Three-phase electric motor: H27R-4503-8 710KW 6000V 50HZ
| Basic technical data | |
| Motor type | H27R 4503-8 |
| Rated power (kW) | 710 |
| Frame size (mm) | 450 |
| Number of poles | 8 |
| Rated speed (rpm) | 742 |
| Frequency (Hz) | 50 |
| Electrical parameters | |
| Rated voltage (V) | 6000 |
| Connection | Y |
| Rated current (A) | 85,6 |
| Efficiency at 100% load (%) | 95,4 |
| Power factor at 100% load | 0,84 |
| Starting and torque characteristics | |
| Rated torque (Nm) | 9138 |
| Locked-rotor torque ratio (LRT/RLT) | 0,7 |
| Breakdown torque ratio (BDT/RLT) | 1,8 |
| Locked-rotor current ratio (LRA/RLA) | 4,5 |
| Rotor moment of inertia (kg·m²) | 50 |
| Load moment of inertia (kg·m²) | 1850 |
| Accessories | |
| 6 x PT100 in windings | |
| 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 (S2, S3, S4 – S9 optional) |
| Load type | Parabolic or linear curve |
| Degree of protection | IP55 |
| Insulation class | F |
| Temperature rise class | B |
| Cooling method | IC611 (On request IC616, IC666) |
| Starting method | DOL, VFD, Soft-starter |
| Direction of rotation | Both |
| Vibration (mm/s) | 2.8 |
| Rotor cage | copper rotor bars |
| 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 | 4740 kg |
| Colour | RAL7030 |
| Paint finish | shiny |
| Bearings and lubrication | |
| DE/NDE bearings | NU228-C3+6030-C3/NU228-C3 |
| Lubricant | Lithium-based grease No. 2 (temperature class) |
Energy efficiency in this solution is designed for long working cycles, high loads and controlled operating costs. H27R 4503-8-6 with an output of 710 kW is among robust drives for large technological units where reliable output, stable speed and reserve for continuous operation are required. In the high-power unit category, it is a 750 rpm electric motor prepared for applications emphasizing efficiency and durability.
Closed cooling keeps the inside of the motor clean
The H27R-HD-Modular series uses IC611 air-to-air cooling, which supports clean internal motor air and helps maintain stable thermal conditions even where dust, aggressive vapors or higher humidity occur. IE4 Super Premium efficiency reduces energy losses in high-power drives and benefits operations that monitor long-term economy without compromising reliability.
The motor design also uses VPI impregnation of the stator winding, which increases resistance to vibration and contamination while supporting long insulation life in demanding operations. For high-voltage industrial drives, such winding protection is especially important where the motor operates continuously or under frequent process changes.
Parameters supporting starting and protection design
H27R 4503-8-6 operates with a rated current of 85,6 A, power factor of 0,84 and efficiency of 95,4 %. Rated torque of 9138 Nm provides the required force for demanding technological units, while starting torque reaches 0,7 times the rated torque, breakdown torque 1,8 times the rated torque and starting current 4,5 times the rated current. These data are important when designing the power supply, protection components and overall torque reserve.
- Rated speed of 742 rpm corresponds to typical use of an 8-pole electric motor in low-speed industrial assemblies.
- Insulation class F and temperature rise class B support safe operation during long shifts.
- Rotor inertia of 50,0 kg·m² helps when designing starting and braking dynamics.
- Load inertia of 1850,0 kg·m² is important when sizing the connection to the driven equipment.
- DE bearing NU228-C3+6030-C3 and NDE bearing NU228-C3 support the mechanical durability of the unit.
Use in heavy operations with a 6000 V power supply
This high-voltage electric motor is intended for a 6000 V network where stable operation and precisely sized protection are required. In practice, it is used to drive crushers, mills, fans, compressors, pumps, conveyors and mixing lines. It is also used in metallurgical operations, cement plants, power generation, water and waste management or in OEM assemblies of large technological units.
Design adapted to long-term loading
A frame size of 450 mm and package weight of 4740 kg confirm that this is a motor for robust industrial use. The H27R-HD-Modular series is prepared for integration into units where not only output but also service reliability, thermal stability and compatibility with demanding process modes are monitored. With this series, VYBO Electric builds on a solution that simplifies long-term operation without unnecessary compromises.
Solution for continuous operation without unnecessary losses
The combination of efficiency of 95,4 %, a power factor of 0,84 and closed cooling creates the conditions for economical operation in large factories and technological nodes with high energy consumption. If you are planning a new drive or replacement of an existing unit, discover the performance of the H27R-HD-Modular series and order H27R 4503-8-6 in time so that installation is ready without delay when deployment begins.