What are the technical aspects of electric transformer oil?

Electric transformer oil, primarily mineral oil, serves as an insulator and coolant in power transformers. Key technical aspects include its dielectric strength, which prevents electrical breakdown, and its thermal conductivity, which facilitates heat dissipation. Additionally, transformer oil must have low viscosity for efficient circulation and high oxidation stability to prolong service life. The presence of additives can enhance properties like corrosion resistance and moisture absorption, ensuring optimal performance and reliability of the transformer.