IEC 61439-5:2010

IEC 61439-5 ®
Edition 1.0 2010-11
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Low-voltage switchgear and controlgear assemblies –
Part 5: Assemblies for power distribution in public networks

Ensembles d'appareillage à basse tension –
Partie 5: Ensembles pour réseaux de distribution publique

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IEC 61439-5 ®
Edition 1.0 2010-11
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Low-voltage switchgear and controlgear assemblies –
Part 5: Assemblies for power distribution in public networks

Ensembles d'appareillage à basse tension –
Partie 5: Ensembles pour réseaux de distribution publique

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
U
CODE PRIX
ICS 29.130.20 ISBN 978-2-88912-266-0
– 2 – 61439-5 Ó IEC:2010
CONTENTS
FOREW ORD . 3
1 Sc o pe . 5
2 Normative references . 6
3 Terms and definitions . 6
4 Symbols and abbreviations . 7
5 Interface characteristics . 7
6 Information . 7
7 Service conditions . 8
8 Constructional requirements . 8
9 Performance requirements. 11
10 Design verification . 11
11 Routine verification . 24
Annex AA (normative) Cross-section of conductors . 25

Figure 101 – Typical distribution network . 5
Figure 102 – Diagram of test to verify resistance to shock load of a PENDA-O. 14
Figure 103 – Diagram of test to verify impact force withstand of a PENDA-O . 15
Figure 104 – Diagram of test to verify the resistance to static load. 16
Figure 105 – Sandbag for test to verify the resistance to shock load . 17
Figure 106 – Diagram of test to verify resistance to torsional stress of a PENDA-O . 18
Figure 107 – Diagram of test to verify the mechanical strength of doors . 21
Figure 108 – Striker element for test of resistance to mechanical shock impacts
induced by sharp-edged objects . 22
Figure 109 – Typical test arrangement for mechanical strength of base . 23

Table 101 – Values of assumed loading . 7
Table 102 – Axial load to be applied to the inserts . 21
Table AA.1 – Minimum and maximum cross-section of copper and aluminium
conductors, suitable for connection (see 8.8). 25
Table AA.2 – Standard cross-sections of round copper conductors and approximate
relationship between mm and AWG/kcmil sizes (see 8.8 of Part 1) . 26

61439-5 Ó IEC:2010 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
LOW-VOLTAGE SWITCHGEAR AND CONTROLGEAR ASSEMBLIES –

Part 5: Assemblies for power distribution in public networks

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 co-operation on all questions concerning standardization in the electrical and electronic fields. To
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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 61439-5 has been prepared by subcommittee 17D: Low-voltage
switchgear and controlgear assemblies, of IEC technical committee 17: Switchgear and
controlgear.
This first edition of IEC 61439-5 cancels and replaces the second edition of IEC 60439-5
(2006), and constitutes a technical revision.
This edition of IEC 61439-5 includes the following significant technical changes with respect
to the latest edition of IEC 60439-5:
– alignment on IEC 61439-1 regarding the structure and technical content, as applicable;
– introduction of new verifications, accordingly;
– harmonisation of the requirements of substation cable distribution boards and cable
distribution cabinets, thereby eliminating the need to identify and define two catagories of
assembly;
– simpler standard as a result of a reduction in the number of assembly types defined and
the acronyms used to identify the different assemblies.

– 4 – 61439-5 Ó IEC:2010
The text of this standard is based on the following documents:
FDIS Report on voting
17D/422/FDIS 17D/430/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.
This standard is to be read 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 only applicable to this
standard insofar as they are specifically cited. When this standard states “addition”,
“modification” or “replacement”, the relevant text in Part 1 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 5 that are new are numbered starting with 101.
New annexes in this Part 5 are lettered AA, BB, etc.
In this standard, terms written in small capitals are defined in Clause 3.
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.
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 publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
61439-5 Ó IEC:2010 – 5 –
LOW-VOLTAGE SWIT
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