Physical fractures in rotor bus bars, causing resistance imbalance, arcing, and torque pulsation.

Voltage sags, swells, harmonics, or transients affecting supply stability and motor operational reliability.

Variable frequency drive problems like harmonics, voltage spikes, or carrier frequency distortion affecting motor performance.

Winding insulation breakdown between adjacent coil turns, causing localized heating and current imbalance.

Ratio of real to apparent power; low power factor indicates inefficiency and potential reactive load issues.

Electrical discharge through bearings from induced shaft voltages, causing pitting, fluting, and premature failure.

Insulation breakdown between two phases, causing high fault currents and potential catastrophic motor damage.

Excessive winding or bearing temperatures caused by overload, poor ventilation, or electrical faults, degrading insulation.

Uneven air gap between rotor and stator, causing vibration, noise, and increased mechanical/electrical stress.

Unequal current or voltage across phases, causing overheating, vibration, and reduced motor lifespan.

Insulation failure allowing current to leak from a phase conductor directly to ground, tripping protection.

Weakening of winding insulation over time, increasing risk of short circuits and eventual motor failure.