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chandru1982b4u
Active Contributor

Join Date: Mar 2011
Location: INDIA
Posts: 10

Neutral Grounding Resistor

11/28/2011 9:40 AM

Whatever the equiments either alternator or transformer above 11000volts potential, star point neutral is earthed through a resistor,and the EF CT is located before the NGR. How does it limits the fault current from other equipments and whats the need for that. Also if one or two syncronised or operating in parallel found only one NGR closed out of 2, whats the need for two NGR's.
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TonyS
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United Kingdom - Member - New Member

Join Date: Aug 2010
Location: Resting under the Major Oak
Posts: 4347
Good Answers: 181
#1

Re: Neutral Grounding Resistor

11/28/2011 9:24 PM

Use the forum search utility. This subject has been covered many times.

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electricalexpert65
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Join Date: Oct 2009
Posts: 2061
Good Answers: 169
#3

Re: Neutral Grounding Resistor

11/29/2011 4:29 AM

Too many questions in one post to answer. I suggest you attend to our two days' training on earthing.
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