IEC 61439-1 : 2.0

LOW-VOLTAGE SWITCHGEAR AND CONTROLGEAR ASSEMBLIES - PART 1: GENERAL RULES

International Electrotechnical Committee

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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 conductors suitable for connection to
        terminals for external conductors
Annex B (normative) - Method of calculating the cross-sectional
        area of protective conductors 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 conductors
Annex J (normative) - Electromagnetic compatibility (EMC)
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 N (normative) - Operating current and power loss of
        bare copper bars
Annex O (informative) - Guidance on temperature rise verification
Annex P (normative) - Verification of the short-circuit withstand
        strength of busbar structures by comparison with a tested
        reference design by calculation
Bibliography

Abstract

Provides the definitions and states the service conditions, construction requirements, technical characteristics a requirements for low-voltage switchgear and controlgear assemblies.