Electric motor 185 kW, 738 rpm, 6000 V, H17R 315-C-8-6 MV

H17R 315-C-8-6 185 kW is a practical choice for drives that need a stable torque and a sensible reserve for long-term loading in operation. The rated point of 738 rpm belongs to the 700-750 rpm speed class, so the motor naturally fits applications where smooth starting, process control and higher reliability in production operation are important. This is a medium-voltage asynchronous electric motor designed for industrial use with an emphasis on service life, service availability and stable performance.

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

In pumps, fans, compressors and heavy machinery, it is crucial that the drive holds the operating point without unnecessary fluctuations. This motor uses 185 kW of power, a rated current of 24.9 A, a rated torque of 2394 Nm and an efficiency of 94.4 %, which helps keep the energy balance of the operation under control. The power factor of 0.76 corresponds to a high-performance industrial drive and at the same time allows the power supply for the entire line to be designed rationally.

The frame size of 315 mm is suitable where robust mounting, easier connection to the technology and space for servicing interventions are expected. In practice, the weight of 3200 kg also helps, supporting firm installation in the drive assembly, and the rotor inertia of 6.0 kg·m² improves behaviour during starting and load transitions. It is also important for the operator that the frame size can be matched to several voltage levels, which makes integration into existing medium-voltage distribution systems easier.

Materials and bearings increase durability under long-term load

The internal design is based on practical elements that are important in continuous operation. The rotor cage is made of copper bars supports good electrical and mechanical properties of the rotor, and the DE 6322-C3 and NDE 6322-C3 bearings are selected with operating stability in mind. Insulation class F together with temperature rise B create a suitable reserve for industrial use in conditions where the motor operates for long hours under load. This approach is typical of energy-efficient industrial motors that are expected to perform even in demanding duty.

Accessories that extend diagnostics and drive protection are also important in practice. The equipment includes PT100 windings and bearing sensors, an anti-condensation heater and a set of three PTC thermistors, so the operator can better monitor temperature conditions and minimise the risk of unplanned shutdowns. For higher-power motors, this kind of additional protection is often what separates a standard installation from a solution prepared for long-term operation.

Industrial applications of the medium-voltage motor

• Pumping stations for water supply and process circuits.
• Fan units for ventilation, extraction and cooling technologies.
• Compressor assemblies with a requirement for stable performance under continuous load.
• Drive for conveyors and transport lines in large plants.
• Units for mixing and homogenising equipment.
• Heavy technological machines with medium-voltage power supply.
• Distribution systems for industrial lines with a voltage of 6000 V.
• Upgrades of existing drives in 3.3 kV, 6 kV, 10 kV or 11 kV networks.

Accurate connection to medium-voltage networks simplifies integration

For companies that work with a 6000 V electric motor, compatibility with the voltage level and safe integration into the existing infrastructure are important. The design solution of the H17R 315-C-8-6 model makes deployment easier in technologies where reliable starting, long service life and space for maintenance planning are required. In such operations, it is crucial that the drive is not only powerful, but also predictable under long-term load.

Parameters that matter in operational design

When designing a drive, it is worth working with values that have a real effect on the sizing and behaviour of the assembly. In this case, the important figures are a rated speed of 738 rpm, a rated torque of 2394 Nm, a current of 24.9 A, an efficiency of 94.4 %, a power factor of 0.76 and a rotor inertia of 6.0 kg·m². These data help to set the starting correctly, assess the network load and choose suitable protection and control for the technology.

Thanks to its own development and emphasis on premium materials, the VYBO Electric brand offers a solution that is ready for demanding industrial tasks and long-term operation. If you need a motor for a pump, fan or compressor assembly, or for another medium-voltage technology, send us an enquiry and we will prepare expert documentation for the next step.