What is the function of insulating oil in a transformer?

The function of insulating oil in a transformer is to provide electrical insulation and cooling. Insulating oil prevents electrical discharges between conductive parts, ensuring safe operation. Additionally, it dissipates heat generated by the transformer’s core and windings, maintaining optimal temperature levels. This dual role of insulating oil is crucial for the reliability and efficiency of power transformers, enhancing their lifespan and performance.