Why we Specify Transformer rating 433 V Instead of 415V
?
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Answer Posted / n. ramesh
Power distribution network is supposed to have a voltage
drop of around 4%. As the utility provider has to assure a
three phase voltage of 415 V at consumer's metering point,
the secondary phase to phase voltage of the distribution
transformer is specifed at 4% higher than standard three
phase-phase to voltage of 415 V, which works out to 433 V.
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