voltage blocking造句

• 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。