IEC 62128-1:2013

FOREWORD
1 Scope
2 Normative references
3 Terms and definitions
4 Contact line zone and current collector zone
5 Protective provisions against direct contact
6 Protective provisions against indirect contact
7 Protective provisions for low voltage non-traction
   power supplies
8 Protective provisions where track systems, which
   are utilized for carrying traction return current,
   or/and contact line systems pass through hazardous
   zones
9 Limits for touch voltage and protective provisions
   against the danger of rail potential
10 Additional protective provisions
Annex A (informative) - Typical obstacles
Annex B (normative) - Warning sign
Annex C (informative) - Guiding values for rail potential
        gradient
Annex D (informative) - Effective touch voltage and body
        voltage with respect to the body current
Annex E (normative) - Measurement methods for effective
        touch voltages
Annex F (normative) - The use of voltage-limiting devices
Annex G (normative) - Special national conditions
Annex H (normative) - A-deviations
Annex I (informative) - Principles for the return circuit
        of a.c. railways
Bibliography

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.