1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI British StandardsWB9423_BSI_StandardColCov_noK_AW:BSI FRONT COVERS 5/9/08 12:55 Page 1Low-voltage switchgear andcontrolgear Part 7-1: Ancillary equipment Terminal blocks for copper conductorsBS EN 60
2、947-7-1:2009National forewordThis British Standard is the UK implementation of EN 60947-7-1:2009. It isidentical to IEC 60947-7-1:2009. It supersedes BS EN 60947-7-1:2002 whichis withdrawn.The UK participation in its preparation was entrusted by Technical CommitteePEL/17, Switchgear, controlgear, an
3、d HV-LV co-ordination, to SubcommitteePEL/17/2, Low voltage switchgear and controlgear.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 of acontract. Users are responsible for it
4、s correct application. BSI 2009ISBN 978 0 580 68510 1ICS 29.130.20Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of the StandardsPolicy and Strategy Committee on 31 July 2009Amendments issued since publicationAm
5、d. No. Date Text affectedBRITISH STANDARDBS EN 60947-7-1:2009EUROPEAN STANDARD EN 60947-7-1 NORME EUROPENNE EUROPISCHE NORM June 2009 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Centr
6、al Secretariat: Avenue Marnix 17, B - 1000 Brussels 2009 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 60947-7-1:2009 E ICS 29.130.20 Supersedes EN 60947-7-1:2002English version Low-voltage switchgear and controlgear - Part 7-1:
7、 Ancillary equipment - Terminal blocks for copper conductors (IEC 60947-7-1:2009) Appareillage basse tension - Partie 7-1: Matriels accessoires - Blocs de jonction pour conducteurs en cuivre (CEI 60947-7-1:2009) Niederspannungsschaltgerte - Teil 7-1: Hilfseinrichtungen - Reihenklemmen fr Kupferleite
8、r (IEC 60947-7-1:2009) This European Standard was approved by CENELEC on 2009-06-01. 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 lis
9、ts and bibliographical references concerning such national standards may be obtained on application to the Central Secretariat 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 r
10、esponsibility of a CENELEC member into its own language and notified to the Central Secretariat has the same status as the official versions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Cyprus, the Czech Republic, Denmark, Estonia, Finland, France, Ger
11、many, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. BS EN 60947-7-1:2009EN 60947-7-1:2009 2 Foreword The text of document 17B/1654/FDIS, future
12、 edition 3 of IEC 60947-7-1, prepared by SC 17B, Low-voltage switchgear and controlgear, of IEC TC 17, Switchgear and controlgear, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as EN 60947-7-1 on 2009-06-01. This European Standard supersedes EN 60947-7-1:2002. The main t
13、echnical modifications of EN 60947-7-1:2009 since EN 60947-7-1:2002 are listed below: added in the scope that EN 60947-7-1:2009 may be used as a guide for special types of terminal blocks, for example with diodes or varistors or similar component holders; the conventional free air thermal current ad
14、ded in 5.2 in the list of information to be stated by the manufacturer; update of 7.1.4 that the colour combination green-yellow is not allowed for terminal blocks; the consequences in case of failed single tests and failed tests within test sequences specified in 8.2; requirements regarding clearan
15、ces and creepage distances replaced by reference to Annex H of EN 60947-1, Annex A deleted; requirements for tightening torques for the tests improved and referenced to Table 4 of EN 60947-1, Annex C deleted; in 8.3.3.3 changed reference for pull-out force to EN 60947-1; the wording of the test of t
16、he voltage drop improved in 8.4.4; the wording of the short-time withstand current test improved in 8.4.6; Annex D with additional requirements for test disconnect terminal blocks added. The scope has been modified accordingly. This standard shall be read in conjunction with EN 60947-1. The provisio
17、ns of the general rules dealt with in EN 60947-1 are applicable to this standard, where specifically called for. Clauses and subclauses, tables, figures and annexes thus applicable are identified by reference to EN 60947-1, e.g. 1.2 of EN 60947-1, Table 4 of EN 60947-1 or Annex A of EN 60947-1. The
18、following dates were fixed: latest date by which the EN has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2010-03-01 latest date by which the national standards conflicting with the EN have to be withdrawn (dow) 2012-06-01 Annex ZA has b
19、een added by CENELEC. _ BS EN 60947-7-1:2009 3 EN 60947-7-1:2009 Endorsement notice The text of the International Standard IEC 60947-7-1:2009 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 t
20、he standards indicated: IEC 60228 NOTE Harmonized as EN 60228:2005 (not modified). IEC 60715 NOTE Harmonized as EN 60715:2001 (not modified). _ BS EN 60947-7-1:2009EN 60947-7-1:2009 4 Annex ZA (normative) Normative references to international publications with their corresponding European publicatio
21、ns The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. NOTE When an international publication has bee
22、n modified by common modifications, indicated by (mod), the relevant EN/HD applies. Publication Year Title EN/HD Year IEC 60695-11-5 2004 Fire hazard testing - Part 11-5: Test flames - Needle-flame test method - Apparatus, confirmatory test arrangement and guidance EN 60695-11-5 2005 IEC 60947-1 200
23、7 Low-voltage switchgear and controlgear - Part 1: General rules EN 60947-1 2007 ISO 4046-4 2002 Paper, board, pulps and related terms - Vocabulary - Part 4: Paper and board grades and converted products - - BS EN 60947-7-1:2009 2 60947-7-1 IEC:2009 CONTENTS 1 General 6 1.1 Scope6 1.2 Normative refe
24、rences 6 2 Definitions 7 3 Classification7 4 Characteristics .7 4.1 Summary of characteristics .7 4.2 Type of terminal block .7 4.3 Rated and limiting values 8 4.3.1 Rated voltages 8 4.3.2 Short-time withstand current8 4.3.3 Standard cross-sections 8 4.3.4 Rated cross-section.8 4.3.5 Rated connectin
25、g capacity.9 5 Product information 9 5.1 Marking .9 5.2 Additional information9 6 Normal service, mounting and transport conditions.10 7 Constructional and performance requirements10 7.1 Constructional requirements10 7.1.1 Clamping units.10 7.1.2 Mounting .10 7.1.3 Clearances and creepage distances
26、10 7.1.4 Terminal identification and marking .10 7.1.5 Resistance to abnormal heat and fire.11 7.1.6 Rated cross-section and rated connecting capacity .11 7.2 Performance requirements 11 7.2.1 Temperature-rise.11 7.2.2 Dielectric properties.11 7.2.3 Short-time withstand current11 7.2.4 Voltage drop1
27、2 7.2.5 Electrical performance after ageing (for screwless-type terminal blocks only) .12 7.3 Electromagnetic compatibility (EMC) .12 8 Tests 12 8.1 Kinds of test 12 8.2 General .12 8.3 Verification of mechanical characteristics 13 8.3.1 General .13 8.3.2 Attachment of the terminal block on its supp
28、ort13 8.3.3 Mechanical properties of clamping units 14 8.4 Verification of electrical characteristics15 8.4.1 General .15 8.4.2 Verification of clearances and creepage distances 16 8.4.3 Dielectric tests.16 BS EN 60947-7-1:200960947-7-1 IEC:2009 3 8.4.4 Verification of the voltage drop 16 8.4.5 Temp
29、erature-rise test 18 8.4.6 Short-time withstand current test .19 8.4.7 Ageing test (for screwless-type terminal blocks only).19 8.5 Verification of thermal characteristics 20 8.6 Verification of EMC characteristics 22 8.6.1 Immunity .22 8.6.2 Emission .22 Annex A vacant.23 Annex B (informative) Item
30、s subject to agreement between manufacturer and user .24 Annex C vacant 25 Annex D (normative) Additional requirements for test disconnect terminal blocks.26 Bibliography34 Figure 1 Arrangement for test according to 8.3.2 .13 Figure 2 Arrangement for tests according to 8.4.5 and 8.4.7, and for the v
31、erification of voltage drop18 Figure 3 Arrangement for test according to 8.5 21 Figure 4 Point of test flame contact (view from the layer placed below the terminal block) .22 Figure D.1 Test requirements according to D.8.4.4 for verification of the voltage drop .30 Table 1 Standard cross-sections of
32、 round copper conductors.8 Table 2 Relationship between rated cross-section and rated connecting capacity of terminal blocks .9 Table 3 Attachment test parameters.14 Table 4 Values of test current for temperature-rise test, ageing test and voltage drop verification for metric wire sizes17 Table 5 Va
33、lues of test current for temperature-rise test, ageing test and voltage drop verification for AWG or kcmil wire sizes 18 Table D.1 Operating cycles28 Table D.2 Values of test current for temperature-rise test, ageing test and voltage drop verification for metric wire sizes 30 Table D.3 Values of tes
34、t current for temperature-rise test, ageing test and voltage drop verification for AWG or kcmil wire sizes 30 Table D.4 Short-time withstand current and corresponding wire sizes in mm231 Table D.5 Short-time withstand current and corresponding wire sizes in AWG .32 BS EN 60947-7-1:2009 6 60947-7-1 I
35、EC:2009 LOW-VOLTAGE SWITCHGEAR AND CONTROLGEAR Part 7-1: Ancillary equipment Terminal blocks for copper conductors 1 General 1.1 Scope This part of IEC 60947 specifies requirements for terminal blocks with screw-type or screw-less-type clamping units primarily intended for industrial or similar use
36、and to be fixed to a support to provide electrical and mechanical connection between copper conductors. lt applies to terminal blocks intended to connect round copper conductors, with or without special preparation, having a cross-section between 0,2 mm2and 300 mm2(AWG 24/600 kcmil), intended to be
37、used in circuits of a rated voltage not exceeding 1 000 V a.c. up to 1 000 Hz or 1 500 V d.c. NOTE AWG is the abbreviation of “American Wire Gage” (Gage (US) = Gauge (UK) kcmil = 1 000 cmil; 1 cmil = 1 circular mil = surface of a circle having a diameter of 1 mil 1 mil = 1/1 000 inch This standard m
38、ay be used as a guide for terminal blocks requiring the fixing of special devices to the conductors, for example quick connect terminations or wrapped connections, etc.; terminal blocks providing direct contact to the conductors by means of edges or points penetrating the insulation, for example ins
39、ulation displacement connections, etc.; special types of terminal blocks, for example with diodes or varistors or similar component holders, etc. Where applicable in this standard, the term “clamping unit” has been used instead of the term “terminal”. This is taken into account in case of reference
40、to IEC 60947-1. 1.2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. IEC 6069
41、5-11-5:2004, Fire hazard testing Part 11-5: Test flames Needle-flame test method Apparatus, confirmatory test arrangement and guidance IEC 60947-1:2007, Low-voltage switchgear and controlgear Part 1: General rules ISO 4046-4:2002, Paper, board, pulp and related terms Vocabulary Part 4: Paper and boa
42、rd grades and coverted products BS EN 60947-7-1:200960947-7-1 IEC:2009 7 2 Definitions For the purposes of this document, the definitions given in IEC 60947-1, together with the following definitions, apply. 2.1 terminal block insulating part carrying one or more mutually insulated terminal assembli
43、es and intended to be fixed to a support 2.2 rated cross-section value of the maximum cross-section of all connectable types of conductors, rigid (solid and stranded) and flexible, stated by the manufacturer, and to which certain thermal, mechanical and electrical requirements are referred 2.3 rated
44、 connecting capacity range of cross-sections and, if applicable, the number of connectable conductors, for which the terminal block is designed 2.4 terminal assembly two or more clamping units fixed to the same conductive part 3 Classification Distinction is made between various types of terminal bl
45、ocks as follows: method of fixing the terminal block to the support; number of poles; type of clamping units: screw-type clamping units or screwless-type clamping units; ability to receive prepared conductors (see 2.3.27 of IEC 60947-1); terminal assemblies with identical or dissimilar clamping unit
46、s; number of clamping units on each terminal assembly; service conditions. 4 Characteristics 4.1 Summary of characteristics The characteristics of a terminal block are as follows: type of terminal block (see 4.2); rated and limiting values (see 4.3). 4.2 Type of terminal block The following shall be
47、 stated: type of clamping units (e.g. screw-type, screwless-type); number of clamping units. BS EN 60947-7-1:2009 8 60947-7-1 IEC:2009 4.3 Rated and limiting values 4.3.1 Rated voltages Subclauses 4.3.1.2 and 4.3.1.3 of IEC 60947-1 apply. 4.3.2 Short-time withstand current A specified r.m.s. value o
48、f current which a terminal block shall be able to withstand during a specified short-time under prescribed conditions of use and behaviour (see 7.2.3 and 8.4.6). 4.3.3 Standard cross-sections The standard values of cross-sections of round copper conductors to be used are contained in Table 1. Table
49、1 Standard cross-sections of round copper conductors Comparison between AWG/kcmil and metric sizes Metric size ISO mm2Size AWG/kcmil Equivalent metric area mm20,2 24 0,205 0,34 22 0,324 0,5 20 0,519 0,75 18 0,82 1 1,5 16 1,3 2,5 14 2,1 4 12 3,3 6 10 5,10 8 8,4 16 6 13,3 25 4 21,2 35 2 33,6 50 0 53,5 70 00 67,4 95 000 85 0000 107,2 120 250 kcmil 127 150 300 kcmil 152 185 350 kcmil 177 240 500 kcm
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