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Anonymous Poster

Vector Groups and Single-Phase Transformers

06/24/2009 3:50 AM

Tell me about the vector gruoup of the 6.6/0.215 KV single phase transformer. I read it is "Lio" but i am unable to understand it.

Please define it?
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elect-ok
Power-User

Join Date: Sep 2008
Location: Jakarta, Indonesia
Posts: 104
#1

Re: Vector Group of single phase 6.6/0.215 KV Transformer

06/24/2009 9:51 AM

Dear Guest,

I don't know whether 1 phase transformer has Vector Group or Not.

as long as i know, Vector Group is for three phase transformer. For Example :

DYn11 (Delta on primary side, Wye on secondary side), DYn1..etc

Thanks
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Panta SD
Associate

Join Date: May 2007
Location: Serbia
Posts: 44
Good Answers: 4
#2

Re: Vector Groups and Single-Phase Transformers

06/25/2009 8:20 AM

Hello everyone ,

for single transformer you can make O or 6 hours vector group. It is very important , for example, for connection secondary circuit of current transformer for differential protection of big motor or power transformer .

Good luck !
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shantan
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Join Date: Apr 2012
Posts: 3
#3

Re: Vector Groups and Single-Phase Transformers

04/28/2012 5:29 PM

The primary and secondary voltages will be in phase opposition or in in-phase depending upon the connections.

if they are in phase opposition you can write them as I I 6 or if they are in phase, you should write as I I 0.
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