He then noticed down the road that the breaker on the power pole was tripped.
然后，他看到了未来的道路上的断路器电力杆绊倒。
2
The cause of the improper trip of 4 pole circuit breaker was analyzed. A subsidiary power voltage is applied to solve the problem.
分析了4极断路器非正常跳闸的原因，提出采用施加外接辅助电源电压的解决措施。
3
Functions of distribution automation in power system were discussed, and an automatic operation model of pole top breaker in distribution system was analyzed.