Transformer Oil Details
Transformer Oil: Transformer oil or insulation oil is an oil that is stable at high temperatures and has excellent insulating propertise.
Purpose of Transformer Oil: It is used in oil filled transformers, some types of high voltage capacitors, switches, and circuit breakers. Its functions are to insulate, suppress corona & arcing and to serve as a coolent. It serves mainly two purposes, one it is liquid insulation in electrical power transformers and two it is dissipates heat of the transformer i.e. acts as a coolent. In addition to these, this oil serves other two purposes, it helps to preserve the core & winding as these are fully immersed inside oil and another important purpose of it is, it prevents direct contact of atmospheric oxygen with cellulose made paper insulation of winding, which is susceptable oxidation. Types of Transformer Oil: Generally two types of transformer oil are used. Those are: 1) Polychorinated Biphenyls (PCBs) & 2) Mineral Oil 1. Polychlorinated Biphenyls (PCBs): Polychlorinated Biphenyls (PCBs) are often used as a dielectric fluid since they are not flammable. PCB do not breakdown when released into the environment but accumulate in the tissues of plants and animals, where the can have hormon like effects. when burned, PCB can form highly toxic products, such as chlorinated dioxins and chlorinated dibenzofurans. It was banned at 1970, 1979 (at USA) by California code of regulations. The common brand names for PCB liquides include, "Askarol", "Inerteen", "Arocol", "Sovol", "Bakola 131", "Hydol", "Therminol" etc. 2. Mineral Oil: The mostly used transformer oil is mineral oil. Generally there are two types of mineral transformer oil are used: 1). Paraffin Based Transformer Oil & 2.) Neptha Based Transformer Oil