VFD Overload: Normal Duty vs Heavy Duty Ratings
A field guide to VFD Normal Duty and Heavy Duty overload current ratings — what the percentages mean, why the same frame gives less kW in HD, and how to size...
Soft Starter Motor Protection: Overload, Phase Loss, Stall
How a soft starter's I2t thermal model, phase-loss, phase-sequence, locked-rotor/stall, shorted-SCR and undercurrent functions protect the motor and starter.
How an MPCB Protects a Motor: Thermal and Magnetic Trips
How the adjustable thermal bimetal and fixed magnetic trip inside an MPCB protect a motor branch from overload and short circuit.
