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Phasor Diagram

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aradhana

aradhana

Electrical
Joined
Nov 24, 2002
Messages
1
Location
IN
Hi ,
This relates to Clarification for phasor diagram.
My query is as follows,


I want the phasor diagram properly displayed according
to the convention of Zigzag Star 0 ,Zigzag Delta 0,
Zigzag Delta 6,Zigzag Star 6,Star Delta +90,Star Delta
-90,Delta Star -90 ,Connection of Three Phase Transformer.
Plz write down the norms & conventions of drawing
Such Phasor Diagram.All notation carry usual and conventional standard meaning.

 
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Aradhana,

With Star / Delta or Delta / Star connected transformers, 90 degrees phase shift is not possible. You can only have +/- 30 or +/- 150 degrees phase shift.

I think J&P Transformer Book is a good reference in this regard.
 
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Applicable information in IEEE C57.12.70, indexed at standards.ieee.org/reading/ieee/std_public/description/ dtransformers/C57.12.70-1978_desc.html and C75.105, indexed at standards.ieee.org/reading/ieee/std_public/description/ dtransformers/C57.105-1978_desc.html
 
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Busbar,

If anyone copies and pastes the IEEE links you provided in your post, they'll obtain a 404 error.... not found.

Reason: you inadvertently included a space as follows...

..... std_public/description/ dtransformers/ .....


Eliminating the space as shown below will make it work.

..... std_public/description/dtransformers/ ....
 
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Sorry--try

standards.ieee.org/reading/ieee/std_public/description/ dtransformers/C57.12.70-1978_desc.html


standards.ieee.org/reading/ieee/std_public/description/ dtransformers/C57.105-1978_desc.html


 
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