Asynchronous squirrel cage motor
Our asynchronous squirrel cage motors of cooling types IC 01 and IC 06 (open-circuit ventilation) have very compact dimensions, and are therefore suitable for installation in tight spaces.
MENZEL asynchronous squirrel cage motors (AC motors) are available with various cooling types from open-circuit ventilated (IC 01 + IC 06), to surface-cooled (IC 411 + IC 416), to pipe-cooled (IC 511) or air-air cooled (IC 611 + IC 616 + IC 666) or air-water cooled (IC 81W + IC 86W).
At this point, we would like to present our IC 01 and IC 06 asynchronous squirrel cage motors from the MENZEL MEBKSD (medium and high voltage) and MEBKGD (low voltage) series in more detail. We supply them in a power range of up to 25000kW (25MW).
Our open-circuit ventilated asynchronous squirrel cage motors are part of protection class IP23 and are mainly used for driving compactors and compressors, e.g. as means of cooling and pressure. In order to better meet the requirements of manufacturers of compressors and compactors, and to be able to react quickly when faced with plant stoppages of all kinds, we store the most common designs in our MENZEL central electric motor warehouse.
Standard designs of open-circuit-cooled squirrel cage motors (IC 01 and IC 06)
- Construction type: IM B3, IM V1 (special designs as in IM B35 possible at any time)
- Protection classes: IP23
- For grid and inverter operation
- Voltage: from 380 V to 13,800 V
- Power range: up to 25000 kW (25 MW)
- Frame size: from 200 to 900
- Terminal box: above, rotatable by 4 x 90°, sideways optional
- Motor housing (MEBKGD, low voltage motor): Frame size 200 to 355, gray cast iron
- Motor housing (MEBKSD medium and high voltage motor): frame size from 355, welded steel
- Thermal utilization: F/B
MENZEL specializes in special customized designs of asynchronous squirrel cage motors for industrial application worldwide.
The advantages of open-circuit ventilated squirrel cage motors
High level of efficiency
Small and compact dimensions
Low procurement and operating costs
Good vibration values and low maintenance costs
High load-bearing capacity
Modular, compact design for individual applications
Special designs according to customer requests are possible at any time
Asynchronous squirrel cage motor (IC 01 + IC 06) – Characteristics
Our open-circuit ventilated asynchronous squirrel cage motors of cooling types IC 01 and IC 06 are characterized by a particularly high degree of efficiency and power factor. They have a compact design, small dimensions, and a low weight. At the same time, our IC 01 and IC 06 squirrel cage motors incur low operating and maintenance costs. They are extremely reliable, and have a long lifespan even under high loads. This makes them particularly suitable for implementation in industrial facilities which are difficult to reach and maintain.
Available voltage ratings for IC 01 and IC 06 squirrel cage motors
MENZEL IC 01 and IC 06 asynchronous squirrel cage motors are available for different nominal voltages. All special voltages and deviating voltage tolerances can be realized at any time 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
Areas of application of open-circuit ventilated squirrel cage motors
Open-circuit ventilated squirrel cage motors consist of:
- Compactor drives
- Compressor drives
- Pump drives
- Test field drives
Example reference projects
Motor replacement for rubber kneading machine
Customer: Continental Tires (Deutschland)
In one of Germany’s largest tire production plants, the rubber kneading machine is driven by two slip ring motors that are running at different speeds on one single shaft. A special challenge here is the state of the slip ring body, since one of the motors always has to run at a tensionless state. Menzel was asked to produce a completely interchangeable 10000 V replacement to the old motor, which was originally from the 60s. Since then the new drive is performing to full customer’s satisfaction.
- Type: MEBSSH710-08
- Rated Power: 1200 kW
- Voltage: 10000 V
- Frequency: 50 Hz
- Poles: 8
- Rated Speed: 740 min-1
- Mounting: IM B3
- Protection: IP 55
- Cooling: IC 511
- Weight: 12500 kg
- ´Pieces: 1
The principle of open-circuit cooling in AC squirrel cage motors (IC 01 and IC 06)
In AC squirrel cage motors of cooling type IC 01 (internal/self-cooling), heat is blown out of the motor by means of a fan which is attached to the rotor. The ambient air serves as a coolant. This kind of open-circuit internal cooling is far more intensive than surface cooling. The motor can be constructed smaller. IC 01 motors are primarily suitable for installation in clean, dry conditions.
MENZEL AC squirrel cage motors of cooling type IC 06 (external/internal cooling) have a built-in radial forced cooling fans. The cool air is blown through the interior of the motor by a forced cooling fan. If necessary, the inlet of the forced cooling fan system is fitted with a dust protection filter (e.g. high-speed inverter applications)