TRANFORMER OIL IMPORTANCE AND USES|Online electrical engineering & Electrical Interview Questions

Wednesday, December 1, 2010


Here i am answering another question asked by Amit.
What is the importance of Transformer Oil ?
Transformer Oil is a highly refined mineral oil that has excellent insulating properties and is very stable at high temperatures.It also serves as a coolant.

In a Transformer, the primary winding and secondary windings are placed inside a casing.To provide electrical insulation between the live parts inside the transformer casing we use Transformer Oil.Tranformer Oil should also withstand high temperatures for a long period.The cooling of transformer can be increased by providing cooling tubes and external fans outside the transformer casing.  

Buchholz Relay is a protective device used in transfomers.Also various testing is also done on the transformer to test the oil quality.Another important thing is we must have seen some tranformers bursting near our place.This occurs due to insulation failure inside the transfromer.Reason behind this might be the Transformer Oil used would have become old and lot of sludge would have formed which causes insulation failure. 


tejesh said...

nice answer.....its very useful for learning basics thanks for developing this website

Anonymous said...

am nt able 2 post a question,the link is nt working it seems..

RAJ KAMAL said...

I have checked the link..its working properly do post your question in the comment section or you need to be a follower to sign in and post your question in the "ask your doubts" section