IEC 62208-2011 Empty enclosures for low-voltage switchgear and controlgear assemblies - General requirements《对低压开关设备和控制设备所用空外壳的一般要求》.pdf

1、 IEC 62208 Edition 2.0 2011-08 INTERNATIONAL STANDARD NORME INTERNATIONALE Empty enclosures for low-voltage switchgear and controlgear assemblies General requirements Enveloppes vides destines aux ensembles dappareillage basse tension Exigences gnrales IEC 62208:2011 THIS PUBLICATION IS COPYRIGHT PR

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16、ciec.ch Tl.: +41 22 919 02 11 Fax: +41 22 919 03 00 IEC 62208 Edition 2.0 2011-08 INTERNATIONAL STANDARD NORME INTERNATIONALE Empty enclosures for low-voltage switchgear and controlgear assemblies General requirements Enveloppes vides destines aux ensembles dappareillage basse tension Exigences gnra

17、les INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE S ICS 29.130.20 PRICE CODE CODE PRIX ISBN 978-2-88912-661-3 Registered trademark of the International Electrotechnical Commission Marque dpose de la Commission Electrotechnique Internationale 2 62208 IEC:2011 CO

18、NTENTS FOREWORD . 4 1 Scope . 6 2 Normative references . 6 3 Terms and definitions . 7 4 Classification 8 5 EMC requirements 8 6 Information to be given regarding the enclosure . 9 6.1 General . 9 6.2 Marking . 9 6.3 Documentation 9 6.3.1 General . 9 6.3.2 Dimensions . 9 6.3.3 Mounting arrangements

19、 10 6.3.4 Permissible loads 10 6.3.5 Lifting and transport support 10 6.3.6 Protective circuit 10 7 Service conditions 10 7.1 General . 10 7.2 Normal service conditions . 10 7.2.1 Ambient air temperature 10 7.2.2 Humidity conditions . 11 7.3 Special service conditions . 11 7.4 Conditions during tra

20、nsport and storage 11 8 Design and construction . 11 8.1 General . 11 8.2 Static loads . 12 8.3 Lifting and transport support 12 8.4 Access to the interior of the enclosure . 12 8.5 Protective circuit 12 8.6 Dielectric strength . 12 8.7 Degree of protection (IK code) . 12 8.8 Degree of protection (I

21、P code) . 13 9 Type tests 13 9.1 General . 13 9.2 General conditions of tests 13 9.3 Marking . 14 9.4 Static loads . 14 9.5 Lifting 14 9.6 Axial loads of metal inserts 15 9.7 Degree of protection against external mechanical impacts (IK code) . 15 9.8 Degree of protection (IP code) . 16 9.8.1 Degree

22、of protection against access to hazardous parts and against the ingress of solid foreign objects indicated by first characteristic numeral . 16 9.8.2 Degree of protection against ingress of water as indicated by second characteristic numeral . 16 62208 IEC:2011 3 9.8.3 Degree of protection against h

23、azardous parts as indicated by additional letter 17 9.9 Properties of insulating materials 17 9.9.1 Thermal stability 17 9.9.2 Resistance to normal heat . 17 9.9.3 Resistance to abnormal heat and to fire . 17 9.10 Dielectric strength . 18 9.10.1 General . 18 9.10.2 Preconditioning 19 9.10.3 Enclosur

24、es without metal elements inside the protected space 19 9.10.4 Enclosures having metal elements inside the protected space . 19 9.10.5 Results to be obtained . 19 9.11 Continuity of the protective circuit 19 9.12 Resistance to ultra-violet (UV) radiation 20 9.13 Resistance to corrosion . 20 9.13.1 G

25、eneral . 20 9.13.2 Test procedure 20 9.13.3 Results to be obtained . 21 9.14 Thermal power dissipation capability . 21 Bibliography 22 Table 1 Number of samples to be tested and order of test per sample . 13 Table 2 Axial loads of metal inserts 15 4 62208 IEC:2011 INTERNATIONAL ELECTROTECHNICAL COMM

26、ISSION _ EMPTY ENCLOSURES FOR LOW-VOLTAGE SWITCHGEAR AND CONTROLGEAR ASSEMBLIES GENERAL REQUIREMENTS FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising all national electrotechnical committees (IEC National Committees). The obje

27、ct of IEC is to promote international 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 Specificatio

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29、ing with the IEC also participate in this preparation. IEC collaborates closely with the International Organization for Standardization (ISO) in accordance with conditions determined by agreement between the two organizations. 2) The formal decisions or agreements of IEC on technical matters express

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33、rovide any attestation of conformity. 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

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36、s 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 any or all such patent rights. International Standard IEC

37、 62208 has been prepared by subcommittee 17D: Low-voltage switchgear and controlgear assemblies, of IEC technical committee 17: Switchgear and controlgear. This second edition cancels and replaces the first edition published in 2002. This edition constitutes a technical revision and includes the fol

38、lowing significant technical changes with respect to the last edition: consideration of the restructured series of standards IEC 61439; alignment of test procedures with the newest relevant standards. 62208 IEC:2011 5 The text of this standard is based on the following documents: FDIS Report on voti

39、ng 17D/442/FDIS 17D/447/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 drafted in accordance with the ISO/IEC Directives, Part 2. The committee has decided that the contents of this pub

40、lication 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 publication will be reconfirmed, withdrawn, replaced by a revised edition, or amended. 6 62208 IEC:2011 EMPTY ENCLOSU

41、RES FOR LOW-VOLTAGE SWITCHGEAR AND CONTROLGEAR ASSEMBLIES GENERAL REQUIREMENTS 1 Scope This International Standard applies to empty enclosures, prior to the incorporation of switchgear and controlgear components by the user, as supplied by the enclosure manufacturer. This standard specifies general

42、definitions, classifications, characteristics and test requirements of enclosures to be used as part of switchgear and controlgear assemblies (e.g. in accordance with the IEC 61439 series), the rated voltage of which does not exceed 1 000 V a.c. or 1 500 V d.c., and suitable for general use for eith

43、er indoor or outdoor applications. NOTE 1 Additional requirements may apply for specific applications. NOTE 2 The United States of America (USA) uses enclosure “Type” designations according to NEMA 250. The NEMA Enclosure Type designations specify additional environmental requirements for conditions

44、 such as corrosion, rust, icing, oil, and coolants. For this reason, the IEC Enclosure Classification Designations IP are used with an enclosure Type designation number appropriate for these markets. This standard does not apply to enclosures, which are covered by other specific products standards (

45、e.g. IEC 60670 series). Compliance with the safety requirements of the applicable product standard is the responsibility of the assembly manufacturer. NOTE 3 This standard may serve as a basis for other technical committees. 2 Normative references The following referenced documents are indispensable

46、 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 60068-2-2:2007, Environmental testing Part 2-2: Tests Test B: Dry heat IEC 60068-2-11:1981, Basic

47、 environmental testing procedures Part 2-11: Tests Test Ka: Salt mist IEC 60068-2-30:2005, Environmental testing Part 2-30: Tests Test Db: Damp heat, cyclic (12 h + 12 h cycle) IEC 60085:2007, Electrical insulation Thermal evaluation and designation IEC 60529:1989, Degrees of protection provided by

48、enclosures (IP Code) 1IEC 60695-2-10:2000, Fire hazard testing Part 2-10: Glowing/hot-wire based test methods Glow-wire apparatus and common test procedure _ 1There is a consolidated edition 2.1 (2001) that includes IEC 60529 (1989) and its Amendment 1 (1999). 62208 IEC:2011 7 IEC 60695-2-11:2000, F

49、ire hazard testing Part 2-11: Glowing/hot-wire based test methods Glow-wire flammability test methods for end-products IEC 61439-1:2011, Low-voltage switchgear and controlgear assemblies Part 1: General rules 2IEC 62262:2002, Degrees of protection provided by enclosures for electrical equipment against external mechanical impacts (IK code) ISO 178:2001, Plastics Determination of fle