Electric motor 560 kW, 742 rpm, 400 V / 690 V, H17RL 450X2-8 LV

Compared with a conventional solution, the H17RL 450X2-8 delivers performance that is ready for demanding technologies, where stability of torque delivery, thermal reserve and reliability during long operating cycles are of decisive importance. This motor with an output of 560 kW is designed for the 700-750 rpm range, so it fits naturally into applications where consistent operation without unnecessary fluctuations is required. In practice, this is the H17RL 450X2-8 400/690 V, which is built as a solution for modern LV electric motors in heavy industrial operation.

The heart of the construction is a strong cast iron frame, which helps maintain geometry even under long-term load and also supports a long service life in conditions with higher vibration levels. The 450 mm frame size provides enough space for robust housing of the active parts and for straightforward integration into existing drive assemblies. Customers will also appreciate that the motor can be matched with 380 V, 440 V, 500 V, 690 V and 720 V networks, which makes modernisation easier in plants with different voltage levels.

VYBO Electric develops this series specifically for European industry, especially for Western Europe, where the emphasis is on compatibility, service continuity and predictable operation. The modern design created using Hi-TECH technologies is reflected in more precise detail processing and refined behaviour in demanding applications. As a low-voltage asynchronous electric motor, this version is suitable for machines where reliable starting and stable operation over a long period are required.

700-750 rpm range for heavy drives and stable torque delivery

Rated speed of 742 rpm and rated torque of 7208 Nm give the design the prerequisites for drives that operate with high inertia and require predictable dynamics. The starting torque ratio of 120 percent and the pull-out torque ratio of 200 percent support confidence during starting and during transient conditions. The starting current ratio of 650 percent must be taken into account in power supply design, especially in technological units with a sensitive network. In this speed range, the motor is used where the equipment is expected to provide smooth power transmission and precisely controlled load.

For drives that operate as an electric motor for low-speed applications, efficiency and electrical behaviour in steady-state operation are also important. Efficiency of 95.8 percent and a power factor of 0.81 help to keep operation efficient even during long-term use in energy-intensive sections. Insulation class F and temperature rise B create the technical basis for operation in conditions where emphasis is placed on the thermal resistance of the winding and on reserve capacity during repeated starts.

Construction that supports a long service life in industry

The standard equipment includes a steel cooling cover, reinforced bearings with steel shielding, high-temperature grease in the bearings, a metal terminal box and reinforced bearing end shields. The copper strip rotor cage supports robust starting performance and stability under load, which is particularly important in operations with frequent starts or higher system inertia. Bearing DE 6328C3 and bearing NDE 6328C3 are selected to support reliable operation over long service intervals.

In supporting applications, the external starting inertia of 735 kg·m² and the moment of inertia GD² of 84.0 kg·m² are also useful, helping with drive ramp-up design and with coordination with gears, fans or pumps with greater mass reserve. The weight of 5080 kg corresponds to a robust design intended for industrial operations with high demands for mechanical resistance. The in-house development of VYBO Electric is reflected here in details that make integration into the technology easier while also supporting a reliable purchase for a long operating horizon.

400 V / 690 V supply for network differences and modernisations

One of the practical reasons why this three-phase 400/690 V motor performs well in industry is its ability to adapt to different voltage levels without unnecessary compromise in drive design. This is appreciated by manufacturing plants, technology suppliers and companies that are replacing older equipment with a solution that matches today’s infrastructure. In the 700-750 rpm range, pumping, mixing and conveyor technology can therefore be designed with a clear reserve for operating load.

In practice, this motor is used in rolling mills, large-capacity fans, industrial compressors, pumping stations, agitators, high-inertia conveyors and material crushers. In these operations, not only rated power matters, but also starting behaviour, compatibility with the distribution system and the ability to maintain stable operation over the long term. If the project also includes condition monitoring, thermal protection is available with 6x PT100 in the winding, PT100 in the DE and NDE bearings, anti-condensation heating and 3x PTC, which simplifies supervision of the thermal regime in demanding production.

VYBO Electric sells its solutions worldwide, and this experience is also reflected in the H17RL Compact PRO series. When selecting a drive, it is worth considering not only the power, but also the load profile, network characteristics, required starting performance and the service strategy of the entire technology. If the operation is to be built on a reliable foundation, send us an enquiry and prepare a proposal that matches the real conditions of the equipment.

H17RL Compact PRO for drive modernisation and a safe purchase

The H17RL Compact PRO series is suitable for projects where the need for performance, durability and long-term operational predictability are combined. Thanks to in-house development, premium materials and the technical background of the VYBO Electric brand, the motor integrates easily into both new installations and replacements of existing units. For engineers, it is important that the design supports a reliable purchase without unnecessary compromises in service or operating mode.