BS IEC 62873-3-1-2016 Residual current operated circuit-breakers for household and similar use Particular requirements for RCDs with screwless-type terminals for external copper co.pdf

1、Residual current operated circuit-breakers for household and similar usePart 3-1: Particular requirements for RCDs with screwless-type terminals for external copper conductorsBS IEC 62873-3-1:2016BSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06National forewordThis B

2、ritish Standard is the UK implementation of IEC 62873-3-1:2016.The UK participation in its preparation was entrusted by TechnicalCommittee PEL/23, Electrical accessories, to Subcommittee PEL/23/1, Circuitbreakers and similar equipment for household use.A list of organizations represented on this com

3、mittee 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 correct application. The British Standards Institution 2016.Published by BSI Standards Limited 2016ISBN 978 0 580 83055 6ICS 29.120.

4、50Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 September 2016.Amendments/corrigenda issued since publicationDate Text affectedBRITISH STANDARDBS IEC 62873-3

5、-1:2016IEC 62873-3-1 Edition 1.0 2016-09 INTERNATIONAL STANDARD Residual current operated circuit-breakers for household and similar use Part 3-1: Particular requirements for RCDs with screwless-type terminals for external copper conductors INTERNATIONAL ELECTROTECHNICAL COMMISSION ICS 29.120.50 ISB

6、N 978-2-8322-3613-0 Registered trademark of the International Electrotechnical Commission Warning! Make sure that you obtained this publication from an authorized distributor. BS IEC 62873-3-1:2016 2 IEC 62873-3-1:2016 IEC 2016 CONTENTS FOREWORD . 3 INTRODUCTION . 5 1 Scope 6 2 Normative references.

7、 6 3 Terms and definitions 6 4 Classification . 7 5 Characteristics of RCDs . 7 6 Marking and other product information . 7 7 Standard conditions for operation in service and for installation 7 8 Requirements for construction and operation 7 8.1 General . 7 8.2 Connection or disconnection of conduct

8、ors 8 8.3 Dimensions of connectable conductors 8 8.4 Connectable cross-sectional areas 8 8.5 Insertion and disconnection of conductors . 9 8.6 Design and construction of terminals . 9 8.7 Resistance to ageing . 9 9 Tests . 9 9.1 General . 9 9.2 Test of reliability of screwless terminals . 9 9.2.1 Re

9、liability of screwless system . 9 9.2.2 Test of reliability of connection . 10 9.3 Tests of reliability of terminals for external conductors . 10 9.3.1 Mechanical strength . 10 9.3.2 Cycling test 11 Bibliography . 14 Figure 1 Connecting samples . 11 Figure 2 Examples of screwless-type terminals . 13

10、 Table 1 Connectable conductors 8 Table 2 Cross-sections of copper conductors connectable to screwless-type terminals 9 Table 3 Pull forces . 10 BS IEC 62873-3-1:2016IEC 62873-3-1:2016 IEC 2016 3 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ RESIDUAL CURRENT OPERATED CIRCUIT-BREAKERS FOR HOUSEHOLD AND

11、 SIMILAR USE Part 3-1: Particular requirements for RCDs with screwless- type terminals for external copper conductors FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising all national electrotechnical committees (IEC National Comm

12、ittees). 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 Avail

13、able 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 org

14、anizations 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

15、 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 Na

16、tional 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

17、, 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 i

18、tself 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 tha

19、t 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 nat

20、ure 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 reference

21、d 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. Internatio

22、nal Standard IEC 62873-3-1 has been prepared by subcommittee 23E: Circuit breakers and similar equipment for household use, of IEC technical committee 23: Electrical accessories. The text of this standard is based on the following documents: FDIS Report on voting 23E/964/FDIS 23E/982/RVD Full inform

23、ation 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. BS IEC 62873-3-1:2016 4 IEC 62873-3-1:2016 IEC 2016 A list of all parts of the IEC 62873 serie

24、s published under the general title Residual current operated circuit-breakers for household and similar use 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:/webst

25、ore.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. A bilingual version of this publication may be issued at a later date. BS IEC 62873-3-1:2016IEC 62873-3-1:2016 IEC 2016 5 INTRODUCTION

26、 This document is part of the series described in the outline document IEC 62873-1. BS IEC 62873-3-1:2016 6 IEC 62873-3-1:2016 IEC 2016 RESIDUAL CURRENT OPERATED CIRCUIT-BREAKERS FOR HOUSEHOLD AND SIMILAR USE Part 3-1: Particular requirements for RCDs with screwless- type terminals for external copp

27、er conductors 1 Scope This part of IEC 62873 applies to RCDs equipped with screwless terminals, for current not exceeding 20 A primarily suitable for connecting unprepared (see 3.5) copper conductors of cross-section up to 4 mm2. This part of IEC 62873 cannot be used alone but it is intended to be a

28、pplied together with an RCD product standard (IEC 61008-1 or IEC 61009-1) if an RCD is equipped with screwless terminals. NOTE In AT, CZ, DK, NL, NO, PO, PT and CH, the upper limit of current for use of screwless terminals is 16 A. In this part of IEC 62873, screwless terminals are referred to as te

29、rminals and copper conductors are referred to as conductors. 2 Normative references 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 l

30、atest edition of the referenced document (including any amendments) applies. IEC 61008-1, Residual current operated circuit-breakers without integral overcurrent protection for household and similar uses (RCCBs) Part 1: General rules IEC 61009-1, Residual current operated circuit-breakers with integ

31、ral overcurrent protection for household and similar uses (RCBOs) Part 1: General rules IEC 62873-2, Residual current operated circuit-breakers for household and similar use Part 2: Residual current devices (RCDs) Vocabulary 3 Terms and definitions For the purposes of this document, the terms and de

32、finitions given in IEC 62873-2 and the following apply. 3.1 clamping units parts of the terminal necessary for mechanical clamping and the electrical connection of the conductors including the parts which are necessary to ensure correct contact pressure 3.2 universal terminal terminal for the connec

33、tion and disconnection of all types of conductors (rigid and flexible) Note 1 to entry: In the following countries, only universal screwless-type terminals are accepted: AT, BE, CN, DK, DE, ES, FR, IT, PT, SE and CH. BS IEC 62873-3-1:2016IEC 62873-3-1:2016 IEC 2016 7 3.3 non-universal terminal termi

34、nal for the connection and disconnection of a certain kind of conductor only (e.g. rigid-solid conductors only or rigid-solid or stranded conductors only) 3.4 push-wire terminal non-universal terminal in which the connection is made by pushing in rigid (solid or stranded) conductors 3.5 unprepared c

35、onductor conductor which has been cut and the insulation of which has been removed for insertion into a terminal Note 1 to entry: A conductor the shape of which is arranged for introduction into a terminal or the strands of which are twisted to consolidate the end is considered as an unprepared cond

36、uctor. SOURCE: IEC 60050-442:1998, 442-01-26 4 Classification Clause 4 of the RCD product standard applies. 5 Characteristics of RCDs Clause 5 of the RCD product standard applies. 6 Marking and other product information In addition to Clause 6 of the RCD product standard, the following requirements

37、apply: Non-universal terminals: terminals declared for flexible conductors shall be marked by the letter “f“. An appropriate marking indicating the length of insulation to be removed before insertion of the conductor into the terminal shall be shown on the RCD. The manufacturer shall also provide in

38、formation, in his literature, on the maximum number of conductors which may be clamped. 7 Standard conditions for operation in service and for installation Clause 7 of the RCD product standard applies. 8 Requirements for construction and operation 8.1 General Clause 8 of the RCD product standard app

39、lies, with the following exceptions: In 8.1.5, only 8.1.5.1, 8.1.5.2, 8.1.5.3, 8.1.5.6 and 8.1.5.7 apply. Compliance is checked by inspection and by the tests of 9.2 and 9.3 of this standard. BS IEC 62873-3-1:2016 8 IEC 62873-3-1:2016 IEC 2016 In addition, the following requirements apply. 8.2 Conne

40、ction or disconnection of conductors The connection or disconnection of conductors shall be made: by the use of a general purpose tool or by a convenient device integral with the terminal to open it and to assist the insertion or the withdrawal of the conductors (e.g. for universal terminals); or, f

41、or rigid conductors: by simple insertion. For the disconnection of the conductors, an operation other than a pull on the conductor shall be necessary (e.g. for push-wire terminals). Universal terminals shall accept rigid (solid or stranded) and flexible unprepared conductors. Non-universal terminals

42、 shall accept the types of conductors declared by the manufacturer. Compliance is checked by inspection and by the tests of 9.2 and 9.3 of this standard. 8.3 Dimensions of connectable conductors The dimensions of connectable conductors are given in Table 1. The ability to connect these conductors sh

43、all be checked by inspection and by the tests of 9.2 and 9.3 of this standard. Table 1 Connectable conductors Connectable conductors and their theoretical diameter Metric AWG Rigid Flexible Rigid Flexible Solid Stranded SolidaClass B strandedaClasses I, K, M, strandedbmm2 mm mm mm2 mm gauge mm mm ga

44、uge mm 1,0 1,2 1,4 1,0 1,5 18 1,02 1,16 18 1,28 1,5 1,5 1,7 1,5 1,8 16 1,29 1,46 16 1,60 2,5 1,9 2,2 2,5 2,3 14 1,63 1,84 14 2,08 4,0 2,4 2,7 4,0 2,9 12 2,05 2,32 12 2,70 NOTE Diameters of the largest rigid and flexible conductors are based on IEC 60228, and, for AWG conductors, on ASTM B 172-01a. a

45、Nominal diameter + 5 %. bLargest diameter + 5 % for any of the three classes I, K and M. 8.4 Connectable cross-sectional areas The nominal cross-sections to be clamped are defined in Table 2. BS IEC 62873-3-1:2016IEC 62873-3-1:2016 IEC 2016 9 Table 2 Cross-sections of copper conductors connectable t

46、o screwless-type terminals Rated current Nominal cross-sections to be clamped A mm2Up to and including 13 1 up to and including 2,5 Above 13 up to and including 20 1,5 up to and including 4 Compliance is checked by inspection and by the tests of 9.2 and 9.3 of this standard. 8.5 Insertion and discon

47、nection of conductors The insertion and disconnection of the conductors shall be made in accordance with the manufacturers instructions. Compliance is checked by inspection. 8.6 Design and construction of terminals Terminals shall be so designed and constructed that: each conductor is clamped indivi

48、dually; during the operation of connection or disconnection the conductors can be connected or disconnected either at the same time or separately; inadequate insertion of the conductor is avoided. It shall be possible to clamp securely any number of conductors up to the maximum provided for. Complia

49、nce is checked by inspection and by the tests of 9.2 and 9.3 of this standard. NOTE Examples are given in Figure 2. 8.7 Resistance to ageing The terminals shall be resistant to ageing. Compliance is checked by the test of 9.3.2. 9 Tests 9.1 General Clause 9 of the RCD product standard applies, with the exception of 9.4 and 9.5. 9.2 Test of reliability of screwless terminals 9.2.1 Reliability of screwless system The test is carried out on three terminals of po