1.范围1。1本标准仅适用于单独安装的无间隙金属氧化物电涌放电器或与其他设备整体供应的电涌放电器。电涌放电器的设计目的是通过在不造成电源中断的情况下通过电涌放电电流来限制50或60 Hz交流电源电路中的电压浪涌。1.2以SI（公制）单位给出的数值为标准值。括号中给出的值仅供参考。

1. Scope1.1This Standard applies only to gapless metal oxide surge arresters of separate mounting or those supplied integrally with other equipment. The surge arresters are designed to limit voltage surges in 50 or 60 Hz alternating current power circuits by passing surge discharge current without causing power interruption.1.2The values given in SI (metric) units are the standard. The values given in parentheses are for information only.