I.S. EN IEC 61439-1:2021/AC:2022-01
Current
The latest, up-to-date edition.
Low-voltage switchgear and controlgear assemblies - Part 1: General rules (IEC 61439-1:2020/COR1:2021)
Hardcopy , PDF
English
07-02-2022
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Only cited Standards give presumption of conformance to New Approach Directives/Regulations.
FOREWORD
INTRODUCTION
1 Scope
2 Normative references
3 Terms and definitions
4 Symbols and abbreviations
5 Interface characteristics
6 Information
7 Service conditions
8 Constructional requirements
9 Performance requirements
10 Design verification
11 Routine verification
Annex A (normative) Minimum and maximum cross-section of copper cables suitable for connection to terminals for external cables (see 88)
Annex B (normative) Method of calculating the cross-sectional area of protectiveconductors with regard to thermal stresses due to currents of short duration
Annex C (informative) User information template
Annex D (informative) Design verification
Annex E (informative) Rated diversity factor
Annex F (normative) Measurement of clearances and creepage distances
Annex G (normative) Correlation between the nominal voltage of the supply system and the rated impulse withstand voltage of the equipment
Annex H (informative) Operating current and power loss of copper cables
Annex I (informative) Thermal equivalent of an intermittent current
Annex J (normative) Electromagnetic compatibility (EMC)
Annex K (normative) Operating current and power loss of bare copper bars
Annex L (informative) Guidance on verification of temperature-rise
Annex M (normative) Verification of the short-circuit withstand strength of busbar structures by comparison with a reference design by calculation
Annex N (informative) List of notes concerning certain countries
Bibliography
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