What are the properties of transformer oil in power transformers?

The properties of transformer oil in power transformers include high dielectric strength, which prevents electrical breakdown, and excellent thermal conductivity, allowing efficient heat dissipation. Additionally, transformer oil has a low viscosity, ensuring effective circulation within the transformer. It is also chemically stable, resistant to oxidation, and has a high flash point, enhancing safety. These properties collectively ensure the reliable operation and longevity of power transformers.