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a distribution transformer(3 phase)supplying 440volt per
phase.now suppose one of phase voltage(230volt) becomes
zero.what will be the cause ?
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Answer Posted / k.prakashchandra
If other 2 phases are OK ,it may be due to open circuit in
that phase.If other 2 phases show 50% ,it may be due to one
phase missing in the primary of substation power transformer
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