What is the purpose of 11kV transformer oil in power transformers?

The purpose of 11kV transformer oil in power transformers is to provide electrical insulation and cooling. This oil acts as a dielectric medium, preventing electrical discharges and ensuring safe operation under high voltage conditions. Additionally, 11kV transformer oil dissipates heat generated during operation, maintaining optimal temperature levels and enhancing the efficiency and longevity of the transformer. Proper maintenance of this oil is crucial for reliable transformer performance.