1、 IEC 60670-24 Edition 2.0 2011-03 INTERNATIONAL STANDARD NORME INTERNATIONALE Boxes and enclosures for electrical accessories for household and similar fixed electrical installations Part 24: Particular requirements for enclosures for housing protective devices and other power dissipating electrical
2、 equipment Botes et enveloppes pour appareillage lectrique pour installations lectriques fixes pour usages domestiques et analogues Partie 24: Exigences particulires pour enveloppes pour appareillages de protection et autres appareillages lectriques ayant une puissance dissipe IEC 60670-24:2011 THIS
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17、ou contactez-nous: Email: csciec.ch Tl.: +41 22 919 02 11 Fax: +41 22 919 03 00 IEC 60670-24 Edition 2.0 2011-03 INTERNATIONAL STANDARD NORME INTERNATIONALE Boxes and enclosures for electrical accessories for household and similar fixed electrical installations Part 24: Particular requirements for e
18、nclosures for housing protective devices and other power dissipating electrical equipment Botes et enveloppes pour appareillage lectrique pour installations lectriques fixes pour usages domestiques et analogues Partie 24: Exigences particulires pour enveloppes pour appareillages de protection et aut
19、res appareillages lectriques ayant une puissance dissipe INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE V ICS 29.120.10 PRICE CODE CODE PRIX ISBN 978-2-88912-391-9 Registered trademark of the International Electrotechnical Commission Marque dpose de la Commissio
20、n Electrotechnique Internationale 2 60670-24 IEC:2011 CONTENTS FOREWORD . 4 1 Scope 6 2 Normative references. 6 3 Definitions . 7 4 General requirements 8 5 General notes on tests . 8 6 Ratings 8 7 Classification . 8 8 Marking . 8 9 Dimensions 10 10 Protection against electric shock 10 11 Provisions
21、 for earthing . 11 12 Construction 11 13 Resistance to ageing, protection against ingress of solid foreign objects and against harmful ingress of water 12 14 Insulation resistance and electric strength . 12 15 Mechanical strength . 12 16 Resistance to heat . 12 17 Creepage distances, clearances and
22、distances through sealing compound 12 18 Resistance of insulating material to abnormal heat and to fire 13 19 Resistance to tracking . 13 20 Resistance to corrosion . 14 21 Electromagnetic compatibility 14 101 Verification of the maximum capability to dissipate power (P de ) . 14 102 Verification of
23、 temperature rise 15 Annex AA (normative) Instructions to be given by the manufacturer of the GP enclosure to the installer how to integrate accessories, and example of calculation 22 Annex BB (normative) Instructions to be given by the manufacturer of the PD enclosure to the installer how to integr
24、ate accessories . 30 Bibliography 32 Figure 101 Arrangement for the verification of the maximum capability to dissipate power (P de ) and for verification of temperature rise of surface type enclosures . 17 Figure 102 Heating resistor for the verification of the maximum capability to dissipate power
25、 (P de ) . 18 Figure 103 Position of the resistor for enclosures designed or intended to be fitted with rail mounting modular accessories and electrical equipment 19 Figure 104 Position of the resistor(s) for enclosures other than those designed or intended to be fitted with rail mounting accessorie
26、s and electrical equipment . 20 Figure 105 Position of the resistor(s) for enclosures other than those designed or intended to be fitted with rail mounting accessories and electrical equipment and allowing the mounting of several accessories and electrical equipment in different positions . 21 60670
27、-24 IEC:2011 3 Table 1 Classification of boxes and enclosures 8 Table 101 Creepage distances, clearances and distances through sealing compound . 13 Table 102 Diversity factor 16 Table 103 Temperatures of accessible surfaces . 17 Table AA.1 Diversity factor 24 Table AA.2 Tests and verifications . 25
28、 Table AA.3 Calculation of P dp28 Table AA.4 Calculation of P au29 4 60670-24 IEC:2011 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ BOXES AND ENCLOSURES FOR ELECTRICAL ACCESSORIES FOR HOUSEHOLD AND SIMILAR FIXED ELECTRICAL INSTALLATIONS Part 24: Particular requirements for enclosures for housing prot
29、ective devices and other power dissipating electrical equipment FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international
30、 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 Available Specifications (PAS) and Guides (hereafter referr
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36、 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 that they have the latest edition of this publication. 7
37、) 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 nature whatsoever, whether direct or indirect, or for co
38、sts (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 referenced publications is indispensable for the correct appli
39、cation 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. International Standard IEC 60670-24 has been prepared by subcom
40、mittee 23B: Plugs, socket- outlets and switches, of IEC technical committee 23: Electrical accessories. This second edition cancels and replaces the first edition published in 2005 and constitutes a technical revision. The following major changes from the first edition are introduced: new definition
41、 for basic, general purpose enclosures (GP enclosure) and enclosures for pre-determined equipment (PD enclosure); new classification and marking for general purpose enclosure (GP enclosure) and enclosure for pre-determined equipment (PD enclosure); required data for instruction sheet and/or document
42、ation according to the type of enclosure; 60670-24 IEC:2011 5 adequate space to allow mounting and connection of the accessories (fully equipped) as declared by the manufacturer; requirements for general purpose enclosure (GP enclosure) as in Clause 101; requirements for enclosure for pre-determined
43、 equipment (PD enclosure) as in Clause 102; instructions to be given by the manufacturer of the GP enclosure to the installer how to integrate accessories and example of calculation given in Annex AA; instructions to be given by the manufacturer of the PD enclosure to the installer how to integrate
44、accessories given in Annex BB. The text of this standard is based on the following documents: FDIS Report on voting 23B/982/FDIS 23B/992/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 publication has been d
45、rafted in accordance with the ISO/IEC Directives, Part 2. This standard shall be used in conjunction with IEC 60670-1. It lists the changes necessary to convert that standard into a specific standard for housing protective devices and other power dissipating electrical equipment. Where this Part 24
46、states “addition“, “modification“ or “replacement“, the relevant requirement, test specifications or explanatory matter in Part 1 shall be adapted accordingly. Clauses and subclauses, notes, figures or tables which are additional to those in Part 1 are numbered starting from 101. Additional annexes
47、to Part 1 are numbered AA, BB, etc. In this publication the following print types are used: requirements proper: in roman type. test specifications: in italic type. notes: in smaller roman type. A list of all the parts in the IEC 60670 series, under the general title Boxes and enclosures for electri
48、cal accessories for household and similar fixed electrical installations, 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 web site under “http:/webstore.iec.ch“ in the data related to
49、 the specific publication. At this date, the publication will be reconfirmed, withdrawn, replaced by a revised edition, or amended. 6 60670-24 IEC:2011 BOXES AND ENCLOSURES FOR ELECTRICAL ACCESSORIES FOR HOUSEHOLD AND SIMILAR FIXED ELECTRICAL INSTALLATIONS Part 24: Particular requirements for enclosures for housing protective devices and other power dissipating electrical equipment 1
