1、 IEC 61439-3 Edition 1.0 2012-02 INTERNATIONAL STANDARD NORME INTERNATIONALE Low-voltage switchgear and controlgear assemblies Part 3: Distribution boards intended to be operated by ordinary persons (DBO) Ensembles dappareillage basse tension Partie 3: Tableaux de rpartition destins tre utiliss par
2、des personnes ordinaires (DBO) IEC 61439-3:2012 THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2012 IEC, Geneva, Switzerland All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including
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16、9-3 Edition 1.0 2012-02 INTERNATIONAL STANDARD NORME INTERNATIONALE Low-voltage switchgear and controlgear assemblies Part 3: Distribution boards intended to be operated by ordinary persons (DBO) Ensembles dappareillage basse tension Partie 3: Tableaux de rpartition destins tre utiliss par des perso
17、nnes ordinaires (DBO) INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE R ICS 29.130.20 PRICE CODE CODE PRIX ISBN 978-2-88912-922-5 Registered trademark of the International Electrotechnical Commission Marque dpose de la Commission Electrotechnique Internationale W
18、arning! 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 61439-3 IEC:2012 CONTENTS FOREWORD . 3 1 Scope . 5 2 Normative references . 5 3 Terms and definitions . 6 4 Symbols
19、and abbreviations . 6 5 Interface characteristics . 6 6 Information . 7 7 Service conditions 7 8 Constructional requirements . 8 9 Performance requirements . 9 10 Design verification 9 11 Routine verification . 12 Annexes . 15 Annex AA (informative) Items subject to agreement between the ASSEMBLY ma
20、nufacturer and the user 16 Bibliography 20 Figure 101 Example of temperature rise verification by test of a complete DBO as in 10.10.2.3.6 14 Table 101 Values of assumed loading 13 Table 102 Tightening torque values for the verification of mechanical strength 13 Table AA.1 Items subject to agreement
21、 between the ASSEMBLY manufacturer and the user 16 61439-3 IEC:2012 3 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ LOW-VOLTAGE SWITCHGEAR AND CONTROLGEAR ASSEMBLIES Part 3: Distribution boards intended to be operated by ordinary persons (DBO) FOREWORD 1) The International Electrotechnical Commission
22、(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. To this end and in addi
23、tion 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 National Committee interes
24、ted 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 (ISO) in accordance wit
25、h 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 representation from all interested I
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29、mity. IEC is not responsible for any services carried out by independent certification bodies. 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 member
30、s of its technical committees and IEC National Committees for any personal injury, property 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
31、any other IEC Publications. 8) Attention is drawn to the Normative references cited in 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
32、 be the subject of patent rights. IEC shall not be held responsible for identifying any or all such patent rights. International Standard IEC 61439-3 has been prepared by subcommittee 17D: Low-voltage switchgear and controlgear assemblies, of IEC technical committee 17: Switchgear and controlgear. T
33、his first edition cancels and replaces the first edition of IEC 60439-3 (1990), Amendment 1 (1993) and Amendment 2 (2001). It constitutes a technical revision. This edition includes the following significant technical changes with respect to IEC 60439-3 (including the amendments): alignment with IEC
34、 61439-1:2011. 4 61439-3 IEC:2012 The text of this standard is based on the following documents: FDIS Report on voting 17D/448/FDIS 17D/450/RVD 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 standard is to be r
35、ead in conjunction with IEC 61439-1. The provisions of the general rules dealt with in IEC 61439-1 (hereinafter referred to as Part 1) are applicable to this standard where they are specifically cited. When this standard states “addition” “modification” or “replacement”, the relevant text in Part 1
36、is to be adapted accordingly. Subclauses that are numbered with a 101 (102, 103, etc.) suffix are additional to the same subclause in Part 1. Tables and figures in this Part 3 that are new are numbered starting with 101. New annexes in this Part 3 are lettered AA, BB, etc. The “in some countries” no
37、tes regarding differing national practices are contained in the following subclauses: 3.1.102 6.1 8.2.1 8.5.3 8.6.1 8.8 A list of all parts of the IEC 61439 series, under the general title Low-voltage switchgear and controlgear assemblies can be found on the IEC website. This publication has been dr
38、afted in accordance with the ISO/IEC Directives, Part 2. The committee has decided that the contents of this publication will remain unchanged until the stability date indicated on the IEC web site under “http:/webstore.iec.ch“ in the data related to the specific publication. At this date, the publi
39、cation will be reconfirmed, withdrawn, replaced by a revised edition, or amended. 61439-3 IEC:2012 5 LOW-VOLTAGE SWITCHGEAR AND CONTROLGEAR ASSEMBLIES Part 3: Distribution boards intended to be operated by ordinary persons (DBO) 1 Scope This part of IEC 61439 defines the specific requirements for di
40、stribution boards intended to be operated by ordinary persons (DBO). DBOs have the following criteria: intended to be operated by ordinary persons (e.g. switching operations and replacing fuse-links), e.g. in domestic (household) applications; outgoing circuits contain protective devices, intended t
41、o be operated by ordinary persons, complying e.g. with IEC 60898-1, IEC 61008, IEC 61009, IEC 62423 and IEC 60269-3; rated voltage to earth does not exceed 300 V a.c.; rated current (I nc ) of the outgoing circuits does not exceed 125 A and the rated current (I nA ) of the DBO does not exceed 250 A;
42、 intended for the distribution of electrical energy; enclosed, stationary; for indoor or outdoor use. DBOs may also include control and/or signaling devices associated with the distribution of electrical energy. This standard applies to all DBOs whether they are designed, manufactured and verified o
43、n a one-off basis or fully standardised and manufactured in quantity. DBOs may be assembled outside the factory of the original manufacturer. This standard does not apply to individual devices and self-contained components, such as circuit breakers, fuse switches, electronic equipment, etc. which wi
44、ll comply with the relevant product standards. This standard does not apply to the specific types of ASSEMBLIES covered by other parts of IEC 61439. 2 Normative references This clause of Part 1 applies except as follows. Addition: IEC 60068-2-75, Environmental testing Part 2:Tests Test Eh: Hammer te
45、sts IEC 60269-3, Low-voltage fuses Part 3: Supplementary requirements for fuses for use by unskilled persons (fuses mainly for household and similar applications) Examples of standardized systems of fuses A to F 6 61439-3 IEC:2012 IEC 60898-1:2010, Electrical accessories Circuit-breakers for overcur
46、rent protection for household and similar installations Part 1: Circuit-breakers for a.c. operation IEC 61008 (all parts), Residual current operated circuit-breakers without integral overcurrent protection for household and similar uses (RCCBs) IEC 61009 (all parts), Residual current operated circui
47、t-breakers with integral overcurrent protection for household and similar uses (RCBOs) IEC 61439-1:2011, Low-voltage switchgear and controlgear assemblies Part 1: General rules IEC 62423:2009, Type F and type B residual current operated circuit-breakers with and without integral overcurrent protecti
48、on for household and similar uses 3 Terms and definitions This clause of Part 1 applies except as follows. 3.1 General terms Additional terms: 3.1.101 distribution board intended to be operated by ordinary persons DBO ASSEMBLY used to distribute electrical energy in domestic (household) applications
49、 and other places where operation is intended by ordinary persons Note 1 to entry Switching operations and replacing fuse-links are examples of operations intended to be carried out by normal persons. 3.1.102 type A DBO DBO designed to accept single pole devices Note 1 to entry In the UK, a type A DBO used principally for domestic (household) installations and having a maximum incoming unit rating of 10
