— Voltage imbalance.: A 3.5% imbalance will drive a 25% temperature increase
— Low and high voltage
— Single phase of a three-phase machine
— Lightning, surges and switching spikes
— Ungrounded power systems
— Loose electrical connections
— Inverter settings
— Restricted ventilation
— Using the wrong lubricant and the wrong amount
— Overload
— Short-duty cycling
— Rodents and insects
— Moisture
— Improper belt tension
— Vibration
— Misalignment
— Switching power supply driven shaft currents and insulation spikes
— Wrong motor for the application
— Improper preventative maintenance program
— Age
Got questions about your motor longevity? Call CMT.