ISOLATION OF PT - CR4 Discussion Thread

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Anonymous Poster	ISOLATION OF PT 08/18/2009 1:50 AM
	WHYwe isolate the PT while testing power transformer? i.e insulation test or meggar test and TTR?
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PWSlack Guru Join Date: Jan 2007 Location: In the bothy, 7 chains down the line from Dodman's Lane level crossing, in the nation formerly known as Great Britain. Kettle's on. Posts: 32175 Good Answers: 839	#1 Re: ISOLATION OF PT 08/18/2009 7:46 AM
	On a Megger test, if the insulation fails then the local damage will be trivial to negligible. If the transformer is connected to the mains and the insulation fails, then the operator might not become very popular with the operation's fire indemnity insurance company, depending upon the size of it. The purpose of the first is to achieve a high level of confidence that the second will not happen. __________________ "Did you get my e-mail?" - "The biggest problem in communication is the illusion that it has taken place" - George Bernard Shaw, 1856
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