Three-phase electric motor: H27R-4504-2 1250KW 6000V 50HZ
| Basic technical data | |
| Motor type | H27R 4504-2 |
| Rated power (kW) | 1250 |
| Frame size (mm) | 450 |
| Number of poles | 2 |
| Rated speed (rpm) | 2986 |
| Frequency (Hz) | 50 |
| Electrical parameters | |
| Rated voltage (V) | 6000 |
| Connection | Y |
| Rated current (A) | 137 |
| Efficiency at 100% load (%) | 96,8 |
| Power factor at 100% load | 0,91 |
| Starting and torque characteristics | |
| Rated torque (Nm) | 3998 |
| Locked-rotor torque ratio (LRT/RLT) | 0,70 |
| Breakdown torque ratio (BDT/RLT) | 2,9 |
| Locked-rotor current ratio (LRA/RLA) | 6,9 |
| Rotor moment of inertia (kg·m²) | 16,6 |
| Load moment of inertia (kg·m²) | 77,7 |
| 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 | 4900 kg |
| Colour | RAL7030 |
| Paint finish | shiny |
| Bearings and lubrication | |
| DE/NDE bearings | 6322-C3/6322-C3 |
| Lubricant | Lithium-based grease No. 2 (temperature class) |
The concept of this drive itself already delivers operating-cost savings. The H27R 4504-2-6 model with an output of 1250 kW is designed for continuous loading in large technologies where stable running, high efficiency and low losses during long production cycles are decisive.
In practice, energy efficiency of 96,8 % and a power factor of 0,91 support sensible sizing of the power supply and transformer branches. This high-voltage electric motor operates at a rated current of 137 A, reaches 3998 Nm and, when starting is designed, provides starting torque of 0,7 times the rated torque, breakdown torque of 2,9 times the rated torque and starting current of 6,9 times the rated current.
2900 rpm electric motor for reliable output in continuous operation
H27R 4504-2-6 belongs among drives that perform well where high availability and long service intervals are expected. The designation 2-pole electric motor corresponds to the nature of applications with higher speeds and suitable dynamics for pumps, compressors and technological units.
Frame design reduces handling requirements
The welded steel frame provides high rigidity at a lower weight than a cast-iron solution, which is beneficial during transport, installation and precise alignment of the motor in machinery systems. The closed cooling circuit with IC611 air-to-air cooling maintains a clean internal environment and increases usability in dusty or corrosive operations.
- Suitable for driving large centrifugal pumps in power generation and water management.
- Used in process fans with high volumetric flow.
- Supports deployment in compressor stations for process air.
- Suitable for agitators in the chemical and petrochemical industries.
- Helps drive mixing units in pulp and paper mills.
- Used for ore and bulk-material conveyors in mining.
- Deployed in crushers and mills for heavy raw-material processing.
- Supports operation of rolling lines in metallurgy.
- Used in extruders for the plastics industry.
- Suitable for rotary dryers in material processing.
- Delivers stable output in cooling towers and circulation circuits.
- Well suited as a drive for extraction and filtration systems.
- Supports technological lines in sugar and starch plants.
- Used in heavy mixing and homogenisation lines.
Bearing arrangement and rotor system for long service intervals
Copper rotor bars reduce electrical losses and help maintain thermal reserve even under high loading. 6322-C3 bearings on both the DE and NDE sides support stable operation with high rotor inertia of 16,6 kg·m² and load inertia of 77,7 kg·m², which is important when starting heavy technological systems.
Parameters suitable for industrial power supply and protection
Insulation class F and temperature rise B provide suitable reserve for operation in demanding conditions and under long-term loading. A package weight of 4900 kg also confirms the robust platform intended for large factories, process lines and energy drives where stability, service availability and reliable output are expected.
If you are looking for a solution for a demanding industrial drive, take advantage of the VYBO Electric offer and obtain a motor that delivers higher operating confidence and lower costs over the complete life cycle.
Deployment in heavy industry with an emphasis on long-term benefit
This motor class performs well in applications where continuous operation, ease of integration and resistance to operating fluctuations are priorities. With correctly designed power supply and protection, it provides reserve for technological fluctuations without unnecessary losses and without excessive maintenance burden.
