What is the minimum dielectric strength of transformer oil?

The minimum dielectric strength of transformer oil is typically around 30 kV per centimeter. This value can vary based on specific oil types and conditions, but maintaining a dielectric strength above this threshold is crucial for ensuring the safe and efficient operation of transformers. Regular testing using devices like those from Globecore can help monitor and maintain the dielectric strength of transformer mineral oil, which is essential for preventing electrical failures.