EN 60143-3:2015

SLOVENSKI STANDARD
01-december-2015
1DGRPHãþD
SIST EN 60143-3:2001
Serijski kondenzatorji za elektroenergetske sisteme - 3. del: Notranje varovalke
Series capacitors for power systems - Part 3: Internal fuses
Ta slovenski standard je istoveten z: EN 60143-3:2015
ICS:
29.120.50 9DURYDONHLQGUXJD Fuses and other overcurrent
PHGWRNRYQD]DãþLWD protection devices
31.060.70 0RþQRVWQLNRQGHQ]DWRUML Power capacitors
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN 60143-3
NORME EUROPÉENNE
EUROPÄISCHE NORM
September 2015
ICS 31.060.70 Supersedes EN 60143-3:1998
English Version
Series capacitors for power systems - Part 3: Internal fuses
(IEC 60143-3:2015)
Condensateurs série destines à être installés sur des Reihenkondensatoren für Starkstromanlagen - Teil 3:
réseaux - Partie 3: Fusibles internes Eingebaute Sicherungen
(IEC 60143-3:2015) (IEC 60143-3:2015)
This European Standard was approved by CENELEC on 2015-07-14. 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, 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: Avenue Marnix 17, B-1000 Brussels
© 2015 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN 60143-3:2015 E
European foreword
The text of document 33/577/FDIS, future edition 2 of IEC 60143-3, prepared by IEC/TC 33 "Power
capacitors and their applications" was submitted to the IEC-CENELEC parallel vote and approved by
CENELEC as EN 60143-3:2015.
The following dates are fixed:
(dop) 2016-04-14
• 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) 2018-07-14
standards conflicting with the
document have to be withdrawn
This document supersedes EN 60143-3:1998.

3:1998:
The test procedure has been largely simplified

Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC [and/or CEN] shall not be held responsible for identifying any or all such
patent rights.
Endorsement notice
The text of the International Standard IEC 60143-3:2015 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 60549:2013 NOTE Harmonized as EN 60549:2013.
IEC 60871-4:2014 NOTE Harmonized as EN 60871-4:2014.
IEC 60931-3:1996 NOTE Harmonized as EN 60931-3:1996.

Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated
references, the latest edition of the referenced document (including any amendments) applies.
NOTE 1 When 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 60143-1 2004 Series capacitors for power systems -- Part EN 60143-1 2004
1: General
IEC 60143-2 2012 Series capacitors for power systems -- Part EN 60143-2 2013
2: Protective equipment for series
capacitor banks
IEC 60143-3 ®
Edition 2.0 2015-06
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Series capacitors for power systems –

Part 3: Internal fuses
Condensateurs série destinés à être installés sur des réseaux –

Partie 3: Fusibles internes
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 31.060.70 ISBN 978-2-8322-2715-2

– 2 – IEC 60143-3:2015 © IEC 2015
CONTENTS
FOREWORD . 3
1 Scope . 5
2 Normative references. 5
3 Terms and definitions . 5
4 Performance requirements . 5
4.1 General . 5
4.2 Disconnecting requirements . 6
4.3 Withstand requirements . 6
5 Tests . 7
5.1 Routine tests . 7
5.1.1 General . 7
5.1.2 Discharge test . 7
5.2 Type tests . 7
5.2.1 General . 7
5.2.2 Discharge test on fuses . 7
5.2.3 Disconnecting test on fuses . 8
5.2.4 Voltage test after opening the container . 8
Annex A (normative) Test procedures for the disconnecting test on internal fuses . 9
A.1 General . 9
A.2 Test procedure – Mechanical puncture of the element . 9
Annex B (informative) Guide for coordination of fuse protection . 10
B.1 General . 10
B.2 Protection sequence . 10
Bibliography . 11

IEC 60143-3:2015 © IEC 2015 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
SERIES CAPACITORS FOR POWER SYSTEMS –

Part 3: Internal fuses
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 60143-3 has been prepared by IEC technical committee 33: Power
capacitors and their applications.
This second edition cancels and replaces the first edition published in 1998. This edition
constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
The test procedure has been largely simplified.

– 4 – IEC 60143-3:2015 © IEC 2015
The text of this standard is based on the following documents:
FDIS Report on voting
33/577/FDIS 33/579/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.
A list of all parts in the IEC 60143 series, published under the general title Series capacitors
for power systems, can be found on the IEC website.
The committee has decided that the contents of this publication will remain unchanged until
the stability date indicated on the IEC website 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.
IEC 60143-3:2015 © IEC 2015 – 5 –
SERIES CAPACITORS FOR POWER SYSTEMS –

Part 3: Internal fuses
1 Scope
This part of IEC 60143 applies to internal fuses designed to isolate faulty capacitor elements,
to allow operation of the remaining parts of that capacitor unit and the bank in which the
capacitor unit is connected. Such fuses are not a substitute for a switching device such as a
circuit-breaker, or for external protection of the capacitor bank, or any part thereof.
The object of this part of IEC 60143 is:
– to formulate requirements regarding performance and testing;
– to provide a guide for coordination of fuse and bank protection.
NOTE External fuses for series capacitors are treated in IEC 60143-1:20
...