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Drive dimensioning
Dimensioning Torque derating for 4-pole motors
Torque reduction depending on motor frame size takinginto accountthe thermal behaviour when operated with afrequency inverter. With blower M/MN=1 No torque reduction Field weakeningrange at87 Hz 2 4-pole motorsMotor frame size Torque reduction withintegral fan Field weakening range at50 Hz Operation with integral fan and brake >
G-motion consten 7/2006 2-3