33kv Fault Level Calculation

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grsenthilkumar Participant Join Date: Mar 2013 Posts: 1	33kv Fault Level Calculation 03/08/2013 5:11 AM
	Total capacity of Transformer 2500KVA 33KV/433V X4Nos =10000KVA, So i want HT Side fault level calculation and total Amps.
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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	#1 Re: 33kv fault level calculation 03/08/2013 5:55 AM
	Hire an Electrical Engineer. __________________ "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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nobodysomebody47 Power-User Join Date: Nov 2011 Posts: 171 Good Answers: 1	#2 Re: 33kv fault level calculation 03/08/2013 6:55 AM
	Check these fault calculation Fault calculation
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PeterT Guru Join Date: May 2010 Location: Liverpool, NY Posts: 961 Good Answers: 131	#3 Re: 33kv Fault Level Calculation 03/08/2013 10:05 AM
	Fault level on the high side of the transformers will depend first of all on what the utility can provide, so you have to start there. They will have fault current levels for your connection. If you are downstream from that point in your own (privately-owned) system, you will need to do a system fault analysis to find out what the currents are at the transformers. This will also have to include any contribution from generation that you have on site. As someone else said, hire a qualified electrical engineer to do the analysis for you. __________________ To get the right answers, first you need to ask the right questions.
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ramvinod Guru Join Date: Jun 2007 Location: chennai,India Posts: 592 Good Answers: 19	#4 Re: 33kv Fault Level Calculation 03/09/2013 12:42 AM
	The ht side fault current depends on source fault level indicated by EB grid. This will not have any bearing on your transformer capacity and no of transformers, as long as you do not generate power and export to utility grid.you should find out the fault currents down stream and select devices suitable to withstand such fault currents.also protective relays are to be set based on such fault currents. __________________ Ramesh,Freelance Electrical/automation Consultant
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Anonymous Poster #1	#5 Re: 33kv Fault Level Calculation 04/11/2013 7:05 AM
	HT side is 1750amps at 10MVA
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Anonymous Poster (1); nobodysomebody47 (1); PeterT (1); PWSlack (1); ramvinod (1)

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