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Amendment 3 - Railway applications Fixed installations Electrical safety, earthing and the return circuit Part 1- Protective provisions against electric shock. Original standard UNE-EN 50122-1-2011 A3-2017 in PDF full version. Additional info + preview on request

Document status: Replaced by STB UNE-EN 50122-1-2023

Amendment 4 - Railway applications Fixed installations Electrical safety, earthing and the return circuit Part 1- Protective provisions against electric shock. Original standard UNE-EN 50122-1-2011 A4-2017 in PDF full version. Additional info + preview on request

Document status: Replaced by STB UNE-EN 50122-1-2023

Corrigendum - RAILWAY APPLICATIONS - FIXED INSTALLATIONS - ELECTRICAL SAFETY, EARTHING AND THE RETURN CIRCUIT - PART 1- PROTECTIVE PROVISIONS AGAINST ELECTRIC SHOCK. Original standard UNE-EN 50122-1-2011 AC V2-2012 in PDF full version. Additional info + preview on request

Document status: Active

Railway applications Fixed installations Electrical safety, earthing and the return circuit Part 2- Provisions against the effects of stray currents caused by d.c traction systems. Original standard UNE-EN 50122-2-2011 in PDF full version. Additional info + preview on request

Document status: Replaced by STB UNE-EN 50122-2-2023

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

Document status: Active