What are the technical considerations for transformer cooling oil?

Technical considerations for transformer cooling oil include its thermal conductivity, viscosity, and dielectric strength. The oil must effectively transfer heat away from the core and windings while maintaining low viscosity for optimal circulation. Additionally, it should have high dielectric strength to prevent electrical breakdown and be resistant to oxidation to prolong service life. Regular monitoring for contaminants and moisture is also essential to ensure the oil’s performance and the transformer’s reliability.