I.S. EN IEC 61439-1:2021
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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Low-voltage switchgear and controlgear assemblies - Part 1: General rules (IEC 61439-1:2020)
Hardcopy , PDF
22-02-2022
English
24-06-2021
For Harmonized Standards, check the EU site to confirm that the Standard is cited in the Official Journal.
Only cited Standards give presumption of conformance to New Approach Directives/Regulations.
Dates of withdrawal of national standards are available from NSAI.
FOREWORD 8
INTRODUCTION 10
1 Scope 11
2 Normative references 11
3 Terms and definitions 14
5 Interface characteristics 33
6 Information 37
7 Service conditions 38
8 Constructional requirements 40
9 Performance requirements 57
10 Design verification 60
11 Routine verification 93
Annex A (normative) Minimum and maximum cross-section of copper cables suitable
for connection to terminals for external cables (see 88) 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
Annex F (normative) Measurement of clearances and creepage distances 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
Annex K (normative) Operating current and power loss of bare copper bars 134
Annex L (informative) Guidance on verification of temperature-rise 137
Annex M (normative) Verification of the short-circuit withstand strength of busbar
structures by comparison with a reference design by calculation 142
Annex N (informative) List of notes concerning certain countries 146
Bibliography
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.
| Committee |
TC 121
|
| DocumentType |
Standard
|
| ISBN |
978-2-8322-8154-3
|
| Pages |
342
|
| ProductNote |
This standard is also refers to:-IEC 60529: 1989/AMD1:1999, IEC 60227-3:1993/AMD1: 1997, IEC 60227-4:1992/AMD1:1997, IEC 60364-4-44:2007/AMD2:2018,IEC 60364-5-53:2001/AMD1:2002,IEC 60364-5-53: 2001/AMD2 : 2015, IEC 60417, NMX-J-235/1-ANCE:2015,NMX-J-235/2-ANCE:2015,NOM-001-SEDE-2018.
The date of any NSAI previous adoption may not match the date of its original CEN/CENELEC document. |
| PublisherName |
National Standards Authority of Ireland
|
| Status |
Superseded
|
| SupersededBy | |
| Supersedes |
| Standards | Relationship |
| IEC 61439-1:2020 | Identical |
| EN IEC 61439-1:2021 | Identical |
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