Metal oxide surge arresters with series gaps for d . c . system 直流有串联间隙金属氧化物避雷器
2.
Polymeric housed metal oxide surge arresters with series gap for a . c . electric power transmission line 交流输电线路用复合外套有串联间隙金属氧化物避雷器
3.
Metal oxide surge arresters with series gaps part 2 : metal oxide surge arresters with series gaps for a . c . systems of 35kv and below 串联间隙金属氧化物避雷器.第2部分: 35kv及以下交流系统用有串联间隙金属氧化物避雷器