Three-phase electric motor: H27R-3552-6 315KW 6000V 50HZ
| Basic technical data | |
| Motor type | H27R 3552-6 |
| Rated power (kW) | 315 |
| 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) | 37,5 |
| Efficiency at 100% load (%) | 94,3 |
| Power factor at 100% load | 0,86 |
| Starting and torque characteristics | |
| Rated torque (Nm) | 3039 |
| 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) | 13,4 |
| Load moment of inertia (kg·m²) | 478 |
| 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 | 2550 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 H27R series provides a solution for operations requiring high output, stable operation and lower energy losses. The H27R 3552-6-6 model with an output of 315 kW is designed as a 900 rpm electric motor for energy-intensive technologies where reliable torque delivery and long-term economy are decisive. In drive technology, it is a choice for applications where both the cost per kilowatt-hour and equipment availability during continuous operation are monitored.
IE4 efficiency for lower losses in large drives
H27R motors feature a design that uses IE4 Super Premium efficiency and helps limit unnecessary thermal losses during prolonged loading. The three-phase electric motor operates with a power factor of 0,86 and efficiency of 94,3 %, supporting economical use in highly utilized lines. For the operator, this means lower energy resistance in daily service and better economics during long-term operation.
Welded steel frame for rigidity and easier handling
The motor design uses a welded steel frame that combines high rigidity with easier handling during transport and installation of large machines. This platform is also suitable for the 6000 V voltage level, where emphasis is placed on frame strength, precise mounting and stable behavior under dynamic load. The H27R series is therefore appreciated by OEM integrators who need a robust foundation for long-term use.
Starting reserve and parameters for starting-system design
When designing starting and protection, rated current of 37,5 A, rated torque of 3039 Nm and starting characteristics are important, giving the designer sufficient scope for power-supply sizing. Starting torque reaches 1 times the rated torque, breakdown torque 2,2 times the rated torque and starting current 5,6 times the rated current. Such data facilitate selection of protection components for technologies with higher inertia.
Precise bearing arrangement and operation without unnecessary downtime
The H27R 3552-6-6 model uses 6322-C3 bearings on both the DE and NDE sides, supporting stability of the rotating part at a rated speed of 990 rpm. Rotor inertia of 13,4 kg·m² and load inertia of 478,0 kg·m² are important in applications with substantial mechanical reserve and when coordinating starting with downstream technology. Insulation class F and temperature rise B complete the framework for safe long-term loading.
Thermal supervision and monitoring for reliable operation
The H27R series uses standard thermal protection and monitoring that helps track the condition of the winding and bearings during operation. Protection against condensation and the ability to keep the motor ready to start after shutdown are also important for long-term operation of large units. The H27R 3552-6-6 therefore naturally fits into technological units where stability, service reliability and monitoring of operating temperatures are expected.
Use in heavy industrial applications
This 6-pole electric motor is used in raw-material mills, compressor stations, pumping units for water management, heavily loaded conveyors, mixers for the chemical industry, fan units for power generation, granulation lines and heavy crushing equipment. In these operations, its stable speed and high output are utilized where reliable process continuity and precise linkage to downstream technologies are required.
For large factories and OEM units
For equipment manufacturers and plant operators alike, a motor that simplifies design, installation and servicing is important. Package weight of 2550 kg corresponds to the robust equipment class, while the design helps maintain good handling characteristics during integration into the technology. With the H27R series, VYBO Electric builds on experience that helps deliver solutions for long-term industrial use. Contact us for technical consultation, accessory selection and a fast quotation.