What is mean by vector group? For what purposes we doing
vector group test in transformers?
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Answer Posted / satya dev
In the 3 phase AC systems all the phases are having Phase
displacement called electrical Angle.In the case of
transformers the windings are connnected in special Faison
called Vector group. DY11, DYn11 are the vector gruops
which are generally used in India.Testing of vector group
is only to test the electrical of Connected Phases in the
Transformers.
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