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Modular squirrel cage motors

MENZEL modular electric motors with squirrel cage rotors and cooling types IC 611, IC 616 and IC 666 have a compact structure, but are extremely powerful.

Our modular squirrel cage motors are available with cooling types IC 01, IC 06, IC 411, IC 416 and IC 511, or with air-air cooling (IC 611, IC 616 and IC 666) or air-water cooling (IC 81W and IC 86W). In the following article, we would like to present our squirrel cage motors with air-air heat exchangers of cooling types IC 611, IC 616 and IC 666.

MENZEL modular MEBKSL-series electric motors with squirrel cage rotors and air-air cooling are especially powerful and robust. They have welded steel housing with integrated foot adapter plates. This housing design guarantees optimal cooling.

MENZEL MEBKSL motors with air-air heat exchangers are available with axle heights of up to 800 mm, and power ratings of up to 8 MW. They are specially designed for challenging industrial applications. They meet the highest requirements, e.g. as crusher drives or fan drives in the cement industry.

Standard electric motor designs of modular squirrel cage motors (IC 611, IC 616 and IC 666)

  • Construction types: IM B3, IM V1 (special designs possible at any time)
  • Flexible dimensions
  • Protection classes: IP23, IP 55 
  • For grid and inverter operation
  • Voltage: from 380 V to 13,800 V 
  • Shaft height: from 355 to 560 
  • Terminal box: left and/or right 
  • Motor housing: Welded steel
  • Thermal utilization: F/B

As global suppliers of electric motors for industrial plants, we primarily specialize in the production of customer-specific special designs. Ask us – we offer more than just standard solutions!  


The advantages of our modular squirrel cage motors (IC 611, IC 616, IC 666)

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Robust, low-vibration construction

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Good self-cleaning of cooling pipes

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High level of reliability

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Fast delivery times

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Maximum flexibility

Modular electric motors with squirrel cage rotor – Characteristics

In our modular MEBKSL series, we offer electric motors with squirrel cage rotors and flexible design options, in the low-voltage, medium-voltage and high-voltage ranges. The standard basic design of our MPKSL electric motors is identical, but the options for cooling, protection and mounting are manifold.

The electric motors can be adapted for all possible industrial uses. Simultaneously, the standard basic design of our modular squirrel cage motors reduces costs and increases flexibility.

Available nominal voltages of modular motors with squirrel cage rotors

Our modular motors with squirrel cage rotors are available for different nominal voltages. In addition, we can implement all special voltages or deviating voltage tolerances on request.

Nominal voltage at 50 Hz

  • Low voltage: 380 V, 400 V, 500 V, 690 V
  • Medium and high voltage: 3.000 V, 3.300 V, 5.000 V, 5.500 V/ 6.000 V, 6.300 V, 6.600 V, 10.000 V, 10.500 V, 11.000 V

Nominal voltage at 60 Hz

  • Low voltage: 380 V, 400 V, 440 V, 480 V, 500 V, 525 V, 575 V, 690 V
  • Medium and high voltage: 2.300 V, 4.160 V, 6.000 V, 6.600 V, 11.000 V, 13.200 V, 13.800 V

Typical applications of electric motors with air-air heat exchangers (IC 611, IC 616 and IC 666)

Pipe-cooled electric motors with squirrel cage motors consist of:

  • Refiner drives
  • Pump drive
  • Mixer drive
  • Shredder drive
  • Compressor and compactor drives
  • Fan and ventilator drives 

Typical areas of use:

  • Process industry 
  • Cement industry
  • Chemical and petrochemical industry
  • Oil and gas industry
  • Power plants
  • Paper industry
  • Water and wastewater management
  • Steel industry

Electric motors with air-air heat exchangers (IC 611, IC 616 and IC 666)

The most common, or most frequent air-air cooling type is IC 611, which was referred to earlier as IC 0161. In the air-air cooling type IC 611, air from the motor exhaust flows through an attached hood, to the so-called air-heat exchanger. The air-to-air heat exchanger is typically a welded construction, with steel or aluminum cooling pipes. Customer-specific air-air heat exchanger designs can be realized at any time.

The heat generated in the electric motor (stator and rotor) is fed into the air-to-air heat exchanger by an internal fan in the internal circuit. Ambient air from the exterior fan (secondary fan) on the shaft flows through the air-air heat exchanger. The internal air or motor exhaust air flows around the cooling pipes, and is cooled by the secondary air flow within the pipes. A hood with suction opening covers the secondary fan.

Cooling type IC 666

For cooling type IC 666, forced cooling is ensured for the internal and external cooling circuits of the electric motor. There is therefore always a constant cooling air flow in the internal motor and in the external circuit, which may be required for variable-speed operation.

Cooling type IC 616

In electric motors of cooling types IC 616 and IC 611, the inner circuit is ventilated by the laminated core/interior fan. The external airflow is ensured by a separate fan motor, a so-called forced cooling fan. 

Are you looking for modular electric motors with squirrel cage rotors, of cooling types IC 611, IC 616 and IC 666?
MENZEL offers squirrel cage motors of all cooling types – individually and quickly.

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