This is a preview - click here to buy the full publication
®
INTERNATIONAL
STANDARD
IEC 61439-1
Edition 3.0 2020-05
REDLINE VERSION
colour
inside
Low-voltage switchgear and controlgear assemblies –
Part 1: General rules
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 29.130.20
ISBN 978-2-8322-8337-0
Warning! Make sure that you obtained this publication from an authorized distributor.
® Registered trademark of the International Electrotechnical Commission
This is a preview - click here to buy the full publication
–2–
IEC 61439-1:2020 RLV © IEC 2020
CONTENTS
FOREWORD ........................................................................................................................... 8
INTRODUCTION ................................................................................................................... 10
1
Scope ............................................................................................................................ 11
2
Normative references .................................................................................................... 12
3
Terms and definitions .................................................................................................... 15
3.1
General terms ....................................................................................................... 16
3.2
Constructional units of assemblies ........................................................................ 18
3.3
External design of assemblies ............................................................................... 19
3.4
Structural parts of assemblies ............................................................................... 20
3.5
Conditions of installation of assemblies ................................................................ 21
3.6
Insulation characteristics ...................................................................................... 22
3.7
Protection against electric shock ........................................................................... 25
3.8
Characteristics ...................................................................................................... 29
3.9
Verification ........................................................................................................... 33
3.10 Manufacturer ........................................................................................................ 34
4
Symbols and abbreviations ............................................................................................ 34
5
Interface characteristics ................................................................................................ 35
5.1
General ................................................................................................................. 35
5.2
Voltage ratings ...................................................................................................... 35
5.2.1
Rated voltage (U n ) (of the assembly) ............................................................. 35
5.2.2
Rated operational voltage (U e ) (of a circuit of an assembly) .......................... 35
5.2.3
Rated insulation voltage (U i ) (of a circuit of an assembly) .............................. 36
5.2.4
Rated impulse withstand voltage (U imp ) (of the assembly) ............................ 36
5.3
Current ratings ...................................................................................................... 36
5.3.1
Rated current of an assembly (I nA ) ............................................................... 36
5.3.2
Rated current of a main outgoing circuit (I nc ) ................................................ 37
5.3.3
Group rated current of a main circuit (I ng ) ..................................................... 37
5.3.4
Rated peak withstand current (I pk ) ................................................................ 38
5.3.5
Rated short-time withstand current (I cw ) (of a main circuit of an
assembly) ...................................................................................................... 38
5.3.6
Rated conditional short-circuit current (I cc ) (of an assembly or a circuit
of an assembly) ............................................................................................. 38
5.4
Rated diversity factor (RDF) .................................................................................. 38
5.5
Rated frequency (f n ) ............................................................................................. 39
5.6
Other characteristics ............................................................................................. 39
6
Information .................................................................................................................... 40
6.1
Assembly designation marking .............................................................................. 40
6.2
Documentation ...................................................................................................... 40
6.2.1
Information relating to the assembly .............................................................. 40
6.2.2
Instructions for handling, installation, operation and maintenance .................. 40
6.3
Device and/or component identification ................................................................. 41
7
Service conditions ......................................................................................................... 41
7.1
Normal service conditions ..................................................................................... 41
7.1.1
Climatic conditions ........................................................................................ 41
Ambient air temperature ....................................................................................
Humidity conditions ...........................................................................................
This is a preview - click here to buy the full publication
IEC 61439-1:2020 RLV © IEC 2020
–3–
7.1.2
Pollution degree ............................................................................................ 42
Altitude ..............................................................................................................
7.2
Special service conditions ..................................................................................... 43
7.3
Conditions during transport, storage and installation ............................................. 43
8
Constructional requirements .......................................................................................... 43
8.1
Strength of materials and parts ............................................................................. 43
8.1.1
General ......................................................................................................... 43
8.1.2
Protection against corrosion .......................................................................... 44
8.1.3
Properties of insulating materials ................................................................... 44
8.1.4
Resistance to ultra-violet (UV) radiation ......................................................... 45
8.1.5
Mechanical strength ...................................................................................... 45
8.1.6
Lifting provision ............................................................................................. 45
8.2
Degree of protection provided by an assembly enclosure ...................................... 45
8.2.1
Protection against mechanical impact (IK code) ............................................. 45
8.2.2
Protection against contact with live parts, ingress of solid foreign bodies
and water (IP code) ....................................................................................... 46
8.2.3
Assembly with removable parts...................................................................... 46
8.3
Clearances and creepage distances...................................................................... 47
8.3.1
General ......................................................................................................... 47
8.3.2
Clearances .................................................................................................... 47
8.3.3
Creepage distances ....................................................................................... 48
8.4
Protection against electric shock ........................................................................... 48
8.4.1
General ......................................................................................................... 48
8.4.2
Basic protection ............................................................................................. 48
8.4.3
Fault protection ............................................................................................. 49
8.4.4
Protection by total insulation Additional requirements for class II
assemblies .................................................................................................... 52
8.4.5
Limitation of steady-state touch currents and charge ..................................... 54
8.4.6
Operating and servicing conditions ................................................................ 54
8.5
Incorporation of switching devices and components .............................................. 56
8.5.1
Fixed parts .................................................................................................... 56
8.5.2
Removable parts ........................................................................................... 56
8.5.3
Selection of switching devices and components ............................................. 56
8.5.4
Installation of switching devices and components .......................................... 57
8.5.5
Accessibility .................................................................................................. 57
8.5.6
Barriers ......................................................................................................... 58
8.5.7
Direction of operation and indication of switching positions ............................ 58
8.5.8
Indicator lights and push-buttons ................................................................... 58
8.5.9
Power factor correction banks ....................................................................... 58
8.6
Internal electrical circuits and connections ............................................................ 58
8.6.1
Main circuits .................................................................................................. 58
8.6.2
Auxiliary circuits ............................................................................................ 59
8.6.3
Bare and insulated conductors ....................................................................... 59
8.6.4
Selection and installation of non-protected live conductors to reduce the
possibility of short-circuits ............................................................................. 60
8.6.5
Identification of the conductors of main and auxiliary circuits ......................... 60
8.6.6
Identification of the protective conductor (PE, PEL, PEM, PEN) and of
the neutral conductor (N) and the mid-point conductor (M) of the main
circuits ........................................................................................................... 60
This is a preview - click here to buy the full publication
–4–
IEC 61439-1:2020 RLV © IEC 2020
8.6.7
Conductors in AC circuits passing through ferromagnetic enclosures or
plates ............................................................................................................ 61
8.7
Cooling ................................................................................................................. 61
8.8
Terminals for external conductors cables .............................................................. 61
9
Performance requirements ............................................................................................ 63
9.1
Dielectric properties .............................................................................................. 63
9.1.1
General ......................................................................................................... 63
9.1.2
Power-frequency withstand voltage ............................................................... 63
9.1.3
Impulse withstand voltage ............................................................................. 63
9.1.4
Protection of surge protective devices ........................................................... 64
9.2
Temperature-rise limits ......................................................................................... 64
9.2.1
General ......................................................................................................... 64
9.2.2
Adjustment of rated currents for alternative ambient air temperatures ............ 64
9.3
Short-circuit protection and short-circuit withstand strength .................................. 65
9.3.1
General ......................................................................................................... 65
9.3.2
Information concerning short-circuit withstand strength .................................. 65
9.3.3
Relationship between peak current and short-time current ............................. 66
9.3.4
Coordination of protective devices ................................................................. 66
9.4
Electromagnetic compatibility (EMC) ..................................................................... 66
10 Design verification ......................................................................................................... 67
10.1 General ................................................................................................................. 67
10.2 Strength of materials and parts ............................................................................. 68
10.2.1
General ......................................................................................................... 68
10.2.2
Resistance to corrosion ................................................................................. 68
10.2.3
Properties of insulating materials ................................................................... 70
10.2.4
Resistance to ultraviolet (UV) radiation .......................................................... 72
10.2.5
Lifting ............................................................................................................ 73
10.2.6
Verification of protection against mechanical impact (IK code) ....................... 74
10.2.7
Marking ......................................................................................................... 74
10.2.8
Mechanical operation ..................................................................................... 74
10.3 Degree of protection of assemblies (IP Code) ....................................................... 75
10.4 Clearances and creepage distances...................................................................... 76
10.5 Protection against electric shock and integrity of protective circuits ...................... 76
10.5.1
Effectiveness of the protective circuit General ............................................... 76
10.5.2
Effective earth continuity between the exposed-conductive-parts of the
class I assembly and the protective circuit ..................................................... 76
10.5.3
Short-circuit withstand strength of the protective circuit ................................. 76
10.6 Incorporation of switching devices and components .............................................. 77
10.6.1
General ......................................................................................................... 77
10.6.2
Electromagnetic compatibility ........................................................................ 77
10.7 Internal electrical circuits and connections ............................................................ 77
10.8 Terminals for external conductors ......................................................................... 77
10.9 Dielectric properties .............................................................................................. 78
10.9.1
General ......................................................................................................... 78
10.9.2
Power-frequency withstand voltage ............................................................... 78
10.9.3
Impulse withstand voltage ............................................................................. 79
10.9.4
Testing of enclosures made of insulating material .......................................... 81
10.9.5
External door or cover mounted operating handles of insulating material ....... 81
This is a preview - click here to buy the full publication
IEC 61439-1:2020 RLV © IEC 2020
–5–
10.9.6
Testing of conductors and hazardous live parts covered by insulating
material to provide protection against electric shock ...................................... 81
10.10 Verification of Temperature-rise ........................................................................... 82
10.10.1 General ......................................................................................................... 82
10.10.2 Verification by testing .................................................................................... 82
10.10.3 Derivation of ratings for similar variants Verification by comparison ............... 89
10.10.4 Verification assessment ................................................................................. 92
10.11 Short-circuit withstand strength ............................................................................. 96
10.11.1 General ......................................................................................................... 96
10.11.2 Circuits of assemblies which are exempted from the verification of the
short-circuit withstand strength ...................................................................... 97
10.11.3 Verification by comparison with a reference design – Using a checklist ......... 97
10.11.4 Verification by comparison with a reference design(s) – Using
calculation ..................................................................................................... 97
10.11.5 Verification by test ......................................................................................... 98
10.12 Electromagnetic compatibility (EMC) ................................................................... 104
Mechanical operation ................................................................................................
11 Routine verification ...................................................................................................... 105
11.1
11.2
General ............................................................................................................... 105
Degree of protection against contact with hazardous live parts, ingress of
solid foreign bodies and water of enclosures ....................................................... 105
11.3 Clearances and creepage distances.................................................................... 105
11.4 Protection against electric shock and integrity of protective circuits .................... 106
11.5 Incorporation of built-in components ................................................................... 106
11.6 Internal electrical circuits and connections .......................................................... 106
11.7 Terminals for external conductors ....................................................................... 106
11.8 Mechanical operation .......................................................................................... 106
11.9 Dielectric properties ............................................................................................ 106
11.10 Wiring, operational performance and function .................................................... 107
Annex A (normative) Minimum and maximum cross-section of copper conductors
cables suitable for connection to terminals for external conductors cables (see 8.8) ........... 117
Annex B (normative) Method of calculating the cross-sectional area of protective
conductors with regard to thermal stresses due to currents of short duration ...................... 118
Annex C (informative) User information template ............................................................... 119
Annex D (informative) Design verification .......................................................................... 123
Annex E (informative) Rated diversity factor ...................................................................... 125
Annex F (normative) Measurement of clearances and creepage distances
...................... 138
Annex G (normative) Correlation between the nominal voltage of the supply system
and the rated impulse withstand voltage of the equipment ................................................. 143
Annex H (informative) Operating current and power loss of copper conductors cables ....... 145
Annex I (informative) Thermal equivalent of an intermittent current .................................... 149
Annex K (normative) Protection by electrical separation...........................................................
Annex L (informative) Clearances and creepage distances for North American region .............
Annex M (informative) North American temperature rise limits .................................................
Annex J (normative) Electromagnetic compatibility (EMC).................................................. 150
Annex K (normative) Operating current and power loss of bare copper bars ...................... 163
Annex L (informative) Guidance on verification of temperature-rise .................................... 166
This is a preview - click here to buy the full publication
–6–
IEC 61439-1:2020 RLV © IEC 2020
Annex M (normative) Verification of the short-circuit withstand strength of busbar
structures by comparison with a tested reference design by calculation ............................. 173
Annex N (informative) List of notes concerning certain countries ....................................... 178
Bibliography ........................................................................................................................ 184
Figure E.1 – Typical assembly ............................................................................................ 134
Figure E.2 – Example 1: Table E.1 – Functional unit loading for an assembly
with a rated diversity factor of 0,68 ..................................................................................... 136
Figure E.3 – Example 2: Table E.1 – Functional unit loading for an assembly with a
rated diversity factor of 0,6 in Section B and 0,68 in Section C ........................................... 137
Figure F.1 – Measurement of ribs clearance and creepage distances ................................. 142
Figure I.1 – Example of average heating effect calculation .................................................. 149
Figure J.1 – Examples of ports ........................................................................................... 150
Figure L.1 – Verification of temperature-rise ....................................................................... 172
Figure M.1 – Tested busbar structure (TS) .......................................................................... 174
Figure M.2 – Non tested busbar structure (NTS) ................................................................. 175
Figure M.3 – Angular busbar configuration with supports at the corners .............................. 176
Table 1 – Minimum clearances in air (8.3.2) ....................................................................... 107
Table 2 – Minimum creepage distances (8.3.3) ................................................................... 108
Table 3 – Cross-sectional area of a copper protective conductor (8.4.3.2.2) ....................... 109
Table 4 – Conductor selection and installation requirements (8.6.4) .................................... 109
Table 5 – Minimum terminal capacity for copper protective conductors (PE, PEN (8.8) ....... 110
Table 6 – Temperature-rise limits (9.2) ............................................................................... 110
Table 7 – Values for the factor n a (9.3.3) ............................................................................ 111
Table 8 – Power-frequency withstand voltage for main circuits (10.9.2) .............................. 112
Table 9 – Power-frequency withstand voltage for auxiliary and control circuits (10.9.2) ....... 112
Table 10 – Impulse withstand test voltages (10.9.3) ............................................................ 112
Table 11 – Copper test conductors for rated currents up to 400 A inclusive
(10.10.2.3.2) ....................................................................................................................... 113
Table 12 – Copper test conductors for rated currents from 400 A to 4 000 7 000 A
(10.10.2.3.2) ....................................................................................................................... 114
Table 13 – Short-circuit verification by comparison with reference designs: checklist
(10.5.3.3, 10.11.3 and 10.11.4) ........................................................................................... 115
Table 14 – Relationship between prospective fault current and diameter of copper wire .... 116
Table 15 – Climatic conditions ............................................................................................ 116
Table A.1 – Cross-section of copper conductors cables suitable for connection
to terminals for external conductors cables ......................................................................... 117
Table B.1 – Values of k for insulated protective conductors not incorporated in cables
or bare protective conductors in contact with cable covering ............................................... 118
Table C.1 – User information template ................................................................................ 119
Table D.1 – List of design verifications to be performed ...................................................... 123
Table E.1 – Examples of loading for an assembly ............................................................... 135
Table F.1 – Minimum width of grooves ................................................................................ 138
Table G.1 – Correspondence between the nominal voltage of the supply system and
the equipment rated impulse withstand voltage ................................................................... 144
This is a preview - click here to buy the full publication
IEC 61439-1:2020 RLV © IEC 2020
–7–
Table H.1 – Operating current and power loss of single-core copper cables with a
permissible conductor temperature of 70 °C (ambient temperature inside the assembly:
55 °C) ................................................................................................................................. 145
Table H.2 – Reduction factor k 1 for cables with a permissible conductor temperature
of 70 °C (extract from IEC 60364-5-52:2009, Table B.52.14)............................................... 146
Table J.1 – Tests for EMC immunity for environment A (see J.10.12.2) ............................... 154
Table J.2 – Tests for EMC immunity for environment B (see J.10.12.2) ............................... 155
Table J.3 – Acceptance criteria when electromagnetic disturbances are present ................. 157
Table K.1 – Operating current and power loss of bare copper bars with rectangular
cross-section, run horizontally and arranged with their largest face vertical, frequency
50 Hz to 60 Hz (ambient air temperature inside the assembly: 55 °C, temperature of
the conductor 70 °C) ........................................................................................................... 163
Table K.2 – Factor k 4 for different temperatures of the air inside the assembly and/or
for the conductors ............................................................................................................... 164
This is a preview - click here to buy the full publication
–8–
IEC 61439-1:2020 RLV © IEC 2020
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
LOW-VOLTAGE SWITCHGEAR AND CONTROLGEAR ASSEMBLIES –
Part 1: General rules
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 nongovernmental 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 itself does not provide 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 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.
This redline version of the official IEC Standard allows the user to identify the changes
made to the previous edition. A vertical bar appears in the margin wherever a change
has been made. Additions are in green text, deletions are in strikethrough red text.
This is a preview - click here to buy the full publication
IEC 61439-1:2020 RLV © IEC 2020
–9–
International Standard IEC 61439-1 has been prepared by subcommittee 121B: Low-voltage
switchgear and controlgear assemblies, of IEC technical committee 121: Switchgear and
controlgear and their assemblies for low voltage.
This third edition cancels and replaces the second edition published in 2011. It constitutes a
technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
a) clarification that power electric converter systems, switch mode power supplies,
uninterruptable power supplies and adjustable speed power drive systems are tested to
their particular products standard, but when they are incorporated in assemblies the
incorporation is in accordance with the IEC 61439 series of standards;
b) introduction of a group rated current for circuits within a loaded assembly and the
refocusing of temperature-rise verification on this new characteristic;
c) addition of requirements in respect of DC;
d) introduction of the concept of class I and class II assemblies regarding protection against
electric shock.
The text of this International Standard is based on the following documents:
FDIS
Report on voting
121B/99/FDIS
121B/103/RVD
Full information on the voting for the approval of this International Standard can be found in
the report on voting indicated in the above table.
The reader’s attention is drawn to the fact that Annex N lists all the “in-some-countries”
clauses on differing practices of a less permanent nature regarding this document.
This document has been drafted in accordance with the ISO/IEC Directives, Part 2.
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 document will remain unchanged until the
stability date indicated on the IEC website under "http://webstore.iec.ch" in the data related to
the specific document. At this date, the document will be
•
reconfirmed,
•
withdrawn,
•
replaced by a revised edition, or
•
amended.
IMPORTANT – The 'colour inside' logo on the cover page of this publication indicates
that it contains colours which are considered to be useful for the correct
understanding of its contents. Users should therefore print this document using a
colour printer.
The contents of the corrigendum of December 2021 have been included in this copy.
This is a preview - click here to buy the full publication
– 10 –
IEC 61439-1:2020 RLV © IEC 2020
INTRODUCTION
The purpose of this document is to harmonize as far as practicable all rules and requirements
of a general nature applicable to low-voltage switchgear and controlgear assemblies
(ASSEMBLIES), in order to obtain uniformity of requirements and verification for assemblies and
to avoid the need for verification in other standards. All those requirements for the various
assembly standards which can be considered as general have therefore been gathered in this
document together with specific subjects of wide interest and application, e.g. temperaturerise, dielectric properties, etc.
For each type of low-voltage switchgear and controlgear assembly, only two main standards
are necessary to determine all requirements and the corresponding methods of verification:
–
the basic standard, (this document) referred to as “IEC 61439-1” in the specific standards,
covering the various types of low-voltage switchgear and controlgear assemblies;
–
the specific assembly standard hereinafter also referred to as the relevant assembly
standard.
For a general rule to apply to a specific assembly standard, it should be explicitly referred to
by quoting this document followed by the relevant clause or subclause number e.g.
“IEC 61439-1:2020, 9.1.3”.
A specific assembly standard may not require, and hence need not call up, a general rule
where it is not applicable, or it may can add requirements if the general rule is deemed
inadequate in the particular case, but it may not deviate from it unless there is substantial
technical justification detailed in the specific assembly standard.
Where, in this document, a cross-reference is made to another clause, the reference is to be
taken to apply to that clause as amended by the specific assembly standard, where applicable.
Requirements in this document that are subject to agreement between the assembly
manufacturer and the user are summarized in Annex C (informative). This schedule also
facilitates the supply of information on basic conditions and additional user specifications to
enable proper design, application and utilization of the assembly.
For the new re-structured IEC 61439 series, the following parts are envisaged published:
a) IEC 61439-1: General rules
b) IEC 61439-2: Power switchgear and controlgear assemblies (PSC-assemblies) 1
c) IEC 61439-3: Distribution boards (to supersede IEC 60439-3) intended to be operated by
ordinary persons (DBO)
d) IEC 61439-4: ASSEMBLIES for construction sites (to supersede IEC 60439-4) Particular
requirements for assemblies for construction sites (ACS)
e) IEC 61439-5: Assemblies for power distribution (to supersede IEC 60439-5) in public
networks
f)
IEC 61439-6: Busbar trunking systems (to supersede IEC 60439-2) (busways)
f)
IEC 61439-7: Assemblies for specific applications such as marinas, camping sites, market
squares, electric vehicle charging stations
g) IEC TR 61439-0: Guidance to specifying assemblies.
This list is not exhaustive; additional parts may can be developed as the need arises.
___________
1
IEC 61439-2 includes requirements for assemblies for use in photovoltaic installations.
This is a preview - click here to buy the full publication
IEC 61439-1:2020 RLV © IEC 2020
– 11 –
LOW-VOLTAGE SWITCHGEAR AND CONTROLGEAR ASSEMBLIES –
Part 1: General rules
1
Scope
NOTE 1 Throughout this standard, the term ASSEMBLY (see 3.1.1) is used for a low-voltage switchgear and
controlgear assembly.
This part of IEC 61439 lays down the general definitions and states the service conditions,
construction requirements, technical characteristics and verification requirements for lowvoltage switchgear and controlgear assemblies.
This standard cannot be used alone to specify an ASSEMBLY or used for a purpose of
determining conformity. ASSEMBLIES shall comply with the relevant part of the IEC 61439
series; Parts 2 onwards.
NOTE Throughout this document, the term assembly(s) (see 3.1.1) is used for a low-voltage switchgear and
controlgear assembly(s).
For the purpose of determining assembly conformity, the requirements of the relevant part of
the IEC 61439 series, Part 2 onwards, apply together with the cited requirements of this
document. For assemblies not covered by Part 3 onward, Part 2 applies.
This document applies to low-voltage switchgear and controlgear assemblies (ASSEMBLIES)
only when required by the relevant assembly standard as follows :
–
assemblies for which the rated voltage does not exceed 1 000 V in case of AC or
1 500 V in case of DC;
–
assemblies designed for a nominal frequency of the incoming supply or supplies not
exceeding 1 000 Hz;
–
assemblies intended for indoor and outdoor applications;
–
stationary or movable assemblies with or without an enclosure;
–
assemblies intended for use in connection with the generation, transmission, distribution
and conversion of electric energy, and for the control of electrical energy consuming
equipment.
–
designed for use under special service conditions, for example in ships
and in rail vehicles provided that the other relevant specific requirements are complied
with;
ASSEMBLIES
NOTE 2 Supplementary requirements for ASSEMBLIES in ships are covered by IEC 60092-302.
–
ASSEMBLIES designed for electrical equipment of machines provided that the other
relevant specific requirements are complied with.
NOTE 3 Supplementary requirements for ASSEMBLIES forming part of a machine are covered by the
IEC 60204 series.
This standard applies to all ASSEMBLIES whether they are designed, manufactured and verified
on a one-off basis or fully standardised and manufactured in quantity.
The manufacture and/or assembly may be carried out other than by the original manufacturer
(see 3.10.1).
This document does not apply to individual devices and self-contained components such as
motor starters, fuse switches, power electronic converter systems and equipment (PECS),
switch mode power supplies (SMPS), uninterruptable power supplies (UPS), basic drive
This is a preview - click here to buy the full publication
– 12 –
IEC 61439-1:2020 RLV © IEC 2020
modules (BDM), complete drive modules (CDM), adjustable speed power drives systems
(PDS), and other electronic equipment, etc. which will comply with their relevant product
standards. This document describes the integration of devices and self-contained components
into an assembly or into an empty enclosure forming an assembly.
For some applications involving, for example, explosive atmospheres, functional safety, there
can be a need to comply with the requirements of other standards or legislation in addition to
those specified in the IEC 61439 series.
2
Normative references
The following documents are referred to in the text in such a way that some or all of their
content constitutes requirements 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 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 60073:2002, Basic and safety principles for man-machine interface, marking and
identification – Coding principles for indicators and actuators
IEC 60085:2007, Electrical insulation – Thermal evaluation and designation
IEC 60216 (all parts), Electrical insulating materials – Properties of thermal endurance
IEC 60227-3:1993, Polyvinyl chloride insulated cables of rated voltages up to and including
450/750 V – Part 3: Non-sheathed cables for fixed wiring
IEC 60245-3:1994, Rubber insulated cables – Rated voltages up to and including 450/750 V –
Part 3: Heat resistant silicone insulated cables
IEC 60245-4:1994, Rubber insulated cables – Rated voltages up to and including 450/750 V –
Part 4: Cords and flexible cables
IEC 60364 (all parts), Low-voltage electrical installations
IEC 60364-4-41:2005, Low-voltage electrical installations – Part 4-41: Protection for safety –
Protection against electric shock
IEC 60364-4-41:2005/AMD1:2017
IEC 60364-4-44:2007, Low-voltage electrical installations – Part 4-44: Protection for safety –
Protection against voltage disturbances and electromagnetic disturbances
IEC 60364-5-51:2005, Electrical installations of buildings – Part 5-51: Selection and erection
of electrical equipment – Common rules
IEC 60364-5-52:2009, Low-voltage electrical installations – Part 5-52: Selection and erection
of electrical equipment – Wiring systems
This is a preview - click here to buy the full publication
IEC 61439-1:2020 RLV © IEC 2020
– 13 –
IEC 60364-5-53:2001, Electrical installations of buildings – Part 5-53: Selection and erection
of electrical equipment – Isolation, switching and control
IEC 60364-5-54:2011, Low-voltage electrical installations – Part 5-54: Selection and erection
of electrical equipment – Earthing arrangements and protective conductors
IEC 60439 (all parts), Low-voltage switchgear and controlgear assemblies 2
IEC 60445:20102017, Basic and safety principles for man-machine interface, marking and
identification – Identification of equipment terminals, conductor terminations and conductors
IEC 60447:2004, Basic and safety principles for man-machine interface, marking and
identification – Actuating principles
IEC 60529:1989, Degrees of protection provided by enclosures (IP Code) 3 4
IEC 60529:1989/AMD1:1999
IEC 60529:1989/AMD2:2013
IEC 60664-1:2007, Insulation coordination for equipment within low-voltage systems – Part 1:
Principles, requirements and tests
IEC 60695-2-10:20002013, Fire hazard testing – Part 2-10: Glowing/hot-wire based test
methods – Glow-wire apparatus and common test procedure
IEC 60695-2-11:20002014, Fire hazard testing – Part 2-11: Glowing/hot-wire based test
methods – Glow-wire flammability test method for end-products (GWEPT)
IEC 60695-11-5:2004, Fire hazard testing – Part 11-5: Test flames – Needle-flame test
method – Apparatus, confirmatory test arrangement and guidance
IEC 60695-2-12, Fire hazard testing – Part 2-12: Glowing/hot-wire based test methods –
Glow-wire flammability index (GWFI) test method for materials
IEC 60865-1:19932011, Short-circuit currents – Calculation of effects – Part 1: Definitions and
calculation methods
IEC TR 60890:19872014, A method of temperature-rise assessment by extrapolation for
partially type-tested assemblies (PTTA) verification of low-voltage switchgear and controlgear
assemblies by calculation
IEC 60947-1:2007, Low-voltage switchgear and controlgear – Part 1: General rules
IEC 60947-4-1:2018, Low-voltage switchgear and controlgear – Part 4-1: Contactors and
motor-starters – Electromechanical contactors and motor-starters
IEC 61000-4-2:2008, Electromagnetic compatibility (EMC) –
measurement techniques – Electrostatic discharge immunity test
Part
4-2:
Testing
and
IEC 61000-4-3:2006, Electromagnetic compatibility (EMC) – Part 4-3: Testing and
measurement techniques – Radiated, radio frequency, electromagnetic field immunity test 5 6
___________
2
Withdrawn. The IEC 60439 series has been cancelled and replaced by the IEC 61439 series.
3
There is a consolidated edition 1.1 (2001) that includes IEC 60529 (1989) and its amendment 1 (1999).
4
There is a consolidated document edition 2.2 (2013) that includes IEC 60529 (1989) and its Amendment 1
(1999) and Amendment 2 (2013).
This is a preview - click here to buy the full publication
– 14 –
IEC 61439-1:2020 RLV © IEC 2020
IEC 61000-4-3:2006/AMD1:2007
IEC 61000-4-3:2006/AMD2:2010
IEC 61000-4-4:20042012, Electromagnetic compatibility (EMC) – Part 4-4: Testing and
measurement techniques – Electrical fast transient/burst immunity test
IEC 61000-4-5:20052014, Electromagnetic compatibility (EMC) – Part 4-5: Testing and
measurement techniques – Surge immunity test 7
IEC 61000-4-5:2014/AMD1:2017
IEC 61000-4-6:20082013, Electromagnetic compatibility (EMC) – Part 4-6: Testing and
measurement techniques – Immunity to conducted disturbances, induced by radio-frequency
fields
IEC 61000-4-8:2009, Electromagnetic compatibility (EMC) – Part 4-8:
measurement techniques – Power frequency magnetic field immunity test
Testing
and
IEC 61000-4-11:2004, Electromagnetic compatibility (EMC) – Part 4-11: Testing and
measurement techniques – Voltage dips, short interruptions and voltage variations immunity
tests
IEC 61000-4-11:2004/AMD1:2017
IEC 61000-4-13:2002, Electromagnetic compatibility (EMC) – Part 4-13: Testing and
measurement techniques – Harmonics and interharmonics including mains signalling at a.c.
power port, low-frequency immunity tests 8
IEC 61000-6-3:2006, Electromagnetic compatibility (EMC) – Part 6-3: Generic standards –
Emission standard for residential, commercial and light-industrial environments
IEC 61000-6-3:2006/AMD1:2010
IEC 61000-6-4:20062018, Electromagnetic compatibility (EMC) – Part 6-4: Generic standards
–Emission standard for industrial environments 9
IEC 61082-1:2014, Preparation of documents used in electrotechnology – Part 1: Rules
IEC 61180 (all parts):2016, High-voltage test techniques for low-voltage equipment –
Definitions, test and procedure requirements, test equipment
IEC/TS 61201:2007, Use of conventional touch voltage limits – Application guide
IEC 61439 (all parts), Low-voltage switchgear and controlgear assemblies
IEC 61921:2017, Power capacitors – Low-voltage power factor correction banks
IEC 62208:2011, Empty enclosures for low-voltage switchgear and controlgear assemblies –
General requirements
5
There is a consolidated edition 3.2 (2010) that includes IEC 61000-4-3 (2006) and amendment 1 (2007) and
amendment 2 (2010).
6
There is a consolidated edition 3.2 (2010) that includes IEC 61000-4-3 (2006) and Amendment 1 (2007) and
Amendment 2 (2010).
7
There is consolidated edition 3.1 (2017) that includes IEC 61000-4-5 (2014) and its Amendment 1 (2017).
8
There is a consolidated edition 1.1 (2009) that includes IEC 61000-4-13 (2002) and its amendment 1 (2009).
9
There is a consolidated edition 2.1 (2011) that includes IEC 61000-6-4 (2006) and its amendment 1 (2010).
This is a preview - click here to buy the full publication
IEC 61439-1:2020 RLV © IEC 2020
– 15 –
IEC 62262:2002, Degrees of protection provided by enclosures for electrical equipment
against external mechanical impacts (IK code)
IEC 81346-1:2009, Industrial systems, installations and equipment and industrial products –
Structuring principles and reference designations – Part 1: Basic rules
IEC 81346-2:2019, Industrial systems, installations and equipment and industrial products –
Structuring principles and reference designations – Part 2: Classification of objects and codes
for classes
CISPR 11:20092015, Industrial, scientific and medical equipment – Radio-frequency
disturbance characteristics – Limits and methods of measurement 10
CISPR 11:2015/AMD1:2016
CISPR 11:2015/AMD2:2019
CISPR 22, Information technology equipment – Radio disturbance characteristics – Limits and
methods of measurement
CISPR 32:2015, Electromagnetic
requirements
CISPR 32:2015/AMD1:2019
compatibility
of
multimedia
equipment
–
Emission
ISO 178:20012010, Plastics – Determination of flexural properties
ISO 178:2010/AMD1:2013
ISO 179 (all parts) Plastics – Determination of Charpy impact strength
ISO 179-1:2010, Plastics – Determination of Charpy impact properties – Part 1: Noninstrumented impact test
ISO 179-2:1997, Plastics – Determination of Charpy impact properties – Part 2: Instrumented
impact test
ISO 179-2:1997/AMD1:2011
ISO 2409:20072013, Paints and varnishes – Cross-cut test
ISO 4628-3:20032016, Paints and varnishes – Evaluation of degradation of coatings –
Designation of quantity and size of defects, and of intensity of uniform changes in appearance
– Part 3: Assessment of degree of rusting
ISO 4892-2:20062013, Plastics – Methods of exposure to laboratory light sources – Part 2:
Xenon-arc lamps
ISO 7010, Graphical symbols – Safety colours and safety signs – Registered safety signs
3
Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminological databases for use in standardization at the following
addresses:
___________
10 There is a consolidated edition 5.1 (2010) that includes CISPR 11 (2009) and its amendment 1 (2010).
This is a preview - click here to buy the full publication
®
IEC 61439-1
Edition 3.0 2020-05
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Low-voltage switchgear and controlgear assemblies –
Part 1: General rules
IEC 61439-1:2020-05(en-fr)
Ensembles d’appareillage à basse tension –
Partie 1: Règles générales
This is a preview - click here to buy the full publication
–2–
IEC 61439-1:2020 © IEC 2020
CONTENTS
FOREWORD ........................................................................................................................... 8
INTRODUCTION ................................................................................................................... 10
1
Scope ............................................................................................................................ 11
2
Normative references .................................................................................................... 11
3
Terms and definitions .................................................................................................... 14
3.1
3.2
3.3
3.4
3.5
3.6
3.7
3.8
3.9
3.10
General terms ....................................................................................................... 14
Constructional units of assemblies ........................................................................ 16
External design of assemblies ............................................................................... 18
Structural parts of assemblies ............................................................................... 19
Conditions of installation of assemblies ................................................................ 20
Insulation characteristics ...................................................................................... 20
Protection against electric shock ........................................................................... 23
Characteristics ...................................................................................................... 27
Verification ........................................................................................................... 31
Manufacturer ........................................................................................................ 32
3.11
User ...................................................................................................................... 32
4
Symbols and abbreviations ............................................................................................ 32
5
Interface characteristics ................................................................................................ 33
5.1
General ................................................................................................................. 33
5.2
Voltage ratings ...................................................................................................... 33
5.2.1
Rated voltage (U n ) (of the assembly) ............................................................. 33
5.2.2
Rated operational voltage (U e ) (of a circuit of an assembly)........................... 34
5.2.3
Rated insulation voltage (U i ) (of a circuit of an assembly) .............................. 34
5.2.4
Rated impulse withstand voltage (U imp ) (of the assembly) ............................. 34
5.3
Current ratings ...................................................................................................... 34
5.3.1
Rated current of an assembly (I nA ) ................................................................ 34
5.3.2
Rated current of a main outgoing circuit (I nc ) ................................................. 34
5.3.3
Group rated current of a main circuit (I ng ) ...................................................... 35
5.3.4
Rated peak withstand current (I pk ) ................................................................. 35
5.3.5
Rated short-time withstand current (I cw ) (of a main circuit of an
assembly) ...................................................................................................... 36
5.3.6
Rated conditional short-circuit current (I cc ) (of an assembly or a circuit
of an assembly) ............................................................................................. 36
5.4
Rated diversity factor (RDF) .................................................................................. 36
5.5
Rated frequency (f n ) ............................................................................................. 36
5.6
Other characteristics ............................................................................................. 37
6
Information .................................................................................................................... 37
6.1
Assembly designation marking .............................................................................. 37
6.2
Documentation ...................................................................................................... 37
6.2.1
Information relating to the assembly .............................................................. 37
6.2.2
Instructions for handling, installation, operation and maintenance .................. 38
6.3
Device and/or component identification ................................................................. 38
7
Service conditions ......................................................................................................... 38
7.1
Normal service conditions ..................................................................................... 38
7.1.1
Climatic conditions ........................................................................................ 38
7.1.2
Pollution degree ............................................................................................ 39
This is a preview - click here to buy the full publication
IEC 61439-1:2020 © IEC 2020
–3–
7.2
Special service conditions ..................................................................................... 39
7.3
Conditions during transport, storage and installation ............................................. 40
8
Constructional requirements .......................................................................................... 40
8.1
Strength of materials and parts ............................................................................. 40
8.1.1
General ......................................................................................................... 40
8.1.2
Protection against corrosion .......................................................................... 41
8.1.3
Properties of insulating materials ................................................................... 41
8.1.4
Resistance to ultra-violet (UV) radiation ......................................................... 41
8.1.5
Mechanical strength ...................................................................................... 41
8.1.6
Lifting provision ............................................................................................. 42
8.2
Degree of protection provided by an assembly enclosure ...................................... 42
8.2.1
Protection against mechanical impact (IK code) ............................................. 42
8.2.2
Protection against contact with live parts, ingress of solid foreign bodies
and water (IP code) ....................................................................................... 42
8.2.3
Assembly with removable parts...................................................................... 43
8.3
Clearances and creepage distances...................................................................... 43
8.3.1
General ......................................................................................................... 43
8.3.2
Clearances .................................................................................................... 43
8.3.3
Creepage distances ....................................................................................... 44
8.4
Protection against electric shock ........................................................................... 44
8.4.1
General ......................................................................................................... 44
8.4.2
Basic protection ............................................................................................. 44
8.4.3
Fault protection ............................................................................................. 45
8.4.4
Additional requirements for class II assemblies ............................................. 48
8.4.5
Limitation of steady-state touch currents and charge ..................................... 49
8.4.6
Operating and servicing conditions ................................................................ 49
8.5
Incorporation of switching devices and components .............................................. 50
8.5.1
Fixed parts .................................................................................................... 50
8.5.2
Removable parts ........................................................................................... 51
8.5.3
Selection of switching devices and components ............................................. 51
8.5.4
Installation of switching devices and components .......................................... 51
8.5.5
Accessibility .................................................................................................. 52
8.5.6
Barriers ......................................................................................................... 52
8.5.7
Direction of operation and indication of switching positions ............................ 52
8.5.8
Indicator lights and push-buttons ................................................................... 52
8.5.9
Power factor correction banks ....................................................................... 52
8.6
Internal electrical circuits and connections ............................................................ 52
8.6.1
Main circuits .................................................................................................. 52
8.6.2
Auxiliary circuits ............................................................................................ 53
8.6.3
Bare and insulated conductors ....................................................................... 53
8.6.4
Selection and installation of non-protected live conductors to reduce the
possibility of short-circuits ............................................................................. 55
8.6.5
Identification of the conductors of main and auxiliary circuits ......................... 55
8.6.6
Identification of the protective conductor (PE, PEL, PEM, PEN) and of
the neutral conductor (N) and the mid-point conductor (M) of the main
circuits ........................................................................................................... 55
8.6.7
Conductors in AC circuits passing through ferromagnetic enclosures or
plates ............................................................................................................ 55
8.7
Cooling ................................................................................................................. 55
8.8
Terminals for external cables ................................................................................ 55
This is a preview - click here to buy the full publication
–4–
9
IEC 61439-1:2020 © IEC 2020
Performance requirements ............................................................................................ 57
9.1
Dielectric properties .............................................................................................. 57
9.1.1
General ......................................................................................................... 57
9.1.2
Power-frequency withstand voltage ............................................................... 57
9.1.3
Impulse withstand voltage ............................................................................. 57
9.1.4
Protection of surge protective devices ........................................................... 58
9.2
Temperature-rise limits ......................................................................................... 58
9.2.1
General ......................................................................................................... 58
9.2.2
Adjustment of rated currents for alternative ambient air temperatures ............ 58
9.3
Short-circuit protection and short-circuit withstand strength .................................. 59
9.3.1
General ......................................................................................................... 59
9.3.2
Information concerning short-circuit withstand strength .................................. 59
9.3.3
Relationship between peak current and short-time current ............................. 60
9.3.4
Coordination of protective devices ................................................................. 60
9.4
Electromagnetic compatibility (EMC) ..................................................................... 60
10 Design verification ......................................................................................................... 60
10.1 General ................................................................................................................. 60
10.2 Strength of materials and parts ............................................................................. 62
10.2.1
General ......................................................................................................... 62
10.2.2
Resistance to corrosion ................................................................................. 62
10.2.3
Properties of insulating materials ................................................................... 64
10.2.4
Resistance to ultraviolet (UV) radiation .......................................................... 65
10.2.5
Lifting ............................................................................................................ 66
10.2.6
Verification of protection against mechanical impact (IK code) ....................... 67
10.2.7
Marking ......................................................................................................... 67
10.2.8
Mechanical operation ..................................................................................... 67
10.3 Degree of protection of assemblies (IP Code) ....................................................... 68
10.4 Clearances and creepage distances...................................................................... 69
10.5 Protection against electric shock and integrity of protective circuits ...................... 69
10.5.1
General ......................................................................................................... 69
10.5.2
Effective earth continuity between the exposed-conductive-parts of the
class I assembly and the protective circuit ..................................................... 69
10.5.3
Short-circuit withstand strength of the protective circuit ................................. 69
10.6 Incorporation of switching devices and components .............................................. 70
10.6.1
General ......................................................................................................... 70
10.6.2
Electromagnetic compatibility ........................................................................ 70
10.7 Internal electrical circuits and connections ............................................................ 70
10.8 Terminals for external conductors ......................................................................... 70
10.9 Dielectric properties .............................................................................................. 71
10.9.1
General ......................................................................................................... 71
10.9.2
Power-frequency withstand voltage ............................................................... 71
10.9.3
Impulse withstand voltage ............................................................................. 72
10.9.4
Testing of enclosures made of insulating material .......................................... 74
10.9.5
External door or cover mounted operating handles of insulating material ....... 74
10.9.6
Testing of conductors and hazardous live parts covered by insulating
material to provide protection against electric shock ...................................... 74
10.10 Temperature-rise .................................................................................................. 74
10.10.1 General ......................................................................................................... 74
10.10.2 Verification by testing .................................................................................... 75
This is a preview - click here to buy the full publication
IEC 61439-1:2020 © IEC 2020
–5–
10.10.3 Verification by comparison ............................................................................. 81
10.10.4 Verification assessment ................................................................................. 84
10.11 Short-circuit withstand strength ............................................................................. 86
10.11.1 General ......................................................................................................... 86
10.11.2 Circuits of assemblies which are exempted from the verification of the
short-circuit withstand strength ...................................................................... 86
10.11.3 Verification by comparison with a reference design – Using a checklist ......... 87
10.11.4 Verification by comparison with a reference design(s) – Using
calculation ..................................................................................................... 87
10.11.5 Verification by test ......................................................................................... 87
10.12 Electromagnetic compatibility (EMC) ..................................................................... 93
11 Routine verification ........................................................................................................ 93
11.1
11.2
General ................................................................................................................. 93
Degree of protection against contact with hazardous live parts, ingress of
solid foreign bodies and water of enclosures ......................................................... 94
11.3 Clearances and creepage distances...................................................................... 94
11.4 Protection against electric shock and integrity of protective circuits ...................... 94
11.5 Incorporation of built-in components ..................................................................... 95
11.6 Internal electrical circuits and connections ............................................................ 95
11.7 Terminals for external conductors ......................................................................... 95
11.8 Mechanical operation ............................................................................................ 95
11.9 Dielectric properties .............................................................................................. 95
11.10 Wiring, operational performance and function ....................................................... 95
Annex A (normative) Minimum and maximum cross-section of copper cables suitable
for connection to terminals for external cables (see 8.8) ..................................................... 105
Annex B (normative) Method of calculating the cross-sectional area of protective
conductors with regard to thermal stresses due to currents of short duration ...................... 106
Annex C (informative) User information template ............................................................... 107
Annex D (informative) Design verification .......................................................................... 111
Annex E (informative) Rated diversity factor ...................................................................... 112
E.1
General ............................................................................................................... 112
E.2
Rated diversity factor for outgoing circuits within an assembly ............................ 112
E.2.1
General ....................................................................................................... 112
E.2.2
Example of an assembly with an RDF of 0,68 .............................................. 115
E.2.3
Example of an assembly with RDF declared for each section ....................... 116
Annex F (normative) Measurement of clearances and creepage distances ...................... 117
F.1
Basic principles ................................................................................................... 117
F.2
Use of ribs .......................................................................................................... 117
Annex G (normative) Correlation between the nominal voltage of the supply system
and the rated impulse withstand voltage of the equipment ............................................... 122
Annex H (informative) Operating current and power loss of copper cables ......................... 124
Annex I (informative) Thermal equivalent of an intermittent current .................................... 126
Annex J (normative) Electromagnetic compatibility (EMC).................................................. 127
J.1
General ............................................................................................................... 127
Annex K (normative) Operating current and power loss of bare copper bars ...................... 134
Annex L (informative) Guidance on verification of temperature-rise .................................... 137
L.1
General ............................................................................................................... 137
L.1.1
Principles .................................................................................................... 137
This is a preview - click here to buy the full publication
–6–
IEC 61439-1:2020 © IEC 2020
L.1.2
Current ratings of assemblies ...................................................................... 137
L.2
Temperature-rise limits ....................................................................................... 138
L.3
Test .................................................................................................................... 139
L.3.1
General ....................................................................................................... 139
L.3.2
Method a) – Verification of the complete assembly (10.10.2.3.5) ................. 139
L.3.3
Method b) – Verification considering individual functional units
separately and the complete assembly (10.10.2.3.6) ................................... 139
L.3.4
Method c) – Verification considering individual functional units and the
main and distribution busbars separately as well as the complete
assembly (10.10.2.3.7) ................................................................................ 140
L.4
Verification assessment ...................................................................................... 140
L.4.1
General ....................................................................................................... 140
L.4.2
Single compartment assembly with a rated current (I nA ) not exceeding
630 A ........................................................................................................... 140
L.4.3
Assembly with rated currents (I nA ) not exceeding 1 600 A ........................... 140
L.5
Verification by comparison with a reference design ............................................. 140
Annex M (normative) Verification of the short-circuit withstand strength of busbar
structures by comparison with a reference design by calculation ......................................... 142
M.1
General ............................................................................................................... 142
M.2
Terms and definitions.......................................................................................... 142
M.3
Method of verification .......................................................................................... 143
M.4
Conditions for application .................................................................................... 144
M.4.1
General ....................................................................................................... 144
M.4.2
Peak short-circuit current ............................................................................. 144
M.4.3
Thermal short-circuit strength ...................................................................... 144
M.4.4
Busbar supports .......................................................................................... 144
M.4.5
Busbar connections, equipment connections ............................................... 144
M.4.6
Angular busbar configurations ..................................................................... 144
M.4.7
Calculations with special regard to conductor oscillation .............................. 145
Annex N (informative) List of notes concerning certain countries ....................................... 146
Bibliography ........................................................................................................................ 152
Figure E.1 – Typical assembly ............................................................................................ 113
Figure E.2 – Example 1: Table E.1 – Functional unit loading for an assembly with a
rated diversity factor of 0,68 ............................................................................................... 115
Figure E.3 – Example 2: Table E.1 – Functional unit loading for an assembly with a
rated diversity factor of 0,6 in Section B and 0,68 in Section C ........................................... 116
Figure F.1 – Measurement of clearance and creepage distances ........................................ 121
Figure I.1 – Example of average heating effect calculation .................................................. 126
Figure J.1 – Examples of ports ........................................................................................... 127
Figure L.1 – Verification of temperature-rise ....................................................................... 141
Figure M.1 – Tested busbar structure (TS) .......................................................................... 142
Figure M.2 – Non tested busbar structure (NTS) ................................................................. 143
Figure M.3 – Angular busbar configuration with supports at the corners .............................. 144
Table 1 – Minimum clearances in air (8.3.2) .......................................................................... 96
Table 2 – Minimum creepage distances (8.3.3) ..................................................................... 97
Table 3 – Cross-sectional area of a copper protective conductor (8.4.3.2.2) ......................... 98
This is a preview - click here to buy the full publication
IEC 61439-1:2020 © IEC 2020
–7–
Table 4 – Conductor selection and installation requirements (8.6.4) ...................................... 98
Table 5 – Minimum terminal capacity for copper protective conductors (PE) (8.8) ................. 98
Table 6 – Temperature-rise limits (9.2) ................................................................................. 99
Table 7 – Values for the factor n (9.3.3) .............................................................................. 100
Table 8 – Power-frequency withstand voltage for main circuits (10.9.2) .............................. 100
Table 9 – Power-frequency withstand voltage for auxiliary circuits (10.9.2) ......................... 100
Table 10 – Impulse withstand test voltages (10.9.3) ............................................................ 100
Table 11 – Copper test conductors for rated currents up to 400 A inclusive (10.10.2.3.2) ... 101
Table 12 – Copper test conductors for rated currents from 400 A to 7 000 A
(10.10.2.3.2) ....................................................................................................................... 102
Table 13 – Short-circuit verification by comparison with reference designs: checklist
(10.5.3.3, 10.11.3 and 10.11.4) ........................................................................................... 103
Table 14 – Relationship between prospective fault current and diameter of copper wire .... 104
Table 15 – Climatic conditions ............................................................................................ 104
Table A.1 – Cross-section of copper cables suitable for connection to terminals for
external cables ................................................................................................................... 105
Table B.1 – Values of k for insulated protective conductors not incorporated in cables
or bare protective conductors in contact with cable covering ............................................... 106
Table C.1 – User information template ................................................................................ 107
Table D.1 – List of design verifications to be performed ...................................................... 111
Table E.1 – Examples of loading for an assembly ............................................................... 114
Table F.1 – Minimum width of grooves ................................................................................ 117
Table G.1 – Correspondence between the nominal voltage of the supply system and
the equipment rated impulse withstand voltage ................................................................... 123
Table H.1 – Operating current and power loss of single-core copper cables with a
permissible conductor temperature of 70 °C (ambient temperature inside the assembly:
55 °C) ................................................................................................................................. 124
Table H.2 – Reduction factor k 1 for cables with a permissible conductor temperature
of 70 °C (extract from IEC 60364-5-52:2009, Table B.52.14)............................................... 125
Table J.1 – Tests for EMC immunity for environment A (see J.10.12.2) ............................... 131
Table J.2 – Tests for EMC immunity for environment B (see J.10.12.2) ............................... 132
Table J.3 – Acceptance criteria when electromagnetic disturbances are present ................. 133
Table K.1 – Operating current and power loss of bare copper bars with rectangular
cross-section, run horizontally and arranged with their largest face vertical, frequency
50 Hz to 60 Hz (ambient air temperature inside the assembly: 55 °C, temperature of
the conductor 70 °C) ........................................................................................................... 134
Table K.2 – Factor k 4 for different temperatures of the air inside the assembly and/or
for the conductors ............................................................................................................... 135
This is a preview - click here to buy the full publication
–8–
IEC 61439-1:2020 © IEC 2020
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
LOW-VOLTAGE SWITCHGEAR AND CONTROLGEAR ASSEMBLIES –
Part 1: General rules
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 nongovernmental 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 itself does not provide 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 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 61439-1 has been prepared by subcommittee 121B: Low-voltage
switchgear and controlgear assemblies, of IEC technical committee 121: Switchgear and
controlgear and their assemblies for low voltage.
This third edition cancels and replaces the second edition published in 2011. It constitutes a
technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
a) clarification that power electric converter systems, switch mode power supplies,
uninterruptable power supplies and adjustable speed power drive systems are tested to
their particular products standard, but when they are incorporated in assemblies the
incorporation is in accordance with the IEC 61439 series of standards;
b) introduction of a group rated current for circuits within a loaded assembly and the
refocusing of temperature-rise verification on this new characteristic;
This is a preview - click here to buy the full publication
IEC 61439-1:2020 © IEC 2020
–9–
c) addition of requirements in respect of DC;
d) introduction of the concept of class I and class II assemblies regarding protection against
electric shock.
The text of this International Standard is based on the following documents:
FDIS
Report on voting
121B/99/FDIS
121B/103/RVD
Full information on the voting for the approval of this International Standard can be found in
the report on voting indicated in the above table.
The reader’s attention is drawn to the fact that Annex N lists all the “in-some-countries”
clauses on differing practices of a less permanent nature regarding this document.
This document has been drafted in accordance with the ISO/IEC Directives, Part 2.
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 document will remain unchanged until the
stability date indicated on the IEC website under "http://webstore.iec.ch" in the data related to
the specific document. At this date, the document will be
•
reconfirmed,
•
withdrawn,
•
replaced by a revised edition, or
•
amended.
The contents of the corrigendum of December 2021 have been included in this copy.
This is a preview - click here to buy the full publication
– 10 –
IEC 61439-1:2020 © IEC 2020
INTRODUCTION
The purpose of this document is to harmonize as far as practicable all rules and requirements
of a general nature applicable to low-voltage switchgear and controlgear assemblies , in order
to obtain uniformity of requirements and verification for assemblies and to avoid the need for
verification in other standards. All those requirements for the various assembly standards
which can be considered as general have therefore been gathered in this document together
with specific subjects of wide interest and application, e.g. temperature-rise, dielectric
properties, etc.
For each type of low-voltage switchgear and controlgear assembly, only two main standards
are necessary to determine all requirements and the corresponding methods of verification:
–
the basic standard, (this document) referred to as “IEC 61439-1” in the specific standards,
covering the various types of low-voltage switchgear and controlgear assemblies;
–
the specific assembly standard hereinafter also referred to as the relevant assembly
standard.
For a general rule to apply to a specific assembly standard, it should be explicitly referred to
by quoting this document followed by the relevant clause or subclause number e.g.
“IEC 61439-1:2020, 9.1.3”.
A specific assembly standard may not require, and hence need not call up, a general rule
where it is not applicable, or it can add requirements if the general rule is deemed inadequate
in the particular case, but it may not deviate from it unless there is substantial technical
justification detailed in the specific assembly standard.
Where, in this document, a cross-reference is made to another clause, the reference is to be
taken to apply to that clause as amended by the specific assembly standard, where applicable.
Requirements in this document that are subject to agreement between the assembly
manufacturer and the user are summarized in Annex C (informative). This schedule also
facilitates the supply of information on basic conditions and additional user specifications to
enable proper design, application and utilization of the assembly.
For the IEC 61439 series, the following parts are published:
a) IEC 61439-1: General rules
b) IEC 61439-2: Power switchgear and controlgear assemblies (PSC-assemblies) 1
c) IEC 61439-3: Distribution boards intended to be operated by ordinary persons (DBO)
d) IEC 61439-4: Particular requirements for assemblies for construction sites (ACS)
e) IEC 61439-5: Assemblies for power distribution in public networks
f)
IEC 61439-6: Busbar trunking systems (busways)
g) IEC 61439-7: Assemblies for specific applications such as marinas, camping sites, market
squares, electric vehicle charging stations
h) IEC TR 61439-0: Guidance to specifying assemblies.
This list is not exhaustive; additional parts can be developed as the need arises.
___________
1
IEC 61439-2 includes requirements for assemblies for use in photovoltaic installations.
This is a preview - click here to buy the full publication
IEC 61439-1:2020 © IEC 2020
– 11 –
LOW-VOLTAGE SWITCHGEAR AND CONTROLGEAR ASSEMBLIES –
Part 1: General rules
1
Scope
This part of IEC 61439 lays down the general definitions and service conditions, construction
requirements, technical characteristics and verification requirements for low-voltage
switchgear and controlgear assemblies.
NOTE Throughout this document, the term assembly(s) (see 3.1.1) is used for a low-voltage switchgear and
controlgear assembly(s).
For the purpose of determining assembly conformity, the requirements of the relevant part of
the IEC 61439 series, Part 2 onwards, apply together with the cited requirements of this
document. For assemblies not covered by Part 3 onward, Part 2 applies.
This document applies to assemblies only when required by the relevant assembly standard
as follows :
–
assemblies for which the rated voltage does not exceed 1 000 V AC or
1 500 V DC;
–
assemblies designed for a nominal frequency of the incoming supply or supplies not
exceeding 1 000 Hz;
–
assemblies intended for indoor and outdoor applications;
–
stationary or movable assemblies with or without an enclosure;
–
assemblies intended for use in connection with the generation, transmission, distribution
and conversion of electric energy, and for the control of electrical energy consuming
equipment.
This document does not apply to individual devices and self-contained components such as
motor starters, fuse switches, power electronic converter systems and equipment (PECS),
switch mode power supplies (SMPS), uninterruptable power supplies (UPS), basic drive
modules (BDM), complete drive modules (CDM), adjustable speed power drives systems
(PDS), and other electronic equipment which comply with their relevant product standards.
This document describes the integration of devices and self-contained components into an
assembly or into an empty enclosure forming an assembly.
For some applications involving, for example, explosive atmospheres, functional safety, there
can be a need to comply with the requirements of other standards or legislation in addition to
those specified in the IEC 61439 series.
2
Normative references
The following documents are referred to in the text in such a way that some or all of their
content constitutes requirements 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 environmental testing procedures – Part 2-11: Tests – Test Ka:
Salt mist
This is a preview - click here to buy the full publication
– 12 –
IEC 61439-1:2020 © IEC 2020
IEC 60068-2-30:2005, Environmental testing – Part 2-30: Tests – Test Db: Damp heat, cyclic
(12 h + 12 h cycle)
IEC 60073:2002, Basic and safety principles for man-machine interface, marking and
identification – Coding principles for indicators and actuators
IEC 60085:2007, Electrical insulation – Thermal evaluation and designation
IEC 60364 (all parts), Low-voltage electrical installations
IEC 60364-4-41:2005, Low-voltage electrical installations – Part 4-41: Protection for safety –
Protection against electric shock
IEC 60364-4-41:2005/AMD1:2017
IEC 60364-5-51:2005, Electrical installations of buildings – Part 5-51: Selection and erection
of electrical equipment – Common rules
IEC 60364-5-52:2009, Low-voltage electrical installations – Part 5-52: Selection and erection
of electrical equipment – Wiring systems
IEC 60439 (all parts), Low-voltage switchgear and controlgear assemblies 2
IEC 60445:2017, Basic and safety principles for man-machine interface, marking and
identification – Identification of equipment terminals, conductor terminations and conductors
IEC 60447:2004, Basic and safety principles for man-machine interface, marking and
identification – Actuating principles
IEC 60529:1989, Degrees of protection provided by enclosures (IP Code) 3
IEC 60529:1989/AMD1:1999
IEC 60529:1989/AMD2:2013
IEC 60695-2-10:2013, Fire hazard testing – Part 2-10: Glowing/hot-wire based test methods –
Glow-wire apparatus and common test procedure
IEC 60695-2-11:2014, Fire hazard testing – Part 2-11: Glowing/hot-wire based test methods –
Glow-wire flammability test method for end-products (GWEPT)
IEC 60695-2-12, Fire hazard testing – Part 2-12: Glowing/hot-wire based test methods –
Glow-wire flammability index (GWFI) test method for materials
IEC 60865-1:2011, Short-circuit currents – Calculation of effects – Part 1: Definitions and
calculation methods
IEC TR 60890:2014, A method of temperature-rise verification of low-voltage switchgear and
controlgear assemblies by calculation
IEC 60947-4-1:2018, Low-voltage switchgear and controlgear – Part 4-1: Contactors and
motor-starters – Electromechanical contactors and motor-starters
___________
2
Withdrawn. The IEC 60439 series has been cancelled and replaced by the IEC 61439 series.
3
There is a consolidated document edition 2.2 (2013) that includes IEC 60529 (1989) and its Amendment 1
(1999) and Amendment 2 (2013).
This is a preview - click here to buy the full publication
IEC 61439-1:2020 © IEC 2020
– 13 –
IEC 61000-4-2:2008, Electromagnetic compatibility (EMC) –
measurement techniques – Electrostatic discharge immunity test
Part
4-2:
Testing
and
IEC 61000-4-3:2006, Electromagnetic compatibility (EMC) – Part 4-3: Testing and
measurement techniques – Radiated, radio frequency, electromagnetic field immunity test 4
IEC 61000-4-3:2006/AMD1:2007
IEC 61000-4-3:2006/AMD2:2010
IEC 61000-4-4:2012, Electromagnetic compatibility (EMC) – Part
measurement techniques – Electrical fast transient/burst immunity test
4-4:
Testing
and
IEC 61000-4-5:2014, Electromagnetic compatibility
measurement techniques – Surge immunity test 5
IEC 61000-4-5:2014/AMD1:2017
4-5:
Testing
and
(EMC)
–
Part
IEC 61000-4-6:2013, Electromagnetic compatibility (EMC) – Part 4-6: Testing and
measurement techniques – Immunity to conducted disturbances, induced by radio-frequency
fields
IEC 61000-4-8:2009, Electromagnetic compatibility (EMC) – Part 4-8:
measurement techniques – Power frequency magnetic field immunity test
Testing
and
IEC 61000-4-11:2004, Electromagnetic compatibility (EMC) – Part 4-11: Testing and
measurement techniques – Voltage dips, short interruptions and voltage variations immunity
tests
IEC 61000-4-11:2004/AMD1:2017
IEC 61000-6-3:2006, Electromagnetic compatibility (EMC) – Part 6-3: Generic standards –
Emission standard for residential, commercial and light-industrial environments
IEC 61000-6-3:2006/AMD1:2010
IEC 61000-6-4:2018, Electromagnetic compatibility (EMC) – Part 6-4: Generic standards –
Emission standard for industrial environments
IEC 61082-1:2014, Preparation of documents used in electrotechnology – Part 1: Rules
IEC 61180:2016, High-voltage test techniques for low-voltage equipment – Definitions, test
and procedure requirements, test equipment
IEC 61439 (all parts), Low-voltage switchgear and controlgear assemblies
IEC 61921:2017, Power capacitors – Low-voltage power factor correction banks
IEC 62208:2011, Empty enclosures for low-voltage switchgear and controlgear assemblies –
General requirements
IEC 81346-1:2009, Industrial systems, installations and equipment and industrial products –
Structuring principles and reference designations – Part 1: Basic rules
IEC 81346-2:2019, Industrial systems, installations and equipment and industrial products –
Structuring principles and reference designations – Part 2: Classification of objects and codes
for classes
___________
4
There is a consolidated edition 3.2 (2010) that includes IEC 61000-4-3 (2006) and Amendment 1 (2007) and
Amendment 2 (2010).
5
There is consolidated edition 3.1 (2017) that includes IEC 61000-4-5 (2014) and its Amendment 1 (2017).
This is a preview - click here to buy the full publication
– 14 –
IEC 61439-1:2020 © IEC 2020
CISPR 11:2015, Industrial, scientific and medical equipment – Radio-frequency disturbance
characteristics – Limits and methods of measurement
CISPR 11:2015/AMD1:2016
CISPR 11:2015/AMD2:2019
CISPR 32:2015, Electromagnetic
requirements
CISPR 32:2015/AMD1:2019
compatibility
of
multimedia
equipment
–
Emission
ISO 178:2010, Plastics – Determination of flexural properties
ISO 178:2010/AMD1:2013
ISO 179-1:2010, Plastics – Determination of Charpy impact properties – Part 1: Noninstrumented impact test
ISO 179-2:1997, Plastics – Determination of Charpy impact properties – Part 2: Instrumented
impact test
ISO 179-2:1997/AMD1:2011
ISO 2409:2013, Paints and varnishes – Cross-cut test
ISO 4628-3:2016, Paints and varnishes – Evaluation of degradation of coatings – Designation
of quantity and size of defects, and of intensity of uniform changes in appearance – Part 3:
Assessment of degree of rusting
ISO 4892-2:2013, Plastics – Methods of exposure to laboratory light sources – Part 2: Xenonarc lamps
ISO 7010, Graphical symbols – Safety colours and safety signs – Registered safety signs
3
Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminological databases for use in standardization at the following
addresses:
•
IEC Electropedia: available at http://www.electropedia.org/
•
ISO Online browsing platform: available at http://www.iso.org/obp
3.1
General terms
3.1.1
low-voltage switchgear and controlgear assembly
assembly
combination of one or more low-voltage switching devices together with associated control,
measuring, signalling, protective, regulating equipment, with all the internal electrical and
mechanical interconnections and structural parts, as defined by the original manufacturer,
which can be assembled in accordance with the original manufacturer’s instructions
Note 1 to entry: Throughout this document, the term assembly(s) is used for a low-voltage switchgear and
controlgear assembly(s)
Note 2 to entry: The term “switching device” includes mechanical switching devices and semiconductor switching
devices, e.g. soft starters, semiconductor relays, frequency converters. The auxiliary circuits may also include
electro-mechanical devices, e.g. control relays, terminal blocks, and electronic devices, e.g. electronic motor
control devices, electronic measurement and protection devices, bus communication, programmable logic controller
systems.
This is a preview - click here to buy the full publication
– 156 –
IEC 61439-1:2020 © IEC 2020
SOMMAIRE
AVANT-PROPOS ................................................................................................................ 162
INTRODUCTION ................................................................................................................. 164
1
Domaine d’application ................................................................................................. 166
2
Références normatives ................................................................................................ 166
3
Termes et définitions ................................................................................................... 169
3.1
Termes généraux ................................................................................................ 170
3.2
Unités de construction des ensembles ................................................................ 172
3.3
Présentation extérieure des ensembles ............................................................... 173
3.4
Eléments de structure des ensembles ................................................................. 174
3.5
Conditions d’installation des ensembles .............................................................. 175
3.6
Caractéristiques d’isolement ............................................................................... 176
3.7
Protection contre les chocs électriques ............................................................... 179
3.8
Caractéristiques .................................................................................................. 183
3.9
Vérification.......................................................................................................... 187
3.10 Constructeur ....................................................................................................... 188
3.11 Utilisateur ........................................................................................................... 188
4
Symboles et abréviations ............................................................................................. 188
5
Caractéristiques d’interface ......................................................................................... 190
5.1
Généralités ......................................................................................................... 190
5.2
Caractéristiques assignées de tension ................................................................ 190
5.2.1
Tension assignée (U n ) (de l’ensemble) ........................................................ 190
5.2.2
Tension assignée d’emploi (U e ) (d’un circuit d’un ensemble) ....................... 190
5.2.3
Tension assignée d’isolement (U i ) (d’un circuit d’un ensemble) ................... 190
5.2.4
Tension assignée de tenue aux chocs (U imp ) (de l’ensemble) ...................... 190
5.3
Caractéristiques assignées de courant ................................................................ 190
5.3.1
Courant assigné d’un ensemble (I nA ) ........................................................... 190
5.3.2
Courant assigné d’un circuit principal de départ (I nc ) ................................... 191
5.3.3
Courant assigné de groupe d’un circuit principal (I ng ) .................................. 191
5.3.4
Courant assigné de crête admissible (I pk ) .................................................... 192
5.3.5
Courant assigné de courte durée admissible (I cw ) (d’un circuit principal
d’un ensemble) ............................................................................................ 192
5.3.6
Courant conditionnel de court-circuit assigné (I cc ) (d’un ensemble ou
d’un circuit d’un ensemble) .......................................................................... 192
5.4
Facteur de diversité assigné (RDF) ..................................................................... 192
5.5
Fréquence assignée (f n ) ...................................................................................... 193
5.6
Autres caractéristiques ....................................................................................... 193
6
Informations ................................................................................................................ 194
6.1
Marquage pour l’identification des ensembles ..................................................... 194
6.2
Documentation .................................................................................................... 194
6.2.1
Renseignements concernant l’ensemble ...................................................... 194
6.2.2
Instructions de manutention, d’installation, d’exploitation et de
maintenance ................................................................................................ 194
6.3
Identification des appareils et/ou des composants .............................................. 195
7
Conditions d’emploi ..................................................................................................... 195
7.1
Conditions normales d’emploi ............................................................................. 195
7.1.1
Conditions climatiques ................................................................................. 195
This is a preview - click here to buy the full publication
IEC 61439-1:2020 © IEC 2020
– 157 –
7.1.2
Degré de pollution ....................................................................................... 195
7.2
Conditions spéciales d’emploi ............................................................................. 196
7.3
Conditions au cours du transport, du stockage et de l’installation ........................ 196
8
Exigences de construction ........................................................................................... 197
8.1
Résistance des matériaux et des parties ............................................................. 197
8.1.1
Généralités .................................................................................................. 197
8.1.2
Protection contre la corrosion ...................................................................... 197
8.1.3
Propriétés des matériaux isolants ................................................................ 197
8.1.4
Résistance aux rayonnements ultraviolets (UV) ........................................... 198
8.1.5
Résistance mécanique ................................................................................. 198
8.1.6
Dispositifs de levage .................................................................................... 198
8.2
Degré de protection procuré par l’enveloppe d’un ensemble ............................... 198
8.2.1
Protection contre les impacts mécaniques (code IK) .................................... 199
8.2.2
Protection contre les contacts avec des parties actives, contre la
pénétration de corps étrangers solides et d’eau (code IP) ............................ 199
8.2.3
Ensemble avec parties amovibles ................................................................ 199
8.3
Distances d’isolement et lignes de fuite .............................................................. 200
8.3.1
Généralités .................................................................................................. 200
8.3.2
Distances d’isolement .................................................................................. 200
8.3.3
Lignes de fuite ............................................................................................. 200
8.4
Protection contre les chocs électriques ............................................................... 201
8.4.1
Généralités .................................................................................................. 201
8.4.2
Protection principale .................................................................................... 201
8.4.3
Protection en cas de défaut ......................................................................... 202
8.4.4
Exigences supplémentaires pour les ensembles de classe II ....................... 205
8.4.5
Limitation du courant permanent et de la charge.......................................... 206
8.4.6
Conditions d’exploitation et d’entretien ........................................................ 207
8.5
Intégration des appareils de connexion et des composants ................................. 208
8.5.1
Parties fixes................................................................................................. 208
8.5.2
Parties amovibles ........................................................................................ 208
8.5.3
Choix des appareils de connexion et des composants ................................. 209
8.5.4
Installation des appareils de connexion et des composants ......................... 209
8.5.5
Accessibilité ................................................................................................ 209
8.5.6
Barrières ..................................................................................................... 210
8.5.7
Sens de manœuvre et indication des positions de commande ..................... 210
8.5.8
Voyants lumineux et boutons-poussoirs ....................................................... 210
8.5.9
Batteries de compensation du facteur de puissance .................................... 210
8.6
Circuits électriques internes et connexions ......................................................... 210
8.6.1
Circuits principaux ....................................................................................... 210
8.6.2
Circuits auxiliaires ....................................................................................... 211
8.6.3
Conducteurs nus et isolés ............................................................................ 211
8.6.4
Choix et installation de conducteurs actifs non protégés pour réduire la
possibilité de courts-circuits ......................................................................... 213
8.6.5
Identification des conducteurs des circuits principaux et auxiliaires ............. 213
8.6.6
Identification du conducteur de protection (PE, PEL, PEM, PEN), du
conducteur neutre (N) et du conducteur de point milieu (M) des circuits
principaux .................................................................................................... 213
8.6.7
Conducteurs dans des circuits à courant alternatif traversant des
enveloppes ou des plaques ferromagnétiques ............................................. 213
8.7
Refroidissement .................................................................................................. 213
This is a preview - click here to buy the full publication
– 158 –
IEC 61439-1:2020 © IEC 2020
8.8
Bornes pour câbles externes ............................................................................... 214
9
Exigences relatives aux performances ......................................................................... 215
9.1
Propriétés diélectriques ...................................................................................... 215
9.1.1
Généralités .................................................................................................. 215
9.1.2
Tension de tenue à fréquence industrielle .................................................... 216
9.1.3
Tension de tenue aux chocs ........................................................................ 216
9.1.4
Protection des parafoudres .......................................................................... 216
9.2
Limites d’échauffement ....................................................................................... 216
9.2.1
Généralités .................................................................................................. 216
9.2.2
Ajustement des courants assignés pour d’autres températures de l’air
ambiant ....................................................................................................... 217
9.3
Protection contre les courts-circuits et tenue aux courts-circuits ......................... 217
9.3.1
Généralités .................................................................................................. 217
9.3.2
Indications concernant la tenue aux courts-circuits ...................................... 218
9.3.3
Relation entre le courant de crête et le courant de courte durée .................. 218
9.3.4
Coordination des dispositifs de protection .................................................... 218
9.4
Compatibilité électromagnétique (CEM) .............................................................. 219
10 Vérification de la conception ........................................................................................ 219
10.1 Généralités ......................................................................................................... 219
10.2 Résistance des matériaux et des parties ............................................................. 220
10.2.1
Généralités .................................................................................................. 220
10.2.2
Tenue à la corrosion .................................................................................... 221
10.2.3
Propriétés des matériaux isolants ................................................................ 222
10.2.4
Résistance aux rayonnements ultraviolets (UV) ........................................... 224
10.2.5
Levage ........................................................................................................ 225
10.2.6
Vérification de la protection contre les impacts mécaniques (code IK) ......... 226
10.2.7
Marquage .................................................................................................... 226
10.2.8
Fonctionnement mécanique ......................................................................... 226
10.3 Degré de protection des ensembles (code IP) ..................................................... 227
10.4 Distances d’isolement et lignes de fuite .............................................................. 228
10.5 Protection contre les chocs électriques et intégrité des circuits de protection ...... 228
10.5.1
Généralités .................................................................................................. 228
10.5.2
Continuité du circuit de terre entre les masses de l’ensemble de
classe I et le circuit de protection................................................................. 228
10.5.3
Tenue aux courts-circuits du circuit de protection ........................................ 228
10.6 Intégration des appareils de connexion et des composants ................................. 229
10.6.1
Généralités .................................................................................................. 229
10.6.2
Compatibilité électromagnétique .................................................................. 229
10.7 Circuits électriques internes et connexions ......................................................... 229
10.8 Bornes pour conducteurs externes ...................................................................... 229
10.9 Propriétés diélectriques ...................................................................................... 230
10.9.1
Généralités .................................................................................................. 230
10.9.2
Tension de tenue à fréquence industrielle .................................................... 230
10.9.3
Tension de tenue aux chocs ........................................................................ 231
10.9.4
Essais des enveloppes en matériau isolant .................................................. 233
10.9.5
Les poignées de manœuvre externes en matériau isolant montées sur
portes ou panneaux ..................................................................................... 233
10.9.6
Essais des conducteurs et des parties actives dangereuses recouverts
de matériau isolant pour offrir une protection contre les chocs
électriques ................................................................................................... 234
This is a preview - click here to buy the full publication
IEC 61439-1:2020 © IEC 2020
– 159 –
10.10 Echauffement ...................................................................................................... 234
10.10.1 Généralités .................................................................................................. 234
10.10.2 Vérification par des essais ........................................................................... 234
10.10.3 Vérification par comparaison ....................................................................... 241
10.10.4 Evaluation de vérification ............................................................................. 244
10.11 Tenue aux courts-circuits .................................................................................... 247
10.11.1 Généralités .................................................................................................. 247
10.11.2 Circuits des ensembles exemptés de la vérification de la tenue aux
courts-circuits .............................................................................................. 247
10.11.3 Vérification par comparaison avec une conception de référence –
Utilisation d’une liste de contrôle ................................................................. 248
10.11.4 Vérification par comparaison avec une ou plusieurs conceptions de
référence – Utilisation de calculs ................................................................. 248
10.11.5 Vérification par essai ................................................................................... 248
10.12 Compatibilité électromagnétique (CEM) .............................................................. 255
11 Vérification individuelle de série .................................................................................. 255
11.1
11.2
Généralités ......................................................................................................... 255
Degré de protection des enveloppes contre les contacts avec des parties
actives dangereuses, contre la pénétration de corps étrangers solides et
d’eau .................................................................................................................. 256
11.3 Distances d’isolement et lignes de fuite .............................................................. 256
11.4 Protection contre les chocs électriques et intégrité des circuits de protection ...... 256
11.5 Intégration de composants incorporés ................................................................. 256
11.6 Circuits électriques internes et connexions ......................................................... 256
11.7 Bornes pour conducteurs externes ...................................................................... 257
11.8 Fonctionnement mécanique ................................................................................ 257
11.9 Propriétés diélectriques ...................................................................................... 257
11.10 Câblage, fonctionnement électrique et fonction ................................................... 257
Annexe A (normative) Sections minimale et maximale des câbles de cuivre convenant
au raccordement aux bornes pour câbles externes (voir 8.8) .............................................. 268
Annexe B (normative) Méthode de calcul de la section des conducteurs de protection
par rapport aux contraintes thermiques occasionnées par les courants de courte durée ..... 269
Annexe C (informative) Modèle d’information de l’utilisateur .............................................. 270
Annexe D (informative) Vérification de la conception ......................................................... 274
Annexe E (informative) Facteur de diversité assigné .......................................................... 276
E.1
E.2
Généralités ......................................................................................................... 276
Facteur de diversité assigné pour circuits de départ à l’intérieur d’un
ensemble ............................................................................................................ 276
E.2.1
Généralités .................................................................................................. 276
E.2.2
Exemple d’un ensemble avec un RDF de 0,68 ............................................. 279
E.2.3
Exemple d’un ensemble avec un RDF déclaré pour chaque colonne ............ 280
Annexe F (normative) Mesure des distances d’isolement et des lignes de fuite ................. 281
F.1
Principes de base ............................................................................................... 281
F.2
Emploi des nervures ........................................................................................... 281
Annexe G (normative) Correspondance entre la tension nominale du réseau
d’alimentation et la tension assignée de tenue aux chocs du matériel ................................ 286
Annexe H (informative) Courant admissible et puissance dissipée des câbles en
cuivre.................................................................................................................................. 288
Annexe I (informative) Equivalent thermique d’un courant intermittent ............................... 290
Annexe J (normative) Compatibilité électromagnétique (CEM) ........................................... 291
This is a preview - click here to buy the full publication
– 160 –
IEC 61439-1:2020 © IEC 2020
J.1
Généralités ......................................................................................................... 291
Annexe K (normative) Courant admissible et puissance dissipée des barres en cuivre
nues ................................................................................................................................... 299
Annexe L (informative) Recommandations concernant la vérification de l’échauffement ..... 302
L.1
Généralités ......................................................................................................... 302
L.1.1
Principes ..................................................................................................... 302
L.1.2
Caractéristiques assignées de courant des ensembles ................................ 302
L.2
Limites d’échauffement ....................................................................................... 303
L.3
Essai .................................................................................................................. 304
L.3.1
Généralités .................................................................................................. 304
L.3.2
Méthode a) – Vérification de l’ensemble complet (10.10.2.3.5) .................... 304
L.3.3
Méthode b) – Vérification séparée de chaque unité fonctionnelle et de
l’ensemble complet (10.10.2.3.6) ................................................................. 305
L.3.4
Méthode c) – Vérification individuelle de chaque unité fonctionnelle, des
jeux de barres principaux, des jeux de barres de distribution et de
l’ensemble complet (10.10.2.3.7) ................................................................. 305
L.4
Evaluation de vérification .................................................................................... 305
L.4.1
Généralités .................................................................................................. 305
L.4.2
Ensemble à un seul compartiment avec courant assigné, I nA , ne
dépassant pas 630 A ................................................................................... 305
L.4.3
Ensemble avec courants assignés, I nA , ne dépassant pas 1 600 A ............. 305
L.5
Vérification par comparaison avec une conception de référence ......................... 306
Annexe M (normative) Vérification de la tenue aux courts-circuits des structures de
jeux de barres par comparaison avec une conception de référence par calcul .................... 308
M.1
Généralités ......................................................................................................... 308
M.2
Termes et définitions .......................................................................................... 308
M.3
Méthode de vérification ....................................................................................... 309
M.4
Conditions d’application ...................................................................................... 310
M.4.1
Généralités .................................................................................................. 310
M.4.2
Valeur de crête du courant de court-circuit .................................................. 310
M.4.3
Contrainte thermique en court-circuit ........................................................... 310
M.4.4
Supports des jeux de barres ........................................................................ 310
M.4.5
Raccordements des jeux de barres, raccordements des matériels ............... 310
M.4.6
Configurations des jeux de barres coudées ................................................. 310
M.4.7
Calculs avec considération spéciale de l’oscillation des conducteurs ........... 311
Annexe N (informative) Liste de notes concernant certains pays ........................................ 312
Bibliographie ....................................................................................................................... 318
Figure E.1 – Ensemble type ................................................................................................ 277
Figure E.2 – Exemple 1: Tableau E.1 – Charge d’une unité fonctionnelle pour un
ensemble avec un facteur de diversité assigné de 0,68....................................................... 279
Figure E.3 – Exemple 2: Tableau E.1 – Charge d’une unité fonctionnelle pour un
ensemble avec un facteur de diversité assigné de 0,6 dans la colonne B et 0,68 dans
la colonne C ....................................................................................................................... 280
Figure F.1 – Mesure des distances d’isolement et des lignes de fuite ................................. 285
Figure I.1 – Exemple de calcul d’effet thermique moyen...................................................... 290
Figure J.1 – Exemples d’accès ........................................................................................... 291
Figure L.1 – Vérification de l’échauffement ......................................................................... 307
Figure M.1 – Structure de jeu de barres éprouvée par essai (SS) ....................................... 308
Figure M.2 – Structure de jeu de barres qui n’a pas été éprouvée par essai (NSS) ............. 309
This is a preview - click here to buy the full publication
IEC 61439-1:2020 © IEC 2020
– 161 –
Figure M.3 – Configuration de jeux de barres coudées avec supports aux coins ................. 310
This is a preview - click here to buy the full publication
– 162 –
IEC 61439-1:2020 © IEC 2020
COMMISSION ELECTROTECHNIQUE INTERNATIONALE
____________
ENSEMBLES D’APPAREILLAGE À BASSE TENSION –
Partie 1: Règles générales
AVANT-PROPOS
1) La Commission Electrotechnique Internationale (IEC) est une organisation mondiale de normalisation
composée de l'ensemble des comités électrotechniques nationaux (Comités nationaux de l’IEC). L’IEC a pour
objet de favoriser la coopération internationale pour toutes les questions de normalisation dans les domaines
de l'électricité et de l'électronique. A cet effet, l’IEC – entre autres activités – publie des Normes internationales,
des Spécifications techniques, des Rapports techniques, des Spécifications accessibles au public (PAS) et des
Guides (ci-après dénommés "Publication(s) de l’IEC"). Leur élaboration est confiée à des comités d'études, aux
travaux desquels tout Comité national intéressé par le sujet traité peut participer. Les organisations
internationales, gouvernementales et non gouvernementales, en liaison avec l’IEC, participent également aux
travaux. L’IEC collabore étroitement avec l'Organisation Internationale de Normalisation (ISO), selon des
conditions fixées par accord entre les deux organisations.
2) Les décisions ou accords officiels de l’IEC concernant les questions techniques représentent, dans la mesure
du possible, un accord international sur les sujets étudiés, étant donné que les Comités nationaux de l’IEC
intéressés sont représentés dans chaque comité d’études.
3) Les Publications de l’IEC se présentent sous la forme de recommandations internationales et sont agréées
comme telles par les Comités nationaux de l’IEC. Tous les efforts raisonnables sont entrepris afin que l’IEC
s'assure de l'exactitude du contenu technique de ses publications; l’IEC ne peut pas être tenue responsable de
l'éventuelle mauvaise utilisation ou interprétation qui en est faite par un quelconque utilisateur final.
4) Dans le but d'encourager l'uniformité internationale, les Comités nationaux de l’IEC s'engagent, dans toute la
mesure possible, à appliquer de façon transparente les Publications de l’IEC dans leurs publications nationales
et régionales. Toutes divergences entre toutes Publications de l’IEC et toutes publications nationales ou
régionales correspondantes doivent être indiquées en termes clairs dans ces dernières.
5) L’IEC elle-même ne fournit aucune attestation de conformité. Des organismes de certification indépendants
fournissent des services d'évaluation de conformité et, dans certains secteurs, accèdent aux marques de
conformité de l’IEC. L’IEC n'est responsable d'aucun des services effectués par les organismes de certification
indépendants.
6) Tous les utilisateurs doivent s'assurer qu'ils sont en possession de la dernière édition de cette publication.
7) Aucune responsabilité ne doit être imputée à l’IEC, à ses administrateurs, employés, auxiliaires ou mandataires,
y compris ses experts particuliers et les membres de ses comités d'études et des Comités nationaux de l’IEC,
pour tout préjudice causé en cas de dommages corporels et matériels, ou de tout autre dommage de quelque
nature que ce soit, directe ou indirecte, ou pour supporter les coûts (y compris les frais de justice) et les
dépenses découlant de la publication ou de l'utilisation de cette Publication de l’IEC ou de toute autre
Publication de l’IEC, ou au crédit qui lui est accordé.
8) L'attention est attirée sur les références normatives citées dans cette publication. L'utilisation de publications
référencées est obligatoire pour une application correcte de la présente publication.
9) L’attention est attirée sur le fait que certains des éléments de la présente Publication de l’IEC peuvent faire
l’objet de droits de brevet. L’IEC ne saurait être tenue pour responsable de ne pas avoir identifié de tels droits
de brevets et de ne pas avoir signalé leur existence.
La Norme internationale IEC 61439-1 a été établie par le sous-comité 121B: Ensembles
d'appareillages à basse tension, du comité d'études 121 de l'IEC: Appareillages et ensembles
d’appareillages basse tension.
Cette troisième édition annule et remplace la deuxième édition parue en 2011. Elle constitue
une révision technique.
Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition
précédente:
a) clarification du fait que les systèmes et matériels électroniques de conversion de
puissance, les alimentations à découpage, les alimentations sans interruption et les
systèmes d’entraînements électriques de puissance à vitesse variable sont soumis à essai
This is a preview - click here to buy the full publication
IEC 61439-1:2020 © IEC 2020
– 163 –
conformément à leur propre norme de produit, mais que lorsqu’ils sont incorporés dans
des ensembles, l’incorporation est conforme à la série de normes IEC 61439;
b) introduction d’un courant assigné de groupe pour les circuits au sein d’un ensemble
chargé et recentrage de la vérification de l’échauffement sur cette nouvelle caractéristique;
c) ajout d’exigences relatives au courant continu;
d) introduction du concept d’ensembles de classe I et de classe II en matière de protection
contre les chocs électriques.
Le texte de cette Norme internationale est issu des documents suivants:
FDIS
Rapport de vote
121B/99/FDIS
121B/103/RVD
Le rapport de vote indiqué dans le tableau ci-dessus donne toute information sur le vote ayant
abouti à l'approbation de cette Norme internationale.
L’attention du lecteur est attirée sur le fait que l’Annexe N énumère tous les articles traitant
des différences à caractère moins permanent inhérentes à certains pays, relatifs au présent
document.
Ce document a été rédigé selon les Directives ISO/IEC, Partie 2.
Une liste de toutes les parties de la série IEC 61439, publiées sous le titre général Ensembles
d’appareillage à basse tension, peut être consultée sur le site web de l’IEC.
Le comité a décidé que le contenu de ce document ne sera pas modifié avant la date de
stabilité indiquée sur le site web de l'IEC sous "http://webstore.iec.ch" dans les données
relatives au document recherché. A cette date, le document sera
•
reconduit,
•
supprimé,
•
remplacé par une édition révisée, ou
•
amendé.
Le contenu du corrigendum de décembre 2021 a été pris en considération dans cet
exemplaire.
This is a preview - click here to buy the full publication
– 164 –
IEC 61439-1:2020 © IEC 2020
INTRODUCTION
Le but du présent document est d’harmoniser, autant que possible, l’ensemble des règles et
des exigences de nature générale qui sont applicables aux ensembles d’appareillage à basse
tension afin d’obtenir l’uniformité des exigences et de la vérification pour les ensembles et
pour éviter toute vérification nécessaire selon d’autres normes. Toutes ces exigences
relatives aux différentes normes applicables aux ensembles qui peuvent être considérées
comme d’ordre général ont ainsi été rassemblées dans le présent document avec des aspects
spécifiques présentant une portée et une application étendues, par exemple l’échauffement,
les propriétés diélectriques, etc.
Pour chaque type d’ensemble d’appareillage à basse tension, seules deux normes principales
sont nécessaires pour déterminer toutes les exigences et toutes les méthodes
correspondantes de vérification:
–
la norme de base (le présent document) désignée sous l’appellation “IEC 61439-1” dans
les normes particulières couvrant les différents types d’ensembles d’appareillage à basse
tension;
–
la norme particulière applicable à un ensemble désignée ci-après également sous
l’appellation norme d’ensemble applicable.
Pour qu’une règle générale s’applique à une norme d’ensemble, il convient de citer celle-ci
explicitement en indiquant le présent document suivi du numéro de l’article ou du paragraphe
correspondant, par exemple “IEC 61439-1:2020, 9.1.3”.
Une norme d’ensemble particulière peut ne pas exiger et donc ne pas renvoyer à une règle
générale lorsque cette règle n’est pas applicable, ou elle peut ajouter des exigences si la
règle générale est considérée comme inappropriée dans le cas particulier traité, mais elle ne
peut pas introduire de divergences sauf si une justification technique importante est donnée
dans la norme d’ensemble particulière.
Lorsque, dans le présent document, des références de mise en correspondance sont faites à
un autre article, la référence doit s’appliquer à l’article considéré tel que modifié par la norme
d’ensemble particulière, le cas échéant.
Les exigences du présent document qui sont sujettes à un accord entre le constructeur
d’ensembles et l’utilisateur sont rassemblées à l’Annexe C (informative). Cette liste facilite
également la fourniture des informations sur les conditions de base et les spécifications
supplémentaires de l’utilisateur afin de permettre la conception, la mise en œuvre et
l’utilisation correctes de l’ensemble.
Pour la série IEC 61439, les parties suivantes sont publiées:
a) IEC 61439-1: Règles générales;
b) IEC 61439-2: Ensembles d’appareillage de puissance (ensembles EAP) 1;
c) IEC 61439-3: Tableaux de répartition destinés à être utilisés par des personnes ordinaires
(DBO);
d) IEC 61439-4: Exigences particulières pour ensembles de chantiers (EC);
e) IEC 61439-5: Ensembles pour réseaux de distribution publique;
f) IEC 61439-6: Systèmes de canalisation préfabriquée;
g) IEC 61439-7: Ensembles pour installations publiques particulières telles que les marinas,
les terrains de camping, les marchés et les emplacements analogues, et pour les bornes
de charge de véhicules électriques;
___________
1
L’IEC 61439-2 comprend les exigences pour les ensembles destinés aux installations photovoltaïques.
This is a preview - click here to buy the full publication
IEC 61439-1:2020 © IEC 2020
– 165 –
h) IEC TR 61439-0: Guidance to specifying assemblies (disponible en anglais seulement).
Cette liste n’est pas exhaustive; des parties supplémentaires peuvent être élaborées en
fonction des besoins.
This is a preview - click here to buy the full publication
– 166 –
IEC 61439-1:2020 © IEC 2020
ENSEMBLES D’APPAREILLAGE À BASSE TENSION –
Partie 1: Règles générales
1
Domaine d’application
La présente partie de l’IEC 61439 formule les définitions générales et les conditions d’emploi,
les exigences de construction, les caractéristiques techniques et les exigences de vérification
pour les ensembles d’appareillage à basse tension.
NOTE Dans le présent document, le terme ensemble(s) (voir 3.1.1) est utilisé pour désigner un ou des ensembles
d’appareillage à basse tension.
Dans le but de déterminer la conformité de l’ensemble, les exigences de la partie applicable
de la série IEC 61439 (à partir de la Partie 2), s’appliquent, de même que les exigences
citées dans le présent document. Pour les ensembles non couverts par les parties à partir de
la Partie 3, la Partie 2 s’applique.
Le présent document s’applique, uniquement lorsque la norme d’ensemble applicable l’exige,
aux ensembles tels que décrits ci-après:
–
les ensembles dont la tension assignée ne dépasse pas 1 000 V en courant alternatif ou
1 500 V en courant continu;
–
les ensembles conçus pour une fréquence nominale de l'alimentation ou des alimentations
d’entrée ne dépassant pas 1 000 Hz;
–
les ensembles conçus pour des applications d’intérieur ou d’extérieur;
–
les ensembles fixes ou mobiles, avec ou sans enveloppe;
–
les ensembles destinés à être utilisés avec des équipements conçus pour la production, le
transport, la distribution et la conversion de l’énergie électrique et la commande des
matériels consommant de l’énergie électrique.
Le présent document ne s’applique pas aux appareils considérés individuellement et aux
composants indépendants, tels que démarreurs de moteur, fusibles-interrupteurs, systèmes et
appareils électroniques de conversion de puissance (SECP), alimentations à découpage
(SMPS, Switch Mode Power Supplies), alimentations sans interruption (ASI), modules
d’entraînement principaux (MEP), modules d’entraînement complets (MEC), entraînements
électriques de puissance (PDS, Power Drive System) à vitesse variable et autres matériels
électroniques qui sont conformes aux normes de produit les concernant. Le présent document
décrit l’intégration d’appareils et de constituants indépendants dans un ensemble ou dans une
enveloppe vide formant un ensemble.
Pour certaines applications impliquant, par exemple, des atmosphères explosives ou la
sécurité fonctionnelle, il peut être nécessaire de satisfaire aux exigences d’autres normes ou
d’une autre législation, en plus de celles spécifiées dans la série IEC 61439.
2
Références normatives
Les documents suivants sont cités dans le texte de sorte qu’ils constituent, pour tout ou partie
de leur contenu, des exigences du présent document. Pour les références datées, seule
l’édition citée s’applique. Pour les références non datées, la dernière édition du document de
référence s’applique (y compris les éventuels amendements).
IEC 60068-2-2:2007, Essais d’environnement – Partie 2-2: Essais – Essai B: Chaleur sèche
This is a preview - click here to buy the full publication
IEC 61439-1:2020 © IEC 2020
– 167 –
IEC 60068-2-11:1981, Essais fondamentaux climatiques et de robustesse mécanique –
Partie 2-11: Essais – Essai Ka: Brouillard salin
IEC 60068-2-30:2005, Essais d’environnement – Partie 2-30: Essais – Essai Db: Essai
cyclique de chaleur humide (cycle de 12 h + 12 h)
IEC 60073:2002, Principes fondamentaux et de sécurité pour l’interface homme-machine, le
marquage et l’identification – Principes de codage pour les indicateurs et les organes de
commande
IEC 60085:2007, Isolation électrique – Evaluation et désignation thermiques
IEC 60364 (toutes les parties), Installations électriques à basse tension
IEC 60364-4-41:2005, Installations électriques à basse tension – Partie 4-41: Protection pour
assurer la sécurité – Protection contre les chocs électriques
IEC 60364-4-41:2005/AMD1:2017
IEC 60364-5-51:2005, Installations électriques des bâtiments – Partie 5-51: Choix et mise en
œuvre des matériels électriques – Règles communes
IEC 60364-5-52:2009, Installations électriques à basse tension – Partie 5-52: Choix et mise
en œuvre des matériels électriques – Canalisations
IEC 60439 (toutes les parties), Ensembles d’appareillage à basse tension 2
IEC 60445:2017, Principes fondamentaux et de sécurité pour les interfaces homme-machines,
le marquage et l’identification – Identification des bornes de matériels, des extrémités de
conducteurs et des conducteurs
IEC 60447:2004, Principes fondamentaux et de sécurité pour l’interface homme-machine, le
marquage et l’identification – Principes de manœuvre
IEC 60529:1989, Degrés de protection procurés par les enveloppes (Code IP) 3
IEC 60529:1989/AMD1:1999
IEC 60529:1989/AMD2:2013
IEC 60695-2-10:2013, Essais relatifs aux risques du feu – Partie 2-10: Essais au fil
incandescent/chauffant – Appareillage et méthode commune d’essai
IEC 60695-2-11:2014, Essais relatifs aux risques du feu – Partie 2-11: Essais au fil
incandescent/chauffant – Méthode d’essai d’inflammabilité pour produits finis (GWEPT)
IEC 60695-2-12, Essais relatifs aux risques du feu – Partie 2-12: Essais au fil
incandescent/chauffant – Méthode d'essai d'indice d'inflammabilité au fil incandescent (GWFI)
pour matériaux
IEC 60865-1:2011, Courants de court-circuit – Calcul des effets – Partie 1: Définitions et
méthodes de calcul
___________
2
Supprimée. La série IEC 60439 a été annulée et remplacée par la série IEC 61439.
3
Il existe une édition 2.2 consolidée (2013) de ce document, qui comprend l’IEC 60529 (1989), son
Amendement 1 (1999) et son Amendement 2 (2013).
This is a preview - click here to buy the full publication
– 168 –
IEC 61439-1:2020 © IEC 2020
IEC TR 60890:2014, Méthode de vérification par calcul des échauffements pour les
ensembles d’appareillage à basse tension
IEC 60947-4:1:2018, Appareillage à basse tension – Partie 4-1: Contacteurs et démarreurs de
moteurs – Contacteurs et démarreurs électromécaniques
IEC 61000-4-2:2008, Compatibilité électromagnétique (CEM) – Partie 4-2: Techniques d’essai
et de mesure – Essai d’immunité aux décharges électrostatiques
IEC 61000-4-3:2006, Compatibilité électromagnétique (CEM) – Partie 4-3: Techniques d’essai
et de mesure – Essai d’immunité aux champs électromagnétiques rayonnés aux fréquences
radioélectriques 4
IEC 61000-4-3:2006/AMD1:2007
IEC 61000-4-3:2006/AMD2:2010
IEC 61000-4-4:2012, Compatibilité électromagnétique (CEM) – Partie 4-4: Techniques d’essai
et de mesure – Essais d’immunité aux transitoires électriques rapides en salves
IEC 61000-4-5:2014, Compatibilité électromagnétique (CEM) – Partie 4-5: Techniques d’essai
et de mesure – Essai d’immunité aux ondes de choc 5
IEC 61000-4-5:2014/AMD1:2017
IEC 61000-4-6:2013, Compatibilité électromagnétique (CEM) – Partie 4-6: Techniques d’essai
et de mesure – Immunité aux perturbations conduites, induites par les champs
radioélectriques
IEC 61000-4-8:2009, Compatibilité électromagnétique (CEM) – Partie 4-8: Techniques d’essai
et de mesure – Essai d’immunité au champ magnétique à la fréquence du réseau
IEC 61000-4-11:2004, Compatibilité électromagnétique (CEM) – Partie 4-11: Techniques
d’essai et de mesure – Essais d’immunité aux creux de tension, coupures brèves et variations
de tension
IEC 61000-4-11:2004/AMD1:2017
IEC 61000-6-3:2006, Compatibilité électromagnétique (CEM) – Partie 6-3: Normes génériques
– Norme sur l’émission pour les environnements résidentiels, commerciaux et de l’industrie
légère
IEC 61000-6-3:2006/AMD1:2010
IEC 61000-6-4:2018, Compatibilité électromagnétique (CEM) – Partie 6-4: Normes génériques
– Norme sur l’émission pour les environnements industriels
IEC 61082-1:2014, Etablissement des documents utilisés en électrotechnique – Partie 1:
Règles
IEC 61180:2016, Techniques des essais à haute tension pour matériel à basse tension –
Définitions, exigences relatives aux essais, matériel d'essai
IEC 61439 (toutes les parties), Ensembles d’appareillage à basse tension
___________
4
Il existe une édition 3.2 consolidée (2010) qui comprend l’IEC 61000-4-3 (2006), l’Amendement 1 (2007) et
l’Amendement 2 (2010).
5
Il existe une édition 3.1 consolidée (2017) qui comprend l’IEC 61000-4-5 (2014) et son Amendement 1 (2017).
This is a preview - click here to buy the full publication
IEC 61439-1:2020 © IEC 2020
– 169 –
IEC 61921:2017, Condensateurs de puissance – Batteries de compensation du facteur de
puissance basse tension
IEC 62208:2011, Enveloppes vides destinées aux ensembles d’appareillage à basse tension
– Règles générales
IEC 81346-1:2009, Systèmes industriels, installations et appareils, et produits industriels –
Principes de structuration et désignations de référence – Partie 1: Règles de base
IEC 81346-2:2019, Systèmes industriels, installations et appareils, et produits industriels –
Principes de structuration et désignations de référence – Partie 2: Classification des objets et
codes pour les classes
CISPR 11:2015, Appareils industriels, scientifiques et médicaux – Caractéristiques de
perturbations radioélectriques – Limites et méthodes de mesure
CISPR 11:2015/AMD1:2016
CISPR 11:2015/AMD2:2019
CISPR 32:2015, Compatibilité électromagnétique des équipements multimédia – Exigences
d'émission
CISPR 32:2015/AMD1:2019
ISO 178:2010, Plastiques – Détermination des propriétés en flexion
ISO 178:2010/AMD1:2013
ISO 179-1:2010, Plastiques – Détermination des caractéristiques au choc Charpy – Partie 1:
Essai de choc non instrumenté
ISO 179-2:1997, Plastiques – Détermination des caractéristiques au choc Charpy – Partie 2:
Essai de choc instrumenté
ISO 179-2:1997/AMD1:2011
ISO 2409:2013, Peintures et vernis – Essai de quadrillage
ISO 4628-3:2016, Peintures et vernis – Evaluation de la dégradation des revêtements –
Désignation de la quantité et de la dimension des défauts, et de l’intensité des changements
uniformes d’aspect – Partie 3: Evaluation du degré d’enrouillement
ISO 4892-2:2013, Plastiques – Méthodes d’exposition à des sources lumineuses de
laboratoire – Partie 2: Lampes à arc au xénon
ISO 7010, Symboles graphiques – Couleurs de sécurité et signaux de sécurité – Signaux de
sécurité enregistrés
3
Termes et définitions
Pour les besoins du présent document, les termes et définitions suivants s’appliquent.
L’ISO et l’IEC tiennent à jour des bases de données terminologiques destinées à être utilisées
en normalisation, consultables aux adresses suivantes:
•
IEC Electropedia: disponible à l’adresse http://www.electropedia.org/
•
ISO Online browsing platform: disponible à l’adresse http://www.iso.org/obp