High-voltage electric motor 280 kW, 988 rpm, 6 000 V, H17R 355-B-6-6

H17R 355-B-6-6 is built around high power density, which saves space in industrial operation without compromising the requirement for 280 kW. This 900 rpm electric motor is designed for applications where load stability, precise engagement and reasonable operating costs over long production cycles are decisive.

The compact 6 kV motor from the H17R Compact PRO-HV series delivers power that can be accommodated within the space corresponding to frame classes H315 to H560 without unnecessarily expanding the technology. For operators, this means simpler drive design, shorter connections to switchgear and installation solutions, and lower demands on the overall machine layout. In practice, this simplifies integration into new lines as well as modernization of existing units where every metre of technical-room space is monitored.

For use in large factories and OEM assemblies, it is also helpful that the 6000 V electric motor is prepared for robust medium-voltage operation with a rated current of 33,4 A and power factor of 0,85. Efficiency of 95,2 % supports long-term economy and, together with a rated speed of 988 rpm, provides a suitable operating mode for machines requiring calm running without unnecessary fluctuations.

900 rpm electric motor for stable load in continuous operation

This six-pole electric motor is suitable for technologies where steady operation under continuous load is expected and where speed fluctuations complicate the production cycle. Low speed in this range helps keep mechanical stress under control while also simplifying the design of transmissions, couplings and working units. In drives with higher inertia, smoother starting and a more stable transition to the working mode can therefore be achieved.

Rated torque of 2706 Nm is beneficial when starting heavy systems where process resistance must be overcome without disproportionately loading the entire line. A starting torque ratio Tst/Tn of 0,9 % together with a starting current ratio Ist/In of 4,9 % indicates the motor’s starting behaviour, which is suitable for coordinated starting within technological units. A breakdown torque ratio Tmax/Tn of 2 % adds reserve capacity for situations where a short-term increase in resistance must be overcome.

Copper rotor for long service life in a demanding cycle

The copper rotor moves operational reliability in a direction especially valued by maintenance teams and designers in heavy industrial practice. Copper rotor strip reduces losses and better resists thermal stress, helping maintain efficiency under long-term load and limiting the risk of premature ageing of active parts. The result is a design that better withstands repeated starts, long operating intervals and variable process conditions.

Insulation class F combined with temperature rise B creates reserve capacity for operations where heat is not merely a side effect but one of the main maintenance factors. DE bearing 6322-C3 and NDE bearing 6322-C3 support reliable rotor mounting during longer operation, and a weight of 3345 kg corresponds to the robustness required by large technological units. Rotor moment of inertia of 9,2 kg·m² assists in designing drive dynamics where smooth starting is important.

Frequency option for different networks and export assemblies

The frequency selection option expands use in projects prepared for both domestic and foreign operations. The assembly is also suitable for 60 Hz, so an OEM manufacturer does not need to redesign the drive concept from the ground up for export. This shortens preparation time for production batches and simplifies standardization across multiple plants.

In the context of drive technology, this is a solution that integrates more easily into lines requiring continuous production and predictable service interventions. In operations with high diagnostic requirements, additional temperature sensing and anti-condensation protection are also valuable because these elements help keep the motor ready even under less favourable operating conditions.

Use in large technologies where continuous output is decisive

For operators of large factories, it is important that the motor can be integrated into the existing process without complications and that it maintains its output profile over the long term without excessive maintenance intervention. This model from the H17R Compact PRO-HV series is therefore suitable for technologies where a long operating cycle, robust mechanical loading and reliable cooperation with downstream equipment are expected.

• Vertical pumping units for water-management and power-generation systems.

• Fan stations for cooling process halls and power units.

• Crushers for processing ore and aggregate in the mining industry.

• Mills in cement technologies with long operating cycles.

• Compressor assemblies for industrial process-air distribution systems.

• Drives for conveyor lines in metallurgical and material-handling operations.

Operational reliability supported by manufacturing and certification

VYBO Electric builds this model on industrial manufacturing where ISO certificates have a firm place in process control and quality monitoring. Accessories such as 6xPT100 in the winding, 1xPT100 in the NDE bearing, 1xPT100 in the DE bearing, an anti-condensation heater and a 3xPTC thermistor are also available, simplifying monitoring of the temperature regime under demanding conditions.

Solution for OEM projects and modernizations with minimal compromises

OEM manufacturers of large technological units will appreciate that one motor base can be designed for several machine variants while maintaining consistent behaviour in operation. During modernization, the power reserve and design with a shaft height of 355 mm help replace older solutions without unnecessarily rebuilding the entire technology. Such an approach shortens downtime and improves return on investment in every kilowatt-hour the equipment delivers into the process.

If you are looking for a motor for demanding industrial operation, contact us.