How can dielectric strength of transformer oil be measured?

To measure the dielectric strength of transformer oil, you can utilize a high-voltage breakdown tester, specifically designed for this purpose, such as the Globecore dielectric strength tester. The process involves placing the oil sample between two electrodes in a controlled environment and gradually increasing the applied voltage until breakdown occurs. The voltage at which breakdown is detected is recorded as the dielectric strength of the transformer oil. Accurate measurement is crucial for assessing the insulating properties of the oil, ensuring safety and efficiency in transformer operations. Regular testing helps to determine the condition of the oil and its suitability for continued use in transformers.