Three-phase electric motor: H17R-355-8 200KW 6000V 50HZ
| Basic technical data | |
| Motor type | H17R 355-8 |
| Rated power (kW) | 200 |
| Frame size (mm) | 355 |
| Number of poles | 8 |
| Rated speed (rpm) | 739 |
| Frequency (Hz) | 50 |
| Electrical parameters | |
| Rated voltage (V) | 6 000 |
| Connection | Y |
| Rated current (A) | 26,2 |
| Efficiency at 100% load (%) | 94,5 |
| Power factor at 100% load | 0,78 |
| Starting and torque characteristics | |
| Rated torque (Nm) | 2585 |
| Locked-rotor torque ratio (LRT/RLT) | 1,2 |
| Breakdown torque ratio (BDT/RLT) | 2,4 |
| Locked-rotor current ratio (LRA/RLA) | 5,4 |
| Rotor moment of inertia (kg·m²) | 6,8 |
| 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 | 3270 kg |
| Colour | RAL7030 |
| Paint finish | shiny |
| Bearings and lubrication | |
| DE/NDE bearings | 6322-C3/6322-C3 |
| Lubricant | Li based, no.2 class |
Copper rotor for long service life gives this solution exactly what large operations need most: compact power in a reliable body for long production cycles. The H17R 355-A-8-6 model with an output of 200 kW is designed as a 700 rpm electric motor that maintains smooth engagement even under loads typical of heavy technological units.
Copper rotor helps maintain operation without unnecessary downtime
A copper rotor alloy works inside, helping limit losses while withstanding higher thermal stress under long-term load. This is precisely why the motor is suitable for lines where long operation without frequent maintenance intervention is expected from the drive. For factory operators, it is important that a three-phase electric motor of this type maintains stable output even during repeated starts and more sudden load changes.
In the 6 kV industrial drives segment, reserve capacity is expected to withstand real manufacturing conditions, not only laboratory operation. The design with a 355 mm frame size simplifies integration into existing assemblies while leaving room for firm mounting, more precise balancing and a longer service interval. VYBO Electric draws on years of experience with this series, reflected in its emphasis on operational reliability.
IE4 efficiency brings lower losses during long operation
IE4 Super Premium efficiency is practical when the motor operates at high utilization for a large part of the day. In such a mode, savings are reflected not only in consumption but also in lower thermal stress within the assembly. For OEM manufacturers of large technological units, this is an important argument when designing equipment where the efficiency of the entire line, not only one node, is monitored.
This platform also performs well in assemblies described as a high-voltage electric motor, where compatibility with heavy drives and long-term operational stability are decisive. An eight-pole electric motor naturally fits applications with lower speeds and higher torque, which is important in practice for technology with greater inertial loads.
Special protection increases reliability in dusty and humid environments
Special protection for demanding environments helps protect the motor where dust, humidity or splashing water are present. Depending on the project, an IP56, IP65, IP66 or IP67 version can be selected, allowing the motor to be adapted to the specific workplace without compromising mechanical protection. For large factories, such a choice is particularly important where the machine is located close to the process rather than in a separate machine room.
Accessories are also available for more precise condition monitoring, simplifying supervision of the winding and bearings. In practice, this is particularly helpful in applications with higher thermal load and predictive-maintenance requirements.
- 6xPT100 in the winding.
- 1xPT100 in the NDE bearing.
- 1xPT100 in the DE bearing.
- Anti-condensation heater.
- 3xPTC thermistor.
Use in production units with high torque requirements
Thanks to rated torque of 2585 Nm, the motor is suitable for drives where a heavy mechanism must be started and kept running reliably. Low rated current of 26,2 A supports power-supply design and simplifies sizing of the machine’s entire electrical section. For integrators, it is also important that the rotor moment of inertia of 6,8 kg·m² assists in designing starting dynamics.
Such a solution is used in grinding mills, belt conveyors for bulk materials, pumping units for process media, fan stations for process ventilation, mixing tanks with high resistance, raw-material crushers, extruders for the plastics industry and compressor assemblies with long operating cycles. In each of these applications, the same thing is valued: the motor maintains a stable production rhythm and reduces the risk of unplanned downtime.
Sensible choice for long-term operation and service reliability
The 6322-C3 bearing arrangement on both the DE and NDE sides supports stable operation under higher loads and helps maintain running accuracy over a long period. Insulation class F together with temperature rise B create reserve capacity valued especially by operations with continuous schedules. Combined with efficiency of 94,5 % and a power factor of 0,78, the operator gets a drive prepared for integration into demanding production without unnecessary downtime.
If you are looking for a solution for large technological units, the 700 rpm electric motor in the H17R 355-A-8-6 version is prepared to support both output and service discipline in your operation. Take advantage of the offer from VYBO Electric and move your drive toward more stable long-term operation.
Parameters that help with drive design
For designers and maintenance teams, it is important that the motor operates at a rated speed of 739 rpm and has a robust design with a weight of 3270 kg. These values help when designing foundations, couplings, transmission connections and service handling. When the motor is integrated correctly into the technology from the beginning, the operation gains a lower risk of vibration, more precise starts and longer service life of downstream components.

