That is, when the line failure, the relaycircuit breaker tripping, the device auto-reclosing after a short time interval, so that a re-breaker.
即当线路出现故障，继电保护使断路器跳闸后，自动重合闸装置经短时间间隔后使断路器重新合上。
2
Because the voltage measuring error increases when phase to phase shortcircuit occurs, distance relay protection will act improperly.
但是短线路在两相短路时，由于测量电压的误差会放大，可能引起距离保护的超越。
3
WJJL1 intelligence over current relay is a typical electronic apparatus which has over current, shortcircuit, over voltage, under curent, phase faults and starting failure protective functions.