Electric motor 355 kW, 742 rpm, 400/690 V, H17RL 400X1-8

H17RL 400X1-8 is a three-phase industrial motor with an output of 355 kW, designed for operations where reliable energy transmission and stable operation under continuous load are decisive. In the drive segment for large-scale technology, this 700 rpm electric motor delivers compact output for space-constrained assemblies while retaining reserve capacity for high-torque processes. The VYBO Electric model is therefore suitable for factory operators and OEM manufacturers that need a motor ready for integration into demanding lines and assemblies.

The concept of this series is based on the principle that output does not require excessive installation space. The 400 mm frame size enables sensible connection to gear systems, pump units or mechanical drives with higher inertia. At a rated speed of 742 rpm, the motor behaves predictably even in applications where smooth starting and stability under load are important. In practice, this means the drive system receives a source of motion that can be incorporated into larger systems without unnecessary compromises in enclosure space or base-frame design.

Compact output for industrial drives with higher inertia

The high rated torque of 4569 Nm gives this motor the capability to start and operate in applications with greater mechanical resistance. A starting torque ratio of 120 % and breakdown torque of 200 % support use where the drive is expected to handle dynamic load changes. The starting current of 650 % also indicates an operating condition for which the designer must allow adequate electrical sizing of the entire system.

For OEM manufacturers, it is important that the asynchronous squirrel-cage electric motor remains mechanically straightforward to integrate while responding well to repeated operating cycles. The solid aluminium rotor cage is selected so that the motor can withstand long-term deployment in heavy or process industry without unnecessary service requirements. With an efficiency of 95,4 %, losses are also reduced, which in continuous processes is important for thermal stability and overall operating costs.

Robust cast-iron construction for demanding production operation

Robust cast-iron construction provides a solid foundation for equipment operating in continuous shifts and exposed to vibration, sudden load changes and long operating intervals. Combined with insulation class F and temperature rise B, the motor is prepared for long-term deployment in environments where thermal reserve and winding stability are expected from the drive. 6326C3 bearings on both the DE and NDE sides support running accuracy and longer service life in assemblies with higher mechanical loads.

With motors in this class, the behaviour of the complete assembly under actual process stress is also decisive. A weight of 3410 kg means substantial structural stability in practice when connected to machinery with high dynamics. The moment of inertia GD² 56,000 kg·m² and external starting inertia 466,000 kg·m² are values relevant when designing systems with shaft couplings, gearboxes and heavier working elements. For orders for large factories, it is also important that VYBO Electric uses processes covered by ISO certificates, which facilitates the motor’s inclusion in standardised projects.

Choice of voltage for different mains conditions

A supply voltage of 400 V / 690 V enables flexible design according to the mains, starting method and required operating mode. This three-phase electric motor can be adapted to projects that also need to use additional voltage levels within the technical solution, particularly in combination with switchboards and converters in heavy industrial practice. The result is simpler integration into technological systems, which are often designed for a long life cycle and minimal intervention in the mechanical section.

The H17RL Compact PRO model is therefore also suitable where different power-supply standards are used within one plant. Such a solution shortens project preparation time and simplifies deployment in both new and modernised lines. For the operator, this means fewer modifications at equipment level and greater flexibility when selecting the drive configuration.

700 rpm electric motor for heavy process applications

This power class is used where stable torque must be delivered while maintaining reasonable overall drive dimensions. As a result, the motor is used in industries where continuous operation, high load capacity and precise system sizing are expected. For designers and maintenance teams alike, it is important that the basic construction supports long service intervals and predictable operating behaviour.

• Main mills for processing bulk materials.
• Large conveyor lines in cement production.
• Compressor units for process air.
• Pump units for waterworks and industrial circuits.
• Crushers and screening equipment for heavy material processing.
• Fan assemblies for extraction and process ventilation.

VYBO Electric and service features for long-term reliability

For projects where winding and bearing temperatures are monitored, accessories are available in the form of 6xPT100 in the winding, 1xPT100 in the NDE bearing, 1xPT100 in the DE bearing, an anti-condensation heater and 3xPTC thermistor. Such equipment helps keep operation under control, especially in environments with higher humidity, frequent starting or a requirement for precise monitoring of thermal condition. For maintenance teams, this means better diagnostics and faster response to changes in load.

The asynchronous squirrel-cage electric motor in the H17RL Compact PRO series provides a solution well suited to both modernisations and new technological systems. Here VYBO Electric combines robust mechanics, suitable electrical parameters and practical monitoring options in a product that meets the requirements of large factories. Take advantage of the offer and move your drive towards stable performance that supports long and reliable operation.