What are the physical properties of transformer oil?

The physical properties of transformer oil include its viscosity, density, dielectric strength, and flash point. Viscosity affects the oil’s flow and cooling efficiency, while density is crucial for buoyancy and separation of moisture. Dielectric strength indicates the oil’s ability to insulate and prevent electrical breakdown, and the flash point is essential for safety, determining the temperature at which the oil can ignite. These properties are vital for the effective operation of power transformers.