EN IEC 61643-331:2018
(Main)Components for low-voltage surge protective devices - Part 331: Performance requirements and test methods for metal oxide varistors (MOV)
Components for low-voltage surge protective devices - Part 331: Performance requirements and test methods for metal oxide varistors (MOV)
IEC 61643-331:2017E) is a test specification for metal oxide varistors (MOV), which are used for applications up to 1 000 V AC or 1 500 V DC in power line, or telecommunication, or signalling circuits. They are designed to protect apparatus or personnel, or both, from high transient voltages. This specification applies to MOVs having two electrodes and hybrid overvoltage protection components. This specification also does not apply to mountings and their effect on the MOV’s characteristics. Characteristics given apply solely to the MOV mounted only in the ways described for the tests. This second edition cancels and replaces the first edition published in 2003. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: a) Update of the nominal varistor voltage test method; b) Addition of thermally protected varistors – component symbol and test methods; c) Addition of nominal discharge current – test methods; d) Addition of voltage ratings for disc types (Table 1); e) Addition of test currents for clamping voltage of disc types (Table 2); f) Addition of typical voltage ratings of SMD types (Table 3); and g) Addition of Limited current and temporary overvoltage tests for thermally protected varistors. Keywords: metal oxide varistors (MOV), high transient voltages.
Bauelemente für Überspannungsschutzgeräte für Niederspannung - Teil 331: Leistungsanforderungen und Prüfverfahren für Metalloxidvaristoren (MOV)
Composants pour protection par parafoudres basse tension - Partie 331: Exigences de performance et méthodes d’essai pour les varistances à oxyde métallique (MOV)
IEC 61643-331:2017 traite des spécifications d'essais relatifs aux varistances à oxyde métallique (VOM), utilisées pour des applications sur des lignes d'alimentation, de télécommunication ou des circuits de signalisation de 1 000 V CA ou 1 500 V CC au plus. Elles sont conçues pour protéger le matériel, le personnel ou les deux des tensions transitoires élevées. Ces spécifications s'appliquent aux VOM qui disposent de deux électrodes et de composants hybrides de protection contre la surtension. Par ailleurs, ces spécifications ne s'appliquent pas aux supports de fixation et à leur effet sur les caractéristiques des VOM. Les caractéristiques présentées ne s'appliquent qu'aux VOM montées selon les méthodes décrites pour les essais. Cette deuxième édition annule et remplace la première édition parue en 2003. Cette édition constitue une révision technique. Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente: a) mise à jour de la méthode d'essai de tension nominale de varistance; b) ajout des varistances à protection thermique – symbole de composant et méthodes d'essai; c) ajout du courant nominal de décharge – méthodes d'essai; d) ajout de caractéristiques de tensions pour les types à disques (Tableau 1); e) ajout de courants d'essai pour la tension d'écrêtage des types à disques (Tableau 2); f) ajout de caractéristiques de tensions typiques des types de CMS (Tableau 3); et g) ajout d'essais en courants limités et surtensions temporaires pour les varistances à protection thermique. Mots clés : varistances à oxyde métallique (VOM), tensions transitoires élevées
Sestavni deli za nizkonapetostne naprave za zaščito pred prenapetostnimi udari - 311. del: Zahteve za lastnosti in preskusne metode za kovinsko-oksidne varistorje (MOV)
V tem delu standarda IEC 61643 je obravnavana uporaba izolacijskih transformatorjev (SIT), ki se uporabljajo pri telekomunikacijskih transformatorjih z ravnmi signala do 400 V od vršne vrednosti do vršne vrednosti. Ti transformatorji imajo visoko nazivno udarno napetost z zaslonom med vhodnim in izhodnim navitjem ali brez njega. Izolacijski transformatorji (SIT) so komponente za zaščito pred prenapetostnimi udari in se uporabljajo za širjenje običajnega načina napetostnih udarov. V tem dokumentu so opisani izbor izolacijskih transformatorjev, načela uporabe in povezane informacije. Ta dokument ne obsega komunikacijskih transformatorjev elektroenergetskih vodov.
General Information
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Standards Content (Sample)
SLOVENSKI STANDARD
01-maj-2018
1DGRPHãþD
SIST EN 61643-331:2003
6HVWDYQLGHOL]DQL]NRQDSHWRVWQHQDSUDYH]D]DãþLWRSUHGSUHQDSHWRVWQLPLXGDUL
GHO =DKWHYH]DODVWQRVWLLQSUHVNXVQHPHWRGH]DNRYLQVNRRNVLGQHYDULVWRUMH
Components for low-voltage surge protection - Part 331: Performance requirements and
test methods for metal oxide varistors (MOV)
Ta slovenski standard je istoveten z: EN IEC 61643-331:2018
ICS:
29.120.50 9DURYDONHLQGUXJD Fuses and other overcurrent
PHGWRNRYQD]DãþLWD protection devices
31.040.20 Potenciometri, spremenljivi Potentiometers, variable
upori resistors
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EUROPEAN STANDARD EN IEC 61643-331
NORME EUROPÉENNE
EUROPÄISCHE NORM
March 2018
ICS 31.040 Supersedes EN 61643-331:2003
English Version
Components for low-voltage surge protective devices - Part 331:
Performance requirements and test methods for metal oxide
varistors (MOV)
(IEC 61643-331:2017)
Composants pour protection par parafoudres basse tension Bauelemente für Überspannungsschutzgeräte für
- Partie 331: Exigences de performance et méthodes Niederspannung - Teil 331: Leistungsanforderungen und
d’essai pour les varistances à oxyde métallique (MOV) Prüfverfahren für Metalloxidvaristoren (MOV)
(IEC 61643-331:2017) (IEC 61643-331:2017)
This European Standard was approved by CENELEC on 2018-01-11. CENELEC members are bound to comply with the CEN/CENELEC
Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.
Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC
Management Centre or to any CENELEC member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the
same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,
Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden,
Switzerland, Turkey and the United Kingdom.
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2018 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN IEC 61643-331:2018 E
European foreword
The text of document 37B/160/FDIS future edition 2 of IEC 61643-331, prepared by IEC/SC 37B:
“Specific components for surge arresters and surge protective devices”, of IEC/TC 37: “Surge
arresters”, was submitted to the IEC-CENELEC parallel vote and approved by CENELEC as EN IEC
61643-331:2018.
The following dates are fixed:
(dop) 2018-10-11
• latest date by which the document has to be
implemented at national level by
publication of an identical national
standard or by endorsement
• latest date by which the national (dow) 2021-01-11
standards conflicting with the
document have to be withdrawn
This document supersedes EN 61643-331:2003.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights.
Endorsement notice
The text of the International Standard IEC 61643-331:2017 was approved by CENELEC as a
European Standard without any modification.
In the official version, for Bibliography, the following notes have to be added for the standards indicated:
IEC 60068-2-6:2007 NOTE Harmonized as EN 60068-2-6:2008 (not modified).
IEC 60068-2-14:2009 NOTE Harmonized as EN 6008-2-14:2009 (not modified).
IEC 60068-2-29:1987 NOTE Harmonized as EN 6008-2-29:1993 (not modified).
IEC 60068-2-52:1996 NOTE Harmonized as EN 6008-2-52:1996 (not modified).
IEC 60060-1:2010 NOTE Harmonized as EN 60060-1:2010 (not modified).
IEC 61643-11:2011 NOTE Harmonized as EN 61643-11:2012 (not modified).
IEC 61051-1:2007 NOTE Harmonized as EN 61051-1:2008 (not modified).
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments)
applies.
NOTE 1 Where an International Publication has been modified by common modifications, indicated by (mod), the relevant
EN/HD applies.
NOTE 2 Up-to-date information on the latest versions of the European Standards listed in this annex is available here:
www.cenelec.eu.
Publication Year Title EN/HD Year
IEC 60068-1 2013 Environmental testing -- Part 1: General EN 60068-1 2014
and guidance
IEC 60068-2-20 2008 Environmental testing -- Part 2-20: Tests - EN 60068-2-20 2008
Test T: Test methods for solderability and
resistance to soldering heat of devices with
leads
IEC 60068-2-21 2006 Environmental testing -- Part 2-21: Tests - EN 60068-2-21 2006
Test U: Robustness of terminations and
integral mounting devices
IEC 60068-2-78 2012 Environmental testing -- Part 2-78: Tests - EN 60068-2-78 2013
Test Cab: Damp heat, steady state
IEC 61000-4-2 2008 Electromagnetic compatibility (EMC) -- Part EN 61000-4-2 2009
4-2: Testing and measurement techniques
- Electrostatic discharge immunity test
IEC 61643-11 (mod) 2011 Low-voltage surge protective devices -- EN 61643-11 2012
Part 11: Surge protective devices
connected to low-voltage power systems -
Requirements and test methods
- - + A11 2018
IEC 61643-331 ®
Edition 2.0 2017-12
INTERNATIONAL
STANDARD
colour
inside
Components for low-voltage surge protective devices –
Part 331: Performance requirements and test methods for metal oxide varistors
(MOV)
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 31.040.20 ISBN 978-2-8322-5095-2
– 2 – IEC 61643-331:2017 © IEC 2017
CONTENTS
CONTENTS . 2
FOREWORD . 5
1 Scope . 7
2 Normative references . 7
3 Terms, definitions, symbols and abbreviated terms . 7
3.1 Ratings . 8
3.2 Characteristics . 9
3.3 Symbols . 10
3.4 Abbreviated terms . 11
4 Service conditions . 11
4.1 Operating and storage temperature ranges . 11
4.2 Altitude or atmospheric pressure range . 11
4.3 Relative Humidity . 11
5 Mechanical requirements and materials . 12
5.1 Robustness of terminations . 12
5.2 Solderability . 12
5.3 Marking . 12
6 General . 12
6.1 Failure rates . 12
6.2 Test standard atmospheric conditions . 12
7 Electrical requirements . 12
7.1 Nominal varistor voltage . 12
7.2 Maximum AC (DC) continuous operating voltage. 13
7.3 Standby current I . 13
DC
7.4 Capacitance . 13
7.5 Clamping voltage . 13
7.6 Electrostatic discharge (ESD) (for SMD type MOV only). 15
7.7 Rated impulse energy (W ) . 15
TM
7.8 Nominal discharge current I . 15
n
7.9 Endurance . 15
7.10 Limited current temporary overvoltage . 15
8 Standard design test criteria . 15
8.1 General . 15
8.2 Ratings . 15
8.2.1 Single-impulse maximum current (I ) . 15
TM
8.2.2 Next Impulse . 16
8.2.3 Continuous rated voltage (V ) . 16
M
8.3 Electrical characteristics . 16
8.3.1 Clamping voltage (V ) . 16
C
8.3.2 Standby current (I ) . 17
D
8.3.3 Nominal varistor voltage (V ) . 17
N
8.3.4 Capacitance (C ) . 17
V
8.4 Endurance . 18
8.5 ESD Test Method . 18
9 Nominal discharge current and limited current temporary overvoltage. 18
IEC 61643-331:2017 © IEC 2017 – 3 –
9.1 Thermally protected varistors – Sequence of tests . 18
9.2 Temperature and humidity cycle conditioning . 18
9.3 Nominal discharge current I(n) test description . 19
9.3.1 General . 19
9.3.2 Pass/fail criteria . 21
9.4 Limited current temporary overvoltage test description and procedure for
thermally protected varistors . 21
9.4.1 General . 21
9.4.2 Sample preparation . 21
9.4.3 Test conditions . 21
9.4.4 Pass/fail criteria . 22
9.5 Dielectric testing . 24
9.5.1 Test conditions . 24
9.5.2 Setup from foil to leads . 24
9.5.3 Pass criteria .
...
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