Electric motor 900 kW, 1490 rpm, 400 V / 690 V, H17RL-450X2-4 LV

When selecting a drive for heavy-duty technology, it is worth opting for a solution that can handle long-term load while also leaving room for safe integration into the existing line. The H17RL-450X2-4 is designed precisely for these tasks, where stable performance, reliable starting and the range of 1400-1500 rpm in high-demand continuous operation are decisive. This low-voltage asynchronous electric motor gives technology suppliers and manufacturing companies confidence when modernising drives and replacing older units with higher wear.

Compact power for the 1400-1500 rpm range in continuous operation

At the heart of the solution is a compact design with high power density, which saves space in machines while retaining a reserve for robust processes. The electric motor operates at 900 kW, nominal current at delta 400V reaches 1533 A and at Y 690V 891 A, which makes control panel design and selection of protection devices easier. The nominal speed of 1490 rpm and nominal torque of 5768 Nm create a solid foundation for applications where stable traction is required across the entire working range.

Starting characteristics support reliable starting of heavy assemblies. The starting torque ratio Tst/Tn is 110% and the breakdown torque ratio Tmax/Tn reaches 220%, so the drive can work with industrial inertias without unnecessary stress on the mechanics. The starting current ratio Ist/In at 750% is important when sizing the network and converters, especially when it comes to a three-phase 400/690 V motor in operations with sensitive infrastructure.

Voltage flexibility for industrial electric motors 400/690 V

The design with a frame size of 450 mm makes integration into existing assemblies easier while also respecting mounting compatibility requirements. The motor can be matched with 380 V, 440 V, 500 V, 690 V and 720 V networks, which is practical for operations with different voltage standards or when technology is being gradually updated. That is why it is suitable for industrial electric motors 400/690 V, where emphasis is placed on design flexibility and predictable behaviour under load.

Operational reserve is supported by an efficiency of 96.3% and a power factor of 0.88, which contributes to better energy use during long production cycles. Insulation class F together with temperature rise B increase resistance to thermal stress, while the weight of 5200 kg and the moment of inertia GD2 60.0 kg·m2 reflect a robust mechanical design. The external starting inertia of 589 kg·m2 helps in the design of systems with larger rotating assemblies.

Construction for reliable long-term use and service confidence

Inside the drive, a rotor cage made of copper strip works to support efficient transfer of energy to the load and stable starting behaviour. Bearings DE 6328C3 and NDE 6328C3 are selected for demanding conditions where service life and precise shaft guidance are important. Standard equipment includes a steel cooling cover, reinforced bearings with steel shielding, high-temperature grease in the bearings, a metal terminal box and reinforced bearing shields, all of which support long-term operation in an industrial cycle.

The motor was developed and manufactured for the European industry, especially for Western Europe, where selection is based not only on performance but also on service predictability and a long operational outlook. The modern design created using Hi-TECH technologies is reflected in precise mechanics and an emphasis on repeatable build quality. VYBO Electric builds these solutions on its own research and development, so the result is a drive ready for systematic deployment in environments with higher demands on stability.

Technical solution for production, media transport and heavy assemblies

In practice, this 4-pole electric motor is used in milling lines, pumping stations, compressor assemblies, fan blocks, belt conveyors, stone crushers, mixers, extruders, rolling stands, drying drums, winding equipment, hydrotransport systems and process drives in chemical production. Such deployment will be appreciated by operations that need reliable procurement without improvisation and with a clear service logic.

If long service life under load is the priority, this H17RL Compact PRO is a suitable choice for both modernisations and new projects. Thanks to ISO certificates, VYBO Electric has its manufacturing and quality processes backed by evidence, and when selecting for demanding operations, it is worth requesting a quotation.