轨道停电监督电路存在的联锁隐患

轨道停电监督继电器（GDJ）采用850型的时间继电器,在电源切换时,不能失磁落下,解锁电源KZ-GDJ不能断电,构成联锁隐患。如果在电源切换时,开放进路中的信号检查继电器（XJJ）因故（列车进入或者故障）失磁落下,则在LXJ缓放期间,能够沟通进路中的1LJ电路,进而造成进路迎面错误解锁。故对上述问题做了分析与修改。

Hidden Interlocking Risks in the Track Power Surveillance Circuit

Rail power supervision relays GDJ adopt 850 type timing relay.When the power switches over,it cannot loss excitation to drop and the unlocking power KZ-GDJ can＇t loss electricity,which would be a interlocking hidden dangers.When the power switches over,the signal check relay XJJ in the open route will drop due to loss of excitation when trains enter or faults happen so that it can approach 1LJ circuit during the slow release of LXJ and further cause the route on a wrong unlock.So,some analysis and modification are made to address those problems.