LST EN 50123-7-2-2004 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
2004LST EN 50123-7-2-2004 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