Under the wind speed of 0m/s ~ 3m/s, the turbine blade remain static, and the angle X1 formed between the blade and turbine plane is B° (X1= B° ); Under this angle, the blade is most easily to be started up. As long as the wind speed reached 3m/s, the blades will begin to rotate, during the rotation, the outermost edge of the blade will be driven by the centrifugal force generated by the rotation of the blade to tilt toward the turbine plane, the aforementioned angle X1 will decrease until 0° When the blade is in parallel with the turbine plane; At this angle, the turbine has nearly reached it's rated output power. When the wind speed is between 11m/s ~25m/s, the blade will keep adjusting it's position forth and backward slightly to let the angle X1 fluctuate a little bit but maintain at around 0° Roughly, so as to stabilize it's rated power. Within the wind speed of 25m/s ~ 50m/s, when the wind has exceeded it's rated speed, the wind will keep drawing the blade by the centrifugal force, so the angle X1 will continue to decrease and turn into a negative angle X1= - B° (PS: B° And - B° Is not the same), under this negative angle, the rotation of blade will produce a resistance on the rotation of turbine blade to slow down the rotation and protect the wind turbine from over speed operation, the maximum RPM of the turbine will be no more than 277 RPM.
Wuhan Hubei Trade Co. Ltd., China is an enterprise of new energy, engaged in designing, manufacturing, sales, technology service and financial assistance, especially covering small and medium-size wind turbine system together with relevant towers, as well as concret pumps and other machinery etc. The company is located in the hub of nine provinces _Wuhan, with the advanced information, transport and logistics well developed.
Since established in 2004, the company has constantly striven to technical innovation and the reliability of the products, to supply the best quality products and technical support to the customer's satisfaction. At present, the wind turbines range from 300W, 400W, 500W, 600W, 1kw, 2kw, 3kw, 5kw, 10kw, 20kw, 30kw to 50kw. All models are produced to quantify, so that the clients' purchasing demands can be satisfied.
QUALITY: Your inquired products can meet the requirements of the regulations and/or standard at your target market or meet the administrative approval requirements of the department of your country or international society and organization. Special orders are also highly appreciated.
GUARANTEE: Your down or advance payments, in case necesssary, will be secured by a Bank Guarantee issued from either a bank of China or a western bank, whichever you prefer to choose. The strong financial assistance to you from HUBEI TRADE is also an abundant resource to ensure your projects successful. Therefore, no matter in the terms of payment(s), or in the way of sub-service, you will enjoy the first class service and the most favourable conditions.
WAYS: The way of co-operation is flexible. Any import and export businesses are welcome for discussion. The business scope covers not only the import and export business, but also products agency, distribution, investment etc. Your inquiry and order with or without special requirements or specifications would be highly appreciated by all means.
PRICE: It is quite assured that your co-operation with HUBEI TRADE will enjoy the most favourable price in the Chinese Market owning to our shareholders at the factories, the fiancial advantages from the domestic market, the favourable policy from the local government.
