Three-phase electric motor: H27R-3551-2 355KW 6000V 50HZ
| Basic technical data | |
| Motor type | H27R 3551-2 |
| Rated power (kW) | 355 |
| Frame size (mm) | 355 |
| Number of poles | 2 |
| Rated speed (rpm) | 2981 |
| Frequency (Hz) | 50 |
| Electrical parameters | |
| Rated voltage (V) | 6000 |
| Connection | Y |
| Rated current (A) | 41,9 |
| Efficiency at 100% load (%) | 95,3 |
| Power factor at 100% load | 0,86 |
| Starting and torque characteristics | |
| Rated torque (Nm) | 1137 |
| Locked-rotor torque ratio (LRT/RLT) | 1,00 |
| Breakdown torque ratio (BDT/RLT) | 3,2 |
| Locked-rotor current ratio (LRA/RLA) | 7,3 |
| Rotor moment of inertia (kg·m²) | 3,6 |
| Load moment of inertia (kg·m²) | 53 |
| 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 | 2250 kg |
| Colour | RAL7030 |
| Paint finish | shiny |
| Bearings and lubrication | |
| DE/NDE bearings | 6317-C3/6317-C3 |
| Lubricant | Lithium-based grease No. 2 (temperature class) |
H27R 3551-2-6 is designed to reduce energy losses in large drives while maintaining stable output in continuous operation. This high-output machine with a power of 355 kW, a supply voltage of 6000 V and a rated speed of 2981 rpm belongs to a class where high efficiency, precise torque reserve and long-term reliability are expected from the motor. In practice, energy efficiency also helps operations with a high number of operating hours.
Cooling that protects the motor even in dusty operation
The closed cooling circuit with an IC611 heat exchanger keeps the air inside the motor clean, so the design handles dusty, humid and corrosive conditions more effectively. In combination with IE4 Super Premium efficiency, it helps reduce operating costs without compromising load capability. This 2-pole electric motor is therefore suitable wherever long service life, stable operation and control of thermal losses are decisive.
- Output of 355 kW supports heavy-duty pumps, fans and technological units.
- Rated current of 41,9 A simplifies the design of the power supply and protection in the switchboard.
- Rated torque of 1137 Nm provides sufficient reserve for starting and load changes.
- Starting torque reaches 1 times the rated torque, breakdown torque 3,2 times the rated torque and starting current 7,3 times the rated current, which is important when designing starting and protection.
- Rotor inertia of 3,6 kg·m² and load inertia of 53,0 kg·m² help when assessing the dynamics of the complete assembly.
- 6317-C3 bearings on both the DE and NDE sides increase suitability for long-term loading.
VPI impregnation increases winding durability
VPI impregnation of the stator winding increases resistance to moisture, dust and vibration, which is important for drives with higher loads and frequent starts. Insulation class F together with temperature rise B supports a safe thermal reserve in demanding operating modes. A package weight of 2250 kg must be taken into account during handling, transport and installation into the technological assembly.
Suitable for large technological systems and OEM assemblies
The H27R 3551-2-6 model is suitable for cement production lines, metallurgical units, compressor stations, raw-water pumping systems, cooling towers, crushers, mixing systems, conveyor lines and auxiliary drives in the energy sector. Its design supports long-term deployment wherever high reliability, precisely dimensioned starting and controlled operation at 355 kW are expected. For the design of large assemblies, it is a solution that simplifies integration into both standardised and custom applications.
Order a solution for demanding operation
If you need an electric motor for an industrial project with an emphasis on power, efficiency and durability, order the H27R 3551-2-6 today. Availability of large industrial motors can change quickly, so it is sensible to secure a reservation in good time through VYBO Electric.