1、 IEC/TR 61439-0 Edition 2.0 2013-04 TECHNICAL REPORT Low-voltage switchgear and controlgear assemblies Part 0: Guidance to specifying assemblies IEC/TR 61439-0:2013(E) THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2013 IEC, Geneva, Switzerland All rights reserved. Unless otherwise specified, no
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9、rt 0: Guidance to specifying assemblies INTERNATIONAL ELECTROTECHNICAL COMMISSION XB ICS 29.130.20 PRICE CODE ISBN 978-2-83220-787-1 Registered trademark of the International Electrotechnical Commission Warning! Make sure that you obtained this publication from an authorized distributor. 2 TR 61439-
10、0 IEC:2013(E) CONTENTS FOREWORD . 5 INTRODUCTION . 7 1 Scope . 9 2 Normative references . 9 3 Terms and definitions . 10 4 Application of ASSEMBLIES within the IEC 61439 series . 10 4.1 General . 10 4.2 ASSEMBLY design and verification . 10 4.3 Service conditions and interface characteristics 10 4.4
11、 Design . 11 5 Electrical system 11 5.1 General . 11 5.2 Earthing system 11 5.3 Nominal voltage 11 5.4 Transient overvoltages 12 5.5 Unusual voltage transients, temporary overvoltages 13 5.6 Rated frequency f n(Hz) 13 5.7 Additional on-site testing requirements: wiring, operational performance and f
12、unction . 14 6 Short-circuit withstand capability 14 6.1 General . 14 6.2 Prospective short-circuit current at supply terminals I cp(kA) . 14 6.3 Prospective short-circuit current in the neutral . 15 6.4 Prospective short-circuit current in the protective circuit 15 6.5 Short-circuit protective devi
13、ce (SCPD). 15 6.6 Co-ordination of short-circuit protective devices including external short- circuit protective device details 16 6.7 Data associated with loads likely to contribute to the short-circuit current 16 7 Protection of persons against electric shock . 17 7.1 General . 17 7.2 Basic protec
14、tion (protection against direct contact) 17 General . 17 7.2.1Basic insulation provided by insulating material . 17 7.2.2Barriers or enclosures . 17 7.2.3 7.3 Fault protection (protection against indirect contact) 18 General . 18 7.3.1Requirements for the protective conductor to facilitate automatic
15、 7.3.2 disconnection of the supply . 18 Electrical separation 19 7.3.3Protection by total insulation 19 7.3.4 8 Installation environment 20 8.1 General . 20 8.2 Location type . 20 8.3 Protection against ingress of solid foreign bodies and ingress of water 20 8.4 External mechanical impact . 21 8.5 R
16、esistance to UV radiation 21 8.6 Resistance to corrosion . 21 TR 61439-0 IEC:2013(E) 3 8.7 Ambient air temperature 21 8.8 Maximum relative humidity 21 8.9 Pollution degree 22 8.10 Altitude 22 8.11 EMC environment 22 8.12 Special service conditions . 23 General . 23 8.12.1Climatic conditions 24 8.12.
17、2Protection against ingress of solid foreign bodies and ingress of 8.12.3 water . 24 Shock, vibration, seismic occurrence and external mechanical impact 8.12.4 (IK) 24 Fire and explosion hazards 24 8.12.5Exceptional overvoltages . 25 8.12.6EMC environment 25 8.12.7 9 Installation method . 25 9.1 Gen
18、eral . 25 9.2 Assembly type . 25 9.3 Portability 26 9.4 Maximum overall dimensions and weight . 26 9.5 External conductor type(s) . 26 9.6 Direction(s) of external conductors 26 9.7 External conductor material . 26 9.8 External phase conductor, cross-sections, and terminations 27 9.9 External PE, N,
19、 PEN conductors cross-sections, and terminations 27 9.10 Special terminal identification requirements . 27 10 Storage and handling . 28 10.1 General . 28 10.2 Maximum dimensions and weight of transport units . 28 10.3 Methods of transport (e.g. forklift, crane) . 28 10.4 Environmental conditions dif
20、ferent from the service conditions 28 10.5 Packing details 28 11 Operating arrangements . 28 11.1 General . 28 11.2 Access to manually operated devices 29 11.3 Isolation of load installation equipment items . 29 12 Maintenance and upgrade capabilities 30 12.1 General . 30 12.2 Requirements related t
21、o accessibility for inspection and similar operations . 30 12.3 Requirements related to accessibility for maintenance in service by authorized persons 30 12.4 Requirements related to extension under voltage 31 12.5 Protection against direct contact with hazardous live internal parts during maintenan
22、ce or upgrade 31 12.6 Method of functional units connection 31 12.7 Operating and maintenance gangways within an ASSEMBLY . 32 12.8 Internal separation 32 13 Current carrying capability 32 13.1 General . 32 4 TR 61439-0 IEC:2013(E) 13.2 Rated current I nA(A) (maximum current allowable) . 32 13.3 Rat
23、ed current of circuits I nc(A) . 33 13.4 Rated diversity factor (RDF) 33 13.5 Ratio of cross-section of the neutral conductor to phase conductors 33 General . 33 13.5.1Phase conductors up to and including 16 mm 233 13.5.2Phase conductors above 16 mm 233 13.5.3 14 ASSEMBLY design and routine verifica
24、tion processes . 34 14.1 Design verification . 34 Object 34 14.1.1Methods 34 14.1.2Records . 34 14.1.3 14.2 Routine verification 34 General . 34 14.2.1Records . 35 14.2.2 Annex A (informative) Cross-section of copper conductors suitable for connection to terminals for external conductors 36 Annex B
25、(informative) Forms of internal separation (see 12.8) . 37 Annex C (informative) Specification guidance for IEC 61439-2 . 41 Annex D (informative) Specification guidance for IEC 61439-3 . 47 Annex E (informative) Specification guidance for IEC 61439-4 . 51 Annex F (informative) Specification guidanc
26、e for future IEC 61439-5 . 55 Annex G (informative) Specification guidance for IEC 61439-6 56 Annex H (informative) Specification guidance for IEC 61439-7 . 60 Annex I (informative) List of notes concerning certain countries . 61 Bibliography 62 Figure 1 Required rated impulse withstand voltage 13 F
27、igure B.1 Symbols used in Figures B.2 and B.3 38 Figure B.2 Forms 1 and 2 39 Figure B.3 Forms 3 and 4 40 Table A.1 Cross-section of copper conductors suitable for connection to terminals for external conductors . 36 Table B.1 Forms of internal separation. 37 Table C.1 Items subject to agreement betw
28、een the ASSEMBLY manufacturer and the user 41 Table C.2 Examples of optional items subject to agreement between the ASSEMBLY manufacturer and the user 45 Table D.1 Items subject to agreement between the ASSEMBLY manufacturer and the user 47 Table E.1 Items subject to agreement between the ASSEMBLY m
29、anufacturer and the user 51 Table G.1 Items subject to agreement between the ASSEMBLY manufacturer and the user 56 TR 61439-0 IEC:2013(E) 5 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ LOW-VOLTAGE SWITCHGEAR AND CONTROLGEAR ASSEMBLIES Part 0: Guidance to specifying assemblies FOREWORD 1) The Internat
30、ional 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 co-operation on all questions concerning standardization in the electrical and electron
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39、nce 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 application of this publication. 9) Attention is drawn to the possibility that some of the el
40、ements 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. The main task of IEC technical committees is to prepare International Standards. However, a technical committee may propose the publication of a techni
41、cal report when it has collected data of a different kind from that which is normally published as an International Standard, for example “state of the art“. IEC 61439-0, which is a technical report, has been prepared by subcommittee 17D: Low- voltage switchgear and controlgear assemblies, of IEC te
42、chnical committee 17: Switchgear and controlgear. This second edition cancels and replaces the first edition published in 2010. It constitutes a technical revision. This second edition includes the following significant technical changes with respect to the previous edition: alignment with IEC 61439
43、-1:2011; alignment of Annex B with Annex AA of IEC 61439-2:2011; alignment of Table C.1 with Table BB.1 of IEC 61439-2:2011; 6 TR 61439-0 IEC:2013(E) addition of a new Annex D regarding IEC 61439-3; addition of a new Annex E regarding IEC 61439-4; addition of a new Annex G regarding IEC 61439-6; gen
44、eral editorial review. The text of this technical report is based on the following documents: Enquiry draft Report on voting 17D/458/DTR 17D/467A/RVC Full information on the voting for the approval of this technical report can be found in the report on voting indicated in the above table. This publi
45、cation has been drafted in accordance with the ISO/IEC Directives, Part 2. The readers attention is drawn to the fact that Annex I lists all of the “in-some-country” clauses on differing practices of a less permanent nature relating to the subject of this Technical Report. A list of all parts of the
46、 IEC 61439 series, under the general title Low-voltage switchgear and controlgear assemblies, can be found on the IEC web site. 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“ i
47、n the data related to the specific publication. At this date, the publication will be reconfirmed, withdrawn, replaced by a revised edition, or amended. A bilingual version of this publication may be issued at a later date. TR 61439-0 IEC:2013(E) 7 INTRODUCTION For the purposes of this technical rep
48、ort, the user is the party who specifies or selects the ASSEMBLY characteristics. The user may be the same party as the one who will use and operate the ASSEMBLY, or someone acting on their behalf. The aim of this technical report is to provide the user with guidance on the specification that should
49、 be provided in order to achieve the desired design of an assembly. Throughout this technical report, the term ASSEMBLY is used for a low-voltage switchgear and controlgear assembly. The term “manufacturer” refers to the ASSEMBLY manufacturer unless specifically noted otherwise. The purpose of the IEC 61439 series of standards is to harmonize as far as practicable, all the general rules and requirements that apply to ASSEMBLIES. The series further seeks, in order to obtain uniformit
