What is transformer oil in the context of power transformers?

Transformer oil in the context of power transformers is a specialized insulating and cooling fluid used to enhance the performance and safety of electrical transformers. It serves to insulate the internal components, dissipate heat generated during operation, and prevent oxidation and moisture ingress. The chemical properties of transformer oil, such as high dielectric strength and thermal stability, are crucial for maintaining the efficiency and longevity of power transformers.