Three-phase electric motor: H17RL-355X2-8 280KW 400V/690V 50HZ
| Basic technical data | |
| Motor type | H17RL 355X2-8 |
| Rated power (kW) | 280 |
| Frame size (mm) | 355 |
| Number of poles | 8 |
| Rated speed (rpm) | 740 |
| Frequency (Hz) | 50 |
| Electrical parameters | |
| Rated voltage (V) | 400/690 |
| Connection | D/Y |
| Rated current 400 V (A) | 533 |
| Rated current 690 V (A) | 309 |
| Efficiency at 100% load (%) | 95,1 |
| Power factor at 100% load | 0,80 |
| Starting and torque characteristics | |
| Rated torque (Nm) | 3614 |
| Locked-rotor torque ratio (LRT/RLT) in % | 120 |
| Breakdown torque ratio (BDT/RLT) in % | 200 |
| Locked-rotor current ratio (LRA/RLA) in % | 650 |
| External starting inertia (kg·m²) | 369 |
| Moment of inertia GD² (kg·m²) | 36,4 |
| Applicable standards | |
| Specification | IEC60034-1 |
| Testing | IEC60034-2 |
| Noise | IEC60034-9 |
| Vibration | IEC60034-14 |
| Construction and operating data | |
| Mounting arrangement | IM B3 (other designs on request) |
| Duty type | S1 |
| Load type | Parabolic or linear curve |
| Degree of protection | IP55 |
| Insulation class | F |
| Temperature rise class | B |
| Cooling method | IC411 |
| Starting method | DOL, VFD or soft starter |
| Direction of rotation | Both |
| Vibration (mm/s) | 2.8 |
| Rotor cage | massive aluminium squirrel cage |
| Terminal box type | VYBO CB2-LV |
| Operating conditions | |
| Ambient temperature range (°C) | -20 to +40 (-30, +50, +60 optional) |
| Maximum installation altitude | up to 1000 m |
| Weight and surface finish | |
| Approximate weight | 2750 kg |
| Colour | RAL7030 |
| Paint finish | gloss |
| Bearings and lubrication | |
| DE/NDE bearings | 6322C3/6222C3 |
| Lubricant | Lithium-based grease No. 2 (temperature class) |
| Accessories | |
| 6 x PT100 in windings | |
| 1 x PT100 in NDE bearing | |
| 1 x PT100 in DE bearing | |
| Space Heater 230V | |
| 3 x PTC in windings | |
700 rpm electric motor for high power density in industry
H17RL 355X2-8 is designed to deliver high power density in a compact frame for production lines that cannot afford to waste time or space. This 700 rpm electric motor performs where stable torque, smooth starting and reliability under continuous load are decisive. In practice, it is a drive-technology solution that helps keep production on schedule even under demanding operating conditions.
Thanks to an output of 280 kW and rated speed of 740 rpm, this three-phase electric motor handles applications where balanced transfer of energy into the process is important. Rated torque of 3614 Nm provides sufficient reserve for starts with higher inertia and for operations where the drive must rely on stable characteristics without unnecessary fluctuations.
Compact output for large production systems
Operators of large factories particularly appreciate that compact output does not mean compromising working performance. A shaft height of 355 mm allows drives to be designed with sensible use of space, which is important both for retrofit projects and for integration into new technological systems. This low-voltage electric motor is ready for use where a reliable response to load changes and long-term operating stability are expected from the drive.
Efficiency of 95,1 % supports economical operation, while a power factor of 0,8 helps with power-supply design in plants with large loads. Rated current △ 400V 533 A and rated current Y 690V 309 A give designers flexibility to adapt the connection to the specific network and switchboard-system requirements. For OEM manufacturers, this is a practical foundation when designing equipment that must be repeatable and service-friendly.
Cast-iron frame for long duty cycles
Robust cast-iron construction increases the motor’s mechanical resistance to vibration, shock loading and long-term stress during continuous operation. A weight of 2750 kg contributes to overall stability and in many applications helps damp unwanted dynamic effects. Industrial plants operating multiple shifts can particularly appreciate this reserve in drive behaviour.
Insulation class F and temperature rise B are selected so that the motor can handle more demanding thermal conditions while maintaining operating reliability. The solid aluminium rotor cage supports robust starting behaviour and helps during frequent starts when the technology cannot be delayed by prolonged acceleration. DE bearing 6322C3 and NDE bearing 6222C3 complete the assembly with a solution suitable for continuous industrial use.
Choice of voltage for network integration
The option to choose the voltage is essential for large factories especially when the drive is connected to existing infrastructure or a specific OEM project. Available variants of 440 V, 500 V, 690 V and 720 V simplify adapting the motor to the specific voltage standard and reduce the need for changes to the electrical design. This approach saves time during commissioning and simplifies deliveries to multiple markets.
Rated current, starting ratios and inertia values allow more precise sizing of starting and protection. A starting torque ratio of 120 %, breakdown torque ratio of 200 % and starting current ratio of 650 % provide important data for designing the start of technological systems with higher inertia. External starting inertia of 369,000 kg·m² and a GD² moment of inertia of 36,400 kg·m² provide a practical basis for designing operation where the drive must behave predictably.
ISO certificates as support for production purchasing
When procuring equipment for technological lines and series production, it is also important that VYBO Electric operates in a system where ISO certificates are a natural part of manufacturing and inspection processes. For purchasing teams and technical departments, this means better traceability, consistent deliveries and easier inclusion of the motor in internal qualification procedures. In industry, these factors are often just as important as output itself.
Industrial applications for demanding drive technology
This motor is suitable for various industrial applications requiring high torque, stable speed and durable construction. In practice, it is particularly useful in the following equipment:
- Crushing lines in stone processing.
- Centrifugal pumps for water-management systems.
- Ventilation systems for large halls.
- Flue-gas extraction units in metallurgy.
- Belt conveyors in quarry operations.
- Raw-material processing mills.
- Compressor stations for industrial networks.
- Pressing lines in metalworking.
- Mixing reactors in chemical production.
- Extruders in plastics production.
- Drying drums in material processing.
- Winding machines in the paper industry.
- Separators in recycling technologies.
- Process mixers in production tanks.
VYBO Electric prepares solutions for operations that need a reliable foundation for long production cycles and precisely controlled loads. If you need a motor for a new project or a replacement in existing technology, contact us.