Three-phase electric motor: 3LC-355LX1A-4, 355 kW
| Basic technical data | |
| Motor type | 3LC-355LX1A-4 |
| Rated power (kW) | 355 |
| Frame size (mm) | 355 |
| Number of poles | 4 |
| Rated speed (rpm) | 1490 |
| Frequency (Hz) | 50 |
| Electrical parameters | |
| Rated voltage (V) | 400/690 |
| Connection | △/Y |
| Rated current 400 V (A) | 593 |
| Rated current 690 V (A) | 344 |
| Efficiency at 100% load (%) | 96 |
| 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) | 2,2 |
| Locked-rotor current ratio (LRA/RLA) | 7,1 |
| Rotor moment of inertia (kg·m²) | 9,143 |
| 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) | 1607*822*1161 |
| Package weight (kg) | 2020 |
| Bearings and lubrication | |
| DE/NDE bearings | 6322-C3/6322-C3 |
| Lubricant | Lithium-based grease No. 2 (temperature class) |
| Accessories | |
| 3 x PTC thermistor | |
The design of the 3LC-355LX1A-4 delivers efficiency and value for operations that need stable performance even under high load. This four-pole electric motor with a power output of 355 kW and a speed of 1490 rpm is designed for applications where operational reliability, service availability and control of energy costs are priorities.
A robust cast-iron frame proves its value both during installation and under long-term stress. Reinforced cast-iron bearing shields and reinforced cast-iron feet help maintain overall rigidity in conditions involving vibration, axial loads and repeated starting. For medium-sized businesses and large factories, this is a construction that better withstands the rhythm of production and reduces the risk of unplanned downtime.
Four-pole electric motor for stable drive performance in production
A four-pole electric motor is suitable wherever power transmission must remain smooth without unnecessary overloading of the drive. A rated current of 593 A at △ 400V and 344 A at Y 690V provides flexibility for different network connections according to the project. A power factor of 0.9 and efficiency of 96% support energy-efficient operation under normal conditions, which is particularly important in three-phase drives with long production cycles.
In practice, it is suitable for the following applications:
- main agitator drive in chemical operations,
- rolling stand in a metallurgical line,
- flue-gas extraction fan,
- cooling-circuit pump in the energy sector,
- aggregate crusher in a quarry,
- granulator in plastics processing,
- compressor station for compressed-air production,
- raw-material conveyor in a cement plant,
- extruder in rubber processing.
Robust cast-iron frame for demanding installation and operating conditions
Industrial practice is often determined by how the motor behaves once bolted to the base frame and after its first months of operation. A packaged weight of 2020 kg, package dimensions of 1607*822*1161 mm and cable glands 2-M63X1.5 simplify planning for handling, cabling and warehouse logistics. In this class, DE bearing 6322-C3 and NDE bearing 6322-C3 are also valued for contributing to stability under continuous load.
In a three-phase electric motor, construction plays a decisive role in transferring torque to the technological drive. A starting torque ratio of 2, breakdown torque ratio of 2.2 and starting current ratio of 7.1 assist when starting equipment with higher rotor inertia of 9.143 kg/m². A noise level of 95 dB(A) is a parameter that must be considered when designing the machine room and acoustic measures.
IE3 for lower consumption in continuous operation
IE3 efficiency class delivers super high efficiency that is particularly evident during long operating hours and stable loading. Combined with a 400/690 V supply, this 400 V electric motor is suitable for projects where return on operating costs is monitored while consistent performance is also required. ISO certificates complement the technical background and support component selection for production units with audit requirements.
The 3LC PRO model in this configuration is suitable for designers, service technicians and operators who need a solution with a longer service horizon. Stock availability and delivery speed also matter when ordering, allowing deployment to be prepared without unnecessary delay. Order the 3LC-355LX1A-4 in good time while it is available for dispatch.
Use in medium-sized plants and heavy industrial operation
This four-pole electric motor is used in pressing lines, separation equipment, mixing stations, heat-exchanger pumps, air-handling systems, conveyor routes, drum sorters, briquetting presses and drives for machines processing bulk materials. In each case, not only performance but also starting behaviour, network loading and bearing behaviour over long operating cycles are monitored.