What is the dielectric strength of transformer oil in kV?

The dielectric strength of transformer oil generally ranges from 30 kV per cm to 70 kV per cm depending on the oil’s purity and condition. Testing the dielectric strength is essential to ensure the oil’s insulating properties remain adequate for safe and effective transformer operation. Regular testing, such as the dielectric strength of transformer oil experiment, helps monitor oil quality and detect contamination or degradation over time.