Electric motor 250 kW, 990 rpm, 400/690 V, 3LC-355L2-6

IE3 efficiency class reduces losses during long-term use and, in this model, creates an ideal balance between purchase price and energy savings. The 3LC-355L2-6 model is built for operations that need stable performance, predictable behaviour and sensible service intervals in both normal and continuous production.

This 6-pole electric motor with an output of 250 kW and a 400/690 V supply operates at a rated speed of 990 rpm, helping maintain smooth starting even in equipment with higher loads. In practice, it is a solution for drive technology where not only energy use but also motor behaviour during starting, loading and long-term operation is monitored.

6-pole electric motor for stable operation of large lines

In large factories and OEM assemblies, the motor’s ability to keep pace with the technology without unnecessary intervention is decisive. Rated current in △ 400 V connection reaches 433 A and in Y 690 V connection 251.01 A, simplifying the design of the switchboard, cable routes and protection. The starting torque ratio of 1.8 supports controlled acceleration, while the starting current ratio of 6.8 helps designers size switching and protective components with greater confidence.

A power factor of 0.87 and efficiency of 95.8% are particularly beneficial where the motor runs in multi-shift operation and every percentage point of losses matters. A noise level of 85 dB(A) remains within a range that can be accounted for in industrial applications when designing a machine room or separate drive. A package weight of 1826 kg and package dimensions of 1607*822*1161 mm are important when planning handling, installation and storage before commissioning.

Durability appreciated in continuous production

The robust cast-iron frame increases assembly rigidity and helps maintain accurate positioning despite vibration, temperature changes and long-term mechanical stress. Reinforced cast-iron bearing shields and reinforced cast-iron feet support mounting stability in applications where the motor depends on rigid installation and minimal deflection. This solution is suitable for operations where service interventions are planned around shutdown windows rather than operator convenience.

Rotor inertia of 13.826 kg/m² helps with drive-dynamics design, especially when the motor works with technology having a higher starting mass. The 2-M63X1.5 cable glands simplify the supply connection and installation in projects where robust cabling and clear wiring are required.

IE3 electric motor for lower losses in continuous operation

The IE3 class delivers the energy discipline valued in large technologies over the long term. This IE3 electric motor is suitable where reducing operating costs cannot be separated from the requirement for continuous performance. In lines, pumps, fans or mixers, the benefit is seen particularly in stable operation and lower thermal loading of the system.

The motor uses DE bearing 6322-C3 and NDE bearing 6322-C3, which is practical for applications with long running hours and an emphasis on bearing-service life. Thousands of installations in industry confirm that this design platform performs well in production plants, technological systems and equipment where reliable continuity of operation is required.

Suitable for integration into machines and technological systems

A three-phase electric motor in this category integrates easily into projects where an OEM manufacturer needs repeatable behaviour and straightforward drive sizing. When designing new assemblies, the combination of output, speed and robust mechanical construction is particularly useful, so the motor is used in production centres, processing lines and auxiliary operations requiring high availability. The pair of 6322-C3 bearings supports a technical solution designed for a long duty cycle and stable operation.

Industrial applications:

• Main agitator drive in a fermentation tank.
• Crusher drive for stone and mineral raw materials.
• Horizontal conveyor belts in packaging lines.
• Large centrifugal pump in a cooling circuit.
• Fan for drying technology in food processing.
• Extruder drive in plastics processing.
• Compressor unit for industrial air.
• Drive for rolling equipment in metallurgy.
• Agitator in a chemical reactor.
• Screw conveyor for bulk materials.
• Main granulator drive in a recycling line.
• Process agitator for paper pulp.

The 3LC-355L2-6 model combines IE3 efficiency class, robust mounting and a design prepared for industrial load. If you need a motor for a project where both long-term operating economy and mechanical reliability are decisive, take advantage of this solution and obtain a drive ready for demanding use.