Transformer tank is the transformer shell, built-in core, winding and transformer oil, while a certain heat from the role.
   The role of the transformer cooling device is, when the transformer upper oil temperature temperature difference, the formation of oil circulation through the radiator, the oil after cooling by the radiator back to the tank, a lower oil temperature transformer role. To improve the cooling effect, can be air-cooled, oil-air cooling or oil-water cooling and other measures.