what is the use of oil in transformer?

Oil in transformers serves multiple essential purposes. Primarily, it acts as an insulating medium, preventing electrical breakdown between conductive parts. Additionally, transformer oil facilitates heat dissipation, absorbing and transferring heat generated during operation to maintain optimal temperatures. The oil also provides protection against moisture and contaminants, enhancing the transformer’s longevity and reliability. Overall, transformer oil is crucial for efficient operation and safety in electrical systems.