MV Neutral Grounding Resistor

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kuppahalli Active Contributor Join Date: Mar 2011 Posts: 22	MV Neutral Grounding Resistor 04/21/2015 6:58 AM
	Hi, Can any one explain how to design NGR for 3x11KV ,2000 KVA DG's which is get synchronized. How to find the NGR temp.withstanding capacity. Regards Murali
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Anonymous Poster #1	#1 Re: MV Neutral Grounding Resistor 04/21/2015 7:42 AM
	http://www.search.ask.com/web?q=how+to+design+NGR+for+3x11KV+%2C2000+KVA+DG%27s+&apn_dtid=%5EOSJ000%5EYY%5EGB&apn_dbr=ie_11.0.9600.17728&psv=&itbv=12.24.1.51&p2=%5EBBE%5EOSJ000%5EYY%5EGB&apn_ptnrs=BBE&o=APN11406&gct=hp&tpid=ORJ-SPE&pf=V7&trgb=IE&pt=tb&apn_uid=9C64FFA6-E1AC-4793-998C-0CE4245EFE9B&tpr=1&doi=2015-04-20&ts=1429616503934
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RAMConsult Guru Join Date: May 2007 Location: NYC metropolitan area. Posts: 3230 Good Answers: 444	#2 Re: MV Neutral Grounding Resistor 04/21/2015 11:01 AM
	Yes, there are people on the web who can, but no one should. You have not provided enough information for anyone to even guide you, and your questions indicate that you are doing your client/boss a disfavor by claiming you have expertise where none is evident to those who do. Any errors that you make will result in downtime, damage to property and possible loss of life, for which you will be personally culpable Use your favorite search engine to find an electrical engineering consultant located near you, pay the price, and sleep well knowing that you did the right thing. __________________ “Tell me and I forget. Teach me and I remember. Involve me and I learn.” Ben Franklin.
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SolarEagle Guru Join Date: Mar 2007 Location: by the beach in Florida Posts: 33392 Good Answers: 1817	#3 Re: MV Neutral Grounding Resistor 04/21/2015 12:09 PM
	Read this.... http://www.worldcat.org/title/industrial-power-systems-data-book/oclc/59713910?referer=brief_results __________________ All living things seek to control their own destiny....this is the purpose of life
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7anoter4 Guru Join Date: Oct 2012 Location: 100 miles North from the World Center Posts: 879 Good Answers: 42	#4 Re: MV Neutral Grounding Resistor 04/21/2015 1:32 PM
	First of all you can study ANSI/IEEE Std 32-1972 or IEC 60076-6[optional] . If you intend to use an auxiliary zig-zag transformer see also[for instance]: https://www.l-3.com/wp-content/uploads/2014/04/Georgia-Tech-Zig-Zag-Grounding-Transformers.pdf And then when you will know what NGR you will need you have to choose it from a suitable manufacturer catalogue. However, it would be better if you could directly phone a suitable manufacturer at first. See[for instance]: www.postglover.com or http://www.cressall.com/neutral-earthing/ or else. __________________ Julius
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