Question { TATA, 34542 }

what is the breakdown voltage value in BDV test in
transformers?

Answer

For veryfication of oil purity every year to be checked the
BDV(breakdown voltage),we have take out the transformer
oil in the transformer and collect in the high voltage kit
inthe kit two stem will be there within the 2mm gap and
then apply the high voltage 50kv for 1 minute and it
shiould be withstand upto the mentioned time.Otherwise oil
to be filtered.