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What are the reason of unbalanced secondary voltage of HT
transformer 33kv/6.6kv ?
Incomming voltage is balanced.33kv each
secondary voltage 6.6 kv
6.4 kv
6.4 kv
At no load conditions.
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Answer Posted / k.prakashchandra
Probably ,inter -turn short in one phase of the primary if
delta/star .Conduct magnetic balance test (low voltage
excitation test) to ascertain.
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