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400 KV MSDS-1 , JSPL Angul TITLE DEPARTMENT MAINTENANCE FORMAT FOR TRANSFORMER DEPARTMENT : ELECTRICAL &INSTRUMENTATION

Doc. No.:- E&I/SW/01/001 Issue No. / Date:- 001/01-12-2012 Rev. No / Date:000/00-00-000

MONTHLY MAINTENANCE OF TRANSFORMER Switchyard Name : Equipment Name : DATE : MAKE : RATING : S. No.

ACTIVITY

1

Check Colour of Silica Gel in Breather ,If crystals are Pink,Replace with Reactivated Crystals.Check Oil Level in Oil cup,Top-up if required

2

Checking of Oil Leakage ,rectify wherever found.

3 4

YES/NO

REMARKS

Oil pumps and cooling fans to be cleaned and lubricated and trailrun of each fans and pumps . Checking of insulation & bushing and inspection for any crack/ chipping &oil level BDV &DGA test to be made

5

Signature of Maintenance Engg.

Signature of Substation Incharge

400 KV MSDS-1 , JSPL Angul TITLE DEPARTMENT MAINTENANCE FORMAT FOR TRANSFORMER DEPARTMENT : ELECTRICAL (O&M)

Doc. No.:- ELE (O&M)/SW/01/001 Issue No. / Date:- 001/01-12-2012 Rev. No / Date:000/00-00-000

QUARTERLY MAINTENANCE OF TRANSFORMER Switchyard Name : Equipment Name : DATE : MAKE : RATING : S. No.

ACTIVITY

1

Whether permit on the transformar taken.

2

Whether the bay and the transformer in which maintenance is to done is identified correctly and the primary part discharged with the help of portable earth rod.

3

Whether isolation of deluge (Fire fighting) system is done.

4

Whether oil BDV, DGA,Oil PPM taken and recorded.

5 6

REMARKS PTW No.

Whether Ground level earth connection on transformer & Transformer LA. Clean Corrosion as Required Electrical Checking of Bucholz relay, Oil Surge Relay & Pressure Relieve Devices

7

Whether permit cancelled after completing the job.

8

Permit No.:

9

YES/NO

Date:

Observation

Signature of Maintenance Engg.

Signature of Substation Incharge

400 KV MSDS-1 , JSPL Angul TITLE DEPARTMENT MAINTENANCE FORMAT FOR TRANSFORMER DEPARTMENT : ELECTRICAL &INSTRUMENTATION

Doc. No.:- E&I/SW/01/001 Issue No. / Date:- 001/01-12-2012 Rev. No / Date:000/00-00-000

MAINTENANCE OF TRANSFORMER Switchyard Name : Equipment Name : DATE : MAKE : RATING : S. No. 1

ACTIVITY Whether permit on the transformar taken.

2

Whether the bay and the transformer in which maintenance is to done is identified correctly and the primary part discharged with the help of portable earth rod.

3

Inspection of main and OLTC MB's /contactors/ switches etc. to be carried out.for mark of overheating in the TB/power & control cable.

12

Take Main Tank & OLTC Tank oil samples. Carry out DGA ,BDV &Oil PPM Tests & Record Results

14

PTW No.

Calbration of OTI and WTI to be carried out and Oil level in thermometre oil pockets checking and charging. Cooling system , buchholz relay ,oil surge relay &PRV, interlock etc. to be checked .

15

Whether permit cancelled after completing the job.

16

Manual/ Auto starting of oil pumps & fans checked.

17

Permit No.:

18

REMARKS

Whether isolation of deluge (Fire fighting) system is done.

6

13

YES/NO

Date:

Observation

Signature of Maintenance Engg.

Signature of Substation Incharge

400 KV MSDS-1 , JSPL Angul TITLE DEPARTMENT MAINTENANCE FORMAT FOR TRANSFORMER DEPARTMENT : ELECTRICAL &INSTRUMENTATION

Doc. No.:- E&I/SW/01/001 Issue No. / Date:- 001/01-12-2012 Rev. No / Date:000/00-00-000

YEARLY MAINTENANCE OF TRANSFORMER Switchyard Name : Equipment Name : DATE : MAKE : RATING : S. No. 1

ACTIVITY Whether permit on the transformar taken.

2

Whether the bay and the transformer in which maintenance is to done is identified correctly and the primary part discharged with the help of portable earth rod.

3

YES/NO

REMARKS PTW No.

Whether isolation of deluge (Fire fighting) system is done.

4

The radiators clened externally.

5

The insulation & bushing are cleaned and inspection for any crack/ chipping carried out.

6

Inspection of main and OLTC MB's /contactors/ switches etc. carried out.for mark of overheating in the TB/power & control cable. Inspection of OLTC operation .

7 8 9 10 11 12 13 14 15 16 17 18 19

Neutral Earth Pit Resistance Cleaning of oil pumps and cooling fans and lubrication and trailrun of each fans and pumps . Oil level of conservator tank, HV bushing checking and topping. Insepection of Oil leakage and gasket damages and rectified wherever found. Insepection of LV bushing chamber for any oil seepages. Carry out IR Measurment & PI of wdgs Tan delta,oil BDV, DGA,Oil PPM,winding resistance,IR value test to be taken and recorded. Calbration of OTI and WTI to be carried out and Oil level in thermometre oil pockets checking and charging. Checking of cooling system , buchholz relay , interlock etc. Whether permit cancelled after completing the job. Manual/ Auto starting of oil pumps & fans checked. Permit No.:

Date:

Observation

Signature of Maintenance Engg.

Signature of Substation Incharge

400 KV MSDS-1 , JSPL Angul TITLE DEPARTMENT MAINTENANCE FORMAT FOR TRANSFORMER DEPARTMENT : ELECTRICAL 7INSTRUMENTATION

Doc. No.:- E&I/SW/01/001 Issue No. / Date:- 001/01-12-2012 Rev. No / Date:000/00-00-000

MAINTENANCE OF TRANSFORMER-5 YEAR Switchyard Name : Equipment Name : DATE : MAKE : RATING : S. No. 1

ACTIVITY Whether permit on the transformar taken.

2

Whether the bay and the transformer in which maintenance is to done is identified correctly and the primary part discharged with the help of portable earth rod.

3 4 5 6

REMARKS PTW No.

Whether isolation of deluge (Fire fighting) system is done. Inspect Selector & Diverter Switch and Maintain in accordance with Manafacturer's specification Measurment of Winding resistance at all tap position Measurment of winding Turns Ratio

7

Whether permit cancelled after completing the job.

8

Permit No.:

9

YES/NO

Date:

Observation

Signature of Maintenance Engg.

Signature of Substation Incharge