750KW

.       Wind Turbine

1)Produced by license from Germany Repower, the product past GL( Germany Lioyd) certification.

2)The wind turbine is mature in technology and reliable in performance, with over 80% localization. The main components are turned out domestically with easy maintenance and short-term delivery.

3)、Cryogenic material and frozen proof  design are suitable for cold northern areas ( extreme low operation temperature is -30°C)

2.       Components

1The tower is specially designed for shock-absorption and noise reduction.

2Optimized Blades with adjustable rotor heights and diameters are suitable for wind farms of various types.

3Use Mita control system for reliable performance and better anti-interference capability.

4Use soft braking technology for braking system; reduce the impact loads of drive train to the utmost extents. The advanced and reliable power fail protection technology makes the wind turbines automatically and smoothly shutdown when accidents occur.

5Oil filled electrical motor and leak proof seal technology in neat-structured hydraulic system  to ensure high efficiently and precisely operation in environment of -40C+ 80°C

6Good damping makes yawing more stable.

3.       After-service

1Free periodic update for control system, free share for tech. innovation;

2Easy and quick maintenance reduce owner’s human resource cost

3Consumables with wide applicability and easy procurement for the convenience of owners.

 

Model

WD49(50) 750kW

 

Rated power

750kW

 

Cut-in wind speed

3.5m /s

 

Rated wind speed

14m /s

 

Cut-out Wind Speed

25m /s

 

Extreme wind speed of survival

60m /s

 

Operating temperature range

-20 - -45 normal temperature
-30℃ - -45℃ low temperature

 

 

 

 

Rotor

 

 

Diameter

49m / 50m

 

Swept area

1886m2 / 1963m2

 

Number of blades

3

 

Blade Material

GRP

Rotor Speed

22.5rpm/21.7rpm

 

 

 

 

Gearbox

 

 

Type

3 stage gearbox with planetary gear

Rransmission  ratio

67.4/70.04

 

 

 

 

Generator

 

 

Type

Single Winding induction Generator 

Rated power

750kW

 

Rated Voltage

690V

 

Grid Frequency

50(+1.5/-2.5)Hz

 

Rated  Speed

1,520rpm

 

 

 

 

Brake

 

 

Aerodynamic brake

blade tip brakes

Mechanical brake

HSS mechanical disk brake

Safety protection

fail safe

 

 

 

Yawing system

 

 

Type

Motor drive

Control

Active Yawing

Yaw brake

Hydraulic calliper brake

 

 

 

Tower

 

 

Type

Conical tubular steel tower

Hub height

50m 65m

 

 

 

 

Control system

 

 

Main controller

MITA

 

Soft cut-in system

Thyristor

Monitor

Modem/Internet

 

 

 

Lightning System

Blade tip lightning receptors

Reliable surge-protect device

Over-voltage protection for electric components