What is the minimum breakdown voltage of transformer oil?

The minimum breakdown voltage of transformer oil is generally expected to be at least 30 kV for the oil to be considered effective and safe for use in transformers. Lower breakdown voltage may indicate contamination or degradation of the oil, which can compromise transformer performance and safety. Regular testing using devices such as the Globecore oil breakdown voltage tester is essential to monitor the condition of the oil and ensure it meets industry standards. For detailed methodologies and specifications, you can refer to the «breakdown voltage test of transformer oil pdf» for comprehensive guidelines and testing protocols.