Abstract: The electric switch machine (hereinafter referred to as "switch") plays a very important role in railway traffic safety, especially the mixed circuit fault, which directly affects the traffic safety. This paper mainly introduces the switch circuit equipment grounding and wiring short circuit. The use of the current method can quickly, accurately and intuitively determine the fault point. Through the field practical application and research, it puts forward the treatment method for ZD6 switch mixed line circuit fault, which is worthy of reference.

Key words: mixed line fault, current method, ZD6 turnout

摘要： 电动转辙机在铁路行车安全中起重要作用，若发生电路混线故障，将直接影响行车安全。介绍道岔电路出现设备接地及配线短路，利用电流法能迅速、准确、直观的判断出故障点，通过现场实际应用及研究,对处理ZD6道岔混线电路故障提出处理方法，具有一定借鉴意义。

关键词: 混线故障, 电流法, ZD6道岔