The grades of solar panels can be divided into A grade, B grade, C grade and D grade, and A grade components can be divided into two grades of A + and A-, the same is also true for B type. Different grades of solar panels have different cost differences. Very big. What kind of solar panel is called Class A and what kind of solar panel is called Class D? The following Yanan will give you a brief introduction:
A-level components: A-level batteries are the highest quality level, and can be used by components;
B-level components: B-level batteries are slightly lower than A-level, and the complete batteries can be used for downgrade;
Class C components: Class C cells are severely defective and lack corners. They are only suitable for cutting cells to make small components and supply them to customers with special needs;
Class D components: Class D cells are broken pieces and are supplied to customers with special needs or special treatment.
How should we judge?
Judging the grade of the solar panel from the following two points:
1. Appearance judgment
1. Look at the surface
Look closely at the surface of the tempered glass. The products of small manufacturers are relatively rough. The residual silicone on the surface will reduce the power generation efficiency of the panel.
2. Look at the battery
Check whether the battery chip has cracks and cracks. There are many irregular manufacturers splicing with broken battery pieces. This method has great risks and will affect the safe use of the entire battery board.
3. Look at the back
Look at the quality of the back pressure. If there are irregularities after pressure, such as bubbles and wrinkles, it is regarded as a relatively inferior product.
4. Look at the border
Is it straight. Due to the low barriers to entry in the solar panel industry, many small manufacturers use manual framing, the shape is not strictly rectangular, and the firmness is also greatly reduced.
5. Look at the silicone
See if the silica gel is evenly distributed around the back, and see if it tightly penetrates into the gap between the back plate and the frame.
6. Watch welding
Carefully observe whether there is a leakage phenomenon in the string welding of the cells. At the same time, it also depends on whether the arrangement of battery cells is regular.
7. Look at the junction box
Finally, see whether the junction box is firm, whether the junction box cover can be firmly and tightly attached to the junction box, and whether the outgoing wire lock can rotate freely and can be tightened.
Second, the purchase channel
Whether to buy from authorized dealers and agents of regular large-brand manufacturers, and check and check the warranty contract, invoices, etc., these determine whether you can buy A-level components and enjoy more after-sales service and 25-year warranty .
With the rise of photovoltaic power generation, many component factories have also been added to the market. Some module factories have strict factory inspections during the production of photovoltaic modules, and the modules are divided into A, B, C, and D grades according to performance and appearance. And some small component factories just follow the trend, purchase old batteries, and then process and sell them. For those who are new to the industry, it will be easy to buy these B-level and C-level components, and they will be broken in less than a few years. Class A components have excellent performance and a life of at least 25 years. Generally speaking, only Class A components can be circulated on the market.
What are the A, B, and C-level components generally used in?
Class A components: mainly used in ground power stations, distributed power stations, household systems, etc., with a life span of more than 25 years.
Class B components: mainly used for street lights, off-grid systems, battery cars, etc., 5 years of life. This type of component is a class A degraded component or a B-grade material, and the price is about 3 yuan.
Class C components: mainly used in underdeveloped areas, such as remote areas, Afghanistan, Middle East, South Africa, etc. The life span is unknown.
Therefore, when choosing photovoltaic power plant components, one should not value the small profits, to save costs regardless of the quality of the components, but also to keep your eyes open and not be deceived by irregular businesses.
Hp Graphite Electrode,Graphite Electrodes Hp,Nipples Electrode Graphite,Carbon Graphite Electrode For Sale
Carbographite Industrial PTE.LTD , https://www.graphites.pl