Tranformers LV

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jraubsr Power-User Join Date: Sep 2009 Location: Houston, TX Posts: 118	Tranformers LV 09/06/2009 1:16 PM
	Anyone heard of using autotransformers in lieu of distribution transformers for delta-wye distribution? __________________ Thank you for your help - By far the best info site!
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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: Tranformers LV 09/07/2009 1:20 PM
	Do tell! __________________ "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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hien.nguyenquoc Power-User Join Date: Sep 2009 Location: BH, Vietnam Posts: 435 Good Answers: 1	#5 In reply to #1 Re: Tranformers LV 09/07/2009 10:58 PM
	The transformer manufacturer cannot produce an autotransformer with different winding configurations. __________________ Anything that can go wrong, will go wrong
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Anonymous Poster	#2 Re: Tranformers LV 09/07/2009 7:57 PM
	Be real careful, unlike a transformer the primary and secondary of an autotransformer or variac share windings. Example; If used in a step down application and the common winding opens, both sides are at the same potential.
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jraubsr Power-User Join Date: Sep 2009 Location: Houston, TX Posts: 118	#3 In reply to #2 Re: Tranformers LV 09/07/2009 8:11 PM
	Thanks for your input. This would be certainly unusual to do this but I was asked by a collegue of mine and began researching it. Actually, I find no logic in it, it was his statement that supermarkets were doing that. Needless to say, I know more about autotransformers that before and with 45 years experience, I've rarely seen an insulation breakdown on LV transformers when applied in the proper enviorment. Just curious to see if I left a leaf unturned. By the way, I see your a visitor. I just joined this forum (one of many), and like most of us, need an answer now! FYI, I'm impressed by this one as you guys didn't let your shirt tails hit you in the butt in answering. I hope that I can recipricate! My email is jim@seaboardcontrols.com and if I can help you, it would be my profound pleasure! __________________ Thank you for your help - By far the best info site!
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hien.nguyenquoc Power-User Join Date: Sep 2009 Location: BH, Vietnam Posts: 435 Good Answers: 1	#4 Re: Tranformers LV 09/07/2009 10:39 PM
	No. It is impossible. __________________ Anything that can go wrong, will go wrong
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Anonymous Poster (1); hien.nguyenquoc (2); jraubsr (1); PWSlack (1)

You might be interested in: Power Transformers, Distribution Transformers, Transformers

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