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Subject The difference between the Air-X and the Air 403
Author Ben Farmer
 
 
Rated Output Air-x: 400 watts @ 28 mph Air 403: 400 watts @ 28 mph Peak Power Air-x: 550 watts Air 403: 650 watts Power Controller Air-x: Microprocessor-based RPM control with peak power tracking for minimizing blade noise, and optimizing blade-to-alternator efficiency. Lower tip speed. Air 403: Passive charging Voltage Regulator Air-x: Reads at battery for increased efficiency, better braking, and zero trickle charge. Air 403: Reads combined voltage of wire and battery. Trickle charge in high winds. Over Speed Control Air-x: Electronic torque control limits RPM, results in quieter operation. Air 403: Passive pitch control: aerodynamic blade flutter limits RPM. Rectification Air-x: Internal, synchronous rectifier bridge Air 403: Internal Warranty Air-x: 3 years Air 403: 3 years Weight Air-x: 13 lbs. (5.85 kg) Air 403: 13 lbs. (5.85 kg) Rotor Diameter Air-x: 46 in. (1.15m) Air 403: 46 in. (1.15m) Voltage Air-x: 12 & 24 Vdc (48V Jul '02) Air 403: 12, 24, 36, 48 Vdc Battery Bank: Minimum Air-x: 25Ah: The circuit cuts off all current at full charge. Air 403: 400Ah: trickle charge Start up speed Air-x: 7 mph (3.13 m/s) Air 403: 8 mph (3.58 m/s) Survival Wind Speed Air-x: 110 mph (49.2 m/s) Air 403: 110 mph (49.2 m/s) List Price ($US) Air-x: $649 Air 403: $595 Air-X Improvements 1. Much lower noise: Electronic braking instead of blade flutter allows for much quieter and neighbor-friendly operation. 2. Improved battery charging: Measures voltage at the battery for a true voltage reading resulting in more efficient charging. All current is shut off at the full charge. No trickle charging. 3. Lower stress design: Power is controlled through torque control and is not dissipated by the electronics resulting in lower stress on the electronics, bearings and other materials. High wind electronic stall protection slows blades to 600 rpm, significantly reducing turbine and tower loading.
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