Three-phase electric motor: 3LC-355LX2A-4, 450 kW
| Basic technical data | |
| Motor type | 3LC-355LX2A-4 |
| Rated power (kW) | 450 |
| Frame size (mm) | 355 |
| 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) | 744 |
| Rated current 690 V (A) | 431 |
| Efficiency at 100% load (%) | 96 |
| Efficiency class | IE3 |
| Power factor at 100% load | 0,91 |
| Starting and torque characteristics | |
| Locked-rotor torque ratio (LRT/RLT) | 1,4 |
| Breakdown torque ratio (BDT/RLT) | 2 |
| Locked-rotor current ratio (LRA/RLA) | 7 |
| Rotor moment of inertia (kg·m²) | – |
| 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) | – |
| Package weight (kg) | 2100 |
| Bearings and lubrication | |
| DE/NDE bearings | 6322-C3/6322-C3 |
| Lubricant | Lithium-based grease No. 2 (temperature class) |
| Accessories | |
| 3 x PTC thermistor | |
The 1500 rpm electric motor in the 3LC PRO class delivers an ideal balance between purchase price and energy savings in demanding duty cycles. The 3LC-355LX2A-4 model is designed for factories and OEM assemblies where stable torque, consistent speed and long-term operating discipline without unnecessary downtime are decisive.
Its robust cast-iron frame helps maintain machine geometry even under vibration, impact loads and long shifts. Reinforced cast-iron bearing shields and reinforced cast-iron feet support rigid mounting in technological units where an electric motor is expected to maintain precise positioning, low transmission of resonance and reliable operation in continuous service.
1500 rpm electric motor for stable drive of large production lines
A rated power output of 450 kW and speed of 1485 rpm give this asynchronous electric motor the characteristics required for demanding applications with higher load inertia. In practice, it is used in drives for briquetting presses, calendering lines, large pumping units, exhaust fans, mixing stations, compressor assemblies, granulators, conveyor routes, separators, crushers, rolling mills and process pumps with high continuity requirements.
- A frame size of 355 mm simplifies foundation design and connection to existing drive groups.
- Rated current of 744 A at △ 400V supports precise sizing of switchgear and protection.
- Rated current of 431 A at Y 690V simplifies use in systems with a higher voltage level.
- A starting current ratio of 7 helps when designing starts in networks with higher loads.
- A starting torque ratio of 1.4 and breakdown torque ratio of 2 provide reserve when starting heavy units.
Robust cast-iron frame for industrial environments with vibration and impact loads
A robust cast-iron frame is particularly beneficial where the drive is mounted on steel frames, platforms or in more compact technological enclosures. The cast-iron frame better resists local stress and helps maintain long-term alignment with the gearbox, coupling or driven machine. This is important in operations where misalignment quickly increases bearing wear and shortens service intervals.
The DE bearing 6322-C3 and NDE bearing 6322-C3 support reliable rotor operation under higher thermal and mechanical demands. For a manufacturer with years of experience in three-phase electric motors, this is a solution that meets the long-term requirements of heavy industry and integrators of large technological units.
IE3 efficiency class for lower consumption in continuous operation
IE3 efficiency class helps reduce losses under normal load and during long daily operating periods. In factories where the motor runs for thousands of hours per year, the difference in consumption is reflected in the operating budget much sooner than in smaller applications. Efficiency of 96% and a power factor of 0.91 support economical operation under stable load.
For OEM manufacturers, this electric motor also provides a clearer basis for tender documentation and internal life-cycle calculations. A noise level of 95 dB(A) should be considered as early as the machine-room layout stage, especially in assemblies with multiple drives or enclosed technical areas.
Cable connection prepared for industrial power systems
For power routing, 2-M63X1.5 cable glands are available, simplifying the design of cable entries according to the customer’s specific wiring and installation practice. A packaged weight of 2100 kg requires handling to be planned, while also underlining the robust nature of an assembly intended for heavy technological use.
When selecting a motor for new lines or replacing existing drives, this 1500 rpm electric motor is suitable wherever long service life, stable operation and sensible energy costs are priorities. Take advantage of the offer and add a drive to your project that supports reliable operation even under high process loads.
