Three-phase electric motor: H27R-4502-4 1000KW 6000V 50HZ
| Basic technical data | |
| Motor type | H27R 4502-4 |
| Rated power (kW) | 1000 |
| Frame size (mm) | 450 |
| Number of poles | 4 |
| Rated speed (rpm) | 1490 |
| Frequency (Hz) | 50 |
| Electrical parameters | |
| Rated voltage (V) | 6000 |
| Connection | Y |
| Rated current (A) | 113,3 |
| Efficiency at 100% load (%) | 95,7 |
| Power factor at 100% load | 0,89 |
| Starting and torque characteristics | |
| Rated torque (Nm) | 6409 |
| Locked-rotor torque ratio (LRT/RLT) | 0,70 |
| Breakdown torque ratio (BDT/RLT) | 2,0 |
| Locked-rotor current ratio (LRA/RLA) | 5,5 |
| Rotor moment of inertia (kg·m²) | 24 |
| Load moment of inertia (kg·m²) | 444 |
| 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 | 4560 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) |
Higher efficiency in continuous operation is essential wherever energy costs and technology availability are decisive. The H27R 4502-4-6 model with an output of 1000 kW provides stable operation for large drives, helping reduce losses in extensive operating regimes and supporting efficient production in heavy industry. This electric motor is designed as a robust three-phase electric motor for applications where long service life, reliable starting and precisely defined operating conditions are expected.
Energy savings in large drives with IE4 class
High efficiency of 95,7 % and a power factor of 0,89 mean that the motor converts supplied energy into mechanical work more effectively even during long working cycles. In practice, this brings a noticeable improvement in economy in operations where every kilowatt-hour is monitored. H27R 4502-4-6 therefore fits the high-voltage industrial drives segment where stable output without outages and an emphasis on long-term efficiency are expected from the motor.
Frame design for installation of large machines
The welded steel frame provides high rigidity while maintaining a more favourable weight characteristic than traditional massive castings. For equipment with a package weight of 4560 kg, this simplifies transport, installation and final alignment on the foundation. The frame also provides good conditions for operation in demanding environments where mechanical durability and mounting stability are monitored. This 4-pole electric motor is suitable for machines operating under high load that need a rigid base without unnecessary structural oversizing.
- Rated current of 113,3 A supports power-supply and protection design for long-term loading.
- A rated speed of 1490 rpm is suitable for drives requiring medium speed and high torque.
- Rated torque of 6409 Nm provides reserve for starts and stable engagement under load.
- Rotor inertia of 24,0 kg·m² simplifies evaluation of starting and braking dynamics.
- Load inertia of 444,0 kg·m² is important when sizing the coupling, gearbox and starting system.
Starting and protection for heavy technologies
When designing starting, start-up parameters help when selecting contactors, a soft starter or a frequency converter within the technologically permitted operating range. Starting torque reaches 0,7 times the rated torque, breakdown torque 2 times the rated torque and starting current 5,5 times the rated current, which is important for assessing the grid, protection and torque reserve. When used in higher-voltage supply systems, including 6000 V, it is advisable to allow for precise protection settings and monitoring of thermal conditions during starting.
Temperature and bearing monitoring in continuous operation
Standard thermal protection and monitoring help maintain control over motor condition during long operating periods and load fluctuations. Insulation class F combined with temperature rise B provides a suitable basis for operation in demanding environments where reliable thermal stability is expected. The design also includes DE bearings NU228-C3+6030-C3 and NDE bearing NU228-C3, which are suitable for large industrial assemblies focused on precise mounting and long service intervals.
Typical deployment in production and power generation
H27R 4502-4-6 is used with ore crushers, pumping units for water management, large compressors, mills in cement plants, conveyors with high inertia, fans in technological blocks and mixing lines for the chemical industry. In each of these cases, stable torque, high efficiency and the mechanical durability of the frame help maintain operation at the required pace without unnecessary downtime. Monitoring of condensation and heat distribution in the winding is also appropriate, especially after long shutdowns and during restart.
If you need to verify the motor’s suitability for a specific technology, contact us.
