EN 60439-4:2004

SLOVENSKI STANDARD
01-februar-2005
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SIST EN 60439-4:1995
SIST EN 60439-4:1995/A1:2000
SIST EN 60439-4:1995/A11:2004
SIST EN 60439-4:1995/A2:2000
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Low-voltage switchgear and controlgear assemblies -- Part 4: Particular requirements for
assemblies for construction sites (ACS)
Niederspannungs-Schaltgerätekombinationen -- Teil 4: Besondere Anforderungen an
Baustromverteiler (BV)
Ensembles d'appareillage à basse tension -- Partie 4: Règles particulières pour
ensembles de chantier (EC)
Ta slovenski standard je istoveten z: EN 60439-4:2004
ICS:
29.130.20 Nizkonapetostne stikalne in Low voltage switchgear and
krmilne naprave controlgear
91.200 Gradbena tehnologija Construction technology
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

NORME CEI
INTERNATIONALE
IEC
60439-4
INTERNATIONAL
Deuxième édition
STANDARD
Second edition
2004-06
Ensembles d'appareillage à basse tension –
Partie 4:
Règles particulières pour ensembles
de chantier (EC)
Low-voltage switchgear and
controlgear assemblies –
Part 4:
Particular requirements for assemblies
for construction sites (ACS)
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60439-4  IEC:2004 – 3 –
CONTENTS
FOREWORD.5

1 General .9
1.1 Scope and object.9
1.2 Normative references .9
2 Definitions .11
3 Classification of ASSEMBLIES .15
4 Electrical characteristics of ASSEMBLIES .15
5 Information to be given regarding the ASSEMBLY .15
5.1 Nameplates .15
6 Service conditions .17
6.1 Normal service conditions .17
7 Design and construction .19
7.1 Mechanical design.19
7.2 Enclosure and degree of protection .21
8 Test specifications.27
8.1 Classification of tests .27
8.2 Type tests .27

Figure 101 – Impact test using striking element .39
Figure 102 – Temperature and humidity profiles .39

60439-4  IEC:2004 – 5 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
LOW-VOLTAGE SWITCHGEAR AND CONTROLGEAR ASSEMBLIES –

Part 4: Particular requirements for assemblies for construction sites (ACS)

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
this end and in addition 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 interested
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 with 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 IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
misinterpretation by any end user.
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maximum extent possible in their national and regional publications. Any divergence
between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in
the latter.
5) IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any
equipment declared to be in conformity with an IEC Publication.
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
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 costs (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 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 60439-4 has been prepared by subcommittee 17D: Low-voltage
switchgear and controlgear assemblies, of IEC technical committee 17: Switchgear and
controlgear.
This second edition of IEC 60439-4 cancels and replaces the first edition (1990),
amendment 1 (1995) and amendment 2 (1999). It constitutes a technical revision.
The following major changes with respect to edition 1 (including amendments 1 and 2) have
been incorporated:
– introduction of the definition for “rated current of ACS”;
– replacement of classification based on the rated current of ACS by classification based on
the function as assigned by the manufacturer;
– amended requirements for the protection of socket-outlets with reference to the more
comprehensive requirements of IEC 60364-7-704;
– introduction of common requirements for all types of ACS.

60439-4  IEC:2004 – 7 –
The text of this standard is based on the first edition, amendments 1 and 2, and the following
documents:
FDIS Report on voting
17D/301/FDIS 17D/303/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.
Assemblies for construction sites (ACS) shall comply with all requirements of IEC 60439-1
(1999) if not otherwise indicated hereinafter and shall also comply with the particular
requirements contained in this publication.
The clauses and subclauses of this standard supplement, modify or replace the respective
clauses and subclauses in IEC 60439-1:1999.
In view of the fact that this publication should be read in conjunction with IEC 60439-1, the
numbering of its clauses and subclauses correspond to the latter.
Where there is no corresponding clause or subclause in this standard, the clause or
subclause of the main document applies without modification.
Subclauses and figures which are additional to those in part 1 are numbered starting from
101.
The committee has decided that the contents of this publication will remain unchanged until
the maintenance result 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.
60439-4  IEC:2004 – 9 –
LOW-VOLTAGE SWITCHGEAR AND CONTROLGEAR ASSEMBLIES –

Part 4: Particular requirements for assemblies for construction sites (ACS)

1 General
1.1 Scope and object
Replace the last three paragraphs by the following:
This standard applies to type-tested ASSEMBLIES (TTA) intended for use on construction sites,
i.e. temporary places of work to which the public do not generally have access and where
building construction, installation, repairs, alteration or demolition of property (buildings) or
civil engineering (public works) or excavation or any other similar operations are carried out.
These ASSEMBLIES may be transportable (semi-fixed) or mobile.
This standard does not apply to ASSEMBLIES for use in the administrative centres of construction
sites (offices, cloakrooms, ASSEMBLY rooms, canteens, restaurants, dormitories, toilets, etc.).
The nominal primary voltage and the nominal secondary voltage of transformers incorporated
in ACS shall be within the limits specified in IEC 60439-1.
Requirements for electrical protection provided by equipment manufactured according to this
International Standard shall comply with the requirements given in IEC 60364-7-704.
NOTE This standard may be used as a guide to partially type-tested ASSEMBLIES (PTTA) constructed according to
agreement between manufacturer and user taking into account the nature of supply and/or distribution network and
relevant installation requirements.
1.2 Normative references
This subclause of Part 1 applies with the following additions:
IEC 60068-2-27:1987, Environmental testing − Part 2: Tests - Test Ea and guidance: Shock
IEC 60068-2-42:2003, Environmental testing − Part 2-42: Tests - Test Kc: Sulphur dioxide
test for contacts and connections
IEC 60309-1, Plugs, socket-outlets and couplers for industrial purposes – Part 1: General
requirements
IEC 60309-2, Plugs, socket-outlets and couplers for industrial purposes – Part 2: Dimensional
interchangeability requirements for pin and contact-tube accessories
IEC 60364-4-41:2001, Electrical installations of buildings − Part 4-41: Protection for safety -
Protection against electric shock
IEC 60364-5-53:2001, Electrical installations of buildings – Part 5-53: Selection and erection
of electrical equipment – Isolation, switching and control
IEC 60364-7-704:1989, Electrical installations of buildings − Part 7: Requirements for special
installations or locations - Section 704: Construction and demolition site installations

60439-4  IEC:2004 – 11 –
IEC 60439-1:1999, Low-voltage switchgear and controlgear assemblies – Part 1: Type-tested
and partially type-tested assemblies
IEC 61140:2001, Protection against electric shock – Common aspects for installation and
equipment
IEC 61201:1992, Extra-low voltage (ELV) – Limit values
IEC 61558 (all parts), Safety of power transformers, power supply units and similar devices
IEC 61558-2-23, Safety of power transformers, power supply units and similar devices –
Part 2-23: Particular requirements for transformers for construction sites
2 Definitions
The definitions of Part 1 apply with the following additions and modifications:
2.1.1.2
partially type-tested low-voltage switchgear and controlgear assembly (PTTA)
Not applicable
NOTE See also the note under Clause 1 of this standard.
2.1.101
low-voltage switchgear and controlgear assembly for construction sites (ACS)
combination of one or several transforming or switching devices with associated control,
measuring, signalling, protective and regulating equipment complete with all their internal
electrical and mechanical connections and structural parts (see 2.4), designed and built for
use on all construction sites, indoors and outdoors
2.1.102
metering unit
functional unit equipped with apparatus for metering electrical energy
2.1.103
transformer unit
functional unit consisting mainly of one or several transformers
2.3.1
open-type ASSEMBLY
Not applicable
2.3.2
dead-front ASSEMBLY
Not applicable
2.3.3
enclosed ACS
ACS which is enclosed on all sides

60439-4  IEC:2004 – 13 –
2.3.3.4
box-type ACS
enclosed ACS intended
– either to be mounted on a vertical surface;
– or to stand on a horizontal surface supported by feet or legs (articulated or not) or by a
mounting not forming part of the ACS (see 2.4.2).
2.3.4
busbar trunking system
Not applicable
2.5.1
ASSEMBLY for indoor installation
Not applicable (see 2.1.101)
2.5.2
ASSEMBLY for outdoor installation
Not applicable (see 2.1.101)
2.5.3
stationary ASSEMBLY
Not applicable
2.5.4
movable ASSEMBLY
Not applicable
2.5.101
transportable (or semi-fixed) ACS
ACS intended for use in a place where it is not permanently fixed; its location may vary during
work on the same site. When the equipment is to be moved to another place, it is first
disconnected from the supply
2.5.102
mobile ACS
ACS capable of being moved as work advances on the site, without being disconnected from
the supply
2.7
gangways within ASSEMBLIES
Not applicable
2.101
function of the ACS
2.101.1
incoming supply function
suitability for connection of the construction site assembly either to electricity public supply
network or to the transformer substation or to on-site generator
2.101.2
metering function
suitability for the metering of electrical energy consumed on the site

60439-4  IEC:2004 – 15 –
2.101.3
distribution function
suitability to provide the distribution and protection of electrical supply on the construction site
by means of permanent cabling or socket-outlets
2.101.4
transformer function
suitability to provide means for transformer voltages or to provide measures of electrical
protection
2.102
series of compatible assemblies for construction sites
ACS intended to be interconnected to form an installation or part of an installation
NOTE Details for their requirements are given in 101.1.
3 Classification of ASSEMBLIES
ACS are classified according to
– the function(s) assigned by the manufacturer (see 2.101);
– the external design (see 2.3);
– the mobility (see 2.5.101 and 2.5.102);
– the type of enclosure (see 7.1.1);
– the degree of protection (see 7.2.1);
– the method of mounting, for example fixed or removable parts (see 7.6.3 and 7.6.4);
– the measures for the protection of persons (see 7.4);
– the form of internal separation (see 7.7);
– the types of electrical connections of functional units (see 7.11);
– the resistance to corrosion (see 7.1.101).
4 Electrical characteristics of ASSEMBLIES
4.101 Rated current of an ACS
The rated current of an ACS is that stated by the manufacturer as the rated current of its
incoming circuit. This current shall be carried without the temperature rise of the individual
parts exceeding the limits specified in 7.3 when tested according to 8.2.1.
5 Information to be given regarding the ASSEMBLY
5.1 Nameplates
Each ACS shall be provided with one or more plates marked in a durable manner and located
in a place such that they are visible and legible when the ASSEMBLY is installed. Information
from a) to g) below shall be given on the nameplate. However, if the indication of the name or
trademark of the manufacturer appears on the ACS it need not be given on the nameplate.
Information from h) to s) may, where applicable, be given on the nameplates, in the relevant
documents, on the circuit diagrams or in the manufacturer's catalogues. However, if the
weight of a unit exceeds 30 kg the weight shall be indicated on the nameplate.

60439-4  IEC:2004 – 17 –
a) The manufacturer's name or trademark of the ACS.
NOTE The manufacturer is deemed to be the organisation taking the responsibility for the completed
ASSEMBLY.
b) Type designation or identification number or other means of identification making it
possible to obtain relevant information from the manufacturer.
c) IEC 60439-4.
d) Type of current (and the frequency in the case of a.c.).
e) Rated operational voltages (see 4.1.1).
f) Rated current of ACS (see 4.101).
g) Degree of protection (see 7.2.1).
h) Rated insulation voltage (see 4.1.2) and rated impulse withstand voltage, when declared
by the manufacturer (see 4.1.3).
i) Short-circuit withstand strength (see 7.5.2.1).
l) Service conditions for special use, if different from the usual service conditions as given in
6.1.
m) Type(s) of system(s) earthing for which the ACS is designed (see 7.4.3).
n) Dimensions.
o) Weight, see above.
p) Form of internal separation (see 7.7).
q) Types of electrical connections of functional units (see 7.11).
r) Resistance to corrosion (see 7.1.101), if different from the one corresponding the normal
service conditions.
s) Function(s) (see 2.101).
5.3 Instructions for installation, operation and maintenance
Add the following paragraph:
The manufacturer of the ASSEMBLY should specify on a notice attached to the ASSEMBLY the
other types of ASSEMBLIES which may be connected to it. The notice should indicate whether
the compatibility is based upon the type of system earthing employed and/or on the need for
co-ordination of the electrical protection within the complete installation.
NOTE The manufacturer should furnish the appropriate documentation for the purpose to maintain the protective
measures and the co-ordination of the protective devices within the complete installation.
6 Service conditions
6.1 Normal service conditions
6.1.1 Ambient air temperature
6.1.1.1 Ambient air temperature for indoor installations
Not applicable.
6.1.2 Atmospheric conditions
6.1.2.1 Atmospheric conditions for indoor installations
Not applicable.
60439-4  IEC:2004 – 19 –
6.1.2.3 Pollution degree
Only pollution degrees 3 and 4 are applicable.
7 Design and construction
7.1 Mechanical design
7.1.1 General
Add the following paragraphs:
ACS shall be type-tested low-voltage switchgear and controlgear assemblies (TTA).
All the apparatus shall be placed inside an enclosure fitted with such removable panels, cover
plates or doors as may be required for connection or maintenance with the possible exception
of the items mentioned in 7.2.3, provided that they withstand the service conditions of
Clause 6, 7.1.101 and 7.1.102.
7.1.3.2 Replace the last paragraph by:
All connections for external cables shall be re-wireable or shall be socket-outlets. Socket-
outlets shall conform with the relevant standards and have a current rating of at least 16 A.
NOTE In Australia socket outlets for industrial use with lower current are used.
7.1.3.4 Note 2 is not applicable.
7.1.3.6 Replace by:
Openings in cable entries, cover plates, etc., shall be such
...