what oil is in a transformer?

Transformers typically use mineral oil as their insulating and cooling medium. This oil serves to insulate the internal components and dissipate heat generated during operation. In some cases, biodegradable or synthetic oils may be used for environmental considerations. The oil’s properties, such as high dielectric strength and thermal conductivity, are crucial for the efficient and safe operation of the transformer. Regular monitoring of the oil’s condition is essential for maintaining transformer performance.