Do you know, how transformers are cooled ??
The major factor for the generation of heat in the transformer is the various losses like hysteresis, eddy current, iron, and copper loss.
The various coolants used for the cooling purpose of the transformer are air, synthetic oils, mineral oils, gas, water.
When the temperature of the transformer becomes higher as compared to the temperature of the surrounding air, thus by the process of natural convection, heated air is replaced by the cool air. This method is known as a self-cooled method.
When the heat generated is cooled by the forced air circulation method with the help of fans and blowers, high velocity of air is forced on the core and the windings of the transformer. This method is known as Forced cooled method.
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