Electric motor 500 kW, 1485 rpm, 400/690 V, 3LC-355LX2B-4

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3LC-355LX2B-4 delivers 500 kW and 1485 rpm in a 355 mm frame for demanding industrial drives. A robust cast-iron frame with reinforced bearing shields and feet maintains stability under continuous load. More than 15 years of experience in motors and drives. Read More

Electric motor 3LC355LX-4
Power 500 kW
Nominal voltage 400/690 V
Number of poles 4
Speed 1490 rpm
Frame 355 mm
Frame type cast iron

Current availability: in stock

Delivery: Free

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Three-phase electric motor: 3LC-355LX2B-4, 500 kW

Basic technical data
Motor type 3LC-355LX2B-4
Rated power (kW) 500
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) 826
Rated current 690 V (A) 479
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) 2200
Bearings and lubrication
DE/NDE bearings 6322-C3/6322-C3
Lubricant Lithium-based grease No. 2 (temperature class)
Accessories
3 x PTC thermistor

3LC-355LX2B-4 is a 4-pole electric motor with a power output of 500 kW and a rated speed of 1485 rpm, designed for drives where stable operation, economical running and long service life are expected from the machine. In practice, it delivers the efficiency and value of the 3LC-355LX2B-4 model wherever operating costs, 24/7 availability and resistance to long-term loading in industrial production are decisive.

4-pole electric motor for continuous drive technology

A rated voltage of 400/690 V enables flexible connection to standard power systems in large facilities as well as technological units operating with higher loads during starting or variable process loads. A rated current of 826 A at △ 400V and 479 A at Y 690V provides a reliable basis for designing switchgear, protection and cable routes in demanding drive technology.

A starting torque ratio of 1.4, breakdown torque ratio of 2 and starting current ratio of 7 support starting even in applications where the inertia of the technology must be overcome without unnecessary stress on the power network. The IE3 electric motor also helps reduce energy losses during long daily operation and repeated duty cycles.

Robust cast-iron frame for demanding operation

A robust cast-iron frame is designed so the motor can withstand vibration, mechanical stress and long-term installation in assemblies with higher dynamic loading. Reinforced cast-iron bearing shields and reinforced cast-iron feet increase mounting rigidity and support stability in operations where running precision and durability of the entire assembly are monitored.

This construction is particularly beneficial for large factories and OEM manufacturers of large technological units that need to integrate the motor into a robust line without compromises in mechanical mounting reliability. An asynchronous electric motor in this design is better suited to operations requiring long intervals between service interventions and a high degree of repeatability.

IE3 efficiency class for lower consumption during long shifts

IE3 efficiency class is especially important where the motor runs for a large part of the day and every percentage difference in efficiency is reflected in energy bills. Efficiency of 96% and a power factor of 0.91 support economical operation under stable load, which in large production units results in better cost planning and lower thermal stress on the drive.

In projects where return on investment is evaluated, it is important that a 4-pole electric motor with this efficiency helps keep consumption under control without requiring a reduction in process performance. In many operations, this is where the difference becomes clear between a motor that merely drives the machine and one that helps make the entire process more efficient.

Bearing arrangement and service reliability in long-term use

DE bearing 6322-C3 and NDE bearing 6322-C3 are selected for operation where stable rotor mounting and reliable running under heavy load are expected. A packaged weight of 2200 kg reflects the robust construction suitable for production halls, technological units and installation assemblies with a rigid foundation.

A noise level of 95 dB(A) is an important input for workplace design, enclosure planning and overall acoustic hygiene in production. Cable glands 2-M63X1.5 simplify practical routing of the power supply during installation and service intervention, which is particularly appreciated where assembly must be completed within a limited shutdown window.

Typical industrial applications with high demands

The 3LC PRO model is suitable for operations requiring stable transfer of power to the machine technology. Typical applications include:

  • Drive units for aggregate crushers in quarries and raw-material treatment plants.
  • Drives for high-capacity pumps in industrial-water pumping stations.
  • Process agitators in chemical processing under continuous load.
  • Ventilation units for large industrial halls and production lines.
  • Compressor stations for compressed-air distribution in factories.
  • Drives for conveyor routes in metallurgy and material handling.
  • Rolling and winding equipment in metal semi-finished-product manufacturing.

Practical experience for OEM projects and large factories

More than 15 years of experience with motors and drives is reflected above all in the fact that customers receive a solution suitable for real operation, not merely a catalogue item. In OEM projects, this means easier integration into the machine design, predictable electrical parameters and lower risk when commissioning the complete unit.

In large factories, spare-component availability and rapid shutdown planning are also important. This 4-pole electric motor combines power, robust mechanical construction and energy discipline that supports long-term operation without unnecessary intervention.

Ready for deployment without delaying the project

If you need a motor for a technological unit that must operate reliably at high power while keeping operating costs under control, the 3LC-355LX2B-4 is ready to meet these requirements. Order it in good time so you can plan installation, trial operation and line commissioning without unnecessary delay.

Stock and project deliveries should be handled promptly, because every day of downtime matters with drives of this power. Your order provides a motor prepared for demanding industrial use and the precise requirements of your technology.

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