Electric motor 560 kW, 1488 rpm, 400 V / 690 V, H17RL 400X1-4 LV

In heavy-duty operation, the key factor is whether the drive maintains the rhythm of production even under long-term load and demanding start-up. The H17RL 400X1-4 therefore fits environments where higher reliability in production operation, smooth running of the technology and a sensible reserve for modernisation are expected. Even in the first considerations for drive design, the 1400-1500 rpm range makes sense, because it is precisely there that it is well suited for pumps, fans and compressor units alike.

The 1400-1500 rpm range for stable running of the technology

Rated speed of 1488 rpm together with an output of 560 kW creates an industrial basis for processes that must not fluctuate when the load changes. The electric motor 400 V / 690 V is suitable in low-voltage infrastructure where start-up, distribution and protection need to be properly designed. In practice, plants looking for an electric motor for universal industrial applications with an emphasis on long-term operation and controlled thermal conditions will appreciate this.

When designing, it is also worth monitoring the torque of 3594 Nm, starting torque at the level of 120% and pull-out torque of 220%. The starting current of 700% requires good coordination with a frequency converter, soft starter or grid protection, especially where the technology involves frequent starts. The power factor of 0.87 and efficiency of 96.3% contribute to rational operation under load, where every kilowatt hour affects operating costs.

Strong cast-iron frame and protection according to the environment

The strong cast-iron frame in a 400 mm size supports mechanical rigidity and long service life even in environments with vibration and varying loads. This approach follows the philosophy with which VYBO Electric develops its professional range for demanding applications. Depending on the surrounding environment, the motor can be adapted with suitable enclosure protection, with available versions IP56, IP65, IP66 and IP67. Such a solution helps in technologies exposed to dust, moisture or increased demands on hygiene and casing.

This series is used in practice as a three-phase motor 400/690 V in operations where precise integration into the existing distribution system is expected. The electric motors are intended for heavy industry and belong to the Heavy Duty process performance class, so they naturally fit conditions where work is carried out under high operational load. At the same time, it is a solution that is being developed and manufactured specifically for European industry, especially for Western Europe.

As part of the standard equipment, the motor includes a steel fan cover, reinforced bearings protected by a steel cover, grease resistant to high temperatures, a metal terminal box with a more robust design and reinforced bearing shields. These elements support the cooling section, bearing arrangement and mounting durability in conditions where dependable deployment in continuous operation is expected from the drive. For technical teams, the weight of 3250 kg, the external starting inertia of 367 kg·m2 and the moment of inertia GD2 of 34.0 kg·m2 are also important, as these values are part of the design of the entire drive system.

Bearing reliability and thermal monitoring during longer operation

Overview of parameters that help with drive design

Both DE and NDE bearings of type 6326C3 create the basis for stable rotor mounting in demanding industrial use. The rotor cage in a solid aluminium design helps with the transfer of mechanical energy in applications where the demands on both start-up and continuous load are significant. Insulation class F together with temperature rise B supports a safe thermal regime during longer operating cycles.

The solution may also include thermal protection in the form of 6x PT100 in the winding, PT100 in the DE and NDE bearing, anti-condensation heating and 3x PTC. Such monitoring is suitable for manufacturing plants, technology suppliers and industrial companies that are dealing with drive modernisation in sensitive operations. In practice, it reduces the risk of unplanned downtime and makes it easier to monitor the condition of the motor during long-term use.

Typical applications include raw water pumping stations, circulating pumps for cooling circuits, blowers for combustion processes, fans for large halls, compressor units, conveyors with high torque, mixers in chemical production, extruders, mineral crushers, granulators, rolling mills, flue gas desulphurisation scrubbers and biomass processing lines. In each of these applications, consistent performance, correctly selected start-up and resistance to operational load are important.

At VYBO Electric, these motors are based on years of experience in the development of industrial drives for companies that work with low-voltage infrastructure and need a reliable replacement or expansion of an existing unit. If you want to include the motor in a specific technology, send us an enquiry and we will prepare a recommendation according to your operating conditions.