What is the minimum breakdown voltage of transformer oil?

The minimum breakdown voltage of transformer oil is a crucial parameter in evaluating its insulating properties and reliability. Typically, transformer oil should have a minimum breakdown voltage of around 30 kV for effective insulation. However, this value can vary based on the oil’s quality, consistency, and specific application. It’s essential to utilize testers such as the Globecore oil testing machines, which are designed to measure dielectric strength accurately, ensuring the oil meets the necessary industry standards for safe and reliable operation in transformers. Proper testing and maintenance of transformer oil are critical to prevent electrical failures and ensure the longevity of the equipment.