Geoho 850kW VSCF wind turbine

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 turbineManufacturer 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 BladeManufacture/Type APX56 Blade materials Glass fiber reinforced resin Blade number 3 Speed range rpm 14.5 29 Rotation sense Clockwise GeneratorType 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 systemMain brake system Airbrake The second brake system Hydraulic brake Yaw systemType/Design Motor drive/4 planet deceleration Control PLC Yawing bearing Internal 4 stages planetary gearbox Lubricating system Self-lubrication Lightning protectionlightning protection standard According to IEC, comply with certification Lightning protection measures Electrical lighting protection, tip lighting protection Wind turbine earthing resistance Ω ≤4 TowerType Steel tubular tower Hub height m 70/65 Surface erosion protection Painting WeightNacellewithout turbine t 28 Generator t 3.6 Turbinewith blade and hub t 17.4