What is the dielectric dissipation factor of transformer oil?

The dielectric dissipation factor of transformer oil, often referred to as the power factor, measures the energy loss in the oil when subjected to an electric field. It is typically expressed as a percentage and indicates the oil’s insulating properties. A lower dissipation factor signifies better insulation quality, while values above 0.5% may indicate contamination or degradation. Regular testing is essential for assessing the condition of transformer oil and ensuring optimal performance of power transformers.