What is power transformer oil used for?

Power transformer oil is primarily used as an insulating and cooling medium in electrical power transformers. It helps in dissipating heat generated during the electrical operation and prevents arcing and electrical breakdown by providing high dielectric strength. Additionally, power transformer oil serves to protect the internal components from oxidation and moisture, thereby prolonging the lifespan of transformers. It also helps in the efficient transfer of thermal energy within the transformer, ensuring reliable and safe power distribution in electrical networks.