DIN EN 50122-1:2011
軌道交通.固定設備.電氣安全, 接地和回路.第1部分:抗電擊的保護性規定;德文版本EN 50122-1-2011 + A1-2011
Railway applications - Fixed installations - Electrical safety, earthing and the return circuit - Part 1: Protective provisions against electric shock; German version EN 50122-1:2011 + A1:2011