Squirrel Cage Motors with IC411 cooling – compact, robust, and closed

When a compressor motor failed at a Swedish specialty paper mill, Menzel Elektromotoren delivered the urgently needed replacement drive: a 4-pole squirrel cage motor with 710 kW, 6000 V rated voltage and a speed of 1489 min-¹ in IC411, IP55. The original motor was a custom-made unit of a different brand that was no longer available. Menzel therefore modified a stock motor prior to shipment to match the B35 design of the original. This meant construction and installation of a flange as well as manufacturing a mounting option to accommodate a support foot.

In addition, the shaft had to be turned down to 110x210 mm. Menzel engineers carried out the modifications within a week, allowing for a quick replacement of the old motor.

MENZEL MEBKGR-Series:

Voltage ratings: 2 up 13.8 kV

Mounting: IM B3 and IM V1

Degrees of protection: IP 55

Cooling system IC411: Self-surface cooling. Cooling air is blown over the totally enclosed ribbed motor surface by a fan, which is mounted on the shaft.

This project once again confirms Menzel Elektromotoren as a proven partner with short reaction times who helps customers minimize downtime due to failing machines and systems. With more than 20,000 motors of various types in stock (low-voltage, high-voltage, and DC) and the in-house shop readily available to implement custom requirements, the Berlin-based drive technology expert is quick to supply special solutions for a broad range of applications.