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Siemens SWT-3.4-108

Design
Onshore/Offshore Onshore
Wind class IEC IA
Rated power 3,400 kW
Cut-in wind speed 3.00 m/s
Nominal wind speed 14-15 m/s
Cut-out wind speed 25.00 m/s
Maximum 3s gust 70 m/s (IEC version)
Hub Nodular cast iron
Main shaft Nodular cast iron
Nacelle bed plate Nodular cast iron
Rotor
Type 3-bladed, horizontal axis
Position Upwind
Rotational speed 6.5-19 rpm
Number of blades 3
Rotor diameter 108.00 m
Swept area 9,161 m2
Airfoils Siemens proprietary airfoils, FFA-W3-XXX
Blade length 53.00 m
Blade type Self-supporting
Blade material GRE
Blade surface gloss Semi-mat, < 30 / ISO2813
Blade surface color Light grey, RAL 7035
Rotor tilt 6 degrees
Tip chord 0.53 m
Root chord 3.40 m
Air brake Full-span pitching
Aerodynamic brake activation Active, hydraulic
Tower
Type Tubular steel tower
Hub height 74.50 / 94.0 m
Corrosion protection Painted
Surface gloss Semi-gloss, 20-40 / ISO2813
Color Light grey, RAL 7035
Gear system
Electrical
Generator type Synchronous, PMG
Generator - Voltage 690.00 VAC
Nominal frequency 50 Hz/60 Hz
Control & Safety
Mechanical brake system Hydraulic disc brake
Mechanical brake - Position Generator rear end
Mechanical brake - Number of callipers 3
Yaw system Active
Yaw bearing Externally geared
Yaw drive 8 (optional 10) electric gear motors
Yaw brake Passive friction brake
Control Pitch regulation with variable speed
Controller type Siemens Integrated Control System (SICS)
SCADA system WPS
Operation
Dimensions & Weight
Power

Power coefficient

References

[1]

Siemens AG. Technical specifications - Wind Turbine SWT-3.2-108 / 3.4-108. URL: https://www.siemens.com/content/dam/internet/siemens-com/global/market-specific-.... [Date Accessed: 21/01/2018].