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Norwin - Model 47-ASR-500 kW -Wind Turbine
FromNorwin A/S
Nominal electric power : 200/500 kW. Power regulation : Active Stall Regulation (ASR). IEC wind class : IB and IIA. Rotor diameter : 47 m. Rotor speed : 25.2 rpm at full load.
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- Rotor : Three blades placed upwind of tower
- Swept area : 1735 m²
- Tilt angle : 4°
- Coning angle : 3.0° forward
- Blades length : 21.0 m
- Tip speed : 63 m/s at full load
- Pitch angle : ASR control
- Pitch bearings : Slew rings (4-point ball bearings)
- Air brake, normal : Blade pitch to -20°
- Air brake, emergency : Blade pitch to -85° fail safe position
- Nominal pitch speed : 7.5°/second
- Mechanical brake : Fail-safe type disk brake
- Brake torque : 1.8 times of nominal torque
- RPM max. value : 1600 (50 Hz) or 1920 (60 Hz), observed on the high-speed shaft
- Generator : Closed, 6/4-pole, asynchronous, induction, IP54
- Generator speed : 1000/1500 (50 Hz) or 1200/1800 (60 Hz) rpm at sync. speed
- Loss in generator : 3% at nominal power
- Generator cut-in : Thyristor controlled gradual cut-in
- Grid connection : 50 Hz - 690 V or 60 Hz - 690 V
- Yaw motors : 4 pcs. with electrical brakes built in
- Yaw brakes : 4 pcs. hydraulic brakes of disk brake type
- Yaw bearing : Slew ring (4-point ball bearing)
- Tower type : Conical steel tower (40-65 m hub hight)
- Controller : PLC and microprocessor based
- Cut-in wind speed : 3-4 m/s
- Cut-out wind speed : 25 m/s, basen on 5-min. average
- Mass of blade : App. 6600 kg (total 3 pieces)
- Mass of hub : App. 8000 kg
- Mass of nacelle : App. 24000 kg
- Mass total, excl. tower : App. 38600 kg
- Maximum noise level : 100 dBA