Transformer oil, also known as insulating oil, is a specialized type of oil that is used in electrical transformers and other high-voltage equipment to provide insulation and cooling. The oil is a mineral oil or synthetic oil that has been specially formulated to withstand the high temperatures and electrical stresses that are present in transformers and other electrical equipment.
The main function of transformer oil is to provide electrical insulation between the windings of a transformer, preventing electrical breakdown and short circuits. The oil also acts as a coolant, absorbing heat generated by the transformer and dissipating it to the surrounding environment.
Transformer oil is also designed to be chemically stable, resistant to oxidation, and non-reactive with other materials used in the transformer. This is important because the oil can come into contact with other materials, such as insulating paper and copper windings, which can degrade over time and generate contaminants that can affect the performance of the oil.
Transformer oil is typically tested regularly to ensure that it is performing correctly and that it has not become contaminated or degraded over time. If the oil is found to be degraded or contaminated, it may need to be replaced to maintain the safety and reliability of the transformer.
