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TECHNICAL DATAS ET550 / 41
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1. Operating Conditions
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Nominal power
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550 kW
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Cut-in wind speed
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3,0 m/s
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Wind speed at nominal power
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14,5 m/s
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Cut-out wind speed
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20 m/s
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Survival wind speed
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55,3 m/s
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Rotational speed
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18 rpm = 1004 U/min, 28 rpm = 1507 U/min
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Hub height
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42 m or 54 m
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Power limiting
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Aerodynamic stall
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Limiting of rotational speed
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2 disc brakes, centrifugal force controlled tip brake
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2. Machine parts
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Control System
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Manufacturer
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Dan Control (Vestas)
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Rotor
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Manufacturer
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Aerpac APX 40/500 bzw. LM 19.1
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Diameter
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41,5 m
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Rotor area
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1353 qm
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Rotorblade length
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19,25 m
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Tower
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Type
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Steel tube
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Diameter
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2.0 - 3.0 m or 2.0 - 3.2 m ; conical
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Height
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40 m or 52 m
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Mass
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28.000 kg or 44.000 kg
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Base diameter
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3.0 m or 3.2 m
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Material
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Steel, saltwater-proof painted
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Gearbox
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Manufacturer
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Dorstener or Köllmann
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Type
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3 - stage Planetary- / spur gear
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Operation factor
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1,7 (rule GL)
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Ratio
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1 : 54,5
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Maximal output
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720 kW
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Input speed
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18 U/min / 28 U/min
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Output speed
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1004 U/min / 1507 U/min
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Lubrication
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Splash lubrication with external cooler
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Efficiency
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max. 96,5 %
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Mass
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9.000 kg
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Brakes
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Manufacturer
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Svendborg / Sime
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Generator
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Manufacturer
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Elin
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Type
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4 / 6 pole induction generator, watercooled
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Maximum continuous ration
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180 kW / 720 kW
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Nominal power
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150 kW / 600 kW
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Rotational speed
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1004 U/min / 1506 U/min
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Efficiency
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max. 97,5 %
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Frequency
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50 Hz
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Voltage
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3 * 690 V
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Weight
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ca. 2.800 kg
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Wind-directional yaw system
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Manufacturer
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Bon Figlioli, Eugen Schmidt
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Electrical rotational drive
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2
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Rotational speed (Yaw rate)
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0,4 °/sec
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Power consumption (Power input)
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2 x 0,75 kW
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Rotational gear ratio (Yaw gear ratio)
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2700 : 1
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Retaining/braking mechanism
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2 brake blocks, brakes in electrical rotational drive (holding divice)
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Azimut bearing
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Manufacturer
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Hoesch Rothe Erde
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