SS EN 50123-4 Ed. 2 (2003)现行
Railway Applications - Fixed Installations - D.C. Switchgear - Part 4: Outdoor D.C. Disconnectors, Switch-Disconnectors And Earthing Switches
出版：Standardiserings-Kommissionen I Sverige
专家解读视频
Defines requirements for outdoor d.c. switch-disconnectors, disconnectors and earthing switches for use in outdoor fixed installations of traction systems.
1ED 1999 is still active. (02/2004)
NEN EN 50123-4:2003 - Identical
UNE EN 50123-4:2004 - Identical
NF EN 50123-4:2004 - Identical
DIN EN 50123-4 (2003-09) - Identical
I.S. EN 50123-4:2003 - Identical
NBN EN 50123-4 Ed. 1 (1999) - Identical
SN EN 50123-4:2003 - Identical
NBN EN 50123-4:2003 - Identical
BS EN 50123-4:2003 - Identical
