Electric motor 110 kW, 740 rpm, 400 V / 690 V, 4LC-315L2-8 LV

When selecting a drive for production technology, we recommend starting with the operating point, load and required efficiency. The 4LC-315L2-8 model with an output of 110 kW belongs to the 700-750 rpm speed class and is suitable where operation must reliably transmit torque at low speed. At the same time, IE4 efficiency helps reduce energy losses by approximately 15 % to 20 % compared with IE3, which is particularly noticeable during long-term operation in production plants with high utilisation.

Higher efficiency in long-term operation in the 700-750 rpm range

The design of this series is focused on economical and stable operation in applications where continuous load and precisely controlled output are expected. The three-phase motor with a rated voltage of 400 V in delta connection and 690 V in Y connection provides flexibility in switchboard design as well as integration into existing low-voltage infrastructure. The rated current is 202 A at 400 V and 117.1 A at 690 V, while the power factor of 0.81 supports operation in assemblies where sensible use of the grid is important.

The starting torque ratio Tst/Tn 1.6 and the breakdown torque Tmax/Tn 2 show that the motor is ready for applications with controlled starting and the need for sufficient reserve when the load changes. The starting current ratio Ist/In 7.7 should be taken into account when sizing protection and switching components, especially in operations with a more sensitive grid or with several drives starting at the same time. The noise level of 82 dB(A) corresponds to robust industrial deployment, where acoustics are addressed within the entire technological unit.

Where it is used in modernisation and manufacturing

The motor is suitable for low-speed industrial applications that require high reliability, long service intervals and resistance to demanding operating conditions. Super premium efficiency is an advantage wherever energy costs, line availability and the return on drive modernisation are monitored. The all-cast-iron design with a 315 mm frame supports mechanical rigidity and handles vibration better, which is important during long-term operation in production units.

• Pumps benefit from stable speeds when conveying media in process lines.
• Fans benefit from a balanced relationship between output, current and speed in continuous operation.
• Compressors gain a robust drive with torque reserve for starts and pressure changes.
• Crushers operate with high mechanical resistance under impact loading from material.
• Stirrers benefit from smooth transmission of torque during technological mixing.
• Transport lines use reliable operation during material movement in production plants.
• Reduction drives rely on suitable speeds for heavy-duty operating modes.
• Technological units in the chemical and processing industries appreciate resistance to corrosion and vibration.

Design features for easier integration

The packaging weight of 1275 kg and packaging dimensions of 1450*750*1040 mm require proper handling during receipt and installation. The rotor inertia of 8.3 kg*m² helps with evaluating the dynamics of starting and braking in the control system. The 2-M63X1.5 cable glands provide space for quality connection of power cables, and 3 PTC thermistors increase safety when monitoring winding temperature. The DE bearing 6319-C3 and the NDE bearing 6319-C3 support long-term mechanical stability with a suitable lubrication and service regime.

Technical support for a reliable choice

When designing a new assembly or replacing an older drive, it is worth assessing compatibility with the load, the start method and the expected operating hours. VYBO Electric combines in-house research and development with technical advice, which makes precise deployment easier in existing operations as well as in new projects. If you need to verify whether this model matches your application, check the suitability of the motor for your application.