Distinguish between the quality and quantity of photovoltaic power station what method is there?

Today, with an increasing number of photovoltaic power station, power plant that the quality of a matter of concern to many owners. As a ordinary people, we usually don't have any special test tools, only from the naked eye, also is to rely on the appearance to judge, this can also

today, with the increase of number of photovoltaic power station, power quality has become a problem concerned by many of the owners. As a ordinary people, we usually don't have any special testing tools, can only be judged by the naked eye, that is, to judge according to appearance, it also can have certain recognition effect. From figure 1, cell array welding unnatural in the front of the pv modules, batteries array orderly arrangement is by the battery one by one. First of all, the article by welding the battery connection string, and then through the total lines connect the battery into the array. High quality photovoltaic array should be: cell uniform spacing, battery order, welding tape without welding, welding deviation, etc. , there is no oxidation phenomena (adhesive tape on the surface of wuxi accumulation, The tape will be yellow after oxidation) 2. Photovoltaic components surface eyewinker for photovoltaic power plant components, if there is a foreign body, the performance will be greatly reduced. At the same time, the parts may not have bubbles in the seal coating or lamination. If there is no clear cell layer or bubble, the service life of the pv modules will be shortened. 3. There is crack framework is not neat or interface. For famous brand manufacturers of photovoltaic components, its frame should be smooth, clean and tidy, no foreign body like components. If parts with corrosion of aluminum frame and interface is not tight, is an obvious gap, even feel very sharp, jagged, so we should start on guard. On the one hand, these poor handle is packing effect can affect the service life of parts. Another more important reason is that some components, refurbished components and degradation of fake brand components often ignore the processing of aluminum frame. Worry refurbished parts friends can, therefore, pay attention to the processing framework, and see if there is something wrong. 4. Components have glue pits or bumps on the back. 5. Junction box for famous brand manufacturers of photovoltaic modules in the junction box, the box body and the lid is mostly adopt the whole repression and seal. Junction box structure has good sealing performance and sealing strength, junction box logo is clear, adhesion strong, reliable fastening. However, the small workshop manufacturing cannot achieve the above points of junction box. These are either fake or low quality, can be directly refuse to accept the goods. Stents to identify first, intuitively, high quality steel bracket of trademark and traditional printing is relatively standard. If we usually see mark blurred, may be inferior steel support. High-quality steel stents composition is uniform, cold cut high tonnage, cutting head end surface smooth level off, the cutting head end is often uneven by inferior material quality is poor, no metallic luster. Identification of inverter and distribution box 1, appearance and main parts without damage, be affected with damp be affected with damp, rust. 2. The internal wiring is neat, internal whether all parts are new. 3. View product craft, the attachment is complete, if there were any specifications and certificates. It should be pointed out that professionals are still difficult to determine the quality of the photovoltaic power generation systems, not to mention the lack of professional knowledge of ordinary users. These methods can only be used to eliminate inferior pv systems. If you want to safely enjoy 25 years of income, photovoltaic power station system of quality assurance is the key. If you want to install photovoltaic power station, you should directly to choose a famous brand, and purchase a complete set of photovoltaic power station system. Compared with the choose and buy all kinds of components for assembly, choose a big brand photovoltaic system installed directly to the after-sale service more convenient and guaranteed.