What are the technical considerations for mineral insulating oil in transformers?

The technical considerations for mineral insulating oil in transformers include its dielectric strength, thermal conductivity, viscosity, and oxidation stability. The oil must have a high dielectric strength to prevent electrical breakdown, adequate thermal conductivity for efficient heat dissipation, and appropriate viscosity for effective circulation. Additionally, oxidation stability is crucial to prolong the oil’s lifespan and prevent the formation of harmful sludge, ensuring reliable transformer operation and minimizing maintenance needs.