What are the technical aspects of electrical transformer oil?

Electrical transformer oil, primarily mineral oil, serves as an insulating and cooling medium in power transformers. Key technical aspects include its dielectric strength, which prevents electrical breakdown, and its thermal conductivity, which aids in heat dissipation. Additionally, transformer oil must have low viscosity for efficient circulation and high oxidation stability to prolong service life. The oil’s moisture content and acidity levels are also critical, as they affect the transformer’s performance and longevity. Regular testing ensures optimal conditions.