What is the bdv value of transformer oil in power transformers?

The bdv value of transformer oil in power transformers, or breakdown voltage, is a critical parameter indicating the oil’s insulating properties. Typically, a bdv value above 30 kV is considered acceptable for new transformer oil, ensuring effective insulation and preventing electrical breakdown. Regular testing of the bdv value helps in assessing the oil’s condition and the overall health of the transformer, guiding maintenance decisions.