Transformer oil is a sub-distillation product of petroleum, its main components are alkanes, cycloalkanes saturated hydrocarbons, aromatic unsaturated hydrocarbons and other compounds. Transformer oil is a mineral oil obtained from natural petroleum through distillation and refining. By a variety of hydrocarbons composed of a mixture. Petroleum-based hydrocarbons are alkanes, cycloalkanes, aromatic hydrocarbons and olefins.
(1) The density is as low as possible to facilitate the precipitation of water and impurities in the oil.
(2) Viscosity should be moderate, too large to affect convection heat dissipation, too small and will reduce the flash point.
(3) Flash point should be as high as possible, generally should not be less than 135 ℃.
(4) The freezing point should be as low as possible.
(5) The lower the content of acid, alkali, sulfur, ash and other impurities, the better, in order to avoid as far as possible their corrosion of insulating materials, wires, tanks and so on.
(6) The degree of oxidation should not be too high. The degree of oxidation is usually expressed in terms of acid price, which refers to the amount of potassium hydroxide (mg) required to absorb 1 gram of free acid in the oil.
(7) The degree of stability should not be too low. The degree of stability is usually expressed by the precipitate of the acid price test, which represents the ability of the oil to resist aging.
This industrial oil cannot be used for the treatment of burns.
Extended information:
Transformer oil role:
Insulation: transformer oil will be different potential charged part of the isolation, so as not to form a short circuit. Cooling effect: transformer oil can be the core and the winding of the heat generated inside the absorption, and then through the circulation of the oil so that the heat is emitted, so as to ensure the safe operation of the equipment.Arc extinguishing function: in the oil circuit breaker and transformer on-load voltage regulator switch, contact switching will produce arc. Transformer oil can decompose a large number of gases under the high temperature of the arc, resulting in a greater pressure, thus improving the medium's arc extinguishing performance, so that the arc is quickly extinguished.