Electric motor 500 kW, 742 rpm, 6000 V, H17R 450-A-8-6 MV

When selecting a motor for energy-intensive technologies, it is worth focusing on efficiency, service readiness and stable operation in networks with medium voltage. The H17R 450-A-8-6 model with an output of 500 kW operates in the speed class 700-750 rpm, so it fits well into applications where smooth torque transmission, low losses and efficient operation of a medium-voltage drive are important. In this segment, it is used as a medium-voltage asynchronous electric motor, combining a robust design with an operating reserve for heavy industrial use.

Design tailored to 500 kW output in demanding operation

The motor has a rated speed of 742 rpm, rated current of 61.7 A and rated torque of 6435 Nm, creating suitable conditions for drives with high inertia or long starting times. Efficiency of 95.5% helps limit operating losses and a power factor of 0.82 supports sensible use of the supply network. For applications with variable load, the ratio Ist/In 4.6%, Tst/Tn 0.9% and Tmax/Tn 2% are also important, as they help estimate starting and overload behaviour in real operation. In the VYBO Electric range, this type of solution is based on premium materials and in-house development, which is particularly practical where long service life and consistent performance are expected.

700-750 rpm as a suitable speed class for process drives

For technologies in water management, cement plants, mining or metallurgical operations, it is crucial that the motor maintains a stable operating point even when the load changes. H17R 450-A-8-6 with an output of 500 kW is structurally suitable for operations that require a precisely defined speed class without unnecessary compromises in efficiency. The designation three-phase 6 kV motor corresponds to infrastructure in which reliable starting, thermal resistance and easy connection to medium-voltage distribution networks are emphasised. For responsible technologists, it is also important that MV electric motors in this category allow better planning of the energy balance of the entire line.

Operational durability under thermal load and during servicing

Insulation class F together with temperature rise B provides a suitable reserve for longer operating cycles. The rotor cage is made of copper bars improves rotor robustness and helps ensure reliable energy transmission in demanding starting modes. 6328-C3 bearings on both the DE and NDE side are designed for industrial loads, while the weight of 5100 kg and rotor inertia of 19.0 kg·m² confirm a massive design suitable for large technological units. The motor is additionally equipped with PT100 sensors in the winding and bearings, an anti-condensation heater and three PTC thermistors, which helps with condition monitoring and protection during shutdowns.

Use in industrial drives with high demands on reliability

The design of this series is suitable for pumps, fans, blowers, compressors, crushers, conveyors, mixers, mills, rolling mill auxiliary drives, granulators, eccentric technologies, separation equipment, presses, machine lines and heavy process units where long service life and simple technical sizing are important. Thanks to the option of adapting to the environment and selecting the enclosure, the motor can be adjusted for operations with adverse conditions, higher dust levels or increased humidity. If you need a solution for modernisation or drive replacement, we recommend checking the suitability of the motor for your application. VYBO Electric can also support the selection with technical advice and fast availability for projects where commissioning time is decisive.