Three-phase electric motor: H27R-3553-6 355KW 6000V 50HZ
| Basic technical data | |
| Motor type | H27R 3553-6 |
| Rated power (kW) | 355 |
| Frame size (mm) | 355 |
| Number of poles | 6 |
| Rated speed (rpm) | 989 |
| Frequency (Hz) | 50 |
| Electrical parameters | |
| Rated voltage (V) | 6000 |
| Connection | Y |
| Rated current (A) | 42,3 |
| Efficiency at 100% load (%) | 94,4 |
| Power factor at 100% load | 0,86 |
| Starting and torque characteristics | |
| Rated torque (Nm) | 3428 |
| Locked-rotor torque ratio (LRT/RLT) | 0,90 |
| Breakdown torque ratio (BDT/RLT) | 2,0 |
| Locked-rotor current ratio (LRA/RLA) | 5,1 |
| Rotor moment of inertia (kg·m²) | 15 |
| Load moment of inertia (kg·m²) | 562 |
| 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 | 2610 kg |
| Colour | RAL7030 |
| Paint finish | shiny |
| Bearings and lubrication | |
| DE/NDE bearings | 6322-C3/6322-C3 |
| Lubricant | Lithium-based grease No. 2 (temperature class) |
In operations where continuous drive reliability and low lifetime costs are decisive, the H27R 3553-6-6 delivers exactly what large technologies require. This 900 rpm electric motor with an output of 355 kW is intended for demanding applications where stable operation, efficient energy use and a long service interval without unnecessary downtime are monitored.
Stable output for large industrial drives
The H27R-HD-Modular series is designed as a high-voltage electric motor for industrial units with emphasis on operational reliability. Rated current of 42,3 A, efficiency of 94,4 % and a power factor of 0,86 provide a good foundation for economical operation in systems where energy efficiency has a direct impact on total line costs. Rated torque of 3428 Nm provides sufficient reserve for stable load during steady operation.
Design that simplifies installation and operation
The welded steel frame provides high rigidity at a weight that is more favorable for transport and installation of large motors into the technology. Closed IC611 air-to-air cooling keeps the inside of the motor separated from surrounding dust and improves suitability for corrosive environments. The rotor cage made of copper strip supports lower losses, good thermal resistance and long service life during repeated thermal cycles.
The stator winding with insulation class F and temperature rise B is suitable for long-term loading in industrial duty. 6322-C3 bearings on both the DE and NDE sides are sized for robust operation with regard to radial load and shaft stability. Rotor inertia of 15,0 kg·m² and load inertia of 562,0 kg·m² are important when designing starting, protection and power-supply sizing.
Suitable use in heavy-duty technology
This six-pole electric motor is used where smooth transmission of power to large technological units is required and where structural durability in long-term operation is decisive. Starting torque reaches 0,9 times the rated torque, breakdown torque 2 times the rated torque and starting current 5,1 times the rated current, so protection and the starting strategy for the power-supply system can be precisely designed.
Industrial applications with high reliability requirements
The H27R 3553-6-6 motor is particularly suitable for the following operations:
- Main pumps in petrochemical and refinery lines.
- Fan units for power-generation units and boiler rooms.
- Compressor stations in the gas industry.
- Mill drives in cement plants and mineral processing.
- Ore conveyors in mines and raw-material processing plants.
- Extruders and mixing units in large-scale chemical production.
- Rolling and feed technologies in metallurgy.
- Large water-supply and drainage pumping stations.
For OEM manufacturers of large technological units, not only efficiency itself but also reliable integration into the project, service availability and consistent parameters for repeat deliveries are important. With the H27R-HD-Modular series, VYBO Electric offers a solution that supports long equipment life, reduces operating risks and helps limit maintenance costs. Take advantage of the offer and specify this motor for projects where reliable output with a significant operating benefit is required.