while doing the excitation current test on power
transformer what is the value of voltage to be applied?
Nomonal rated voltage or 10% of rated voltage? Is it
necessary to apply on high voltage side?

while doing the excitation current test on power transformer what is the value of voltage to be ap..

Answer / guna

we have to apply three phase voltage only..bcoz,for
transformer rated voltage is 220kv not 230v.we can check in
l.v side also.

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