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Norwin - Model 54-ASR-750 kW -Wind Turbine
FromNorwin A/S
Nominal electric power: 200/750 kW. Power regulation: Active Stall Regulation (ASR) . IEC wind class: HB. Rotor diameter: 54 m. Rotor speed: 25.2 rpm at full load. Rotor: Three blades placed upwind of tower. Swept area: 2290 m2. Tilt angle: 4°.
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- Coning angle: 3.0° forward blade pre-bending
- Blades length: 26.0 m
- Tip speed: 71 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: 20 m/s, basen on 5-min. average
- Mass of blade:App. 6900 kg (total 3 pieces)
- Mass of hub: App. 4100 kg
- Mass of nacelle: App. 23500 kg
- Mass total, excl. tower : App. 34500 kg
- Maximum noise level:App. 104 dBA