Three-phase electric motor: H27R-3553-4 450KW 6000V 50HZ
| Basic technical data | |
| Motor type | H27R 3553-4 |
| Rated power (kW) | 450 |
| Frame size (mm) | 355 |
| Number of poles | 4 |
| Rated speed (rpm) | 1488 |
| Frequency (Hz) | 50 |
| Electrical parameters | |
| Rated voltage (V) | 6000 |
| Connection | Y |
| Rated current (A) | 51,4 |
| Efficiency at 100% load (%) | 95,1 |
| Power factor at 100% load | 0,89 |
| Starting and torque characteristics | |
| Rated torque (Nm) | 2888 |
| Locked-rotor torque ratio (LRT/RLT) | 0,90 |
| Breakdown torque ratio (BDT/RLT) | 2,3 |
| Locked-rotor current ratio (LRA/RLA) | 6 |
| Rotor moment of inertia (kg·m²) | 8,2 |
| Load moment of inertia (kg·m²) | 256 |
| 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 | 2600 kg |
| Colour | RAL7030 |
| Paint finish | shiny |
| Bearings and lubrication | |
| DE/NDE bearings | 6322-C3/6322-C3 |
| Lubricant | Lithium-based grease No. 2 (temperature class) |
Energy-efficient performance under high load is decisive for this solution. The H27R 3553-4-6 model with an output of 450 kW is designed for operations that need stable running at a rated speed of 1488 rpm while also keeping operating costs sensible. This 1500 rpm electric motor provides high efficiency of 95,1 % and a power factor of 0,89, helping reduce losses in the power supply and under long-term loading.
IC611 air-to-air cooling improves suitability for demanding environments
The closed cooling circuit with an IC611 heat exchanger keeps the motor interior separated from surrounding dust and corrosive contaminants, making it suitable where clean circulation and longer life of active components are priorities. Combined with insulation class F, temperature rise B and VPI impregnation of the stator winding, this creates a design that withstands vibration, moisture and demanding starting regimes well.
Parameters for power-supply, protection and torque-reserve design
When designing the drive, rated current of 51,4 A, rated torque of 2888 Nm and rotor inertia of 8,2 kg·m² are also important. Load inertia of 256,0 kg·m² requires careful starting design, especially if the system includes a long shaft line or large operating reserve. Starting torque reaches 0,9 times the rated torque, breakdown torque 2,3 times the rated torque and starting current 6 times the rated current, which is important when selecting starting, protective components and transformer reserve. In practice, this four-pole electric motor should also be assessed according to grid requirements because 6000 V places demands on protection coordination and cable routing.
The design corresponds to continuous operation in large technologies
Industrial systems particularly value the combination of IE4 Super Premium efficiency, robust bearing arrangement and precisely designed cooling. DE bearing 6322-C3 and NDE bearing 6322-C3 support stability during long-term operation, while a package weight of 2600 kg confirms the robust design for installation into large frames and foundations. For the operator, this means fewer unplanned shutdowns and better control over total energy costs.
Where this high-voltage drive is best applied
Typical deployment includes a high-voltage electric motor in lines and systems where high output, reliable controllability and long service life without frequent service intervention are required.
- Main fan drives in steelworks.
- Compressor stations for process air.
- Raw-water pumps in water management.
- Centrifugal pumps in chemical production.
- Mills for cement grinding.
- Aggregate crushers in quarries.
- Crushing lines in ore processing.
- Heavy-duty long-belt conveyors.
- Furnace fans in power generation.
- Rotary dryers in the paper industry.
- Dust-extraction systems for filtration technologies.
- Agitators in tanks with industrial media.
- Winding stations in metallurgical operations.
- Extruder drives in plastics production.
- Process agitators in high-capacity reactors.
If you need a motor for continuous operation with an emphasis on efficiency, cooling and compatibility with a large technological system, H27R 3553-4-6 is prepared for project deployment. Order it in good time to minimise downtime during planned expansion or drive replacement.