GE Industrial Control Systems GEEP-124-I Copyright 1997,1998 The General Electric Company, USA 29
GEEP-124-I Horizontal Induction Motor
WPI, Antifriction Bearing
Operational Difficulties
WARNING: HIGH VOLTAGE AND
ROTATING PARTS CAN CAUSE SERIOUS INJURY.
THE USE OF ELECTRIC MACHINERY, LIKE ALL
OTHER UTILIZATION OF CONCENTRATED POWER
AND ROTATING PARTS, CAN BE HAZARDOUS.
MAKE CERTAIN THAT THE VOLTAGE IS REMOVED
FROM ALL CIRCUITS AND THAT NO MECHANICAL
PARTS ARE ROTATING. INSTALLATION,
OPERATION AND MAINTENANCE OF ELECTRIC
MACHINERY SHOULD BE PERFORMED BY
QUALIFIED PERSONNEL. FAMILIARIZATION WITH
NEMA PUBLICATION MG-2, SAFETY STANDARDS
FOR CONSTRUCTION AND GUIDE FOR
SELECTION, INSTALLATION AND USE OF
ELECTRIC MOTORS AND GENERATORS, THE
NATIONAL ELECTRICAL CODE AND SOUND
LOCAL PRACTICES IS RECOMMENDED.
TROUBLE - SHOOTING CHART
Trouble Possible Cause Action
Motor will not start Power not connected Connect power to control, and control
to motor. Check contacts.
Low Voltage Check motor nameplate value with bus
voltage.
Wrong control connections Check connections with control wiring
diagram.
Driven machine locked Disconnect motor from load. If motor
starts satisfactorily, check driven
machine.
Open circuit in stator or rotor
winding
Measure/compare winding resistance
of each phase.
Winding grounded Test for grounded winding.
Excessive load torque Check motor capability.
Overload control trip Wait for motor to cool. Try starting
again.
Noise or vibration Motor running single phase Stop motor. Then try to start. It will
not start on single phase. Check for
“Open” in one of the lines or circuits.
Supply bus unbalanced Check balance by measuring current
and voltage in each phase. Correct the
power supply to obtain balanced
voltages.
DLCGEEP-124-I/000, Approved, 2016-11-11, CampinasDM
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