RAILWAY APPLICATIONS - FIXED INSTALLATIONS - ELECTRICAL SAFETY, EARTHING AND THE RETURN CIRCUIT - PART 1: PROTECTIVE PROVISIONS AGAINST ELECTRIC SHOCK
International Electrotechnical Committee
FOREWORD<br>1 Scope<br>2 Normative references<br>3 Terms and definitions<br>4 Contact line zone and current collector zone<br>5 Protective provisions against direct contact<br>6 Protective provisions against indirect contact<br>7 Protective provisions for low voltage non-traction <br> power supplies<br>8 Protective provisions where track systems, which <br> are utilized for carrying traction return current, <br> or/and contact line systems pass through hazardous <br> zones<br>9 Limits for touch voltage and protective provisions <br> against the danger of rail potential<br>10 Additional protective provisions<br>Annex A (informative) - Typical obstacles<br>Annex B (normative) - Warning sign<br>Annex C (informative) - Guiding values for rail potential <br> gradient<br>Annex D (informative) - Effective touch voltage and body <br> voltage with respect to the body current<br>Annex E (normative) - Measurement methods for effective <br> touch voltages<br>Annex F (normative) - The use of voltage-limiting devices <br>Annex G (normative) - Special national conditions<br>Annex H (normative) - A-deviations <br>Annex I (informative) - Principles for the return circuit <br> of a.c. railways <br>Bibliography
Defines 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.
| Document Type | Standard |
| Status | Current |
| Publisher | International Electrotechnical Committee |
| Committee | TC 9 |
