Detailed Product Description
Geoho 850kW wind turbine(GHFD56-850/) is developed in the same technology platformVariable Speed Constant Frequency as prevalent megawatt wind turbine. It is in the form of horizontal axis, 3 blades and up wind. The drive system consists of rotor turbine, horizontal axis, gear box and synchronous generator. The wind turbine system adopts Variable Speed Constant Frequency (electrical independently pitch) control system, and it has a high performance in the aspect of low voltage fault ride through. Power converter adopts full inverter technology, the synchronous generator is brushless and maintenance free. This wind turbine is efficient, credible and with high performances. More than 130 this kind of wind turbines have been installed and operated well for many years.
Description | Unit | Specification |
Wind turbine | ||
Manufacturer | Geoho Energy Technology Co.,Ltd | |
Type | GHFD56-850/II | |
Rated power | kW | 850 |
Blade diameter | m | 56 |
Cut in speed | m/s | 3 |
Rated wind speed | m/s | 11.3 |
Cut out speed10 min average value | m/s | 20 |
Life span | year | 20 |
Operating temperature scope |
| -30° C --+40° C |
Blade | ||
Manufacture/Type | APX56 | |
Blade materials | Glass fiber reinforced resin | |
Blade number | 3 | |
Speed range | rpm | 14.5~29 |
Rotation sense | Clockwise | |
Generator | ||
Type | Brushless synchronous generator | |
Rated power | kW | 930 |
Rated voltage | V | 690 |
Rated current | A | 355 |
Rated speed | rpm | 1710 |
Insulation grade | F | |
Protection grade | IP54 | |
Brake system | ||
Main brake system | Airbrake | |
The second brake system | Hydraulic brake | |
Yaw system | ||
Type/Design | Motor drive/4 planet deceleration | |
Control | PLC | |
Yawing bearing | Internal 4 stages planetary gearbox | |
Lubricating system | Self-lubrication | |
Lightning protection | ||
lightning protection standard | According to IEC, comply with certification | |
Lightning protection measures | Electrical lighting protection, tip lighting protection | |
Wind turbine earthing resistance | Ω | ≤4 |
Tower | ||
Type | Steel tubular tower | |
Hub height | m | 70/65 |
Surface erosion protection | Painting | |
Weight | ||
Nacellewithout turbine | t | 28 |
Generator | t | 3.6 |
Turbinewith blade and hub | t | 17.4 |
