Electric motor 450 kW, 1490 rpm, 400 V / 690 V, 4LC-355LX2A-4 LV

High losses in continuous operation can quickly increase both costs and cooling demands in a plant. The 4LC-355LX2A-4 model with an output of 450 kW and a speed range of 1400-1500 rpm is designed to reduce drive energy losses under heavy load and deliver noticeable savings over the long term. It is a low-voltage asynchronous electric motor for applications where high continuity and predictable behaviour under changing load are required.

The design with a centre height of 355 mm and an efficiency of 96.9 % supports efficient operation even in energy-intensive lines. The power factor of 0.9 helps optimise the operation of the power supply system, while the rated current at triangle 400 V reaches 744 A and at Y 690 V 431 A. For integrators, the mechanical reserve is also important, as confirmed by the starting torque ratio Tst/Tn 1.8 and the breakdown torque ratio Tmax/Tn 2.2.

This 4-pole electric motor is suitable where smooth starting, stable speed of 1490 rpm and long bearing life are required. The starting current ratio Ist/In 8.5 must be taken into account when designing the power supply and switching equipment, but it also provides a reliable start for large rotating systems. Noise level of 92 dB(A) is a parameter that must be considered when designing acoustic measures in the hall.

Operation in the 1400-1500 rpm speed range for large drives

In this speed range, the motor is suitable for pumps, compressors and process units that require stable torque and precise power control. For projects focused on long-term efficiency, energy-saving industrial motors in IE4 efficiency class are a sensible choice, especially if the entire system is to run in continuous mode.

Mechanical equipment for integration into industrial assemblies

The motor is fitted with 6322-C3 bearings on both the DE and NDE sides, which supports robust rotor mounting under higher load. 2-M63X1.5 cable glands make it easier to route power cables and signal circuits cleanly and safely. The packing weight of 2200 kg confirms that this is equipment intended for heavy industrial use, where solid mounting and a carefully prepared handling plan are expected.

Ready for monitoring and diagnostics

Accessories in the form of 3 PTC thermistors allow better monitoring of the thermal condition of the winding and increase safety when integrating into control systems. This solution is practical in applications where protection under long-term load is required while unplanned downtime is minimised.

Industrial applications of the electric motor

• Main pumping stations in water management.
• Compressor units in the chemical and processing industry.
• Ventilation and extraction systems with high continuous output.
• Conveyor drive in mining and quarrying operations.
• Mills and crushers in materials processing.
• Units for cement plants and lime works.
• Extruders and mixing lines in production technology.
• Rotary dryers and cooling drums.
• Power stations with auxiliary drives.
• Machine assemblies for heavy metallurgical processes.
• Pumping and mixing systems in the paper industry.
• Large process lines with permanent load.
• Process nodes requiring high efficiency and temperature monitoring.

VYBO Electric supplies a professional range designed for demanding industrial conditions and long-term reliability. If you are planning a drive modernisation or a new installation in operation, send us a non-binding enquiry and we will prepare a solution according to your technical requirements.