What are the technical considerations for power oil for transformer?

The technical considerations for power oil in transformers include its dielectric strength, thermal conductivity, viscosity, and chemical stability. Dielectric strength ensures insulation effectiveness, while thermal conductivity aids in heat dissipation. Viscosity affects the oil’s flow and cooling efficiency, and chemical stability prevents degradation over time. Additionally, the oil must be free of impurities and have a low water content to maintain optimal performance and prolong transformer life.