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What is vector group? What is meant by DYN11?Why is it needed?
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Answer Posted / sukhdev negi
Abobe two reply explained correctly "what is vector group".
The answer to the last question "why it is needed" is as
follows:-
By virtue of constrction & terminal connections of the
transformer, a phase difference between primary vector &
secondery vector occurs. We need to know the same for the
following reasons:-
1)Matching of vector group is required (to avoid
circulating current/ fault ), when 2 transformer need to be
operate parallal on a common bus/system.
2) to provide transformer differential protection correctly.
| Is This Answer Correct ? | 16 Yes | 11 No |
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