Geoho 850kW VSCF wind turbine

horizontal axis, 3 blades, upwind;
Variable Speed Constant Frequency;
certified according to IEC;
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