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nirav soni
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Join Date: Jan 2008
Location: Gujarat
Posts: 13

vector group

04/06/2008 1:27 AM

hi friends.

transformer vector group

DYn11

what stands for 11 ?
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chaterpilar
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Join Date: Aug 2007
Location: Bhopal India
Posts: 234
Good Answers: 5
#1

Re: vector group

04/06/2008 5:27 AM

Dyn11

Delta winding on HV side and Star(y) on lv side and with neutral (starpoint)

Capital letters = HV

Small letters = lv

11 as in clock hands position.

(11= phase difference between hv & lv is 30 degree(clock designation)

conversely

Dyn1 would be -30 deg between hv and lv

Cheers.

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Anonymous Poster
#5
In reply to #1

Re: vector group

04/30/2008 5:50 AM

Hi
capital letters stand for Primary winding

small letters stand for Sec wdg.
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V.I.Abraham
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Safety - ESD - New Member India - Member - New Member Engineering Fields - Energy Engineering - New Member

Join Date: May 2007
Location: Pune , India
Posts: 875
Good Answers: 42
#2

Re: vector group

04/06/2008 8:47 AM

Hi Soni,

"chaterpilar" has replied good. further read the link below :

http://en.wikipedia.org/wiki/Vector_group
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Abu Khansa
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Join Date: Oct 2006
Location: Indonesia
Posts: 102
#3

Re: vector group

04/07/2008 10:43 PM

Beautiful clock view shown by chaterpilar.

11 mean LV side lag behind HV in 330o or LV lead HV by 30o

1 hour represented 30o displacement between HV and LV.

So, Dyn1 = LV lag HV 30o

Dyn2 = LV lag HV 60o (i.e 2*30o)

Dyn3 = LV lag HV 90o (i.e 3*30o)

Now you know, Dyn5 = ..................?

Dyn11 = .................? etc

cheers
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dineshbe
Member

Join Date: Apr 2008
Location: India
Posts: 9
#4
In reply to #3

Re: vector group

04/30/2008 5:20 AM

hello sir,

thanks for your nice explanation about transformer vector group, its very use full to me.

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recham
Participant

Join Date: May 2008
Posts: 1
#6

Re: vector group

05/13/2008 8:39 AM

Thanks Very useful!!
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Abu Khansa (1); Anonymous Poster (1); chaterpilar (1); dineshbe (1); recham (1); V.I.Abraham (1)

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