if 1hp jet motar drop voltage when start from 220v to 120v give the reason and

if 1hp jet motar drop voltage when start from 220v to 120v give the reason and solution.

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if 1hp jet motar drop voltage when start from 220v to 120v give the reason and solution. ..

Answer / k.prakashchandra

It may be due to voltage drop in the line.Momentary drop
while starting only, can be ignored.Connect a load of about
500W and check for voltage drop.If the drop persists then
examine for loose connection/joint which could be any where
from dist transformer to the point of measurement .If you
don't detect any fault still, test the motor.Voltage between
neutral and the earth indicates a loose joint in the neutral.

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