Why and which type of tertiary winding is used in most of
the power transformer?
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Answer Posted / iamdon
The primary and secondary windings are used for normal
voltage/current transformation where as the tertiary
winding is used for following special purposes
1)Supply to substation auxiliaries.
2)Connecting static capacitors/synchronous condenser etc
The tertiary winding is connected in delta to allow the
flow of zero sequence current in the tertiary loop in the
case of unbalance.
Author:arbelectbit@yahoo.com
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