Three-phase electric motor: H27R-4503-6 900KW 6000V 50HZ
| Basic technical data | |
| Motor type | H27R 4503-6 |
| Rated power (kW) | 900 |
| Frame size (mm) | 450 |
| Number of poles | 6 |
| Rated speed (rpm) | 992 |
| Frequency (Hz) | 50 |
| Electrical parameters | |
| Rated voltage (V) | 6000 |
| Connection | Y |
| Rated current (A) | 104,9 |
| Efficiency at 100% load (%) | 95,3 |
| Power factor at 100% load | 0,87 |
| Starting and torque characteristics | |
| Rated torque (Nm) | 8664 |
| Locked-rotor torque ratio (LRT/RLT) | 1,00 |
| Breakdown torque ratio (BDT/RLT) | 2,0 |
| Locked-rotor current ratio (LRA/RLA) | 5,6 |
| Rotor moment of inertia (kg·m²) | 44 |
| Load moment of inertia (kg·m²) | 1250 |
| 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 | 4690 kg |
| Colour | RAL7030 |
| Paint finish | shiny |
| Bearings and lubrication | |
| DE/NDE bearings | NU228-C3+6030-C3/NU228-C3 |
| Lubricant | Lithium-based grease No. 2 (temperature class) |
Energy efficiency is decisive for high-power drives, which is why H27R 4503-6-6 provides highly economical operation even under continuous load. This 1000 rpm electric motor with an output of 900 kW belongs to the category of machines for 6000 V and is intended for applications where stable torque, long-term reliability and precise interaction with downstream technology are expected.
The H27R-HD-Modular series design uses a closed cooling circuit with a heat exchanger and IC611 air-to-air cooling, which keeps the inside of the motor separated from the surroundings. Such a solution helps reduce the effects of dust, moisture and corrosive particles during operation in metallurgy, chemical plants and power generation. Combined with IE4 Super Premium efficiency, it creates a drive that limits energy losses and supports economical continuous operation.
VYBO Electric also uses VPI impregnation of the stator winding in this series, increasing resistance to vibration and improving long-term insulation stability. A high-voltage electric motor with this equipment is suitable for operations requiring robust electrical and mechanical reserve. Rated current reaches 104,9 A, efficiency 95,3 % and power factor 0,87, which are important values when designing power supply, protection and distribution panels.
Precise parameters facilitate high-power drive design
Mechanical dynamics are also important for this type of motor. Rated torque reaches 8664 Nm, starting torque 1 times the rated torque and breakdown torque 2 times the rated torque. Starting current reaches 5,6 times the rated current, so appropriate coordination of protection, starting components and the power network should be considered. Rotor inertia of 44,0 kg·m² and load inertia of 1250,0 kg·m² help when designing the starting of technological assemblies with greater mass reserve.
- H27R 4503-6-6 is suitable for high-flow pumps in petrochemical production.
- H27R 4503-6-6 is suitable for compressor stations in gas systems.
- H27R 4503-6-6 supports operation of mills in cement plants even under long-term load.
- H27R 4503-6-6 is used in crushers for the mining and processing industries.
- H27R 4503-6-6 is suitable for extrusion lines in metallurgical production.
- H27R 4503-6-6 supports mixing stations in chemical plants.
- H27R 4503-6-6 is used in belt conveyors with high resistance to load.
- H27R 4503-6-6 is suitable for cooling-tower fans in power generation.
- H27R 4503-6-6 performs well in service-water pumping stations.
- H27R 4503-6-6 is suitable for winding and unwinding equipment in the paper industry.
- H27R 4503-6-6 supports drives in raw-material and mineral-processing technology.
- H27R 4503-6-6 is suitable for large operating units in modern OEM assemblies.
Bearings and insulation support a long service interval
The DE bearing arrangement NU228-C3+6030-C3 and NDE bearing NU228-C3 form the basis for stable operation under high load and precise alignment of the drive with the driven machine. Insulation class F combined with temperature rise class B provides reserve for demanding industrial use and long-term operation in modes where operational availability is monitored.
Suitable basis for HV technologies with high operational reliability
The H27R-HD-Modular series is intended for high-voltage industrial drives where precise power transmission and long service life are expected. The H27R 4503-6-6 model with a package weight of 4690 kg provides a robust base for integration into technological units where reliability during continuous operation, service simplicity and efficient cooling of the closed system are decisive.
For projects requiring high output, a stable thermal balance and a design prepared for long-term deployment, H27R 4503-6-6 is a practical choice for new installations and replacement of existing drives alike. Order the VYBO Electric solution today so that you have sufficient reserve for the planned installation and can continue with the production schedule without unnecessary delay.
