The Air 40 wind turbine was designed with sailboats and RVs in mind. The outside appearance and size of the Air 40 is the same as the Air 30. The main difference is that the algorithm of the Air 40 has reduced RPM’s designed to optimize performance in moderate wind speeds. As a result the Air 40 will operate in a much quieter fashion than the Air 30. Another feature of the Air 40 is that the angle of the blades was modified to reduce vibrations. The Air 40 is the recommended wind turbine for land applications with people in the vicinity. The marine version of the Air 40 is the Air Breeze model. Use this link to read more about the Primus Air 30 and Air 40 wind turbines.
All Primus Air models include an red LED light visible at the bottom of the turbine's body. The LED light will be solid when the turbine is producing energy. A slow flashing means the turbine is in regulation mode, which is when the turbine spins slowly but no energy is being produced. A fast flashing means the winds are strong and the turbine has entered overspeed protection.
The Primus wind turbines come with a built-in charge controller with a factory preset voltage to operate in 12, 24 and 48 Volt DC systems. The default voltage set points are optimal for most deep-cycle batteries commonly used in renewable energy systems. However, the factory values can be field adjusted to accommodate the charge set points for special battery technologies.
It is a wide spread notion that the higher the turbine the better the wind speed; this is true to a certain extend. However, it is not as critical when it comes to micro wind turbines like the Primus Air models. In some cases the additional wire, post, materials and installation cost to have a high turbine does not justify the increase performance. A typical height for these turbines is 30-40 feet above ground.
Since these micro-turbines are paired with solar panels in most systems, when analysing the turbine's performance it is more important to evaluate the winter's wind resource rather than focusing in the yearly average wind speed. If you are located in the USA or Canada, Primus Windpower has developed a neat tool where you can see a graph for your turbine's production throughout the year for your specific geographic location.Â
When using the Primus generators in locations with very high wind speeds, the turbine can be connected in conjunction with a Morningstar Tristar charge controller which has and auxiliary input specially designed for dumping the excess energy produced by small wind turbines.
Features of the Air 40 wind turbines:
AIR 40 Wind Turbine Technical Specifications: