what is the accepted value of dielectric strength of transformer oil?

The accepted value of dielectric strength for transformer oil typically ranges from 30 to 50 kV per centimeter (kV/cm). This property is crucial as it indicates the oil’s ability to withstand electrical stress without breaking down. Higher dielectric strength values are preferred, as they enhance the insulation properties of the transformer, ensuring reliable operation and reducing the risk of electrical failures. Regular testing of dielectric strength is essential for maintaining transformer performance.