Electric motor 75 kW, 740 rpm, 400 V / 690 V, 4LC-315M-8 LV

A solution with an IE2 or IE3 class already shows higher energy losses during long-term operation, whereas this 4LC-315M-8 with an output of 75 kW in the speed range of 700-750 rpm creates scope for noticeably lower operating costs when modernising the drive. It is a low-voltage asynchronous electric motor designed for stable load, where reliable operation, sensible energy consumption and long-term technical discipline in production are expected.

The model is suitable for the energy-efficient industrial motor segment, where efficiency of 94.2% and a power factor of 0.8 are monitored. When supplied at 400 V, it draws a rated current of 140 A, and at Y 690 V connection 81.2 A. Rated speed of 740 rpm, starting torque ratio Tst/Tn of 1.6, breakdown torque Tmax/Tn of 2 and starting current Ist/In of 7.6 give the motor the prerequisites for more demanding starts with controlled behaviour.

Stable operation in low-speed industrial applications

In environments where load traction and smooth running are decisive, the motor is used in low-speed industrial applications with high operating demands. Rotor inertia of 6.4 kg*m² supports smooth running and noise levels of 82 dB(A) remain within the range of standard heavy industrial equipment. The all-cast iron design increases mechanical resistance to vibration as well as contact with less favourable surroundings.

Connection and mounting solution for modernised lines

Frame size of 315 mm together with 2-M63X1.5 cable entries makes integration into existing assemblies easier. DE bearing 6319-C3 and NDE bearing 6319-C3 create the basis for robust shaft support under long-term operating load. Accessories consisting of 3 PTC thermistors help with winding temperature monitoring and motor protection in technologically sensitive assemblies.

Use in production and process operations

• Pumps in production and process assemblies use stable speed when conveying media.
• Fans in heavy-duty operation benefit from a balanced relationship between power and speed.
• Compressors use the robust design under extended load.
• Crushers and mills benefit from high rated torque at start-up.
• Transport systems in production lines use smooth power transmission.
• Mixing equipment and agitators gain reliable operation in continuous service.

Parameters that support long-term operation

• Rated speed of 740 rpm makes it easier to deploy in applications requiring lower speed and greater pull-up.
• Output of 75 kW provides reserve for process lines with higher load.
• The dimensionally robust package of 1450*750*1040 mm and package weight of 1038 kg correspond to the delivery of a large industrial drive.
• Rotor inertia of 6.4 kg*m² supports a smooth start-up and stability under load changes.
• Efficiency of 94.2% helps to limit unnecessary losses during continuous operation.
• In-house research and development by VYBO Electric is reflected in a professional range for modern industrial deployment.

If you need to verify the suitability of this motor for a specific process assembly, the connection parameters or a replacement for an existing drive, send us a non-binding enquiry and we will be happy to prepare a technical consultation.