IEC 61071:2017
(Main)Capacitors for power electronics
Capacitors for power electronics
IEC 61071:2017 applies to capacitors for power electronics applications. The operating frequency of the systems in which these capacitors are used is usually up to 15 kHz, while the pulse frequencies may be up to 5 to 10 times the operating frequency. The document distinguishes between AC and DC capacitors which are considered as components when mounted in enclosures. This document covers an extremely wide range of capacitor technologies for numerous applications, e.g. overvoltage protection, DC and filtering, switching circuits, energy storage, auxiliary inverters, etc. This second edition cancels and replaces the first edition published in 2007. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
- Introduction of new terms and definitions;
- clarifications for surge discharge test;
- indications for measuring procedure during thermal stability test;
- clarifications for self-healing test;
- clarifications for endurance test;
- clarifications for destruction test;
- update of normative references;
- general editorial review.
Condensateurs pour électronique de puissance
IEC 61071:2017 s’applique aux condensateurs pour les applications de l’électronique de puissance. La fréquence de fonctionnement des systèmes utilisant ces condensateurs atteint généralement 15 kHz, mais les fréquences d'impulsions peuvent atteindre 5 à 10 fois la fréquence de fonctionnement. Une distinction est faite dans le présent document entre les condensateurs à courant alternatif et les condensateurs à courant continu qui sont considérés comme des composants lorsqu’ils sont montés dans un boîtier fermé. Le présent document couvre une très grande variété de technologies de condensateurs pour répondre à de nombreuses applications, par exemple la protection contre les surtensions, le filtrage à courant continu et à courant alternatif, les circuits de commutation, le stockage d’énergie à courant continu, les inverseurs auxiliaires, etc Cette deuxième édition annule et remplace la première édition publiée en 2007. Cette édition constitue une révision technique. Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente:
- introduction de nouveaux termes et définitions;
- clarifications des essais de décharge;
- indications sur la procédure de mesure pendant l'essai de stabilité thermique;
- clarifications des essais d'autorégénération;
- clarifications des essais d'endurance;
- clarifications des essais de destruction;
- mise à jour des références normatives;
- révision éditoriale générale
Mots clés: applications de l’électronique de puissance
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IEC 61071 ®
Edition 2.0 2017-08
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
Capacitors for power electronics
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form
or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from
either IEC or IEC's member National Committee in the country of the requester. If you have any questions about IEC
copyright or have an enquiry about obtaining additional rights to this publication, please contact the address below or
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3, rue de Varembé Fax: +41 22 919 03 00
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Switzerland www.iec.ch
About the IEC
The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes
International Standards for all electrical, electronic and related technologies.
About IEC publications
The technical content of IEC publications is kept under constant review by the IEC. Please make sure that you have the
latest edition, a corrigenda or an amendment might have been published.
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and withdrawn publications. collected from earlier publications of IEC TC 37, 77, 86 and
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IEC 61071 ®
Edition 2.0 2017-08
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
Capacitors for power electronics
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 31.060.70 ISBN 978-2-8322-4760-0
– 2 – IEC 61071:2017 RLV © IEC 2017
CONTENTS
FOREWORD . 5
1 Scope . 7
2 Normative references . 7
3 Terms and definitions . 8
4 Service conditions . 14
4.1 Normal service conditions . 14
4.1.1 General . 14
4.1.2 Altitude . 14
4.1.3 Operating temperature (θ ) . 14
max
4.1.4 Operating temperature with forced cooling . 14
4.2 Unusual service conditions . 14
5 Quality requirements and tests . 15
5.1 Test requirements . 15
5.1.1 General . 15
5.1.2 Test conditions . 15
5.2 Classification of tests . 15
5.2.1 General . 15
5.2.2 Routine tests . 15
5.2.3 Type tests . 16
5.3 Capacitance and tan δ measurements (routine test) . 16
5.3.1 Measuring procedure . 16
5.3.2 Capacitance tolerances . 17
5.3.3 Loss requirements (tan δ) . 17
5.4 Measurement of the tangent of the loss angle (tan δ) of a capacitor (type test) . 17
5.4.1 Measurements . 17
5.4.2 Loss requirements . 17
5.5 Voltage test between terminals . 17
5.5.1 General . 17
5.5.2 Routine test . 18
5.5.3 Type test . 18
5.6 AC voltage test between terminals and case . 18
5.6.1 Routine test . 18
5.6.2 Type test . 19
5.7 Test of internal discharge device . 19
5.8 Sealing test . 19
5.9 Surge discharge test . 19
5.10 Thermal stability test . 20
5.10.1 General . 20
5.10.2 Measuring procedure . 20
5.11 Self-healing test . 21
5.12 Resonance frequency measurement . 21
5.13 Environmental testing . 22
5.13.1 Change of temperature . 22
5.13.2 Damp heat, steady state . 22
5.14 Mechanical testing . 22
5.14.1 Mechanical tests of terminals . 22
5.14.2 External inspection . 22
5.14.3 Vibration and shocks . 22
5.15 Endurance test . 23
5.15.1 General . 23
5.15.2 Conditioning of the units before the test . 23
5.15.3 Initial capacitance and loss factor measurements . 23
5.15.4 Endurance test . 23
5.15.5 Final capacitance and tan δ measurement . 24
5.15.6 Acceptance criteria . 24
5.16 Destruction test . 25
5.16.1 General . 25
5.16.2 Test sequence for a.c. capacitors . 25
5.16.3 Test sequence for d.c. capacitors . 27
5.17 Disconnecting test on internal fuses . 29
5.17.1 General . 29
5.17.2 Disconnecting requirements . 30
5.17.3 Withstand requirements . 30
5.17.4 Test procedure . 30
5.17.5 Capacitance measurement . 31
5.17.6 Visual checking . 31
5.17.7 Voltage test . 31
6 Overloads . 32
6.1 Maximum permissible voltages . 32
7 Safety requirements . 32
7.1 Discharge device . 32
7.2 Case connections . 32
7.3 Protection of the environment . 33
7.4 Other safety requirements . 33
8 Markings. 33
8.1 Marking of the units– Rating plate . 33
8.1.1 Rating plate . 33
9 Guidance on installation and operation . 34
9.1 General . 34
9.2 Choice of rated voltage . 34
9.3 Operating temperature . 35
9.3.1 General . 35
9.3.2 Installation . 35
9.3.3 Unusual cooling conditions . 35
9.4 Special service conditions . 35
9.5 Overvoltages . 36
9.6 Overcurrents . 36
9.7 Switching and protective devices . 36
9.8 Choice of creepage distance and clearance . 37
9.8.1 Creepage distance . 37
9.8.2 Air clearances. 37
– 4 – IEC 61071:2017 RLV © IEC 2017
9.9 Connections . 37
9.10 Parallel connections of capacitors .
...
IEC 61071 ®
Edition 2.0 2017-08
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Capacitors for power electronics
Condensateurs pour électronique de puissance
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form
or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from
either IEC or IEC's member National Committee in the country of the requester. If you have any questions about IEC
copyright or have an enquiry about obtaining additional rights to this publication, please contact the address below or
your local IEC member National Committee for further information.
Droits de reproduction réservés. Sauf indication contraire, aucune partie de cette publication ne peut être reproduite
ni utilisée sous quelque forme que ce soit et par aucun procédé, électronique ou mécanique, y compris la photocopie
et les microfilms, sans l'accord écrit de l'IEC ou du Comité national de l'IEC du pays du demandeur. Si vous avez des
questions sur le copyright de l'IEC ou si vous désirez obtenir des droits supplémentaires sur cette publication, utilisez
les coordonnées ci-après ou contactez le Comité national de l'IEC de votre pays de résidence.
IEC Central Office Tel.: +41 22 919 02 11
3, rue de Varembé Fax: +41 22 919 03 00
CH-1211 Geneva 20 info@iec.ch
Switzerland www.iec.ch
About the IEC
The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes
International Standards for all electrical, electronic and related technologies.
About IEC publications
The technical content of IEC publications is kept under constant review by the IEC. Please make sure that you have the
latest edition, a corrigenda or an amendment might have been published.
IEC Catalogue - webstore.iec.ch/catalogue Electropedia - www.electropedia.org
The stand-alone application for consulting the entire The world's leading online dictionary of electronic and
bibliographical information on IEC International Standards, electrical terms containing 20 000 terms and definitions in
Technical Specifications, Technical Reports and other English and French, with equivalent terms in 16 additional
documents. Available for PC, Mac OS, Android Tablets and languages. Also known as the International Electrotechnical
iPad. Vocabulary (IEV) online.
IEC publications search - www.iec.ch/searchpub IEC Glossary - std.iec.ch/glossary
The advanced search enables to find IEC publications by a 65 000 electrotechnical terminology entries in English and
variety of criteria (reference number, text, technical French extracted from the Terms and Definitions clause of
committee,…). It also gives information on projects, replaced IEC publications issued since 2002. Some entries have been
and withdrawn publications. collected from earlier publications of IEC TC 37, 77, 86 and
CISPR.
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IEC 61071 ®
Edition 2.0 2017-08
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Capacitors for power electronics
Condensateurs pour électronique de puissance
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 31.060.70 ISBN 978-2-8322-4647-4
– 2 – IEC 61071:2017 © IEC 2017
CONTENTS
FOREWORD . 5
1 Scope . 7
2 Normative references . 7
3 Terms and definitions . 8
4 Service conditions . 14
4.1 Normal service conditions . 14
4.1.1 General . 14
4.1.2 Altitude . 14
4.1.3 Operating temperature (θ ) . 14
max
4.1.4 Operating temperature with forced cooling . 14
4.2 Unusual service conditions . 14
5 Quality requirements and tests . 15
5.1 Test requirements . 15
5.1.1 General . 15
5.1.2 Test conditions . 15
5.2 Classification of tests . 15
5.2.1 General . 15
5.2.2 Routine tests . 15
5.2.3 Type tests . 16
5.3 Capacitance and tan δ measurements (routine test) . 16
5.3.1 Measuring procedure . 16
5.3.2 Capacitance tolerances . 17
5.3.3 Loss requirements (tan δ) . 17
5.4 Measurement of the tangent of the loss angle (tan δ) of a capacitor (type test)
............................................................................................................................. 17
5.4.1 Measurements . 17
5.4.2 Loss requirements . 17
5.5 Voltage test between terminals . 17
5.5.1 General . 17
5.5.2 Routine test . 17
5.5.3 Type test . 18
5.6 AC voltage test between terminals and case . 18
5.6.1 Routine test . 18
5.6.2 Type test . 18
5.7 Test of internal discharge device . 19
5.8 Sealing test . 19
5.9 Surge discharge test . 19
5.10 Thermal stability test . 20
5.10.1 General . 20
5.10.2 Measuring procedure . 20
5.11 Self-healing test . 21
5.12 Resonance frequency measurement . 21
5.13 Environmental testing . 21
5.13.1 Change of temperature . 21
5.13.2 Damp heat, steady state . 22
5.14 Mechanical testing . 22
5.14.1 Mechanical tests of terminals . 22
5.14.2 External inspection . 22
5.14.3 Vibration and shocks . 22
5.15 Endurance test . 23
5.15.1 General . 23
5.15.2 Conditioning of the units before the test . 23
5.15.3 Initial capacitance and loss factor measurements . 23
5.15.4 Endurance test . 23
5.15.5 Final capacitance and tan δ measurement . 24
5.15.6 Acceptance criteria . 24
5.16 Destruction test . 24
5.16.1 General . 24
5.16.2 Test sequence for a.c. capacitors . 25
5.16.3 Test sequence for d.c. capacitors . 27
5.17 Disconnecting test on internal fuses . 29
5.17.1 General . 29
5.17.2 Disconnecting requirements . 30
5.17.3 Withstand requirements . 30
5.17.4 Test procedure . 30
5.17.5 Capacitance measurement . 31
5.17.6 Visual checking . 31
5.17.7 Voltage test . 31
6 Overloads . 32
6.1 Maximum permissible voltages .
...
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