High-voltage electric motor 900 kW, 1489 rpm, 6 000 V, H17R-450-B-4-6

H17R-450-B-4-6 delivers high power density for operations that require reliable performance under heavy load and in limited space. This 1400 rpm electric motor with an output of 900 kW is designed to transfer energy into the process without unnecessary downtime and without increasing the required footprint. In practice, this means that the 6000 V electric motor can be integrated into energy-intensive lines wherever stability, service availability and long-term operational reliability are decisive.

When designing high-power systems, it is particularly valuable that the three-phase electric motor can operate in a mode suitable for continuous industrial use. The VYBO Electric solution combines a large torque reserve with a design that simplifies engineering drives for pumps, compressors and other units with higher requirements for both starting and steady-state operation.

1400 rpm electric motor for stable operation of large technological units

The rated speed of 1489 rpm is suitable for drives where smooth operation without sharp fluctuations is required. At this speed, process balance in technological lines can be maintained effectively while mechanical stress on downstream parts of the system is reduced. For operators of large factories, it is also important that the motor supports the design of drives with clearly predictable behaviour under load.

Compact solution with full output in an industrial frame

An important role is played by the compact 6 kV motor, which can deliver the required output even where installation clearance is limited. The design with a shaft height of 450 mm is suitable for applications requiring high power density in an industrial assembly without unnecessarily enlarging the base frame. In engineering practice, this is appreciated by OEM manufacturers of large technological units looking for a motor prepared for precise integration into the complete system.

Such use is typical for HV electric motors, where not only the output itself but also voltage coordination, service access and safe operation during long production cycles must be addressed. The H17R-450-B-4-6 model uses a concept that meets the requirements for a robust industrial drive while leaving room for project-specific adaptation according to the type of application.

Copper rotor for long service life under load

In long-term use, the internal durability of the rotor is also decisive. The copper rotor helps reduce losses and withstand thermal stress better, which is beneficial during repeated starts as well as long operating cycles. In practice, this translates into lower thermal stress, more stable behaviour under load and better prospects for reliable service in environments with high operating intensity.

Precise design of the bearings and mechanical section is also important for this type of drive. DE bearing 6328-C3 and NDE bearing 6328-C3 support operation where the high weight of the system and long service intervals are taken into account. A weight of 5200 kg and rotor moment of inertia of 15,0 kg·m² indicate that this is a solution intended for robust industrial units, not ordinary light-duty applications.

Voltage selection for plant project standards

The voltage selection option simplifies integration into the existing electrical installation because the designer can choose a variant according to the plant’s voltage system. Availability of 3 300 V, 6 000 V, 10 000 V and 11 000 V provides room for use in different technological configurations without the need to change the drive concept itself. This is precisely where the practical value of the VYBO Electric solution for modern manufacturing plants becomes apparent.

In this class of drives, accurate temperature diagnostics and protection under long-term load are often expected. It is therefore useful that the motor can be equipped with 6 x PT100 in the winding, 1 x PT100 in the NDE bearing, 1 x PT100 in the DE bearing, an anti-condensation heater and 3 x PTC thermistor, simplifying monitoring of the machine’s condition in real operation.

Parameters that help design reliable operation

A rated current of 100,4 A, power factor of 0,9 and efficiency of 96,2 % support drive design with an emphasis on both energy balance and long-term operating costs. Insulation class F together with temperature rise B provide an operating reserve valued especially by production dispatchers and maintenance teams during continuous shifts. Rated torque of 5772 Nm is practical for large units when starting technological systems with higher inertia.

The ratios of starting and breakdown torque as well as starting current help with the design of protection and starting modes so that the drive behaves predictably within the complete assembly. For industrial applications, this is an important basis when selecting a motor for pumping stations, metallurgical technologies, mills, mixers, fan units, compressor assemblies, conveyor lines and extruders.

The H17R-450-B-4-6 model is prepared for projects where high power density, service support and long operational continuity are expected from the drive. VYBO Electric is the largest company in its sector in Central Europe. Contact us.