FprEN 61643-312

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Composants pour parafoudres basse tension -- Partie 312: Valeurs préférentielles et caractéristiques relatives aux tubes à déchargeComponents for low-voltage surge protective devices -- Part 312: Preferred values and characteristics for gas discharge tubes29.240.10Transformatorske postaje. Prenapetostni odvodnikiSubstations. Surge arresters29.120.50Fuses and other overcurrent protection devicesICS:Ta slovenski standard je istoveten z:FprEN 61643-312:2010kSIST FprEN 61643-312:2010en,fr,de01-marec-2010kSIST FprEN 61643-312:2010SLOVENSKI
STANDARD



kSIST FprEN 61643-312:2010



FORM CDV (IEC)
2009-01-09 ® Registered trademark of the International Electrotechnical Commission37B/99/CDVCOMMITTEE DRAFT FOR VOTE (CDV)PROJET DE COMITÉ POUR VOTE (CDV)Project number IEC 61643-312 Ed. 1.0 Numéro de projet
IEC/TC or SC:
SC 37B CEI/CE ou SC:
Secretariat / Secrétariat USA
Submitted for parallel voting in CENELEC
Soumis au vote parallèle au CENELEC Date of circulation Date de diffusion 2010-01-15 Closing date for voting (Voting mandatory for P-members) Date de clôture du vote (Vote obligatoire pour les membres (P)) 2010-06-18 Also of interest to the following committees Intéresse également les comités suivants TC37, SC37A, TC81 Supersedes document Remplace le document 37B/93/CD and 37B/96A/CC Proposed horizontal standard Norme horizontale suggérée
Other TC/SCs are requested to indicate their interest, if any, in this CDV to the TC/SC secretary
Les autres CE/SC sont requis d’indiquer leur intérêt, si nécessaire, dans ce CDV à l’intention du secrétaire du CE/SC Functions concerned Fonctions concernées
Safety
Sécurité
EMC
CEM
Environment
Environnement
Quality assurance
Assurance qualité CE DOCUMENT EST TOUJOURS À L'ÉTUDE ET SUSCEPTIBLE DE MODIFICATION. IL NE PEUT SERVIR DE RÉFÉRENCE. LES RÉCIPIENDAIRES DU PRÉSENT DOCUMENT SONT INVITÉS À PRÉSENTER, AVEC LEURS OBSERVATIONS, LA NOTIFICATION DES DROITS DE PROPRIÉTÉ DONT ILS AURAIENT ÉVENTUELLEMENT CONNAISSANCE ET À FOURNIR UNE DOCUMENTATION EXPLICATIVE. THIS DOCUMENT IS STILL UNDER STUDY AND SUBJECT TO CHANGE. IT SHOULD NOT BE USED FOR REFERENCE PURPOSES. RECIPIENTS OF THIS DOCUMENT ARE INVITED TO SUBMIT, WITH THEIR COMMENTS, NOTIFICATION OF ANY RELEVANT PATENT RIGHTS OF WHICH THEY ARE AWARE AND TO PROVIDE SUPPORTING DOCUMENTATION.
Titre : CEI 61643-312 Ed. 1.0:
Composants pour parafoudres basse tension - Partie 312: Valeurs préférentielles et caractéristiques relatives aux tubes à décharge
Title : IEC 61643-312 Ed. 1.0:
Components for low-voltage surge protective devices – Part 312: Preferred values and characteristics for gas discharge tubes
Introductory note The existing IEC 61643-311 standard was published in 2001.
The document has a title “Specification for gas discharge tubes (GDT)” which can be interpreted as a specification for testing, of performance values or both.
The contents of the published IEC 61643-311 standard has elements of test specification, performance specification and applications principles.
IEC 37/262/INF introduced a more logical numbering scheme for all IEC-Standards developed within IEC-SC 37B.
Each of the component technologies had three associated documents; a test specification, a performance specification and a selection and applications principles guide.
For this reason, IEC 37/262/INF defines IEC 61643-311 as “Test circuits and methods for gas discharge tubes”, IEC 61643-312 as “Preferred values and characteristics for gas discharge tubes”, and IEC 61643-313 is defined as “Selection and applications principles for gas discharge tubes”. ATTENTION VOTE PARALLÈLE CEI – CENELEC L’attention des Comités nationaux de la CEI, membres du CENELEC, est attirée sur le fait que ce projet de comité pour vote (CDV) de Norme internationale est soumis au vote parallèle.
Les membres du CENELEC sont invités à voter via le système de vote en ligne du CENELEC. ATTENTION IEC – CENELEC PARALLEL VOTING The attention of IEC National Committees, members of CENELEC, is drawn to the fact that this Committee Draft for Vote (CDV) for an International Standard is submitted for parallel voting. The CENELEC members are invited to vote through the CENELEC online voting system.
Copyright © 2010 International Electrotechnical Commission, IEC. All rights reserved. It is permitted to download this electronic file, to make a copy and to print out the content for the sole purpose of preparing National Committee positions. You may not copy or "mirror" the file or printed version of the document, or any part of it, for any other purpose without permission in writing from IEC. ® kSIST FprEN 61643-312:2010



61643-312 Ed. 1/CDV © IEC
2CONTENTS FOREWORD.3 1 Scope.5 2 Normative references.5 3 Technical data.6 3.1 Symbols.6 3.2 Definitions.6 4 Service Conditions.7 4.1 Low temperature.7 4.2 Air pressure and Altitude.7 4.3 Ambient Temperature.7 4.4 Relative Humidity.7 5 Mechanical requirements and materials.8 5.1 Robustness of terminations.8 5.2 Solderability.8 5.3 Radiation.8 5.4 Marking.8 6 General.8 6.1 Failure rates.8 6.2 Standard atmospheric conditions.8 7 Electrical requirements.8 7.1 Initial values.8 7.2 Requirements after application of load.11 Bibliography.13
kSIST FprEN 61643-312:2010



61643-312 Ed. 1/CDV © IEC
3 INTERNATIONAL ELECTROTECHNICAL COMMISSION ____________
COMPONENTS FOR LOW-VOLTAGE SURGE PROTECTIVE DEVICES –
Part 312: Preferred values and characteristics for gas discharge tubes
FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and in addition to other activities, IEC publishes International Standards, Technical Specifications, Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with may participate in this preparatory work. International, governmental and non-governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely with the International Organization for Standardization (ISO) in accordance with conditions determined by agreement between the two organizations. 2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international consensus of opinion on the relevant subjects since each technical committee has representation from all interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any misinterpretation by any end user. 4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications transparently to the maximum extent possible in their national and regional publications. Any divergence between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in the latter. 5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any services carried out by independent certification bodies. 6) All users should ensure that they have the latest edition of this publication. 7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and members of its technical committees and IEC National Committees for any personal injury, property damage or other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC Publications.
8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is indispensable for the correct application of this publication. 9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent rights. IEC shall not be held responsible for identifying any or all such patent rights. International Standard IEC 61643-312 has been prepared by subcommittee 37B: Specific components for surge arresters and surge protective devices, of IEC technical committee 37: Surge arresters. The text of this standard is based on the following documents: FDIS Report on voting XX/XX/FDIS XX/XX/RVD
Full information on the voting for the approval of this standard can be found in the report on voting indicated in the above table. This publication has been drafted in accordance with the ISO/IEC Directives, Part 2. kSIST FprEN 61643-312:2010



61643-312 Ed. 1/CDV © IEC
4The committee has decided that the contents of this publication will remain unchanged until the maintenance result date1) indicated on the IEC web site under "http://webstore.iec.ch" in the data related to the specific publication. At this date, the publication will be
• reconfirmed, • withdrawn, • replaced by a revised edition, or • amended.
1) The National Committees are requested to note that for this publication the maintenance result date is 2015 kSIST FprEN 61643-312:2010



61643-312 Ed. 1/CDV © IEC
5
COMPONENTS FOR LOW-VOLTAGE SURGE PROTECTIVE DEVICES –
Part 312: Preferred values and characteristics for gas discharge tubes
1 Scope This international standard is applicable to gas discharge tubes (GDT) used for overvoltage protection in telecommunications, signalling and low-voltage power distribution networks with nominal system voltages up to 1 000 V (r.m.s.) a.c. and 1 500 V d.c.They are defined as a gap, or series of gaps, in an enclosed discharge medium other than air. They are designed to protect apparatus or personnel, or both, from high transient voltages. This standard contains a series of test criteria, test methods and test circuits for determining the electrical characteristics of GDTs having two or three electrodes. This standard does not specify requirements applicable to compl
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