Test forms for SS

THIS SUBMISSION IS DECLARED TO BE STRICTLY IN

ACCORDANCE WITH THE REQUIREMENTS OF THE CONTRACT

PROJECT DRAWING NUMBER

PH10-1C-10-15-P002

CLIENT NAME

STAMP:

QATAR TRANSMISSION SYSTEM EXPANSION – PHASE 10SUBSTATIONS PACKAGE S5 & S8

CONSULTANT NAME

SUBSTATION NAME / CIRCUIT NAME

COMMON

B 02 Oct, 13 ISSUED FOR CONSTRUCTION T.G. PARK S.T.M S.Y.SUNG

A B 16 June, 13 ISSUED FOR CONSTRUCTION T.G. PARK S.T.M S.Y.SUNG

0 B 24 APR, 13 ISSUED FOR COMMENTS T.G. PARK S.T.M S.Y.SUNG

REV. STAT. DATE DESCRIPTION DRAWN CHECK. APPRO.

CONTRACTOR NAME

MANUFACTUTRE NAME

NA

MANUFACTUTRE DRAWING NUMBER

NA

DRAWING / DOCUMENT TITLE

SAT PROCEDURE AND TEST FORMS FOR 11KV SWGR

SUBSTATIONS: 220/66/11kV 220/66/11kV New Doha-B Super S/S, 220/66/11kV Abu Hamur Super S/S,220/66/11kV Ain Khalid Super S/S, Lusail Development super 3 S/S, 66/11KV Ain Khalid North S/S,

66/11KV Al Wadi West S/S

SCALE N/A SIZE A4 REV. PROJECT DRAWING NUMBER

PH10-1C-10-15-P002SHEET 1 OF 105 SHEETS B

PROJECT NAME: QATAR POWER TRANSMISSION SYSTEM EXPANSION PHASE 10 – SUBSTATIONS PACKAGE S5 & S8

CONTRACT NO.: GTC/371C/2010TITLE:SAT PROCEDURE AND TEST FORMS FOR 11KV SWGR

PAGE: 2 OF 105DOC. NO.: PH10-1C-10-15-P002 REV. B DATE:

HYOSUNG LAHMEYER INTERNATIONAL KAHRAMAA

Signature:Name:Date:



LIST OF CONTENTS

SL. NO. DESCRIPTION PAGE NO.

1 Visual and Dimension check 6

2Power Frequency Withstand Voltage Test

2.1.Insulation Resistance Measurement2.2.High Voltage AC Test

8

3 Measurement of Insulation Resistance for Auxiliary circuit 104 Vacuum Circuit Breaker Test

4.1 Insulation Resistance Measurement4.2 Coil Resistance Measurement4.3 Contact Resistance Measurement4.4 Closing Coil And Tripping Coil Pickup(Operation) Test4.5 Breaker Timing Test4.6 Electrical & Mechanical Operation checks

10

5 Measurement of Contact Resistance for Main Circuit 146 Current Transformer Test

6.1. Incomer Feeder6.1.1 General Checks6.1.2 Insulation Resistance Measurement6.1.3 Polarity Test6.1.4 Winding Resistance Measurement6.1.5 Knee Point Voltage Measurement6.1.6 Ratio Test

6.2.Bus-Section6.2.1 General Checks6.2.2 Insulation Resistance Measurement6.2.3 Polarity Test6.2.4 Winding Resistance Measurement6.2.5 Knee Point Voltage Measurement6.2.6 Ratio Test

6.3.Outgoing Feeder6.3.1 General Checks6.3.2 Insulation Resistance Measurement6.3.3 Polarity Test6.3.4 Winding Resistance Measurement6.3.5 Knee Point Voltage Measurement6.3.6 Ratio Test

6.4.Station Transformer Feeder6.4.1 General Checks6.4.2 Insulation Resistance Measurement6.4.3 Polarity Test6.4.4 Winding Resistance Measurement6.4.5 Knee Point Voltage Measurement

16








6.4.6 Ratio Test

7

Voltage Transformer Test7.1.Incomer Feeder

7.1.1. General Check7.1.2. Insulation Resistance Measurement7.1.3. Polarity Test7.1.4. Winding Resistance Measurement7.1.5. Ratio Test

7.2.Bus VT & Outgoing Feeders7.2.1. General Check7.2.2. Insulation Resistance Measurement7.2.3. Polarity Test7.2.4. Winding Resistance Measurement7.2.5. Ratio Test

44

8Meter Calibration test

8.1. Ammeter Calibration Test8.2. Voltmeter Calibration Test

54

9 CT Secondary Injection Test 56

10 VT Secondary Injection Test 80

11 CT Primary Injection Test 105

Reference Drawings:

S.NO Description Doc.No Approval Status

1 Schematic for 11kV SWGR Incomer feeder PH10-1C-10-15-3-001 A

2 Schematic for 11kV SWGR Bus section PH10-1C-10-15-3-012 A

3 Schematic for 11kV SWGR Cable feeder PH10-1C-10-15-3-008 A

4 Schematic for 11kV SWGR Aux transformer feeder PH10-1C-10-15-3-007 A

5 Schematic for 11kV SWGR Capacitor feeder PH10-1C-10-15-3-009 A

6 Schematic for 11kV SWGR Interlock Diagram PH10-1C-10-15-3-010 I

7 Schematic for 11kv SWGR SYNCRO check PH10-1C-10-15-3-011 B

8 Schematic for 11kv SWGR Bus1 CT Diagram PH10-1C-10-15-3-002 I

9 Schematic for 11kv SWGR Bus2 CT Diagram PH10-1C-10-15-3-006 I

10 Schematic for 11kv SWGR Bus Bar VT Diagram PH10-1C-10-15-3-003 B

11 11KV SWGR General Arrangement Diagram PH10-1C-10-15-2-002 B

12 11KV SWGR Name Plate Diagram PH10-1C-10-15-5-001 I

13 11KV SWGR Outline & Foundation Diagram PH10-1C-10-15-2-001 I








LIST OF TEST INSTRUMENTS

S.NO EQUIPMENT MAKE/TYPE SERIALNUMBER

CALIBRATIONDATE

CALIBRATION DUEDATE

1

2

3

Note: Calibration Certificates will be produced along with the Testing equipments at site during testing activities.








1. VISUAL CHECK

Equipment information

DESCRIPTION INCOMER BUS SECTION OUT GOING

Make SCHNEIDER

Type

Installation INDOOR

Serial no

Rated current 2500 A 3150 A 630A

Rated frequency 50 Hz 50 Hz 50 Hz

Rated voltage 12 kV 12 kV 12 kV

Short time withstand rating 40 KA for 3Sec 40 KA for 3 Sec 40 KA for 3 Sec

Control voltage 110 VDC 110 VDC 110 VDC

Auxiliary voltage 240 VAC 240 VAC 240 VAC

Year of manufacture








Sl.No. DESCRIPTION RESULTS

1 Name Plate InspectionCheck each nameplate according to drawing

2

Space Heater

Check and breaking of wires of heater of HV and LV compartment

Check setting of thermostat

3

Others

3.1. Check doors closing completely

3.2. Check earthing state of doors and frame

3.3. Check all indication lamps of local panel

3.4. Check wiring condition

3.5. Check any joint in middle of wire

3.6. Check terminal block cover

3.7. Check the door limit switches

3.8. Check phase marks

3.10. Check construction and inspection of operating mechanism

4After self test and official test check interlock lever’s set-up and it’s smoothoperation

5 Check cable number tag at cables

6 Check the proper dressing at wire duct

7 Check the cable proper glanding at the panel

8 Check insulation cover on CT&AC/DC supply terminals

9 Conformity of power/control cable connection and identification labels.

10 Check the power/control cable connection and tightness.

11 Check of component pad lock facilities.

12 All TB are numbered at both sides.

2. POWER FREQUENCY WITHSTAND VOLTAGE TEST








Test procedure:1. Carry out Insulation Resistance Test (Before HV).2. Carry out HV Test.3. Carry out Insulation Resistance Test (After HV).

Pre-conditions:1. Check and confirm the CT circuits should be shorted and earthed.2. Check and confirm Bus and line VT are isolated.3. Check and confirm Switchboard is earthed.4. Check all VT Fuse Removed.5. CVD contact shorted at front of Display terminals in each phase of HV test.

(Note: CVD indications to be tested at 6KV AC during the HV test.)Safety Procedures:(i)During the HV test 11kv SWGR Room all the access points are should be closed and locked, No-onenot permitted to remain with in the 11KV SWGR room during testing.(ii) All the energize component will be barricaded off with rigid safety fencing.(iii) 11KV SWGR room and basement as well as all access points are shall be locked.

2.1. IR value measurement:Measure insulation resistance at 5000V DC before and after HV test.

R – YBE in GΩ Y-RBE in GΩ B-RYE in GΩ

Before HV Test

After HV Test

2.2. HVAC test.

This test is to be carried out on each of the phases with respect to earth. AC voltage at 50Hz equal to80% FAT value i.e 22.4kV since this test was carried out at Factory 2.5 times of the line voltage i.e 28 kVfor 1 minute was applied to the conductor with respect to ground. The leakage current is recorded andnoted as mentioned in the below table.(Note: Since this test is carried out in factory. 80% of the 28kV i.e. 22.4 kV shall be applied in sitetest.)

Test Result:HV Test @ 22.4 kV AC for 1 Minutes

Leakage current in mA

0 Sec 30 Sec 1 min

R–YBE

Y-RBE

B-RYE

Criteria: Shall be withstood.








2.2. PARTIAL DISCHARGE TEST DURING HV TEST

(i) All secondary circuit of CT’s must be shorted.(ii) Ground the other two phases through the bus bar at cable chamber and also at the CVD display on the

chamber.(iii) For the selected phases apply 1.1 x E/1.732 Voltage (7.6KV)(iv) Note down the PD value for each panel at the applied voltage.(v) Repeat same procedure for all phases and all the feeders.

S.NO BAY NO Test voltage (kV)Measured values

ResultR-PH Y-PH B-PH

1 A190 6.9KV

2 A170 6.9KV

3 A150 6.9KV

4 A130 6.9KV

Criteria: Should be less than 15 db

2.3. VT RATIO TEST AT RATED VOLTAGE:For Incomer:

Test Results

VT Designation Phase TerminalApplied Primary

Voltage in (V)

CalcSec. Voltage in

(V)

MeasuredSec. Voltage in

(V)% Error

R

1r - 1nr

2r - 2nr

3r - 3nr

Y

1y - 1ny

2y - 2ny

3y - 3ny

B

1b - 1nb

2b - 2nb

3b - 3nb








For Bus VT & Outgoing Feeders:

VTDesignation Phase Terminal

Applied PrimaryVoltage in (V)

CalcSec. Voltage in

(V)

MeasuredSec.Voltage in

(V)% Error

R 1r - 1nr

Y 1y - 1ny

B 1b - 1nb

2.4.CVD INDICATOR TEST:

CVD Indicator test have been tested with 6 kv single phase, check the all condition with individualPhases.

CVD indications tested at 6KV AC VOLTAGE : OK/NOT OK

Remarks:

3. MEASUREMENT OF INSULATION RESISTANCE FOR AUXILIARY CIRCUIT

Insulation Resistance MeasurementThe insulation resistance between Auxiliary circuit and earth shall be measured with 1kV Megger.

Contents Measured value of Insulation Resistance Result Remarks

Between the Auxiliary Circuit and Earth

Criteria: >2MΩ

Remarks:

4. VACUUM CIRCUIT BREAKER TEST

Name Plate Details








Description INCOMER BUS SECTION OUT GOING

Make SCHNEIDER

TypeHVX 12-40-31-E HVX 12-40-31-E HVX 12-40-31-E

Installation INDOOR

Serial no

Rated current 2500 A 3150 A 800A

Rated frequency 50 Hz 50 Hz 50 Hz

Rated voltage 12 kV 12 kV 12 kV

Breaking rating 40 kA 40 kA 40 kA

Control voltage 110 VDC 110 VDC 110 VDC

Auxiliary voltage 240 VAC 240 VAC 240 VAC

Breaker operating sequence O–0.3S-CO–3M-CO O–0.3S-CO–3M-CO O–0.3S-CO–3M-CO

Year of manufacture

4.1. Insulation Resistance Measurement:

Applied Voltage R-PH(GΩ) Y-PH(GΩ) B-PH(GΩ)

5KVPole – Earth(Close)

Pole – Pole(Open)

Criteria: 500MΩ4.2. Coil Resistance Measurement:

Coil Resistance in Ω

Trip Coil

Close Coil

Criteria: 1.Closing Coil : 35.3 to 39.0 Ω2. Opening Coil : 35.3 to 39.0 Ω

4.3. CB Closing & Opening check at reduced control voltage:

CB C .Voltage (110V) A .Volt [Vdc] Time (ms) Result

Close (85%) 93.5V

Open (70%) 77V

Temperature : ºC

4.4. Breaker Timing Test:








Operation R-PH (msec) Y-PH (msec) B-PH( (msec)

Open

Close

Close – Open

Criteria: 1. Closing time : 20 to 50ms2. Opening time: 15 to 35 ms

4.5. Contact Resistance Measurement:

Criteria: 1. For Incomer & Bus Section : < 20 µΩ2. For Outgoing feeder : <55 µΩ

Check List for Print out1.Breaker timing test report

4.6. Electrical & Mechanical Operational checks for Circuit Breaker

4.6.1 Electrical checks

Sl.No Description Remarks4.6.1.1 Rack In / Rack Out4.6.1.2 Spring charge indication4.6.1.3 Spring Charge Mechanism

1.Electrical Operation2.Mechanical operation

4.6.1.4 Current drawn by spring charge motor4.6.1.5 CB Spring Charge Time in Seconds4.6.1.6 Anti-pumping checked4.6.1.7 Open / Close Indication4.6.1.8 Auxiliary Contacts4.6.1.9 Operation of Counter4.6.1.10 Tripping & Closing Operation

Operation Electrical MechanicalTrip

Close

Phase Measured Value (in μΩ)

R-Phase

Y-Phase

B-Phase








4.6.2 Mechanical Operational ChecksSl.No Description Remarks

4.6.2.1

Check the correct closing/opening of the doorsa. Make to VCB at TEST positionb. Un-latch or latch the door latchc. Lift up the door handle to opening the doord. Push down the handle to closing the door

4.6.2.2 Circuit breaker in test and closed condition should not be possible to rack IN.

4.6.2.3 Circuit breaker in service and closed condition should not be possible to rack OUT.

4.6.2.4Circuit breaker in between service and test position should not be possible toClose.

4.6.2.5 Circuit breaker in test position should be possible to close or trip.

4.6.2.6 Circuit breaker in service position should be possible to close or trip.

4.6.2.7 All safety interlocks.

4.6.2.8 Smooth rack in and rack out for the circuit breaker.

4.6.2.9 Mechanical Interlock with Earth Switch

4.6.2.10 Earthing switch cannot be closed when the circuit breaker is in service position.

4.6.2.11 Circuit breaker cannot be Rack IN when the Earthing switch is Closed

4.6.2.12 Circuit breaker interchangeability test

4.6.2.13 Check the CB racking IN/OUT handle inserted properly

The positions of the Withdraw able part are described as,

State Operations possible Operations not possibleWithdraw able truck in serviceposition, switching device ‘ON’

1. Switching device shall be switchedOFF from Local/Remote.2. Switching device shall be switchedOFF from emergency Push button.

1.Removal of the Withdraw abletruck

2.Opening of the door3.Pulling of the LV plug

Withdraw able truck in serviceposition, switching device‘OFF’

1. Removal of the withdraw able truck.2. Switching device shall be switched

OFF from Local/Remote.

1. Opening of the door2. Pulling of the LV plug

Withdraw able truck locatedbetween the service and testpositions

Transfer of the Withdraw able truckto service or Test position

1. Closing of the switching device2. Opening of the door3. Pulling of the LV plug

Withdraw able truck in testposition, switching device ‘ON’

1. Switching device shall be switchedOFF from Local/Remote.

Transfer of the Withdraw abletruck to service position

Withdraw able truck indisconnected position LV plugpulled off, switching device‘OFF’, door open

--

Closing of the door transfer of theWithdraw able truck to serviceposition








5. CONTACT RESISTANCE MEASUREMENT TEST

5.1. Bus Bar Contact ResistanceMake : SCHNEIDER

DC Current Injected : 100 A DCPre-conditions for the measurement of BUSBAR contact resistance:

1. All the breakers are to be kept in service position.2. Close the breakers in the bays through which current injected. And all other should be in open.3. Ensure all the earth switches are in open position.

11KV SWITCHGEAR Ambt Temperature : C

SL.NOBay -1

IdentificationBay -2

IdentificationBay -3

IdentificationR-Ph in

µΩY-Ph in

µΩB-Ph in

µΩ1 A210 A190 ---2 A190 A170 ---3 A170 A150 ---4 A150 A130 ---5 A130 A110 ---6 A110 A18- I/C -1 ---7 A18- I/C -1 A90 ---8 A90 A70 ---9 A70 A50 ---

10 A50 A30 ---11 A30 A10 ---12 A10 A12 – Bus section A2013 A20 A40 ---14 A40 A60 ---15 A60 A80 ---16 A80 A100 ---17 A100 A28 – I/C -2 ---18 A28 – I/C -2 A120 ---19 A120 A140 ---20 A140 A160 ---21 A160 A180 ---22 A180 A200 ---23 A200 A220 ---24 A220 A32 – Bus Section A29025 A290 A31026 A310 A33027 A330 A35028 A350 A3829 A38 A37030 A370 A39031 A390 A41032 A410 A43033 A430 A45034 A450 A470








Note: For the all other test the value is for two breakers & bus.For the test Sl.No 12 the value is for three breakers & bus.

Remarks:

5.2. Earth Switch Contact Resistance MeasurementMake : SCHNEIDER

DC Current Injected : 100 A DCPre-conditions for the measurement of EARTH SWITCH contact resistance:

1. All the breakers are to be kept in test position.2. Close the earth switches in the bay through which current injected, and all other should be in open.

Earth Switch Ambt Temperature : CSL.NO Bay Identification R-Ph in µΩ Y-Ph in µΩ B-Ph in µΩ

1 A210

2 A190

3 A170

4 A150

5 A130

6 A110

7 A18

8 A90

9 A70

10 A50

11 A30

12 A10

13 A12

14 A20

15 A40

16 A60

17 A80

18 A100

19 A28

20 A120

21 A140








22 A160

23 A180

24 A200

25 A220

26 A32

27 A290

28 A310

29 A330

30 A350

31 A38

32 A370

33 A390

34 A410

35 A430

36 A450

37 A470

Remarks:

6. CURRENT TRANSFORMER TEST

6.1. Incomer Feeder

Name Plate Details








Description CT1 (CORE-1) CT1 (CORE-2) CT2 (CORE-1)

Make SCHNEIDER

Type RING

Installation INDOOR

Highest system voltage 12 kV

Short time rating 40 kA for 3Sec

Ratio 2500/1A 2500/1A 3200/1A

Class PX 5P20/1.0 PX

Rated burden(VA) - 15VA -

CT sec. resistance (Rct) at 75cin Ω 8.75≤ 8.75≤ 18≤

Knee point voltage (Vk) in V 230 - 563

I mag at VK/2 in mA ≤30≤ - 18≤

Mfg.Year/Sl.No

R ph

Y ph

B ph

CT SecTerminals

R ph 1S1-1S2 2S1-2S2 S1-S2

Y ph 1S1-1S2 2S1-2S2 S1-S2

B ph 1S1-1S2 2S1-2S2 S1-S2

FunctionMAIN TRF DIFF(87T) +

REFDIR OC+BF

+BCU+METERINGBUS BAR PROTN

(87B/50BF)

6.1.1. General Checks1.General visual inspection :2.Name plate details :3.HV Terminal Marking :4.LV Terminal Marking :








5.Check for tightness of all CT terminals :6.Neutral earthing / Single point earthing :7.Position of P1-towards BUS/FEEDER :8.Check CT Connection with ring type Lugs :9.Check CT wire as per the Schematic diagrams and tightness :

6.1.2 Insulation Resistance Measurement:Minimum Value: 1M/KV Ambt Temperature : ºC

Test Procedure Check the Core to be measured Say Typical X – Y(X is value to be checked, Y is against which value to be checked). Connect X to - Ve Terminal of Megger Connect Y to + Ve Terminal of Megger Select the Voltage Rating of Megger Operate the Megger and record Values

Test Results

DescriptionApplied Voltage (DC)

in VR-PH(GΩ) Y-PH(GΩ) B-PH(GΩ)

Primary –Earth 5000 V

Primary- Secondary 1 5000 V


Secondary 1-Earth 500 V


Secondary 1- Secondary 2 500 V

6.1.3. Polarity Test








(P1 towards (+) ve & P2 towards (-) ve

Test ResultsCT

DesignationCore No Terminal R-PH Y-PH B-PH

CT1 CORE-1 1S1-1S2

CORE-2 2S1-2S2CT2 CORE-1 1S1-1S2

6.1.4. CT Winding Resistance

Test Procedure Isolate primary/ secondary / Neutral earth. Switch on the kit Select the current transformer page As per instructions given by manual enter the test current(0.1A to 1.0A) and Pressing the start button,

the test card displays The deviation of the measurement over time during the period of charging the winding The Kit will automatically performers a discharging of winding after saving the measurement Measures the DC Voltage Measures the Resistance

Test Results

CT Core No Terminal Measured Resistance ( in ohms)








Designation R-Ph Y-Ph B-Ph

At ambT At 75 C At ambT At 75 C At ambT At 75 C

CT1CORE-1 1S1-1S2

CORE-2 2S1-2S2

CT2 CORE-1 1S1-1S2

Ambt Temperature : ºC Temperature at 75 C = Rt (1+0.00393(75-t)Where, 75 : Resistance at 75°C (Ω)

Rt : Resistance at ambient temperature (Ω)t : Ambient temperature (°C)

Criteria: Resistance shall be less than specified CT specification.

6.1.5. Knee Point Voltage measurement

Test Procedure Do the connection as shown fig. Isolate primary/ secondary / Neutral earth. Switch on the kit Select the current transformer page The necessary wiring is only two leads from the voltage output to the open secondary wiring of the CT. After entering the current and voltage limits and pressing the start button, the test card displays. Carry out the test. The knee point will be automatically calculated by the kit. After test an automatic sequence of demagnetization is performed. The test is done using a regulated voltage source. Do the same for all other cores.

Ambt Temperature : ºC








Test Results

CTDesignation

Core No TerminalR-Ph Y-Ph B-Ph

Vk(V)

Imag(mA)

Vk(V)

Imag(mA)

Vk(V)

Imag( mA)

CT1 CORE-1 1S1-1S2

CORE-2 2S1-2S2

CT2 CORE-1 1S1-1S2

Criteria: Accordance with CT specification.

6.1.6. Ratio Test

Test Procedure Do the connection as shown fig. Isolate primary/secondary/neutral earth. Switch on the kit. Select the current transformer page. As per the instruction given by the manual do the activities. After entering primary and the secondary Current values and pressing the start button, the test cord

displays. The Ratio will be calculated automatically by the kit. Do the same procedure for the other phases.Test Results:

R-Phase

CTDesignation Core No Terminal

Injected PrimaryCurrent (A)

Expected Sec.Current (A)

Measured Sec.Current (A) % Error

CT1 CORE-1 1S1-1S2

CORE-2 2S1-2S2

CT2 CORE-1 1S1-1S2








Y-Phase

CTDesignation

Core No TerminalInjected Primary

Current (A)Expected Sec.Current (A)

Measured Sec.Current (A)

% Error

CT1 CORE-1 1S1-1S2

CORE-2 2S1-2S2

CT2 CORE-1 1S1-1S2

B-Phase

CTDesignation

Core No TerminalInjected Primary



% Error

CT1 CORE-1 1S1-1S2

CORE-2 2S1-2S2

CT2 CORE-1 1S1-1S2


Check List for Print out1.CT Ratio and Polarity Test (For all Cores and Taps) :2.Knee point test ( for all cores and taps) :3.Winding resistance test (for all core & taps) :

Remark :








6.2. BUS SECTION6.2.1. Name Plate Details

Description CT 1 – CORE-1 CT 2 – CORE-1 CT 2 – CORE-2

Make SCHNEIDER SCHNEIDER

Type RING RING

Installation INDOOR INDOOR

Highest System Voltage 12 kV 12 kV

Short Time Rating 40 kA for 3Sec 40 kA for 3Sec

Mfg.Year/Sl.No:

R ph

Y ph

B ph

Ratio 3200/1A 3200/1A 3200/1A


Rated burden(VA) - 15 VA -

CT sec.resistance (Rct) at75c in Ω 18Ω 18Ω 18Ω

Knee point voltage (Vk) inV

563V - 563V

I mag at VK/2 in mA 8.8mA - 8.8mA

Mfg.Year/Sl.No

R ph

Y ph

B ph

CT SecTerminals

R ph 1S1-1S2 1S1-1S2 2S1-2S2

Y ph 1S1-1S2 1S1-1S2 2S1-2S2

B ph 1S1-1S2 1S1-1S2 2S1-2S2

Function B/B PROT (87B) OC/EF+BCU+MET B/B PROT (87B)

6.2.1. General Checks








1. General visual inspection :2. Name plate details :3. HV Terminal Marking :4. LV Terminal Marking :5. Check for tightness of all CT terminals :6. Neutral earthing / Single point earthing :7. Position of P1-Towards BUS/FEEDER :8. Check CT Connection with ring type Lugs :9. Check CT wire as per the Schematic diagrams and tightness :

6.2.2. Insulation Resistance Measurement:Minimum Value: 1M/kV

Test Procedure Check the Core to be measured Say Typical X – Y(X is value to be checked, Y is against which value to be checked). Connect X to - ve Terminal of Megger Connect Y to + ve Terminal of Megger Select the Voltage Rating of Megger Operate the Megger and record Values

Test Results- CT 1

CTDesignation

Description Applied Voltage(DC) in V

R-PH(GΩ) Y-PH(GΩ) B-PH(GΩ)

CT 1


Primary-Secondary(Core.1) 5000 V

Secondary (Core.1)- Earth 500 V

Test Results -CT 2








CTDesignation Description

AppliedVoltage

(DC) in VR-PH(GΩ) Y-PH(GΩ) B-PH(GΩ)

CT 2


Primary- Secondary (Core.1) 5000 V

Primary- Secondary (Core.2) 5000 V

Secondary (Core.1) -Earth 500 V

Secondary (Core.2)-Earth 500 V

Secondary(Core.1) &Secondary(Core.2)

500 V

6.2.3. Polarity Test(P1 towards (+) ve & P2 towards (-) ve

Test Procedure Isolate primary/ secondary / Neutral earth. Connect S1 to +ve and S2 to –ve in the meter. Apply 1.5VDC instantaneously to Primary as shown in fig. Monitor the +ve Deflection in the meter.

Test Results

CT Designation Core No Terminal R-PH Y-PH B-PH

CT1-1 CORE-1 1S1-1S2













Test Results

CTDesignation

Core No Terminal

Measured Resistance ( in ohms)

R-Ph Y-Ph B-Ph





Ambt Temperature : ºC Temperature at 75 C = Rt (1+0.00393(75-t))Where, 75: Resistance at 75°C (Ω)










6.2.5. Knee Point Voltage measurementAmbt Temperature : ºC


Test Results

CTDesignation

Core No TerminalR-Ph Y-Ph B-Ph

Vk(V)

Imag(mA)

Vk(V)

Imag(mA)

Vk(V)

Imag( mA)












6.2.6. Ratio Test

Test Procedure Do the connection as shown fig. Isolate primary/secondary/neutral earth. Switch on the kit. Select the current transformer page. As per the instruction given by the manual do the activities. After entering primary and the secondary Current and pressing the start button, the test cord displays. The Ratio will be calculated automatically by the kit. Do the same procedure for the other phases.Test Results

R-Phase

CT Designation Core No TerminalInjected Primary



% Error




Y-Phase




% Error




B-Phase




% Error












Check List for Print out1. CT Ratio and Polarity Test ( For all Cores and Taps ) :2. Knee point test ( for all cores and taps) :3. Winding resistance test (for all core & taps) :

Remark

6.3. Outgoing FeedersName Plate DetailsDescription (CT1) Core 1 (CT1) Core 2 (CT2) Core 1

Make SCHNEIDER

Type RING

Installation INDOOR

Highest System Voltage 12 kV

Short Time Rating 40 kA for 3Sec

Ratio 400 – 300 /1A 400 – 300 /1A 3200/1A

Class 5P20/1.0 PX PX

Rated burden(VA) 15 - 11.5 VA - -

CT sec. resistance (Rct) at75c in Ω 2 - 1.5Ω 1.4 1.05Ω 18Ω

Knee point voltage (Vk)in V

- 425 - 320 563V

I mag at VK/2 in mA - ≤50-70mA 8.8mA

Mfg.Year/Sl.No:

R ph

Y ph

B ph

CT SecTerminals

R ph 1S1-1S3 2S1-2S3 1S1-1S2

Y ph 1S1-1S3 2S1-2S3 1S1-1S2

B ph 1S1-1S3 2S1-2S3 1S1-1S2

Function OC/EF+BCU PILOT WIRE PRTN B/B PROTN (87B)








6.3.1. General Checks1. General visual inspection :2. Name plate details :3. HV Terminal Marking :4. LV Terminal Marking :5. Check for tightness of all CT terminals :6. Neutral earthing / Single point earthing :7. Position of P1-Towards BUS/FEEDER :8. Check CT Connection with ring type Lugs :9. Check CT wire as per the Schematic diagrams and tightness :

6.3.2. Insulation Resistance Measurement:Minimum Value: 1M/KV


Test Results

Description Applied Voltage(DC) in V

R-PH(GΩ) Y-PH(GΩ) B-PH(GΩ)

















Test ResultsCT


CT1

CORE-1 1S1-1S2

1S1-1S3

CORE-22S1-2S2

2S1-2S3

CT2 CORE-1 S1-S2


Test Procedure








Isolate primary/ secondary / Neutral earth. Switch on the kit Select the current transformer page As per instructions given by manual enter the test current(0.1A to 1.0A) and Pressing the start button,


Test Results

CTDesignation

Core No Terminal


R-Ph Y-Ph B-Ph


CT1

CORE-11S1-1S2

1S1-1S3

CORE-22S1-2S2

2S1-2S3

CT2 CORE-1 1S1-1S2





Test Procedure








Do the connection as shown fig. Isolate primary/ secondary / Neutral earth. Switch on the kit Select the current transformer page The necessary wiring is only two leads from the voltage output to the open secondary wiring of the CT. After entering the current and voltage limits and pressing the start button, the test card displays. Carry out the test. The knee point will be automatically calculated by the kit. After test an automatic sequence of demagnetization is performed. The test is done using a regulated voltage source. Do the same for all other cores.

Test Results

CT Designation Core No TerminalR-Ph Y-Ph B-Ph

Vk(V)

Imag(mA)

Vk(V)

Imag(mA)

Vk(V)

Imag( mA)

CT1

CORE-11S1-1S2

1S1-1S3

CORE-22S1-2S2

2S1-2S3

CT2 CORE-1 1S1-1S2

Criteria: Accordance with CT specification.6.3.6. Ratio Test

Test Procedure Do the connection as shown fig. Isolate primary/secondary/neutral earth. Switch on the kit. Select the current transformer page. As per the instruction given by the manual do the activities. After entering primary and the secondary Current and pressing the start button, the test cord displays. The Ratio will be calculated automatically by the kit. Do the same procedure for the other phases.








Test Results

R-Phase

CT Designation Core TerminalInjected Primary

Current in (A)

ExpectedSec.Current in

(A)

MeasuredSec.Current in

(A)% Error

CT1

CORE-11S1-1S2

1S1-1S3

CORE-22S1-2S2

2S1-2S3

CT2 CORE-1 1S1-1S2

Y-Phase


Current in (A)Expected Sec.Current in (A)

Measured Sec.Current in (A)

% Error

CT1

CORE-11S1-1S2

1S1-1S3

CORE-22S1-2S2

2S1-2S3

CT2 CORE-1 1S1-1S2

B-Phase




% Error

CT1

CORE-11S1-1S2

1S1-1S3

CORE-22S1-2S2

2S1-2S3

CT2 CORE-1 1S1-1S2


Check List for Print out1. CT Ratio and Polarity Test(For All Cores and Taps) :2. Knee point test ( for all cores and taps) :3. Winding resistance test (for all core & taps) :

Remarks








6.4. Station Transformer FeedersName Plate Details

Description (CT1) CORE-1 (CT1) CORE-2 (CT2) CORE-1

Make SCHNEIDER

Type RING

Installation INDOOR


Short Time Rating 40kA for 3Sec

Ratio 150/1A 150/1A 3200/1A

Class 5P20/1.0 5P20/1.0 PX

Rated burden(VA) 15VA 15VA -

CT sec. resistance (Rct) at75c in Ω 3Ω 3Ω 18Ω

Knee point voltage (Vk) inV

- - 563

I mag at VK/2 in mA - - 8.8mA

Mfg.Year/Sl.No:

R ph

Y ph

B ph

CT SecTerminals

R ph 1S1-1S2 2S1-2S2 S1-S2

Y ph 1S1-1S2 2S1-2S2 S1-S2

B ph 1S1-1S2 2S1-2S2 S1-S2

Function OC+E/F BCU+ METERING B/B PROT (87B)

6.4.1. General Checks1. General visual inspection :2. Name plate details :3. HV Terminal Marking :4. LV Terminal Marking :5. Check for tightness of all CT terminals :6. Neutral earthing / Single point earthing :7. Position of P1-Towards BUS/FEEDER :8. Check CT Connection with ring type Lugs :9. Check CT wire as per the Schematic diagrams and tightness :








6.4.2. Insulation Resistance Measurement:Minimum Value: 1M/KV Ambt Temperature : ºC


Test Results

DescriptionApplied Voltage

(DC) in VR-PH(GΩ) Y-PH(GΩ) B-PH(GΩ)

















Test ResultsCT


CT1 CORE-1 1S1-1S2

CORE-2 2S1-2S2

CT2 CORE-1 1S1-1S2











Test Results

CTDesignation

Core No Terminal


R-Ph Y-Ph B-Ph


CT1CORE-1 1S1-1S2

CORE-2 2S1-2S2

CT2 CORE-1 1S1-1S2













Test Results

CT Designation Core No TerminalR-Ph Y-Ph B-Ph

Vk(V)

Imag(mA)

Vk(V)

Imag(mA)

Vk(V)

Imag( mA)

CT1CORE-1 1S1-1S2

CORE-2 2S1-2S2

CT2 CORE-1 1S1-1S2









6.4.6. Ratio Test

Test Procedure Do the connection as shown fig. Isolate primary/secondary/neutral earth. Switch on the kit. Select the current transformer page. As per the instruction given by the manual do the activities. After entering primary and the secondary Current and pressing the start button, the test cord displays. The Ratio will be calculated automatically by the kit. Do the same procedure for the other phases.Test Results

R-Phase



Measured Sec.Current in (A) % Error

CT1CORE-1 1S1-1S2

CORE-2 2S1-2S2

CT2 CORE-1 1S1-1S2

Y-Phase



Measured Sec.Current in (A) % Error

CT1CORE-1 1S1-1S2

CORE-2 2S1-2S2

CT2 CORE-1 1S1-1S2








B-Phase




% Error

CT1CORE-1 1S1-1S2

CORE-2 2S1-2S2

CT2 CORE-1 1S1-1S2


Check List for Print out1. CT Ratio and Polarity Test(For All Cores and Taps) :2. Knee point test ( for all cores and taps) :3. Winding resistance test (for all core & taps) :

Remarks :








7. VOLTAGE TRANSFORMER TEST

7.1. Incomer FeederName Plate Details

Description CORE 1

Make SCHNEIDER

Type VBF12

Installation INDOOR


Insulation Level

Ratio11kV/√3 :110V/√3

Class 3P/1.0

Burden(VA) 50 VA

Mfg.Year/Sl.No:

R ph

Y ph

B ph

Function BCU + AVR + MET. + SYNC

7.1.1. General Checks1. General visual inspection :2. Name plate details :3. HV Terminal Marking :4. LV Terminal Marking :5. Check for tightness of all VT terminals :6. VT Primary and Secondary neutral earth check :7. Fuse rating :8. MCB rating :

9. Equipment Grounding System :








7.1.2. Insulation Resistance Measurement:Minimum Value: 1M/kV Ambt Temperature : ºC


Test Results


(DC)in VR-PH(GΩ) Y-PH(GΩ) B-PH(GΩ)





Test Procedure Isolate primary/ secondary / Neutral earth. Connect ‘a’ to +ve and ‘n’ to –ve in the meter. Apply 1.5VDC instantaneously to Primary as shown in fig. Monitor the +ve Deflection in the meter. If the deflection is not enough to confirm, reverse the connection (meter shall be connected to

Primary side and DC voltage shall be applied on secondary side) and try again.Test Results

VT Designation Core No Terminal R-Ph Y-Ph B-Ph

VT CORE-1 1r* - 1nr*








*Denotes respective phase .i.e (1r-1nr), (1y-1ny), (1b-1nb)

7.1.4. VT Winding Resistance

Test Procedure Isolate primary/ secondary / Neutral earth. Switch on the kit Select the voltage transformer page As per instructions given by manual enter the test current and Pressing the start button, the test card

displays The deviation of the measurement over time during the period of charging the winding The Kit will automatically performers a discharging of winding after saving the measurement Measures the DC Voltage Measures the Resistance

Test Results

VTDesignation

Core Terminal


R-PH Y-PH B-PH


HV R* - N*

LV

1r* - 1nr*

2r* - 2nr*

3r* - 3nr*

*Denotes respective phase.i.e (R-N), (Y-N), (B-N), (1r-1nr), (1y-1ny),(1b-1nb) (2r-2nr),(2y-2ny),(2b-2nb) & (3r-3nr),(3y-3ny),(3b-3nb)

Ambt Temperature: C Temperature at 75 C = Rt (1+0.00393(75-t))Where, 75: Resistance at 75°C (Ω)

Rt: Resistance at ambient temperature (Ω)t: Ambient temperature (°C)









7.1.5. Ratio Test

Test Procedure Do the connection as shown fig. Switch on the kit. Select the voltage transformer page. As per the instruction given by the manual do the activities. After entering primary and the secondary voltage and pressing the start button, the test cord displays. The Ratio will be calculated automatically by the kit. Do the same procedure for the other phases.

Test Results

VT Designation Phase TerminalApplied Primary

Voltage in (V)

CalcSec. Voltage in

(V)


(V)% Error

VT

R 1r - 1nr

Y 1y - 1ny

B 1b - 1nb

Criteria: Accordance with VT specification.

Check List for Print out1.VT ratio and polarity test :2. VT secondary winding resistance :

Remarks:








7.2. Capacitor, Station Transformer, Outgoing FeedersName Plate Details

Description Core 1

Make SCHNEIDER

Type VBF12

Installation INDOOR


Insulation Level

Mfg. Year/Sl.No:

R ph

Y ph

B ph

Ratio 11kV/√3 : 110V/√3

Class 3P/1.0

Burden(VA) 50 VA

Function BCU + MET. + SYNC.

7.3. Bus VTDescription Core 1

Make SCHNEITER

Type VBF12

Installation INDOOR


Insulation Level

Mfg.Year/Sl.No:

R ph

Y ph

B ph

Ratio 11kV/√3 : 110V/√3

Class 3P/1.0

Burden(VA) 50 VA

Function BCU + MET. + SYNC.








7.2.1. General Checks1.General visual inspection :2.Name plate details :3.HV Terminal Marking :4.LV Terminal Marking :5.Check for tightness of all VT terminals :6.Fuse rating :7.MCB rating :8.Equipment Grounding System :9.VT Primary and Secondary neutral earth check :10. VT truck rack IN/OUT check :

7.2.2. Insulation Resistance Measurement:Minimum Value: 1M/kV Ambt Temperature : ºC


Test Results


(DC) in V R-PH(GΩ) Y-PH(GΩ) B-PH(GΩ)


Primary- Secondary 5000 V

Secondary -Earth 500 V









Test Procedure Isolate primary/ secondary / Neutral earth. Connect ‘a’ to +ve and ‘n’ to –ve in the meter. Apply 1.5VDC instantaneously to Primary as shown in fig. Monitor the +ve Deflection in the meter. If the deflection is not enough to confirm, reverse the connection (meter shall be connected to

Primary side and DC voltage shall be applied on secondary side) and try again.

Test ResultsVT Designation Core No Terminal R-Ph Y-Ph B-Ph

VT CORE -1 1r* - 1nr*

*Denotes respective phase .i.e (1r-1nr),(1y-1ny),(1b-1nb)








7.2.4. VT Winding Resistance

Test Procedure Isolate primary/ secondary / Neutral earth. Switch on the kit Select the voltage transformer page As per instructions given by manual enter the test current and Pressing the start button, the test card

displays The deviation of the measurement over time during the period of charging the winding The Kit will automatically performers a discharging of winding after saving the measurement Measures the DC Voltage Measures the Resistance

Test Results

VT Designation Core Terminal


R-PH Y-PH B-PH


VT 1 1r* - 1nr*

*Denotes respective phase .i.e (1r-1nr),(1y-1ny),(1b-1nb)

Ambient Temperature: C Temperature at 75 C = Rt (1+0.00393(75-t))Where, 75 : Resistance at 75°C (Ω)










7.2.5. Ratio Test

Test Procedure Do the connection as shown fig. Switch on the kit. Select the voltage transformer page. As per the instruction given by the manual do the activities. After entering primary and the secondary voltage and pressing the start button, the test cord displays. The Ratio will be calculated automatically by the kit. Do the same procedure for the other phases.

Test Results

VTDesignation

Phase TerminalApplied Primary

Voltage in (V)

CalculatedSec. Voltage in

(V)


(V)% Error

R 1r - 1nr

Y 1y - 1ny

B 1b - 1nb

Criteria: Accordance with VT specification.

Check List for Print out1. VT ratio and polarity test :2. VT secondary winding resistance :

Remarks








8. METER CALIBRATION TEST

8.1. Ammeter with Selector Switch8.1.1. Name Plate Details

Device Ref :Make :Sl. No. :Full Scale Reading :CT Ratio :Accuracy Class :

8.1.2. Secondary Injection Test

Injected Secondary Currentin (A)

Measured Current in (A) Expected Current in (A) % Error

Allowable Error Range: As per the Ammeter Class

Ammeter Found Healthy : YES / NO

Selector switch function checked : YES / NO








8.2. Volt Meter with Selector Switch:

8.2.1. Name Plate DetailsDevice Ref :Make :Sl. No. :Full Scale Reading :CT Ratio :Accuracy Class :

8.2.2. Secondary Injection TestInjected Secondary

voltage in VMeasured Voltmeter Reading

in (kV)Expected Voltmeter Reading

in (kV)% Error

Allowable Error Range: As per the Voltmeter Class

Volt meter Found Healthy : YES / NOSelector switch function checked : YES / NO








9.11kV CT SECONDARY INJECTION TEST

9.1. Incomer Feeder9.1.1 Name Plate Details:

Description (CT1) CORE-1 (CT1) CORE-2 (CT2) CORE-1

Make SCHNEIDER

Type RING

Installation INDOOR

Highest system voltage 12 kV

Short time rating 40 kA for 3Sec

Ratio 2500/1A 2500/1A 3200/1A


Rated burden(VA) - 15VA -

CT sec. resistance (Rct) at 75cin Ω <8.75 <14 <18

Knee point voltage (Vk) in V ≥230 - 563

I mag at VK/2 in mA ≤30 - 8.8mA

Mfg. Year/Sl.No

R ph

Y ph

B ph

CT SecTerminals

R ph 1S1-1S2 2S1-2S2 S1-S2

Y ph 1S1-1S2 2S1-2S2 S1-S2

B ph 1S1-1S2 2S1-2S2 S1-S2

FunctionMAIN TRF DIFF(87T) +

REFDirectional O/C Protection

+BCU+AVR+ AmmeterBus Bar Protection








9.1.2. A18 CT1- Core-1, Diff Protection (87T) + REF (87NI).

Ratio : 2500/1A

Inject R- PH – 0.6 A, Y- PH – 0. 8A, B- PH – 1.0A at A, SWGR Terminals X11-612, 615, 618 & 613 andmeasure the Current in the following terminals.

Secondary Current In mA measured at

SWGR Panel A18TB Terminal X11

Relay Panel +B11 RPCT Terminal X650

Relay Panel +B11 .RPTest Block –S871.B Test Position

R Y B N R Y B N R Y B N

612 615 618 613 1 3 5 7 21 23 25 27


Relay Panel +B11 .RPTest Block –S871.B Service Position

Relay Panel +B11 RP Relay 87TMain - 7UT613


22 24 26 28 22 24 26 28 R1 R3 R5 -

Relay Panel +B11 RPDisplay Pri. Current at Relay87T Main-

7UT613

Relay Panel +B11 RPDisplay Sec. Current at Relay87T Main-

7UT613



IL1 IL2 IL3 - IL1 IL2 IL3 - 2 4 6 8



Relay Panel +B11 .RPTB Terminal X650


1 3 5 7 1 3 5 7 10 11 12 13








Relay Panel +A18 .RPTB Terminal X610

Relay Panel +A18 .RP Test Block –S871 Test Position

Relay Panel +A18 .RP Test Block–S871 Test Position


5 6 7 8 21 23 25 27 22 24 26 28

Relay Panel+A18 .RP Test Block –S871 Service Position

Relay Panel+A18 .RP-Relay (87NL/51) P141

Relay Panel +A18 .RP- DisplayPri. Current at Relay (87NL/51) P141


22 24 26 28 Q1/Q2 Q3/Q4 Q5/Q6 Q7/Q8 IL1 IL2 IL3 3I0

Relay Panel+A18 .RP-Display Sec. Current At Relay

(87NL/51) P141

Relay Panel+A18 .RP-B1 Metrosil

Relay Panel+A18 .RP-R102 Resistor

Relay Panel+A18 .RP –

S871Test Position

Relay Panel+A18

.RP –S871Test

Position

R Y B N N N N N N N N N

IL1 IL2 IL3 3I0 1 2 1 2 1 3 2 4

Relay Panel+A18 .RP TestBlock –S871

Service Position

Relay Panel +A18.RP-Relay 87NL P141

Relay Panel +A18 .RP-Display Pri. at

RELAY 87NL P141

Relay Panel+18A .RP- DisplaySec. at Relay 87NL P141

N N N3I0 3I0

2 4 Q7/Q8








9.1.3. A18 CT1- CORE-2, AVR+DIR OC+BCU+AMMETERRatio : 2500/1A

Inject R- PH – 0.6 A, Y- PH – 0.8A, B- PH – 1.0A at A SWGR Terminals X11 – 622, 625, 628 & 623and measure the current in the following terminals.

Secondary current in mA measured at

SWGR Panel +A18 TB Terminal -X11Relay Panel+A18 .RP TB Terminal–

X620

Relay Panel+A18.RP TB

Terminal–X620

AVR Panel TBTerminal –X620

R Y B N R Y B N B B B B

622 625 628 623 1 3 5 7 10 13 1 4

AVR Panel -A1TAPCON 260

Relay Terminal-M1


Relay Display Pri


Relay Display Sec-

Relay Panel+A18 .RP –Test Block –S671.A Test Position

B B B B B B - - R Y B N

5 9 I I - - 21 23 25 27

- -


Relay Panel+A18 .RP –Test Block –S671.A Service Position

Relay panel +A18 .RP –Relay (67/67N/51/50BF) P141


22 24 26 28 22 24 26 28 Q1/Q2 Q3/Q4 Q5/Q6 Q7/Q8

Relay panel +A18 .RP –Relay Display Pri at (67/67N/51/50BF)

P141

Relay panel +A18 .RP –Relay Display Sec at (67/67N/51/50BF)

P141



IL1 IL2 IL3 IE IL1 IL2 IL3 IE 2 4 6 8



Relay Panel+A18 .RPTest Block –S201 Test Position


1 3 5 7 1 3 5 7 21 23 25 27








Relay Panel+A18 .RPTest Block –S201 Test Position

Relay Panel+A18 .RPTest Block –S201 Service Position

Relay Panel+A18 .RP A201BCU 7SJ647


22 24 26 28 22 24 26 28 Q1/Q2 Q3/Q4 Q5/Q6 Q7/Q8

Relay Panel+A18 .RP - Display Pri. atBCU 7SJ647

Relay Panel+A18 .RP - Display Sec. atBCU 7SJ647

Relay Panel +A18 .RP TBTerminal –X620

IL1 IL2 IL3 IE IL1 IL2 IL3 IER Y B N

10 11 12 13

SWGR Panel+A18TB Terminal- X11

SWGR Panel+A18Selector Switch (-S401)

SWGR Panel +A18Ammeter (-P401)

R Y B N R Y B N R-ph Y-ph B-ph -

661 663 665 667 2 6 10 1-

9.1.4. A CT2- CORE-1, BB PROTN.Ratio: 3200/1A

Inject R- PH – 0.6 A, Y- PH – 0.8A, B- PH – 1.0A at A SWGR Terminals X11 – 634, 637, 640 &633 and measure the current in the following terminals.


SWGR Panel A18TB Terminal – X11

Bb Relay Panel +BB .RP1TB Terminal-X610

BB Relay Panel +BB .RP1R103,R104,R105(Resistor)


634 637 640 633 52 53 54 2 1,2 1,2 1,2 --

--

BB Relay Panel +BB .RP1 –Test Block –S87Z1 Test Position

BB Relay Panel +BB .RP1 –Test Block –S87Z1 Test Position

BB Relay Panel +BB .RP1 –Test Block –S87Z1 Service Position


21 23 25 27 22 24 26 28 22 24 26 28

BB Relay Panel +BB .RP-Relay F87Z1 BBP 7SJ611

BB Relay Panel +BB .RP-Relay Display Pri.F87Z1 BBP 7SJ611

BB Relay Panel +BB .RP-RelayDisplay Sec.F87Z1 BBP 7SJ611


Q7/Q8 Q7/Q8 Q7/Q8 -- 3I0 3I0 3I0 - 3I0 3I0 3I0 -

--








9.1.5. Burden Measurement Test

Inject 1A at each core and each phase. Measure the voltage at terminal.LOCATION CORE NO PHASE TERMINAL VOLTAGE BURDEN

11KV SWGR

CT1-Core 1

R X11– 612 & 613

Y X11– 615 & 616

B X11– 618 & 619

CT1-Core 2

R X11 –622 & 623

Y X11– 625 & 626

B X11– 628 & 629

CT2-Core 1

R X11 – 633 & 634

Y X11 – 636 & 637

B X11 – 639 & 640

CT Star Point Conformation:

Note:

1. Confirmation of connection of CT as per drawing :2. Confirmation of isolating links and shorting links as per drawing :3. Confirmation of earthing of star at single point :4. CT Terminal tightness :5. CORE identification checks :

Remarks:

Description CT Core (CT1) Core-1 (CT1) Core-2 (CT2) Core-1

Star Point

Conformation

S1/S2








9.2. Bus Section

9.2.1. Name Plate Details:

Description CT1 - Core 1 CT2 - Core 1 CT2 - Core 2

Ratio 3200/1A 3200/1A 3200/1A


Rated Output(VA) - 15 VA -

CT Sec. Resistance (Rct)@75C

≤18Ω ≤18Ω ≤18Ω

Knee Point Voltage (Vk) ≥563V - ≥563V

I mag At VK/2 ≤8.8mA - ≤8.8mA

Purpose B/B PRTN(87B/50BF)O/C + E/F-

50/51N+BCU+METERINGB/B PRTN(87B/50BF)

9.2.2. A CT1, CORE-1 (87B/50BF)Ratio: 3200/1A

Inject R-PH– 0.6A, Y-PH- 0.8A, B-PH-1.0A at A SWGR Terminals X11: 605, 609, 613&603 andmeasure the current in the following terminals.


SWGR Panel +A18TB Terminal-X11

BB Relay Panel +BB .RP1TB Terminal– X610

BB Relay Panel +BB .RP1 –B103,B104,B105-(Metrosil)


605 609 613 603 2 4 6 5 1,2 1,2 1,2 --

--

BB Relay Panel +BB .RP1 –R103,R104,R105- Resistor

BB Relay Panel +BB .RP1 Test Block –S871Z1 Test Position



1,2 1,2 1,2 -- 21 23 25 27 22 24 26 28

--

BB Relay Panel +BB .RP1 Test Block–S871Z1 Service Position

BB Relay Panel +BB .RP1-Relay 87BB1 BBP 7SJ611

BB Relay Panel +BB .RP1-Relay Display Pri-87BB1 BBP 7SJ611

R Y B N R Y B N3I0 3I0 3I0 --

22 24 26 28 Q7/Q8 Q7/Q8 Q7/Q8 --

-- --








BB Relay Panel +BB .RP1-Relay Display Sec-87BB1 BBP 7SJ611

---------- -------

3I0 3I0 3I0 -- --- --- --- --- --- --- --- ---

--- --- --- --- --- --- --- ---

9.2.3. A CT2, CORE-1 O/C + E/F +BCU+METERING Ratio: 3200/1AInject R-PH– 0.6A, Y-PH- 0.8A, B-PH-1.0A at A SWGR Terminals X11: 612, 615, 618&613 andmeasure the current in the following terminals.


Relay Panel +ATB Terminal X11

Relay Panel +A .RPTB Terminal –X610

Relay Panel +A .RPTest Block –S511 Test Position


612 615 618 613 1 3 5 7 21 23 25 27


Relay Panel +A .RPTest Block –S511 Service Position

Relay Panel +A .RP Relay (51/50BF)7SJ621


22 24 26 28 22 24 26 28 Q1/Q2 Q3/Q4 Q5/Q6 Q7/Q8

Relay Panel +A .RP Relay DisplayPri- (51/50BF) 7SJ621

Relay Panel +A .RP Relay DisplaySec - (51/50BF) 7SJ621








1 3 5 7 1 3 5 7 21 23 25 27



Relay Panel +A .RP -A201 BCU(7SJ647)


22 24 26 28 22 24 26 28 Q1/Q2 Q3/Q4 Q5/Q6 Q7/Q8

Relay Panel +A .RP Relay DisplayPri -A201 BCU (7SJ647)

Relay Panel +A .RP Relay DisplaySec -A201 BCU (7SJ647)

Relay Panel +A .RPTB Terminal -X610



SWGR Panel BUS CT2TB Terminal -X11

SWGR Panel +ATB Terminal -X11

SWGR Panel +ASelector Switch (S401)









651 652 653 654 621 623 625 627 2 6 10 1

+A Ammeter Display R - Ph ,Y - Ph ,B – Ph (P401)

- -

R Y B N - - - - -

- - - - - -

- - - - - -

9.2.4. A CT2, CORE-2 87BB2 PROTNRatio: 3200/1A

Inject R-PH– 0.6A, Y-PH- 0.8A, B-PH-1.0A at +A SWGR Terminals X11:612,615,618 & 613 andmeasure the current in the following terminals.


SWGR Panel +ATB Terminal X11

BB Relay Panel +BB .RP1TB Terminal– X610

BB Relay Panel +BB .RP1 –B103,B104,B105 -(Metrosil)


612 615 618 613 1 17 33 49 1,2 1,2 1,2 --

--

BB Relay Panel +BB .RP1 –R103,R104,R105- (Resistor)




1,2 1,2 1,2 -- 21 23 25 27 22 24 26 28

--

BB Relay Panel +BB .RP1 Test Block–S87Z1 Service Position

BB Relay Panel +BB .RP1-Relay 87BB2 BBP 7SJ611

BB Relay Panel +BB .RP1-Relay Display Pri-87BB2 BBP 7SJ611

R Y B N R Y B N3I0 3I0 3I0 --

22 24 26 28 Q7/Q8 Q7/Q8 Q7/Q8 --

---

BB Relay Panel +BB .RP1-Relay Display Sec-87BB2 BBP

7SJ611----- -----

3I0 3I0 3I0 -- --- --- --- --- --- --- --- ---

--- --- --- --- --- --- --- ---








9.2.5. Burden Measurement Test:

Inject 1A at each core and each phase, Measure the voltage at terminal.Location Core No Phase Terminal Voltage Burden

11KV SWGR

CT1-Core 1

R X11 – 612 & 613

Y X11 – 615 & 616

B X11 – 618 & 619

CT2-Core 1

R X11 – 612 & 613

Y X11 – 615 & 616

B X11 – 618 & 619

CT2-Core 2

R X11 – 622 & 623

Y X11 – 625 & 626

B X11 – 628 & 629


DescriptionCT Core S1/S2

Star Point

Conformation

CT1-Core-1

CT2-Core-1

CT2-Core-2

Note:1. Confirmation of connection of CT as per drawing :2. Confirmation of isolating links and shorting links as per drawing :3. Confirmation of earthing of star at single point :4. CT terminal tightness :5. CORE identification checks :

Remarks:








9.3. Bay Ref: A Cable Feeder9.3.1. Name Plate Details:

9.3.2. A CT1-CORE-1, OC/EF+BCU+METRatio: 400 - 300/1A

Inject R- PH – 0.6 A, Y- PH – 0.8A, B- PH – 1.0 A at A SWGR Terminals X11 – 602, 606, 610 & 604and measure the current in the following terminals.


SWGR PanelTB Terminals - X11

Relay Panel +A .RP- TB TerminalX610.A

Relay Panel +A .RP –S502.A Test Position


602 606 610 604 1 3 5 7 21 23 25 27


Relay Panel +A .RP –S502.A Service Position

Relay Panel +A .RP- Relay(50/50N/51/51N) 7SJ802


22 24 26 28 22 24 26 28 F1/F2 F3/F4 F5/F6 F7/F8

Description (CT1) CORE 1 (CT1) CORE 2 (CT2) CORE 1

Ratio 400 - 300/1A 400 - 300/1A 3200/1A


Rated Output(VA) 15-11.5 VA - -

CT Sec. Resistance (Rct) @75C <2 – 1.5Ω <1.4 – 1.05Ω <18Ω

Knee Point Voltage (Vk) - ≥425-320V ≥563V

I mag at VK/2 - ≤ 50-70mA ≤8.8mA

PurposeOC/EF+BCU+MET

50/50N/51/51N/49C

PILOT WIRE 87PA(7SG11+7PG211)

BBP 87BB1(7SJ611)








Relay Panel +A .RP- Display Pri.Relay (50/50N/51/51N) 7SJ802

Relay Panel +A .RP- Display Sec.Relay (50/50N/51/51N) 7SJ802




Relay Panel +A .RP – Test BlockS502.A Test Position

Relay Panel +A .RP – Test BlockS502.A Service Position

Relay Panel +A .RP –Test Block –S201.A Test Position


1 3 5 7 1 3 5 7 21 23 25 27


Relay Panel +A .RP –Test Block –S201.A Service Position

Relay Panel +A .RP – A201.A BCU7SJ632


22 24 26 28 22 24 26 28 Q1/Q2 Q3/Q4 Q5/Q6 Q7/Q8

Relay Panel +A .RP Display Pri –A201.A BCU 7SJ632

Relay Panel +A .RP Display Sec –A201.A BCU 7SJ632

Relay Panel +A .RP –TB TerminalX610A



SWGR Panel +A .SWGR –TB Terminal –X11

SWGR Panel +A .SWGR –S401Ammeter selector switch (AS)

SWGR Panel +A SWGR- AmmeterDisplay


651 652 653 654 2 6 10 1 - - - -

9.3.3. A CT1- CORE-2, Pilot Wire Diff PRTNRatio : 400 - 300/1A




Relay Panel +A .RP- TBTerminal X620.A

Relay Panel +A .RP –TEST Block –S501.A Test Position


622 626 630 624 1 3 5 7 21 23 25 27



Relay Panel +A .RP- Relay –F501.A(50GR) 7SG111









22 24 26 28 22 24 26 28 27/28 25/26 23/24 21/22

Relay Panel +A .RP- Relay DisplayPri. F501.A (50GR) 7SG111

Relay Panel +A .RP- Relay DisplaySec. F501.A (50GR) 7SG111


R Y B N R Y B N

1AIA 1AIB 1AIC 5AIA 1AIA 1AIB 1AIC 5AIA 1 3 5 7



Relay Panel +A .RP- TB Terminal -X620.A


2 4 6 8 2 4 6 8 10 12 14 16

Relay Panel +A .RP –Relay 87P (7PG211)

--

R Y B N - - - - - - - -

23 25 27 24 - - - - - - - -

- - - - - - - -

9.3.4. A CT2-CORE-1, BUSBAR PRTNRatio: 3200/1A

Inject R- PH – 0.6 A, Y- PH – 0.8A, B- PH – 1.0A at A SWGR Terminals X11 – 644, 647,650 &643and measure the current in the following terminals.



Relay Panel +BB .RP1 –TB Terminal –X610

Relay Panel +BB .RP1 –R103,R104,R105(Resistor)


644 647 650 643 3 23 39 69 R(1,2) Y(1,2) B(1,2) --

--

Relay Panel +BB .RP1 –Test Block –S87Z1 Test Position


Relay Panel +BB .RP1 –Test Block –S87Z1 Service Position


21 23 25 27 22 24 26 28 22 24 26 28

Relay Panel +A .RP - Relay -F87Z1BBP 7SJ611

Relay Panel +A .RP - Relay DisplayPri -F87Z1 BBP 7SJ611

Relay Panel +A .RP - Relay DisplaySec -F87Z1 BBP 7SJ611


Q7/Q8 Q7/Q8 Q7/Q8 -- 3I0 3I0 3I0 - 3I0 3I0 3I0 -

--








9.3.5. Burden Measurement TestInject 1A at each core and each phase. Measure the voltage at terminal.

Location Core No Phase Terminal Voltage Burden

11KV SWGR

CT1-Core 1

R X11 – 602 & 604

Y X11 – 606 & 608

B X11 – 610 & 612

CT1-Core 2

R X11 – 624 & 622

Y X11– 626 & 628

B X11 – 630 & 632

CT2-Core 1

R X11 – 644 & 643

Y X11 – 646 & 647

B X11 – 650 & 649



Remarks:


Star Point Conformation S1/S2








9.4. Bay Ref : A Auxiliary Transformer Feeder


Description (CT1) Core 1 (CT1) Core 2 (CT2) Core 1

Ratio 150/1A 150/1A 3200/1A

Class 5P20/1.0 5P20/1.0 PX

Rated Output(Va) 15 VA 15 VA -

CT Sec. Resistance (R ct)@75C

<3.0Ω <3.0Ω <18Ω

Knee Point Voltage (Vk) - - ≥563V

I mag At VK/2 - - ≤ 8.8mA

Purpose OC/EF PROTNBCU+

AMMETERBUSBAR PROTN.








9.4.2. A CT1- CORE-1, OC/EF PROTNRatio : 150/1A

Inject R- PH – 0.6 A, Y- PH – 0.8A, B- PH – 1.0A at A SWGR Terminals X11– 602, 605, 608 & 603and measure the current in the following terminals.


SWGR Panel +A10TB terminal –X11

Relay Panel +A10 .RP- TBterminal X610

Relay Panel +A10 .RP–Test Block –S511 Test Position


602 605 608 603 1 3 5 7 21 23 25 27

Relay Panel +A10 .RP–Test Block –S511 Test Position

Relay Panel +A10 .RP–Test Block –S511 Service Position

Relay Panel +A10 .RP- Relay50/50N/51/51N (7SJ611)


22 24 26 28 22 24 26 28 Q1/Q2 Q3/Q4 Q5/Q6 Q7/Q8

Relay Panel +A10 .RP- Relay DisplayPri-50/50N/51/51N (7SJ611)

Relay Panel +A10 .RP- Relay DisplaySec -50/50N/51/51N (7SJ611)

----

R Y B N R Y B N --- --- --- ---

IL1 IL2 IL3 IE IL1 IL2 IL3 IE --- --- --- ---

--- --- --- ---








9.4.3. A CT1- CORE-2, BCU+METERINGRatio : 150/1A,



SWGR Panel +ATB terminal –X11

Relay Panel +A .RP-TB terminal X620

Relay Panel +A .RP-Test Block –S201 Test Position


622 625 628 623 1 3 5 7 21 23 25 27


Relay Panel +A .RP-Test Block –S201 Service Position

Relay Panel +A .RP - A201BCU 7SJ647


22 24 26 28 22 24 26 28 Q1/Q2 Q3/Q4 Q5/Q6 Q7/Q8

Relay Panel +A .RP - A201RelayDisplay Pri-BCU 7SJ647

Relay Panel +A .RP - A201RelayDisplay Sec-BCU 7SJ647





Relay Panel +A .RP-Test Block –S201 Service Position

Relay Panel +A .RP-TB terminal -X620


1 3 5 7 1 3 5 7 10 11 12 13

SWGR Panel +ATB terminal –X11

SWGR Panel +A Ammeter SelectorSwitch (S401)

SWGR Panel +A Ammeter Display


661 663 665 667 2 6 10 1








9.4.4. A CT2-CORE-1, BUSBAR PROTN.Ratio: 3200/1A



SWGR Panel ATB Terminal –X11

Relay Panel +A .RP-TB Terminal –X610

Relay Panel +A .RP-B103,B104,B105 -Metrosil


644 647 650 643 3 19 35 55 R(1,2) Y(1,2) B(1,2) --

+ Relay Panel+A .RP-R103,R104,R105 (Resistor)

Relay Panel+A .RP-Test Block –S87Z1 Test Position

Relay Panel +A .RP-Test Block –S87Z1 Test Position


R(1,2) Y(1,2) B(1,2) -- 21 23 25 27 22 24 26 28

Relay Panel +A .RP-Test Block –S87Z1 Test Position

Relay Panel+A .RP-Relay 87BB1 BBP 7SJ611

Relay Panel +A .RP-Relay Display Pri-87BB1 BBP 7SJ611


22 24 26 28 Q7/Q8 Q7/Q8 Q7/Q8 -- 3I0 3I0 3I0 --

Relay Panel +A .RP-Relay Display Sec-87BB1 BBP 7SJ611

-------------

3I0 3I0 3I0 -- -- -- -- -- -- -- -- --

-- -- -- -- -- -- -- -- --








9.4.5. Burden Measurement Test :Inject 1A at each core and each phase. Measure the voltage at terminal

Location Core No Phase Terminal Voltage Burden

11KV SWGR

(CT1) Core 1

R X11 – 602 & 603

Y X11 – 603 & 606

B X11 – 608 & 609

(CT1) Core 2

R X11 – 622 & 623

Y X11 – 625 & 626

B X11 – 628 & 629

(CT2) Core 1

R X11 – 644 & 643

Y X11 – 647 & 646

B X11 – 650 & 649



Remarks:










10. VT SECONDARY INJECTION TEST

10.1. Bay Ref : A Incomer Feeder10.1.1. Name Plate Details:

Core No. VT-WDG-1

Class 3P/1.0

Ratio (Volt) 11kV/√3 :110V/√3

Burden(VA) 50

Purpose67PROTN+SYNC. +BCU+VOLT METER

10.1.2. Core-1 VT secondary injection:

VT core and function : CORE1, 67PTN+BCU+SYNC +VOLT METERRatio : 11kV/√3 / 110V/√3

Injected voltage: R-N: 60 Y-N: 50 B-N: 40 at X11- 671,672, 673 & 674 Terminals measure the voltagewith respect to Earth in the following terminals

Voltage in volts measured at

SWGR Panel +A TB Terminal –X11SWGR Panel +A MCB (F404)

OFF PositionSWGR Panel +A MCB (F404)

OFF Position


671 672 673 674 1 3 5 7 2 4 6 8

SWGR Panel +A MCB (F404)ON Position

SWGR Panel +A TB Terminal –X1+ SWGR Panel +A

Selector Switch (S404)


2 4 6 8 511 512 513 514 10 6 2 12

SWGR Panel +AVolt Meter Display

SWGR Panel +A TB Terminal –X1SWGR Panel +A -K101,K102,

K103- U/V Relay

R-Y Y-B B-R -- R Y B N R Y B --

--511.A 512.A 513.A 514.A 2,10 2,10 2,10 --

--








SWGR Panel +A -K101.1,K102.1,K103.1- U/V Relay

SWGR Panel +A TB Terminal –X4SWGR Panel +A

Fuse Failure Relay (F304)

R Y B -- R Y B N R Y B -

2,10 2,10 2,10 -- 511.B 512.B 513.B 514.B L1 L2 L3 -

-- -

SWGR Panel +A TB Terminal –X4 SWGR Panel +A Sync Switch S25 - ONSWGR Panel +A Sync Switch

S25 - ON

R Y B N R Y - - R Y - -

511.A 512.A 513.A 514.A 1 3 - - 2 4 - -

- - - -

SWGR Panel +A18 TB Terminal –X4 SWGR Panel +A10 TB Terminal –X4 SWGR Panel +A12 TB Terminal –X4

R Y - - R Y - - R Y - -

661 663 - - 661 663 - - 661 663 - -

- - - - - -

Relay Panel+A12 .RPTB Terminal –X710

Relay Panel +A12 .RP Test Block –S251Test Position


R Y - - R Y - - R Y - -

14 15 - - 9 11 - - 10 12 - -

- - - - - -

Relay Panel+A12 .RP-A251 (7SJ640)

Relay Panel+A12 .RP Relay Display Pri-A251 (7SJ640)

Relay Panel+A12 .RP Relay DisplaySec-A251 (7SJ640)

R Y - - RY - - RY - - -

R13 R14 - - V4 - - V4 - - -

- - - - - - -

SWGR Panel +A18 TB Terminal –X4Relay Panel+A18 .RP

TB Terminal –X710

Relay Panel +A18.RP VT Terminal -

X710

RTCC1Panel.AVR. TB- X710

R Y B N R Y B N R Y R Y

511 512 513 514 1 3 5 7 14 15 1 (R) 2(Y)








RTCC1 Panel.AVR Volt Meter

Terminal

RTCC1 Panel .AVRVolt Meter Display

RTCC1 Panel .AVR-U/V Relay (K501)

RTCC1 Panel.AVR Fail Relay

(K97)

RTCC1 Panel.AVR.

Raise/LowerRELAY(K502)

RTCC1 Panel.AVR Relay-A1TAPCON260

R Y R-Y R Y R Y R Y R Y R Y MI MI

1(R) 2(Y) R ph-Y ph A1(R) A2(Y) 21 22 31 32 13 14 43 44 1 2

RTCC1 Panel.AVR Relay-A1TAPCON260

-Relay Panel +A18 .RP

TB Terminal - X710

Relay Panel +A .RPTest Block-S671.B Test Position

R-Y - - R Y B N R Y B N

U - - 10 11 12 13 1 3 5 7

- -

Relay Panel +A .RPTest Block-S671.B Test Position

Relay Panel +A .RPTest Block-S671.B Service Position

Relay Panel +A .RP Relay –F671(67/67N/51/50BF) 7SJ621


2 4 6 8 E13 E33 E53 E73 R14 R15 R17 R16

Relay Panel +A .RP Relay Display Pri–F671 (67/67N/51/50BF) 7SJ621

Relay Panel +A .RP Relay Display Sec–F671 (67/67N/51/50BF) 7SJ621

Relay Panel +A .RPTest Block-S201 Test Position

R Y B - R Y B - R Y B N

V1 V2 V3 - V1 V2 V3 - 1 3 5 7



Relay Panel +A .RPRelay –A201 BCU (7SJ647)


2 4 6 8 2 4 6 8 R15 R17 R18 R16

Relay Panel +A .RPRelay Display Pri –A201 BCU (7SJ647)

Relay Panel +A .RPRelay Display Sec –A201 BCU (7SJ647) -

R Y B N R Y B N - - - -

VL1 VL2 VL3 - VL1 VL2 VL3 - - - - -

- - - - - -








10.1.3. Burden Measurement:Core-1

Phase Voltage applied in Volts Current measured in mA Calculated Burden in VA

R 63.5

Y 63.5

B 63.5

Note:1. Confirmation of isolating links and shorting links as per drawing :2. Confirmation of Earthing of STAR at single point :3. Terminal tightness checked :

Remarks:








10.2. Bay Ref : A12 Bus Section :Name Plate Details:

10.2.1. A166 VT secondary injection:Core and Function: A166 - BCU + Voltmeter + LOAD SHEDDING

Ratio: 11kV/√3:110V/√3Injected voltage: R-N: 60V Y-N: 50V B-N: 40V at X4:651, 652, 653 & 654 Terminals measure thevoltage with respect to Earth in the following terminals.


SWGR Panel +A16 TB Terminal –X4SWGR Panel +A16 VT MCB (F404)

OFF PositionSWGR Panel +A16 VT MCB (F404)

OFF Position


651 652 653 654 1 3 5 7 2 4 6 8

SWGR Panel +A16 VT MCB (F404)ON Position

SWGR Panel +A16 TB Terminal –X1 SWGR Panel +A16 TB Terminal –X1


2 4 6 8 511 512 513 514 511.A 512.A 513.A 514.A

SWGR Panel +A16 Fuse FailureRelay(F304)

SWGR Panel +A16 U/V Relay–K101,K102,K103

SWGR Panel +A16 TB Terminal –X1

R Y B N R Y B - R Y B N

L1 L2 L3 - 2,10 2,10 2,10 - 511.B 512.B 513.B 514.B

-

SWGR Panel +A16 Selector Switch(S404)

SWGR Panel +A16 Ammeter Display(P404)


R Y B N RY YB BR - R Y B N

10 6 2 12 - 511.A 512.A 513.A 514.A

-

Core No. A166 VT-WDG A266 VT-WDG

Class 3P/1.0 3P/1.0

Ratio (Volt) 11kV/√3 :110V/√3 11kV/√3 :110V/√3

Burden(VA) 5050

Purpose BCU + VOLTMETER + LOADSHEDDING

BCU + VOLTMETER + LOADSHEDDING








SWGR Panel +A12 TB Terminal –X4 SWGR Panel +A10 TB Terminal –X4SWGR Panel +A10 Sync Selector

Switch -25 OFF


668 670 672 674 669 671 673 675 5 7 9 11

SWGR Panel +A10 Sync Selector Switch-25 OFF

SWGR Panel +A10 Sync SelectorSwitch -25 ON



6 8 10 12 6 8 10 12 653 655 657 659

SWGR Panel +A12 TB Terminal –X4Relay Panel +A12 .RP TB Terminal

–X710Relay Panel +A12 .RP Test Block –

S251 Test Position


653 655 657 659 10 11 12 13 1 3 5 7


Relay Panel +A12 .RP Test Block–S251 Service Position

Relay Panel +A12 .RP Relay –A251(7SJ640)


2 4 6 8 2 4 6 8 R15 R17 R18 R16

Relay Panel +A12 .RP Relay Display–A251 (7SJ640)

SWGR Panel +A210 TB Terminal –X4 SWGR Panel +A210 Sync SelectorSwitch -25 OFF


VL1 VL2 VL3 - 669 671 673 675 5 7 9 11

SWGR Panel +A210 Sync SelectorSwitch -25 OFF

SWGR Panel +A210 Sync SelectorSwitch -25 ON



6 8 10 12 6 8 10 12 676 678 680 684

Relay Panel +A12 .RP TB Terminal–X720




10 11 12 - 1 5 3 - 2 6 4 -

Relay Panel +A12 .RP Test Block –S252Service Position




2 6 4 - E9 E12 E11 - VL1 VL2 VL3 -

SWGR Panel +A16 TB Terminal –X4 Relay Panel +A12 TB Terminal –X710 Relay Panel +A12 TB Terminal –X231









511 512 513 514 1 3 5 7 2 5 8 11

Relay Panel +A10 TB Terminal –X231.ARelay Panel +A10 .RP Test Block –

S201 Test PositionRelay Panel +A10 .RP Test Block –

S201 Test Position

R Y - - R Y - - R Y - -

1 3 - - 11 13 - - 12 14 - -

- - - - - -




R Y - - R Y - - R-Y - -

12 14 - - R13 R14 - - V4 - -

- - - - - -



S201 Test Position

R Y - - R Y - - R Y - -

1 13 - - 9 11 - - 10 12 - -

- - - - - -




R Y - - R Y - - R-Y - -

10 12 - - R13 R14 - - V4 - -

- - - - - -

Relay Panel +LSP TB Terminal –X231Relay Panel +LSP Selector Switch

–S66 OFFRelay Panel +LSP Selector Switch

–S66 OFF


9 10 11 12 1 3 5 7 2 4 6 8

Relay Panel +LSP Selector Switch–S66 ON

Relay Panel +LSP .RP Test Block–S811 Test Position



2 4 6 8 1 3 5 7 1 3 5 7


Relay Panel +LSP .RP Relay –F811(7SJ621)

Relay Panel +LSP .RP Relay Display–F811 (7SJ621)

R Y B N R Y B N R Y B -

2 4 6 8 R14 R15 R17 R16 V1 V2 V3 -

-












3 5 7 9 4 6 8 10 4 6 8 10

-


Relay Panel +A12 .RP Relay DisplayPri –A201 (7SJ647)

Relay Panel +A12 .RP Relay DisplaySec –A201 (7SJ647)

R Y B N R Y B - R Y B -

R15 R17 R18 R16 VL1 VL2 VL3 - VL1 VL2 VL3 -

-




R Y B - R Y B - R Y B -

1 3 5 - 2 4 6 - 2 4 6 -

-

Relay Panel +A12 .RP Relay–A253 (7SJ804)


R Y B - R Y B - -

E9 E12 E11 - VL1 VL2 VL3 - -

-

10.2.2. A266 VT secondary injection :VT core and function : BCU + Voltmeter + LOAD SHEDDING Ratio: 11kV/√3 / 110V/√3

Injected voltage : R-N: 60V Y-N: 50V B-N: 40V at A X4: 651, 652, 653 & 654Terminals measure the voltage with respect to Earth in the following terminals.




OFF Position


651 652 653 654 1 3 5 7 2 4 6 8




2 4 6 8 511 512 513 514 511.A 512.A 513.A 514.A





L1 L2 L3 - 2,10 2,10 2,10 - 511.B 512.B 513.B 514.B








-

SWGR Panel +A26 Selector Switch(-S404)



R Y B N RY YB BR - R Y B N

10 6 2 12 - 511.A 512.A 513.A 514.A

-

SWGR Panel +A12 TB Terminal –X4 SWGR Panel +A20 TB Terminal –X4 SWGR Panel +A32 TB Terminal –X4

R Y - - R Y B N R Y B N

672 673 - - 668 670 672 674 668 669 670 671

- -

SWGR Panel +A32 Sync Selector Switch–S25 OFF

SWGR Panel +A32 Sync SelectorSwitch –S25 OFF

SWGR Panel +A32 Sync SelectorSwitch –S25 ON


1 3 5 7 2 4 6 8 2 4 6 8

SWGR Panel +A26 TB Terminal –X4Relay Panel +A12 .RP TB Terminal

–X720Relay Panel +A12 .RP TB Terminal

–X231


511 512 513 514 1 3 5 7 13 15 17 19

Relay Panel +LSP .RP TB Terminal–X231

Relay Panel +LSP .RP Selector Switch–S66 OFF



1 3 5 7 9 11 13 15 10 12 14 16

Relay Panel +LSP .RP Selector Switch –S66 ON




10 12 14 16 1 3 5 7 2 4 6 8

Relay Panel +LSP .RP Test Block–S811 Service Position



R Y B N R Y B N R Y B -

2 4 6 8 R14 R15 R17 R16 V1 V2 V3 -



S201 Test Position

R Y - - R Y - - R Y - -

1 3 - - 11 13 - - 12 14 - -

- - - - - -











R Y - - R Y - - R-Y - -

12 14 - - R13 R14 - - V4 - -

- - - - - -



S201 Test Position

R Y - - R Y - - R Y - -

1 13 - - 9 11 - - 10 12 - -

- - - - - -




R Y - - R Y - - R-Y - -

10 12 - - R13 R14 - - V4 - -

- - - - - -

Relay Panel +A12 TB Terminal –X231Relay Panel +A12 .RP Test Block –

S201 Test Position


R Y - - R Y - - R Y - -

14 16 - - 11 13 - - 12 14 - -

- - - - - -



Relay Panel +A12 .RP TB Terminal-X231

R Y - - R-Y - - R Y B N

R13 R14 - - V4 - - 13 15 17 19

- - - -





9 11 13 15 10 12 14 16 10 12 14 16

Relay Panel +A12 .RP Relay –A511(51/50BF) 7SJ621

Relay Panel +A12 .RP Relay Display–A511(51/50BF) 7SJ621

-

R Y B N R Y B N - - - -

R14 R15 R17 R18 V1 V2 V3 - - - - -

10.2.3. Burden Measurement:

A166 VT:








A266 VT


Remarks:

11.0 Bay Ref : A32 Bus Section :Name Plate Details:


R 63.5Y 63.5B 63.5


R 63.5Y 63.5B 63.5

Core No. A566 VT-WDG

Class 3P/1.0

Ratio (Volt) 11kV/√3 :110V/√3

Burden(VA) 50

Purpose BCU + VOLTMETER + LOAD SHEDDING








11.1A566 VT secondary injection :VT core and function : BCU + Voltmeter + LOAD SHEDDING Ratio: 11kV/√3 / 110V/√3

Injected voltage : R-N: 60V Y-N: 50V B-N: 40V at A X4:651, 652, 653 & 654Terminals measure the voltage with respect to Earth in the following terminals.




OFF Position


651 652 653 654 1 3 5 7 2 4 6 8




2 4 6 8 511 512 513 514 511.A 512.A 513.A 514.A





L1 L2 L3 - 2,10 2,10 2,10 - 511.B 512.B 513.B 514.B

-

SWGR Panel +A56 Selector Switch(-S404)



R Y B N RY YB BR - R Y - -

10 6 2 12 - 511 512 - -

- - -

SWGR Panel +A32 TB Terminal –X4SWGR Panel +A470 TB Terminal

–X4


R Y - - R Y B N R Y B N

672 673 - - 668 670 672 674 5 7 9 11

- -


SWGR Panel +A470 Sync SelectorSwitch –S25 ON

SWGR Panel +A12 TB Terminal–X4


6 8 10 12 6 8 10 12 676 678 680 684












10 11 12 - 1 5 3 - 2 6 4 -





2 6 4 - E9 E12 E11 - VL1 VL2 VL3 -


Relay Panel +LSP .RP TB Terminal–X231



2 5 8 11 17 18 19 20 21 23 25 27


Relay Panel +LSP .RP Selector Switch–S66 ON



22 24 26 28 22 24 26 28 1 3 5 7


Relay Panel +LSP .RP Test Block–S811 Service Position



2 4 6 8 2 4 6 8 R14 R15 R17 R16


Relay Panel +A38 TB Terminal –X720Relay Panel +A38 TB Terminal –

X231.A

R Y B - R Y B N R Y - -

V1 V2 V3 - 3 6 9 12 1 13 - -

- -



Relay Panel +A38 .RP Test Block –S201 Service Position

R Y - - R Y - - R Y - -

9 11 - - 10 12 - - 10 12 - -

- - - - - -



Relay Panel +A32 TB Terminal –X231

R Y - - R-Y - - R Y B N

R13 R14 - - V4 - - 1 3 5 7

- - - -












3 5 7 9 4 6 8 10 4 6 8 10

-





R15 R17 R18 R16 VL1 VL2 VL3 - 1 3 5 -

- -





2 4 6 - 2 4 6 - E9 E10 E12 -

-


Relay Panel +A32 TB Terminal –X231Relay Panel +A32 .RP Test Block

–S511 Test Position


VL1 VL2 VL3 - 2 4 6 8 9 11 13 15



Relay Panel +A32 .RP Relay –A511(51/5BF) (7SJ621)


10 12 14 16 10 12 14 16 R14 R15 R17 R18

Relay Panel +A32 .RP Relay Display–A511(51/5BF) (7SJ621)

R Y B N

V1 V2 V3 -

10.3. Bay Ref : A30 Cable Feeder10.3.1. Name Plate Details:

Core No. VT-WINDING

Class 1.0/3P

Ratio (Volt) 11kV/√3:110V/√3

Burden(VA) 50

Purpose BCU + Synch Check Relay








10.3.2. VT core and function : BCU+SYNCRatio : 11kV/√3:110V/√3

Injected voltage: R-N: 60 Y-N: 50 B-N: 40 at VT X511: 1,2,3,4 Terminals measure the voltagewith respect to Earth in the following terminal




OFF Position


1 2 3 4 1 3 5 7 2 4 6 8




2 4 6 8 511 512 513 514 511.A 512.A 513.A 514.A





L1 L2 L3 - 2,10 2,10 2,10 - 511.A 512.A 513.A 514.A

-

SWGR Panel +A30 Synch SelectorSwitch -S25 OFF


SWGR Panel +A30 Synch SelectorSwitch -S25 ON

R Y - - R Y - - R Y - -

1 3 - - 2 4 - - 2 4 - -

- - - - - -

SWGR Panel +A30 TB Terminal –X4 SWGR Panel +A12 TB Terminal –X4Relay Panel +A12 TB Terminal

–X720

R Y - - R Y - - R Y - -

661 663 - - 684 686 - - 13 14 - -

- - - - - -




R Y - - R Y - - R Y - -

7 9 - - 8 10 - - 8 10 - -

- - - - - -




R Y - - R-Y - - R Y B N

E13 E14 - - VL3 - - 511 512 513 514

- - - -








Relay Panel +A30 TB Terminal–X710.A

Relay Panel +A30 .RP Test Block–S201.A Test Position



1 2 3 4 1 3 5 7 2 4 6 8


Relay Panel +A30 .RP Relay –A201BCU (7SJ632)

Relay Panel +A30 .RP Relay Display–A201 BCU (7SJ632)


2 4 6 8 R14 R15 R17 R18 VL1 VL2 VL3 -

Relay Panel +A30 .RP Relay –A201.AO/P Contact

Relay Panel +A30 .RP Relay –A201.AO/P Contact

Relay Panel +A30 TB Terminal–X231

R Y - - R Y - - R Y - -

R1 R5 - - R4 R6 - - 2 4 - -

- - - - - -




R Y - - R Y - - R Y - -

21 22 - - 7 9 - - 8 10 - -

- - - - - -




R Y - - R Y - - R-Y - -

8 10 - - E13 E14 - - VL3 - -

- - - - - -



Remarks:


R 63.5

Y 63.5

B 63.5








10.4. Bay Ref: A10 Aux.TR. Feeder10.4.1. Name Plate Details:

Core No. VT-WINDING

Class 1.0/3P

Ratio (Volt) 11kV/√3:110V/√3

Burden(VA) 50 VA

Purpose BCU+SYNC.

10.4.2. VT core and function : BCU+SYNC.Ratio : 11kV/√3 / 110V/√3

Injected voltage : R-N: 60 Y-N: 50 B-N: 40 at VT X511: 1, 2, 3 & 4 terminals measure the voltage withrespect to Earth in the following terminal




OFF Position


1 2 3 4 1 3 5 7 2 4 6 8




2 4 6 8 511 512 513 514 511.A 512.A 513.A 514.A





L1 L2 L3 - 2,10 2,10 2,10 - 511.A 512.A 513.A 514.A

-



SWGR Panel +A10 Synch SelectorSwitch -S25 ON

R Y - - R Y - - R Y - -

1 3 - - 2 4 - - 2 4 - -

- - - - - -

SWGR Panel +A10 TB Terminal –X4 SWGR Panel +A12 TB Terminal –X4Relay Panel +A12 TB Terminal

–X710

R Y - - R Y - - R Y - -

661 663 - - 661 663 - - 14 15 - -

- - - - - -











R Y - - R Y - - R Y - -

9 11 - - 10 12 - - 10 12 - -

- - - - - -




R Y - - R-Y - - R Y B N

R13 R14 - - VL4 - - 511 512 513 514

- - - -





1 2 3 4 1 3 5 7 2 4 6 8


Relay Panel +A10 .RP Relay –A201BCU (7SJ647)

Relay Panel +A10 .RP Relay Display–A201 BCU (7SJ647)


2 4 6 8 R15 R17 R18 R16 VL1 VL2 VL3 -



R 63.5Y 63.5B 63.5


Remarks:








11. CT PRIMARY INJECTION TEST

11.1. Bay Ref : A18 Incomer Feeder11.1.1. Name Plate Details:

Description (CT1) Core 1 (CT1) Core 2 (CT2) Core 1

Ratio 2500/1A 2500/1A 3200/1A


Rated Output(VA) - 15 VA -

CT Sec. Resistance(Rct) @75C <8.75Ω <14Ω <18Ω

Knee Point Voltage (VK) ≥230V - ≥563V

I mag at VK/2 ≤ 30mA - ≤30mA

PurposeMAIN PRTN

87T/REF (DIFF.)

Dir-OC/EF+BCU+

AMMETER

BB PRTN87BBP

Note:1. Temporary short for REF protection& Bus bar protection stabilizing resistor

11.1.2 CT Core And Function: A CT CORE-1, DIFF PRTN

Ratio : 2500/1AInjected Current : A

Inj.Phase

Secondary Current in mA Measured atSWGR Panel A18 CT Terminal

-X11Relay Panel +B11 .RP TB Terminal

X650Relay Panel +B11 .RP

Test Block –S871.B Service Position


612 615 618 613 1 3 5 7 21 23 25 27

R-E

R-Y

R-B

Relay Panel +B11 .RP TestBlock –S871.B Service Position

Relay Panel +B11 .RP Main Relay87T (7UT613)

Relay Panel +B11 .RPDisplay Pri. Current at Relay87T

Main 7UT613


22 24 26 28 R1//R2 R3/R4 R5/R6 -- IL1M2 IL2M2 IL3M2 -

R-E

R-Y

R-B --








Inj.Phase

Relay Panel+B11 .RPDisplay Sec. Current at Relay 87T

Main 7UT613



IL1M2 IL2M2 IL3M2 -R Y B N R Y B N

2 4 6 8 1 3 5 7

R-E

R-Y

R-B -- --

Relay Panel +B11 .RP TBTerminal -X650

Relay Panel+A18 .RPTB Terminal -X610

Relay Panel+A18 .RPTest Block –S871 Service Position


10 11 12 13 5 6 7 8 21 23 25 27

R-E --

R-Y

R-B

Relay Panel+A18 .RPTest Block –S871 Serice Position

Relay Panel+A18 .RP-Relay 87NL/51 (7SJ611)

Relay Panel+A18 .RP- Display Pri.Current at Relay 87NL/51 (7SJ611)

R Y B N R Y B NIL1 IL2 IL3 3I0

22 24 26 28 Q1/Q2 Q3/Q4 Q5/Q6 --

R-E --

R-Y

R-B

Relay Panel+A18 .RP- DisplaySec. Current At Relay 87NL/51

(7SJ611)

Relay Panel+A18 .RP-B1 Metrosil

Relay Panel+A18 .RP-

R102 Resistor

Relay Panel+A18 .RP –

Test Block –S871Service Position

Relay Panel+A18 .RP –Test Block –871Service

Position

IL1 IL2 IL3 3I0N N N N N N N N

1 2 1 2 1 3 2 4

R-E

R-Y

R-B

Relay Panel+A18 .RP-

Relay87NL/51(7SJ611)

Relay Panel+A18 .RP-Display Pri.Current at

Relay 87NL/51(7SJ611)

Relay Panel+A18 .RP-Display Sec.

Current atRelay 87NL/51(7SJ611)P141

------- --------- ----------

N3I0 3I0

- - - -

Q7/Q8 - - - -

R-E - - - -








R-Y - - - -

R-B - - - -

11.1.3. CT Core and Function: A18 CT1-CORE-2, OC/EF+BCU+AMMETERRatio : 2500/1AInjected Current : A

Inj.Phase

Secondary Current in mA Measured at

SWGR Panel A18 TBTerminal -X11

Relay Panel +A18 .RP TBTerminal -X620

Relay Panel +A18.RP TB Terminal

-X620

RTCC Panel .RPTB Terminal –X620

R Y B N R Y B N B B B B

622 625 628 623 1 3 5 7 10 13 1 4

R-E

R-Y

R-B

RTCC Panel–A1RelayTapcon260

MI

RTCC Panel –A1Relay Display

Tapcon260

Relay Panel+A18 .RP –Test Block –S671.A Service

Position


B B B R Y B N R Y B N

5 9 I 21 23 25 27 22 24 26 28

R-E

R-Y

R-B

Relay panel+A18 .RP –Relay 67/67N/51/50BF (7SJ621)

Relay panel+A18 .RP – RelayDisplay Pri -67/67N/51/50BF

(7SJ621)

Relay panel+A18 .RP – Relay DisplaySec -67/67N/51/50BF (7SJ621)


Q1/Q2 Q3/Q4 Q5/Q6 Q7/Q8 IL1 IL2 IL3 IE IL1 IL2 IL3 IE

R-E

R-Y

R-B








Inj.Phase


Relay Panel+A18 .RP – TestBlock –S671.A Service Position

Relay Panel+A18 .RP –Test Block –S201 Service Position


2 4 6 8 1 3 5 7 21 23 25 27

R-E

R-Y

R-B

Relay Panel+A18 .RP –Test Block –S201 Service Position

Relay Panel+A18 .RP –A201BCU (7SJ647)

Relay Panel+A18 .RP RelayDisplay Pri–A201BCU (7SJ647)


22 24 26 28 Q1/Q2 Q3/Q4 Q5/Q6 Q7/Q8 IL1 IL2 IL3 IE

R-E

R-Y

R-B

Relay Panel+A18 .RP Relay DisplayPri–A201BCU (7SJ647)

Relay Panel+A18 TB Terminal–X620

SWGR Panel+A18TB Terminal- X11


IL1 IL2 IL3 IE 10 11 12 13 661 663 665 667

R-E

R-Y

R-B

SWGR Panel+A18 Selector Switch–S401

SWGR Panel+A18 AmmeterDisplay –P401

R Y B N R Y B N

2 6 10 1 9 10 11 12

R-E

R-Y

R-B








11.1.4. CT Core and Function : A18 CT2-CORE-1, BB PRTN.Ratio : 2500/1AInjected Current : A

Inj.Phase


SWGR Panel A18TB Terminal – X11

BB Relay Panel +RP1TB Terminal-X610

BB Relay Panel+A00 .RPR103,104,105(Resistor)


634 637 640 633 2 18 34 52 R(1,2) Y(1,2 B(1,2) -

R-E -

R-Y -

R-B -

BB Relay Panel +RP –Test Block –S87Z1 Service Position

BB Relay Panel +RP –Test Block –S87Z1 Service Position

BB Relay Panel +RP–F87Z1 (7SJ611)


21 23 25 27 22 24 26 28 Q7/Q8 Q7/Q8 Q7/Q8 --

R-E --

R-Y --

R-B --

11.1.7. CT Star Point Conformation:


Remarks:

Description CT Core Core-1 Core-2 Core-3 Core-4 Core-5

Star Point

Conformation

S1/S2








11.2. Bay Ref: A12 Bus Section Feeder


Description CT1 - Core 1 CT2 - Core 1 CT2 - Core 2

Ratio 3200/1A 3200/1A 3200/1A


Rated Output (VA) - 15 VA -

CT Sec. Resistance (Rct)@75C

≤18Ω ≤18Ω ≤18Ω

Knee Point Voltage (VK) ≥563V - ≥563V

I mag at VK/2 ≤8.8mA - ≤8.8mA

Purpose B/B PRTN.-87B/50BFO/C + E/F-

50/51N+BCU+METERB/B PRTN.-87B/50BF.

Note:1. Temporary short for Bus bar protection stabilizing resistor

11.2.2. CT Core And Function : CT1, CORE-1 87BB1Ratio : 3200/1AInjected Current : A

Inj. Phase Secondary Current in mA Measured at

SWGR Panel A12TB Terminal-X11

BB Relay Panel +RP1 TBTerminal– X610

BB Relay Panel +RP1 –B103,B104,B105-(Metrosil)

R Y B N R Y B NR(1,2) Y(1,2) B(1,2) -

603 607 611 605 1 17 33 49

R – E -

R – Y -

R – B -

BB Relay Panel +RP1–R103,R104,R105- Resistor

BB Relay Panel +RP1 – TestBlock –S87Z1 Service Position

BB Relay Panel +RP1 – Test Block –S87Z1 Service Position

R(1,2) Y(1,2) B(1,2) -R Y B N R Y B N

1 3 5 7 2 4 6 8

R – E -

R – Y -

R – B -

BB Relay Panel +RP1- Relay 87BB1BBP (7SJ611)

BB Relay Panel +RP1- RelayDisplay Pri- 87BB1 BBP

(7SJ611)

BB Relay Panel +RP1- Relay DisplaySec- 87BB1 BBP (7SJ611)









Q7/Q8 Q7/Q8 Q7/Q8 -- 3I0 3I0 3I0 -- 3I0 3I0 3I0 --

R – E

R – Y

R – B

11.2.3. CT Core And Function : CT2 - CORE-1,51/51N+BCU+METERINGRatio : 3200/1AInjected Current : A

Inj Phase Secondary Current in mA Measured at

SWGR Panel BUS CT1TB Terminal X11

Relay Panel +A12 .RPTB Terminal –X610

Relay Panel+A12 .RP Test Block–S511 Service Position


612 615 618 613 1 3 5 7 21 23 25 27

R-E

R-Y

R-B

Relay Panel+A12 .RP TestBlock –S511 Service Position

Relay Panel +A12 .RP Relay (51/50BF )7SJ621

Relay Panel +A12 .RP RelayDisplay Pri-(51/50BF ) 7SJ621



R – E

R – Y

R – B

Relay Panel +A12 .RP RelayDisplay Sec-(51/50BF )

7SJ621

Relay Panel+A12 .RP Test Block –S511Service Position

Relay Panel+A12 .RP Test Block–S511 Service Position


IL1 IL2 IL3 IE 2 4 6 8 1 3 5 7

R – E

R – Y

R – B

Relay Panel+A12 .RP TestBlock –S201 Service Position

Relay Panel+A12 .RP Test Block –S201 Service Position

Relay Panel+A12 .RP Relay –A201 (7SJ647)


21 23 25 27 22 24 26 28 Q1/Q2 Q3/Q4 Q5/Q6 Q7/Q8

R – E

R – Y

R – B








Relay Panel+A12 .RP RelayDisplay Pri –A201 (7SJ647)

Relay Panel+A12 .RP Relay DisplaySec –A201 (7SJ647)

Relay Panel+A12 TB Terminal –X610



R – E

R – Y

R – B

SWGR Panel+A12TB Terminal –X11

SWGR Panel+A12Selector Switch –S401

SWGR Panel+A12Ammeter –P401


623 626 629 630 2 6 10 1 - - - -

R – E

R – Y

R – B

11.2.4. CT Core And Function : CT2- CORE-2,87BB2Ratio : 3200/1AInjected Current : A

Inj Phase Secondary Current in mA Measured at

SWGR Panel BUS-CT1TB Terminal -X11

BB Relay Panel +RP1 TBTerminal –X610

BB Relay Panel + RP1 –B103,104,105-(Metrosil)

R Y B N R Y B NR(1,2) Y(1,2) B(1,2) -

623 626 629 622 2 19 36 55

R-E -

R-Y -

R-B -

BB Relay Panel +RP1 –R103,104,105- (Resistor)

BB Relay Panel + RP1 Test Blok-S87Z2 Service Position

BB Relay Panel + RP1 Test Blok-S87Z2 Service Position


R(1,2) Y(1,2) B(1,2) - 21 23 25 27 22 24 26 28

R – E -

R – Y -

R – B -

BB Relay Panel + RP1-Relay 87BB2 BBP 7SJ611

BB Relay Panel + RP1- DisplayPri. Current at Relay87BB2 BBP

7SJ611

BB Relay Panel + RP1- Display Sec.Current at Relay 87BB2 BBP

7SJ611









Q7/Q8 Q7/Q8 Q7/Q8 -- 3I0 3I0 3I0 -- 3I0 3I0 3I0 --

R – E

R – Y

R – B


Note:

1. Confirmation of connection of CT as per drawing :2. Confirmation of isolating links and shorting links as per drawing :3. Confirmation of earthing of star at single point :4. CT terminal tightness :5. Core identification checks :

Remarks

Description CT Core CTI-Core-1 CT2-Core-1 CT2-Core-2









11.3. Bay Ref : A30 Cable Feeder :11.3.1. Name Plate Details:

Description CT1-Core 1 CT1-Core 2 CT2-Core 1

Ratio 400 - 300/1A 400 - 300/1A 2500/1A


Rated Output(VA) 15-11.5 VA - -

CT Sec. Resistance (Rct) @75C < 2 – 1.5Ω <1.4 – 1.05Ω <18Ω

Knee Point Voltage (VK) - ≥425-320V ≥ 563V

I mag at VK/2 -≤ 50-70mA ≤8.8 mA

PurposeOC/EF+BCU+METER

50/50N/51/51N/49CPILOT WIRE PRTN 87P BB PRTN 87BB1

Note:1. Temporary short for bus bar protection stabilizing resistor :

11.3.3. CT Core And Function : CT-CORE-1, OC/EF+BCU+METERINGRatio : 400 - 300/1AInjected Current : A

Injphase


SWGR PanelA30TB Terminals - X11

Relay Panel +A30 .RP- TBTerminal -X610.A

Relay Panel +A30 .RP –Test Block –S502.A -Service Position


602 606 610 604 1 3 5 7 21 23 25 27

R-E

R-Y

R-B

Relay Panel +A30 .RP Test Block–S502.A -Service Position

Relay Panel +A30 .RP- Relay50/50N/51/51N (7SJ802)

Relay Panel +A30 .RP- Display Pri.Current at Relay 50/50N/51/51N

(7SJ802)


22 24 26 28 F1/F2 F3/F4 F5/F6 F7/F8 IL1 IL2 IL3 IE

R-E

R-Y

R-B








Relay Panel +A30 .RP- DisplayPri. Current at Relay 50/50N/51/51N

(7SJ802)




IL1 IL2 IL3 IE 2 4 6 8 1 3 5 7

R-E

R-Y

R-B

Relay Panel +A30 .RP –Test Block –S201.A Service Position


Relay Panel +A30 .RP -201.ABCU 7SJ632


21 23 25 27 22 24 26 28 Q1/Q2 Q3/Q4 Q5/Q6 Q7/Q8

R-E

R-Y

R-B

Relay Panel +A30 .RP-201.ADisplay Pri. Current- BCU 7SJ632

Relay Panel +A30 .RP-201.A DisplayPri. Current- BCU 7SJ632

Relay Panel +A30 .RP-TB Terminal X610.A



R-E

R-Y

R-B

SWGR Panel A30TB Terminal -X11

SWGR Panel A30 Ammeterselector switch (-S401)

SWGR Panel A30Ammeter (-P401)


661 662 663 664 2 6 10 1 - - - -

R-E

R-Y

R-B


CONTRACT NO.: GTC/371C/2010 TITLE:SAT PROCEDURE AND TEST FORMS FOR 11KV SWGRPAGE: 100 OF105

DOC. NO.: PH10-1C-10-15-P002 REV. B DATE:





11.3.4. CT Core And Function : CT2-Core-2, PILOT WIRE PRTN 87PRatio : 400 - 300/1AInjected Current : A

Injphases


SWGR Panel A30TB Terminal –X11

Relay Panel +A30 TB Terminal–X620.A



622 626 630 624 1 3 5 7 21 23 25 27

R-E

R-Y

R-B

Relay Panel +A30 .RP –Test Block–S501.A Service Position

Relay Panel +A30 .RP- Relay 50GR(7SG111)



22 24 26 28 27/28 25/26 23/24 21/22 1 3 5 7

R-E

R-Y

R-B


Relay Panel +A30 .RP- TB Terminal-X620.A

Relay Panel +A30 .RPRelay 87P (7PG211)


2 4 6 8 10 12 14 16 23 25 27 24

R-E

R-Y

R-B








11.3.5. CT Core And Function : CT2-Core-1, BUSBAR PRTN(87B)Ratio : 3200/1AInjected Current : A

Injphases



Relay Panel +A30 .RP –TB Terminal –X610

Relay Panel +BB .RP1 –R103,104,105(Resistor)

R Y B N R Y B NR Y B N

644 647 650 643 4 20 36 58

R-E

R-Y

R-B



Relay Panel +BB .RP1 - Relay87BB1 BBP (7SJ611)


21 23 25 27 22 24 26 28 Q7/Q8 Q7/Q8 Q7/Q8 -

R-E -

R-Y -

R-B -

Relay Panel +BB .RP - DisplayPri. Current at

Relay 87BB1 BBP (7SJ611)

Relay Panel +BB .RP - Display Sec.Current at

Relay 87BB1 BBP (7SJ611)------

R Y B N R Y B N - - - -

3I0 3I0 3I0 - 3I0 3I0 3I0 - - - - -

R-E - - - -

R-Y - - - -

R-B - - - -

CT Star Point Formation:

Description CT Core CT1- Core-1 CT1- Core-2 CT2- Core-1

Star Point

Conformation

S1/S2









Remarks:

11.4. Bay Ref : A10 Station Transformer Feeder11.4.1 Name Plate Details:

Description CT1- Core 1 CT1- Core 2 CT2- Core 1

Ratio 150/1A 150/1A 3200/1A

Class 5P20 5P20/1.0 PX

Rated Output(VA) 15 VA 15 VA -

CT Sec. Resistance (Rct) @75C <3Ω <3Ω <18Ω

Knee Point Voltage (VK) - - ≥563V

I mag at VK/2 - - ≤ 8.8mA

Purpose OC/EF + METERING BCU+AMMETER BUSBAR PRTN.

Note:1. Temporary short for REF protection & Bus bar protection stabilizing resistor

11.4.2. CT Core and Function : CORE-1, OC/EF+METERINGRatio : 150/1AInjected Current : A

Injphases



Relay Panel +A10 .RP-TB Terminal –X610

Relay Panel +A .RP–Test Block –S511 Service Position


602 605 608 603 1 3 5 7 21 23 25 27

R-E

R-Y

R-B

Relay Panel +A10 .RP– Relay Panel +A10 .RP- Relay Relay Panel +A10 .RP- Display








Test Block –S511 Service Position 50/51/50N (7SJ611) Pri. Current at Relay 50/51/50N(7SJ611)



R-E

R-Y

R-B

Relay Panel +A10 .RP- DisplayPri. Current at Relay 50/51/50N

(7SJ611)--- ---

R Y B N --- --- --- --- --- --- --- ---

IL1 IL2 IL3 IE --- --- --- --- --- --- --- ---

R-E --- --- --- --- --- --- --- ---

R-Y --- --- --- --- --- --- --- ---

R-B --- --- --- --- --- --- --- ---

11.4.3. CT Core and Function : CT1-CORE-2, BCU + MeteringRatio : 150/1AInjected Current : A

Injphases



Relay Panel +A10 .RP-TB Terminal –X620

Relay Panel +A10 .RP-Test Block –S201 Service Position


622 625 628 623 1 3 5 7 21 23 25 27

R-E

R-Y

R-B

Relay Panel +A10 .RP-Test Block –S201 Service Position

Relay Panel +A10 .RP- Relay –A201BCU 7SJ647

Relay Panel +A10 .RP- RelayDisplay Pri –A201 BCU 7SJ647



R-E

R-Y

R-B

Relay Panel +A10 .RP- RelayDisplay Sec –A201 BCU 7SJ647

Relay Panel +A10 .RP-TB Terminal -X620

SWGR Panel +A10 .RPTB Terminal – X11


IL1 IL2 IL3 IE 10 11 12 13 661 663 665 667

R-E








R-Y

R-B

SWGR Panel+A10 AmmeterSelector Switch (-S401)

SWGR Panel +A10 AmmeterDisplay (-P401)

-

R Y B NR Y B N - - - -

2 6 10 1

R-E - - - -

R-Y

R-B - - - -

11.4.4. CT Core and Function : CT2-CORE-1, BUSBAR PRTNRatio : 3200/1AInjected Current : A

Injphases



Relay Panel+A10 .RP-TB Terminal –X610

Relay Panel +BB .RP1-B103,B104,B105-Metrosil

R Y B N R Y B NR(1,2) Y(1,2) B(1,2) -

644 647 650 643 3 19 35 55

R-E -

R-Y -

R-B -

Relay Panel +BB .RP1-R103,R104,R105 Resistor

Relay Panel +BB .RP1- TestBlock –S87Z1 Service Position

Relay Panel +BB .RP1- Test Block –S87Z1 Service Position

R(1,2) Y(1,2) B(1,2) -R Y B N R Y B N

21 23 25 27 22 24 26 28

R-E -

R-Y -

R-B -

Relay Panel +BB .RP1-Relay 87BB1 BBP 7SJ611

Relay Panel +BB .RP1-Display Pri. Current at

Relay 87BB1 BBP 7SJ611

Relay Panel +BB .RP1-Display Sec. Current at

Relay 87BB1 BBP 7SJ611


Q7/Q8 Q7/Q8 Q7/Q8 -- 3I0 3I0 3I0 -- 3I0 3I0 3I0 --

R-E

R-Y

R-B









Note:

1. Confirmation of connection of CT as per drawing :2. Confirmation of isolating links and shorting links as per drawing :3. Confirmation of earthing of star at single point :4. CT terminal tightness :5. Core identification checks :

Remarks:

Test Kit Details :

S.NO EQUIPMENT MAKE/TYPE SERIALNUMBER

CALIBRATIONDATE

CALIBRATION DUEDATE

1

2

3

4

Description CT Core CT1-Core-1 CT1-Core-2 CT2-Core-1


Documents

Test forms for SS