Three-phase electric motor: H17R-355-8 280KW 6000V 50HZ
| Basic technical data | |
| Motor type | H17R 355-8 |
| Rated power (kW) | 280 |
| Frame size (mm) | 355 |
| Number of poles | 8 |
| Rated speed (rpm) | 742 |
| Frequency (Hz) | 50 |
| Electrical parameters | |
| Rated voltage (V) | 6 000 |
| Connection | Y |
| Rated current (A) | 36,1 |
| Efficiency at 100% load (%) | 94,9 |
| Power factor at 100% load | 0,79 |
| Starting and torque characteristics | |
| Rated torque (Nm) | 3604 |
| Locked-rotor torque ratio (LRT/RLT) | 1,0 |
| Breakdown torque ratio (BDT/RLT) | 2,1 |
| Locked-rotor current ratio (LRA/RLA) | 4,8 |
| Rotor moment of inertia (kg·m²) | 9,1 |
| Accessories | |
| 6 x PT100 in winding | |
| 1 x PT100 in NDE bearing | |
| 1 x PT100 in DE bearing | |
| Anti-condensation heater 230 V | |
| 3 x PTC thermistor | |
| 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, Soft-starter |
| Direction of rotation | Both |
| Vibration (mm/s) | 2.8 |
| Rotor cage | copper bar |
| Terminal box type | VYBO CB1-HV |
| 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 | 3510 kg |
| Colour | RAL7030 |
| Paint finish | shiny |
| Bearings and lubrication | |
| DE/NDE bearings | 6322-C3/6322-C3 |
| Lubricant | Li based, no.2 class |
The design of the H17R 355-D-8-6 model delivers compact power for technologies that must operate stably even under high load. This 700 rpm electric motor with an output of 280 kW is designed for operations where a long duty cycle, precise operating reserve and reliable starting within heavy technological units are expected from the drive.
The copper rotor made of copper strip helps maintain low losses and good thermal resistance even during long-term loading. In practice, this means less rotor heating, more stable energy transmission to the shaft and longer service life during repeated operating cycles. At the same time, the three-phase electric motor fits industrial installations better where predictable starting and smooth operation without unnecessary maintenance intervention are required.
700 rpm electric motor for drives with long service life
With a 355 mm frame size, the design gains an installation base that fits well into machine assemblies, pumping blocks and transmission units. The 8-pole electric motor provides suitable speed characteristics for applications where high torque in a lower speed range is important. For operators of large factories, energy efficiency is also important because every kilowatt-hour saved in continuous operation translates into lower operating costs.
IE4 efficiency for demanding industrial drives
The IE4 Super Premium efficiency class helps in long-term applications where thermal behaviour and drive economy under year-round load are decisive. This high-voltage motor is suitable for operations that monitor energy consumption, grid stability and reliability during repeated starts. As a result, it is suitable for solutions where an OEM manufacturer needs to design a unit with reserve capacity for real industrial conditions.
- Large centrifugal fans in technological blocks.
- Process pumps for cooling and media circulation.
- Compressor stations in the energy sector and compressed-air production.
- Main conveyors with continuous operation.
- Mills and agitators in processing plants.
- Crushers in stone-processing and recycling technology.
- Extruders in plastics production.
- Rolling and winding lines in metallurgy.
- Turbo fans and flue-duct systems in large factories.
Advanced temperature monitoring for winding and bearing protection
Advanced temperature monitoring with elements in both the winding and bearing locations helps detect deviations early that would otherwise remain hidden until service intervention. A weight of 3510 kg is also important for operation, supporting robust installation in the technological unit, while a rotor moment of inertia of 9,1 kg·m² contributes to running stability under load. DE 6322-C3 and NDE 6322-C3 bearings are selected to support long-term reliability in industrial applications.
Service equipment for predictable operation
Accessories are also available to assist with machine-condition monitoring and protection during shutdowns. The customer receives 6 x PT100 in the winding, 1 x PT100 in the NDE bearing, 1 x PT100 in the DE bearing, an anti-condensation heater and 3 x PTC thermistor, simplifying integration into control systems and service standards of large operations. VYBO Electric operates as a proven manufacturer and distributor of industrial-drive solutions where long service life, precise protection and stable output are required. Take advantage of the offer for assemblies that need reliable output, temperature control and economical operation.