How long is the warranty period of each component of the photovoltaic power station system?
Photovoltaic systems are now more and more widely into thousands of households, modules are the power core of the solar energy system, we have a different understanding of the service life and warranty life of each module.So how long is the warranty time of the components, inverters and accessories of the photovoltaic power generation system?Today with some existing data for you to analyze.
As we know, the warranty of the first-line component enterprises is divided into two categories, one is product warranty, the other is power generation warranty, product warranty is generally 10 years, quality guarantee components can be 25 years; power generation warranty is 25 years, the power generation decay rate in 25 years is about 20%.
1、Inverter
The cost of the inverter is not as high as the components, although the cost is not the highest, but it is the only power electronic part of the entire solar system, and also the brain of the solar system, responsible for turning the DC electricity collected by the components into AC power, which is very important.But an excellent solar system, must be inseparable from the stable operation, tracking the high efficiency of the solar inverter, so, the solar inverter should be guaranteed for several years?
The choice of the inverter is related to the power generation problem of the whole system.Now the quality of the inverter warranty is mostly 5 years, warranty period until the extended warranty to 25 years.Similarly, we can select the quality assurance documents of the world's leading solar inverter enterprises for comparison, usually providing 5 years of quality assurance.
In addition to solar components and inverters, one main part is the bracket system.The bracket is a fixed protection role for the photovoltaic modules, and it is also the main part of the whole system. The support is made of aluminum alloy and steel structure.
In terms of the material itself, both categories can be used for more than 25 years.However, due to its different process, and there are subtle differences, such as: steel bracket system, the surface needs to have enough galvanized thickness, usually using the hot-dip zinc process, with pressure resistance, wind resistance, corrosion resistance, the service life can reach more than 25 years.If the surface treatment process and its own strength are not enough, it may be damaged in three or five years.And the aluminum alloy solar mounting system itself has a certain corrosion resistance, antioxidant characteristics, plus the surface of the anodic oxidation treatment, the service life can reach more than 25 years.
In particular is that the wind resistance of the bracket system, including positive wind pressure and negative wind pressure, should usually reach above 12 in coastal cities and above 14, while in inland cities, it should be 12.
The support system should be made of materials supplied by carefully designed support manufacturers, and mature and reasonable schemes should be selected, rather than fully DIY. Design by experience, especially the steel structure support system, should be designed and verified by a qualified design institute.Otherwise, a strong wind could collapse the entire solar system.
3. Other accessories
In addition to the components, inverters and brackets, the rest are cables, electrical cabinets and other auxiliary materials.Because the cable is a common part, the outdoor use should choose anti-ultraviolet, anti-aging photovoltaic special DC cable, because the photovoltaic system can withstand the wind and rain all the year round, so as to ensure the service life and corrosion resistance of the cable.
The cables used in households should carry sufficient traffic, the communication cables should ensure anti-interference ability, and the service life can reach more than 25 years.Other auxiliary materials according to the actual use situation, in the absence of man-made damage, the service life can be more than 25 years.
Through the above points, we can analyze that the life of the whole system, or the warranty should be the shortest product as the period, and then through the equipment replacement and maintenance of the whole system life warranty.Comprehensive component warranty is 10 years, power generation warranty is 25 years; inverter comprehensive warranty is 5 years, with extended warranty to 25 years; other materials warranty is 25 years.