With the continuous improvement of people's living standards, the use of lightning arresters in our daily lives is becoming more and more common. Lightning arresters, also known as arresters, surge protectors, surge protectors, overvoltage protectors, etc., mainly include power surge protectors and signal surge protectors. Lightning protectors are protected from lightning strikes through modern electrical and other technologies. The device is damaged. Although lightning protectors are more common in daily life, few people know much about the role and characteristics of lightning protectors. If you want to choose a good lightning arrester, you must learn more about the performance characteristics of lightning protectors. It can play its role more effectively. We are a professinal manufacturer for high precision burring punch pins for stepped punch,special burring punch for mould,customized punch pin,Precision Standard Burring punches,Burring punch.With top quality,best price and fast leadtime.OEM drawing is welcome.Looking forward to cooperate with you and your esteemd company soon. Burring Punch,Precision Standard Burring Punches,Silicon Carbride Bur Burring Punch,Hp40 Burring Punch Changsha Borun Mould Co. Ltd. , https://www.borunmouldparts.com
Among them, the role of lightning protection device is used to protect a variety of electrical equipment in the power system from lightning over-voltage, over-voltage operation, transient over-voltage power frequency damage and an electrical appliance. The types of surge arresters are mainly protective gaps, valve arresters, and zinc oxide surge arresters. The protection gap is mainly used to limit atmospheric over-voltage, and is generally used for protection of power distribution systems, lines, and substations. Valve arresters and zinc oxide surge arresters are used for the protection of substations and power plants. In 500KV and below systems are mainly used to limit the atmospheric overvoltage, in the ultrahigh voltage system will also be used to limit the internal overvoltage or within Overvoltage backup protection. Surge protection should also have the following performance characteristics:
First, the number of impact resistance, determine the life of the arrester, gas discharge tube for a period of time after the performance will not decline, unless the leak. To measure it, you can use adjustable high-voltage DC power supply testing, or lightning protection device tester.
Second, the reaction time, determine whether the lightning protection device can respond in time, quickly discharge. 
Third, the insertion loss refers to the impact of the SPD on the line. Basically it is judged from these three indicators. The lightning arrester and the protected electrical equipment are connected in parallel, if the arrester is close to the electrical equipment. (If the electrical distance is set to be l=0), the voltage on the electrical equipment during a lightning strike is equal to the residual voltage of the arrester, and the lower the residual voltage, the lower the U equipment is charged and the safer. 
Therefore, during the selection process, the lightning arrester must fully understand its performance and characteristics, and ensure that it plays a substantial role in the application process. Nowadays, with the increasing number of electronic products, the demand for lightning arresters has gradually increased. Therefore, it is important to choose a good lightning protection device. At the same time, Kejia Electric reminds its customers that after learning the relevant performance and role of the SPD, if it is necessary to purchase the SPD, it must also be purchased by a regular manufacturer, and the SPD must be inspected and passed by the SPD. Ensure that the product plays an effective protective role in practical applications.