Electric motor 220 kW, 740 rpm, 6000 V, H17R 355-B-8-6 MV

When selecting a motor for continuous production, it is worth choosing a solution that can handle high loads, stable operation and precise connection to existing infrastructure. The H17R 355-B-8-6 model with an output of 220 kW belongs to the speed class 700-750 rpm and is intended for operations where the drive is expected to deliver reliable performance for demanding technology. In practice, this is the H17R 355-B-8-6 220 kW in a version for a 6000 V grid, which is appreciated by modernisation projects as well as replacements for older units.

The motor is designed as a three-phase motor 6 kV with a rated speed of 740 rpm, rated current of 28.8 A and rated torque of 2839 Nm. This combination supports smooth starts and sufficient reserve under heavier process loads. When operating in the 700-750 rpm range, it is well suited where speed stability, precise synchronisation with the process and resistance to long-term use are important.

The design from VYBO Electric is based on premium materials and in-house development, which is particularly important in segments with higher demands for reliability. The rotor cage is made as copper bar rotor, which contributes to efficient energy transfer and rotor robustness under repeated loads. The motor has an efficiency of 94.7% and a power factor of 0.78, so with a correctly designed drive it helps reduce operating losses throughout the entire process chain.

Design suitable for long-term use in heavy industry

The 355 mm frame size creates space for robust mounting of the main components and at the same time supports mechanical stability under continuous load. Insulation class F together with temperature rise B provides a reasonable thermal reserve for applications in which high operational discipline is expected. A weight of 3350 kg and rotor inertia of 7.5 kg·m² are parameters that must be taken into account already in the foundation design, coupling and starting mode.

The motor uses a DE 6322-C3 bearing and an NDE 6322-C3 bearing, which is important when designing service intervals and monitoring vibrations. Accessories include PT100 sensors for windings and bearings, an anti-condensation heater and three PTC thermistors, so condition monitoring of the machine is ready for operation in sensitive industrial environments. Such a solution supports safer starting after shutdown and better protection during changes in ambient temperature.

Operation in the 700-750 rpm range for stable process performance

In this speed class, the motor is suitable where a balanced combination of power, traction and controllability of the drive is required. The values Tst/Tn 1.2%, Tmax/Tn 2.4% and Ist/In 5.3% are suitable for technologies that require controlled starting and predictable response to load. From the point of view of both the designer and maintenance, this is a solution that can be precisely integrated into existing operational standards.

The medium-voltage solution is suitable for the production segment where direct connection to higher-voltage distribution is expected and long-term energy efficiency is important. This is where the electric motor 6000 V also performs well, because it helps to reduce current loading compared with low-voltage alternatives at the same power class. In combination with consistent monitoring of temperature and bearings, this is a solution suitable for modern production lines and process units with continuous operation.

Industrial applications of medium-voltage drive

This model is used in drives for heavy industry, in pumping stations, compressor units, fan assemblies, mixing equipment, conveyor systems, mills, process units in cement plants and auxiliary drives in power plants. In each of these cases, resistance to long operating periods, the ability to transmit stable torque and the possibility of reliable monitoring of component condition are important. For projects that require an 8-pole electric motor with medium-voltage insulation and a service-friendly design, this is a very practical choice.

Suitable for modernisation as well as replacement of an existing drive

If an operation is planning to replace an older motor, the decisive factors are often dimensional compatibility, availability of diagnostics and the ability of the new unit to handle the required load without compromising reliability. In this version, the H17R Compact PRO-MV offers a combination of a robust frame, precisely defined bearings and sensor equipment that simplifies integration into the maintenance regime. For technology suppliers and manufacturing plants alike, this is a solution that reduces the risk of unplanned downtime and supports long-term purchasing with an emphasis on stable operation; if you need to verify suitability for a specific application, please request a quotation.