| 1. | Main functions : 3 - stage complex - voltage blocked overcurrent protection , 3 - stage zero - sequence overcurrent protection , clearance discharging zero - sequence overcurrent protection , zero - sequence overvoltage protection , overvoltage alarming , overload alarming , fan start stop , tap changer blocking , pt wire broken blocking and alarming , etc 其保护配置:复合电压闭锁过流段保护,零序过流段保护,间隙放电零序过流保护,零序过压保护。 |