1、BSI Standards PublicationHigh-voltage fuses for the external protection of shunt capacitorsBS EN 60549:2013National forewordThis British Standard is the UK implementation of EN 60549:2013. It is identical to IEC 60549:2013. It supersedes BS 5564:1978, which will be withdrawn on 28 May 2016.The UK pa
2、rticipation in its preparation was entrusted to TechnicalCommittee PEL/32, Fuses.A list of organizations represented on this committee can be obtained onrequest to its secretary.This publication does not purport to include all the necessary provisions ofa contract. Users are responsible for its corr
3、ect application. The British Standards Institution 2013.Published by BSI Standards Limited 2013ISBN 978 0 580 70235 8ICS 29.120.50 Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Strate
4、gy Committee on 31 July 2013.Amendments/corrigenda issued since publicationDate Text affectedBRITISH STANDARDBS EN 60549:2013EUROPEAN STANDARD EN 60549 NORME EUROPENNE EUROPISCHE NORM June 2013 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotech
5、nique Europisches Komitee fr Elektrotechnische Normung Management Centre: Avenue Marnix 17, B - 1000 Brussels 2013 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 60549:2013 E ICS 29.120.50 English version High-voltage fuses for t
6、he external protection of shunt capacitors (IEC 60549:2013) Coupe-circuit fusibles haute tension destins la protection externe des condensateurs shunt (CEI 60549:2013) Hochspannungssicherungen fr den externen Schutz von Parallelkondensatoren (IEC 60549:2013) This European Standard was approved by CE
7、NELEC on 2013-05-28. 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 stand
8、ards 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 languag
9、e 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,
10、 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. BS EN 60549:2013EN 60549:2013 - 2 - Foreword The text of document 32A/294/CDV,
11、future edition 2 of IEC 60549, prepared by SC 32A, “High voltage fuses“, of IEC/TC 32, “Fuses“ was submitted to the IEC-CENELEC parallel vote and approved by CENELEC as EN 60549:2013. The following dates are fixed: latest date by which the document has to be implemented at national level by publicat
12、ion of an identical national standard or by endorsement (dop) 2014-02-28 latest date by which the national standards conflicting with the document have to be withdrawn (dow) 2016-05-28 Attention is drawn to the possibility that some of the elements of this document may be the subject of patent right
13、s. 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 60549:2013 was approved by CENELEC as a European Standard without any modification. BS EN 60549:2013- 3 - EN 60549:2013 Annex ZA (normative
14、) 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 r
15、eferences, the latest edition of the referenced document (including any amendments) applies. NOTE When an international publication has been modified by common modifications, indicated by (mod), the relevant EN/HD applies. Publication Year Title EN/HD Year IEC 60282-1 2009 High-voltage fuses - Part
16、1: Current-limiting fuses EN 60282-1 2009 IEC 60282-2 - High-voltage fuses - Part 2: Expulsion fuses - - IEC 60871-1 - Shunt capacitors for a.c. power systems having a rated voltage above 1 000 V - Part 1: General EN 60871-1 - BS EN 60549:2013 2 60549 IEC:2013 CONTENTS 1 Scope . 5 2 Normative refere
17、nces . 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 practices 8 5.3 Power frequency inductive current tests 8
18、 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 Itfor fuse-links that exhibit take-over current(s) . 12 5.5 Capacitor Disch
19、arge 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 Operating voltages 14 7.2 Rated voltage 15 7.3 Rated current
20、 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 BS EN 60549:201360549 IEC:2013 5 HIGH-VOLTAGE FUSES FOR THE EXTERNAL PROTECTION OF SHUNT CAPACITORS 1 Scope This standard
21、 applies 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-fact
22、or correction 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 fu
23、ses) or faults 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 predomi
24、nantly capacitive 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 capacito
25、rs if they 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
26、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. IEC 60282-1:2009, High-voltage fuses Part 1:
27、 Current-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
28、a device consisting essentially of two electrodes separated by a dielectric SOURCE: IEC 60050-436:1990, 436-01-03 BS EN 60549:2013 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, 436-01-0
29、4 3.3 (capacitor) bank a number 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 protect
30、ion of a capacitor connected to a given point of a system 3.6 rated voltage of a capacitor Urthe 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 in
31、tended for use in polyphase connection, or polyphase units with separate circuits), Urrefers 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, Urrefers to the phase-to-phase voltage.
32、 SOURCE: IEC 60050-436:1990, 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
33、the specified conditions 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 cond
34、itions of use and behaviour prescribed in this standard BS EN 60549:201360549 IEC:2013 7 3.10 rated capacitor discharge energy Joule rating stored energy in a capacitor that a fuse has been shown to be capable of withstanding during a capacitor discharge breaking test 4 Performance requirements 4.1
35、General These fuses are not a substitute for a mechanical switching device, but when forming a part of a mechanical switching device such as a fused switch or a fused disconnector, they shall comply with this standard. When fuses are used for the external protection of a capacitor unit or a capacito
36、r bank (line fuses), their voltages and breaking ratings shall be adequate for the system. Fuses according to this standard shall comply with the requirements of IEC 60282-1 or IEC 60282-2, except those which are specifically excluded in this standard. The fuse is connected in series with the unit(s
37、) that the fuse is intended to isolate if the unit(s) become(s) faulty. The range in currents and voltages for the fuse is therefore dependent on the characteristics of the capacitor and the bank in which the fuse is connected as well as the parameters of the supply circuit. The operation of an exte
38、rnal fuse is, in general, determined by the following two factors: a) the power-frequency fault current resulting from either a partial or complete capacitor failure; b) the discharge energy from any units in parallel with the fault. However, this standard gives a method of separate checking of thes
39、e factors. These requirements are valid for capacitors switched by a switching device with a very low probability of restrike during interruption. If this is not the case, other requirements are to be agreed upon. As used in this standard, Uris the rated voltage of the capacitor unit and Urfis the r
40、ated voltage of the capacitor fuse. 4.2 Breaking requirements 4.2.1 Rated maximum capacitive breaking current The preferred rated maximum capacitive breaking currents for capacitor fuses are 1 kA r.m.s., 2,5 kA r.m.s., 3,15 kA r.m.s., 4 kA r.m.s., and 5 kA r.m.s Other values shall be the subject of
41、an agreement between manufacturer and user. 4.2.2 Rated capacitor discharge energy A rated capacitor discharge energy (joule rating) is assigned to a fuse based on the energy stored in a capacitor test bank prior to the time it is discharged through the fuse in the capacitor discharge breaking tests
42、 (5.5). Values should be selected from R10 series with a minimum of 10 kJ. The preferred value for current-limiting fuses is 40 kJ. To assign an “unlimited” rated capacitor discharge energy see 5.5.2. BS EN 60549:2013 8 60549 IEC:2013 The preferred frequency for the capacitor discharge breaking test
43、s of 5.5 is: f = 0,8 UrfWhere f is in hertz and Urfis the rated voltage of the fuse, in volts. 5 Type tests 5.1 General To comply with this standard, fuses shall be subjected to the tests specified in Table 1. For fuses belonging to a homogeneous series as defined in IEC 60282-1 and IEC 60282-2, it
44、is allowed that tests made on a reduced number of current ratings shall be valid for the other current ratings. Detailed information is given in 5.4.1 and 5.5.1. Table 1 Type tests required Tests Line fuses Unit fuses Where inductive currents are likely aWhere inductive currents are not likely bPowe
45、r-frequency Inductive currents (5.3) X X Power-frequency Capacitive currents c(5.4) X X X Capacitive-discharge (5.5) dX X a Examples of such applications are unit fuses in delta-connected banks without units in series; unit fuses in star-connected banks without units in series and with earthed neutr
46、al. unit fuses without capacitor units in series, used on single phase circuits bExamples of such applications are: unit fuses in star-connected banks with unearthed neutral; banks where capacitor units are used in series. c These tests are not required for fuses where capacitive limited currents ar
47、e not likely to flow. Examples of such cases are capacitors having only a single internal group of elements, connected in delta or grounded star without capacitor units in series. dUnusual applications, such as back-to-back banks on the same pole with each bank having its own line fuse could require
48、 the fuse to be capable of interrupting capacitive discharge currents. Since the size of these banks would generally be small, most line fuses could satisfactorily handle the discharge currents. Consult the fuse manufacturer for these types of applications. 5.2 Test practices The fuse shall be new,
49、clean and in good condition. The fuse-link shall be tested in a fuse-base or directly mounted as specified by the manufacturer of the fuse-link. In making tests of a test duty within a series of renewable fuse-links, only the fuse-elements, refill units and parts normally replaceable shall be replaced. A new fuse-carrier shall be used for tests of the other test duty. 5.3 Power frequency inductive current tests These tests shall comprise the following: Test duties 1 and 2 according to IEC 602
