Doc. No.:- E&I/SW/01/001 Issue No. / Date:- 001/01-12-2012 Rev. No / Date:- 000/00-00-000
S. No. ACTIVITY YES/NO REMARKS
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 Oil pumps and cooling fans to be cleaned and lubricated and trailrun of
each fans and pumps .
4 Checking of insulation & bushing and inspection for any crack/ chipping &oil level
BDV &DGA test to be made
400 KV MSDS-1 , JSPL Angul
TITLEDEPARTMENT MAINTENANCE FORMAT FOR TRANSFORMER DEPARTMENT : ELECTRICAL &INSTRUMENTATION
MONTHLY MAINTENANCE OF TRANSFORMER
Switchyard Name :
Equipment Name :
DATE :
MAKE :
RATING :
S. No. ACTIVITY YES/NO REMARKS
1 Whether permit on the transformar taken. PTW No.
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 Whether Ground level earth connection on transformer & Transformer LA. Clean Corrosion as Required
6 Electrical Checking of Bucholz relay, Oil Surge Relay & Pressure Relieve Devices 7 Whether permit cancelled after completing the job.
8 Permit No.: Date: 9 Observation
QUARTERLY MAINTENANCE OF TRANSFORMER
Switchyard Name :
Equipment Name :
DATE :
MAKE :
RATING :
Doc. No.:- E&I/SW/01/001 Issue No. / Date:- 001/01-12-2012 Rev. No / Date:- 000/00-00-000
S. No. ACTIVITY YES/NO REMARKS
1 Whether permit on the transformar taken. PTW No.
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.
6 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
13 Calbration of OTI and WTI to be carried out and Oil level in thermometre oil pockets checking and charging.
14 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.: Date: TITLE
DEPARTMENT MAINTENANCE FORMAT FOR TRANSFORMER DEPARTMENT : ELECTRICAL &INSTRUMENTATION
MAINTENANCE OF TRANSFORMER
Switchyard Name :
Equipment Name :
DATE :
MAKE :
RATING :
S. No. ACTIVITY YES/NO REMARKS
1 Whether permit on the transformar taken. PTW No.
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 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 Neutral Earth Pit Resistance
8 Cleaning of oil pumps and cooling fans and lubrication and trailrun of each fans and pumps .
9 Oil level of conservator tank, HV bushing checking and topping.
10 Insepection of Oil leakage and gasket damages and rectified wherever found.
11 Insepection of LV bushing chamber for any oil seepages.
12 Carry out IR Measurment & PI of wdgs
13 Tan delta,oil BDV, DGA,Oil PPM,winding resistance,IR value test to be taken and recorded.
14 Calbration of OTI and WTI to be carried out and Oil level in thermometre oil pockets checking and charging.
15 Checking of cooling system , buchholz relay , interlock etc. 16 Whether permit cancelled after completing the job. 17 Manual/ Auto starting of oil pumps & fans checked. 18 Permit No.: Date:
YEARLY MAINTENANCE OF TRANSFORMER
Switchyard Name :
Equipment Name :
DATE :
MAKE :
RATING :
Doc. No.:- E&I/SW/01/001 Issue No. / Date:- 001/01-12-2012 Rev. No / Date:- 000/00-00-000
S. No. ACTIVITY YES/NO REMARKS
1 Whether permit on the transformar taken. PTW No.
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 Inspect Selector & Diverter Switch and Maintain in accordance with Manafacturer's
specification
5 Measurment of Winding resistance at all tap position 6 Measurment of winding Turns Ratio
7 Whether permit cancelled after completing the job. 8 Permit No.: Date: 9 Observation
TITLE
DEPARTMENT MAINTENANCE FORMAT FOR TRANSFORMER DEPARTMENT : ELECTRICAL 7INSTRUMENTATION
