VFD-Driven Motors Are at Risk of Electrical Bearing Damage!
Motors operated by variable frequency drives (VFD) are vulnerable to VFD-induced shaft voltage and bearing currents that can cause premature bearing failure – often in as little as 3 months!
VFDs induce destructive shaft voltage that can discharge through motor bearings, burning bearing grease and reducing its effectiveness. Through electrical discharge machining (EDM), these discharges can also cause pitting, frosting, and fluting damage to the motor’s bearings and eventual bearing failure. The result is costly repairs, downtime, and lost production.
