7PA54三相系列跳闸回路监视继电器专为电力系统断路器跳闸回路完整性监视而设计，可在断路器合闸或分闸状态下连续监视跳闸回路，及时发现跳闸线圈、断路器辅助触点及相关二次接线等回路异常并输出告警信号，为继电保护跳闸命令的可靠执行提供状态监视保障。

The 7PA54 three phase series trip circuit supervision relays are specifically designed for monitoring the integrity of circuit breaker trip circuits in power systems. They can continuously monitor the trip circuit in both the circuit breaker closed and open states, promptly detecting abnormalities in the trip coil, circuit breaker auxiliary contacts, and related secondary wiring, and outputting alarm signals. This provides status monitoring assurance for the reliable execution of protection trip commands.