Three-phase electric motor: H27R-3554-6 400KW 6000V 50HZ
| Basic technical data | |
| Motor type | H27R 3554-6 |
| Rated power (kW) | 400 |
| Frame size (mm) | 355 |
| Number of poles | 6 |
| Rated speed (rpm) | 990 |
| Frequency (Hz) | 50 |
| Electrical parameters | |
| Rated voltage (V) | 6000 |
| Connection | Y |
| Rated current (A) | 47,6 |
| Efficiency at 100% load (%) | 94,5 |
| Power factor at 100% load | 0,86 |
| Starting and torque characteristics | |
| Rated torque (Nm) | 3859 |
| Locked-rotor torque ratio (LRT/RLT) | 1,00 |
| Breakdown torque ratio (BDT/RLT) | 2,2 |
| Locked-rotor current ratio (LRA/RLA) | 5,6 |
| Rotor moment of inertia (kg·m²) | 16 |
| Load moment of inertia (kg·m²) | 688 |
| 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 | 2665 kg |
| Colour | RAL7030 |
| Paint finish | shiny |
| Bearings and lubrication | |
| DE/NDE bearings | 6322-C3/6322-C3 |
| Lubricant | Lithium-based grease No. 2 (temperature class) |
A reliable energy balance is decisive for large drives, especially where continuous operation, high load and controlled losses are expected. The H27R 3554-6-6 model in the 400 kW version is designed for applications where a 1000 rpm electric motor must provide stable output, sufficient reserve and long-term operational reliability with a 6000 V power supply.
IC611 air-to-air cooling increases suitability for demanding environments
The H27R-HD-Modular series uses a closed cooling circuit with a heat exchanger that keeps the motor’s internal air separated from the surrounding area, making it better suited to dusty operations and corrosively loaded zones. This IC611 air-to-air cooling also supports longer-term temperature stability and reduces the risk of undesirable operating fluctuations during long working cycles. In practice, it is a solution suitable for operations where repeatability, clean cooling and predictable behavior under all-day load are expected from a high-power drive.
IE4 efficiency helps reduce energy losses during continuous operation
H27R-HD-Modular motors are designed with emphasis on IE4 Super Premium efficiency, which helps limit unnecessary losses during long-term operation and improves the economics of high-power lines. For operators of large factories and OEM manufacturers of technological units, this means a better ratio between delivered output and consumed energy, especially in applications where the motor is started only rarely but operates for long hours in steady-state mode. In this context, a high-voltage electric motor from this series is suitable where long-term return on investment is also monitored.
VYBO Electric uses VPI impregnation of the stator winding in this design, improving resistance to moisture, dust and vibration. The winding therefore retains its parameters better even in demanding industrial conditions where mechanical shocks, dust particles or long-term thermal loading are common. Mechanical stability of the rotating system is also important for this drive type, so the design takes into account rotor inertia of 16,0 kg·m² and load inertia of 688,0 kg·m², which helps when assessing starting and system dynamics.
Starting and mechanical parameters support starting-system design
This 6-pole electric motor operates at a rated speed of 990 rpm, rated current of 47,6 A and rated torque of 3859 Nm. When designing the power supply, protection and starting circuits, it is important to account for starting torque reaching 1 times the rated torque, breakdown torque 2,2 times the rated torque and starting current 5,6 times the rated current. Such data are valuable when sizing protection components, selecting the transformer and assessing torque reserve under load.
Typical operations where it performs without compromise
The design and parameters of this series are suitable for cement plants, mill lines, water pumping stations, compressor units, heavy conveyor systems and mixing technology units. In each of these operations, reliable running, clean cooling and efficiency play an important role in keeping operating costs under control even during long-term use.
Design prepared for long service in industry
H27R 3554-6-6 uses insulation class F and temperature rise B, providing favorable scope for stable operation in normal and more demanding conditions. The 6322-C3 bearing arrangement on both the DE and NDE sides supports long-term reliability in high-inertia systems and applications with high continuity requirements. Package weight of 2665 kg is also an indicative value for handling, storage and logistics planning within the plant.
If you need a high-voltage 1000 rpm electric motor combining output, efficiency and durable cooling, order the H27R 3554-6-6 model today. For large technological assemblies, availability and technical readiness of the solution are decisive, so it is advisable to act without delay.