The most important component of the front end of the power station is the solar module, also known as the photovoltaic panel, the panel. Its quality will undoubtedly directly affect the efficiency and service life of this system. How can laymen distinguish the quality of the l channel steel panel?
Need the necessary “five look” skills
A look at the business.
Look at the supplier of the component. Look at whether it is a mainstream brand in the industry, whether it is a public enterprise listed by the Ministry of Industry and Information Technology. Up to now, a total of 244 batches have been announced. There is a saying that “the bottom of the tree is good for the cool”, the warranty and after-sales service of the big brand components are guaranteed.
Second, look at the welding process.
Look at the battery string welding when there is no leakage welding, this can be seen directly through the appearance.
Third, look at the quality of the back pressure.
There is no unevenness in the pressure, or bubbles, wrinkles, etc. It is not difficult to find bubbles and wrinkles, as you can see in the sun.
Fourth look at the quality of the border.
Is it strictly rectangular, and the error is not too big.
Five look at the conversion rate.
High conversion rate is the guarantee of stable income! This conversion efficiency surface is invisible and requires comparison of component parameters. Take the commonly used 60-piece polycrystalline silicon photovoltaic module as an example: the conversion efficiency of the 250W photovoltaic module is 15.4%; the conversion efficiency of the 255W photovoltaic module is 15.7%; the conversion efficiency of the 260W photovoltaic module is 16%; and the conversion efficiency of the 265W photovoltaic module is 16.3. %; conversion efficiency of 270W photovoltaic module is 16.6%;
Photovoltaic modules are an important part of photovoltaic power plants. Once problems arise, the photovoltaic power plants built by ordinary people will not be able to generate electricity, let alone the benefits. Therefore, whether in the city or in the countryside, users must learn to self-identify the quality of the components, and put the first pass of the power station.