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; German version EN 50123-7-2:2003
铁路应用——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、控制和保护装置;隔离电流传感器和其他电流测量装置;德文版EN 50123-7-2:2003