What are the design features of oil-filled transformers?

Oil-filled transformers are designed with several key features to enhance performance and safety. They utilize mineral oil as an insulating and cooling medium, which helps dissipate heat generated during operation. The tank is typically constructed from steel to withstand internal pressure and external environmental factors. Additionally, these transformers often include conservator tanks to accommodate oil expansion and contraction, and they may have breather systems to prevent moisture ingress, ensuring reliable operation and longevity.