用于ZPW-2000A无绝缘轨道电路的轨旁设备与钢轨间的电气连接，通过引接线将设备与钢轨可靠连接，保证移频信息在钢轨上的可靠传输；标准长度为2、2.2、2.5、3.7、3.9、4.2米五种，特殊长度可订做；引接线的端子可以采取冷压接端子和塞钉两种方式；钢包铜引接线质量满足铁道部门的行业技术要求。

   This steel-clad-copper rail lead wire is used for the electrical connection between trackside equipment of ZPW-2000A uninsulated track circuit and rails. The equipment and rails are tightlyconnected through lead wire to ensure the reliable transmission of frequency shift information on the rails.The standard length includes 2m,2.2m,2.5m, 3.7m,3.9m, and 4.2m and customized length isavailable.Lead terminals can be cold crimp terminals and plug pin. The steel-clad-copper rail lead wire’s quality meets the technical requirements of railway industry.

   依据标准：《ZPW-2000A钢包铜钢轨引接线技术条件》（暂行），本技术条件由铁道部标准计量研究院提出并归口。
   Applicable standard: ZPW-2000A Technical Conditions of Steel-Clad-Copper Rail Lead Wire (temporary). This technical condition is proposed and management by Institute of Standard Metrology of Ministry of Railways.