IEC_61439-4-2012.pdf

DRAFT SOUTH AFRICAN STANDARD(DSS):PUBLIC ENQUIRY STAGE FOR INTERNATIONAL STANDARD ADOPTION Document number SC67B/SANS61439-4/3 Reference SANS 61439-4 Date of circulation 07 May 2013 Closing date 06 June 2013 Number and title:SANS 61439-4,Low-voltage switchgear and controlgear assemblies-Part 4:Particular requirements for assemblies for construction sites(ACS)Remarks:PLEASE NOTE:The technical committee,SABS SC 67B.,has reached consensus that this international standard be adopted as a South African standard,and that no technical or editorial changes be made to the text.It is now made available by way of public enquiry to all interested and affected parties for public comment on the proposal to adopt,and to the technical committee for record purposes.If you disagree with the decision to adopt,please submit your motivated objection by the indicated closing date,either by mail,or by fax,or by e-mail to SABS Standards Division Attention:Compliance and Development department Private Bag X191 Pretoria 0001 Fax No.:(012)344-1568(for attention:dsscomments)E-mail:dsscommentssabs.co.za For practical implementation in South Africa,it is normally the case that international standards are adopted unchanged;where technical mistakes are discovered in the source document,the normal practice would be for the Standards Division to refer these to the issuing organization for rectification.THIS DOCUMENT IS A DRAFT CIRCULATED FOR PUBLIC COMMENT.IT MAY NOT BE REFERRED TO AS A SOUTH AFRICAN STANDARD UNTIL PUBLISHED AS SUCH.IN ADDITION TO THEIR EVALUATION AS BEING ACCEPTABLE FOR INDUSTRIAL,TECHNOLOGICAL,COMMERCIAL AND USER PURPOSES,DRAFT SOUTH AFRICAN STANDARDS MAY ON OCCASION HAVE TO BE CONSIDERED IN THE LIGHT OF THEIR POTENTIAL TO BECOME STANDARDS TO WHICH REFERENCE MAY BE MADE IN LAW.AZ96.10A 2013/03/14 sabs pta ISBN 978-0-626-SANS 61439-4:2013Edition 1IEC 61439-4:2012Edition 1 SOUTH AFRICAN NATIONAL STANDARD Low-voltage switchgear and controlgear assemblies Part 4:Particular requirements for assemblies for construction sites(ACS)This national standard is the identical implementation of IEC 61439-4:2012 and is adopted with the permission of the International Electrotechnical Commission.WARNING Can only be used in conjunction with SANS 61439-1.Published by SABS 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 61439-4:2013 Edition 1 IEC 61439-4:2012 Edition 1 Table of changes Change No.Date Scope National foreword This South African standard was approved 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 xxxxx 2013.IEC 61439-4 Edition 1.0 2012-11 INTERNATIONAL STANDARD NORME INTERNATIONALE Low-voltage switchgear and controlgear assemblies Part 4:Particular requirements for assemblies for construction sites(ACS)Ensembles dappareillage basse tension Partie 4:Exigences particulires pour ensembles de chantiers(EC)INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE U ICS 29.130.20 PRICE CODE CODE PRIX ISBN 978-2-83220-466-5 Registered trademark of the International 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 61439-4 IEC:2012 CONTENTS FOREWORD.3 1 Scope.5 2 Normative references.5 3 Terms and definitions.6 4 Symbols and abbreviations.8 5 Interface characteristics.8 6 Information.9 7 Service conditions.10 8 Constructional requirements.11 9 Performance requirements.13 10 Design verification.13 11 Routine verification.16 101 Particular features of ACS.16 Annexes.19 Annex C(informative)User information template.19 Annex D(informative)Design verification.20 Annex O(informative)Guidance on temperature rise verification.21 Annex P(normative)Verification of the short-circuit withstand strength of busbar structures by comparison with a tested reference design by calculation.22 Annex AA(informative)List of notes concerning certain countries.23 Annex BB(Void).24 Annex CC(informative)Items subject to agreement between the ASSEMBLY manufacturer and the user.25 Bibliography.29 Figure 101 Impact test using striking element.15 Table 101 Values of assumed loading.18 Table D.1 List of design verifications to be performed.20 Table CC.1 Items subject to agreement between the ASSEMBLY manufacturer and the user.25 61439-4 IEC:2012 3 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ LOW-VOLTAGE SWITCHGEAR AND CONTROLGEAR ASSEMBLIES Part 4:Particular requirements for assemblies for construction sites(ACS)FOREWORD 1)The International Electrotechnical Commission(IEC)is a worldwide organization for standardization comprisi