A. Specifications of Wind Turbine: 

Type

DF52-800

Class

IEC IIA

Power adjustable type

Stall-regulated

Rated power

800kw

Grid connection

Soft grid connection

Vt/Cut-in wind speed

14m/s

Vin/Cut in wind speed

4m/s

Vout/Cut out wind speed

25m/s

Ve50/Hub Height50-year extreme wind speed

59.5m/s

D/Rotor Diameter

52m

Rated Rotational speed

21.68rpm

Hub height

50m

Designed service lifetime

20 years

Noises

≤100dB(A)

B. Environmental conditions:

Normal temperature ranges

-20°C-40°C

Survival temperature ranges

-20°C-50°C

Relative humidity of the air

≤95%

Air density

1.225kg/m³

Solar radiation

<1000W/m2

C. Electrical network condition:

Normal supply voltage range

690V±10%

Normal supply frequency and range

50Hz±2%

Voltage imbalance

The ratio of the negative-sequence component of voltage to the positive-sequence component shall not exceed 2%

Number of electrical network outages

20 times/year

Maximum duration of electrical power network outage

7 days

D. Rotor:

Blade type and manufacturer

ZN25.0 China Energy Windpower Equipments Co.,Ltd.

Length of blade

25m

Material of Blade

Glass fiber reinforced resin

Number of Blades

3

Direction

Horizontal axis

Inclination angle

5°

Cone angle

2.5°

Wind Direction

Upwind

Sense of rotation(looking from upwind)

Clock-wise

E. Hub:

Manufacturer

Shanxi Diesel Engine Heavy Industry Co.,Ltd.

Structure shape

Spherical

Material

QT400-18AL

Weight

4500kg

F. Generator:

Manufacturer

Yongji Xinshisu Electric Equipment Co.,Ltd.

Type

YJ50C2

Rated power

800kw

Rated voltage

690V

Rated Frequence

50Hz

Rated rotational speed

1520 rpm

Insulation level

H

Protection Level

IP54

Cooling model

Fan-cooling