What is the purpose of using oil in transformer tanks?which oil is used?
Ans:the function of oil is two-fold.It is used
1)As a coolant
2)As an insulator.
The oil used is mineral oil.Trade names are ASKARELS,PYROCLOR.Good transformer oil should be absolutely free from alkalies,sulphar and particularly from moisture.Hence, the tanks are sealed air-tight.
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