Shielded T Rear Surge Arrester

The function of the surge arrester is to protect various electrical equipment in the power system from damage caused by lightning overvoltage, operating overvoltage, and power frequency transient overvoltage. The main types of lightning arresters are protective gaps, valve arresters and zinc oxide arresters. The protective gap is mainly used to limit the atmospheric overvoltage, and is generally used for the protection of the incoming line section of the power distribution system, line and substation. Valve-type arresters and zinc oxide arresters are used for the protection of substations and power plants. In 500kV and below systems, they are mainly used to limit atmospheric overvoltages. In ultra-high voltage systems, they will also be used to limit internal overvoltages or as internal overvoltages. Backup protection.

Since surge arresters often work outdoors, they need to have stronger drop resistance, shock resistance and waterproof performance.

Shielded T Rear Surge Arrester provides reliable over-current protection for electrical equipment. Its core component adopts zinc oxide resistors, which greatly improves the volt-ampere characteristics of the resistors and increases the overvoltage retention capacity compared with traditional silicon carbide arresters; It is mainly used in conjunction with the European 630A front connector to provide overvoltage protection for the power grid.