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SABNAVEES
Active Contributor

Join Date: Nov 2008
Posts: 23

Neutral Isolation

03/18/2010 7:02 AM

For Isolating neutral of normal power supply when D.G is running ( Vice versa also ) which is prefered in the below two alternatives.

1. Installing a 4 pole breaker at in the normal incomer as well as D.G incomer.

2. Installing a contactor for both the neutrals so that one remains energised when the other is open.
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wareagle
Guru
United States - Member - New Member

Join Date: Jun 2008
Location: Alabama
Posts: 1604
Good Answers: 63
#1

Re: Neutral Isolation

03/18/2010 6:13 PM

Why would you want to isolate the neutral from the poswer supply?
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msamad
Guru

Join Date: Feb 2009
Location: Houston, USA
Posts: 946
Good Answers: 244
#2
In reply to #1

Re: Neutral Isolation

03/18/2010 10:51 PM

There are some interesting discussions on this topic already available in CR4. These are some of them and you can find more. Hope it will help.

http://cr4.globalspec.com/thread/10957

http://cr4.globalspec.com/thread/42960

http://cr4.globalspec.com/thread/35491

http://cr4.globalspec.com/thread/9225

- MS

__________________
 "All my technical advices in this forum must be consulted with and approved by a local registered professional engineer before implementation" - Mohammed Samad (Linkedin Profile: http://www.linkedin.com/in/msamad)
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