Electric motor 355 kW, 2985 rpm, 400 V / 690 V, 4LC-355LX1A-2 LV

For operations with high load, the 4LC-355LX1A-2 model with an output of 355 kW is particularly suitable where stable operation in the range of 2900-3000 rpm, high energy efficiency and durability under long-term load are required. The design is based on the practice of large technological units, where precise drive synchronisation, low operating losses and reliable start-up under load are decisive.

The motor operates as a IE4 electric motor with a focus on 96.7% efficiency and a power factor of 0.91, which helps to reduce energy costs in continuous operation. In combination with an IEC frame size of 355 mm, rated current delta 400 V 581 A and rated current star 690 V 337 A, the solution is ready for demanding drives for light and heavy industry, where precise performance and long service life of components are expected.

Efficiency and torque reserve at start-up

The motor characteristics are suitable for applications where reliable starting is required even under higher mechanical resistance. The starting torque ratio Tst/Tn 1.6, the pull-out torque ratio Tmax/Tn 2.2 and the starting current ratio Ist/In 8.5 provide a clear picture of how the motor behaves under load, switching or short-term process fluctuations. When assessing deployment in lines or assemblies, the noise level of 95 dB(A) is also important and should be taken into account in the design of the space and acoustic measures.

Design features for reliable integration

The assembly uses DE 6319-C3 and NDE 6319-C3 bearings, which supports rotational stability at high speeds and under longer load. The 2-M63X1.5 cable entries make it easier to connect in switchboards and machine assemblies, while the 3 PTC thermistors increase the level of thermal protection in sensitive technological processes. This solution also reflects the in-house development of the VYBO Electric brand and the manufacturer’s experience gained during long-term supply of motors for industrial operations.

Use in the 2900-3000 rpm speed range

This speed class is suitable for direct drives and subsequent mechanical assemblies, where precise maintenance of performance at the rated 2985 rpm is expected. The motor therefore finds application in technological units that need to balance productivity, efficiency and service stability in a single device.

• Main and auxiliary drives in steelworks and metallurgical lines.
• Pump systems with high flow and continuous operation.
• Ventilation and compressor stations in industrial sites.
• Mill, crusher and mixing systems with demanding start-up.
• Chemical and processing industry operations with continuous running.
• Technological assemblies of energy and water management units.
• Large production lines where speed stability and drive efficiency are decisive.

For designers and integrators, it is also important that this is a 2-pole electric motor, which naturally fits applications with higher speeds and a requirement for a direct link between power and process speed. Such a solution makes it easier to size gearboxes, couplings and the power supply infrastructure in both new and modernised operations.

For technically demanding assemblies with an emphasis on service life

When selecting for large factories and manufacturers of technological systems, the combination of efficiency, mechanical reserve and simple integration into existing frames is important. A packing weight of 1900 kg indicates robust workmanship, corresponding to the segment of high-performance industrial motors, where long-term operational reliability is expected. VYBO Electric builds on the development of solutions with premium materials that support stable performance even in environments with high demands on availability.

If you need a motor for a new line or a replacement in an existing system, the 4LC-355LX1A-2 model with an output of 355 kW offers a balanced ratio between efficiency, design reserve and service usability. If you are interested in deployment for a specific project, please request a quotation.