WG 49 - TC 9/WG 49

IEC 62128-1:2013 specifies requirements for the protective provisions relating to electrical safety in fixed installations associated with a.c. and/or d.c. traction systems and to any installations that can be endangered by the traction power supply system. It also applies to all aspects of fixed installations that are necessary to ensure electrical safety during maintenance work within electric traction systems. This standard applies to all new lines and to all major revisions to existing lines. The main technical changes with regard to the previous edition are the restructuring of all clauses and changes in the touch voltages limits.

IEC 62128-2:2013 specifies requirements for protective provisions against the effects of stray currents, which result from the operation of d.c. traction systems. This standard applies to all metallic fixed installations which form part of the traction system, and also to any other metallic components located in any position in the earth, which can carry stray currents resulting from the operation of the railway system. This standard applies to all new d.c. lines and to all major revisions to existing d.c. lines. The main technical changes with regard to the previous edition are the restructuring of all clauses.

IEC 62128-3:2013 specifies requirements for the protective provisions relating to electrical safety in fixed installations, when it is reasonably likely that hazardous voltages or currents will arise for people or equipment, as a result of the mutual interaction of a.c. and d.c. electric traction systems. It also applies to all aspects of fixed installations that are necessary to ensure electrical safety during maintenance work within electric traction systems. This standard applies to all new lines, extensions and to all major revisions to existing lines.