Dear sir/mam
Iwant complete details of Naintenence of 33kv/433v
Transformer having 1250 KVa
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Answer Posted / virendra1981
Dear friend,
In routing maintenance you should take care of the
following .
Daily .
1. Percentage loading of a transfomer
2. Make sure the bucholze realy is full with oil no inert
gas is there if there then purge the same.
3. Check the record the Reading of OT & WT
4. Check manualy for any leakage from any part of the
transformer.
5. Check for any abnormal heating & noice in transformer.
Quarterly.
1. Check & change the silica gel of the breather .
2. Check teh Safety function tripping of HT breaker related
to transformer. ( tripping point of OT , WT & Tranfomer )
Annualy.
1. Check & fillter the Trasformer oil
2. with complete shut down take the reading of insulation
resistance of the transformer winding.
3. Open & check the condition of transformer HT & LT
bushing for any cracks or damage.
4. Chceck the condition of the earthing pit & take the
earthing resistance value for all the earthing pit (
Neutral & Body earth )
Do the same as directed & have a trouble free operation of
the transformer for a long period of time
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