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Norwin - Model 47-ASR-750 kW -Wind Turbine
FromNorwin A/S
Nominal electric power: 180/750 kW. Power regulation: Active Stall Regulation (ASR). Rotor size: Diameter 47 m.
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- Rotor speed: 25.5 rpm at full load
- Rotor: Three blades placed upwind of tower
- Swept area: 1735 m²
- Tilt angle: 4°
- Coning angle: 3.0 forward
- Blades make: LM 21.0 P
- Tip speed: 63 m/s at full load
- Pitch angle: ASR
- Pitch bearings: 4-point ball bearings
- Air brake, normal: Pitch to -20°, actuated by the ASR regulation system
- Air brake, emergency: Pitch to -85° fail safe, activated by accumulators in hub
- Nominal pitch speed: 7.5°/sec.
- Mechanical brake: A 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, 4-pole, asynchronous, single wou-nd, induction, IP54
- Generator speed: 1000/1500 (50 Hz) or 1200/1800 (60 Hz) rpm at sync. speed
- Loss in generator: 3%
- Generator cut-in: Thyristor controlled gradual cut-in
- Grid connection: 50 Hz - 690 V or 60 Hz - 6000 V
- Yaw motors: 4 pcs. With electrical brakes built in
- Yaw brakes: 4 pcs. Hydraulic brakes of disk brake type
- Yaw bearing: 4-point ball bearing
- Tower type: Conical steel tower (35-65 m hub hight)
- Controller: PLC and microprocessor based
- Cut-in wind speed: 3-4 m/s, based on 10-min. average
- Cut-out wind speed: 25 m/s, basen on 10-min. average
- Mass of blade: (3) 6600 kg
- Mass of hub: 8000 kg
- Mass of nacelle: 24000 kg
- Mass total, excl. tower: 38600 kg
- Maximum noise level: 100 dBA