Electric motor 90 kW, 990 rpm, 400 V / 690 V, 4LC-315M-6 LV

Motor 4LC-315M-6 with an output of 90 kW is intended for operations where stable torque, high energy efficiency and long-term operational reliability in the speed range 900-1000 rpm are required. In practice, it delivers efficiency which, in the IE4 class, reduces energy losses by approximately 15 % to 20 % compared with IE3, which is reflected in lower consumption and reduced thermal loading of the drive. This three-phase motor is therefore suitable for modernisations where quick payback and stable performance in demanding industrial use are expected.

IE4 efficiency reduces operating losses in everyday use

The design is based on principles used in efficient motors with advanced materials, sophisticated windings and optimised air gaps. As a result, the motor achieves an efficiency of 95.6 % and a power factor of 0.85, which is especially advantageous in production lines with long operating cycles. For technology deliveries and industrial units, this means lower energy losses while maintaining the required starting dynamics.

The shaft height of 315 mm provides a robust basis for use in heavier applications where solid mounting, precise rotor balancing and reliable bearing support are required. A packed weight of 868 kg and packed dimensions of 1412*727*1026 mm make it easier to plan handling, transport and installation space. VYBO Electric uses its own development and long-term experience from large industrial projects in this segment, which is practical when selecting a motor for modernising existing technology.

Operation in the range 900-1000 rpm for stable industrial drives

The speed class 900-1000 rpm suits applications where balanced operation and a good match with the technology operating point are important. Rated speed of 990 rpm is suitable for both direct and geared drives, where smooth starting and consistent performance are preferred. Starting torque with a ratio of Tst/Tn 1.6 and breakdown torque with a ratio of Tmax/Tn 2 provide sufficient reserve for normal load in industrial practice.

The starting current with a ratio of Ist/In 8 must be taken into account when designing protection, switching and power supply sizing. With a rated current of 400 V 158 A and a rated current of Y 690 V 91.6 A, the motor can be integrated into low-voltage infrastructure with an appropriate connection method. Noise level of 83 dB(A) is a parameter that must be included in the workplace design, especially if the motor is located in production halls where acoustic comfort is required.

Bearing arrangement and accessories increase reliability in longer-term operation

Bearing DE 6319-C3 and bearing NDE 6319-C3 support long-term mechanical stability under continuous load. Rotor inertia of 5.4 kg*m² is important in the design of run-up modes and in coordination with frequency control or the equipment process cycle. Cable glands 2-M63X1.5 make cable routing and installation easier in a more space-demanding switchboard or machine layout.

• Pumps benefit from stable operation when conveying liquids in continuous service.
• Fans benefit from balanced performance during long-term operation in HVAC systems.
• Compressors appreciate the robust starting torque during repeated starts.
• Gear drives benefit from 990 rpm at a suitable transmission ratio.
• Agitators and dispersing equipment use stable torque behaviour during process batches.
• Conveyor belts operate reliably under constant load from the material flow.
• Crushers and granulators need a reserve of breakdown torque under variable resistance.
• Textile machines require precise speed control in continuous production.
• Processing lines value the 95.6 % efficiency during long production cycles.
• Water management uses the low-voltage connection 400/690 V in technological pump assemblies.
• Energy modernisations benefit from the IE4 class when replacing older drives.

Accessories in the form of 3 PTC thermistors support thermal monitoring of the winding and increase safety under long-term load. The motor is therefore suitable for production operators who want to combine operational certainty, energy savings and technical reserve in one solution. The electric motor is in stock, so we recommend checking the suitability of the motor for your application and moving forward with rapid deployment without unnecessary delay.