1、 Collection of SANS standards in electronic format (PDF) 1. Copyright This standard is available to staff members of companies that have subscribed to the complete collection of SANS standards in accordance with a formal copyright agreement. This document may reside on a CENTRAL FILE SERVER or INTRA
2、NET SYSTEM only. Unless specific permission has been granted, this document MAY NOT be sent or given to staff members from other companies or organizations. Doing so would constitute a VIOLATION of SABS copyright rules. 2. Indemnity The South African Bureau of Standards accepts no liability for any
3、damage whatsoever than may result from the use of this material or the information contain therein, irrespective of the cause and quantum thereof. ISBN 978-0-626-22819-4 SANS 60947-7-1:2009Edition 3IEC 60947-7-1:2009Edition 3SOUTH AFRICAN NATIONAL STANDARD Low-voltage switchgear and controlgear Part
4、 7-1: Ancillary equipment Terminal blocks for copper conductors This national standard is the identical implementation of IEC 60947-7-1:2009 and is adopted with the permission of the International Electrotechnical Commission. WARNING Can only be used in conjunction with SANS 60947-1. Published by SA
5、BS Standards Division 1 Dr Lategan Road Groenkloof Private Bag X191 Pretoria 0001Tel: +27 12 428 7911 Fax: +27 12 344 1568 www.sabs.co.za SABS SANS 60947-7-1:2009 Edition 3 IEC 60947-7-1:2009 Edition 3 Table of changes Change No. Date Scope National foreword This South African standard was approved
6、by National Committee SABS SC 67B, Electricity distribution systems and components Low-voltage switchgear, in accordance with procedures of the SABS Standards Division, in compliance with annex 3 of the WTO/TBT agreement. This SANS document was published in July 2009. This SANS document supersedes S
7、ANS 60947-7-1:2003 (edition 2). IEC 60947-7-1Edition 3.0 2009-04INTERNATIONAL STANDARD NORME INTERNATIONALELow-voltage switchgear and controlgear Part 7-1: Ancillary equipment Terminal blocks for copper conductors Appareillage basse tension Partie 7-1: Matriels accessoires Blocs de jonction pour con
8、ducteurs en cuivre INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE VICS 29.130.20 PRICE CODECODE PRIXISBN 2-8318-1038-0 Registered trademark of the International Electrotechnical Commission Marque dpose de la Commission Electrotechnique Internationale SANS 60947-
9、7-1:2009This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS . 2 60947-7-1 IEC:2009 CONTENTS FOREWORD.4 1 General 6 1.1 Scope6 1.2 Normative references 6 2 Definitions 7 3 Classification7 4 Characteristics .7 4.1 Summary of characteristics .7 4.2 T
10、ype 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 connecting capacity.9 5 Product information 9 5.1 Marking .9 5.2 Additional information9 6 Normal service, mount
11、ing 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 10 7.1.4 Terminal identification and marking .10 7.1.5 Resistance to abnormal heat and fire.11 7.1.6 Ra
12、ted 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 drop12 7.2.5 Electrical performance after ageing (for screwless-type terminal blocks only) .12 7.3 Electroma
13、gnetic 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 support13 8.3.3 Mechanical properties of clamping units 14 8.4 Verification of electrical characteristics15
14、 8.4.1 General .15 8.4.2 Verification of clearances and creepage distances 16 8.4.3 Dielectric tests.16 SANS 60947-7-1:2009This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS .60947-7-1 IEC:2009 3 8.4.4 Verification of the voltage drop 16 8.4.5 Te
15、mperature-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) It
16、ems 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
17、 verification 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
18、of 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
19、Values 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 t
20、est 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 SANS 60947-7-1:2009This s tandar
21、d may only be used and printed by approved subscription and freemailing clients of the SABS . 4 60947-7-1 IEC:2009 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ LOW-VOLTAGE SWITCHGEAR AND CONTROLGEAR Part 7-1: Ancillary equipment Terminal blocks for copper conductors FOREWORD 1) The International Elec
22、trotechnical 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.
23、 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 Na
24、tional 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
25、(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 representatio
26、n 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
27、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.
28、Any divergence between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in the latter. 5) IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any equipment declared to be in conformity with an IEC Publ
29、ication. 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, pro
30、perty 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
31、 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 an
32、y or all such patent rights. International Standard IEC 60947-7-1 has been prepared by subcommittee 17B: Low-voltage switchgear and controlgear, of IEC technical committee 17: Switchgear and controlgear. This third edition of IEC 60947-7-1 cancels and replaces the second edition, published in 2002,
33、and constitutes a technical revision. The main technical modifications of this standard since this previous publication are listed below: added in the scope that this standard may be used as a guide for special types of terminal blocks, for example with diodes or varistors or similar component holde
34、rs; the conventional free air thermal current added 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
35、specified in 8.2; SANS 60947-7-1:2009This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS .60947-7-1 IEC:2009 5 requirements regarding clearances and creepage distances replaced by reference to Annex H of IEC 60947-1, Annex A deleted; requirements
36、for tightening torques for the tests improved and referenced to Table 4 of IEC 60947-1, Annex C deleted; in 8.3.3.3 changed reference for pull-out force to IEC 60947-1; the wording of the test of the voltage drop improved in 8.4.4; the wording of the short-time withstand current test improved in 8.4
37、.6; Annex D with additional requirements for test disconnect terminal blocks added. The scope modified accordingly. This standard shall be read in conjunction with IEC 60947-1. The provisions of the general rules dealt with in IEC 60947-1 are applicable to this standard, where specifically called fo
38、r. Clauses and subclauses, tables, figures and annexes thus applicable are identified by reference to IEC 60947-1, e.g. 1.2 of IEC 60947-1, Table 4 of IEC 60947-1 or Annex A of IEC 60947-1. The text of this standard is based on the following documents: FDIS Report on voting 17B/1654/FDIS 17B/1668/RV
39、D 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 the parts in the IEC 60947 series, under the general title Low-volt
40、age switchgear and controlgear, can be found on the IEC website. The committee has decided that the contents of this publication will remain unchanged until the maintenance result date indicated on the IEC web site under “http:/webstore.iec.ch“ in the data related to the specific publication. At thi
41、s date, the publication will be reconfirmed, withdrawn, replaced by a revised edition, or amended. SANS 60947-7-1:2009This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS . 6 60947-7-1 IEC:2009 LOW-VOLTAGE SWITCHGEAR AND CONTROLGEAR Part 7-1: Ancil
42、lary 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 and to be fixed to a support to provide electrical and mechani
43、cal 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 used in circuits of a rated voltage not exceeding 1 000 V a.c.
44、 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 may be used as a guide for terminal blocks requiring the fixing
45、 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 insulation displacement connections, etc.; special types of termi
46、nal 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 to IEC 60947-1. 1.2 Normative references The following referen
47、ced 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 60695-11-5:2004, Fire hazard testing Part 11-5: Test flames Needle
48、-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 board grades and coverted products SANS 60947-7-1:2009This s tand
49、ard may only be used and printed by approved subscription and freemailing clients of the SABS .60947-7-1 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 assemblies and intended to be fixed to a support 2.2 rated cross-section value of the maximum cross-section of
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