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

The bdv value of new transformer oil in power transformers typically ranges from 30 to 70 kV, depending on the oil’s purity and quality. This breakdown voltage (bdv) indicates the oil’s insulating strength and its ability to withstand electrical stress. Regular testing of the bdv value is crucial for assessing the condition of transformer oil and ensuring the reliability of the power transformer.