Nema Mg1-32 Amp- 33

For specific applications, always consult the latest NEMA MG-1 publication (most recent revision) and your motor manufacturer’s technical documentation for exact derating factors and peak voltage limits.

specifically refers to the section of the standard governing Locked-Rotor kVA per Horsepower . In simpler terms, this section classifies motors based on the amount of inrush current they draw when the rotor is stationary (locked) at the moment of startup. nema mg1-32 amp- 33

MG1-33 defines (constant torque vs. variable torque) and introduces two specific performance categories: For specific applications, always consult the latest NEMA

"The induction motor shall be Inverter Duty, conforming to NEMA MG-1, Parts 31, 32, and 33. Specifically, the insulation system shall meet MG1-32.4.1.2 voltage withstand of 1600V peak for 460V systems. The motor’s speed/torque capability shall conform to the AMP-33 profile, providing 100% continuous torque from 33 Hz to 60 Hz, with defined torque reduction below 33 Hz per manufacturer’s data. For operation below 33 Hz at full torque, the motor shall include a forced ventilation blower." MG1-33 defines (constant torque vs