Electric motor 710 kW, 1488 rpm, 400 V / 690 V, H17RL 400X3-4 LV

When selecting a drive for line modernisation or replacing an older unit, it is worth focusing on operating reserve, service logic and compatibility with the power distribution system. H17RL 400X3-4 is a solution for the 1400-1500 rpm segment, supporting efficient operation of a low-voltage drive in applications where stable starting, long-term thermal behaviour and reliable power transmission are important. The low-voltage asynchronous electric motor in this range is designed for production plants, technology suppliers and industrial businesses that need a motor solution with expert technical advice and consistent workmanship from VYBO Electric.

1400-1500 rpm segment for drives in demanding applications

In this performance class, the motor has 710 kW, rated current delta 400V 1213 A and rated current Y 690V 703 A, which makes it possible to adapt the connection to the specific infrastructure. The rated torque of 4557 Nm together with a starting torque ratio Tst/Tn of 120 % and a breakdown torque ratio Tmax/Tn of 220 % provide a solid basis for drives operating with variable load. The starting current ratio Ist/In of 700 % must be taken into account already at the power supply design stage, especially in industrial lines with limited reserve. The low-voltage asynchronous electric motor is therefore suitable where the start is expected to follow a predictable course and the resulting operation to proceed without unnecessary compromises.

• Compressor stations with industrial cooling.
• Milns for processing mineral raw materials.
• Rolling lines in metallurgical production.
• Ventilation units for heavy operating conditions.
• Pump units in the energy sector.
• Conveyors with long travel and high inertia.
• Mixers for chemical operations.
• Aggregate crushers in quarry technology.
• Extruders in polymer processing.
• Bricketting presses in recycling lines.
• Rotary dryers in materials production.
• Production mixing centres for building compounds.
• Extraction systems for dusty technological units.
• Drum screen drives.
• Technological winches in metalworking production.

Robust cast iron frame and mounting design for industrial use

The robust cast iron frame helps maintain assembly rigidity even in operations where vibration and dynamic shock loads are part of everyday work. The frame size according to IEC 400 mm makes integration into existing machine sets easier, and the choice of IM B3, B35, B5 or V1 mounting simplifies connection to the specific technological assembly. An electric motor for universal industrial applications in this design fits better into modernisations where space, service access and the overall mechanical system are all important.

The modern design created using Hi-TECH technologies supports manufacturing accuracy, repeatability of assembly and clean interfaces between individual parts. Standard equipment includes a cooling cover made of steel, reinforced bearing arrangement including steel shielding and high-temperature lubrication, a terminal box in a metal version and reinforced bearing shields for a more stable structure. The external starting inertia of 465 kg·m² and the moment of inertia GD² of 39.2 kg·m² are values that must be included in the start-up and control design, especially for drives with a larger rotating system.

Efficiency of 96.3 % and technical support for long-term operation

Efficiency of 96.3 % together with a power factor of 0.88 reduces operating losses and helps with power sizing in operations where every kilowatt hour is monitored. Insulation class F and temperature rise B provide thermal reserve during stable load, which is appreciated by the low-voltage asynchronous electric motor used in continuous production. The rotor cage in a solid aluminium design supports robust rotor construction, while the DE 6326C3 bearing and the NDE 6326C3 bearing contribute to predictable operation in long duty cycles.

A weight of 3790 kg corresponds to a performance class in which emphasis is placed on mounting stability and mechanical resistance during repeated starts. For this model, accessories for thermal protection can also be used, specifically 6x PT100 in the winding, PT100 in the DE and NDE bearing, an anti-condensation heater and 3x PTC, which makes it easier to monitor the condition of the motor in sensitive operations. VYBO Electric works with ISO certificates and production control, which is why the H17RL Compact PRO is suitable for modernisations where technical certainty and service clarity are required. If you need to design a suitable connection or compare this motor with an alternative for your technology, send us an enquiry.