Three-phase electric motor: 3LC-355LX2A-2, 450 kW
| Basic technical data | |
| Motor type | 3LC-355LX2A-2 |
| Rated power (kW) | 450 |
| Frame size (mm) | 355 |
| Number of poles | 2 |
| Rated speed (rpm) | 2985 |
| Frequency (Hz) | 50 |
| Electrical parameters | |
| Rated voltage (V) | 400/690 |
| Connection | △/Y |
| Rated current 400 V (A) | 737 |
| Rated current 690 V (A) | 427 |
| Efficiency at 100% load (%) | 95,8 |
| Efficiency class | IE3 |
| Power factor at 100% load | 0,92 |
| 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 | 6319-C3/6319-C3 |
| Lubricant | Lithium-based grease No. 2 (temperature class) |
| Accessories | |
| 3 x PTC thermistor | |
The 3000 rpm electric motor in the 3LC-355LX2A-2 model delivers an ideal balance between purchase price and energy savings, which is decisive in industrial operation over long-term use. This electric motor with a power output of 450 kW and a supply voltage of 400/690 V is designed for operations where stable running, precise integration into drive systems and reliable performance under continuous load are required.
3000 rpm electric motor for smooth operation of production technologies
The rated speed of 2985 rpm supports use in technological systems that need a fast response and sufficient reserve when the machine starts. In practice, this means fewer limitations when designing drives and easier achievement of the required process dynamics.
A typical asynchronous electric motor in this class is used where long-term stability without unnecessary intervention in operation is important. Three-phase electric motors in this power category often become the basis of main drives because they handle continuous load as well as demanding starting cycles.
Robust cast-iron frame for long service life in heavy-duty operation
The robust cast-iron frame increases the mechanical rigidity of the assembly and helps maintain motor geometry even under vibration, thermal stress and high torque. Reinforced cast-iron bearing shields and reinforced cast-iron feet improve resistance to deformation during installation and operation.
- Resistance to vibration in lines with irregular loads.
- Stable mounting in units with long operating intervals.
- Higher rigidity when mounted on common base frames.
- Better handling of dynamic forces during starting and load changes.
IE3 efficiency class – Super high efficiency in continuous operation
IE3 efficiency class – Super high efficiency helps reduce energy losses in applications where the motor operates under load for a large part of the day. Combined with a power factor of 0.92, it can support more economical operation in large factories as well as for OEM manufacturers of technological units.
Efficiency of 95.8% is particularly important for drives that operate in multi-shift service and accumulate a high annual number of operating hours. An electric motor with this profile is therefore worthwhile wherever energy costs and operational stability are managed within the same budget.
Starting and operating parameters for a stable production-line start
A starting torque ratio of 1.4, breakdown torque ratio of 2 and starting current ratio of 7 give designers a solid basis for sizing power distribution, protective devices and starting methods. A rated current of 737 A at △ 400V and 427 A at Y 690V allows the motor to be incorporated into the power network according to the specific equipment configuration.
A noise level of 95 dB(A) is a parameter that must be considered when designing the machine room, enclosure and protective measures in the workplace. A packaged weight of 2100 kg also confirms the robustness of the assembly, appreciated by operators of large factories and integrators focused on secure machine installation.
Bearing arrangement prepared for long service intervals
The DE bearing 6319-C3 and NDE bearing 6319-C3 are selected for reliable rotor guidance under demanding operating conditions. In projects with long intervals between service shutdowns, this choice is important because it helps maintain running precision and reduce unplanned intervention in the technology.
Use in 10 industrial applications
The 3LC PRO model is suitable for cement-clinker mills, blowers for combustion lines, centrifugal cooling-water pumps, compressed-air compressor stations, mixers for chemical reactors, bulk-material conveyors, plastic-granule extruders, aggregate crushers, rolling mills and dust-extraction fans. In each of these applications, the ability to maintain performance, network stability and process repeatability is decisive.
The manufacturer’s years of experience are reflected in the way the motor combines power, efficiency and mechanical durability without complicating integration into existing drives. For OEM manufacturers of large technological units, this means easier sizing; for operators of large factories, it means more predictable costs over the equipment life cycle.
If you need a motor for high loads, short installation lead times and long-term energy discipline, this 3000 rpm electric motor is ready for industrial use. Take advantage of the offer and obtain a solution that supports stable technology operation as well as lower operating costs.