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strat
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Join Date: Nov 2010
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3 Winding Vector Group Discussions

11/10/2010 6:04 PM

What are the paractical field issues which may arise by swapping a 3 winding TF with vector group YNyn0d1 with a unit YNyn0d5?

I assume modern day electronic relays can cater for such a change via setting. Are there any significant issues might affect this application?
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Tornado
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Re: 3 Winding Vector Group Discussions

11/10/2010 11:51 PM

If I understand correctly, in the first transformer, the LV lags 30° behind the corresponding HV. In the second, the LV lags 150° behind. The difference is 120°, which would be just like "rolling" the phases in the same rotational order. If it is not paralleled with another transformer, I think it would be okay. But don't take my word for it just yet; I'm hoping for a transformer guru to advise.

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