Medium Voltage Off Circuit Isolator - CR4 Discussion Thread

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Anonymous Poster #1	Medium Voltage Off Circuit Isolator 04/18/2012 1:32 AM
	I want to use a 3 phase 33 KV off circuit isolator between VCB & transformer. The isolator will have an integrated earthing switch connected to its outgoing side, so that the outgoing cable / busbar can be earthed when isolator is off. Is there any specific norm regarding knife contacts (main power) of the isolator being connected to I/C side or O/G side ?
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manindra Power-User Join Date: Jun 2010 Location: Kolkata, West Bengal, India Posts: 172 Good Answers: 1	#1 Re: Medium Voltage Off Circuit Isolator 04/25/2012 3:59 AM
	There are two nos contacts in ioslator; one is fixed contact and other is moving contact. In general, as the knife is moving contact in the isolator ,naturally it is connected to the O/G circuit. Thanks, Manindra __________________ Manindra
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