Three-phase electric motor: H27R-3551-6 280KW 6000V 50HZ
| Basic technical data | |
| Motor type | H27R 3551-6 |
| Rated power (kW) | 280 |
| Frame size (mm) | 355 |
| Number of poles | 6 |
| Rated speed (rpm) | 991 |
| Frequency (Hz) | 50 |
| Electrical parameters | |
| Rated voltage (V) | 6000 |
| Connection | Y |
| Rated current (A) | 33,8 |
| Efficiency at 100% load (%) | 94,2 |
| Power factor at 100% load | 0,85 |
| Starting and torque characteristics | |
| Rated torque (Nm) | 2698 |
| Locked-rotor torque ratio (LRT/RLT) | 1,10 |
| Breakdown torque ratio (BDT/RLT) | 2,4 |
| Locked-rotor current ratio (LRA/RLA) | 6 |
| Rotor moment of inertia (kg·m²) | 12 |
| Load moment of inertia (kg·m²) | 448 |
| 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 | 2480 kg |
| Colour | RAL7030 |
| Paint finish | shiny |
| Bearings and lubrication | |
| DE/NDE bearings | 6322-C3/6322-C3 |
| Lubricant | Lithium-based grease No. 2 (temperature class) |
An energy-efficient drive reduces operating losses where continuous load and high reliability are decisive. The H27R 3551-6-6 model with an output of 280 kW is among the solutions designed for stable torque transmission in heavy industrial operation. In this class, a 1000 rpm electric motor is used especially where the technology requires smooth operation, precisely defined speed and long-term economy.
Clean internal circuit helps maintain output even in demanding environments
The H27R series uses IC611 air-to-air cooling, which supports separation of internal and external airflow through a closed cooling circuit with a heat exchanger. Such a solution increases suitability for dusty operations and environments with higher corrosive loads because the internal parts of the motor operate in a cleaner environment. For high-power drives, this provides more stable thermal conditions and reliably sustained output.
This design is also suitable where IE4 Super Premium efficiency is required. Higher efficiency helps limit energy losses during long-term operation, which is important in plants with high operating hours. With the H27R series, VYBO Electric combines economical operation with the durability expected by operators of large technological units.
Design supports long winding life and stable bearings
The stator winding is impregnated using VPI technology, which increases resistance to moisture, dust and vibration. For large motors, this means better protection of the insulation system and greater reserve during mechanically and thermally demanding cycles. Insulation class F and temperature rise B create favorable conditions for long-term operation in industrial duty.
The motor has a rated current of 33,8 A, power factor of 0,85 and efficiency of 94,2 %. Rated torque reaches 2698 Nm, starting torque reaches 1,1 times the rated torque, breakdown torque 2,4 times the rated torque and starting current 6 times the rated current. These data are important when designing power supply, protection and torque reserve in systems with high inertia.
Parameters facilitate correct drive and starting design
Package weight is 2480 kg, rotor inertia 12,0 kg·m² and load inertia 448,0 kg·m². The bearing on both the DE and NDE sides is 6322-C3, which simplifies service logic and helps in designing reliable long-term operation. This six-pole electric motor is therefore suitable for applications requiring robust mechanical construction and controlled dynamic behavior.
Industrial use with high reliability requirements
H27R 3551-6-6 is used in the following segments:
- Compressor drives in large manufacturing plants.
- Main fans in power generation and technological units.
- Pumping stations for water management and industrial circuits.
- Mills and crushing lines in raw-material processing.
- Textile and paper lines with continuous operation.
- Drives for conveyor systems with high inertia.
- Process equipment in the chemical and metallurgical industries.
High-voltage drive for integration into modern lines
In the category of HV electric motors, compatibility with the voltage level, thermal reserve and service strategy is important. This high-voltage electric motor is designed for a 6000 V power supply and provides a solution for operations requiring high output in a compact industrial format. In OEM projects, it helps simplify matching the drive with other parts of the technological unit.
If you are looking for a motor for stable operation with emphasis on efficiency, durability and thermal performance, the H27R series represents a sensible basis for long-term use. Order the H27R 3551-6-6 in time to ensure rapid project preparation and proceed with the installation and commissioning schedule without delay.
