Three-phase electric motor: 3LC-250M-4, 55 kW
| Basic technical data | |
| Motor type | 3LC-250M-4 |
| Rated power (kW) | 55 |
| Frame size (mm) | 250 |
| Number of poles | 4 |
| Rated speed (rpm) | 1485 |
| Frequency (Hz) | 50 |
| Electrical parameters | |
| Rated voltage (V) | 400/690 |
| Connection | △/Y |
| Rated current 400 V (A) | 97,6 |
| Rated current 690 V (A) | 56,58 |
| Efficiency at 100% load (%) | 94,6 |
| Efficiency class | IE3 |
| Power factor at 100% load | 0,86 |
| Starting and torque characteristics | |
| Locked-rotor torque ratio (LRT/RLT) | 2 |
| Breakdown torque ratio (BDT/RLT) | 2,3 |
| Locked-rotor current ratio (LRA/RLA) | 7,4 |
| Rotor moment of inertia (kg·m²) | 0,8294 |
| 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) | 415 |
| Bearings and lubrication | |
| DE/NDE bearings | 6314-C3/6314-C3 |
| Lubricant | Lithium-based grease No. 2 (temperature class) |
| Accessories | |
| 3 x PTC thermistor | |
1500 rpm electric motor for savings in continuous operation
IE3 efficiency class gives the 3LC-250M-4 model a direct promise of savings and value in everyday operation. This 1500 rpm electric motor with a power output of 55 kW is built for light and medium industry, where stable starting, predictable loading and long periods without unplanned downtime are decisive.
In industrial automation environments, it is particularly suitable where the motor runs in repeated cycles and where the difference between losses and savings can already be seen in monthly costs. With a rated speed of 1485 rpm, it is suitable for conveyors, mixing units and pumping assemblies that need smooth and reliable operation.
Robust cast-iron frame for machines that work every day
A robust cast-iron frame increases assembly durability both during installation and under long-term loading. Reinforced cast-iron bearing shields and reinforced cast-iron feet help the motor maintain mounting geometry even under vibration common in OEM machines and smaller technological units.
In practice, the 3LC PRO model performs well in environments where robustness must be combined with economical operation. This makes the three-phase electric motor suitable both for integrators designing compact assemblies and for maintenance teams that prefer a solution with proven service life in real operations. Thousands of industrial installations confirm that this is a proven platform for serial deployment.
IE3 electric motor for lower consumption and reliable starting
The IE3 electric motor delivers super high efficiency that is reflected in consumption under both normal and long-term loading. A rated current of △ 400V 97.6 A, rated current of Y 690V 56.58 A and a power factor of 0.86 give designers more flexibility for precise drive sizing in 400/690 V supply systems.
A starting torque ratio of 2, breakdown torque ratio of 2.3 and starting current ratio of 7.4 simplify the starting of equipment that needs smooth acceleration without unnecessary mechanical stress. Efficiency of 94.6% supports operation where not only performance but also total life-cycle costs are monitored.
Overview of applications for OEM machines and smaller lines
Package dimensions of 1012*582*781 mm and a packaged weight of 415 kg simplify installation and logistics planning. Cable glands 2-M63X1.5 simplify connection in switchgear, while 6314-C3 bearings on both the DE and NDE sides are ready for use in machines where precise and repeatable operation is expected.
- Bulk-material conveyor in a packaging line.
- Pumping assembly for process water.
- Mixer in food production.
- Ventilation unit for a production hall.
- Film winding machine.
- Extraction conveyor in sorting equipment.
- Compressor station for workshop operation.
- Granulator in plastics production.
- Cutting unit in a woodworking machine.
A noise level of 79 dB(A) and rotor inertia of 0.829 kg/m² support use in assemblies where drive dynamics and operating comfort are important. The 3LC-250M-4 is ready for deployment in machines that must operate reliably and economically with minimal maintenance intervention.
Contact us.