Three-phase electric motor: H27R-3551-8 220KW 6000V 50HZ
| Basic technical data | |
| Motor type | H27R 3551-8 |
| Rated power (kW) | 220 |
| 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) | 27,2 |
| Efficiency at 100% load (%) | 93,1 |
| Power factor at 100% load | 0,84 |
| Starting and torque characteristics | |
| Rated torque (Nm) | 2839 |
| Locked-rotor torque ratio (LRT/RLT) | 1,20 |
| Breakdown torque ratio (BDT/RLT) | 2,0 |
| Locked-rotor current ratio (LRA/RLA) | 5,2 |
| Rotor moment of inertia (kg·m²) | 13 |
| Load moment of inertia (kg·m²) | 886 |
| 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 | 2510 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 3551-8-6 is a solution for operations requiring high output with low losses and stable operation in continuous duty. This 750 rpm electric motor with an output of 220 kW is intended for a 6000 V power supply and provides a balanced ratio between operating efficiency, torque reserve and reliability under long-term load. In the category of HV electric motors, it is a solution that performs well where energy discipline and construction prepared for tough industrial use are decisive.
Energy efficiency reduces costs under long-term load
The motor reaches efficiency of 93,1 % and a power factor of 0,84, helping limit unnecessary energy losses in power drives. IE4 Super Premium efficiency is particularly important in this segment for applications where the motor operates for long hours without interruption and every reduction in losses translates into total operating costs. With a rated current of 27,2 A and a rated speed of 740 rpm, the drive can be sensibly matched to the line’s operating requirements, while H27R-HD-Modular remains suitable for modern technologies emphasizing stability and service availability.
IC611 air-to-air cooling keeps the motor suitable for demanding environments
The main design benefit is IC611 air-to-air cooling, which operates in a closed cooling circuit and helps keep the air inside the motor clean. This solution improves suitability where dust, moisture or corrosive components are present in the air because the internal cooling space is not directly exposed to the surrounding atmosphere. High output remains controlled even under prolonged load, which is essential for a high-voltage electric motor in industrial use.
VPI impregnation of the stator winding strengthens resistance to vibration
The stator winding is impregnated using VPI technology, supporting resistance to moisture, dust and vibration. For large drives, this protection is especially important in environments with frequent starting, load changes and long operating cycles. Insulation class F together with temperature rise class B provides practical reserve for thermal stability, increasing reliability in high-load applications. H27R-HD-Modular therefore provides a design foundation suitable for industrial units requiring long service life and consistent parameters.
Torque reserve helps during starting and loading
Rated torque of 2839 Nm is complemented by starting torque reaching 1,2 times the rated torque and breakdown torque at 2 times the rated torque. Starting current of 5,2 times the rated current is an important value when designing the power supply, protection components and line protection because it allows more precise configuration of the drive’s electrical infrastructure. This eight-pole electric motor also has rotor inertia of 13,0 kg·m² and load inertia of 886,0 kg·m², which is relevant when designing its connection to the driven mechanism.
Design data facilitate integration into heavy technologies
A frame size of 355 mm and package weight of 2510 kg indicate a robust drive for large technological units. DE bearing 6322-C3 and NDE bearing 6322-C3 support reliable operation under radial and combined loads, which is important in applications with continuous mechanical loading. Motors in the H27R-HD-Modular series are therefore suitable where precise sizing, spatial integration and long-term operational reliability without unnecessary interventions are required.
Typical industrial use delivers stable output in practice
The H27R 3551-8-6 model is intended for solutions combining high output, low losses and resistance to demanding conditions. It is typically used in the following operations:
- Main pumping units for process water and circulation circuits.
- Ventilation systems for metallurgical, power-generation and chemical operations.
- Compressor stations requiring continuous high output.
- Mills and crushing lines with impact and steady loads.
- Rolling and conveying technologies in large manufacturing plants.
- OEM units for power generation, processing industries and heavy engineering.
If you need a drive for long-term use that combines economical operation, robust construction and readiness for industrial conditions, H27R 3551-8-6 is a suitable candidate. For project use, stock replenishment or rapid replacement in existing technology, order this motor today to secure availability for the nearest installation date.