What is the role of electricity transformer oil in power transformers?

The role of electricity transformer oil in power transformers is to provide electrical insulation and cooling. Transformer oil acts as a dielectric medium, preventing electrical discharges between conductive parts. Additionally, it dissipates heat generated during operation, maintaining optimal temperatures and ensuring efficient performance. The oil also helps to protect internal components from oxidation and moisture, thereby enhancing the longevity and reliability of the power transformer.