Unit SL4.X/172

Operating data

Rated power (kW)

4550

Cut-in wind speed (m/s)

3

Cut-out wind speed (m/s)

20

Rated wind speed (m/s)

9.8

Type of wind zone

IEC S

Operating temperature (℃)

-30 ~ +40

Survival temperature (℃)

-40 ~ +50

Design life (years)

20

Impeller

Impeller diameter (m)

172

Swept area (m²)

23223

Number of blades

3

Blade material

GRP

Pitch system

Type

Electric pitch

Pitch bearing

Double row four-point angular contact ball bearings

Gearbox

Gearbox type

Two-stage planet, one-stage parallel axis

Gearbox lubrication method

Forced + splash lubrication

Gearbox oil filtration

Online filtration (optional offline fine filtration)

Generator

Type

Doubly-fed asynchronous generator

Rated voltage (V)

1140

Braking system

Pneumatic braking system

Pitch system

Mechanical braking system

Hydraulic mechanical brake

Yaw system

Type

Active Yaw

Yaw drive

Electric yaw

Yaw bearing

Yaw bearing + hydraulic brake

Frequency converter

Rated voltage (V)

1140

Network side frequency (Hz)

50

Transmission chain

Main bearing

Spherical roller bearing

Control System

Control unit

PLC

Process control system

Distributed control

Bus Control Type

Powerlink

Remote Control

SCADA

Tower

Type

Steel cone tower/concrete tower

Hub center height (m)

100-160 (customized by project)

Cylinder

Structural steel; precast concrete