Electric motor 90 kW, 1490 rpm, 400 V / 690 V, 4LC-280M-4 LV

When selecting a motor for pumps, fans, compressors and larger process units, it is worth choosing a solution that can withstand long-term load, stable mains operation and sensible service intervals. The 4LC-280M-4 model with an output of 90 kW belongs to the speed class with operation in the 1400-1500 rpm range, where it is suitable for technologies requiring smooth torque, good efficiency and predictable starting behaviour. Its design combines an advanced material base with sophisticated winding, which supports long-term operation in industrial use and makes it a suitable IE4 electric motor for operations focused on energy savings.

For operations with low-voltage infrastructure, compliance with the specific supply mode is also important. This motor operates at 400 V / 690 V and achieves a rated speed of 1490 rpm, so it can be integrated into systems where a combination of power and efficient operation is required. An efficiency of 96.1 % and a power factor of 0.88 help to reduce energy losses, which is especially noticeable in the long term under continuous load. The starting torque ratio Tst/Tn 2 and the breakdown torque ratio Tmax/Tn 2.3 give the motor confidence during start-up and when the load varies briefly, while the starting current ratio Ist/In 8.5 must be taken into account when sizing the protection and starting equipment.

Use in drives for light and heavy industry

The motor is suitable for drives in light and heavy industry, where long operation without unnecessary downtime is expected. Thanks to its robust construction and all-cast-iron design, it performs well in aggressive environments where increased dust, moisture or mechanical stress are common. The IEC frame size: 280 mm makes it easier to integrate into existing assemblies and at the same time provides enough space for stable mounting of the rotor system. The noise level of 80 dB(A) is a practical parameter in this power class, especially when designing machine rooms and separate process blocks.

Technical features that support reliable operation

When deployed in a pumping station, air handling system or compressor line, the mechanical design and service accessibility are also decisive. Packing weight of 650 kg confirms a massive construction that contributes to vibration damping and installation stability. Rotor inertia of 2.6 kg*m² affects the starting dynamics and is important when designing drive control and protection. The motor is fitted with DE 6317-C3 and NDE 6317-C3 bearings, which support accurate shaft guidance and longer service life in continuous operations. The cable entries 2-M63X1.5 provide space for practical connection of power cables and the 3 PTC thermistors make it easier to protect the winding against thermal overload.

Dimensions and equipment for installation practice

When planning installation, it is also useful to know the transport and installation data. The package dimensions are 1152*652*846 mm, which is important for storage, handling and preparing dispatch to the workplace. Such data help technicians to prepare lifting equipment and the handling area correctly, especially with larger motors featuring a heavier all-cast-iron body. In practice, this reduces the risk of delays during installation and simplifies coordination between the warehouse, assembly and maintenance.

Industrial applications of the electric motor

This motor is suitable for general industrial applications where a combination of higher efficiency, stable speed and a durable mechanical structure is important. It can be used in pumping systems in water treatment plants, circulation and process pumps, axial and radial fans, screw compressors, mixers, conveyor lines, granulation units, aeration systems, drying equipment, process mixers, belt conveyor drives, cooling circuit pumps and large machines in continuous production. Thanks to the 400 V / 690 V parameters, it is also suitable for operations that need simple integration into existing electrical distribution systems while requiring reliable operation in long working cycles.

From a purchasing perspective, the 4LC-280M-4 model from VYBO Electric is a sensible choice for operations that want to combine operational reliability with an energy-saving solution. VYBO Electric builds on many years of manufacturer experience and in-house development, which is reflected in the structural robustness and emphasis on practical deployment. If you are looking for a motor for demanding technology with a requirement for long service life and stable parameters, please request a quotation.