Three-phase electric motor: H27R-3552-2 400KW 6000V 50HZ
| Basic technical data | |
| Motor type | H27R 3552-2 |
| Rated power (kW) | 400 |
| Frame size (mm) | 355 |
| Number of poles | 2 |
| Rated speed (rpm) | 2980 |
| Frequency (Hz) | 50 |
| Electrical parameters | |
| Rated voltage (V) | 6000 |
| Connection | Y |
| Rated current (A) | 46,5 |
| Efficiency at 100% load (%) | 95,6 |
| Power factor at 100% load | 0,87 |
| Starting and torque characteristics | |
| Rated torque (Nm) | 1282 |
| Locked-rotor torque ratio (LRT/RLT) | 1,00 |
| Breakdown torque ratio (BDT/RLT) | 3,0 |
| Locked-rotor current ratio (LRA/RLA) | 7,3 |
| Rotor moment of inertia (kg·m²) | 3,9 |
| Load moment of inertia (kg·m²) | 62,3 |
| 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 | 2300 kg |
| Colour | RAL7030 |
| Paint finish | shiny |
| Bearings and lubrication | |
| DE/NDE bearings | 6317-C3/6317-C3 |
| Lubricant | Lithium-based grease No. 2 (temperature class) |
The H27R 3552-2-6 electric motor with an output of 400 kW is designed for operations where stable performance, low energy consumption and long-term reliability are decisive. This 2900 rpm electric motor operates at a rated speed of 2980 rpm, has a rated current of 46,5 A, efficiency of 95,6 % and a power factor of 0,87, helping reduce operating losses during continuous loading of production lines and technological systems.
Higher efficiency during long production cycles
High IE4 efficiency supports economical continuous operation, which is especially important in applications with a high number of starts, long running periods and increasing demands on the energy balance. H27R 3552-2-6 is suitable for high-voltage industrial drives where precise power transmission, stable torque of 1282 Nm and sufficient reserve for starting and load changes are expected.
The welded steel frame provides high structural rigidity while also simplifying handling during transport and installation of larger motors into technological assemblies. A three-phase electric motor in this class is therefore suitable for systems where not only efficiency but also service accessibility and predictable behaviour under long-term load are important.
Safer starting and control of the thermal regime
When designing starting and protection, engineers will also appreciate starting torque reaching 1 times the rated torque, breakdown torque 3 times the rated torque and starting current 7,3 times the rated current. These values make it possible to correctly select the power supply, protective components and torque reserve for heavy starts, especially when the motor is part of dynamically loaded technological systems.
Standard thermal protection and monitoring increase confidence in continuous operation because the motor is prepared for monitoring the condition of the windings and bearings and for checking conditions that can affect drive service life. Insulation class F, temperature rise B and 6317-C3 bearings on both the DE and NDE sides support reliable operation even under higher thermal loading.
Precise sizing for large technological systems
The H27R 3552-2-6 model operates with rotor inertia of 3,9 kg·m² and load inertia of 62,3 kg·m², which simplifies start-up design and coordination with control and operating requirements. It is suitable wherever a precise and robust two-pole electric motor with stable performance is required for long-term deployment. VYBO Electric supplies a technical solution with an emphasis on service readiness and industrial practice.
Typical practical applications
The motor is used in the following areas:
- Main cooling-circuit pumps in the energy sector.
- Process fans in metallurgical and chemical plants.
- Compressor stations with continuous operation.
- Crushers and mills in the mining industry.
- Extruders and mixers in high-volume plastics production.
- Conveyor drives in extensive production lines.
- Drive units for technological systems from OEM manufacturers.
A solution for reliable delivery into production
A package weight of 2300 kg and the robust design are important when planning logistics, support and installation into frames of technological assemblies. If you need a motor for stable performance, long service life and sensible operating costs, contact us for a quotation and technical confirmation of suitability.