Electric motor 500 kW, 2978 rpm, 400 V / 690 V, H17RL 355X4-2 LV

When selecting a drive for production technology, we recommend starting with the required operating reserve, thermal behaviour and service strategy. It is precisely within this framework that the H17RL 355X4-2 model stands out as a solution that supports higher reliability in production operation even during long load cycles. For applications where the 2900-3000 rpm range is decisive, it provides stable operation, good compatibility with inverter and direct supply architectures, and scope for the efficient modernisation of existing lines.

A compact high-output solution for the 2900-3000 rpm range

This design combines a compact solution with high output, leaving more space in switchboard areas and on technological platforms for other drive components. The rated output of 500 kW is practically usable where the electric motor is expected to transfer energy smoothly to the process without unnecessary operating losses. The rated torque of 1603 Nm supports start-up and loaded technological sequences, and the rated current in Delta 400V 846 A together with the rated current in Y 690V 491 A gives designers a precise basis for selecting the supply. The electric motor 400 V / 690 V can therefore be connected to systems that already operate with a high level of standardisation and clearly defined operating branches. Thanks to the rated speed of 2978 rpm, the motor remains in a range that is well suited to pumps, fans and compressor systems with a requirement for stable dynamic operation. The efficiency value of 96.1 percent and power factor of 0.89 are important where network draw and supply quality are monitored continuously.

Standard equipment includes a steel fan cover for better protection of the cooling section, reinforced bearings protected by a steel cover, grease resistant to high temperatures, a metal terminal box with a more robust design, and reinforced bearing shields for higher mechanical durability. The squirrel cage rotor in a solid aluminium design increases durability during start-up and repeated loading. Insulation class F together with temperature rise B creates a reserve for processes in which the motor operates for long periods in a demanding thermal balance. For customers dealing with a three-phase motor 400 V as part of the reconstruction of production units, mechanical continuity between the older mounting arrangement and the new drive is also important.

Environment-specific adaptation and heavy industry in the Heavy Duty process performance class

The possibility of adaptation according to the environment is practical for projects where the same technical platform is deployed in dry halls, dusty operations and humid environments. The available IP56, IP65, IP66 and IP67 protection ratings make it possible to adapt the motor to the conditions of the specific technology without changing the overall drive concept. The electric motors in this series are intended for heavy industry and belong to the Heavy Duty process performance class, which is important for the steel industry, power generation, water management and continuous manufacturing, where unplanned shutdowns affect the entire line. For low-voltage infrastructure in industrial enterprises, it is essential that this is a platform prepared for long-term operation with an emphasis on service predictability. The frame size according to IEC 355 mm simplifies integration into existing mechanical assemblies and at the same time leaves room for rational sizing of foundations, couplings and protective elements.

Industrial applications and technical support for drive modernisation

The H17RL Compact PRO range was developed and manufactured specifically for European industry, especially for Western Europe, where emphasis is placed on standards compliance, long service life and control of operating costs. Thanks to the company VYBO Electric’s own research and development, a range has been created that takes into account not only the rated output, but also the service habits of technology suppliers and maintenance teams. Also important are the weight of 2580 kg, external starting inertia of 164 kg·m², moment of inertia GD² 16,000 kg·m², as well as the ratio of starting torque Tst/Tn 140 percent, the ratio of pull-out torque Tmax/Tn 200 percent and the ratio of starting current Ist/In 700 percent, because these data directly affect starting design and protection coordination.

For demanding industrial operations, this electric motor is used mainly in circulating pumps for cooling circuits, high-pressure process pumps, axial fans, extraction fans, compressor stations, chemical reactor agitators, bulk material conveyors, mixing mills, rolling units, engineering test stands, water management pumping stations and press line operation. Such deployment also requires reliable monitoring of temperature and bearing condition, which is why the available equipment is extended with PT100 sensors for the windings and bearings, an anti-condensation heater and three PTC thermistors. The DE 6220C3 bearing and the NDE 6220C3 bearing complete a design that is ready for long operating intervals without unnecessary intervention.

VYBO Electric ISO certificates confirm a controlled manufacturing process and stable quality in serial production. When modernising or replacing a drive, you therefore gain not only performance parameters, but also technical backing for long-term operation. For project enquiries, technical comparison or specification for a particular technology, please request a quotation.

Energy-saving electric motors for long operation and service confidence

In operations that track both energy costs and component service life, energy-saving electric motors make sense especially when efficiency is combined with robust mechanics and well-managed cooling. The H17RL 355X4-2 fulfils this logic by combining high output with a solution that remains clear for maintenance, integration and spare parts planning. With a drive sized in this way, every kilowatt-hour has a more pronounced impact on the final operating balance than with smaller drives, which is why system support from the manufacturer and the VYBO Electric technical range is also important.

• Circulating pumps for cooling systems in power generation and production.
• High-pressure process water pumps in the chemical industry.
• Axial fans for technological and extraction units.
• Extraction fans for incineration plants and filtration stations.
• Compressor systems for compressed air in industrial parks.
• Agitators for suspensions in chemical reactors.
• Conveyors for bulk materials in cement plants and quarries.
• Mills for crushing and grinding in raw material processing.
• Rolling units in metallurgical operations.
• Test stands for engineering and production technologies.
• Water management pumping stations with long daily loads.
• Pressing and forming lines with repeated start-up.

If you are dealing with the replacement of an existing motor or the design of a new drive, H17RL Compact PRO provides a balanced combination of output, durability and customisation options for European industry. VYBO Electric keeps this range within a professional scope for projects where stable operation, service clarity and long-term support for components are expected. For accurate pricing and technical fine-tuning according to your technology, please request a quotation.