ASSAMELECTRICITYGRIDCORPORATIONLIMITED

PRECOMMISSIONINGOFTRANSFORMER
COMMISSIONINGFORMATS DOCNO: SUBSTATION: EQUIPMENTIDENTIFICATIONNO:

TransformerBAYNO: DATEOFTESTING: TransformerType: Voltagelevel,kV Current(HVside): MVARTING: A.

2Winding

ICT

132/33 220/132 Current(LVside):

220/132/11

400/220/33

Current(Tertiary):

CHECKLISTOFELECTRICALTESTSCARRIEDOUTFORTRANSFORMER Performed (Yes/No) TestResults OK/NotOK

Sl.No 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20

NameofTests Insulationresistancemeasurement Vectorgrouptest&polaritycheck Shortcircuitimpedancetest Magneticbalancetest Floatingneutralvoltagemeasurement Magnetisationcurrenttest Voltageratiotest InsulationresistancemeasurementsofbushingCT ContinuityTestofBushingCTs SecondarywindingresistanceofbushingCT PolarityTestofBushingCTs CurrentRatiotest Magnetisingcurvesperformance

ContactResistancemeasurement TANDELTA&CAPACITANCEMeasurementofBushings TANDELTA&CAPACITANCEMeasurementof WINDINGS Protectionandalarmtests StabilitytestofDifferentialandREFprotection FrequencyResponseAnalysis MeasurementofWindingResistance

Page1of72

Signature: Name: Designation: (SupplierRep)

Signature: Name: Designation: ErectionAgency:

Signature: Name: Designation: SiteI/C,AEGCL

Signature Name: Designation: T&C,AEGCL

B. CHECKS AFTER RECEIPT OF TRANSFORMER AT SITE:

Description DuringDispatch atfactory Afterreceiptat site

N2Pressure

DewPoint

AmbientTemp

Remarks

NOTE: N2 pressure and dew point should be within permissible range as per graph provided by manufacturer. During storage at site, dew point has to be measured whenever any drop in N2 pressure is observed. During storage at site before commissioning, N2 pressure has to be measured dailyandrecordtobemaintainedinaseparatesheet. b.IMPACTRECORERANALYSIS RECEIVEDIN STATUS HEALTHY Yes CONDITIONATSITE Yes Analysisreport Receivedfrom Manufacturer Before starting of erection BRIEFANALYSIS

No No

Note: Impact Recorder should be detached from the Transformer/ Reactor preferably when the mainunithasbeenplacedonitsfoundation. c.COREINSULATIONCHECK INSULATIONVALUE BetweenCCG BetweenCLG BetweenCCCL (Recommendedvalue>10MOhms)' Note:ShortinglinkbetweenCC,CL&GtoberemovedandIRvaluetobetakenbetweenCCG,CLG &CCCL.

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C.CHECKS/PRECAUTIONSDURINGERECTION i)Activepartoftransformershouldminimumexposedtoatmosphere ii)Duringexposureofactivepartoftransformertoatmosphere: DRY AIR GENERATOR/ Yes DRY AIR CYLINDERS USED: No Remarks

iii)WHILEENTERINGINTRANSFORMERTANK,CHECKAVAILABILITYOFPROPEROXYGEN TRANSFORMER KEPT Yes SEALED WITH N2 IN BETWEEN DIFFERENT ERECTION ACTIVITIES D.PRECOMMISSIONINGCHECKS: Sl DESCRIPTION No 1. Transformer and its auxiliaries are free from visible defects on physical inspection 2. All fittings as per out line general arrangementdrawing. 3. Check main tank has been provided with doubleearthing 4. Check neutral is grounded through separate connections. Ensure metallic requirements as per specification in earthingstripsused 5. Check that Marshalling box, OLTC driving gear, Diverter, Radiator bank, Pump & Fanmotoretchasbeenearthed 6. All nuts and bolts are tightened correctly as per specified torque (as per manufacturersrecommendation) 7. Checktightnessofterminalconnectors 8. Check levelling of transformer and its accessories 9. Erectioncompletioncertificatealongwith listofoutstandingactivitiesreviewed 10. Any paint removed / scratched in transit hasbeentouchedup 11. Bushings are clean and free from physical damages 12. Oilleveliscorrectonallbushings STATUS Yes No REMARKS RECORDDEFICIENCIES,IFANY No Remarks

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13. Check hermetically sealing is intact in all bushings 14. Check oil leakage through any joints / valvesetc. 15. Check oil drain valves are properly closed andlocked. 16. Check oil level in Main / OLTC conservatortank 17. Check oil level at conservator matches withoiltemperatureoftransformer 18. CheckgearboxoillevelinOLTC 19. Check OTI and WTI pockets and replenish theoil,ifrequired 20. check all valves for their opening & closingsequence 21. Check the colour of breather silica gel ( bluewhendry) 22. Check availability of oil in the breather cup 23. Check all rollers are locked and tack welded with rails ( where ever applicable ) 24. Checkbushingtesttapisgrounded 25. Check no debris , loose T & P and oil strainsonandaroundthetransformer 26. Check door seals of marshalling box is intact and all cable gland plates unused holesaresealed 27. Check that pressure relief valve is correctlymounted 28. Ensure unused secondary cores of bushingCT's,ifany,hasbeenshorted 29. Check star point has been formed properlyandgroundedatoneendonlyas perscheme 30. Check that permanent and adequate lightningarrangementsareready 31. Check that labelling and identification is permanentandsatisfactory 32. Check that buchholz relay is correctly mounted with arrow pointing towards conservator 33. Check cables are properly fixed and ensurecableentryatthebottom 34. Ensure all power and control cable terminalsaretightened 35. Checkallcablesandferrulesareprovided with number as per cable schedule (cross ferulingtobeChecked) 36. Check that all cables are correctly glanded

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37. Check external cabling from junction box torelay/controlpanelcompleted 38. Checkthatairhasbeenreleasedfromthe radiators and their headers / OLTC buchholz relay /Main tank / tank/ bushingturretsetc. 39. Checkfireprotectionsystem&is adequate&ready 40. CheckthatCCCL&Gareshorted 41. Check that all radiator bank valves on top andbottomheadersareopen 42. Change over operation of ac supply from SourceitoSourceiichecked 43. Checktheflangesofbushing& OLTCforanycrackafterfixing 44. Check various interlocks provided with fire fighting as per the schematic ref. Drg no:__________ DESCRIPTIONOFINTERLOCKS CHECKED

E.MEASUREMENT OF EARTH RESISTANCE OF ELECTRODE LOCATION VALUE (Before connection to grid) VALUE (After connection to grid) NOTE:ValueofEarthResistance<1.0OHM F.CALIBRATIONOFOTI&WTIPERFORMEDASPERPROCEDURE: Yes No 1 2 3 4

G.DETAILSOFRELAYS/CONTACTORSUSED:SCHEMATICDRAWINGNO.:__________________ Circuit Reference Make SerialNo. Type Number of NO & Number of AI, BI & NCcontacts BO NO NC AI BI+BO

H.EVACUATINGANDOILFILLING: a) Before filling oil, each drum has been physically checked for free moisture and appearance: Yes No b)OILFILTERMACHINE: Page5of72

i). ii). iii). iv). v). vi).

Capacity : Make : Lubricatingoilofvacuumpumpchangedornot: FilterPackscleanedornot : Wholefiltermachineflushedwithfreshoilornot Vacuumobtainedwithoutload(millibar)

: :

c)VACUUMPUMPFOREVACUATIONOFTRANSFORMER: i). ii). iii). iv). LubricatingOilchangedornot Vacuumobtainedwithoutload(millibar) Diameterofvacuumhose(50mm) Dryicechamberemployedornot : : : :

d)OILSTORAGETANK: i). ii). iii). iv). v). Insidepaintedornot : Silicagelbreatherprovidedornot : Anyopeningleftuncovered : CapacityofStoragetank(KL) : Cleanlinessofinsideofpipes/hosestothestoragetank:

e)EXPOSUREDURINGERECTION: i). ExposurehoursduringFirstday,NumberofHours: a. N2filledpressure(PSIorBar) b. NumberofHoursunderN2 c. Ambienttemperature d. RelativeHumidity e. Weather(sunny/cloudy/stormy/rainy) ii). ExposurehoursduringSecondday,NumberofHours: a. N2filledpressure(PSIorBar) b. NumberofHoursunderN2 c. Ambienttemperature d. RelativeHumidity e. Weather(sunny/cloudy/stormy/rainy) iii). ExposurehoursduringThirdday,NumberofHours: a. N2filledpressure(PSIorBar) b. NumberofHoursunderN2 c. Ambienttemperature d. RelativeHumidity e. Weather(sunny/cloudy/stormy/rainy) f)N2SEALINGINCASEOFDELAYINOILFILLING: a. No.ofCylindersusedfordisplacingtheairinsidethetank: b. N2admittedfrombottomvalve Page6of72 : : : : : : : : : : : : : : : :

a. Valveatdiametricallyoppositeendattopkeptopen: b. No.ofCylindersusedforbuildingup2PSI(0.14kg/cm2) InspectionItem 1.Tightnesstest a.Startevacuatingoncompleteunit b.Stopevacuatingat3mbar c. Pressure P1 in kPa, 1 hour after stop evacuating d. Pressure P2 in kPa, 0.5 hrs after readingP1 e. Leakage = (P2P1)X V= If >3.6, continue evacuating, V is the volume of oil as per nameplate. 2.VACUUM a.Pressure0.13kPa(1.3mbar)reached b.Vacuumkeptfor Upto145kV,12Hour 145kV&upto220kV,24Hours 3.OILFILLING a.Oilfillingismade b.OilConservatorwithAirCell c.OLTC 4.STANDINGTIME Upto145kV,12Hours 145kV&upto220kV,48Hours G)RECORDOFDRYINGOUTPROCESS: Dryingoutstartedon: (Hourlyreadingtobetaken) Date Vacuumreading OTIOF Condensate Remarks & sign Vacuum Intransformer TANK Collected total ofsupervising readingin Tank /Rate Engineer Filtration machine Record of filtration and Dry out shall be kept in a register and shall be made a part of the Pre commissioningdocument. Time H)INSULATIONRESISTANCEMEASUREMENT:(USING500VMEGGER): Meggerdetails: ValidityofCalibration: Page7of72 Date: Time: AmbientTemp: Date Time Checked Remarks

Ambienttemperature: SlNo Status Yes A ControlWiring B TapCganger Motor Controlwiring C CoolingSystem FanMotor PumpMotor ControlWiring NOTE:IRvaluesshouldbe>50Mforcables Description Remarks,ifany No

I)INSULATIONRESISTANCEMEASUREMENT:(USING5000VMEGGER): Meggerdetails: ValidityofCalibration: Ambienttemperature: MainWinding AutoTransformer HV+IVtoLV HV+IVtoE LVtoE 2WindingTransformer HVtoE LVtoE HVtoLV TemperatureofOIL: AI=60ss/15s 600sec PI=600s/60s Temp.

IRValue(M) 15Sec 60Sec

J)VECTORGROUPTEST&POLARITYCKECKING CONNECT NEUTRAL POINT WITH EARTH, JOIN 1RI AND 3 RI TERMINALS, APPLY 415V, 3PHASE SUPPLYTOHVTERMINALS Terminal 1R11Y1 1Y11B1 1B11R1 3B11B1 3B11Y1 3R1N 3Y1N 1R1N 2R1N 2Y1N 2B1N VoltageMeasured Page8of72 Remarks

 ENSURE2R1N=2Y1N=2B1N=CONSTANT AS3R1N>3B1N>3Y1N,AND3Y11B1>3B11B1 VECTORGROUPYnaod1ISCONFIRMEDANDPOLARITYVERIFIED K)MEASUREMENTOFWINDINGRESISTANCE(INOHM) WindingResistancemeterdetail: Validityofcalibration: AmbientTemperature: i). HVSideMeasurement Tap positi on 1 2 3 4 5 6 7 8 9b 10 11 12 13 14 15 16 17 Wdg.Resistance,HVN 1R12R1 1Y12Y1 1B12B1 Resistanceat750C R Y B Factory Value at 750C R Y B Remarks OTIreading: WTIreading:

FactoryTestReportRef.NO: ii). INTERMEDIATEVOLTAGESIDE: BetweenWinding Resistance AtSite 2R1N 2Y1N 2B1N iii). LOWVOLTAGESIDE: Page9of72 Resistanceat750C Factory Remarks

Site

BetweenWinding Resistance AtSite 3R1N3B1 3Y13R1 3B13Y1

Site

Resistanceat750C Factory

Remarks

NOTE: LV WINDING RESISTANCE AT FACTORY MEASURED WITHOUT FORMATION OF DELTA. HOWEVER MEASUREMENTS CARRIED OUT AT SITE ARE AFTER FORMATION OF DELTA. HENCE A CORRECTIONFACTOROF1.5TIMESTOBEAPPLIEDINSITERESULTS. L)MAGNETICBALANCETEST: Applysinglephase230VacrossonephaseofHVwindingterminalandneutralthenmeasurevoltage inothertwoHVterminalsacrossneutral.Repeatthetestforeachofthethreephases. Apply 1ph, 230V AC VoltagemeasuredinVolts across(1) Between(2) Between(3) 2R1N 2Y1N 2B1N 2Y1N 2R1N 2B1N 2B1N 2Y1N 2R1N M)FLOATINGNEUTRALVOLTAGEMEASUREMENT Disconnectthetransformerneutralfromtheground Apply 3 phase 415 volts to the high voltage winding and make the measurement in the IV winding withrespecttoneutralandneutralpointtoground. TapPosition Normal() Normal() Normal() HVWinding 1RN 1YN 1BN Voltage Applied IVWinding 2RN 2YN 2BN NEarth Voltage Measured Remarks, any if Remarks

Apply 3 phase 415 volts to the intermediate voltage winding and make the measurement in the tertiarywindingwithrespecttoneutralandneutralpointtoground. IVWinding 2RN 2YN 2BN VoltageApplied LVWinding 3RN 3YN 3BN NEarth Voltage Measured Yes/No Remarks,ifany

Check:Afterthetest,neutralreconnectedtoGround: N)MAGNETISATIONCURRENTTEST:

Page10of72

TestingInstrumentdetail: TestingInstrumentCalibrationvalidornot: Ambienttemperatureatthetimeoftest: TemperatureofOIL: i). APPLY1PHASEACSUPPLYONHVTERMINALSANDKEEPIV&LVOPEN TapPosition Voltage Current Factory test Remarks Applied(V) Measured(mA) value Lowest() RN Rph YN Yph BN Bph Normal() RN Rph YN Yph BN Bph Highest() RN Rph YN Yph BN Bph ii). APPLY1PHASEACSUPPLYONIVTERMINALSANDKEEPHV&LVOPEN TapPosition Voltage applied Currentmeasured Remarks (Volts) inLVside(mAmps) Normal() 2RN 2YN 2BN P)VOLTAGERATIOTEST: TestingInstrument(TRM)detail: TestingInstrumentCalibrationvalidornot: Ambienttemperatureatthetimeoftest: TemperatureofOIL: i). RatioHV/IV Tap Pos 1 2 3 4 5 6 7 8 9 10 11 12 Voltageapplied 1RN 1YN 1BN Voltagemeasured 2RN 2YN 2BN Page11of72 Ratio R FactoryRatio R Y

13 14 15 16 17

ii). RATIO:HV/LV Tap Voltageapplied Position 1RN 1YN 1BN Lowest Normal Highest iii). RATIO:IV/LV Voltagemeasured 3RN 3YN 3BN Ratio R Y FactoryRatio R Y

Tap Voltageapplied Voltagemeasured Ratio Position 2RN 2YN 2BN 3RN 3YN 3BN R Y Lowest Q)OILCHARACTERISTICS: Date: OTIreading: Time: AmbientTemp: WTIreading:

FactoryRatio R Y B

SampletobecollectedbeforeCharging&followingvaluetobeachieved: BDV:Min70kV MoistureinPPM:Min10 Tandelta(900C):Max0.1 Resistivity:Min6x1012Ohmcm InterfacialTensionat270C:Min0.035N/m OILSample BDV(kV) Moisture (PPM) Tandelta Resistivity (Ohmcm) Inter facial tension (N/m) Remarks

MainTank Top Bottom OLTC

R)DISSOLVEGASANALYSIS DISOLVE OILSAMPLESCHEDULE Page12of72

GASES

Before Charging

TotalGas% H2 CH4 C2H4 C2H6 C2H2 CO CO2 O2 N2

24Hrs After Charging

7Days After Charging

15Days After Charging

01Month After Charging

03Month After Charging

S)TestonOLTC: Sl No 1 2 3 4 5 6 7 8 9 10 11 12 T)OPERATIONALTESTOFOTHEREQUIPMENTS i). CHECKINGOFCOOLINGEQUIPMENTS a) RotationDirectionofPumps: OK b) RotationDirectionofFans: OK ii). PROTECTIONCHECKS Eqpt. SettingValue FanNo 1 2 3 4 5 6 Status OK NotOK Visualinspectionofequipment Manual operation on all taps ( local ) with confirmation oftheno.ofrevolutionsandLockingatextremetaps Overloaddeviceofdrivingmotor Localoperation(Electrical) Remoteoperation(Electrical) Tappositionindicator CheckoperationwithMasterFollowerscheme(parallel operation) Outofsteprelay StepbyStepContactor LimitSwitch Windingresistanceatalltaps Continuity test of winding during one Complete cycle of operation Description Remarks

NotOk NotOk PickupValue SinglePhasing Preventioncheck

Page13of72

7 8 9 10 11 12 PumpNo 1 2 3 4

U)INSULATIONRESISTANCEMEASUREMENTOFBUSHINGCTs:(USING500VMEGGER) Between EarthCoreI EarthCoreII EarthCoreIII EarthCoreIV CoreICoreII CoreICoreIII CoreICoreIV CoreIICoreIII CoreIICoreIV CoreIIICoreIV HV Rph IV Rph Neutral Yph Bph Rph LV Yph

Yph

Bph

Bph

V)CONTINUITYTESTOFBUSHINGCT's Core CoreI CoreII CoreIII CoreIV Between Terminal 1S11S2 2S12S2 3S13S2 4S14S2 HV Rph IV Rph Neutral Yph Bph Rph LV Yph

Yph

Bph

Bph

W)SECONDARYWINDINGRESISTANCEOFBUSHINGCT's(INOHM) i). HVSIDE Core COREI COREII COREIII COREIV Between Terminal 1S11S2 2S12S2 3S13S2 4S14S2 RPhase() Factory Site YPhase() Factory BPhase() Factory

Site

Site

Page14of72

ii). IVSIDE Core Between Terminal COREI 1S11S2 COREII 2S12S2 COREIII 3S13S2 COREIV 4S14S2 iii). LVSIDE Core COREI COREII COREIII COREIV Between Terminal 1S11S2 2S12S2 3S13S2 4S14S2 RPhase() Factory Site YPhase() Factory BPhase() Factory

Site

Site

RPhase() Factory Site

YPhase() Factory

Site

BPhase() Factory

Site

iv). NEUTRALSIDE Core COREI Between Terminal 1S11S2 NEUTRAL() Factory Site

X)POLARITYTESTOFBUSHINGCT's:(With1.5VDCSupply) i). POLARITYOFHV&IVBCT CORE Between HV YPH IV YPH

RPH COREI 1S1(+ve) 1S2(ve) COREII 2S1(+ve) 2S2(ve) COREIII 3S1(+ve) 3S2(ve) COREIV 4S1(+ve) 4S2(ve) ii). POLARITYOFLV&NeutralBCT CORE COREI COREII COREIII COREIV Between 1S1(+ve) 2S1(+ve) 3S1(+ve) 4S1(+ve) 1S2(ve) 2S2(ve) 3S2(ve) 4S2(ve) RPH

BPH

RPH

BPH

LV YPH

Neutral BPH

Y)CURRENTRATIOTEST:Measurecurrentonsecondaryterminals i). RPHASE:HVSIDE

Page15of72

CORE S1S2 COREI (1S11S2) COREII (2S12S2) COREIII (3S13S2) COREIV (4S14S2)

Primary % 20% 40% 80% 20% 40% 80% 20% 40% 80% 20% 40% 80%

Current Actual

Secondary Current

Theoretical Ratio

Actual Ratio

% Error

ii). YPHASE:HVSIDE CORE S1S2 COREI (1S11S2) COREII (2S12S2) COREIII (3S13S2) COREIV (4S14S2) iii). BPHASE:HVSIDE CORE S1S2 COREI (1S11S2) COREII (2S12S2) COREIII (3S13S2) COREIV (4S14S2) Primary % 20% 40% 80% 20% 40% 80% 20% 40% 80% 20% 40% 80% Current Actual Page16of72 Secondary Current Theoretical Ratio Actual Ratio % Error Primary % 20% 40% 80% 20% 40% 80% 20% 40% 80% 20% 40% 80% Current Actual Secondary Current Theoretical Ratio Actual Ratio % Error

 iv). RPHASE:IVSIDE CORE S1S2 COREI (1S11S2) COREII (2S12S2) COREIII (3S13S2) COREIV (4S14S2) Primary % 20% 40% 80% 20% 40% 80% 20% 40% 80% 20% 40% 80% Current Actual Secondary Current Theoretical Ratio Actual Ratio % Error

v). YPHASE:IVSIDE CORE S1S2 COREI (1S11S2) COREII (2S12S2) COREIII (3S13S2) COREIV (4S14S2) vi). BPHASE:IVSIDE CORE S1S2 COREI (1S11S2) COREII (2S12S2) COREIII (3S13S2) Primary % 20% 40% 80% 20% 40% 80% 20% 40% 80% Current Actual Page17of72 Secondary Current Theoretical Ratio Actual Ratio % Error Primary % 20% 40% 80% 20% 40% 80% 20% 40% 80% 20% 40% 80% Current Actual Secondary Current Theoretical Ratio Actual Ratio % Error

COREIV (4S14S2)

20% 40% 80% Z)MAGNETISINGCURVESPERFORMANCE:

(NOTTOBEDONEFORMETERINGCORE) KNEEPOINTVOLTAGE(KVP)= i). RPHASE:HVSIDE VOLTAGE Tobeapplied Actual Value 0.25xKVP 0.50xKVP 0.75xKVP 1.00xKVP 1.10xKVP ii). YPHASE:HVSIDE VOLTAGE Tobeapplied Actual Value 0.25xKVP 0.50xKVP 0.75xKVP 1.00xKVP 1.10xKVP iii). BPHASE:HVSIDE VOLTAGE Tobeapplied Actual Value 0.25xKVP 0.50xKVP 0.75xKVP 1.00xKVP 1.10xKVP iv). RPHASE:IVSIDE VOLTAGE Tobeapplied Actual Value 0.25xKVP 0.50xKVP 0.75xKVP 1.00xKVP 1.10xKVP

CURRENTMEASUREMENT(mA) COREI COREII COREIII 1S11S2 2S12S2 3S13S2

COREIV 4S14S2

CURRENTMEASUREMENT(mA) COREI COREII COREIII 1S11S2 2S12S2 3S13S2

COREIV 4S14S2

CURRENTMEASUREMENT(mA) COREI COREII COREIII 1S11S2 2S12S2 3S13S2

COREIV 4S14S2

CURRENTMEASUREMENT(mA) COREI COREII COREIII 1S11S2 2S12S2 3S13S2 Page18of72

COREIV 4S14S2

 v). YPHASE:IVSIDE VOLTAGE Tobeapplied Actual Value 0.25xKVP 0.50xKVP 0.75xKVP 1.00xKVP 1.10xKVP vi). BPHASE:IVSIDE VOLTAGE Tobeapplied Actual Value 0.25xKVP 0.50xKVP 0.75xKVP 1.00xKVP 1.10xKVP AA)CONTACTRESISTANCEMEASUREMENT:At100AMPS NOTE:THEVALUEOFCONTACTRESISTANCESHOULDNOTBEMORETHAN10PERJOINT/ CONNECTOR CONTACTRESISTANCE AcrossHVBushingTerminalBushing AcrossIVBushingTerminalBushing AcrossLVBushingTerminalBushing AcrossNeutralBushingTerminalBushing AcrossSurgeArrestorConnection AB)BUSHINGDETAILS: DrawingNo.__________________________________ Details Make Type Sl.No Rph HVSide Yph IVSide Yph LVSide Yph Neutral Bph RPH() YPH() BPH()

CURRENTMEASUREMENT(mA) COREI COREII COREIII 1S11S2 2S12S2 3S13S2

COREIV 4S14S2

CURRENTMEASUREMENT(mA) COREI COREII COREIII 1S11S2 2S12S2 3S13S2

COREIV 4S14S2

Bph

Rph

Bph

Rph

AC)TANDELTAANDCAPACITANCEMEASUREMENTOFBUSHING TestingInstrumentdetail: Page19of72

TestingInstrumentCalibrationvalidornot: Ambienttemperatureatthetimeoftest: TemperatureofOIL: i). HVSIDE VOLTAGE RPHASE SITE CAPACITANCE(MeasuredValue) YPHASE BPHASE FACTORY SITE FACTORY SITE FACTORY TANDELTA(MeasuredValue) YPHASE BPHASE FACTORY SITE FACTORY SITE FACTORY Remarks

1kV 2kV 10kV VOLTAGE

Remarks

1kV 2kV 10kV ii). IVSIDE VOLTAGE

RPHASE SITE

1kV 2kV 10kV VOLTAGE

RPHASE SITE

CAPACITANCE(MeasuredValue) YPHASE BPHASE FACTORY SITE FACTORY SITE FACTORY

Remarks

1kV 2kV 10kV

RPHASE SITE

TANDELTA(MeasuredValue) YPHASE BPHASE FACTORY SITE FACTORY SITE FACTORY

Remarks

AD)TANDELTAANDCAPACITANCEMEASUREMENTOFWINDINGS TestingInstrumentdetail:____________________________________________________ TestingInstrumentCalibrationvalidornot:___________________ Ambienttemperatureatthetimeoftest:_______________ TemperatureofOIL:__________________ Voltage 2kV 10kV Winding Test Combination Mode HVIV/LV UST CAPACITANCE Site Factory Page20of72 TANDELTA Site Factory Remarks

2kV 10kV 2kV 10kV 2kV 10kV 2kV 10kV

HVIV/LV+G HVIV/LV withGuard LV/HVIV+G LV/HVIV withGuard

GST GSTg GST GSTG

AD)SHORTCIRCUITIMPEDANCETEST TestingInstrumentdetail:____________________________________________________ TestingInstrumentCalibrationvalidornot:___________________ Ambienttemperatureatthetimeoftest:_______________ TemperatureofOIL:__________________ i). HVTOIV TapNo. 1U1(R) (IV OF R AND N SHORTED,LVOPEN) Voltage(V) Current(A) 1V1(Y) (IV OF Y AND N SHORTED,LVOPEN) Voltage(V) Current(A) 1W1(B) (IV OF B AND N SHORTED,LVOPEN) Voltage(V) Current(A)

LOWEST NORMAL HIGHEST ii). IVTOLV(NORMALTAP) SUPPLY SHORT ALL 3 LV BUSHINGS,HVOPEN 2U1N ____________A 2V1N 2W1N iii). HVTOLV(NORMALTAP) SUPPLY SHORT ALL 3 LV BUSHINGS,HVOPEN 1U1N ____________A 1V1N 1W1N ATLOWESTTAP SUPPLY SHORT ALL 3 LV BUSHINGS,HVOPEN 1U1N ____________A 1V1N 1W1N ATHIGHESTTAP

SHORT ALL 3 LV BUSHINGS,HVOPEN _____________A

SHORT ALL 3 LV BUSHINGS,HVOPEN ____________A

SHORT ALL 3 LV BUSHINGS,HVOPEN _____________A

SHORT ALL 3 LV BUSHINGS,HVOPEN ____________A

SHORT ALL 3 LV BUSHINGS,HVOPEN _____________A

SHORT ALL 3 LV BUSHINGS,HVOPEN ____________A

Page21of72

SUPPLY

1U1N 1V1N 1W1N AE)PROTECTIONANDALARMS SL Device No 1. ExcessiveWindingTemperature 2. ExcessiveOilTemperature 3. OilFlowFailure 4. PressureReliefValve 5. MainTankBuchholzrelay 6. OLTCBuchholzrelay 7. FanFailure 8. LowOilLevelGauge(MOLG) 9. Differentialrelay 10. OverloadRelay 11. REF 12. OverCurrent 13. Intertrip,ifany 14. TripFreeCheck 15. BackupOverCurrent 16. OverFlux AF)DETALSOFPROTECTIONSETTINGS: i). DIFFERENTIALPROTECTION:

SHORT ALL 3 LV BUSHINGS,HVOPEN ____________A

SHORT ALL 3 LV BUSHINGS,HVOPEN _____________A

SHORT ALL 3 LV BUSHINGS,HVOPEN ____________A

SETFOR ALARM TRIP NA NA NA NA NA NA NA NA NA NA NA NA

PROVED ALARM TRIP NA NA NA NA NA NA NA NA NA NA NA NA

a. DIFFERENTIALCHARACTERISTICSSETTINGS b. Function c. Pickup Enabled Enabled/Disabled

d. Slope1 e. Break1 f. Break2

Enabled/Disabled Enabled/Disabled Enabled/Disabled

g. Slope2 h. InrushInhibitMode i. j. InrushInhibitLevel

Enabled/Disabled Enabled/Disabled Enabled/Disabled Enabled/Disabled Enabled/Disabled

OverexcitationInhibitFunction

k. OverexcitationInhibitLevel ii). REFPROTECTION REFSETTINGS: a. Function

Enabled

Page22of72

b. Source c. Pickup d. Slope e. PickupDelay f. ResetDelay

iii). OVERFLUXINGPROTECTION: OVERFLUXINGSETTINGS: a. Function b. Source c. Pickup d. Curves Enabled

e. TDMultiplier f. TReset

iv). BACKUPPROTECTION: LVSide: a. OvercurrentSettings: PS __________ TMS HS

______

_________

b. EarthFaultSettings: HVSIDE: c. OvercurrentSettings: PS __________ TMS HS PS TMS HS

__________

______

_________

______

_________

d. EarthFaultSettings: OK/NotOK AG)STABILITYTESTOFDIFFERENTIAL&REFPROTECTION: NOTE : Prove the tripping of associated breakers by actual operation of the various devices and relaysaspertheschemes. AH)FREQUENCYRESPONSEANALYSIS(FRA) Page23of72 PS TMS HS

__________

______

_________

i). Carriedoutaftercompletionofallcommissioningactivities: ii). Interpretationoftestresultscarriedout:

Yes/No Yes/No Yes/No Yes/No

iii). Testresultsmatchingwiththefactoryresults: iv). Factory&sitefratestreportavailableatsite:

AI)allelectricaltestresultscomparedwithFactorytestresultsandfoundtobeinorder:Yes/No CHECKSAFTERCHARGINGOFTRANSFORMER AK)RECORDTHEFOLLOWINGAFTERCHARGING: i). Anyabnormalsoundemanatingfromthetransformer:Yes/No/Remarks ii). Noloadcurrentatrelayterminal: RPhase:______________A YPhase:__________________A BPhase:___________________A CTR:______________________ iii). TemperatureatthetimeofCharging: OTI WTI :_____________0C :_____________0C

Ambienttemperature:______________0C iv). MAXIMUMTEMPERATUREAFTER24HOURS:___________0C v). OLTC electrical operation checked in idle charged condition from min position to max positionandbacktonormalposition: YES/NO vi). Thermovisionscanningdoneatleastafter24hours ofloadingandrepeatedafteroneweek: YES/NO. AL)FINALDOCUMENTATIONREVIEW i). FACTORYTESTRESULTSAREAVAILABLE: YES/NO

ii). FINALDOCUMENTOFPRECOMMISSIONINGCHECKS REVIEWEDANDAPPROVED: YES/NO

Page24of72

iii). DOCUMENTSREGARDINGSPARES,EQUIPMENT,O&M MANNUALSETCAVAILABLEATSITEFORO&MPURPOSE: iv). AFTERMODIFICATION,IFANY,"ASBUILTDRAWINGS" AREAVAILABLEATSITE: Signature: Name: Designation: (SupplierRep) Signature: Name: Designation: ErectionAgency:

YES/NO

YES/NO

Signature: Name: Designation: SiteI/C,AEGCL

Signature Name: Designation: T&C,AEGCL

Page25of72

ASSAMELECTRICITYGRIDCORPORATIONLIMITED PRECOMMISSIONINGOFISOLATORANDGROUNDSWITCH COMMISSIONINGFORMATS DOCNO: BAYNO: SUBSTATION: DATEOFTESTING:

EQUIPMENTSERIALNO:RPhase___________YPHASE____________BPHASE______________ Type: 33 MAKE: 132 220 400

Voltagelevel,kV

CurrentCarryingCapacity:___________A TypeofOperatingMechanism: ControlVoltage:______________VoltDC 1) DETAILS: SL No YES 1. Equipment is free from dirt/dust Foreign materials etc. 2. Equipment is free from all visible defects on physical inspection 3. Support structures, marshalling box Has been providedwithtwoearthingPads/points 4. All nuts and bolts are tightened correctly as per specifiedtorque 5. Equipment erection is complete in all respect as per instruction manual (attach remaining activities, if any) 6. Permanent isolator levelling and identification is done 7. Levelling and alignment of structure and base frame ischecked NO DESCRIPTION STATUS REMARKS, ANY IF

Page26of72

8.

Control box / marshalling kiosk is free from any physicaldefects

9.

Tightness of nuts bolts of terminal connectors are checked

10. Auxiliary contacts and relays have been cleaned and freefromrust/damage 11. Coronaringsareprovidedandproperlyfixed

12. Cableterminationandtightnesscheckedandunused holessealed 13. Externalcablingiscompletedinallrespect

14. All the cable identification tags provided and all cores are provided with identification ferrules at M.B. 15. Allmovingpartsarelubricated

16. Alignment of isolator already made and locking bolt provided,ifany 17. FreenessofmanualoperationisOK

18. Greasing has been made on the main contacts accordingtothemanufacturersinstruction 19. Functional checking of auxiliary Contacts for indicationsandinterlocks 20. Erection completion certificate along with list of outstandingactivitiesreviewed 21. All spare wires to be kept with ferrules but not terminatedattheterminalblocks 22. Earth switch connected to earth through braided wires 23. Interlocks checked as per approved scheme with all combinations 24. CheckthatearthswitchbladealignmentIncondition isatsufficientdistantfromIsolator 25. Check that operation and positioning of the limit switch&theauxiliarycontactsassemblyareok 26. Check that all three phase isolators are Closing & Page27of72

Openingatatime 27. Checkall3earthswitchescloseatthesametime

28. Provision of bimetallic strips ensured wherever applicable 2) MOTORDETAILS: a) Make: b) Sl.No: c) Type: d) HP/KW: e) Volt: f) Ampere:

g) YearofManufacture: h) OverloadSettings: i) Insulation Resistance of Motor Winding (Winding to Earth): (By 500 V Megger):_____________M. 3) ISOLATOROPERATIONALCHECK: a) OperatetheIsolatorandrecordthemotorcurrent: a. Open:_________________A b. Close:_________________A b) OPERATIONOFISOLATORFROMLOCAL/REMOTE: IsolatorOperation LOCAL Open Close c) MEASUREMENTOFOPERATINGTIME OPERATION RPhase CLOSING(Sec) OPENING(Sec) d) AUXILLARYCONTACTSCHECKING Page28of72 PHASE YPhase BPhase CONTROLPANEL REMOTE OK/NOTOK

ISOLATOR

AUXILIARY RPHASE NO NC

OPERATIONTIME YPHASE NO NC BPHASE NO NC

OPERATION RELAY TYPE CLOSE OPEN 4)

INSULATIONRESISTANCETEST(USING5000VOLTMEGGER): ISOLATOROPENCONDITION BETWEEN RPhase MalesidetoGround FemalesidetoGround MalesidetoFemaleside PHASE YPhase BPhase

5)

CONTACTRESISTANCEMEASUREMENT: (TOBEMEASUREDAFTER50OPERATIONS) a) ISOLATORCLOSECONDITION (CONTACTRESISTANCESHOULDBELESSTHAN10/CONNECTOR) ACROSS PHASE RPhase() CONNECTOR(MALESIDE) CONNECTOR(FEMALESIDE) MAINCONTACT(MALE&FEMALE) b) ISOLATOROPENCONDITION&GROUNDSWITCHCLOSE (CONTACTRESISTANCESHOULDBELESSTHAN150/BREAK) Page29of72 YPhase() BPhase()

ACROSS RPhase() MAINCONTACT(MALE&FEMALE) (GROUNDSWITCH) c) ResistanceofOperatingCoil____________________ d) ResistanceofInterlockingCoil____________________ 6) FINALDOCUMENTATIONREVIEW: a) FINALDOCUMENTOFPRECOMMISSIONINGCHECKS REVIEWEDANDAPPROVED: b)

PHASE YPhase() BPhase()

YES/NO

DOCUMENTSREGARDINGSPARES,EQUIPMENT,O&M MANNUALSETCAVAILABLEATSITEFORO&MPURPOSE: YES/NO

c)

AFTERMODIFICATION,IFANY,"ASBUILTDRAWINGS" AREAVAILABLEATSITE: YES/NO

Signature: Name: Designation: (SupplierRep) Signature: Name: Designation: ErectionAgency: Signature: Name: Designation: SiteI/C,AEGCL Signature Name: Designation: T&C,AEGCL

Page30of72

ASSAMELECTRICITYGRIDCORPORATIONLIMITED PRECOMMISSIONINGOFWAVETRAP
COMMISSIONINGFORMATS DOCNO: BAYNO: SUBSTATION: DATEOFTESTING:

EQUIPMENTSERIALNO:RPhase___________YPHASE____________BPHASE______________ Type: MAKE: 132 220 400

Voltagelevel,kV

Currentrating:___________A mHRating: BANDWIDTH:

1. DETAILS:CHECKLIST/TESTING SL No YES 1. Equipment is free from dirt/dust Foreign materials etc. 2. Equipment is free from all visible defects on physical inspection 3. Support structures, has been provided with two earthingPads/points 4. All nuts and bolts are tightened correctly as per specifiedtorque 5. Permanent isolator levelling and identification is done 6. Levelling and alignment of structure and base frame ischecked 7. All insulators & line matching unit are free from any physicaldefects 8. Tightness of nuts / bolts of terminal connectors are checked Page31of72 NO DESCRIPTION STATUS REMARKS, ANY IF

9.

Erection completion certificate along with list of outstandingactivitiesreviewed

10. Check that the tuning unit and Arrestor are properly tightenedAndfreefromanydamage 2. INSULATIONRESISTANCEMEASUREMENT: SL NO Upper Terminal 5000V &Earth LA of the Wave 500V Trap 3. CONTACTRESISTANCEMEASUREMENT: THEVALUESHOULDNOTMORETHAN5PERCONNECTOR/JOINT SL No 1 2 4. FINALDOCUMENTATIONREVIEW: a) Finaldocumentofprecommissioningchecks ReviewedandApproved: Documentsregardingspares,equipment,O&M Manualsetc.availableatsiteforo&mpurpose: Aftermodification,ifany,"asbuiltdrawings" areavailableatsite: ACROSS UpperTerminal BottomTerminal RPhase() PHASE YPhase() BETWEEN MEGGER RPHASE PHASE YPHASE

Permissive BPHASE Value 1000M

1M

BPhase()

YES/NO

b)

YES/NO

c)

YES/NO

Signature: Name: Designation: (SupplierRep)

Signature: Name: Designation: ErectionAgency:

Signature: Name: Designation: SiteI/C,AEGCL

Signature Name: Designation: T&C,AEGCL

Page32of72

ASSAMELECTRICITYGRIDCORPORATIONLIMITED
PRECOMMISSIONINGOFSF6CIRCUITBREAKER
COMMISSIONINGFORMATS DOCNO: SUBSTATION:

BAYNAME/NO: DATEOFERECTION:

DATEOFENERZIZATION:

EQUIPMENTSERIALNO:RPhase___________YPHASE____________BPHASE______________ SERIALNO(FORGOTYPE): Type: 33 MAKE: 132 220 400

Voltagelevel,kV

Currentrating:___________A CONTROLVOLTAGE: DETAILS:CHECKLIST/TESTING SLNo

RATEDBREAKINGCAPACITY:

DESCRIPTION

STATUS YES NO

REMARKS,RECORD DEFICIENCIES,IFANY

1. 2. 3. 4. 5.

6. 7. 8.

Equipment is free from dirt/dust Foreign materialsetc. Equipment is free from all visible defects on physicalinspection Support structures, has been provided with two earthingPads/points All nuts and bolts are tightened correctly as per specifiedtorque Equipment erection is complete in all respect & erectioncompletionCertificatealongwithlistof Outstandingactivitiesreviewed. (ATTACHREMAININGACTIVITIES,IFANY) Permanent pole levelling and Identification is done Levelling and alignment of structure and base frameischecked Control box / marshalling kiosk is free from any

Page33of72

physicaldefects 9. Tightness of nuts bolts of terminal connectors arechecked i) Auxiliary contacts and relays have been cleanedandfreefromrust/damage ii) All spare wires to be kept with ferrules but notterminatedattheterminalblocks iii) Check all the valves in the SF6 pipe line are tightened,dilocouplingaretightened. Slow and power closing operation and opening done.(whereverapplicable) OperatingSystem a) Closing

10.

11. 12.

i). Hydraulic ii). Spring iii). Pneumatic b) Opening i). Hydraulic ii). Spring iii). Pneumatic HYDRAULICSYSTEM ACCUMULATOR a) b) Make SerialNo: Rph: YPh BPh Type YearofManufacture

12.1.

12.1.1.

c) d)

12.1.2. PUMPDETAILS a) b) c) d) e) f) g) Make Type Sl.No Volt Ampere HP/KW YearofManufacture

12.1.3. DETAILSOFRELAYS/CONTACTORSUSED:SCHEMATICDRAWINGNO:____________ MAKE SerialNo. TYPE NO+NC

CIRCUITREFERENCE OilPressuremonitor Closinglockout

Page34of72

Autoreclosinglockout Generallockout

AntiPumpingcontactor Polediscrepancytimer Auxiliary Powercontactor Others 12.1.4. OPERATIONCHECK: Dateoffillinghydraulicoil: Typeofhydraulicoil:

____________________ _____________________

VentingofHydraulicSystemisdone: a) b) c) d) PREFILLINGPRESSUREOFN2 INACCUMULATOR(BARatDeg.C) Pumprunningtimeforcharging Hydraulicsystemfrominitialpressure toworkingpressure CHECKINGSAFETYVALVE(OPEN/CLOSE) HYDRAULICPRESSUREDROPFOR1HR BREAKERONPOSITION BREAKEROFFPOSITION OILPRESSUREMONITOR PUMPON/OFFBAR PUMPRUNNINGTIME AUTORECLOSINGLOCKOUT(OIL) Page35of72 _________ _________ BAR SEC _______ _______ _________ BAR _______ _________ BAR _______ _________ BAR ________ _________ MIN ________ FACTORYTEST _______at C
0

Pump

___________________ ___________________ ___________________ ___________________

PilotValve Accumulator

HydraulicMechanism

SITETEST ______at0C

FACTORYTEST PRESSURECONTACT__________MAKE/BREAK_________ CLOSINGLOCKOUT(OIL) PRESSURECONTACT__________MAKE/BREAK_________ GENERALLOCKOUT(OIL) PRESSURECONTACT__________MAKE/BREAK_________ CHECKINGANTIPUMPINGCONTACTOR PRESSURECONTACT__________MAKE/BREAK CHECKINGLOSSOFNITROGEN PRESSURECONTACT__________MAKE/BREAK BAR BAR BAR

SITETEST _______

_______

_______

OK/NOTOK

OK/NOTOK

12.1.5. OILPRESSUREDROPDURINGOPERATIONSANDPUMPRUNNINGTIMEINSECONDS Sl No 1 Pressurebeforeoperation,BAR PressureafterClosingoperation,BAR Pumprunningtime,Sec 2 Pressurebeforeoperation,BAR PressureafterOpeningoperation,BAR Pumprunningtime,Sec 3 Pressurebeforeoperation,BAR PressureafterClose/Openoperation,BAR Pumprunningtime,Sec 4 Pressurebeforeoperation,BAR PressureafterOpenCloseOpenoperation,BAR Pumprunningtime,Sec 12.2. SPRINGOPERATINGSYSTEM Description FactoryTest Value SiteTest Value

12.2.1. MOTORDETAILS: Make: Volt: Type: Ampere: SerialNo: HP/KW:

Page36of72

ThermalOverloadSetting: DCcurrenttakenbyMotorforchargingtheSpring_______________Amp 12.2.2. DETAILSOFRELAYS/CONTACTORSUSED:SCHEMATICDRAWINGNO:____________ CIRCUITREFERENCE OilPressuremonitor Closinglockout Autoreclosinglockout Generallockout MAKE SerialNo. TYPE NO+NC

AntiPumpingcontactor Polediscrepancytimer Auxiliary Powercontactor Others 12.2.3. SPRINGOPERATINGTIME:

TIMETAKENBYTHESPRINGTOCHARGEFULLYAFTERCLOSINGOFBREAKER DETAILS RPHASE Factory Site Chargingtime 13. SF6DENSITYMONITORDETAILS Make Model SerialNo Rph: Yph: BPh: 13.1. SF6DENSITYMONITORSETTINGS PHASE DETAILS BLOCKING Factory RPH RefillAlarm OperationBlock Site DEBLOCKING Factory Site SF6GASFILLEDAT __________BAR AT_________0CON ____/_____/_____ QuantityofSF6GasFilled ACTUAL RPh YPh BPh ASPERSPEC RPh YPh BPh Remark YPHASE Factory Site BPHASE Factory Site

Page37of72

YPH

RefillAlarm OperationBlock

BPH

RefillAlarm OperationBlock

13.2. MEASUREMENTOFDEWPOINTOFSF6GAS: SLNO NOTE: Dew point measurement of SF6 gas needs to be done pole wise in close loop method withoutanywastageofsf6gas. 13.3. LEAKAGECHECK: SlNo Description RPhase A InitialfillingofSF6Gasat_____0C (ASperTemp.correctionchart) DropinSF6GasPressurein24Hrs Fillingpressureat________0C (Afteralltesting) Additionalleakagetestbycovering IndividualjointwithPolythene _____BAR _____BAR _____BAR Yes/No PHASE YPhase _____BAR _____BAR _____BAR Yes/No BPhase _____BAR _____BAR _____BAR Yes/No Description MeasuredValue

Minimum value of Dew Point as per SF6 Gas supplier/Manufacturer ofCB

B C D

14. COILRESISTANCEMEASUREMENT: SLNO A PHASE RPhase COIL TRIPCOILI TRIPCOILII CLOSECOIL TRIPCOILI TRIPCOILII CLOSECOIL TRIPCOILI TRIPCOILII CLOSECOIL MEASURED VALUE() SERIES RESISTOR() TOTAL ()

YPhase

BPhase

15. CIRCUITARY/OPEARTIONALCHECKS:

Page38of72

SLNO A B C D E F G H I J

CIRCUITREFERENCE TrippingthroughTCI TrippingthroughTCII Closingcircuit ANTIPUMPINGOPERATION (CloseOpenoperation) POLEDiscrepancyfeature BreakerPositionIndication HeaterinSwitchCubicle HeaterinControlCubicle IlluminationinSwitchCubicle IlluminationinControlCubicle

CIRCUITRYCHECK LOCAL REMOTE

OPERATIONALCHECK LOCAL REMOTE

NOTE : In case wiring for remote operation is not ready, please indicate terminal number along with wire ferrule number in switch cubicle where remote cables shall be terminated. Remote operationcanbecheckedfromtheseterminals. 16. OPERATINGTIME(INMILLISECONDS): PHASE RPHMainContact RPHPIR AUXILIARYContact RPHMainContact RPHPIR AUXILIARYContact YPHMainContact YPHPIR AUXILIARYContact YPHMainContact YPHPIR AUXILIARYContact BPHMainContact BPHPIR AUXILIARYContact BPHMainContact BPHPIR AUXILIARYContact BREAK BREAKI BREAKII BREAKI BREAKII BREAKI BREAKII CLOSE OPEN TRIPI TRIPII CLOSEOPENUSING TRIPI TRIPII

17. IRVALUEOFCONTROLCIRCUIT:(Use500VMegger) BeforeMeggeringisolateDCforTripCoilI&IIandClosingCoil COILDETAIL RPhaseTripCoilI RPhaseTripCoilII RPhaseClosingCoilII MEASUREDVALUE(M) Page39of72

YPhaseTripCoilI YPhaseTripCoilII YPhaseClosingCoilII BPhaseTripCoilI BPhaseTripCoilII BPhaseClosingCoilII

18. IRVALUEWITHBREAKEROPEN:(Using5000VMegger) ACROSSOPENCONTACT RPhaseBreakI RPhaseBreakII YPhaseBreakI YPhaseBreakII BPhaseBreakI BPhaseBreakII MEASUREMENTVALUE(M)

19. IR VALUE WITH RESPECT TO EARTH WITH BREAKER CLOSED, EARTH SWITCH AND ISOLATOR OPEN:(USING5000VOLTMEGGER) BETWEEN RPHASEandEARTH YPHASEandEARTH BPHASEandEARTH 20. MINIMUMPICKUPVOLTAGEOFCOILS: COILDETAILS RPhaseTripCoilI RPhaseTripCoilII RPhaseClosingCoil YPhaseTripCoilI YPhaseTripCoilII YPhaseClosingCoil BPhaseTripCoilI BPhaseTripCoilII BPhaseClosingCoil 21. GRADINGCAPACITOR: 21.1. DETAILS MEASUREMENTVALUE(V) MEASUREMENTVALUE(M)

Page40of72

DETAILS

INTERRUPTER1 R Y B

INTERRUPTER2 R Y B

MAKE SerialNo. Capacitancevalue YearofManufacture 21.2.

CAPACITANCEANDTANDELTAMEASUREMENT:(TobedoneonUSTmode) DESCRIPTION R CAPACITANCE: SITE FACTORY TANDELTA: FACTORY SITE INTERRUPTER1 Y B R INTERRUPTER2 Y B

22. CONTACTRESISTANCEMEASUREMENT: SL NO 1 2 3 23. BREAKEROPERATIONCOUNTERREADING: Sl No 1 2 3 PHASE COUNTER TYPE ELECTRICAL READING DATE MECHANICAL RPhase YPhase BPhase PHASE ACROSSEACHPOLE FACTORY SITE INTERRUPTER1 FACTORY SITE INTERRUPTER2 FACTORY SITE

RPhase YPhase BPhase

24. CHECKFORANNUNCIATIONINCONTROLROOM: (Asperthefollowingformatsandrecordthereading) Page41of72

Sl DESCRIPTION NO TEST 1

RESULT OK NOT OK Source I/II DC Switch off the DC Control source in control cubicle DC Fail,ACFail Switch cubicle ON/OFF Source I/II DC Switch off the AC Control source in control cubicle AC Fail,ACFail cubicle Switch ON/OFF ShorttheALARMcontactsofSF6GASDensityMonitor RPhase DENSITY SF6 GAS DENSITY MONITOR LOW YPhase DENSITY SF6 GAS DENSITY MONITOR LOW BPhase DENSITY SF6 GAS DENSITY MONITOR LOW RemovethecableconnectedtoDensityMonitor RPhase DENSITY OPERATION/CLOS MONITOR INGLOCKOUT YPhase DENSITY OPERATION/CLOS MONITOR INGLOCKOUT BPhase DENSITY OPERATION/CLOS MONITOR INGLOCKOUT Pole Give Tripping PD Relay at Breaker Discrepancy command to RPh CBCubicle only and check the operation of Pole DiscrepancyRelay Pole Give Tripping PD Relay at Breaker Discrepancy command to YPh CBCubicle only and check the operation of Pole DiscrepancyRelay Pole Give Tripping PD Relay at Breaker Discrepancy command to YPh CBCubicle only and check the operation of Pole DiscrepancyRelay BreakerAutoTrip Close the breaker Protection and Trip through relay as per Protection which scheme areapplicable

OF SOURCEOF INITIATION

WINDOW/HMI DESCRIPTION

REMARKS

NOTE:ThetrippingdetailsaretobecheckedaspertheSchemeapprovedbydesign. 25. Operationtimemeasurementofpolediscrepancyrelay: 26. Mechanicalcloseinterlockchecked(whereverapplicable): Page42of72 Yes/No

27. FINALDOCUMENTATIONREVIEW: a) b) FactoryTestresultsareavailable Finaldocumentofprecommissioningchecks ReviewedandApproved: Documentsregardingspares,equipment,O&M Manualsetc.availableatsiteforo&mpurpose: Aftermodification,ifany,"asbuiltdrawings" areavailableatsite: YES/NO YES/NO

c)

YES/NO

d)

YES/NO

Signature: Name: Designation: (SupplierRep)

Signature: Name: Designation: ErectionAgency:

Signature: Name: Designation: SiteI/C,AEGCL

Signature Name: Designation: T&C,AEGCL

Page43of72

ASSAMELECTRICITYGRIDCORPORATIONLIMITED
PRECOMMISSIONINGOFCURRENTTRANSFORMER
COMMISSIONINGFORMATS DOCNO: SUBSTATION:

BAYNAME/NO: DATEOFERECTION:

DATEOFENERZIZATION:

EQUIPMENTSERIALNO:RPhase___________YPHASE____________BPHASE______________ Type: DEADTANK: MAKE: LIVETANK:

RATIOSELECTION: Voltagelevel,kV

PRIMARY/SECONDARY 33 132 220 400

YEAROFMANUFACTURE: PURCHASEORDERNO: RATEDDATA&CLASSOFACCURACY: CORE WINDINGI WINDINGII WINDINGIII WINDINGIV WINDINGV 1.0 SL No i). ii). iii). iv). v). vi). DETAIL: DESCRIPTION STATUS YES NO REMARKS RECORD DEFICENCIES, IFANY RATIO BURDEN ACCURACY CLASS KNEE POINT VOLTAGE(KVP)

Equipmentiscleanedandfreefrom Dust/Dirtforeignmaterialsetc. Equipmentisfreefromallvisible defectsonphysicalinspection Checkcttankhasbeenprovided Withdoubleearthing(deadtankCTs) CheckthatCTjunctionboxisearthed Allnutsandboltsaretightened correctlyasperspecifiedtorque Checktightnessofterminalconnector

Page44of72

vii). viii). ix).

x). xi). xii). xiii). xiv). xv). xvi). xvii).

AllfittingsasperOutline GeneralArrangementdrawing. Levellingandalignmentofstructure andbaseframeischecked Erectioncompletioncertificatealong withlistofoutstandingactivities Reviewed Anypaintremoved/scratchedin transithasbeentouchedup CheckprimarypolarityofCT,s erectedasperrelevantdrawing. Checkhermeticallysealingisintact Checktheoillevelandleakage throughanyjoints/Sec.Terminals Checkoildrainvalveisproperly Closedandlocked. OilLevel&Oilsampling N2pressurechecked(whereverapplicable) Oillevelontopchambergaugeglass

xviii). BDVofoilsampletakenfromtank bottomdrainvalve(onlyifNitrogen Pressureismeasuredzero) xix). Allthecableidentificationtags providedandallcoresareprovided withidentificationferrulesatM.B. xx). Checksecondarycableendboxis properlyfixedandensurecableentry atthebottomandunusedholessealed xxi). Ensureinterpolecablingiscompleted Andcheckthecontinuity. xxii). ChecktheIRvalueofsecondarycable xxiii). Check external cabling from junction box to relay/controlpanelcompleted xxiv). Ensureunusedsecondarycores, ifany,hasbeenshorted xxv). Checkstarpointhasbeenformed properlyandgroundedatoneendonly xxvi). ChecksparkgapsettinginP1terminal (whereverprovided/possible) Permanentpolelevellingand identificationmarkingsmade xxvii). CheckTANDELTAtesttapisproperly earthed xxviii). Check that lugs used in secondary circuit are ofringtype xxix). Check direction of PRIMARY (P1/ P2) w.r.t.

Page45of72

xxx). 2.0

BUS/LINEonerection Provisionofbimetallicstrips(Cu+AL) ensuredwhereverapplicable

INSULATIONRESISTANCEMEASUREMENT:(USING5KVMEGGER) SlNo.ofMegger: Make: Calibrationvalidupto:_____/______/______ Ambienttemperature:_______0C RelativeHumidity: NOTE: A)RemovetheconnectedearthingtosysteminvolvingCTundertest B)DisconnecttheconnectedterminalsofCTM.Box C)Permissiblevaluesis1000M.

SL No 1 2 3 4 5 6 CORE PRIMARYCOREI PRIMARYCOREII PRIMARYCOREIII PRIMARYCOREIV PRIMARYCOREV PRIMARYEARTH RPhase(M) PHASE YPhase(M) BPhase(M)

3.0 INSULATIONRESISTANCEMEASUREMENT:(Using500VMegger) SlNo.ofMegger: Make: Calibrationvalidupto:_____/______/______ Ambienttemperature:_______0C a) SL No 1 2 3 4 5 6 b) SL No CORE RPhase(M) Page46of72 PHASE YPhase(M) BPhase(M) CORE COREIEarth COREIIEarth COREIIIEarth COREIVEarth COREVEarth EARTHEarth RPhase(M) PHASE YPhase(M) BPhase(M)

1 2 3 4 5 6 7 8 9 10 4.0

COREICOREII COREICOREIII COREICOREIV COREICOREV COREIICOREIII COREIICOREIV COREIICOREV COREIIICOREIV COREIIICOREV COREIVCOREV

CHECKIRVALUEBETWEENTANDELTAPOINTANDEARTH(AT1KVINSECONDARYBOX) RPhase________M, YPhase_________M BPhase_________M

5.0

SECONDARYWINDINGRESISTANCE(INOHM) DetailsofTestingequipment: Make: Dateoftesting:______/_____/_____

Calibrationvalidupto:_____/______/______ Ambienttemperature:_______0C CORE TERMINAL RPHASE Factory COREI 1S11S2 1S11S3 1S11S4 COREII 2S12S2 2S12S3 2S12S4 COREIII 3S13S2 3S13S3 3S13S4 COREIV 4S14S2 4S14S3 4S14S4 COREV 5S15S2 5S15S3 Site YPHASE Factory Site BPHASE Factory Site

Page47of72

5S15S4 6.0 POLARITYTEST: (With1.5VDCSupply) Connect+VEatP1&VeatP2 CORE BETWEEN

PHASE RPhase YPhase BPhase

COREI

1S1(+Ve) 1S1(+Ve) 1S1(+Ve)

1S2(Ve) 1S3(Ve) 1S4(Ve) 2S2(Ve) 2S3(Ve) 2S4(Ve) 3S2(Ve) 3S3(Ve) 3S4(Ve) 4S2(Ve) 4S3(Ve) 4S4(Ve) 5S2(Ve) 5S3(Ve) 5S4(Ve)

COREII

2S1(+Ve) 2S1(+Ve) 2S1(+Ve)

COREIII

3S1(+Ve) 3S1(+Ve) 3S1(+Ve)

COREIV

4S1(+Ve) 4S1(+Ve) 4S1(+Ve)

COREV

5S1(+Ve) 5S1(+Ve) 5S1(+Ve)

7.0 TANDELTAANDCAPACITANCEMEASUREMENT SlNo.ofTestKit: Make: Calibrationvalidupto:_____/______/______ DateofTesting:______/______/______ Ambienttemperature:_______0C a) CAPACITANCEMEASRUEMENT VOLTAGE CAPACITANCE(MEASUREDVALUE) RPhase FACTORY SITE 2kV YPhase FACTORY SITE BPhase FACTORY SITE REMARKS

Page48of72

10kV b)

TANDELTAMEASUREMENT VOLTAGE TANDELTA(MEASUREDVALUE) RPhase FACTORY SITE 2kV 10kV YPhase FACTORY SITE BPhase FACTORY SITE REMARKS

8.0

CURRENTRATIOTEST SlNo.ofTestKit: Make: PrimaryCurrentRange: VABurden:

Calibrationvalidupto:_____/______/______ DateofTesting:______/______/______ Ambienttemperature:_______0C a) RPHASE CORE PRIMARYCURRENT % ACTUAL COREI 20% (1S11S2) 40% 80% COREII 20% (2S12S2) 40% 80% COREIII 20% (3S13S2) 40% 80% COREIV 20% (4S14S2) 40% 80% COREV 20% (5S15S2) 40% 80% COREI 20% (1S11S3) 40% 80% COREII 20% (2S12S3) 40% 80% COREIII 20% (3S13S3) 40% SECONDARY CURRENT

THERITICAL RATIO

ACTUAL RATIO

% OF ERROR

Page49of72

80% COREIV 20% (4S14S3) 40% 80% COREV 20% (5S15S3) 40% 80% COREI 20% (1S11S4) 40% 80% COREII 20% (2S12S4) 40% 80% COREIII 20% (3S13S4) 40% 80% COREIV 20% (4S14S4) 40% 80% COREV 20% (5S15S4) 40% 80% b) YPHASE CORE

PRIMARYCURRENT % ACTUAL COREI 20% (1S11S2) 40% 80% COREII 20% (2S12S2) 40% 80% COREIII 20% (3S13S2) 40% 80% COREIV 20% (4S14S2) 40% 80% COREV 20% (5S15S2) 40% 80% COREI 20% (1S11S3) 40% 80% COREII 20% (2S12S3) 40% 80% COREIII 20% (3S13S3) 40%

SECONDARY CURRENT

THERITICAL RATIO

ACTUAL RATIO

% OF ERROR

Page50of72

80% COREIV 20% (4S14S3) 40% 80% COREV 20% (5S15S3) 40% 80% COREI 20% (1S11S4) 40% 80% COREII 20% (2S12S4) 40% 80% COREIII 20% (3S13S4) 40% 80% COREIV 20% (4S14S4) 40% 80% COREV 20% (5S15S4) 40% 80% c) BPHASE CORE

PRIMARYCURRENT % ACTUAL COREI 20% (1S11S2) 40% 80% COREII 20% (2S12S2) 40% 80% COREIII 20% (3S13S2) 40% 80% COREIV 20% (4S14S2) 40% 80% COREV 20% (5S15S2) 40% 80% COREI 20% (1S11S3) 40% 80% COREII 20% (2S12S3) 40% 80% COREIII 20% (3S13S3) 40%

SECONDARY CURRENT

THERITICAL RATIO

ACTUAL RATIO

% OF ERROR

Page51of72

80% COREIV 20% (4S14S3) 40% 80% COREV 20% (5S15S3) 40% 80% COREI 20% (1S11S4) 40% 80% COREII 20% (2S12S4) 40% 80% COREIII 20% (3S13S4) 40% 80% COREIV 20% (4S14S4) 40% 80% COREV 20% (5S15S4) 40% 80% 9.0

MAGNETISINGCURVESPERFORMANCE KNEEPOINTVOLTAGE(KVp)_______________VOLT SlNo.ofTestKit: Make: Calibrationvalidupto:_____/______/______ DateofTesting:______/______/______ Ambienttemperature:_______0C a) RPHASE VOLTAGE To be Actual applied Value 0.25xKVP 0.5xKVP 0.75xKVP 1.00xKVP 1.10xKVP b) YPHASE VOLTAGE To be Actual applied Value 0.25xKVP CURRENTMEASUREMENT(mA) COREI COREII COREIII COREIV 1S11S2 2S12S2 3S13S2 4S14S2 Not to Page52of72 COREV 5S15S2 CURRENTMEASUREMENT(mA) COREI COREII COREIII COREIV 1S11S2 2S12S2 3S13S2 4S14S2 Not to apply for Metering Core COREV 5S15S2

0.5xKVP 0.75xKVP 1.00xKVP 1.10xKVP c) BPHASE

apply for Metering Core

VOLTAGE To be Actual applied Value 0.25xKVP 0.5xKVP 0.75xKVP 1.00xKVP 1.10xKVP NOTE:

CURRENTMEASUREMENT(mA) COREI COREII COREIII COREIV 1S11S2 2S12S2 3S13S2 4S14S2 Not to apply for Metering Core

COREV 5S15S2

1.0CTshouldnotsaturateat110%ofkneepointvoltage(KVp) 2.0 If knee point voltage is not mentioned then knee point current may be taken into consideration 10.0 CONTACTRESISTANCEMEASUREMENT DetailsofTestKit: CONTACTRESISTANCE AcrossterminalP1 AcrossterminalP2 NOTE : The value of contact resistance should not be more than 10 PER JOINT / CONNECTOR. 11.0 DGATESTOFCTOIL(AFTERONEMONTHOFCOMMISSIONING) (Sampletobetakenat250mlbottle) DISOLVEGAS TotalGas% H2 CH4 C2H4 C2H6 C2H2 CO CO2 O2 N2 RPHASE YPHASE BPHASE REMARKS RPhase() YPhase() BPhase()

Page53of72

12.0 FINALDOCUMENTATIONREVIEW: a) Finaldocumentofprecommissioningchecks ReviewedandApproved: Documentsregardingspares,equipment,O&M Manualsetc.availableatsiteforo&mpurpose: Aftermodification,ifany,"asbuiltdrawings" areavailableatsite: YES/NO

b)

YES/NO

c)

YES/NO

Signature: Name: Designation: (SupplierRep)

Signature: Name: Designation: ErectionAgency:

Signature: Name: Designation: SiteI/C,AEGCL

Signature Name: Designation: T&C,AEGCL

Page54of72

ASSAMELECTRICITYGRIDCORPORATIONLIMITED
PRECOMMISSIONINGOFCAPACITORVOLTAGETRANSFORMER
COMMISSIONINGFORMATS DOCNO: 132 SUBSTATION:

BAYNAME/NO: DATEOFERECTION: Voltagelevel,kV

DATEOFENERZIZATION: 220 400

DETAILSOFEQUIPMENT: DESCRIPTION PURCHASEORDERNO MAKE TYPE SERIALNO CAPACITANCE(pF) SECONDARYDETAILS: DESCRIPTION VOLTAGE(V) VABURDEN(VA) CLASS PURPOSE 1.0 SL No i). ii). iii). iv). v). vi). vii). DETAILSOFCHECKLIST: DESCRIPTION WINDINGI WINDINGII WINDINGIII RPHASE YPHASE BPHASE

STATUS YES NO

Equipmentiscleanedandfreefrom Dust/Dirtforeignmaterialsetc. Equipmentisfreefromallvisible defectsonphysicalinspection CheckCVTtankhasbeenprovided Withdoubleearthing CheckthatCVTMarshallingBoxisearthed Allnutsandboltsaretightened correctlyasperspecifiedtorque Checktightnessofterminalconnector AllfittingsasperOutline GeneralArrangementdrawing.

REMARKS RECORD DEFICENCIES, IFANY

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viii).

Levelling and Identification marking is carriedout. ix). Levellingandalignmentofstructure andbaseframeischecked x). Erectioncompletioncertificatealong withlistofoutstandingactivities Reviewed xi). Anypaintremoved/scratchedin transithasbeentouchedup xii). Sl.NoofHVCAPACITORidenticaltothe Sl.nomentionedonRATING&DIG.PLATE xiii). Ensure brass vent plug between stacks of CVT'sisremoved xiv). Checktheoillevelandleakage throughanyjoints/Sec.Terminals xv). Checkoildrainvalveisproperly Closedandlocked. xvi). OilLevelontankGaugeGlass xvii). BDVofoilsampletakenfromtank bottomdrainvalve xviii). Checksecondarycableendboxis properlyfixedandensurecableentry atthebottomandunusedholessealed xix). EnsureH.Fterminalofunusedphases hasbeenearthedandnoloadon H.Fterminalbushing xx). CheckRATING/HEALTHINESSofFuses atCVTM.BandCVTterminalbox. xxi). Checkthattheneutralpointisearthed xxii). Ensureinterpolecablingiscompleted andcheckthecontinuity xxiii). ChecktheIRvalueofsecondarycable xxiv). Check external cabling from junction box to relay/controlpanelcompleted xxv). All the cable identification tags provided and all cores are provided with identification ferrulesatM.B. 2.0

3.0

CONTINUITYOFWINDING: (AfterremovingEarthLink1,2&3) SlNo BETWEENTERMINAL OK NOTOK A 1a1n B 2a2n C 3a3n INSULATIONRESISTANCEMEASUREMENT:(Using5kVMegger) DetailsofMegger: Page56of72

SLNo:

Type:

Make:

AmbientTemperature:__________0C SlNo BETWEEN RPhase MEASUREDVALUE(M) YPhase BPhase

4.0

i) PrimarySecondaryCORE1 ii) PrimarySecondaryCORE2 iii) PrimarySecondaryCORE3 iv) PrimaryEarth INSULATIONRESISTANCEMEASUREMENT:(Using500VMegger) DetailsofMegger: SlNo BETWEEN i) SecondaryCORE1Earth ii) SecondaryCORE2Earth iii) SecondaryCORE3Earth iv) CORE1CORE2 v) CORE1CORE3 vi) CORE2CORE3 VOLTAGERATIOTEST: DetailsofTestingInstruments: PHASE PRIMARY R Y B SECONDARYVOLTAGE Between Value 1a1n 2a2n 3a3n 1a1n 2a2n 3a3n 1a1n 2a2n 3a3n THEORITICAL RATIO

MEASUREDVALUE(M) RPhase YPhase BPhase

5.0

ACTUALRATIO FACTORY SITE

% ERROR

6.0

NOTE: 1.Applyvoltageoftheorderof500Vormoreacrosslinecapacitor(topflange)toearthlink 2.Ensureallearthlinksconnected TANDELTAANDCAPACITANCEMEASUREMENT SlNo.ofTestKit: Make: Page57of72

SerialNo: Calibrationvalidupto:_____/______/______ DateofTesting:______/______/______ Ambienttemperature:_______0C a) CAPACITANCEMEASRUEMENT VOLTAGE CAPACITANCE(MEASUREDVALUE) RPhase FACTORY SITE 2kV 10kV a) TANDELTAMEASUREMENT VOLTAGE TANDELTA(MEASUREDVALUE) RPhase FACTORY SITE 2kV 10kV 7.0 FINALDOCUMENTATIONREVIEW: d) Finaldocumentofprecommissioningchecks ReviewedandApproved: Documentsregardingspares,equipment,O&M Manualsetc.availableatsiteforo&mpurpose: Aftermodification,ifany,"asbuiltdrawings" areavailableatsite: YPhase FACTORY SITE BPhase FACTORY SITE REMARKS YPhase FACTORY SITE BPhase FACTORY SITE REMARKS

YES/NO

e)

YES/NO

f)

YES/NO

Signature: Name: Designation: (SupplierRep)

Signature: Name: Designation: ErectionAgency:

Signature: Name: Designation: SiteI/C,AEGCL

Signature Name: Designation: T&C,AEGCL

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ASSAMELECTRICITYGRIDCORPORATIONLIMITED
PRECOMMISSIONINGOFSURGEARRESTER
COMMISSIONINGFORMATS DOCNO: 33 132 SUBSTATION:

BAYNAME/NO: DATEOFERECTION: Voltagelevel,kV

DATEOFENERZIZATION: 220 400

DETAILSOFEQUIPMENT: DESCRIPTION PURCHASEORDERNO MAKE TYPE SERIALNO RATING 1.0 SL No i). ii). iii). iv). v). RPHASE YPHASE BPHASE

DETAILS:CHECKLIST/TESTING DESCRIPTION STATUS YES NO REMARKS RECORD DEFICENCIES, IFANY

vi). vii). viii). ix). x).

Equipmentiscleanedandfreefrom Dust/Dirtforeignmaterialsetc. Equipmentisfreefromallvisible defectsonphysicalinspection Support structures have been provided with doubleearth Allnutsandboltsaretightened correctlyasperspecifiedtorque Equipment erection is complete in all respect (ATTACHREMAININGACTIVITIES,IFANY) Levelling and Identification marking is carriedout. Levellingandalignmentofstructure andbaseframeischecked All insulators & Surge counter are free from anyphysicaldefects Check tightness of all nuts & bolts and terminalconnector Erection completion certificate along with listofoutstandingactivities

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xi).

xii).

xiii).

xiv). xv). xvi). 2.0

reviewed Checkoneendofsurgecounterisconnected to the bottom of la stack and one end of surgecounterhasbeenearth Thedirectionoftheexhaustventports away from the protected equipment and other arresterpoles Clearance from the arrester to earthed objects and from the arrester pole to another arrester pole maintained as per Outline drawing and all erection has been doneasperapproveddrawing. Check the serial no. and sequence of LA partsforerectioninmultistackLA CheckthealignmentofCoronaRing Check on charging, the Surge Counter pointerisingreenzone

INSULATIONRESISTANCEMEASUREMENT:(Using5kVMegger) SlNo.ofTestKit: Make: Calibrationvalidupto:_____/______/______ DateofTesting:______/______/______ Ambienttemperature:_______0C SlNo a b c d e f

BETWEEN 1 StackEarth 2ndStackEarth 3rdStackEarth 4thStackEarth 5thStackEarth 6thStackEarth RPhase(M)

PHASE YPhase(M)

BPhase(M)

3.0

SURGECOUNTERREADING: SlNo a b c READING CounterSerialNo. CounterMake CounterReading RPhase PHASE YPhase

BPhase

4.0

CAPACITANCE&TANDELTAMEASUREMENT: Page60of72

SlNo.ofTestKit: Make: Calibrationvalidupto:_____/______/______ DateofTesting:______/______/______ Ambienttemperature:_______0C VOLTAGE 2kV STACK TOP MIDDLE1 MIDDLE2 BOTTOM TOP MIDDLE1 MIDDLE2 BOTTOM CAPACITANCE TANDELTA REMARKS

10kV

5.0 6.0 CHECKINGOFHEALTHINESSOFSURGEMONITOR: FINALDOCUMENTATIONREVIEW: g) Finaldocumentofprecommissioningchecks ReviewedandApproved: Documentsregardingspares,equipment,O&M Manualsetc.availableatsiteforo&mpurpose: Aftermodification,ifany,"asbuiltdrawings" areavailableatsite: OK/NOTOK

YES/NO

h)

YES/NO

i)

YES/NO

Signature: Name: Designation: (SupplierRep)

Signature: Name: Designation: ErectionAgency:

Signature: Name: Designation: SiteI/C,AEGCL

Signature Name: Designation: T&C,AEGCL

Page61of72

ASSAMELECTRICITYGRIDCORPORATIONLIMITED
PRECOMMISSIONINGOF220kVLINERELAY&CONTROLPANEL
COMMISSIONINGFORMATS DOCNO: 33 132 SUBSTATION:

BAYNAME/NO: DATEOFERECTION: Voltagelevel,kV

DATEOFENERZIZATION: 220 400

DETAILSOFEQUIPMENT: Make: YearofManufacture:

PurchaseOrderNo: TypeofPanel:SwingSimplex/Simplex/Duplex PanelOverallDimensions: RelaySpecificationsDetails: Sl No RelayType Make Relay Ordering Code Relay Compatibility IEC 61850 Type&Nos.of No.of Communication Analogue Channel Ports Modbus RJ45 Serial Nos.of BI&BO BI BO DCAuxiliaryVoltage:

1 2 3 1.0

Main1 Main2 Line Differential

DETAILS:CHECKLIST/TESTING a. Wiring

Sl No 1 2 3 4 5

As per norms Wiring done using PVC insulated 650 grade singlecore multi strands annealed copper conductor flexible wire. 2.5 Sqmm Red, Yellow, Blue & Black for CT Circuit 2.5 Sqmm Red, Yellow, Blue & Black for PT Circuit 2.5 Sqmm for 240V AC circuits 1.5 Sqmm Grey for DC circuits
Page62of72

Yes

No

Remarks

6 7

1.5 Sqmm Black for AC circuits 2.5 Sqmm Green for Earthing Circuit

b. Sl No 1 2 3

EARTHING: As per norms 1 no. Copper Bar of size 25 x 6 mm will be run throughout the board Earthing between equipments will be looped & finally terminated in Earth bar Earth bar coupling link of copper will be provided between adjacent panels Yes No Remarks

c. Sl No 1 2 d.

AC DISTRIBUTION: As per norms Checking of AC Supervision Relay Yes No Remarks

DC DISTRIBUTION

Sl No 1 2 3 4

As per norms Checking of DC Supervision Relay Source-1 Source-2 Changeover between Sources a) Electro Mechanical switch b) Through changeover relays e. VOLTAGE SELECTION RELAYS As per norms 75 A 75 B Check VTSS (BPT-LPT)

Yes

No

Remarks

Sl No 1 2 3

Yes

No

Remarks

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f. Sl No 1 2 3 4 5 g. Sl No 1 2

METERING CIRCUIT As per norms W Meter VAR Meter V Meter A Meter TVM Meter SYNCHRONISING CIRCUIT As per norms Bus PT Supply Circuit Line CVT Supply Circuit Yes No Remarks Yes No Remarks

h. Sl No 1

CT CIRCUIT As per norms Metering Circuit Star Point Continuity Earthing should be either at CT JB or at Panel end Main Protection Circuit Star Point Continuity Earthing should be either at CT JB or at Panel end B/U Protection Circuit Star Point Continuity Earthing should be either at CT JB or at Panel end BBP Protection Circuit Star Point Continuity Earthing should be either at CT JB or at Panel end Yes No Remarks

i.

Input Circuit

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Sl No 1 2 3 4 5

As per norms Main/TBC CB R phase Open Main/TBC CB Y phase Open Main/TBC CB B phase Open Main/TBC CB Ready for A/R Carrier Out of Service

Yes

No

Remarks

Sl No 6

As per norms External LBB/ A/R Initiation R phase Y phase B phase A/R Switch ON Carrier Channel I Healthy Carrier Channel II Healthy Carrier Channel I Received SOTF Initiation A/R Block Main CB Open Status R phase Y phase B phase TBC CB Open Status R phase Y phase B phase Main CB Ready for A/R TBC CB Ready for A/R j. Carrier circuit As per norms Carrier Channel I Received Carrier Channel I Healthy Carrier Channel I Send Carrier Channel II Send Carrier Channel II Received Carrier Channel II Healthy Carrier Channel I Send Carrier Channel II Send Direct Trip Received Channel I
Page65of72

Yes

No

Remarks

7 8 9 10 11 12

13

14 15

Sl No 1 2 3 4 5 6 7

Yes

No

Remarks

8 9 10 k. Sl No 1 2 3

Channel II Direct Trip Send Channel I Channel II

Single Phase/ Three Phase Initiation Circuit As per norms 1 Trip R- : 86 R1 1 Trip Y- : 86 Y1 1 Trip B- : 86 B1 1 Trip R- : 86 R2 1 Trip Y- : 86 Y2 1 Trip B- : 86 B2 Master Trip Relay : 86 A Optd Distance Prot Optd. B/U Protection Optd. DT Received Ch-I DT Received Ch-II Master Trip Relay : 86 B Optd Distance Prot Optd. B/U Protection Optd. DT Received Ch-I DT Received Ch-II Auxiliary Trip Relay: 86 X (RL-1) Optd. Auxiliary Trip Relay: 86 X (RL-2) Optd. Yes No Remarks

l. Sl No 1 2

LBB Trip Relay Circuit As per norms LBB -96 Realy Optd. Check all the Trip Extensions as per scheme i) ii) iii) iv) v) vi)
Page66of72

Yes

No

Remarks

vii)

m. Sl No 1 2 3

CB Closing & Manual Trip Circuit Yes No Remarks

As per norms DC Supply-1 to CB DC Supply-2 to CB Auto Reclose/ Remote Close Manual Trip-1 (TC-1)/ (TC-2)

n.

CB TC-1 / TC 2 Circuit (Protection Trip/Post Close Supn) & Pre Close Supervision

Sl No 1 2

As per norms 1- Optd. From Main Prot. Relay Group A Trip Optd. Group B Trip Optd.

Yes

No

Remarks

LBB/ BB Optd.

195 R 195 Y 195 B

o.

TTX Contact Multiplication Circuit (Related to TTS)

Sl No 1

As per norms TTX 1 TTX 2 TTX3

Yes

No

Remarks

2 p. Sl No 1 TBC TRIPPING CIRCUIT As per norms 86 A Extension 86 B extension 1- Trip Optd. From Main Protection Relay R Y B 2 To LBB Initiation TBC 86 R1 86 Y1 86 B1 86 R2 86 Y2 86 B2

Yes

No

Remarks

q.

ISOLATOR CONTROL CIRCUIT

Sl No 1

As per norms 89 A Close

Yes

No

Remarks

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89 A Open 89 B Close 89 B Open 89 C Close 89 C Open 89 D Close 89 D Open r. Sl No 1 INDICATION CIRCUIT As per norms CB Open CB Close CB Auto Trip CB Spring Charged 89 A Open 89 B Close 89 B Open 89 BE Close 89 BE Open 89 C Close 89 C Open 89 D Close 89 D Open 89 DE1 Close 89 DE1 Open 89 DE2 Close 89 DE2 Open Line Hot R- Healthy Line Hot Y- Healthy Line Hot B- Healthy

Yes

No

Remarks

s. Sl No 1 2 3 4 5

ANNUNCIATION CIRCUIT As per norms DC Fail AC Fail Main Dist Prot. Optd. O/C & E/F Optd. DEF/ SOTF Optd.
Page69of72

Yes

No

Remarks

6 7 8 9 10 11 12 13 14 15 16 t.

Carrier CH-I & II Fail A/R Optd. Power Swing Detected Panel AC Supply Fail LBB/BB Optd. Numerical Relay Faulty DT Received Ch-I & II CB TC-1 faulty CB TC-2 faulty SF6 Low Alarm SF6 Lock Out Main Distance Protection Relay

Sl No 1 2 3

As per norms Check CT Circuit (If any Mismatch) Check PT Circuit (If any Mismatch) Zone Reach Test

Yes

No

Remarks

4 5 6 7

LBB SOTF Optd. Carrier Send A/R i) AR Optd

ii) iii) 8 9 10 11

AR Lock Out AR Blocked

Power Swing Detected Carrier Inter-tripping VT Fuse fail Broken Conductor

u.

Main Distance Protection Relay & Directional B/U Relay

Sl No 12 13 14 15 16 17

As per norms Under Frequency Optd. Over Voltage Optd. Directional B/U Relay Check CT Circuit (If any Mismatch) Check PT Circuit (If any Mismatch) Directionality Test i) Operating Zone ii) Non Operating Zone

Yes

No

Remarks

18 19

Pick Up Test Operating Timing Check

Page71of72

20

High Set

v. Sl No 1 2 3 4 5 6 7

ISOLATOR INTERLOCK CIRCUIT As per norms 89 A Interlock 89 B Interlock 89 BE Interlock 89 DE1 Interlock 89 DE2 Interlock 89 D Interlock 89 C Interlock Yes No Remarks

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