Lightning varistor main protection

Varistors are commonly used in lightning protection and anti-surge surges at the power entry of equipment. The main parameters of the varistor are: varistor voltage, flow capacity, junction capacitance, response time, and so on. What is the main function of the commonly used lightning protection varistors, for which a brief introduction is made. Let's take a look together.

The function of the lightning varistor is an electrical device used to protect various electrical equipment in the power system from being damaged by lightning overvoltage, operating overvoltage, and transient overvoltage of power frequency. 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 lightning varistors are used for the protection of substations and power plants. In 500KV and below systems are mainly used to limit atmospheric overvoltage, in super

The high voltage system will also be used to protect the internal overvoltage or internal overvoltage protection.

Varistors are commonly used as a resistance device, and the advantages of protection are constantly improving the development field.