Description

Gapless zinc oxide surge arresters whose rated voltage *0 - **0 kV are protective equipment used for protecting AC transmission and transformation equipment against damage from atmospheric over-voltage and switching over-voltage. According to material of external housing, surge arresters can be divided into porcelain housing type (*5kV***0kV) and polymeric housing type (*****0kV) . Surge arresters can be used in following service conditions: -Ambient temperature **0℃ to **0℃; -Altitude above sea level up to ***0 m; - 9 earthquake intensity The surge arresters have passed all type test specified in IEC******4 at KEMA high power Lab. The surge arresters can be manufactured and tested according to latest version IEC ******4 part 4 "Gapless metal oxide surge arrester for ***** system".