How to Choose a Surge Arrester?

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Anonymous Poster #1	How to Choose a Surge Arrester? 09/03/2013 10:46 PM
	how to choose correct surge arrester for my 4,16 KV system, 5 KA thank you before???
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Tornado Guru Join Date: May 2009 Location: Richland, WA, USA Posts: 21017 Good Answers: 795	#1 Re: surge arrester 09/03/2013 11:00 PM
	Give a supplier that information; you may already be done. __________________ In vino veritas; in cervisia carmen; in aqua E. coli.
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hariymi Active Contributor Join Date: Aug 2013 Posts: 10	#2 In reply to #1 Re: surge arrester 09/04/2013 12:09 AM
	thank you mr. tornado, but is there any article to choose surge arrester?
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PWSlack Guru Join Date: Jan 2007 Location: In the bothy, 7 chains down the line from Dodman's Lane level crossing, in the nation formerly known as Great Britain. Kettle's on. Posts: 32175 Good Answers: 839	#5 In reply to #2 Re: surge arrester 09/04/2013 3:20 AM
	Yep. Use Google to source local surge arrestor suppliers, then pick up the telephone in response to the numbers listed in the articles. __________________ "Did you get my e-mail?" - "The biggest problem in communication is the illusion that it has taken place" - George Bernard Shaw, 1856
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lyn Guru Join Date: Oct 2008 Posts: 42355 Good Answers: 1693	#3 Re: surge arrester 09/04/2013 12:24 AM
	Ask the question here: GlobalSpec.com They will teach you.
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RAMConsult Guru Join Date: May 2007 Location: NYC metropolitan area. Posts: 3230 Good Answers: 444	#4 Re: surge arrester 09/04/2013 12:25 AM
	Yes, by Googling on the supplier of choice in your location. Their literature will contain answers to questions that you didn't know you needed to ask to ensure that you purchase the correct surge arrester. __________________ “Tell me and I forget. Teach me and I remember. Involve me and I learn.” Ben Franklin.
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Anonymous Poster #1	#6 In reply to #4 Re: surge arrester 09/04/2013 4:25 AM
	oke thank's for the information, that's really helpfull
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electricalexpert65 Guru Join Date: Oct 2009 Posts: 2061 Good Answers: 169	#7 Re: How to Choose a Surge Arrester? 09/04/2013 9:41 AM
	That would depend upon how your system is earthed.
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Anonymous Poster #1	#8 In reply to #7 Re: How to Choose a Surge Arrester? 09/04/2013 10:43 PM
	could you gave me detail explanation about this,thank you before
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electricalexpert65 Guru Join Date: Oct 2009 Posts: 2061 Good Answers: 169	#10 In reply to #8 Re: How to Choose a Surge Arrester? 09/05/2013 3:54 AM
	The rated voltage of a lightning arrestor depends upon the highest system voltage & the factor of earthing. The factor of earthing will depend upon how your system is earthed. It will vary from 0.8 for an effectively earthed system to about 1.7 for an unearthed system.
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electlguru6211 Active Contributor Join Date: Feb 2011 Location: PHL Posts: 12	#13 In reply to #10 Re: How to Choose a Surge Arrester? 09/06/2013 4:08 AM
	I agree with you. Multiplier varies from 0.8 to 1.7 to the system voltage.
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electlguru6211 Active Contributor Join Date: Feb 2011 Location: PHL Posts: 12	#9 Re: How to Choose a Surge Arrester? 09/04/2013 11:53 PM
	Surge arresters are available from suppliers at systems with specific voltage requirement, in either Grounded System or Ungrounded System.
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terrapin Power-User Join Date: Oct 2008 Location: Troy, NY Posts: 122 Good Answers: 4	#11 Re: How to Choose a Surge Arrester? 09/05/2013 8:29 AM
	These pages may help you. http://www.globalspec.com/learnmore/electrical_electronic_components/surge_suppressors/surge_suppressors http://www.globalspec.com/learnmore/electrical_electronic_components/surge_suppressors/transient_voltage_surge_suppressors
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JB of NM Active Contributor Join Date: Apr 2007 Posts: 11 Good Answers: 1	#12 Re: How to Choose a Surge Arrester? 09/05/2013 5:20 PM
	It will be influenced by the transformer configuration, is it a wye or delta? The manufacturer of the arrestor will offer suggestions for a typical case. JB of NM
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Anonymous Poster (2); electlguru6211 (2); electricalexpert65 (2); hariymi (1); JB of NM (1); lyn (1); PWSlack (1); RAMConsult (1); terrapin (1); Tornado (1)

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