Electric motor 315 kW, 740 rpm, 400 V / 690 V, 4LC-355LX2A-8 LV

Variable load, long shifts and high demands on drive continuity quickly increase energy costs, so it is important to have a motor that maintains efficiency even in a demanding cycle. The 4LC-355LX2A-8 model with an output of 315 kW, intended for the speed range of 700-750 rpm, delivers operation that helps reduce losses and supports major cost savings in large technological assemblies. It is a low-voltage asynchronous electric motor that is suitable where reliable operation, high availability and controlled thermal loading are expected.

Operating efficiency in IE4 class under continuous load

The motor design is based on a centre height of 355 mm and on the parametric balance between torque, current and efficiency. An efficiency value of 95.4 % together with a power factor of 0.82 supports economical operation in systems where every percentage point of loss output is monitored. In practice, this is particularly appreciated by factories that need an energy-saving industrial motor for long-term use without unnecessary reserves in consumption.

The IE4 class at this power level uses advanced materials, sophisticated windings and optimised air gaps, which is reflected in a stable load curve. The rated current delta 400 V is 586 A and the rated current star 690 V reaches 340 A, so the motor is ready for integration into distribution systems according to the voltage level of the equipment. For a drive requiring lower losses and precisely controlled output, this is a solution with a clear technical and operational benefit.

Parameters that help with drive design

The starting ratio Tst/Tn 1.6 and the breakdown ratio Tmax/Tn 2 show that the motor is suitable for applications where a controlled start-up and sufficient torque reserve at start are required. The starting current Ist/In 7.8 must be taken into account when designing switching and protection, especially in larger lines with a shared power supply. Noise of 89 dB(A) corresponds to robust industrial use and the package weight of 2100 kg is important for handling, transport and installation planning.

For integration into machine assemblies, the equipment details are also important. 2-M63X1.5 cable glands make it easier to route the supply cables, the DE 6322-C3 bearing and the NDE 6322-C3 bearing support operation under high load, and 3 PTC thermistors increase winding temperature control. These elements help when designing drives where reliable starting, protection and long service life are emphasised.

Use in demanding industrial operations

• Pumps benefit from stable operation when conveying media in large technological circuits.
• Fans gain from a balanced ratio of output and speed during long-term air circulation.
• Compressors obtain a reliable source of output for pressure and process applications.
• Conveyor systems benefit from smooth energy transfer in production lines.
• Grinding mills and crushers use a robust torque characteristic during demanding start-up.
• Extruders benefit from a stable supply of output during continuous material processing.
• Agitators operate with consistent torque in process tanks.
• Technological units in large factories benefit from predictable integration into control systems.

VYBO Electric supplies solutions from a professional range that combine in-house development with premium materials and experience from industrial applications. If you need a motor for reliable operation in systems with high efficiency demands, send us a non-binding enquiry and we will prepare a solution for your application.