What Is The Lifespan Of A Surge Protector?
Surge protector is an important part of internal lightning protection. It can discharge the lightning surge that invades the line to the grounding device, thereby protecting the safety of equipment and people. For the internal lightning protection design with surge protection device installed, we can usually work safely and boldly on thunderstorm days. However, some readers may have questions. Although the surge protector is very effective, how long is its life? How long does it take to replace the lightning protector?
Before talking about surge protective device, let's talk about what factors are related to the life of surge protectors. The working principle of surge protector is to use a discharge gap or varistor, which usually presents high resistance characteristics. When the lightning surge invades the line, it can quickly turn on and present low resistance characteristics, thereby discharging the lightning current to the ground.
However, when this discharge gap or varistor has deteriorated, the corresponding follow-up or leakage current will become larger, which will cause it to be turned on even if there is no lightning surge invading the line, causing the surge protector to generate a lot of heat and burn, and in severe cases, even fire. Therefore, the direct factor that determines the life of the surge protector is its degree of deterioration.
How long is the life of a surge protector? It is directly related to the quality of the current power grid system and the quality of the surge protector itself. Simply put, if the power grid is of good quality, there is usually no surge or little voltage fluctuation, and the SPD is of good quality, the service life of the surge protector is very long and can be used for more than 5 years. On the contrary, if the power grid is of poor quality and the surge is continuous, and the SPD is of poor quality, some will break down in a few months. When the surge protector reaches the end of its life, the indicator window on the front of the product will display red. Some lightning arresters also have a remote signaling function, which can promptly notify the management personnel of the broken information so that it can be replaced immediately.
In order to ensure a longer life of the surge protector, Hangzhou Yizao's composite surge protector with no continuous current and no leakage current can be used. In this way, its life can reach 10 years or even longer. This is the advanced technology in the current lightning protection industry. If your project has particularly high safety requirements, such as data room, wind power, photovoltaic, transportation and other projects, it is recommended to choose a composite SPD.
