Electric motor 280 kW, 990 rpm, 400 V / 690 V, 4LC-355L3-6 LV

Model 4LC-355L3-6 with an output of 280 kW is designed for operations that require high torque, stable engagement and reliable operation within the 900-1000 rpm range. In practice, this is a solution for technological systems where precise drive sizing, long-term mechanical durability and efficient use of energy are required even under variable load. The design from VYBO Electric is based on in-house development and premium materials used, which support safe operation in demanding industrial use.

High efficiency when operating in the 900-1000 rpm range

In the 900-1000 rpm speed class, this drive provides a balanced ratio between output, efficiency and mechanical reserve for technologies with a long operating cycle. The nominal speed of 990 rpm is suitable where smooth energy transfer is required without unnecessary dynamic peaks. An efficiency of 96.3 percent and a power factor of 0.86 help reduce operating losses and keep the electrical network in a more stable mode. As a result, this is an IE4 electric motor that is suitable wherever energy discipline and the long service life of the entire drive are important.

Design features for continuous load

The IEC frame 355 mm provides a solid basis for installation in production lines, technological assemblies and heavy drive units. The nominal current delta 400 V 485 A and the nominal current Y 690 V 281.2 A give designers room to set the supply precisely according to the connection method when designing distribution systems. The starting ratio 1.6, pull-out ratio 2 and starting current 8 support controlled start-up while retaining reserve for working load. It is also important for the designer that the motor uses DE 6322-C3 and NDE 6322-C3 bearings, which increases the prospects for long-term shaft stability and precise rotor seating.

Drives for light and heavy industry with accurate sizing

This 6-pole electric motor is used in applications where consistent performance is expected during extensive operating hours. Noise level 85 dB(A) is a parameter in this power class that needs to be considered when designing the plant room, acoustic enclosures and service access. Packed weight 1900 kg and packed dimensions 1607*822*1161 mm are important when planning handling, transport and installation into the technological assembly. For installation and connection, 2-M63X1.5 cable glands are prepared, which make it easier to route power cables in an industrial environment.

• Pump stations use stable torque and constant speed during long-term media transport.
• Ventilation systems benefit from smooth operation and good efficiency in continuous operation.
• Compressor assemblies gain reserve for start-up and for load during repeated operation.
• Conveyor belts use reliable energy transmission during continuous material flow.
• Mixing and homogenising equipment works with the required mechanical support during changes in resistance.
• Crushing and processing lines gain a drive suitable for demanding cycles in large plants.

Overview of parameter values for design and integration

When designing the system, it is also advisable to allow for accessories in the form of 3 PTC thermistors, which help monitor the thermal condition of the windings and increase motor protection in operation with higher load. Such a solution is especially valuable in production units where emphasis is placed on predictable maintenance and the limitation of unplanned downtime. Thanks to precise workmanship and a focus on reliable operation, this model belongs among drives suitable for modern technologies with high demands on stability, efficiency and service certainty.

If you need a motor for large-scale production, an energy-intensive process or a technological unit with an emphasis on long service life, the 4LC-355L3-6 model with an output of 280 kW is a practical basis for a reliable design. If you are interested in a more precise technical assessment, recommended connection and availability for a specific project, please request a quotation.