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IEC 61472-2-ed.1.0
Live working - Minimum approach distances - Part 2: Method of determination of the electrical component distance for AC systems from 1,0 kV to 72,5 kV
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STANDARD published on 9.3.2021
The information about the standard:
Designation standards: IEC 61472-2-ed.1.0
Publication date standards: 9.3.2021
SKU: NS-1020004
Approximate weight : 300 g (0.66 lbs)
Country: International technical standard
Category: Technical standards IEC
Annotation of standard text IEC 61472-2-ed.1.0 :
IEC 61472-2:2021 specifies a method for determining the electrical component of the minimum approach distances for live working, for AC systems 1 kV up to and including 72,5 kV. This document addresses system overvoltages and the working air distances between equipment and/or workers at different potentials. The withstand voltage and minimum approach distances determined by the method described in this document can be used only if the following working conditions prevail: workers are trained for, and skilled in, working live lines or close to live conductors or equipment; the operating conditions are adjusted so that the statistical overvoltage does not exceed the value selected for the determination of the required withstand voltage; transient overvoltages are the determining overvoltages; tool insulation has no continuous film of moisture present on the surface; no lightning is observed within 10 km of the work site; allowance is made for the effect of the conducting components of tools. IEC 61472-2:2021 specifie une methode pour determiner la composante electrique des distances minimales d’approche pour le travail en direct, pour les systemes AC 1 kV jusqu’a 72,5 kV et y compris. Ce document traite des survoltages du systeme et des distances aeriennes de travail entre l’equipement et/ou les travailleurs a differents potentiels. La tension de resiste et les distances minimales d’approche determinees par la methode decrite dans ce document ne peuvent etre utilisees que si les conditions de travail suivantes prevalent: les travailleurs sont formes et qualifies dans les lignes de travail en direct ou a proximite de conducteurs ou d’equipement vivants; les conditions d’exploitation sont ajustees de sorte que la surtension statistique ne depasse pas la valeur selectionnee pour determiner la tension de resiste requise; les survoltages transitoires sont les survoltages determinants; l’isolation de l’outil n’a pas de film continu de l’humidite presente a la surface; aucune foudre n’est observee a moins de 10 km du chantier; l’effet des composants conducteurs des outils.
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