Three-phase electric motor: 3LC-250M-6, 37 kW
| Basic technical data | |
| Motor type | 3LC-250M-6 |
| Rated power (kW) | 37 |
| Frame size (mm) | 250 |
| Number of poles | 6 |
| Rated speed (rpm) | 990 |
| Frequency (Hz) | 50 |
| Electrical parameters | |
| Rated voltage (V) | 400/690 |
| Connection | △/Y |
| Rated current 400 V (A) | 68,1 |
| Rated current 690 V (A) | 39,48 |
| Efficiency at 100% load (%) | 93,3 |
| Efficiency class | IE3 |
| Power factor at 100% load | 0,84 |
| Starting and torque characteristics | |
| Locked-rotor torque ratio (LRT/RLT) | 2 |
| Breakdown torque ratio (BDT/RLT) | 2,1 |
| Locked-rotor current ratio (LRA/RLA) | 7,1 |
| Rotor moment of inertia (kg·m²) | 0,96853 |
| 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) | 397 |
| Bearings and lubrication | |
| DE/NDE bearings | 6314-C3/6314-C3 |
| Lubricant | Lithium-based grease No. 2 (temperature class) |
| Accessories | |
| 3 x PTC thermistor | |
3LC-250M-6 is a six-pole electric motor with a power output of 37 kW, designed to deliver the efficiency and value of the 3LC-250M-6 model in light and medium industry. A rated speed of 990 rpm gives the drive stable characteristics for production lines, conveyors and technological units where predictable starting and long-term operating balance are required.
Six-pole electric motor for operations with smooth loading
In manufacturing, material handling and processing, torque characteristics that support smooth operation without unnecessary mechanical overloading are valued. This asynchronous electric motor is suitable wherever frequent starts, steady loading and long-term service discipline are required.
- Rated current of △ 400V 68.1 A supports direct integration into standard industrial power systems.
- Rated current of Y 690V 39.48 A enables use in corresponding higher-voltage power systems.
- A starting torque ratio of 2 and breakdown torque ratio of 2.1 assist with load starting and short-term dynamic changes.
- A starting current ratio of 7.1 is important when designing protection and sizing switching equipment.
Robust cast-iron frame for mechanically demanding applications
A robust cast-iron frame increases resistance to vibration, impact and long-term frame loading. Reinforced cast-iron bearing shields and reinforced cast-iron feet improve mounting strength, which is beneficial in OEM machines and smaller technological units with limited space for additional modifications.
In practice, this means improved stability in cooling-circuit pumps, screw conveyors, process-tank agitators, extraction fans, compressor stations, belt conveyors, chain conveyors, roller tracks, dosing stations, mixing units, extruders, granulation lines, packaging machines, automatic cutting machines and smaller briquetting presses.
IE3 energy efficiency in continuous operation
IE3 efficiency class supports energy-efficient operation under normal load, which is reflected in consumption during year-round use. As an IE3 electric motor, it helps maintain balanced operating costs wherever the motor is used in multi-shift production and the total number of running hours is decisive.
Efficiency and power factor for switchgear design
Efficiency of 93.3% and a power factor of 0.84 are values that can be used precisely when designing the power supply, compensation and protection of the complete drive.
Noise, bearings and installation details
A noise level of 76 dB(A) is suitable for operations where workplace acoustic load is monitored. DE bearing 6314-C3 and NDE bearing 6314-C3 support reliable rotor mounting, with rotor inertia of 0.969 kg/m².
Cable glands 2-M63X1.5 simplify connection in industrial installations, while package dimensions of 1012*582*781 mm and a packaged weight of 397 kg make receiving, handling and storage easier. More than 15 years of experience in this segment supports both replacement selection and initial installation in new assemblies.
If you need a drive for a production line, machine or smaller technological unit, order 3LC PRO in good time so installation can proceed without delay and without additional structural modifications.
400/690 V supply for industrial connection
The 400/690 V design simplifies integration into existing electrical installations and helps standardise spare parts within the plant. This six-pole electric motor therefore fits operations that need repeatable performance, service availability and minimal downtime.