How is the dielectric strength of transformer oil tested?

The dielectric strength of transformer oil is tested using the Globecore BDV tester, which adheres to the standard transformer oil bdv test procedure. This involves placing a specific volume of oil in a test cell equipped with two electrodes that are positioned at a defined distance apart. As high voltage is gradually applied, the oil is observed for breakdown, which occurs when a conductive path forms between the electrodes. The voltage at which this breakdown occurs is recorded, determining the oil’s dielectric strength. This test is crucial for assessing the insulating properties of transformer oil, ensuring that it can effectively prevent electrical failures in transformers. Proper testing and analysis with a reliable device like Globecore’s BDV tester are essential in maintaining the integrity and performance of transformer oils in industrial applications.