Three-phase electric motor: H27R-4001-8 355KW 6000V 50HZ
| Basic technical data | |
| Motor type | H27R 4001-8 |
| Rated power (kW) | 355 |
| Frame size (mm) | 400 |
| Number of poles | 8 |
| Rated speed (rpm) | 742 |
| Frequency (Hz) | 50 |
| Electrical parameters | |
| Rated voltage (V) | 6000 |
| Connection | Y |
| Rated current (A) | 44,2 |
| Efficiency at 100% load (%) | 94,6 |
| Power factor at 100% load | 0,82 |
| Starting and torque characteristics | |
| Rated torque (Nm) | 4569 |
| Locked-rotor torque ratio (LRT/RLT) | 1,10 |
| Breakdown torque ratio (BDT/RLT) | 2,1 |
| Locked-rotor current ratio (LRA/RLA) | 5,4 |
| Rotor moment of inertia (kg·m²) | 27 |
| Load moment of inertia (kg·m²) | 1370 |
| 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 | 2730 kg |
| Colour | RAL7030 |
| Paint finish | shiny |
| Bearings and lubrication | |
| DE/NDE bearings | 6326-C3/6326-C3 |
| Lubricant | Lithium-based grease No. 2 (temperature class) |
In heavy industrial operation, every percentage point of energy savings and every hour without downtime matters. The H27R 4001-8-6 model with an output of 355 kW is designed for processes where high torque, stable speed and long-term operational reliability must come together in one unit. This 700 rpm electric motor delivers high efficiency with a 6000 V power supply and helps keep operating costs under control even under continuous load.
Energy savings in heavy drives and stable network operation
H27R-HD-Modular in this version uses IE4 Super Premium efficiency, which reduces energy losses in high-power drives and supports economical continuous operation. The welded steel frame gives the structure high rigidity while maintaining a favorable weight for handling and installation of large motors. For the operator, this means lower thermal load, better stability during long operating cycles and greater potential return on investment in highly utilized applications.
- Rated current reaches 44,2 A at a rated torque of 4569 Nm.
- Rated speed of 742 rpm is suitable for slow-speed technological units with high torque reserve.
- Power factor of 0,82 supports power-supply and compensation design in industrial distribution systems.
- Efficiency of 94,6 % improves the drive’s energy profile under long-term load.
Straightforward connection into technological units
This three-phase electric motor is used in operations requiring a robust and reliable high-voltage drive, high thermal resistance and repeatable starting without unnecessary downtime. Standard thermal protection and monitoring expand supervision of the winding and bearings and improve safety when integrating into large technological lines. In line with the requirements of demanding factories, the H27R-HD-Modular series uses solutions that help keep the motor prepared for long operating cycles.
Design prepared for high loads
Starting torque reaches 1,1 times the rated torque, breakdown torque 2,1 times the rated torque and starting current 5,4 times the rated current. Such values are important when designing the power supply, protection and torque reserve in drives where heavy starting or frequent load changes are expected. H27R 4001-8-6 therefore fits solutions where predictable behavior is valued both at start-up and under steady load.
- Insulation class F and temperature rise class B support long-term thermal reserve.
- The winding and bearings can be monitored through standard thermal protection and sensors for operating supervision.
- The rotor has inertia of 27,0 kg·m², which helps when designing starting and control.
- A load with inertia of 1370,0 kg·m² should be assessed when designing the drive system.
Use in manufacturing processes with high demands
In practice, H27R 4001-8-6 is used in cement mills, pumping systems for power generation, compressor stations, conveyors for bulk materials, mixing and homogenization lines, rolling-mill drives and cleaning and drainage technologies in mining. In the HV electric motor category, it is a solution for operations requiring precisely defined output, high reliability and long service life without compromising operation of the production unit.
Reliable choice for OEM projects
Package weight of 2730 kg reflects the robustness of the assembly and is relevant for logistics when delivering large motors to production halls and installation sites. DE bearing 6326-C3 and NDE bearing 6326-C3 support operation in demanding conditions and complement the overall motor concept for long-term use. The H27R-HD-Modular series from VYBO Electric is prepared for projects where technical precision, stability and scope for long service life are expected. Contact us and receive technical support for selection, integration and delivery of the motor for your project.