Severe Duty Motors
Innomotics Severe Duty Motors
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. Together with an appropriate frequency converter they provide an outstanding performance and reach an extremely high energy efficiency (IE4 or IE5), also at partial loads. In addition, a large number of the variations available for the line motors (types of construction, motor protection, terminal box position, and options) are also available for the VSD motors.
Synchronous reluctance motor
For particularly energy-efficient operation, with keeping the standard power-shaft height assignment, the best choice is a VSD system with an Innomotics reluctance motor. The reluctance technology, without any rotor winding, ensures particularly high dynamic performance and high efficiencies even in the partial load range, as well as high process quality.Permanent magnet motors
This advanced technology with permanent magnets in the rotor enables not only an outstanding IE5 energy efficiency, but also a high power density. The permanent magnet motor can be even three frame sizes smaller than an induction motor of the same power rating. Furthermore these motors provide a constant torque from the lowest speed and cover high overloads and overspeeds.
Find out more: Permanent Magnet Motors
Your benefits at a glance
Enhanced competitiveness thanks to energy savings and environmental friendliness thanks to reduced carbon emissions.
- Broad range of IE4 class motors:
Availability of Super Premium Efficient motors from 2.2 to 1000 kW in various design variants, greatly exceeding the mandatory regulations. - System efficiency class up to IES5: Guaranteed high efficiency levels at nominal and partial load according to IEC 61800-9-2 in drive systems
with frequency converters.
Greater efficiency and increased flexibility during installation.
- Compact and future-proof design:
For higher power density at comparable performance levels, including Increased Power Line types. - Smaller overall dimensions:
For easy replacement and reduced space requirements. - New terminal box concept:
For greater flexibility during system integration. - Improved operating quality:
For high starting or breakdown torque (TS/TN) or low starting currents (IS/IN). - Flexible range of applications:
For mains and converter capability up to 690 V.
Rugged and robust cast iron housing with optional upgrades.
- Painting system up to CX offshore:
High durability in aggressive atmospheres. - Protection class up to IP66:
Suitability for very dusty or humid environments. - Ambient temperature range from -50 to +60 °C:
Reliable operation under extreme climate conditions.
Reach your next performance level along the entire value-add chain.
- Very short delivery times including options:
Gain time and flexibility in your planning. - More configuration options:
Make use of a wider range of standardized options, for faster quotes and shorter response times. All supported by powerful online tools. - Global reach:
Compliance with the key global certificates and regional requirements.
Technology overview
| Induction (asynchronous) motor | Synchronous reluctance motor | Permanent magnet motor | |
|---|---|---|---|
| Supply type | Direct-on-line, variable speed drive | Variable speed drive | Variable speed drive |
| Power | 0,09 - 1000 kW | 0,55 - 90 kW | 0,37 - 250 kW |
| Voltage | 230 - 690 V | 400 - 690 V | 400 - 690 V |
| Shaft height | 71 - 450 mm | 80 - 225 mm | 71 - 280 mm |
| No. of poles | 2 - 8 | 4 (nominal speed 1500 or 3000 rpm) | 6 - 8 (nominal speed 1500 or 3000 rpm) |
| Efficiency class | IE1 - IE4 | IE4 – IE5 | IE5 |
| Degree of protection | IP55, IP56, IP65, IP66 | IP55, IP56, IP65, IP66 | IP55, IP56, IP65, IP66 |
Induction motors - design variants
SD Add and SD Pro offer global certificates as default. They are therefore ready for use in all major world regions and markets as default. They can be used as standards in the European Union and North America. Furthermore, they are supplied with the electrical values stamped on the rating plate in accordance with IEC and EISA requirements. Like with the Eagle-Line for the smaller shaft heights, the motors represent a NEMA version electrically (mechanically acc. to IEC). In addition, many other country-specific certificates are available.
Technology overview
| SD | SD Add | SD Pro | |
|---|---|---|---|
| Characteristic | Standard motor | Standard motor with low starting current | Standard motor with Premium insulation |
| Shaft height | IE4: 100 - 355 mm IE3: 71 - 355 mm | IE4: 315 - 450 mm IE3: 315 - 450 mm | IE4: 132 - 450 mm IE3: 100 - 450 mm |
| Voltage | Line operation: 220 - 690 V Converter operation: 220 - 480 V | Line operation: 220 - 690 V Converter operation: 220 - 480 V | Line operation: 220 - 690 V Converter operation: 220 - 690 V |
Convincing solutions for your industry
Severe Duty Motors are perfectly suited for use in standard applications such as pumps, fans, compressors, conveyors, winders, mixers, extruders, and cranes in the following industries.
Cement Industry
Increase the efficiency of all the processes in your cement production facility with Innomotics solutions.
Chemical Industry
An integrated portfolio leads to success across the entire life cycle of your plant.
Oil and Gas Industry
The oil and gas industry faces many challenges in exploration, production, transportation, storage, refining and distribution. One of the challenges is to have a highly reliable and safe structure for electrification, automation and digitalization.
Pulp and paper
Innovative, highly efficient, and reliable products and systems for pulp and paper, and tissue plants from your strong technology partner.
More information on Severe Duty Motors
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Performance in the field
The new SD next generation low voltage motor series keeps its promises – and meets exactly the requirements of many customers and their demanding applications.
- Robust design: Innomotics Severe Duty low-voltage motors with sturdy cast iron housing
- Outstanding efficiency: IE4 motors that significantly exceed legal requirements
- Durable quality: Proven, long service life of the motors supplied for maximum reliability
- Innovative motors: First Innomotics SD motors from the 1LE5 series (4-pole, size 400, output 630 kW) - robust, powerful and ideal for extreme conditions
- Optimised design for harsh environments: Housing with high load capacity and high torque output
- Simple system integration: Frequency inverters with integrated control simplify system operation and increase user-friendliness
- Significant energy savings: Annual savings of around €17,000 thanks to modern motor technology
- Higher efficiency: Around 16% more efficient than the motor previously used, ideal for long-term savings
- Significantly reduced electricity costs: Annual savings of around €9,000 per motor
- Outstanding energy efficiency: Optimum performance, especially in partial load operation, thanks to Innomotics synchronous reluctance motor and SINAMICS G120 inverter
- Integrated drive system: Perfect coordination of motor and inverter to maximise efficiency
- Easy commissioning: Quick start thanks to the use of the motor code, which considerably simplifies the process