What is the BDV of oil in a transformer?

The BDV of oil in a transformer, or Breakdown Voltage, is a critical parameter that indicates the oil’s insulating strength. It measures the voltage at which the oil will fail and conduct electricity, leading to potential transformer failure. A higher BDV value signifies better insulation properties, essential for maintaining the operational integrity of power transformers. Regular testing of the BDV of oil helps in assessing the condition and reliability of the transformer insulation system.