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r20705
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Join Date: Sep 2009
Posts: 1

Transformer Vector Group and Generator Voltage

09/15/2009 9:22 PM

My Question is: what is the relation of the vector group of transformer with the generator voltage? Why is it necessary to specify the vector group in ordering a transformer?
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wareagle
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United States - Member - New Member

Join Date: Jun 2008
Location: Alabama
Posts: 1604
Good Answers: 63
#1

Re: what is the relation of the vector group of transformer with the generator volta

09/15/2009 10:22 PM

Check here http://cr4.globalspec.com/search/sitesearch?do=show&sort=textmatchrank&srch=vector%20group%20of%20transformer&srchobjs=t%2Cc&fs=12&order=asc
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G.Swaminathan
Commentator
India - Member - Electrical Energy

Join Date: May 2007
Location: Tamilnadu
Posts: 57
#2

Re: Transformer Vector Group and Generator Voltage

09/17/2009 4:36 AM

The vector group identification is need for the connection of Trasformer in primary side and secondary side. Two option is available one is STAR and another one is DELTA. The windings has to be designed accordingly. That is the reason to identify the vector group. The 1 and 11 is notation for 30degree displacement in +ve and -ve side.
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