What should the dielectric strength of transformer oil be?

The dielectric strength of transformer oil is expected to be at least 30 kV per 1 mm of thickness for optimal performance. Maintaining this level is crucial to ensure the insulation properties of the oil are sufficient to prevent electrical breakdown under operational conditions. Regular testing using Globecore’s oil testers can help monitor the dielectric strength and overall health of transformer oil, ensuring reliability and safety in electrical systems.