Three-phase electric motor: 3LC-250M-2, 55 kW
| Basic technical data | |
| Motor type | 3LC-250M-2 |
| Rated power (kW) | 55 |
| Frame size (mm) | 250 |
| Number of poles | 2 |
| Rated speed (rpm) | 2980 |
| Frequency (Hz) | 50 |
| Electrical parameters | |
| Rated voltage (V) | 400/690 |
| Connection | △/Y |
| Rated current 400 V (A) | 93,5 |
| Rated current 690 V (A) | 54,20 |
| Efficiency at 100% load (%) | 94,3 |
| Efficiency class | IE3 |
| Power factor at 100% load | 0,9 |
| Starting and torque characteristics | |
| Locked-rotor torque ratio (LRT/RLT) | 2 |
| Breakdown torque ratio (BDT/RLT) | 2,3 |
| Locked-rotor current ratio (LRA/RLA) | 7,7 |
| Rotor moment of inertia (kg·m²) | 0,4638 |
| Applicable standards | |
| Specification | IEC60034-1 |
| Testing | IEC60034-2 |
| Noise | IEC60034-9 |
| Vibration | IEC60034-14 |
| Construction and operating data | |
| Mounting arrangement | IM B3, B5, B35, V1 |
| Duty type | S1 (S2, S3, S4 – S9 optional) |
| Load type | Parabolic or linear curve |
| Degree of protection | IP55 |
| Insulation class | F |
| Temperature rise class | B |
| Cooling method | IC411 |
| Starting method | DOL, VFD, soft starter |
| Direction of rotation | Both |
| Vibration (mm/s) | 2.8 |
| Cable glands | 2-M63X1.5 |
| Operating conditions | |
| Ambient temperature range | -20 to +40°C (-30, +50, +60 optionally) |
| Maximum installation altitude | up to 1000m |
| Packaging and dimensions | |
| Packaging dimensions (mm) | 1012*582*781 |
| Package weight (kg) | 370 |
| Bearings and lubrication | |
| DE/NDE bearings | 6314-C3/6314-C3 |
| Lubricant | Lithium-based grease No. 2 (temperature class) |
| Accessories | |
| 3 x PTC thermistor | |
IE3 efficiency class – Super High Efficiency delivers lower energy demand in practice and a better ratio between power drawn and power delivered. This IE3 electric motor in the 3LC PRO series is designed to provide both savings and value in the 3LC-250M-2 model, making it a good fit for light and medium industry, OEM machines and smaller technological units where stable starting, smooth operation and reasonable running costs matter. As a 3000 rpm electric motor, it is suitable where higher operating dynamics and accurate speed under continuous load are required.
An output of 55 kW, a supply voltage of 400/690 V and a rated speed of 2980 rpm give this three-phase electric motor the capability for reliable operation in systems that run across multiple shifts and cannot afford lengthy downtime. The current load of 93.5 A at △ 400V and 54.2 A at Y 690V is also valuable in practice because it simplifies switchboard design and protection sizing in industrial automation. Rotor inertia of 0.464 kg/m² supports balanced drive acceleration and applications where the motor is frequently started under load.
3000 rpm electric motor for production requiring stable performance
The 3LC PRO model with an IEC frame size of 250 mm meets installation requirements in machines where compact integration and direct compatibility with standard mechanical interfaces are important. A noise level of 89 dB(A) corresponds to operation where both performance and the operator’s working environment must be considered. The robust cast-iron frame – reinforced cast-iron bearing shields and reinforced cast-iron feet increases mechanical reliability under vibration, frequent switching and long-term use in lines that run continuously.
- Mixing and homogenising units in food production.
- Pumping stations for process water in processing plants.
- Ventilation units for paint shops and surface-treatment operations.
- Chamber conveyors in packaging lines.
- Crushers and sorting units in recycling operations.
- Screw conveyors for bulk materials.
- Compressor assemblies for workshop and production compressed-air systems.
- Granulators in plastics processing.
- Rotary feeders in the feed industry.
- Smaller technological units in metalworking operations.
Durable bearings and cable connection for daily operation
Both DE bearing 6314-C3 and NDE bearing 6314-C3 support long service in applications where load, temperature and vibration vary. Cable glands 2-M63X1.5 simplify practical connection at the installation site and make power-cable routing easier in switchboard assemblies. A power factor of 0.9 and an efficiency of 94.3% are also useful design values because they help keep operation economical even during long daily running periods. In practice, this IE3 electric motor builds on thousands of industrial installations, confirming its suitability for standard production scenarios as well as custom machine building.
3LC PRO for OEM machines and smaller technological units
Starting ratio LRT/RLT 2, breakdown ratio BDT/RLT 2.3 and starting current ratio LRA/RLA 7.7 provide designers with data that can be used when selecting circuit protection, frequency converters and mechanical drive connections. This 3000 rpm electric motor is therefore suitable for projects where precise starting, operating reliability and a sensible return on investment are important. If you need a motor for serial production or a specific application in an automated line, contact us.
- Contact us for technical verification of suitability for your application.
Package prepared for installation and rapid deployment
A packaging weight of 370 kg and packaging dimensions of 1012*582*781 mm simplify logistics planning and receipt at the installation site. This three-phase electric motor is therefore suitable for companies that need to add production capacity quickly without time-consuming mechanical modifications. The 3LC-250M-2 model is ready to support applications where precise operation, stable performance and a technical solution capable of long-term industrial service are required every day.