDMT non-directional over-current elements (51) with current setting range of 50-200%, Normal Inverse characteristic. - 1 Pole IDMT non-directional earth fault element with current setting range of 20-80% for use in residual circuit of CTs (51N) - 1 Pole IDMT non-directional earth fault element with current setting range of 20-80% for use in transformer neutral grounding circuit. (51G) With LED operation indicators and self reset contacts and as per spec. above



1 no. Protective relay, numerical type, for REF protection of 11/6.9 kV transformer (64R). The relay shall be high impedance, circulating current type, stabilized against external faults. Over-voltage limiting devices shall be provided as required.



1 set of auxiliary relays for interlocking scheme between incomers & bus sectionaliser.



1 no. 6 - Window, static type, fascia annunciator complete with ‘accept’, ‘reset’, ‘test’ push buttons, common alarm bell and suitable for 110V DC supply as follows :



-

Window 1 –Transformer REF operated

-

Window 2 – Standby EF Operated

-

Window 3 –Differential protection relay operated

-

Window 4 – OC/EF operated

-

Window 5 – Trip Circuit Unhealthy

-

Window 6 – Spare

1 no. Set of Control MCBs, terminal blocks, etc. as required. The panel shall be suitable for termination of 5 nos. 3C x 300 sq. mm. 6.6 kV(UE), Al / XLPE armoured cables.

C]

2 nos. BUS PT, one each on Bus – A and Bus- B, each comprising: 

3 nos. Potential transformers 6600/√3 V / 110/√3 V, 25 VA, Cl. 1.0, cast resin type complete with 6.6kV side HRC fuses. PT shall be draw-out type connected to outgoing bus bar



3 nos. Indicating lamps ‘R’, ‘Y’ and ‘B’ for phase indications



1 no. voltmeter 0-7.2 kV, PTR 6600/110V



1 no. Voltmeter selector switch



2 nos. voltage sensing (No-voltage/ Undervoltage) relays

SPECIFICATIONS CUM DATA SHEETS FOR EQUIPMENT DESIGN

6.6 KV SWITCHGEAR CLIENT : RELIANCE INDUSTRIES LTD.

ENGINEERS

D]

DOCUMENT NUMBER MH-IDMHMUMB001-E-SP-004 SHEET NO.

21 OF 23

OUTGOING FEEDERS

4 nos. motor outgoing feeders, 2 nos. on Bus – A and 2 nos. on Bus – B, each comprising: 

1nos. 6.6 kV, 630A 21.87 kA electrically operated (motorized spring charged) Vacuum Circuit Breaker, complete with 240V AC operated spring charging motor and 110V DC operated closing and tripping coils with adequate nos. of auxiliary NO and NC contacts wired up to terminal block.



1 no. Anti-pumping relay / contactor for above



1 no. Trip Circuit supervision relay as per spec. above



1 no. Breaker control switch, Trip-Neutral-Close



1 no. Local / Remote selector switch, stay put type



3 nos. Indicating Lamps for CB status ‘R’, ‘G’, ‘A’ for CB ON, OFF, TRIP



2 nos. Indicating Lamps ‘Red’ & ‘White’ for CB in Service indication and spring charged indication respectively.



1 no. High speed tripping relay, with 3 NO + 1 NC hand reset contacts, hand reset flag indicator.



3 nos. Current transformers 100 / 1-1A, cast resin type Core 1 – 7.5 VA, Cl. 1.0 for metering Core 2 – 15 VA, Cl. 5P10 for Motor protections



1 no. Microprocessor based Digital Multi-function meter (Load Manager) as per spec. above



1 no. Protective relay, Numerical type, Comprehensive for motor protection comprising: - Thermal replica type overload protection Site selectable/programmable thermal

overload characteristics ( hot and cold) - Instantaneous over-current for protection against short circuits. - Stalled rotor protection - Negative phase sequence over-current/ protection against single phasing - Earth fault protection With LED display for each protection. 

1 no. Set of surge suppressors, rotating machine class type



1

no.

Temperature

scanner,

8

channel

type,

suitable

for

accepting

Pt-100

inputs

and complete with ‘A’ & ‘T’ contacts. The scanner shall display the channel no. and the temperature. In case the comprehensive motor protection relay has in-built scanner facility, a separate scanner need not be provided. 

1 no. 6 - Window, static type, fascia annunciator complete with ‘accept’, ‘reset’, ‘test’ push buttons, common alarm bell and suitable for 110V DC supply as follows :

SPECIFICATIONS CUM DATA SHEETS FOR EQUIPMENT DESIGN

6.6 KV SWITCHGEAR CLIENT : RELIANCE INDUSTRIES LTD.

ENGINEERS



DOCUMENT NUMBER MH-IDMHMUMB001-E-SP-004 SHEET NO.

-

Window 1 – Electrical Protection Operated

-

Window 2 – Motor Bearing Temperature High

-

Window 3 – Motor Winding Temperature High

-

Window 4 – Trip Circuit Unhealthy

-

Window 5 – Spare

-

Window 6 – Spare

22 OF 23

1 no. Set of control MCBs, terminal blocks, etc. as required. The panel shall be suitable for termination of 2 nos. 3C x 300 sq. mm. 6.6 kV(UE), Al / XLPE armoured cables.

D]

BUS SECTIONALIZER 

1nos. 6.6 kV, 1250A 21.87 kA electrically operated (motorized spring charged) Vacuum Circuit Breaker, complete with 240V AC operated spring charging motor and 110V DC operated closing and tripping coils with adequate nos. of auxiliary NO and NC contacts wired up to terminal block.



1 no. Anti-pumping relay / contactor for above



1 no. Trip Circuit supervision relay as per spec. above



1 no. Breaker control switch, Trip-Neutral-Close



1 no. Local / Remote selector switch, stay put type



3 nos. Indicating Lamps for CB status ‘R’, ‘G’, ‘A’ for CB ON, OFF, TRIP



2 nos. Indicating Lamps ‘Red’ & ‘White’ for CB in Service indication and spring charged indication respectively.



1 no. High speed tripping relay, with 3 NO + 1 NC hand reset contacts, hand reset flag indicator.



3 : Current transformers 1250 / 1-1A, cast resin type Core 1 – 7.5 VA, Cl. 1.0 for metering Core 2 – 15 VA, Cl. 5P10 for OC & EF protections



1 no. Ammeter suitable for CTR 1250/1A



1 no. Ammeter Selector Switch



1 no. Protective relay, numerical type providing following functions - 3 Pole IDMT non-directional over-current elements (51) with current setting range of 50-200%, Normal Inverse characteristic. -

1 Pole IDMT non-directional earth fault element (51N) with current setting range of 20-80% for use in residual circuit of CTs

SPECIFICATIONS CUM DATA SHEETS FOR EQUIPMENT DESIGN

6.6 KV SWITCHGEAR CLIENT : RELIANCE INDUSTRIES LTD.

ENGINEERS



DOCUMENT NUMBER MH-IDMHMUMB001-E-SP-004 SHEET NO.

23 OF 23

1 no. 6 - Window, static type, facia annunciator complete with ‘accept’, ‘reset’, ‘test’ push buttons, common alarm bell and suitable for 110V DC supply as follows : -

Window 1 – Electrical Protection Operated

-

Window 2 – Trip Circuit Unhealthy

-

Window 3 – AC Supply source #1 failed

-

Window 4 – AC Supply source #2 failed

-

Window 5 – Spare

-

Window 6 – Spare



Provision for receiving dual 240V AC and 110V DC supply from two independent sources.



1 no. 4 - Window, static type, facia annunciator complete with ‘accept’, ‘reset’, ‘test’ push buttons, common alarm bell and suitable for 240V AC supply as follows : -

Window 1 – DC Supply source #1 failed

-

Window 2 – DC Supply source #2 failed

-

Window 3 – Spare

-

Window 4 – Spare



1 set of auxiliary relays between Incomer feeders and Bus coupler, for interlocking scheme.



1 no. Set of Control MCBs, terminal blocks, etc. as required.