protocol for 33by11kv ss
TRANSCRIPT
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COMMISSIONING PROTOCOLS
FOR
33/11KV SUB STATION
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INDEX
Sl
No
Equipment Format no
1 POWER & STATION TRANSFORMER
2 CIRCUIT BREAKER
3 CURRENT TRANSFORMER
4 VOLTAGE TRANSFORMER
5 LIGHTENING ARRESTER
6 ISOLATOR
7 BATTERIEY & CHARGER
8 EARTH RESISTANCE MEASUREMENT
9 STABILITY CHECK
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PRECOMMISSIONING CHECK LIST/SITE TEST REPORT
Doc. No.
Equipment
POWER TRANSFORMER /STATION TRANSFORMER
Sr. No. Date Rev.Nil
Location & Designation Drawing No. Sheet1 of 6
Customer Project Job order No.
Tested by(name) Witnessed by(name)
Signature
Date
Signature
Date
A. Name Plate details:
a) Make:
b) Rated KVA:_________
c) No load Voltage: Primary Volts l Secondary Volts
d) Rated Current Primary : Amps , Secondary Amps
e) Taps : _______ % to _______% in steps of _______ %
f) Vector group:
g) Losses : a) No load . _______ watts, Full load __________ watts
h) Oil : In Kgs _________ , In Ltrs.___________
i) Total Weight________ Kg
B. GENERAL CHECKS
1. Ensure that all electrical work of the transformer and associated equipmentare complete in all respects.
2. Check that no part of transformer and associated equipment is damaged.
3. Ensure that oil drainage system is complete.
4. Check that all external fittings are as per the external arrangement drawings
5. Examine the transformer for oil leaks from all gasket joints, valves etc.
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PRECOMMISSIONING CHECK LIST/SITE TEST REPORT
Doc. No.
Equipment
POWER TRANSFORMER /STATION TRANSFORMER
Sr. No. Date Rev.Nil
Location & Designation Drawing No. Sheet2 of 6
Customer Project Job order No.
Tested by(name) Witnessed by(name)
Signature
Date
Signature
Date
6. Check that air has been released from all points of the oil circuit
7. Check bushings are not damaged and clean in all respects.
8. Check buchholz relay is mounted with arrow pointing towards conservator
9. Check that all the cables in Marshalling & Control Cubicle box are correctly glanded and
terminated and check wiring is as per the relevant drawings.
10. Check that all the spare cable holes are sealed with rubber groumets.
11. Check that IR and continuity of all control & power cables.
12. Ensure that the following points are effectively earthed to the station earth
a. Main tank (2 points) b. Marshalling box. c. Control cubicle.
13. Check Silica gel breather is correctly installed and Silica gel colour is blue
14. Check tap changer operation manually over its entire range and confirm mechanical
position indication is correct
15. Check pressure relief diaphragm is undamaged and equalizing pipe mounting is
satisfactory where ever provided.
16. Check that the transformer neutral earthing and body earthing is done at two different
earth pits
17. Calibrate WTI & OTI gauge by using oil bath(both heating and cooling cycle)
18. Check WTI & OTI alarm circuit in the remote panel
19. Check WTI & OTI trip circuit in the upstream side breaker
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PRECOMMISSIONING CHECK LIST/SITE TEST REPORT
Doc. No.
Equipment
POWER TRANSFORMER /STATION TRANSFORMER
Sr. No. Date Rev.Nil
Location & Designation Drawing No. Sheet3 of 6
Customer Project Job order No.
Tested by(name) Witnessed by(name)
Signature
Date
Signature
Date
20. Check the buchholz relay alarm and trip circuit either by actuating the test lever (if
provided in the relay) or by oil drainage method.
21. Check the buchholz relay alarm and trip circuit logic by externally shorting the alarm and
trip contacts in the buchholz relay TB, one after another
C. SITE TESTS
1-OIL TEST
2-INSULATION RESISTANCE TEST With transformer disconnected from HV & LV carry out IR test on the following sides and
equipment completely isolated
Date Sampling PointElectric Strength(BDV) OIL TEMP Moisture (ppm)
HV to Earth IR15_______Mohms IR60_______Mohms PI =
LV to Earth IR15______Mohms
HV to LV IR15________Mohms IR60_______Mohms PI =
Megger Used : _____________kV Make ___________________
Ambient Temp________deg C
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PRECOMMISSIONING CHECK LIST/SITE TEST REPORT
Doc. No.
Equipment
POWER TRANSFORMER /STATION TRANSFORMER
Sr. No. Date Rev.Nil
Location & Designation Drawing No. Sheet4 of 6
Customer Project Job order No.
Tested by(name) Witnessed by(name)
Signature
Date
Signature
Date
3-RATIO AND MAGNETIZING CURRENT TEST
Carry out the ratio and magnetizing current test by connecting a 3-phase 4 - wire low voltagesupply to HV terminals with normal Earth connection of the star point disconnected.
Measure the voltages at HV and LV side for all tap positions. At the same time measure the
HV magnetizing current at the minimum, normal and max tap positions RATIO TEST
MAGNETIZING CURRENT TEST
Voltage in VoltsTap
no.
R-Y Y-B B-R r-y y-b b-r r-n y-n b-n
1
2
3
5
6
7
8
Voltage in Volts Current in Amp
Tap
no.
R-Y Y-B B-R R Y B
1
2
3
5
6
7
8
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PRECOMMISSIONING CHECK LIST/SITE TEST REPORT
Doc. No.
Equipment
POWER TRANSFORMER /STATION TRANSFORMER
Sr. No. Date Rev.Nil
Location & Designation Drawing No. Sheet5 of 6
Customer Project Job order No.
Tested by(name) Witnessed by(name)
Signature
Date
Signature
Date
4-MAGNETIC BALANCE TEST Apply single phase low voltage supply in one phase of HV side and record voltages inothers.
From above test check that the magnetic balance of the core is OK / not OK
5-VECTOR GROUP TEST A 415 V, 3 phase supply connected to HV terminals with normal earth connections of star
point disconnected and R-r connected together ( at nominal tap position )
Voltage
Applied
Volts
Y-BR- Y
B-R
B-RY- B
R-Y
R-YB- R
Y-B
Volts Volts Volts
R-Y r-n Rn
Y-B y-n Yn
B-R b-n Bn
R-r Y-r B-r
R-y Y-y B-y
R-b Y-b B-b
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PRECOMMISSIONING CHECK LIST/SITE TEST REPORT
Doc. No.
Equipment
POWER TRANSFORMER /STATION TRANSFORMER
Sr. No. Date Rev.Nil
Location & Designation Drawing No. Sheet6 of 6
Customer Project Job order No.
Tested by(name) Witnessed by(name)
Signature
Date
Signature
Date
Check for desired vector group - OK or not OK.
6. SHORT CIRCUIT TEST Short LV terminals and apply a regulated 3 -phase, A.C. supply from a 3 -phase variac (fed with 3 -phase, 415 V A.C. supply) to HV winding.
Volts Amps
Tap no RY YB BR R Y B138
Z = Vsc / Isc ; % Z = (Z x (MVA)base ) x 100 / (kV)base2
7. DC RESISTANCE TEST
Resistance in mili Ohms
TapNo. RY YB BR rn yn bn
12345678
Remarks:
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PRECOMMISSIONING CHECK LIST/SITE TEST REPORT
Doc. No.
Equipment
Outdoor/Indoor CircuitBreaker
Sr. No. Date Rev.Nil
Location & Designation Drawing No. Sheet1 of 4
Customer Project Job order No.
Tested by(name) Witnessed by(name)
Signature
Date
Signature
Date
1
A. Name Plate details:
a) Make:
b) Type:
c) Rated Volts:
d) Rated Current:
e) Rupturing Capacity: Sym. _______ KA Asym. __________ KA
B. GENERAL CHECKS
1. Check the erection of CB and its accessories are completed
2. No physical damages are there in any part of CB assembly
3. Check the earth connections are complete as per drawing
4. Check all NO/NC contacts of Aux. Switch unit of breaker:
5. Check for control panel
a) Fuses/MCBS provided are of rating as shown in the approved drawing
b) Check that the labeling of devices is as per the approved drawing
c) Check the wiring is completed as per the approved drawing
d) External Cabling and termination are completed as per the cable schedule
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PRECOMMISSIONING CHECK LIST/SITE TEST REPORT
Doc. No.
Equipment
Outdoor/Indoor CircuitBreaker
Sr. No. Date Rev.Nil
Location & Designation Drawing No. Sheet2 of 4
Customer Project Job order No.
Tested by(name) Witnessed by(name)
Signature
Date
Signature
Date
2
b) Check the terminal connections are tightened properly
c) Cable tags, ferrules for cores are provided as per cable schedule
d) Dressing and clamping of cables is done properly
e) Insulation resistance of all control cables OK (250/500v megger)
f) Check Functioning of relays/selector switches/contactors etc.
6. All insulators are cleaned and free from dust/dirt etc.
7. Check Clearances for following (mm):
a) Phase to Phase (between individual pole units)
R-Y ____ , Y-B ____, B-R_____
b) Phase to Earth. R-E ____ , Y-E ____, B-E_____
C. SITE TESTS
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PRECOMMISSIONING CHECK LIST/SITE TEST REPORT
Doc. No.
Equipment
Outdoor/Indoor CircuitBreaker
Sr. No. Date Rev.Nil
Location & Designation Drawing No. Sheet3 of 4
Customer Project Job order No.
Tested by(name) Witnessed by(name)
Signature
Date
Signature
Date
3
1. Insulation resistance test: (values in Mega Ohms, 5kv megger)
Status Megger Used Rph Yph BphPole to Earth ( CB Closed)Across Poles (CB Open)Between poles(CB closed)
Across poles (CB closed)
2. Resistance measurements :(Ohms) Temp.:
Trip Coil I Trip Coil II Close Coil
3. Operating time: (in milli seconds)
R Y B RYB inseries
RYB inparallel
ClosingTripping
4. Contact Resistance Test: (in micro ohms) Temp.:
R ph Y ph B ph
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PRECOMMISSIONING CHECK LIST/SITE TEST REPORT
Doc. No.
Equipment
Outdoor/Indoor CircuitBreaker
Sr. No. Date Rev.Nil
Location & Designation Drawing No. Sheet4 of 4
Customer Project Job order No.
Tested by(name) Witnessed by(name)
Signature
Date
Signature
Date
4
D. OPERATION CHECK
1. Check the operation of CB for following:
a) Closing & tripping through CB Control switch in Local/Remote mode
b) Tripping through emergency trip
c) Indications
d) Check Anti pumping feature of CB
2. Chek manual charging operation of spring.
3. Check the operation with castle lock in service
4. Check for proper operation of breqaker sounter
5. Check the operation of space heater and cubicle lamp
Remarks:
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PRECOMMISSIONING CHECK LIST/ SITETEST REPORT
Doc. No.
Equipment
Outdoor/Indoor CurrentTransformer
Sr. No. Date Rev.Nil
Location & Designation Drawing No. Sheet1 of 6
Customer Project Job order No.
Tested by(name) Witnessed by(name)
Signature
Date
Signature
Date
[ BAY # ]A. NAME PLATE DETAILS
TYPE MAKE -
‘R’ Ph SL.NO. :- ‘Y’ Ph SL.NO. :- ‘B’ Ph SL.NO. :-
Rated Dynamic Current :- NO. OF CORES :-
Rated System Voltage :- Type of Insulation :-
Rated Primary Normal Current :- Rated Continuous Thermal Current :-
Rated Short Time Thermal Current :- Total Creepage Min :-
Rated Insulation Levels :- Rated Frequency :-
Rated Extended Primary Current :- Rated Thermal Current :- .
G. A. Drawing No. :- Weight Of Oil :- Total Weight :-
Whether Auxiliary C T / Reactor Provided for Metering Winding :- .
CORE DETAILS
Core
No.
Current Ratio(Amps)
Output
Burden
( VA )
Accu-
racyclas
s
ISF/
ALF
Min. KneePoint
Voltage(KVP) in
Volts
Max C T SecWdg. Res. ( Ω
)( Rct at 75
deg C )
Iexcitation
at KVP( m A )
1
2
3 - -
CAUTION
01. Secondary Terminals must be short circuited before the burden isdisconnected.02. Ensure C (Tan Delta) point connection with Earth.
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PRECOMMISSIONING CHECK LIST/ SITETEST REPORT
Doc. No.
Equipment
Outdoor/Indoor CurrentTransformer
Sr. No. Date Rev.Nil
Location & Designation Drawing No. Sheet2 of 6
Customer Project Job order No.
Tested by(name) Witnessed by(name)
Signature
Date
Signature
Date
B. SITE TESTS
A. I. R. VALUES :Instruments Used - Megger –
01. ‘R’ Ph C. T. SL.NO. :-
MEASUREDBETWEEN
IRVALUE( M.Ω )
MEASUREDBETWEEN
IR VALUE( M.Ω )
Primary – Earth Core 1 -Core 2
Primary + E -Core 1
Core 1 -Core 3
Primary + E -Core 2
Core 2 -Core 3
Primary + E -Core 3
Core 3 - EarthCore 1 –
EarthCore 2 – Earth
02. ‘Y’ Ph C. T. SL.NO.
MEASUREDBETWEEN
IRVALUE( M.Ω )
MEASUREDBETWEEN
IR VALUE( M.Ω )
Primary – Earth Core 1 -
Core 2Primary + E -
Core 1Core 1 -Core 3
Primary + E -Core 2
Core 2 -Core 3
Primary + E -Core 3
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PRECOMMISSIONING CHECK LIST/ SITETEST REPORT
Doc. No.
Equipment
Outdoor/Indoor CurrentTransformer
Sr. No. Date Rev.Nil
Location & Designation Drawing No. Sheet3 of 6
Customer Project Job order No.
Tested by(name) Witnessed by(name)
Signature
Date
Signature
Date
Core 3 - EarthCore 1 –
EarthCore 2 –
Earth
03. ‘B’ Ph C. T. SL.NO. :-
MEASUREDBETWEEN
IRVALUE( M.Ω )
MEASUREDBETWEEN
IR VALUE( M.Ω )
Primary – Earth Core 1 -Core 2
Primary + E -Core 1
Core 1 -Core 3
Primary + E -Core 2
Core 2 -Core 3
Primary + E -
Core 3
Core 3 - EarthCore 1 –
EarthCore 2 –
Earth
B. SECONDARY WINDING RESISTANCE:-
Instrument Used:.
01. ‘R’ Ph C. T. SL.NO. :-
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PRECOMMISSIONING CHECK LIST/ SITETEST REPORT
Doc. No.
Equipment
Outdoor/Indoor CurrentTransformer
Sr. No. Date Rev.Nil
Location & Designation Drawing No. Sheet4 of 6
Customer Project Job order No.
Tested by(name) Witnessed by(name)
Signature
Date
Signature
Date
CORE TERMINALS Resistance
1 S 1 - 1 S 21 S 1 - 1 S 3
2 S 1 - 2 S 22 S 1 - 2 S 33 S 1 - 3 S 23 S 1 - 3 S 3
02. ‘Y’ Ph C. T. SL.NO. :-
CORE TERMINALS Resistance
1 S 1 - 1 S 2
1 S 1 - 1 S 32 S 1 - 2 S 22 S 1 - 2 S 33 S 1 - 3 S 23 S 1 - 3 S 3
03. ‘B’ Ph C. T. SL.NO. :-
CORE TERMINALS Resistance
1 S 1 - 1 S 21 S 1 - 1 S 32 S 1 - 2 S 22 S 1 - 2 S 33 S 1 - 3 S 2
3 S 1 - 3 S 3
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PRECOMMISSIONING CHECK LIST/ SITETEST REPORT
Doc. No.
Equipment
Outdoor/Indoor CurrentTransformer
Sr. No. Date Rev.Nil
Location & Designation Drawing No. Sheet5 of 6
Customer Project Job order No.
Tested by(name) Witnessed by(name)
Signature
Date
Signature
Date
C. KNEE POINT VOLTAGE TEST:-
Instruments Used:
01. CORE – 1.
Measured Current in
mA
Measured Current in
mA
Core
Terminal
Applie
dVoltag
e ‘R’Ph
‘Y’Ph
‘B’Ph
Core
Terminal
Applie
dVoltag
e ‘R’Ph
‘Y’Ph
‘B’Ph
1S1-1S2
____ A
1S1-1S3
____ A
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PRECOMMISSIONING CHECK LIST/ SITETEST REPORT
Doc. No.
Equipment
Outdoor/Indoor CurrentTransformer
Sr. No. Date Rev.Nil
Location & Designation Drawing No. Sheet6 of 6
Customer Project Job order No.
Tested by(name) Witnessed by(name)
Signature
Date
Signature
Date
D. CURRENT RATIO:-
Instruments Used:-
C. T. ‘R’ ‘Y’ & ‘B’ PHASES
01. CORE – 1
MEASURED CURRENT IN SECONDARY (in m A)Injected Currentin Primary in(Amps)
‘R’ Phase C.T.
‘Y’ PhaseC.T.
‘B’ Phase C.T.
Actual Current
CoreNo. &Ratio
Actual
Ratio Sec Current Sec Current Sec Current 1
POLARITY TEST:-
Inst. Used :
01. ‘R’ Ph C. T. SL.NO. :-
CORE – 1 CORE – 2 CORE – 3
02. ‘Y’ Ph C. T. SL.NO. :-
CORE – 1 CORE – 2 CORE - 3
03. ‘B’ Ph C. T. SL.NO. :-
CORE – 1 CORE – 2 CORE – 3
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PRECOMMISSIONING CHECK LIST/ SITETEST REPORT
Doc. No.
Equipment
VOLTAGE TRANSFORMERSr. No. Date Rev.
Nil
Location & Designation Drawing No. Sheet1 of 1
Customer Project Job order No.
Tested by(name) Witnessed by(name)
Signature
Date
Signature
Date
A. NAME PLATE DETAILS & SPECIFICATIONS :-
TYPE :- MAKE :-
Sl. Nos OF PT ‘R’ Phase - ‘Y’ Phase - ‘B’ Phase -
Highest System Voltage :- NO. OF CORES :- 2
Type of Insulation :- CLASS
Rated Voltage :- KV
Total Thermal Burden :-. TOTAL CREEPAGE MIN :- mm
Nominal Intermediate Voltage :- KV Rated Frequency :- 50Hz
Rated Insulation Levels KVp Voltage Factor :-.
Weight :- Kg
CORE DETAILSCore Rated Secondary
Voltage ( Volts )Terminal Markings Rated Burden
( VA )Accuracy Class
Core - 1 110 / √ 3 1 a - 1 nCore - 2 110 / √ 3 2 a - 2 n
SIMULTANEOUS LOADING OF SECONDARIES
B. INSULATION RESISTANCE TEST
Instruments used:
‘R’ PHASE ‘Y’ PHASE ‘B’ PHASEHV-ELV1-ELV2-E
HF-ELV1-LV2HV-LV1HV-LV2
Voltage Ratio TestApplied Primary Voltage(V) Measured Secondary Voltage(V)R-E Y-E B-E r-E y-E b-E
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PRECOMMISSIONING CHECK LIST/ SITETEST REPORT
Doc. No.
Equipment
LIGHTENING ARRESTERSr. No. Date Rev.
Nil
Location & Designation Drawing No. Sheet1 of 2
Customer Project Job order No.
Tested by(name) Witnessed by(name)
Signature
Date
Signature
Date
[BAY# , ]
A. NAME PLATE DETAILS & SPECIFICATIONS:-
MAKE:
SERIAL NOS OF LA'S 'R' Phase 'Y' Phase 'B' Phase
Type:- Style:- Class & Type: - Gapless (Zn O Block), Station Class
Rated Voltage :- 30 kV Max Continuos Operating Volt. :- KV
Max Continuos Operating Volt. :- KV Rated Frequency :- 50 HZ
DISCHARGE COUNTER DETAILS (For 33KV):-
MAKE.
Year of Manufacturing :-
Previous Reading of the Counter atthe Time of Pre Commissioning.
‘R’ Phase - ‘Y’ Phase - ‘B’ Phase -
Counter Reading at the Time ofCommissioning.
'R' Phase - ‘Y’ Phase - 'B' Phase -
Counter Sl.no. 'R' Phase -'
Y’ Phase - 'B' Phase -
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PRECOMMISSIONING CHECK LIST/ SITETEST REPORT
Doc. No.
Equipment
LIGHTENING ARRESTERSr. No. Date Rev.
Nil
Location & Designation Drawing No. Sheet2 of 2
Customer Project Job order No.
Tested by(name) Witnessed by(name)
Signature
Date
Signature
Date
B. I. R. VALUES:-
Instrument Used: - HV Digital Insulation Tester - V, MAKE - , MODEL - , SL. NO. :- .
I. R. VALUE IN M.Ω I. R. VALUE MEASURED
BETWEENVOLTAGE
L. A. ‘R’PHASE
L. A. ‘Y’ L. A. ‘B’PHASE
GROUND TO STACK – 1(If applicable)
GROUND TO STACK – 2( If applicable)
COMPLETE LA
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Doc. No.
Equipment
ISOLATORSr. No. Date Rev.
Nil
Location & Designation Drawing No. Sheet
1 of 2
Customer Project Job order No.
Tested by(name) Witnessed by(name)
Signature
Date
Signature
Date
[BAY # , ISOLATOR NO. ]
A. NAME PLATE DETAILS & SPECIFICATIONS:-
SERIAL NUMBER ISOLATOR -EARTH SWITCH -
MAKE :-
Rated Voltage :- Type of Isolator :- HCB - Outdoor TypeType of Earth Switch :-
Number of Poles :- Three Control Voltage :- .
Rated Normal Current :- Motor Voltage :-Type of Drive :- Operating Mechanism of Isolator & Earth Switch :- Manual.Rated Insulation Level :- No. of Earth Switch :- Rated Frequency :- 50 HZ
Rated Short Time Withstand Current - Isolator & Earth Switch :- 25 KA ( RMS ) / for 1 sec.
B. I. R. VALUES OF ISOLATOR: -
(Instruments Used: - HT MEGGER - V, MAKE –)
ISOLATOR IN OPEN CONDITION:-
MEASURED BETWEEN ‘R’ PHASE ‘Y’ PHASE ‘B’ PHASE
Male side to Ground M.Ω M.Ω M.Ω Female side to Ground M.Ω M.Ω M.Ω
C.CONTACT RESISTANCE:-
(Instrument Used - )
a). ISOLATOR IN CLOSED CONDITION :-
‘R’ PHASE ‘Y’ PHASE ‘B’ PHASEMEASUREDBETWEEN
Current( Amps )
Contact Res.
( in μΩ )
Current( Amps )
Contact Res.
( in μ. Ω )
Current( Amps )
Contact Res.
( in μ. Ω )
Main contact ( Male &Female)
100 100 100
b). ISOLATOR IN OPEN CONDITION :-
‘R’ PHASE ‘Y’ PHASE ‘B’ PHASEMEASUREDBETWEEN
Current( Amps )
Contact Res.
( in μΩ )
Current( Amps )
Contact Res.
( in μ. Ω )
Current( Amps )
Contact Res.
( in μ. Ω )
Earth Contact 100 100 100
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PRECOMMISSIONING CHECK LIST/ SITETEST REPORT
Doc. No.
Equipment
ISOLATORSr. No. Date Rev.
Nil
Location & Designation Drawing No. Sheet
2 of 2
Customer Project Job order No.
Tested by(name) Witnessed by(name)
Signature
Date
Signature
Date
PRECOMMISSIONING CHECKS
1 Check for level and spacing of base frames.2 Check alignment and verticality of Support Structure.
3 Check alignment and horizontally of male & female blade.4 Check that coupling f has at least two bolts fitted.5 Ensured MOM boxes mounted on the correct side.6 Check for braided flexible copper connection between moving blade of
earth switches and base frame. (Only in case of Earth Switches).7 Check for contact alignment & free movement of Isolator/engagement
and disengagement of male / female contacts.8 Check for Isolator closing / opening operation manually.9 During manual operation, confirmed position of operating handle coincid-
es with the marked ”OPEN” & “CLOSE” position on the MOM boxes ofIsolator / earthing switch.
10 Check electrical clearance during operation.11 Check mechanical interlock between isolator and Earth Switch for correct
functioning.
12 Check for cleaning of all support insulators and application of contactgrease in Isolator & Earth Switch contacts before starting for site testing.
13 Check for earthing of Isolator Structure, Base Frame, MOM Boxes & LineEarthing Switch.
14 Rating Plate Details OK as per Single Line Diagram.15 Earthing of structure, Base frame & MOM boxes.
16 Rating of fuses in the MOM boxes check OK.17 Ensured plugging of all unused holes & other openings.18 Check local Operation.
.
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PRECOMMISSIONING CHECK LIST
Doc. No.
Equipment
Battery & Battery ChargerSr. No. Date Rev.
Nil
Location & Designation Drawing No. Sheet1 of 6
Customer Project Job order No.
Tested by(name) Witnessed by(name)
Signature
Date
Signature
Date
1. BATTERY:
a. Name Plate Details:
a) Make:
b) Type:
c) AH rating:
d) Rated voltage/ cell:
e) No. of cells in battery bank:
f) Rated voltage of battery bank:
g) Specific gravity:
b. General checks
1. The quantity, ratings, type and make of the devices are as per the BOM asgiven in approved drawings
2. No physical damages are there in any devices of the panels
3. The inter panel Earth bus connections & connection to the earthing grid aretightened properly
4. Fuses provided are of rating as shown in the approved drawing
5. Check that the labeling of devices is as per the approved drawing
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PRECOMMISSIONING CHECK LIST
Doc. No.
Equipment
Battery & Battery ChargerSr. No. Date Rev.
Nil
Location & Designation Drawing No. Sheet2 of 6
Customer Project Job order No.
Tested by(name) Witnessed by(name)
Signature
Date
Signature
Date
6. Check the wiring is completed as per the approved drawing
7. External Cabling and termination are completed as per the cable schedule
8. Cable tags, ferrules for cores are provided as per cable schedule
9. Dressing and clamping of cables is done properly
10. Check the phase sequence of the Mains supply to the battery charger
11. Check Functioning of all relays/meters/selector switches etc.
12. All Alarms & Annunciations, indications are functioning properly
13. Check the Float & Boost charger operation, set the o/p voltage (if reqd)
14. Check the current limiting feature of charger & set the current limit (if reqd.)
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PRECOMMISSIONING CHECK LIST
Doc. No.
Equipment
Battery & Battery ChargerSr. No. Date Rev.
Nil
Location & Designation Drawing No. Sheet3 of 6
Customer Project Job order No.
Tested by(name) Witnessed by(name)
Signature
Date
Signature
Date
c. Tests
I.Before Charging: Battery Voltage:
II.During Charging: Time:Charging current:Battery Voltage:
Cell No. Cell Voltage Specific gravity(whwereverapplicable)
Temperature
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PRECOMMISSIONING CHECK LIST
Doc. No.
Equipment
Battery & Battery ChargerSr. No. Date Rev.
Nil
Location & Designation Drawing No. Sheet4 of 6
Customer Project Job order No.
Tested by(name) Witnessed by(name)
Signature
Date
Signature
Date
III.Discharging: Time:Discharge current:Battery Voltage:
Cell No. Cell Voltage Specific gravity Temperature
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PRECOMMISSIONING CHECK LIST
Doc. No.
Equipment
Battery & Battery ChargerSr. No. Date Rev.
Nil
Location & Designation Drawing No. Sheet5 of 6
Customer Project Job order No.
Tested by(name) Witnessed by(name)
Signature
Date
Signature
Date
2.-BATTERY CHARGER:
a. Name Plate Details:a) Make:
b) Type:
c) Rated voltage:
d) Float Voltage
e) Float current:
f) Boost Voltage:
g) Boost current:
GENERAL CHECKS
1. The cabling from Battery Charger to first, last and tap cell is completed
2. The inter cell connections and cable connections are tightened properly
3. There is no physical damage to any cell and cell terminals
4. Check the cells are correctly numbered.
5. Check all the cells are connected in correct polarity
6. Check availability of accessories like apron, gloves, hydrometer,
cell voltage tester, thermometer etc.
7. Check the specific gravity of the electrolyte prior to pouring in thecells(wherever applicable)
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PRECOMMISSIONING CHECK LIST
Doc. No.
Equipment
Battery & Battery ChargerSr. No. Date Rev.
Nil
Location & Designation Drawing No. Sheet6 of 6
Customer Project Job order No.
Tested by(name) Witnessed by(name)
Signature
Date
Signature
Date
8. Check the polarity of the DC connection from Battery charger to Battery
9. Charging is carried out as per the instruction manual
i. Insulation resistance test: Temp.:
R-E Y-E B-E R-Y Y-B B-R
Insulation resistance(in Mega Ohms)
ii. Load Test:
Time Load Current
Remarks:
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PRECOMMISSIONING CHECK LIST/ SITETEST REPORT
Doc. No.
Equipment
EARTH RESISTANCE MEASUREMENTSr. No. Date Rev.
Nil
Location & Designation Drawing No. Sheet1 of 1
Customer Project Job order No.
Tested by(name) Witnessed by(name)
Signature
Date
Signature
Date
INSTRMENTS USED :- Earth Resistance Magger, MAKE :-
Sl.No
BAY Name EQUIPMENTS EARTHRESISTANCE
( in Ohms )
Remarks
1 __ Earth mat
NB: EARH RESITANCE TO BE TAKEN AT ALL T RANSFORMERS LA, VT, ISOLATORS,CB, TOWERS , ELECRODES.
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PRECOMMISSIONING CHECK LIST/ SITETEST REPORT
Doc. No.
Equipment
STABILITY TESTSr. No. Date Rev.
Nil
Location & Designation Drawing No. Sheet1 of 3
Customer Project Job order No.
Tested by(name) Witnessed by(name)
Signature
Date
Signature
Date
33/11 T/F # 1 Schematic P-2 P-1 → P-1 P-2
‘R'
→ ‘Y’
→
PRIMARY INJECTION FROM BAY # 1 C.T. AT P-1 TERMINALS & P-2 SHORTED.
Instruments Used MAKE MODEL SL. NO. REMARK
Clamp on Meter,MAKE
.
Primary InjectionKit, MAKE
SinglePhase variac,MAKE
.
[ 33 KV Transformer BAY # 1]
01. CORE – 1
PRIMARY CURRENT INJECTED IN‘R’ph -----------A, ‘Yph-------------A’, ‘B’ ph ------------ A
CURRENTMEASURED AT
‘R’ Ph. CT ‘Y’ Ph. CT ‘B’ Ph. CT NEUTRAL
1 C.T. M. B. T.B No. Current T.B No. Current T.B No. Current T.B No. Current
1 S1 – 1S2
Control & RelayPanel
02. CORE – 2
PRIMARY CURRENT INJECTED IN‘R’ph -----------A, ‘Yph-------------A’, ‘B’ ph ------------ A
CURRENTMEASURED AT
‘R’ Ph. CT ‘Y’ Ph. CT ‘B’ Ph. CT NEUTRAL
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PRECOMMISSIONING CHECK LIST/ SITETEST REPORT
Doc. No.
Equipment
STABILITY TESTSr. No. Date Rev.
Nil
Location & Designation Drawing No. Sheet2 of 3
Customer Project Job order No.
Tested by(name) Witnessed by(name)
Signature
Date
Signature
Date
1 C.T. M. B. T.B No. Current T.B No. Current T.B No. Current T.B No. Current
2 S1 – 2S2Control & RelayPanel
03. CORE –3
PRIMARY CURRENT INJECTED IN‘R’ph -----------A, ‘Yph-------------A’, ‘B’ ph ------------ A
CURRENTMEASURED AT
‘R’ Ph. CT ‘Y’ Ph. CT ‘B’ Ph. CT NEUTRAL
1 C.T. M. B. T.B No. Current T.B No. Current T.B No. Current T.B No. Current
3 S1 – 3S2
Control & relaypanel
[ 33 KV Transformer BAY # 2]
01. CORE – 1
PRIMARY CURRENT INJECTED IN
‘R’ph -----------A, ‘Yph-------------A’, ‘B’ ph ------------ A
CURRENT
MEASURED AT
‘R’ Ph. CT ‘Y’ Ph. CT ‘B’ Ph. CT NEUTRAL
1 C.T. M. B. T.B No. Current T.B No. Current T.B No. Current T.B No. Current
1 S1 – 1S2
Control & RelayPanel
02. CORE – 2
PRIMARY CURRENT INJECTED IN‘R’ph -----------A, ‘Yph-------------A’, ‘B’ ph ------------ A
CURRENTMEASURED AT
‘R’ Ph. CT ‘Y’ Ph. CT ‘B’ Ph. CT NEUTRAL
1 C.T. M. B. T.B No. Current T.B No. Current T.B No. Current T.B No. Current
2 S1 – 2S2
Control & RelayPanel
03. CORE –3
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PRECOMMISSIONING CHECK LIST/ SITETEST REPORT
Doc. No.
Equipment
STABILITY TESTSr. No. Date Rev.
Nil
Location & Designation Drawing No. Sheet3 of 3
Customer Project Job order No.
PRIMARY CURRENT INJECTED IN
‘R’ph -----------A, ‘Yph-------------A’, ‘B’ ph ------------ A
CURRENT
MEASURED AT
‘R’ Ph. CT ‘Y’ Ph. CT ‘B’ Ph. CT NEUTRAL
1 C.T. M. B. T.B No. Current T.B No. Current T.B No. Current T.B No. Current
3 S1 – 3S2
Control & relaypanel