i have dry type transformers can you help me that how many
tests i can do to know the performence of transformer and
also please tell me about the BDV test and Insulation
resistance test in oil cooled transformers
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Answer Posted / s ghosh thakur
The following tests to be done during commissioning.
1.Duster value.
2.PI test The value should be above2.o
3.Tan delta test.
4.Ratio test.
5.short ckt.impedance test.
6.vector test.
7.IR test.
8.Polarity test. Thats are sufficient.
BDV value of TRANS OIL should not be less than 50 kv.
IR value of oil cooled trans should be 100M w.r.t gr.and HT
to LT also 100M.PI test should carried out value min 1.5 to
2.0
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