Compact asynchronous AC motors
Performance parameter range for our platform construction design:
Frame size: 90 - 400
Output: 1,5 - 500 kW
Speed: up to 5000 min-1
Voltage: 400 - 690 V
- Compact design for limited installation space
- Dynamically optimized for operation with a variable frequency drive (VFD)
- Wide field-weakening range for variable speeds
- High speeds in short-time operation
- Wide range of mechanical options and accessories
Compact asynchronous AC motors – High performance with minimal installation space
Our compact asynchronous motors combine high performance, flexible integration and a space-saving design. These motors are designed for demanding industrial applications where reliability, efficiency and precision are essential.
A modern asynchronous motor is particularly suitable for applications requiring continuous operation as well as precise control under varying load conditions. In smaller drive systems or specialized applications, a single phase asynchronous motor can also be used to provide reliable and efficient performance.
Thanks to their design for operation with frequency converters, these motors allow flexible speed control and precise adjustment to different operating points. The large field-weakening range enables an extended speed range, which is particularly advantageous for systems with dynamic load profiles, rapid direction changes or variable process requirements.
The electrical and mechanical adaptability of these compact motors makes system integration especially easy. Whether high power density, fast acceleration or project-specific configurations are required, these drive solutions provide reliable performance while minimizing installation space. For smaller industrial systems, a single-phase asynchronous motor may also be integrated where a simpler power supply is required.
Technical characteristics and design features
The compact asynchronous motors cover a power range from 1.5 to 500 kW and are available in frame sizes 90 to 400. Various cooling concepts such as IC 06, IC 37 or IC 01 allow optimal adaptation to the thermal requirements of different installation environments. Protection classes from IP 23 to IP 55 ensure reliable operation even in harsh industrial environments with dust, humidity or splash water.
A key feature is the wide field-weakening range, which significantly extends the usable speed range and increases flexibility in frequency converter operation. Motors with high short-time speed capability are particularly suitable for dynamic applications involving rapid load or direction changes.
Mechanically, the motors can be adapted through various additional components such as forced ventilation units, brakes, encoders or special bearings. Upon request, customized modifications to shaft dimensions, mounting points or protection classes are also possible to ensure seamless integration into machine and plant designs.
Although these motors are primarily designed for industrial multi-phase drive systems, the same operating principles apply to smaller drive solutions such as the single phase asynchronous motor or other types of asynchronous motor used in specialized equipment.
Additional technical data:
Application examples
Power plants
In power plants, AC motors are commonly used for pumps, fans, and auxiliary drives. Their robust design, high efficiency, and reliable continuous operation ensure stable performance even under demanding conditions in critical infrastructure.
Cranes
Crane systems require drives with high torque and precise control. AC motors combined with frequency inverters provide smooth starting behavior, accurate speed regulation, and reliable operation during lifting and positioning tasks.
Test benches
AC motors are well suited for test benches thanks to their precise controllability, dynamic response, and high operational stability. These features allow reproducible test conditions and accurate simulation of torque and speed profiles.
Pump systems
AC motors are ideal for pump systems due to their reliable performance, high efficiency, and stable operation. In combination with a frequency inverter, speed and flow rate can be precisely controlled to meet changing process conditions.
