Electric motor 250 kW, 987 rpm, 6000 V, H17R 355-A-6-6 MV

When selecting a drive for a production line, pumping technology or the modernisation of a medium-voltage operation, it is worth opting for a solution that can handle long-term load without compromising stability. H17R 355-A-6-6 with an output of 250 kW operates in the speed class 900-1000 rpm, so it naturally fits applications where smooth power transmission and controlled starting characteristics are important. This three-phase 6 kV motor is designed for reliable operation in an industrial environment where durability, efficiency and safe integration into existing infrastructure are decisive.

High output in the 900-1000 rpm speed class for stable operation

Rated speed of 987 rpm and rated torque of 2419 Nm give this solution a strong basis for technological units with demands for even pull and long-term load. Rated current of 29.9 A and power factor of 0.85 support operation on a 6000 V network with an emphasis on economy, while efficiency of 95.1% helps keep operating losses at a favourable level. In practice, this is particularly appreciated by drives for heavy industry, where not only output is required, but also predictable behaviour under continuous load.

Design that increases reliability in demanding operation

A frame size of 355 mm provides a robust base for deployment in technologically demanding operations, and a weight of 3255 kg confirms the solid construction suitable for continuous load. Insulation class F combined with temperature rise B supports a safe thermal reserve in operating mode, while copper bars in the rotor cage contributes to durability and stable energy transmission. Rotor inertia of 8.7 kg·m² is important in drive design, where both starting and stopping dynamics are monitored.

• DE bearing 6322-C3 increases confidence during long-term operation under load.
• NDE bearing 6322-C3 complements the design with balanced rotor support.
• PT100 winding and bearing sensors help with more accurate temperature monitoring.
• Anti-condensation heater reduces the risk of moisture during shutdown.
• A set of three PTC thermistors supports motor protection when temperature limits are exceeded.

Use in industrial units with medium-voltage infrastructure

This design is suitable for manufacturing plants, technology suppliers and industrial businesses that need to replace an older drive or equip a new line with a reliable source of mechanical energy. The motor is used in compressor assemblies, mills, conveyor systems, mixers, pumps, fans, crushers, winding equipment, rolling technologies, homogenisation lines, separation units, extrusion systems and other operations where a medium-voltage solution with a precisely defined operating characteristic is required.

The benefit of the VYBO Electric brand in long-term use

The VYBO Electric brand draws on many years of experience in the development of electric motors and focuses on premium materials, in-house development and reliable manufacturing discipline. In the case of the H17R Compact PRO-MV model, this means a sensible combination of technical parameters, protective elements and a construction reserve for demanding tasks. If you are looking for a solution for stable operation, high efficiency and safe use in the medium-voltage segment, request a quotation.