High-voltage electric motor 355 kW, 1487 rpm, 6 000 V, H17R-355-A-4-6

In metallurgical operations, pumping stations and technological systems with continuous load, what matters is the ability of the drive to maintain stable output with sensible energy consumption. H17R-355-A-4-6 is designed as a 1500 rpm electric motor for applications where energy efficiency, operating reliability and a long service interval are monitored. With an output of 355 kW, it provides reserve for demanding starting and continuous operating modes common in 6 kV industrial drives.

This design combines IE4 Super Premium efficiency with operating behaviour that reduces losses during long hours of running. For operators of large factories, this means lower loading of switchboards, better use of electrical energy and more precise cost planning in continuous production. In practice, it is a solution that supports line modernisation without unnecessary oversizing of the drive.

1500 rpm electric motor for long-term load in industrial operations

The four-pole electric motor operates at a rated speed of 1487 rpm, helping maintain suitable dynamics for applications with high inertia or a requirement for smooth torque transfer. Rated torque of 2280 Nm supports both starting and steady-state operation in technologies where changes in speed have only a limited effect on the process. For OEM manufacturers of large assemblies, compatibility with a high-voltage electric motor that can be integrated without unnecessary structural modifications is also important.

Compact 6 kV motor with reserve for installation space

The 355 mm frame size provides a balance between output and footprint. The design allows use where the motor must deliver full output in H315 to H560 frames while installation space remains limited. From a design perspective, the 6000 V motor is suitable for assemblies requiring firm integration into existing energy infrastructure while also considering easier handling during replacement or maintenance.

The bearing arrangement using 6322-C3 types on both the DE and NDE sides improves the conditions for reliable operation over long working cycles. Copper strip in the rotor cage supports robust behaviour under load and contributes to more precise energy transfer into the mechanical section of the machine. For operations with frequent thermal changes, accessories in the form of PT100 sensors, thermistors and an anti-condensation heater are also available, helping monitor motor condition during shutdowns and start-up.

Durability suited to demanding production conditions

For environments with dust, moisture or increased installation demands, special protection can be selected according to operating requirements. Available IP56, IP65, IP66 and IP67 variants allow the motor to be adapted to the specific production regime without compromising protection. This is particularly important where equipment is located close to process media or in areas with limited service access.

More precise maintenance and operating planning

Rated current of 40,9 A, a power factor of 0,88 and efficiency of 95,4 % provide operating data that translate well into switchboard design and the energy balance of the entire system. Temperature rise B and insulation class F support long-term load in line with industrial practice where stable operation throughout entire production shifts is expected. A weight of 3220 kg and rotor moment of inertia of 6,5 kg·m² must be considered when designing the foundation and sizing the starting process.

VYBO Electric builds on years of experience developing large electric motors for industrial deployment, which is reflected in the design details and service logic of the entire H17R Compact PRO-HV series.

Typical use in heavy production and technology

H17R-355-A-4-6 is used in the following areas:

• Drive for a high-capacity fan in a steelworks.
• Compressor unit for process gas in chemical production.
• Cooling-water pump in an energy unit.
• Final drive of a raw-material conveyor in a cement plant.
• Milling equipment in mineral processing.
• Extractor in a paper machine with continuous operation.
• Mixer in the process of blending industrial suspensions.

For large factories and OEM manufacturers of technological assemblies alike, this model provides a solution that supports long-term operation, simplifies energy planning and increases service predictability. If the drive is to be prepared for deployment under demanding conditions, order it while there is still time to plan both integration and the delivery date precisely.

Integration into high-voltage assemblies without unnecessary modifications

When designing new lines and modernising existing technologies, the motor’s high-torque, compact design helps. Clear integration into the power supply, optional additional temperature sensing and protection selection according to the environment make it easier to design operation with fewer subsequent interventions. This approach is suitable where long service life, stable operation and controllable costs over the entire life cycle are expected from the drive.

Energy efficiency of H17R Compact PRO-HV in practice

For companies that monitor electricity consumption across entire operations, it is important that efficiency is reflected not only in the catalogue but in actual equipment operation. Under higher loads and during long operating intervals, savings are distributed across every hour worked, which is decisive in heavy industry. The 1500 rpm electric motor in this class therefore provides room both to reduce operating losses and to manage maintenance more precisely during seasonal peaks.