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Anonymous Poster

Zigzag Winding in Transformer

06/10/2010 1:34 AM

what are the use of zigzag winding in power x'mer
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dvmdsc
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#1

Re: Zigzag winding in transformer

06/10/2010 2:12 AM

I guess a zigzag winding is a bad winding. You might be interested in a zigzag transformer. Wiki has some on it: copy and paste in your browser please.

http://en.wikipedia.org/wiki/Zigzag_transformer

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electricalexpert65
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#2

Re: Zigzag Winding in Transformer

06/10/2010 9:50 AM

To provide a low impedance circulating path for Zero sequence currents.
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msamad
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#3
In reply to #2

Re: Zigzag Winding in Transformer

06/13/2010 8:31 PM

Zigzag winding is used in grounding (or Earthing) transformer. See the previous thread http://cr4.globalspec.com/thread/36828

- MS

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electricalexpert65
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#5
In reply to #3

Re: Zigzag Winding in Transformer

06/15/2010 3:13 AM

Not necessarily! Have you not heard of Power Transformers with Vector Group Dz & Yz? Wherever there is a need for a low impedance path for zero sequence currents, one can go for a Zig-Zag winding. I have commissioned a number of Dz0 Vector Group Power Transformers of 2 MVA, 11kV/433V Rating.
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dvmdsc
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#4

Re: Zigzag Winding in Transformer

06/14/2010 2:29 AM

*********

I have a serious problem with the comments about this OT.

I have wound many different transformer coils and there is IMHO only one good way to wind it: TO PUT THE WINDINGS CLOSE AND PARALLEL NEXT TO EACH OTHER, so that the shellack insulation gets stressed evenly.

A zigzag winding between it is about a shortcut time bomb.

Unless someone explains clearly that what I do is wrong, these answers do not correspond to a safe reality.

********* If you are talking about ZIG ZAG configurations

****** I don't read it that way in the OT ***** of the coils in a transformator, that is a different story. Correct me if I 'm wrong. Respectfully

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