Oil-immersed transformer insulating oil is used as a ground terminal of the housing to its insulation, it is a liquid dielectric transformers. This is the core of the 100kva single phase pole mounted transformer windings which are immersed in transformer oil, the oil can not be the case in the absence of work (test may be), the oil can flow away the core, the winding of the heat, and the oil is insulated.
One is the effect of edge insulation oil, the other is the heat. Oil-immersed transformer inside the body frame, the core windings are immersed in insulating oil. So called "oil-immersed" in. Transformer oil usually paraffinic oil production oil # 10, # 25 intermediate base oil produced oil, naphthenic oil production # 25 and # 45 transformer oil. With the development of modern science and technology, power system insulation material used has changed. Network now runs transformer insulation forms: SF6 11kv single phase transformer, epoxy organic insulation (dry) transformer. However, the voltage level is limited to 110kV.
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