Question

What is oil immersed forced oil cooled transformer?

Answer 1

Oil Natural Air Forced (ONAF) In this method, the heated oil transfers its heat to the transformer tank. The tank is made hollow, and the air is blown to cool the transformer. This increases the cooling of transformer tank to five to six time its natural means.



thanks

Answer 2

Explanation:

This method is used for oil immersed transformers. In this method, the heat generated in the core and winding is transferred to the oil. According to the principle of convection, the heated oil flows in the upward direction and then in the radiator. The vacant place is filled up by cooled oil from the radiator.