转辙机手动安全功能浅析  

Analysis of Manual Operation Safety Function of Switch Machine

作　　者：丁召荣 

机构地区：[1]西安铁路信号有限责任公司

出　　处：《铁道通信信号》2016年第12期10-12,共3页Railway Signalling & Communication

摘　　要：转辙机的手动安全功能在四线制直流转辙机控制电路中,仅用一个安全接点就可以实现,但五线制三相交流转辙机控制电路中,需安全接点与断相保护器及保护继电器相互配合。由于器材的延时及缓放特性,维护过程中人身伤害的隐患并不能完全排除,需配合规章制度以保证人身安全。The safety function for manual operation in the four-wire control circuit of DC point machine can be realized by using only one contact while the same function in the five-wire control circuit of three-phase AC point machine must be realized with the cooperation of the safety contact and the open-phase protector and the protection relay.Due to the characteristic of delay release or delay action of the equipment,hazards to personal injure cannot be removed thoroughly in the process of maintenance and corresponding regulations and rules must be established to enforce personal safety.

关 键 词：手动安全功能 安全接点 断相保护器 缓放 

分 类 号：U284.72[交通运输工程—交通信息工程及控制]