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lenzeAn innovative design principle for operation on the frequency converter ensures that the new "L-force "three-phase motors Lenze MF can be smaller by up to two sizes than conventional asynchronous motors of the same power. Due to the higher speed of the MF motors, the 1,5 size is sufficient, for example, for 71 kW nominal power - a conventional three-phase motor requires frame size 90. Another advantage: the 1: 24 comparatively well doubled speed range.

The range of motors covers a total power range from 0,55 to 22 kW. The efficiency exceeds IE 2 - not least because the L-force three-phase motor MF operates more efficiently at higher speeds. The more than twice the speed of the motors is compensated by the manufacturer with a correspondingly higher gear ratio. This is possible without an additional stage, because the transmission input pinion is pressed into the motor output shaft by means of a conical compression fit.

In order to fully exploit the advantages of the optimized three-phase motors even in a complete drive system, the MF motors are combined with suitable inverters: The central and decentralized 8400 inverter drives, for example, have a particularly intelligent energy-saving function with their VFCeco mode.


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