The severe duty motors with their robust cast iron housing are the first choice for all major applications in normal industrial environments, as well as in harsh environments. They are very reliable even under extreme conditions, versatile, extremely compact and easy to handle. Very high efficiencies ensure economical and sustainable operation.
In addition to induction (asynchronous) motors for direct-on-line and converter operation, two different synchronous motor technologies are available. These need to be used always with a frequency converter (VSD).
Direct on line, converter capable motors
The proven induction motors from the Severe Duty Motors are optimized for line operation, and are available with efficiency classes up to IE4. The IE4 class became mandatory since July 2023 for safe area motors with nominal power 75 – 200 kW and 2 – 6 poles, placed on the market in the European Economic Area.
However the Innomotics SD portfolio is greatly exceeding these regulations by offering IE4 designs from 2.2 to 1000 kW, up to 8 poles. Additional catalog variants are available, such as the highly compact Increased Power Line motors, featuring one step smaller shaft height. Find more information about the Innomotics portfolio in the IE4 class below.
The grid-optimized motors can also be operated with converters.
Converter-optimized motors
The variable-speed-drive motors are based on the platform of the Severe Duty Motors. The design corresponds to the line motors – the mechanical parts are identical. However, instead of the squirrel cage induction rotor, they utilize one of the two available synchronous technologies.