Unlock Exclusive Discounts & Flash Sales! Click Here to Join the Deals on Every Wednesday!
Transformer oil or insulating oil is an oil that is stable at high temperatures and has excellent electrical insulating properties. It is used in oil-filled wet transformers, some types of high-voltage capacitors, fluorescent lamp ballasts, and some types of high-voltage switches and circuit breakers. Its functions are to insulate, suppress corona discharge and arcing, and to serve as a coolant. Transformer oil is most often based on mineral oil, but alternative formulations with different engineering or environmental properties are growing in popularity.