Vector Group of a Transformer?

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waseemijaz_89 Member Join Date: Oct 2008 Location: Abu Dhabi, UAE Posts: 6	Vector Group of a Transformer? 02/10/2012 9:23 AM
	I was studying single line diagram. And saw a Vector group written with the transformer it was Dy11. I couldnt understand it I go through internet but my concepts about vector was not clear kindly tell me what is meant by Dy11 Dy1 Yd11 Yd1. __________________ Any intelligent fool can make things bigger and more complex... It takes a touch of genius - and a lot of courage to move in the opposite direction. Albert Einstein
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	Pathfinder Tags: Transformers vector group

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wareagle Guru Join Date: Jun 2008 Location: Alabama Posts: 1604 Good Answers: 63	#1 Re: Vector Group of a Transformer? 02/10/2012 5:17 PM
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Anonymous Poster #1	#2 Re: Vector Group of a Transformer? 02/11/2012 12:10 AM
	How about here http://cr4.globalspec.com/search/sitesearch?do=show&sort=textmatchrank&srch=Vector%20group&srchobjs=t%2Cc&fs=12&order=asc
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WisdomJD Associate Join Date: May 2010 Location: RSA Posts: 33	#3 Re: Vector Group of a Transformer? 02/13/2012 12:48 AM
	Dy11 = Delta connection primary winding: Star connection secondary winding. The difference between a Dy11 (delta winding lags the wye winding by 30 degrees) and a Dy1 (delta winding leads the wye winding by 30 degrees) is a phase shift. One is not better than another in a general sence. Depending on the configuration of the plant and surrounding power lines and transformers, one may be more beneficial than the other by allowing the plant to sync to the grid through multiple sources without first disconnecting. There other two might be the opposite of the first two. #not sure#
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electricalexpert65 Guru Join Date: Oct 2009 Posts: 2061 Good Answers: 169	#4 Re: Vector Group of a Transformer? 02/16/2012 10:02 AM
	If you will send me your mail ID throi this forum's mailbox, I will send you a paper authored by me on the subject.
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waseemijaz_89 Member Join Date: Oct 2008 Location: Abu Dhabi, UAE Posts: 6	#5 In reply to #4 Re: Vector Group of a Transformer? 02/18/2012 8:25 AM
	My feind waiting for your reply CR4 Admin - email address removed From the CR4 Rules: Do not post phone numbers or email addresses. The CR4 Admin will delete all phone numbers and email addresses posted in threads or comments. You can share this information via the CR4 internal messaging system. __________________ Any intelligent fool can make things bigger and more complex... It takes a touch of genius - and a lot of courage to move in the opposite direction. Albert Einstein
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Anonymous Poster (1); electricalexpert65 (1); wareagle (1); waseemijaz_89 (1); WisdomJD (1)

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