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Railway applications Fixed installations Electrical safety, earthing and the return circuit Part 3: Mutual Interaction of a.c. and d.c. traction systems. Original standard UNE-EN 50122-3-2011 in PDF full version. Additional info + preview on request

Document status: Replaced by STB UNE-EN 50122-3-2023

Railway applications - Fixed installations - D.C. switchgear Part 1: General. Original standard UNE-EN 50123-1-2004 in PDF full version. Additional info + preview on request

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Railway applications - Fixed installations - D.C. switchgear Part 2: D.C. circuit breakers. Original standard UNE-EN 50123-2-2004 in PDF full version. Additional info + preview on request

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Railway applications Fixed installations D.C. switchgear Part 3: Indoor d.c. disconnectors, switch-disconnectors and earthing switches. Original standard UNE-EN 50123-3-2004 in PDF full version. Additional info + preview on request

Document status: Active

Amendment 1 - Railway applications - Fixed installations - D.C. switchgear - Part 6: D.C. switchgear assemblies. Original standard UNE-EN 50123-6-2004 A1-2015 in PDF full version. Additional info + preview on request

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Railway applications - Fixed installations - D.C. switchgear Part 7-1: Measurement, control and protection devices for specific use in d.c. traction systems - Application guide. Original standard UNE-EN 50123-7-1-2004 in PDF full version. Additional info + preview on request

Document status: Active