High-voltage electric motor 400 kW, 987 rpm, 6 000 V, H17R 400-A-6-6

H17R 400-A-6-6 brings compact power to operations in a segment where stability, long service life and straightforward integration into large technological units are expected from the drive. This 900 rpm electric motor with an output of 400 kW is designed for tasks where continuous running, low operating losses and controlled behaviour under load are monitored. For factory operators and OEM integrators, this high-voltage electric motor provides a reliable basis for high-power assemblies where energy is converted into available torque without unnecessarily increasing space requirements.

Copper rotor reduces losses under heavy load

The greatest practical benefit comes from the copper rotor, which helps maintain low losses even during long-term operation. Copper strip in the rotor cage increases the thermal resistance of the design and supports service life during repeated starts, process fluctuations or higher thermal stress. In applications with frequent load changes, this detail results in less rotor overheating and more stable energy transfer to the mechanical section of the machine.

In drives where long-term availability is required, this approach is also valuable from a maintenance perspective. Operation can be planned with a lower risk of unexpected shutdowns, and the service team gains a motor that handles demanding duty cycles better. Industrial drive technology at this output benefits from a solution that maintains its parameters even in environments with higher thermal load and requirements for precise integration into production lines.

IE4 Super Premium efficiency for long-term savings

IE4 Super Premium efficiency is important wherever the motor operates for long hours and every kilowatt-hour affects operating costs. A drive designed this way supports more economical energy use in demanding industrial drives while also helping limit excess heat losses. For production, this means more useful work from the energy input and lower cooling requirements for the surrounding system.

Rated current of 47,6 A, rated speed of 987 rpm and rated torque of 3870 Nm create an operating profile suitable for large processes with steady load. Breakdown torque, starting torque and starting current are selected so that the motor fits well into applications requiring controlled starting and reliable connection to downstream mechanics. For large production units, it is important that the motor remains predictable even when integrated into switchgear, gearboxes and process nodes.

Frequency selection simplifies integration into different grids

The frequency selection option simplifies use in companies that work with different power-supply standards or export projects. The configuration is also available for 60 Hz, which is practical for deliveries to technological units outside the European environment and for OEM projects with a broader geographical scope. This shortens engineering time and reduces the need for complicated modifications on the drive side.

A six-pole electric motor in this version naturally fits applications where a lower speed range and robust power transmission into the process are preferred. A shaft height of 400 mm provides a structural basis for power assemblies with higher mechanical reserve and also helps when designing installation into existing frames. A weight of 4010 kg and rotor moment of inertia of 11,8 kg·m² are parameters valued by designers when engineering starting, stopping and compatibility with downstream equipment.

Temperature and bearing monitoring is also decisive

In practice, emphasis on monitoring the condition of bearings and windings is also valuable because at high outputs every detail affects line reliability. 6326-C3 bearings on both the DE and NDE sides support operation where long-term stability and precise rotor guidance are expected from the motor. Insulation class F together with temperature rise B create suitable reserve capacity for applications where the drive operates under continuous load and in demanding surroundings.

For OEM manufacturers, the available accessories that expand operational monitoring and protection options are also an advantage. 6xPT100 in the winding, 1xPT100 in the NDE bearing, 1xPT100 in the DE bearing, an anti-condensation heater and 3xPTC thermistor are available, simplifying integration into systems with increased diagnostic requirements. VYBO Electric thus offers a solution that can be adapted to the conditions of large factories as well as specific process units without losing clarity in maintenance.

Applications for large technological units

This motor is suitable for operations requiring smooth power transmission and long operating endurance:

• Centrifugal compressors in process lines with uninterrupted load.
• Main cooling-water pumps in power-generation units.
• Crushers in cement and mining environments.
• Fan units for incinerators and filtration of process gases.
• Extruders in the rubber and plastics industries.
• Drives for rolling and conveyor lines in heavy industry.

Overview for procurement and integration into production

H17R 400-A-6-6 is suitable for projects where long service life, high efficiency and the ability to operate in a stable mode without excessive energy losses are expected from the drive. Combined with a copper rotor, IE4 Super Premium efficiency and frequency selection, it provides scope for efficient design and operation across several heavy-industry segments. For series deliveries and technology expansion, use the VYBO Electric offering, which helps maintain output and reliability during long-term deployment.

VYBO Electric operates according to ISO certificates and supports deliveries for projects where consistent quality in every unit of the series is important.