How is the transformer BDV test conducted?

The transformer BDV (Breakdown Voltage) test is conducted using a specialized device, commonly referred to as a megger oil BDV test set. This equipment is designed to measure the dielectric strength of transformer oil, which is crucial for determining the oil’s ability to resist electrical breakdown. The procedure typically involves filling a test cell with the transformer oil sample and applying a steadily increasing voltage until the dielectric breakdown occurs. The megger oil BDV test set precisely records the voltage at which the breakdown happens, providing essential information about the quality and condition of the oil. It is essential to follow safety protocols during this testing to prevent electrical hazards and ensure accurate measurements.