AW 250kW Wind Turbine - 30m rotor
250 Kilowatts of Power - Filling the Mid-Scale Gap
For too long the wind industry has been looking for a turbine that produces much more than 100 kilowatts of power, without having to go to the size or expense of a 600 or 750 kilowatt machine. With the public now aware that wind power can be a viable source of electrical energy, customers want to know what it can do for their local factory, shopping center or school. The Aeronautica 225 series fills that need.
The origin of this superb turbine goes back more than 25 years, with the first machines of this class installed in 1984. Over 87 turbines were installed across the world.
At less than 180' tall on a 40m monopole tower (30m and 50m options also available), the 250 is a great stall-regulated wind turbine that will fit on many suburban, urban, and micro grid opportunities. It is able to be shipped in standard shipping containers, making delivery to most locations a breeze. Erection can be made by readily available smaller cranes that can be mobilized easily. Its simplicity of design has created both a robust and very cost effective turbine for commercial, industrial or municipal needs.
With its low profile and efficient output, the 250 is a great match for many distributed generation applications. And Aeronautica wind turbines are all manufactured in the United States, reducing shipping costs and delivery times.
AW 250 Power Curve
AW 250 Annual Power Output
AW 30-250 Specifications
Blades
3 blades, upwind orientation
Fiberglass reinforced polyester
Rotor
Power regulation: Stall Regulated
Rotor size: 30m diameter (108')
Rotor speed: 40/24 rpm
nominal Swept area: 707m2
Tilt angle: 5o
Coning angle: 0o
Blades length: 13.4m
Tip speed: 54.4 m/s (141 mph) at full load
Pitch angle: Approx. 2.3o (adjusted during run-in)
Pitch bearings: 4-point ball bearings
Air brake, normal: Turnable Blade Tips
Air brake, emergency: Fail safe disc brake on high speed shaft
Mechanical brake: A fail-safe type disk brake
Brake torque: 2 times of nominal torque (1x by normal braking sequence)
Generator
Nominal Electric Power: 250/50kW
Generator: Closed, 4/6 or 6/8pole, asynchronous, single wound, induction, IP54
Generator speed: 1006/757 rpm (50 Hz) / 1207/908 rpm (60 Hz)
Loss in generator: Approx. 3% at full load
Generator cut-in: Thyristor controlled gradual cut-in
Grid connection: 400/480V
Frequency: 50 Hz/60 Hz
Connection Relay: SEL 547 Protective Relay (standard)
Operational
Yaw motors: 2 pcs. active drives, electrical
Yaw brakes: 3 pcs. active hydraulic brakes
Yaw bearing: Slide bearing
Cut-in wind speed: 3-4 m/s (7-9 mph), based on 10 min average
Cut-out wind speed: 25 m/s (56 mph), based on 5 min average
Survival Speed: 52.5 m/s (117 mph)
Controller: Mita-Teknik
Op. Temp. Range: -30oC to +55oC (Very Low Tempe and Very High Temp options available)
Noise: 98 dBA Sound Power (at Nacelle)
Monopole Tower
Conical Steel, White: 30, 40, and 50m hub heights
Nacelle Access: Interior tower ladder through locked door
Surface Treatment: In accordance with ISO 12944
Laser inspected flanges, ultrasonic inspection of raw materials/welds
Safety Features
Induction generator has inherent anti-islanding
Fail-safe hydraulic disk brake
Grid monitoring for shutdown and operational performance
Fall protection ladder system
Lightning protection