Three-phase electric motor: H27R-3554-8 315KW 6000V 50HZ
| Basic technical data | |
| Motor type | H27R 3554-8 |
| Rated power (kW) | 315 |
| Frame size (mm) | 355 |
| Number of poles | 8 |
| Rated speed (rpm) | 740 |
| Frequency (Hz) | 50 |
| Electrical parameters | |
| Rated voltage (V) | 6000 |
| Connection | Y |
| Rated current (A) | 38,7 |
| Efficiency at 100% load (%) | 93,6 |
| Power factor at 100% load | 0,84 |
| Starting and torque characteristics | |
| Rated torque (Nm) | 4065 |
| Locked-rotor torque ratio (LRT/RLT) | 1,20 |
| Breakdown torque ratio (BDT/RLT) | 2,0 |
| Locked-rotor current ratio (LRA/RLA) | 5,3 |
| Rotor moment of inertia (kg·m²) | 18 |
| Load moment of inertia (kg·m²) | 1320 |
| 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 | 6322-C3/6322-C3 |
| Lubricant | Lithium-based grease No. 2 (temperature class) |
H27R 3554-8-6 delivers high energy yield where long-term reliability and control of operating costs are decisive. This 750 rpm electric motor with an output of 315 kW and a 6000 V power supply is intended for heavy drives where balanced operation, precise torque reserve and efficient use of installed input power are expected. In practice, this means lower losses during continuous operation and better readiness for long technological cycles.
Efficient cooling increases durability in demanding environments
The H27R-HD-Modular series uses IC611 air-to-air cooling, which helps keep the motor’s internal circuit separated from the surrounding environment. The closed solution with a heat exchanger limits dust ingress and supports use in corrosive operations where open cooling would reach maintenance limits more quickly. For large factories and OEM assemblies, this is a practical benefit when planning service intervals and maintaining output stability under adverse conditions.
- IC611 cooling supports cleanliness of the motor interior.
- Closed cooling circuit helps reduce sensitivity to dust and aggressive environments.
- IE4 Super Premium efficiency contributes to lower losses under high load.
- VPI impregnation of the stator winding increases resistance to moisture, vibration and contaminant deposits.
Stable output under a load of 4065 Nm
For drive design, the combination of rated torque of 4065 Nm, rated current of 38,7 A and a power factor of 0,84 is important. The motor achieves efficiency of 93,6 %, supporting economical operation in high-power applications. Rated speed of 740 rpm corresponds to an 8-pole electric motor, which is suitable for slower but torque-demanding technological units. During starting, it provides starting torque of 1,2 times the rated torque, breakdown torque of 2 times the rated torque and starting current of 5,3 times the rated current, which helps when sizing the power supply, protection and torque reserve.
Package weight of 2730 kg, rotor inertia of 18,0 kg·m² and load inertia of 1320,0 kg·m² provide important inputs for starting design and coordination with gearboxes or couplings. Insulation class F and temperature rise class B provide a safe thermal framework for long-term use in industrial units. 6322-C3 bearings on both the DE and NDE sides complete the design intended for operation with higher requirements for stability and service life.
High-voltage drive for heavy technologies
In the category of high-voltage electric motors, H27R 3554-8-6 is used where high output, long operating hours and reliable operation in an extensive technological unit come together. VYBO Electric designs the H27R-HD-Modular series for high-voltage industrial drives where compatibility with robust switchgear, converters and downstream mechanics is important. The motor is therefore suitable for projects where not only output but also the stability of electrical and thermal parameters throughout the entire service life is decisive.
Typical industrial applications
H27R 3554-8-6 is suitable for raw-material processing mills, large extraction fans, compressor assemblies, high-inertia conveyor systems, mixing and agitation lines, as well as pumping stations in power generation and water management. In each of these cases, stable operation under high load and better control of the thermal regime provide an advantage.
Prepared for integration into large units
For OEM manufacturers and operators of large factories, predictable motor behavior within the assembly is important. H27R-HD-Modular therefore combines efficient cooling, high efficiency and design elements focused on resistance to vibration and adverse environments. If you need a motor for long-term operation with emphasis on energy balance, order H27R 3554-8-6 in time and obtain a solution ready for deployment without unnecessary delay.