Three-phase electric motor: H27R-4501-6 710KW 6000V 50HZ
| Basic technical data | |
| Motor type | H27R 4501-6 |
| Rated power (kW) | 710 |
| Frame size (mm) | 450 |
| Number of poles | 6 |
| Rated speed (rpm) | 992 |
| Frequency (Hz) | 50 |
| Electrical parameters | |
| Rated voltage (V) | 6000 |
| Connection | Y |
| Rated current (A) | 82,9 |
| Efficiency at 100% load (%) | 95,1 |
| Power factor at 100% load | 0,87 |
| Starting and torque characteristics | |
| Rated torque (Nm) | 6835 |
| Locked-rotor torque ratio (LRT/RLT) | 1,00 |
| Breakdown torque ratio (BDT/RLT) | 2,0 |
| Locked-rotor current ratio (LRA/RLA) | 5,5 |
| Rotor moment of inertia (kg·m²) | 37 |
| Load moment of inertia (kg·m²) | 1040 |
| 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 | 4380 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) |
In heavy industrial operation, the result depends not only on output but also on how efficiently the motor handles long-term loading, starts and adverse environments. The H27R 4501-6-6 model in the 710 kW version is designed for applications where a 1000 rpm electric motor must deliver stable torque with high availability while limiting energy losses in continuous operation.
The H27R-HD-Modular series uses a closed cooling circuit with a heat exchanger and IC611 air-to-air cooling, keeping the inside of the motor protected from dust and more aggressive ambient air. Combined with IE4 Super Premium efficiency, this concept supports economical operation in high-power lines where every unnecessary watt means higher costs. VYBO Electric also uses VPI impregnation of the stator winding in this series, increasing resistance to moisture, vibration and contaminants.
Energy stability at a rated 992 rpm
For OEM designers and maintenance teams in large factories, it is important that the drive behaves predictably under continuous load. This six-pole electric motor reaches a rated speed of 992 rpm, rated torque of 6835 Nm and rated current of 82,9 A. Efficiency of 95,1 % together with a power factor of 0,87 helps the motor operate with lower losses even where stable output is required over the long term. Particularly in the category of HV electric motors, such a combination of parameters is often decisive when designing the entire drive.
It is also useful to know the starting ratios for the power supply and protection components. Starting torque reaches 1 times the rated torque, breakdown torque 2 times the rated torque and starting current 5,5 times the rated current. These data help when designing starting, sizing supply conductors and coordinating protection, especially where high-voltage electric motors operate in long technological lines with strict continuity requirements.
Design prepared for demanding operating conditions
H27R-HD-Modular motors are equipped with insulation class F and temperature rise class B, providing reserve for longer operation under stable load. Package weight of 4380 kg reflects the robust design intended for industrial installations where solid mounting and high mechanical resistance are expected. Rotor inertia of 37,0 kg·m² and load inertia of 1040,0 kg·m² provide an important basis for calculating the dynamics of starting, braking and protection of transmission interfaces. DE bearing NU228-C3+6030-C3 and NDE bearing NU228-C3 complete an assembly prepared for long-term industrial use.
Use in high-load technological units
In environments requiring a reliable drive at 6000 V, this 1000 rpm electric motor is used primarily in applications with continuous operation and high energy demand. Thanks to closed cooling and higher efficiency, it is suitable where dusty environments, corrosive vapors or thermally demanding conditions are combined with a requirement for long bearing and insulation life.
- Main cooling-circuit pumps in power generation.
- Process pumps in chemical plants.
- Fans for dust separation in cement plants.
- Fans for drying lines in the paper industry.
- Main blowers for steelmaking units.
- Mills and crushing lines in mining.
- Drives for compressor stations handling industrial media.
- Extruders and mixing lines in polymer processing.
- Transport belts for bulk materials in large operations.
- Agitators and mixers in petrochemical reactors.
- Rolling stands in metallurgical lines.
- Drainage assemblies in paper and pulp operations.
- Drives for large screw conveyors in raw-material warehouses.
- Process cutting and calibration lines with high operating loads.
A sensible choice for long drive life
When designing technology, it is worthwhile to consider not only rated output but also thermal reserve, service accessibility and resistance to contamination. The IC611 solution keeps the internal air clean and reduces the risk of fouling, while VPI impregnation supports winding stability during vibration and repeated loads. For the operator, this means fewer unplanned shutdowns and better predictability of costs over a long time horizon.
If you need a robust drive for a technological unit that must operate economically, reliably and in demanding conditions, order the H27R 4501-6-6 today. VYBO Electric prepares a solution for rapid deployment and for projects where decisions are made without unnecessary delay.