Three-phase electric motor: H27R-4004-6 630KW 6000V 50HZ
| Basic technical data | |
| Motor type | H27R 4004-6 |
| Rated power (kW) | 630 |
| Frame size (mm) | 400 |
| Number of poles | 6 |
| Rated speed (rpm) | 991 |
| Frequency (Hz) | 50 |
| Electrical parameters | |
| Rated voltage (V) | 6000 |
| Connection | Y |
| Rated current (A) | 73,7 |
| Efficiency at 100% load (%) | 95 |
| Power factor at 100% load | 0,87 |
| Starting and torque characteristics | |
| Rated torque (Nm) | 6071 |
| Locked-rotor torque ratio (LRT/RLT) | 0,86 |
| Breakdown torque ratio (BDT/RLT) | 2,0 |
| Locked-rotor current ratio (LRA/RLA) | 5,2 |
| Rotor moment of inertia (kg·m²) | 27,2 |
| Load moment of inertia (kg·m²) | 893 |
| 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 | 3020 kg |
| Colour | RAL7030 |
| Paint finish | shiny |
| Bearings and lubrication | |
| DE/NDE bearings | 6326-C3/6326-C3 |
| Lubricant | Lithium-based grease No. 2 (temperature class) |
H27R 4004-6-6 delivers high energy efficiency in demanding operations where stable output and long-term reliability are decisive. This 900 rpm electric motor corresponds to the model with an output of 630 kW and is prepared for use on 6000 V networks where a precisely controlled drive for continuous production is required.
Lower losses and higher operating efficiency for large drives
IE4-level efficiency helps limit thermal losses in applications with high energy consumption, which translates into better economy during continuous operation. In large-factory environments, the H27R 4004-6-6 is therefore suitable where long-term energy efficiency is monitored without compromising torque performance.
Welded steel frame for rigidity and easier handling
The H27R-HD-Modular series design uses a welded steel frame that provides high rigidity while maintaining a favorable weight for transport and installation of large machines. With this type of solution, mechanical resistance remains important under continuous load as well as during larger dynamic torque changes.
Rated current of 73,7 A, power factor of 0,87 and efficiency of 95 % give designers a reliable basis for the design of power supply, protection and coordination with converters or direct starting. Starting torque reaches 0,86 times the rated torque, breakdown torque 2 times the rated torque and starting current 5,2 times the rated current, which is important when assessing network reserve and protection during starting.
Standard thermal protection and monitoring for long operating cycles
The H27R-HD-Modular series uses standard thermal protection and monitoring that support early monitoring of winding and bearing condition. In practice, this means better preparedness for long production cycles, reduced risk of unplanned shutdowns and convenient supervision of the motor’s thermal operating conditions.
Mechanical and bearing parameters for reliable integration
Package weight of 3020 kg, rotor inertia of 27,2 kg·m² and load inertia of 893,0 kg·m² facilitate precise sizing of starting and the power-supply system. 6326-C3 bearings on both the DE and NDE sides provide a unified solution for robust industrial use and simpler service logistics.
Typical industrial use in heavy technological units
This six-pole electric motor is suitable for drives where smooth operation, high availability and precise coordination with line technology are important.
- Main cooling-circuit pumps in large power-generation units.
- Fan stations for extraction and process ventilation in metallurgy.
- Crushers and mixing units in cement plants and raw-material processing.
- Compressor assemblies for process compressed air in chemical production.
- Drives for rolling and conveying lines in the metalworking industry.
- Pumping stations for heavily loaded water-supply and drainage systems.
H27R 4004-6-6 is suitable for operations requiring a robust three-phase electric motor with long service life, stable torque and a convincing contribution to energy savings at high output.
Advice for selection and project integration
When designing a drive, it is advisable to evaluate the load characteristics, required torque reserve and starting conditions so that the motor parameters and protection components can be fully utilized. With this series, VYBO Electric has long focused on practical construction for industrial use that is intended to operate reliably in real conditions.
Contact us for technical advice, selection of suitable accessories and a proposal for integrating the H27R 4004-6-6 motor into your project.