EN 50123-7-2-2003 轨道交通.固定装置.直流开关设备.第7-2部分:直流牵引系统专用测量,控制和保护设备.绝缘电流传感器和电流测量设备
Railway applications Fixed installations D.C. switchgear Part 7-2: Measurement, control and protection devices for specific use in d.c. traction systems Isolating current transducers and other current measuring devices