High-voltage electric motor 800 kW, 743 rpm, 6000 V, IC611, H27R 4504-8-6

The design of the H27R 4504-8-6 motor is intended for operations requiring stable output, high efficiency and lower losses under long-term load. This 700 rpm electric motor actually operates at a rated speed of 743 rpm and an output of 800 kW, so it fits well into drives with high inertia and a requirement for smooth energy-efficient operation. In the HV electric motor category, not only output reserve but also the ability to maintain economical operation over the long term is important, which the H27R-HD-Modular series supports with efficiency of 95,6 % and a power factor of 0,84.

The welded steel frame provides high rigidity at high outputs while facilitating transport and installation compared with heavier cast-iron constructions. H27R 4504-8-6 therefore remains suitable where precise placement, available space and reliable mounting within the technological unit are decisive. An eight-pole electric motor of this class also provides rated torque of 10283 Nm, which is important in operations with starting under load, pumps with high hydraulic reserve or conveyors with higher starting resistance.

IE4 efficiency reduces costs during continuous operation

The main benefit remains IE4 Super Premium efficiency, which helps limit electrical losses in large drives and improves the economics of continuous operation. In this model, efficiency of 95,6 % translates into lower operating costs especially in plants where the motor runs long shifts without frequent shutdowns. For OEM solutions, this means easier fulfillment of efficiency requirements throughout the entire drive chain and better control of the technology’s energy balance.

The H27R-HD-Modular series uses a design adapted to high loads while also accounting for thermal behavior during long-term operation. Insulation class F together with temperature rise class B creates a safe operating range for demanding applications where winding thermal reserve is decisive. For industrial operations, rated current of 96,3 A is also important, allowing more precise design of the power supply, protection and starting components of the entire equipment.

Mechanical strength supports installation of large units

The welded steel frame construction is a practical solution for technologies with high mass and precise installation requirements. With a package weight of 4840 kg, handling during dispatch, placement and installation into the base frame remains important. Rotor inertia of 56,0 kg·m² and load inertia of 2070,0 kg·m² are values that must be considered when designing starting, sizing the coupling and checking dynamic stress in the drive system.

Starting torque reaches 0,7 times the rated torque, breakdown torque 1,8 times the rated torque and starting current 4,6 times the rated current. These data help set protection, power-supply coordination and selection of the starting strategy more precisely in technologies with higher inertia or assemblies where immediate torque stability is required. DE bearing type NU228-C3+6030-C3 and NDE bearing type NU228-C3 complete a robust mechanical platform for long-term industrial use.

Standard monitoring protects the drive in sensitive operation

H27R-HD-Modular motors are equipped with standard thermal protection and monitoring that support control of critical conditions during operation. In practice, this means PT100 sensors in the winding and bearings, PTC thermistors and 230 V anti-condensation heating. Such a solution helps prevent unplanned shutdowns in environments with fluctuating temperatures, higher humidity or frequent starting modes.

For integrators of technological units, it is important that a three-phase electric motor of this class can be incorporated into a broader protection, diagnostics and predictive-maintenance system. H27R 4504-8-6 is therefore suitable for modern operations that require not only output but also real-time visibility into drive condition.

Use in heavy industrial applications

H27R 4504-8-6 is intended for technologies combining high output, stable torque and long service life. It is typically used in the following applications:

• Main centrifugal pumps in power generation and water management.
• Compressor stations for process gases.
• Ventilation units in metallurgical and mining operations.
• Mill drives in cement plants.
• Ore crushers in the mining industry.
• Rolling stands in metallurgy.
• Extruders for heavy chemical production.
• Large agitators in the process industry.
• Conveyor lines with high inertia.
• Rotary drums and rotary kilns.
• Drainage and pumping units in the paper industry.
• Liquefaction technologies in the gas industry.
• Main drives in sugar-plant technology.
• Special OEM units for high-power machines.

Why it is suitable for large technological units

In segments working with high voltage of 6000 V, long operating cycles and strict availability requirements, the combination of efficiency, mechanical strength and monitoring is decisive. This model provides a stable basis for designers looking for a motor for continuous operation without unnecessary energy losses. With this solution, VYBO Electric addresses operators who want both output and equipment life cycle under control.

Contact for drive design and technical specification

If you need to verify the suitability of H27R 4504-8-6 for a specific technology, contact us and we will send you technical documentation for drive design and integration into your equipment.