How can you test the vector group of power transformers?
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Answer Posted / thowsif_emerson_csm team
A Vector group is the International Electrotechnical
Commission (IEC) method of categorizing the primary and
secondary winding configurations of three-phase
transformers. Within a polyphase system power transformer
it indicates the windings configurations and the difference
in phase angle between them.[1]
The phase windings of a polyphase transformer can be
connected together internally in different configurations,
depending on what characteristics are needed from the
transformer. For example, in a three-phase power system, it
may be necessary to connect a three-wire system to a four-
wire system, or vice versa. Because of this, transformers
are manufactured with a variety of winding configurations
to meet these requirements.
For More Information Log On to:-
http://en.wikipedia.org/wiki/Vector_group
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