HT Motor Precommissioning

COMMISSIONING PROCEDURE

COMMNG / ELEC / 043PROJECT : 5 x 660MW Mundra Power Project.

PRECOMMISSIONING CHECK LIST AND TEST REPORT - HT MOTOR

1. LOCATION : 2. DESIGNATION :

3. NAME PLATE DETAILS :

MAKE : POWER : VOLTAGE :

FULL LOAD CURRENT : SERIAL NO. : MODEL NO. : FREQUENCY : COS : EFFICIENCY : IP : SPEED CONNECTION : INSULATION CLASS : FRAME SIZE :

ROTOR TYPE : AMB.TEMP. : NO. OF START : DUTY : BEARING DE/NDE :

4. MOTOR SPACE HEATER : POWER RATING :

VOLTAGE RATING :

RESISTANCE VALUE : OHMS

INSULATION RESISTANCE . (Applied Voltage : V)

SEPCO-III Adani Project Adani Commissioning

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CURRENT MEASURED :

HEATER OPERATION :

5. SWITCHBOARD NAME & FEEDER NO. FOR HT MOTOR :

6. BREAKER TYPE :

7. BREAKER STARTER TYPE :

8. MOTOR POWER CABLE SIZE :

9. MOTOR CONTROL CABLE SIZE :

10. MOTOR ANTI CONDENSATION HEATER CABLE SIZE :

11.EARTHING CABLE / STRIP SIZE :

12.MOTOR TERMINALS TIGHTNESS : 13.OUTDOOR MOTOR CANOPY :

14. LOCAL CONTROL STATION INSTALLATION :

15. FIELD AMMETER AS PER THE CT SPECIFICATION :

16. PANEL AMMETER AS PER THE CT SPECIFICATION :

17. LOCAL CONTROL STATION EARTHING INSTALLATION :

18. ELECTRICAL CLEARANCE TO THE BODY :

19. HT MOTOR RTD VALUE ( FOR Winding / Bearing) : ( RTD VALUE AT AMBIENT TEMPERATURE ) BEARING TEMPERATURE GAUGE READING AT AMBIENT TEMPERATURE 1) DRIVING END : 2) NON DRIVING END :

WINDING TERMINAL NO.RESISTANCE

VALUE BEARINGTERMINAL

NO.RESISTANCE

VALUERph DRIVING END


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Yph NON DRIVING END

Bph

20. INSULATION RESISTANCE VALUE OF MOTOR :

Megger Make : Megger Sl.no : Voltage Rating of Megger :- 5 kV

S.NO REFERENCE R15 R60 R600 POLARISATION INDEX = R600 / R151. U1 V1 + W1 + EARTH2. V1 U1 + W1 + EARTH


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3. W1 U1 + V1 + EARTH

21. ROTOR INSULATION RESISTANCE TEST : Megger Make :. Megger Sl.no : Voltage Rating of Megger ..V.

S.NO REFERENCE IR VALUE1.

22. WINDING RESISTANCE TEST : ( microohms / milliohms / ohms )

U1 U2 V1 V2 W1 W2

23. POLARITY TEST :

S.NO DESCRIPTION U1 U2 V1 V2 W1 W21.

24. HIGH VOLTAGE TEST : THIS TEST WILL BE CONDUCTED, ONLY IF RECOMMENDED BY MANUFACTURER / VENDOR. VOLTAGE APPLIED : 10kV (AC ). TIME DURATION : 60 SECONDS.

S.NO REFERENCE EARTHED LEAKAGE CURRENT (milliamps) REMARK1. U1 EARTH V1 + W1 EARTH2. V1 EARTH W1 + U1 EARTH3. W1 EARTH U1 + V1 EARTH


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25. CHECK LIST

S.NO Check List Status o.k / not o.k Remarks

1. Check that motor base frame ( solo plate ) is properly grouted / bolted to the foundation.

2. Check that motor is firmly bolted to the base frame.

3. Check that motor is free to rotate by hand , without any abnormal sound.

4. Check the condition of grease in motor bearings.

5. Check continuity of earthing up to earth riser / grid.

6. Check Continuity / IR value proper termination at both ends for following points.6.1 Power cable (Including Phase Indication)

6.2 Space heater cable.

6.3 Local start/stop station cable.

7. Check that Motor / Drive is clearly labelled.

8. Check for cleanliness of Motor & its terminal box.

9. Check Local start / stop station functionally upto HT Feeder.

10. Check that Motors and push button stations in hazardous are designed for the same.

11. Check that Cable glands are properly installed and terminals covers are properly closed.12. Direction of motor from driving end.13. Check speed switch(if provided) upto HT Feeder. 14. Check Space Heater operation from HT feeder.


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26. CHECK STABILITY OF MOTOR DIFFERENTIAL PROTECTION: Current Measured in Motor Differential Relay.

(i) When Current is injected B/W Uphase & Vphase.Bypassing the Uphase & Vphase winding by putting the loop across the winding.

Description Uph Vph Wph 3IoPhase SideNeutral SideI d Differential Current ---I r Restraint Current ---

(ii) When Current is injected B/W V phase & W phase. Bypassing the V phase & W phase winding by putting the loop across the winding.

Description Uph Vph Wph 3IoPhase SideNeutral SideI d Differential Current ---I r Restraint Current ---


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HT Motor Precommissioning

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