PLC or Relay control with optional operation of manual and semi-auto.

有电脑、继电器两种控制方式，设有手动、半自动两种操作方式。

youdao

Relay protection and auto mechanism are the important ensure measures for reliable supply and stably running power grid.

继电保护和自动装置是电网安全稳定运行和可靠供电的重要保障措施。

youdao

That is, when the line failure, the relay circuit 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。

youdao