1、 IEC 60549 Edition 2.0 2013-04 INTERNATIONAL STANDARD NORME INTERNATIONALE High-voltage fuses for the external protection of shunt capacitors Coupe-circuit fusibles haute tension destins la protection externe des condensateurs shunt IEC 60549:2013 THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 20
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15、 International (VEI) en ligne. Service Clients - webstore.iec.ch/csc Si vous dsirez nous donner des commentaires sur cette publication ou si vous avez des questions contactez-nous: csciec.ch. IEC 60549 Edition 2.0 2013-04 INTERNATIONAL STANDARD NORME INTERNATIONALE High-voltage fuses for the externa
16、l protection of shunt capacitors Coupe-circuit fusibles haute tension destins la protection externe des condensateurs shunt INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE P ICS 29.120.50 PRICE CODE CODE PRIX ISBN 978-2-83220-743-7 Registered trademark of the Int
17、ernational Electrotechnical Commission Marque dpose de la Commission Electrotechnique Internationale Warning! Make sure that you obtained this publication from an authorized distributor. Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agr. 2 60549 IEC:2013
18、 CONTENTS FOREWORD . 3 1 Scope . 5 2 Normative references . 5 3 Terms and definitions . 5 4 Performance requirements . 7 4.1 General . 7 4.2 Breaking requirements 7 4.2.1 Rated maximum capacitive breaking current 7 4.2.2 Rated capacitor discharge energy 7 5 Type tests 8 5.1 General . 8 5.2 Test prac
19、tices 8 5.3 Power frequency inductive current tests 8 5.4 Capacitive breaking current tests 9 5.4.1 Description of tests to be made . 9 5.4.2 Test circuits . 9 5.4.3 Arrangement of the equipment . 10 5.4.4 Test procedure 11 5.4.5 Parameters to be used for tests . 12 5.4.6 Test I tfor fuse-links that
20、 exhibit take-over current(s) . 12 5.5 Capacitor Discharge breaking tests . 13 5.5.1 General . 13 5.5.2 Test circuit. 13 5.5.3 Test procedure 14 5.6 Standard conditions of behaviour with respect to breaking tests 14 6 Information to be given to the user . 14 7 Application information . 14 7.1 Operat
21、ing voltages 14 7.2 Rated voltage 15 7.3 Rated current 15 Bibliography 16 Figure 1 Test circuit for test duty A 11 Figure 2 Test circuit for test duty B 11 Table 1 Type tests required . 8 Table 2 Capacitive current breaking tests 12 60549 IEC:2013 3 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ HIGH-V
22、OLTAGE FUSES FOR THE EXTERNAL PROTECTION OF SHUNT CAPACITORS 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
23、-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
24、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 thi
25、s 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 internationa
26、l 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 ef
27、forts 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 Publica
28、tions 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. In
29、dependent 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) N
30、o 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
31、 (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 applicat
32、ion 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 60549 has been prepared by subcommittee
33、 32A: High voltage fuses, of IEC technical committee 32: Fuses. This second edition cancels and replaces the first edition published in 1976. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: a) alig
34、nment of the document with current IEC document structure requirements; b) clarification of certain test requirements. 4 60549 IEC:2013 The text of this standard is based on the following documents: CDV Report on voting 32A/294/CDV 32A/298/RVC Full information on the voting for the approval of this
35、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. The committee has decided that the contents of this publication will remain unchanged until the stability date indicated on the IEC web sit
36、e 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. 60549 IEC:2013 5 HIGH-VOLTAGE FUSES FOR THE EXTERNAL PROTECTION OF SHUNT CAPACITORS 1 Scope This standard applies
37、to external fuses used with high-voltage capacitors according to IEC 60871-1, Shunt capacitors for a.c. power systems having a rated voltage above 1 000 V Part 1: General. IEC 60871-1 is applicable to both capacitor units and capacitor banks intended to be used, particularly, for power-factor correc
38、tion of a.c. power systems, and also to capacitors intended for use in power filter circuits. Fuses according to this standard are intended to clear either faults inside a capacitor unit to permit continued operation of the remaining parts of the bank in which the unit is connected (unit fuses) or f
39、aults on the whole capacitor bank to isolate the bank from the system (line fuses). In this standard the terms “capacitive current” and “inductive current” are used to indicate test currents that have a leading or lagging power factor, respectively, and in which the circuit contains predominantly ca
40、pacitive or inductive components. The word “capacitor“ is used when it is not necessary to lay particular stress upon the different meanings of the word “capacitor unit“ or “capacitor bank“. In some cases, fuses tested only to IEC 60282-1 or IEC 60282-2 may be suitable for use with capacitors if the
41、y are not required to interrupt capacitive currents (e.g. if capacitive currents cannot flow, or if they are acting as a “back-up”, to provide high inductive current breaking, to other devices that will clear capacitive currents). 2 Normative references The following documents, in whole or in part,
42、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. IEC 60282-1:2009, High-voltage fuses Part 1: Current-
43、limiting fuses IEC 60282-2, High-voltage Fuses Part 2: Expulsion Fuses IEC 60871-1, Shunt capacitors for ac power systems having a rated voltage above 1 000 V Part 1: General 3 Terms and definitions For the purposes of this document, the following definitions apply. 3.1 (capacitor) element a device
44、consisting essentially of two electrodes separated by a dielectric SOURCE: IEC 60050-436:1990, 436-01-03 6 60549 IEC:2013 3.2 (capacitor) unit an assembly of one or more capacitor elements in the same container with terminals brought out SOURCE: IEC 60050-436:1990, 436-01-04 3.3 (capacitor) bank a n
45、umber of capacitor units connected so as to act together SOURCE: IEC 60050-436:1990, 436-01-06 3.4 unit fuse fuse intended to be used for the protection of a capacitor unit which forms a part of a capacitor bank 3.5 line fuse fuse intended to be used for the overall protection of a capacitor connect
46、ed to a given point of a system 3.6 rated voltage of a capacitor U rthe r.m.s. value of the alternating voltage for which the capacitor has been designed Note 1 to entry: In the case of capacitors consisting of one or more separate circuits (for example single phase units intended for use in polypha
47、se connection, or polyphase units with separate circuits), U rrefers to the rated voltage of each circuit. Note 2 to entry: For polyphase capacitors with internal electrical connections between phases, and for polyphase capacitor banks, U rrefers to the phase-to-phase voltage. SOURCE: IEC 60050-436:
48、1990, 436-01-15, modified by addition of symbol and notes to entry 3.7 refill unit a set of replacement parts sufficient to restore a fuse-link to its original condition after an operation SOURCE: IEC 60050-441:2007, 441-18-15 3.8 capacitive breaking current current for which the specified condition
49、s of use and behaviour include the opening of the circuit that includes capacitor elements and/or capacitor units in series with the fuse 3.9 rated maximum capacitive breaking current maximum capacitive breaking current that the fuse shall be capable of breaking under the conditions of use and behaviour prescribed in this standard 60549 IEC:2013 7 3.10 rated capacitor discharge energy Joule rating stored energy in a capacitor th
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