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WHAT IS THE EFFECT OF UNDER VOLTAGE ‎ON 3 PHASE INDUCTION MOTOR ?‎

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Question ajoutée par Osama Mohamed Abd ElGayed Abd Allah , Assistant Chief Engineer , فندق موفنبيك الدوحة
Date de publication: 2013/05/06
Mohamed Mahmoud
par Mohamed Mahmoud , Electrical Tendering manager , Saudi Electricity Company

this issue depending on the actual absorbed load torque, for example if the load is half of FL motor torque the motor will run w/o problem.
it's like variable voltage control for AC motor.

Ahmed Sabry Omr abdel-atty
par Ahmed Sabry Omr abdel-atty , Electrical ESP & HPS Engineer , Red Sea Oil Services co.

Over Load, because the motor power is constant, if voltage goes down, current goes up.

Omar Hayat
par Omar Hayat , Senior Electrician , Bestway Cement

Motor gives abnormal sound and not work on its full load

dumadi yusuf
par dumadi yusuf , electrical project engineer , PT TITAN CIPTA SINERGY

The effect of under volatge on three phase motor is running not normally because the power motor not optimal so if the load increase can effect to the motor overload (trip)

Alaa Alsouradi
par Alaa Alsouradi , Service Engineer , Rieckermann services Ltd

Over current, because the motor consume the same power

munther khatib
par munther khatib , Senior project manager , Alfanar Construction Company

It causes the currents to be increased which means will heat the winding coils.
a good protection should trip the motor in case of under voltage

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