||The difference between the Air-X and the Air 403
Air-x: 400 watts @ 28 mph
Air 403: 400 watts @ 28 mph
Air-x: 550 watts
Air 403: 650 watts
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
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.
Air-x: Internal, synchronous rectifier bridge
Air 403: Internal
Air-x: 3 years
Air 403: 3 years
Air-x: 13 lbs. (5.85 kg)
Air 403: 13 lbs. (5.85 kg)
Air-x: 46 in. (1.15m)
Air 403: 46 in. (1.15m)
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 403: $595
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.