LIVE WORKING - MINIMUM APPROACH DISTANCES FOR A.C. SYSTEMS IN THE VOLTAGE RANGE 72,5 KV TO 800 KV - A METHOD OF CALCULATION
International Electrotechnical Committee
FOREWORD
1 Scope
2 Terms, definitions and symbols
3 Methodology
4 Factors influencing calculations
5 Evaluation of risks
6 Calculation of minimum approach distance D[A]
Annex A (informative) - Ergonomic distance
Annex B (informative) - Overvoltages
Annex C (informative) - Dielectric strength of air
Annex D (informative) - Gap factor k[g]
Annex E (informative) - Allowing for atmospheric
conditions
Annex F (informative) - Influence of floating conductive
objects on the dielectric strength
Annex G (informative) - Live working near contaminated,
damaged or moist insulation
Bibliography
Specifies a method for calculating the minimum approach distances for live working, at maximum voltages between 72,5 kV and 800 kV.
| Document Type | Standard |
| Status | Current |
| Publisher | International Electrotechnical Committee |
| Committee | TC 78 |
