Surge arrester ZW-42

The shielding-housed arrester, also known as plug type arrester, mainly protects gas insulated composite apparatuses, such as 35kV and below inflatable swithgear, and C-GIS swithgear.This metal-oxide arrester of plug type, which can limit the overvoltage at a lower level, and prevent composite apparatuses from damages by overvoltage, is made by metal-oxide resistors which with most superior performance (and with excellent characteristics of nonlinear volt ampere and steep wave response). For the type of the shielding plug arrester, the compilation method is as the following: a. Ambient temperature : -40℃～+40℃; b. Altitude : no exceeding 5,000m； c. Power frequency : 48Hz～62Hz； d. Earthquake intensity : no exceeding 8； e. The power frequency voltage, which imposed among terminals of arrester for a long term, should don’t exceed the continuous operation voltage of arrester. 4, Competitive Advantages a. It provides reliable protection for power transmission and transformation equipments, by metal-oxide resistors with most superior performance. b. It provides guarantee for the safe operation of power transmission and transformation equipment, by the most unique and safe pressure release device. c. It’s touchable, electric-shock prevented, safety-use and maintenance free, by fully closed metal housing. d. It’s convenient that the type of solid insulating plug is adopted to cooperate on installation. e. At present , compared with similar products, it is the smallest size that provides greater design space for customers.