EN 50123-7-1:2003
轨道交通.固定装置.直流开关设备.第7-1部分:直流牵引系统中专门使用的测量,控制及保护装置应用指南;替代 ENV 50123-7-1-1999
Railway applications Fixed installations D.C. switchgear Part 7-1: Measurement, control and protection devices for specific use in d.c. traction systems Application guide