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IEC 60099-6-ed.2.0
Surge arresters - Part 6: Surge arresters containing both series and parallel gapped structures - System voltage of 52 kV and less
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STANDARD published on 22.5.2019
The information about the standard:
Designation standards: IEC 60099-6-ed.2.0
Publication date standards: 22.5.2019
SKU: NS-950856
The number of pages: 165
Approximate weight : 526 g (1.16 lbs)
Country: International technical standard
Category: Technical standards IEC
The category - similar standards:
Annotation of standard text IEC 60099-6-ed.2.0 :
IEC 60099-6: 2019 applies to non-linear metal-oxide resistor type surge arresters with spark gaps designed to limit voltage surges on AC power circuits with system voltages Us above 1 kV up to and including 52 kV. This document basically applies to all metal-oxide distribution class surge arresters with internal series and/or parallel gaps and housed in either porcelain or polymeric housings. This second edition cancels and replaces the first edition published in 2002. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: a) A new concept of arrester classification and energy withstand testing was introduced: the line discharge classification was replaced by a classification based on repetitive charge transfer rating (Qrs) and thermal charge transfer rating (Qth). The new concept clearly differentiates between impulse and thermal energy handling capability, which is reflected in the requirements as well as in the related test procedures. b) Power-frequency voltage versus time tests – with and without prior duty – were introduced as type tests. c) Requirements and tests on disconnectors were added. d) Definitions for new terms have been added. e) Clause 10 contains particular requirements for polymer-housed surge arresters. These are indicated in the form of replacements, additions or amendments to the original clauses or subclauses concerned. Keywords: testing of metal-oxide surge arresters IEC 60099-6: 2019 sapplique aux parafoudres a resistance variable a oxyde metallique avec eclateur concus pour limiter les surtensions sur les circuits dalimentation a courant alternatif avec des tensions de reseau Us superieures a 1 kV, et inferieures ou egales a 52 kV. Le present document s’applique fondamentalement a tous les parafoudres de classe de distribution a oxyde metallique avec eclateurs en serie et/ou en parallele internes, et a enveloppes en porcelaine ou synthetiques. Cette deuxieme edition annule et remplace la premiere edition parue en 2002. Cette edition constitue une revision technique. Cette edition inclut les modifications techniques majeures suivantes par rapport a ledition precedente. a) Un nouveau concept de classification des parafoudres et dessai de tenue energetique a ete introduit: la classification de decharge de ligne a ete remplacee par une classification fondee sur les caracteristiques assignees de transfert de charges repetitives (Qrs) et les caracteristiques assignees de transfert de charges thermiques (Qth). Le nouveau concept differencie clairement le choc de la capacite de traitement de lenergie thermique, cette difference etant refletee dans les exigences, ainsi que dans les procedures d’essai associees. b) Des essais de tension de tenue a frequence industrielle en fonction du temps – avec et sans service prealable – ont ete introduits comme essais de type. c) Des exigences et des essais portant sur les dispositifs de deconnexion ont ete ajoutes. d) Les definitions de nouveaux termes ont ete ajoutees. e) L’Article 10 contient des exigences particulieres pour les parafoudres a enveloppe synthetique. Celles-ci sont indiquees sous la forme de remplacements, dajouts ou damendements aux articles ou paragraphes concernes. Mots cles : essais des parafoudres a oxyde metallique
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