What is transformer mineral insulating oil used for in power transformers?

Transformer mineral insulating oil is used for several critical functions in power transformers. It serves as an electrical insulator, preventing short circuits and electrical breakdowns. Additionally, transformer mineral insulating oil dissipates heat generated during operation, maintaining optimal temperature levels. It also acts as a coolant, ensuring efficient thermal management, and provides protection against moisture and contaminants, thereby enhancing the longevity and reliability of the transformer.