Electric motor 280 kW, 740 rpm, 400 V / 690 V, 4LC-355LX1-8 LV

Compared with IE2 or IE3 solutions, the 4LC-355LX1-8 delivers greater operating efficiency at 740 rpm and helps reduce energy losses by approximately 15 percent to 20 percent at the same workload. This 280 kW three-phase motor is designed for the 700 to 750 rpm speed range, where the drive is expected to provide stable torque, long-term load handling and precise operation in large technological systems.

IE4 efficiency supports lower operating costs in the production cycle

The super premium efficiency of 95.4 percent reduces losses in the area where, during continuous operation, they are most strongly reflected in energy bills. The power factor of 0.82 and rated current of 521 A at △ 400 V or 302 A at Y 690 V allow the appropriate connection to be selected according to the supply network and the required start-up. Industrial operations with long running hours will also appreciate the starting ratio of 1.6 and pull-out ratio of 2, which support reliable bringing of the load into motion.

Design and protective features increase durability under heavy load

The all-cast-iron design with an IEC 355 mm frame is suitable where vibrations need to be absorbed, shock transmission to the foundations reduced, and high mechanical strength maintained at the same time. DE 6322-C3 and NDE 6322-C3 bearings support stable operation under higher load, while 3 PTC thermistors help protect the winding against thermal overload. The 2-M63X1.5 cable entries make robust connection easier in space-demanding installations.

Operating data important for integration into technology

Noise level of 89 dB(A) should be taken into account when designing the machine room, enclosure or acoustic barriers. A packed weight of 2000 kg confirms the robust construction and at the same time requires proper handling procedures during installation. Rotor inertia and package dimensions are not stated, so when designing, it is recommended to proceed from the installation space, the connection to the foundation and the requirements of the specific unit.

Use in demanding industrial operations

The motor is suitable for low-speed industrial applications where a long duty cycle, smooth start-up and consistent power transmission without frequent shutdowns are important. It is typically used in production lines with high inertia, in large-capacity pumps, in fan and compressor units, in mixers, crushers, conveyors, extruders, homogenising equipment and in auxiliary drives for power and process units. Thanks to its power range, it is also suitable where the drive must cover a high load at a stable speed.

VYBO Electric combines in-house research and development with technical advice to ensure the motor selection is accurate with respect to the supply network, load and starting mode. If you need to verify compatibility with a frequency converter, direct-on-line start or requirements for cooling and mounting arrangement, check whether the motor is suitable for your application and obtain a solution ready for long-term industrial operation.