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manzoor14
Active Contributor

Join Date: Aug 2008
Posts: 19

LV Breaker Testing

09/08/2012 9:04 PM

Hi, Guys

We have an assignment to test LV breaker make Schneider Electric Model NW20H1with logic controller 2.0A draw out type by primary injection. Once the breaker is drawn out, we are unable to manually charge the closing spring.

Can some one guide us that what protection is restricting the charging mechanism. Is it undervoltage protection or some thing else?

If any one encountered similar problem and found the solution. please guide us.

Thanks.
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Pathfinder Tags: LV BREAKER PRIMARY INJECTION TESTING
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Joshi
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Join Date: Oct 2007
Location: India
Posts: 1246
Good Answers: 34
#1

Re: LV BREAKER TESTING

09/08/2012 11:27 PM

Appears like some mechanical deformity of a vital component.
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Afaga
Participant

Join Date: Sep 2012
Posts: 3
#2

Re: LV BREAKER TESTING

09/09/2012 5:40 AM

Does the breaker spring charge electrically? If it does, May be your spring charging lever is faulty.

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TonyS
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United Kingdom - Member - New Member

Join Date: Aug 2010
Location: Resting under the Major Oak
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#3

Re: LV Breaker Testing

09/09/2012 7:03 AM

Contact Schneider, I had a similar problem and the technical team guided me straight to the problem.

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shivaganti
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Join Date: Mar 2007
Location: Bangalore, India
Posts: 141
Good Answers: 1
#4

Re: LV Breaker Testing

09/10/2012 1:19 AM

This is a mechanical issue and should be sorted out with maker.

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