At site, we have 30Kw motor (3 phase, 400V,50Hz) and FLC
54A as per the nameplate. At the time of starting it draws
840A instead of 390A (7.2%). As per the data sheet also its
390A starting current. it thru a dol starter from the MCC.
can anyone tell what is the problem in the motor
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Answer Posted / r.v.giribabu
First Check the healthyness of the motor.
1. Check the winding resistence
2. Check insulation resistance using megger.
3. Check the bearing and apply the lubricant as applicable.
4. Check the healthyness of connected load.
Follow above steps adn yoiu will identify the problem.
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