Three-phase electric motor: H17R-355-2 450KW 6000V 50HZ
| Basic technical data | |
| Motor type | H17R 355-2 |
| Rated power (kW) | 450 |
| Frame size (mm) | 355 |
| Number of poles | 2 |
| Rated speed (rpm) | 2977 |
| Frequency (Hz) | 50 |
| Electrical parameters | |
| Rated voltage (V) | 6 000 |
| Connection | Y |
| Rated current (A) | 50 |
| Efficiency at 100% load (%) | 95,6 |
| Power factor at 100% load | 0,91 |
| Starting and torque characteristics | |
| Rated torque (Nm) | 1444 |
| Locked-rotor torque ratio (LRT/RLT) | 0,70 |
| Breakdown torque ratio (BDT/RLT) | 2,8 |
| Locked-rotor current ratio (LRA/RLA) | 6,6 |
| Rotor moment of inertia (kg·m²) | 3,7 |
| 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 | 3215 kg |
| Colour | RAL7030 |
| Paint finish | shiny |
| Bearings and lubrication | |
| DE/NDE bearings | 6317-C3/6317-C3 |
| Lubricant | Li based, no.2 class |
Model H17R-355-C-2-6 from VYBO Electric is a 2900 rpm electric motor designed for applications where compact output, load stability and long operating intervals without unnecessary shutdowns are decisive. This high-voltage electric motor with an output of 450 kW will appeal to operators of large factories as well as OEM manufacturers of technological systems who need a solution prepared for continuous operation in demanding drive-technology conditions. The H17R Compact PRO-HV series is designed around direct transfer of output into the process, where what matters is not marketing wording but real operating reliability.
2900 rpm electric motor for smooth operation of heavy-duty drives
The rated speed of 2977 rpm gives the drive reserve for machines that operate with variable loads and need to maintain stable performance without a drop in output. Rated torque of 1444 Nm supports both starting and subsequent steady-state operation in technological systems where precise coordination of transmissions, pumps or fan assemblies is emphasised. In practice, this provides a reliable basis for a two-pole electric motor that is particularly useful in industrial applications where high dynamics and precise response to load changes are expected.
The internal arrangement is based on a copper rotor design that helps reduce losses and better withstand thermal load during long-term operation. This type of design is important for operations where the equipment is not used only at peak times but works in repeated cycles throughout the entire shift. 6317-C3 bearings on both the DE and NDE sides help maintain operating reliability in heavy industrial service while supporting long service life of the entire assembly.
Copper rotor and long service life in continuous operation
One of the main reasons this three-phase electric motor is suitable for heavy production is its rotor with copper strip. This solution contributes to lower rotor losses, higher resistance to temperature fluctuations and stable behaviour under prolonged load. The operator therefore gains a motor that handles repeated starts and long operating periods better without increasing the need for service interventions due to overheating or excessive mechanical stress.
Insulation class F together with temperature rise B provides room for safe operation in environments where drives are installed close to process heat sources or in enclosed operating blocks. A weight of 3215 kg reflects a robust construction suitable for permanent mounting in machine systems where minimal relocation flexibility and maximum installation stability are expected. A rotor moment of inertia of 3,700 kg·m² supports drive behaviour during starting and transient states, which is important when controlling large units with higher mechanical inertia.
IE4 efficiency for economical operation of technology
In large factories, drive economics are evaluated through total consumption over years of operation rather than through a single output figure. This is where IE4 Super Premium efficiency brings a practical benefit because it helps limit energy losses in demanding industrial drives and improves the balance of every kilowatt-hour drawn from the distribution system. A power factor of 0,91 also supports sensible sizing of the power-supply infrastructure and lower loading of the electrical network across the entire production line.
Rated current of 50 A is a suitable basis for power-supply design in technological systems where stability is monitored even under prolonged load. Starting current with an Ist/In ratio of 6,6 % provides important information when designing protection and coordinating the starting of several drives in one production node. Breakdown torque with a Tmax/Tn ratio of 2,8 % and starting torque with a Tst/Tn ratio of 0,7 % are values that must be considered in practice when selecting the application, especially if the motor is part of a chain with higher inertia and a requirement for smooth acceleration.
Frequency selection for international projects
For OEM projects and export-oriented technologies, the option to select the frequency is also important because the same motor can be incorporated into operations with different network standards and expectations for process control. This flexibility simplifies integration into machine assemblies intended to operate both in Europe and elsewhere and allows designers to work with one solution across a broader portfolio of customer projects.
When designing the system, it is also appropriate to consider accessories that expand diagnostic capabilities and support machine protection during long-term deployment. Available equipment includes 6xPT100 in the winding, 1xPT100 in the NDE bearing, 1xPT100 in the DE bearing, an anti-condensation heater and 3xPTC thermistors. Such equipment makes it easier to monitor temperature conditions in real time and helps prevent conditions that could limit technology availability during critical production cycles.
Industrial applications for large technologies and OEM assemblies
The motor is suitable for operations where continuous mechanical work and a precisely designed drive chain are decisive. Typical uses include the following applications:
- Drive for a large centrifuge in chemical processing of raw materials.
- Compressor drive in a process line for compressed air for a production site.
- Pump drive in a cooling-water circulation system for metallurgical operation.
- Mill drive in cement or mineral material processing.
- Fan drive in an extraction system for an incinerator or dust filtration.
- Extruder drive in a line for processing polymers and granules.
In these applications, the combination of robust construction, low losses and performance reserve required by machine manufacturers for responsible sizing of the entire drive is fully utilised. The high-voltage electric motor H17R-355-C-2-6 therefore provides a technical basis for projects where long service life, operating continuity and efficient use of energy in every production cycle are monitored.
VYBO Electric supplies a solution with an emphasis on practical operation, service predictability and technical compatibility with large industrial assemblies. Take advantage of the offer for a motor that combines compact output with durability suitable for demanding industrial applications.