Electric motor 450 kW, 990 rpm, 400 V / 690 V, H17RL 400X1-6 LV

Load fluctuations, long run-ups and the requirement for continuous operation are among the situations that most often put the drive to the test in practice. The H17RL 400X1-6 model is designed to deliver power for demanding technologies under such conditions and to operate reliably in the 900-1000 rpm range, where industry needs stable torque and a sensible energy balance. In this class, it is used as a three-phase motor 400/690 V for modern lines that require a precise connection between the mains, the load and efficiency.

Power for the 900-1000 rpm range in demanding operations

With a rated output of 450 kW and rated speed of 990 rpm, this drive provides a reserve for applications where the motor is expected to start reliably and handle long-term load. The rated torque of 4341 Nm helps maintain the process without an undesirable drop in performance, and a starting torque ratio of 120 % together with a breakdown torque ratio of 200 % supports a sensitive start-up of the technology. The starting current ratio of 680 % must be taken into account already at the power supply design stage, especially if the drive is to be part of a larger technological unit.

An efficiency of 96.1 % and a power factor of 0.86 are important in operations that monitor energy consumption on every line and for every kilowatt hour. That is why the H17RL 400X1-6 fits well into environments that prefer a low-voltage asynchronous electric motor with long-term operational stability and confidence under continuous load. VYBO Electric uses premium materials and in-house development in this range, which is reflected in a design suited to demanding industrial deployment.

Strong cast-iron frame and equipment for long operation

The strong cast-iron frame helps damp vibrations and maintain mounting accuracy even in operations where vibration and thermal stress are a normal part of the day. Standard equipment includes a steel cooling cover, reinforced bearings with steel protection, high-temperature grease in the bearings, a metal terminal box and reinforced bearing shields. The rotor cage in a heavy-duty aluminium design supports a robust start-up, and the DE 6326C3 and NDE 6326C3 bearings are rated for reliable operation across a wider performance spectrum.

The motor can be matched with various supplies, which makes it easier to modernise plants with different voltage levels. In practice, this means that the three-phase motor 400/690 V can be part of solutions for 380 V, 440 V, 500 V, 690 V and 720 V systems without an unnecessarily complicated drive design. Such a solution is especially appreciated by technology suppliers and industrial companies that are replacing an older machine with a more compatible electric motor for low-speed applications.

Modern design for European industry and precise integration

This range is developed and manufactured specifically for European industry, especially for Western Europe, where emphasis is placed on long-term service predictability and consistent build quality. The modern design created using Hi-TECH technologies supports effective cooling, precise mechanical mounting and practical integration into existing drive system frames. Insulation class F together with temperature rise B creates the conditions for stable operation even under higher thermal load.

A weight of 3650 kg, an external starting inertia of 443 kg·m² and a moment of inertia GD² of 50.0 kg·m² are parameters that give designers an important basis for the design of acceleration, braking and the mechanical link to the technology. A drive conceived in this way belongs among drives for demanding applications where precise coordination between the motor, the gearbox and the process is required.

Overview of use in industrial practice

• Main fans for process filters in cement plants.
• Raw material crushing mills in mineral processing.
• Pumps for process water in steelworks.
• Compressor stations in chemical production.
• Extruders in plastics processing.
• Discharge conveyors in bulk material warehouses.
• Rolling lines in metallurgical operation.
• Agitators in food mixing tanks.
• Milling units in heavy engineering.
• Centrifuges in the paper industry.
• Drive for test benches in technology laboratories.

If you need to deal with a drive replacement in an operation with low-voltage infrastructure, the H17RL 400X1-6 offers a practical basis for a reliable design and a long service interval. Available accessories, including 6x PT100 in the winding, PT100 in the DE and NDE bearing, anti-condensation heater and 3x PTC, simplify monitoring of the motor thermal condition in sensitive processes. VYBO Electric acts as a proven manufacturer and distributor, so this model is suitable where technical certainty and long-term operational discipline are both important in the selection. For the final specification of a suitable version for your equipment, send us an enquiry.