What is the role of transformer oil in a transformer?

The role of transformer oil in a transformer is to provide electrical insulation and cooling. Transformer oil acts as a dielectric fluid, preventing electrical discharges and maintaining the insulation integrity. Additionally, it dissipates heat generated by the transformer’s operation, ensuring optimal performance and longevity. The properties of transformer oil, such as its high flash point and low viscosity, are crucial for effective heat transfer and safety in power transformers.