BS EN 61439-1-2009 低压开关设备和控制设备.总则.pdf

®¿·-·²¹ -¬¿²¼¿®¼- ©±®´¼©·¼» ÒÑ ÝÑÐÇ×ÒÙ É×ÌØÑËÌ ÞÍ× ÐÛÎÓ×ÍÍ×ÑÒ ÛÈÝÛÐÌ ßÍ ÐÛÎÓ×ÌÌÛÜ ÞÇ ÝÑÐÇÎ×ÙØÌ ÔßÉ ÞÍ× Í¬¿²¼¿®¼- Ы¾´·½¿¬·±² Low-voltage switchgear and controlgear assemblies Part 1: General rules BS EN 61439-1:2009 Ô·½»²-»¼ ݱ°§æ ¿¬¸»² ®»¿¼·²¹ô λ¿¼·²¹ ˲·ª»®-·¬§ Ô·¾®¿®§ô îìñðïñîðïð ðîæðëô ˲½±²¬®±´´»¼ ݱ°§ô ø½÷ ÞÍ× National foreword The CENELEC common modifications have been implemented at the appro priate places in the text The UK participation in its preparation was entrusted by Technical Committee PEL/17, Switchgear, controlgear, and HV-LV co-ordination, to Subcommittee PEL/17/3, Low voltage switchgear and controlgear assemblies. A list of organizations represented on this subcommittee can be obtained on request to its secretary. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. © BSI 2010 ISBN 978 0 580 54663 1 ICS 29.130.20 Compliance with a British Standard cannot confer immunity from legal obligations. Amendments issued since publication Amd. No. Date Text affected BRITISH STANDARDBS EN 61439-1:2009 . The start and finish of each common modification is indicated in the text by tags . ñ½±®®·¹»²¼¿ Ô·½»²-»¼ ݱ°§æ ¿¬¸»² ®»¿¼·²¹ô λ¿¼·²¹ ˲·ª»®-·¬§ Ô·¾®¿®§ô îìñðïñîðïð ðîæðëô ˲½±²¬®±´´»¼ ݱ°§ô ø½÷ ÞÍ× EUROPEAN STANDARD EN 61439-1 NORME EUROPÉENNE EUROPÄISCHE NORM November 2009 CENELEC European Committee for Electrotechnical Standardization Comité Européen de Normalisation Electrotechnique Europäisches Komitee für Elektrotechnische Normung Central Secretariat: Avenue Marnix 17, B - 1000 Brussels © 2009 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 61439-1:2009 E ICS 29.130.20 Supersedes EN 60439-1:1999 + A1:2004 English version Low-voltage switchgear and controlgear assemblies - Part 1: General rules (IEC 61439-1:2009, modified) Ensembles d'appareillage à basse tension - Partie 1: Règles générales (CEI 61439-1:2009, modifiée) Niederspannungs- Schaltgerätekombinationen - Teil 1: Allgemeine Festlegungen (IEC 61439-1:2009, modifiziert) This European Standard was approved by CENELEC on 2009-11-01. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Central Secretariat or to any CENELEC member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CENELEC member into its own language and notified to the Central Secretariat has the same status as the official versions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Cyprus, the Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. BS EN 61439-1:2009 Ô·½»²-»¼ ݱ°§æ ¿¬¸»² ®»¿¼·²¹ô λ¿¼·²¹ ˲·ª»®-·¬§ Ô·¾®¿®§ô îìñðïñîðïð ðîæðëô ˲½±²¬®±´´»¼ ݱ°§ô ø½÷ ÞÍ× EN 61439-1:2009 1 Foreword The text of the International Standard IEC 61439-1:2009, prepared by SC 17D, Low-voltage switchgear and controlgear assemblies, of IEC TC 17, Switchgear and controlgear, together with the common modifications prepared by the Technical Committee CENELEC TC 17D, Low-voltage switchgear and controlgear assemblies, was submitted to the formal vote and was approved by CENELEC as EN 61439-1 on 2009-11-01. This European Standard supersedes EN 60439-1:1999 + A1:2004. This European Standard includes the following significant technical changes with respect to EN 60439-1:1999: the dual role of EN 60439-1 as a product standard in its own right, as well as a general rules standard for assemblies covered by a subsidiary product part of the EN 60439 series, has been abandoned; consequently, EN 61439-1 is a pure “general rules” standard to be referred to by subsidiary product parts of the EN 61439 series; the product standard replacing EN 60439-1 is EN 61439-2; the discrimination between type-tested assemblies (TTA) and partially type-tested assemblies (PTTA) is eliminated by the verification approach; three different but equivalent types of verification of requirements are introduced: verification by testing, verification by calculation/measurement, or verification by satisfying design rules; the requirements regarding temperature rise have been clarified; the rated diversity factor (RDF) is covered in more detail; requirements from the standard for empty enclosures for assemblies (EN 62208) have been incorporated; the whole structure of the standard is aligned with its new function as “general rules” standard. The following dates were fixed: latest date by which the EN has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2010-11-01 latest date by which the national standards conflicting with the EN have to be withdrawn (dow) 2014-11-01 However, when a dated reference to EN 60439-1 is made in another part of the EN 60439 series of assembly standards not yet transferred into the new EN 61439 series, the superseded EN 60439-1 still applies (see also the Introduction). This European Standard has been prepared under a mandate given to CENELEC by the European Commission and the European Free Trade Association and covers essential requirements of EC Directive EMC (2004/108/EC). See Annex ZZ. Annexes ZA and ZZ have been added by CENELEC. _ BS EN 61439-1:2009 Ô·½»²-»¼ ݱ°§æ ¿¬¸»² ®»¿¼·²¹ô λ¿¼·²¹ ˲·ª»®-·¬§ Ô·¾®¿®§ô îìñðïñîðïð ðîæðëô ˲½±²¬®±´´»¼ ݱ°§ô ø½÷ ÞÍ× 2 EN 61439-1:2009 Endorsement notice The text of the International Standard IEC 61439-1:2009 was approved by CENELEC as a European Standard with agreed common modifications. BS EN 61439-1:2009 Ô·½»²-»¼ ݱ°§æ ¿¬¸»² ®»¿¼·²¹ô λ¿¼·²¹ ˲·ª»®-·¬§ Ô·¾®¿®§ô îìñðïñîðïð ðîæðëô ˲½±²¬®±´´»¼ ݱ°§ô ø½÷ ÞÍ× 3 61439-1 IEC:2009 CONTENTS INTRODUCTION. 9 1 Scope.10 2 Normative references .10 3 Terms and definitions .13 3.1 General terms .13 3.2 Constructional units of ASSEMBLIES14 3.3 External design of ASSEMBLIES.15 3.4 Structural parts of ASSEMBLIES.16 3.5 Conditions of installation of ASSEMBLIES.18 3.6 Insulation characteristics.18 3.7 Protection against electric shock .21 3.8 Characteristics 22 3.9 Verification25 3.10 Manufacturer.25 4 Symbols and abbreviations.25 5 Interface characteristics .27 5.1 General .27 5.2 Voltage ratings 27 5.2.1 Rated voltage (Un) (of the ASSEMBLY) 27 5.2.2 Rated operational voltage (Ue) (of a circuit of an ASSEMBLY)27 5.2.3 Rated insulation voltage (Ui) (of a circuit of an ASSEMBLY) .27 5.2.4 Rated impulse withstand voltage (Uimp) (of the ASSEMBLY)27 5.3 Current ratings 27 5.3.1 Rated current of the ASSEMBLY (InA)27 5.3.2 Rated current of a circuit (Inc) .28 5.3.3 Rated diversity factor (RDF) 28 5.3.4 Rated peak withstand current (Ipk)28 5.3.5 Rated short-time withstand current (Icw) (of a circuit of an ASSEMBLY) .28 5.3.6 Rated conditional short-circuit current of an ASSEMBLY (Icc).28 5.4 Rated frequency (fn)29 5.5 Other characteristics .29 6 Information.29 6.1 ASSEMBLY designation marking 29 6.2 Documentation 29 6.2.1 Information relating to the ASSEMBLY29 6.2.2 Instructions for handling, installation, operation and maintenance .30 6.3 Device and/or component identification .31 7 Service conditions 31 7.1 Normal service conditions .31 7.1.1 Ambient air temperature 31 7.1.2 Atmospheric conditions31 7.1.3 Pollution degree 31 7.1.4 Altitude32 7.2 Special service conditions .32 BS EN 61439-1:2009 Ô·½»²-»¼ ݱ°§æ ¿¬¸»² ®»¿¼·²¹ô λ¿¼·²¹ ˲·ª»®-·¬§ Ô·¾®¿®§ô îìñðïñîðïð ðîæðëô ˲½±²¬®±´´»¼ ݱ°§ô ø½÷ ÞÍ× 61439-1 IEC:2009 4 7.3 Conditions during transport, storage and installation .33 8 Constructional requirements.33 8.1 Strength of materials and parts33 8.1.1 General .33 8.1.2 Protection against corrosion 33 8.1.3 Thermal stability33 8.1.4 Resistance to ultra-violet radiation.33 8.1.5 Resistance of insulating materials to heat and fire.33 8.1.6 Mechanical strength 34 8.1.7 Lifting provision .34 8.2 Degree of protection provided by an ASSEMBLY enclosure34 8.2.1 Protection against mechanical impact34 8.2.2 Protection against contact with live parts, ingress of solid foreign bodies and liquids34 8.2.3 Degree of protection of removable parts 35 8.3 Clearances and creepage distances35 8.3.1 General .35 8.3.2 Clearances36 8.3.3 Creepage distances.36 8.4 Protection against electric shock .36 8.4.1 General .36 8.4.2 Basic protection.37 8.4.3 Fault protection .38 8.4.4 Limitation of steady-state touch current and charge.41 8.4.5 Operating and servicing conditions41 8.5 Incorporation of switching devices and components 43 8.5.1 Fixed parts 43 8.5.2 Removable parts .43 8.5.3 Selection of switching devices and components.43 8.5.4 Installation of switching devices and components 44 8.5.5 Accessibility 44 8.5.6 Barriers .44 8.5.7 Direction of operation and indication of switching positions44 8.5.8 Indicator lights and push-buttons.44 8.6 Internal electrical circuits and connections 45 8.6.1 Main circuits 45 8.6.2 Auxiliary circuits 45 8.6.3 Bare and insulated conductors 45 8.6.4 Selection and installation of non-protected live conductors to reduce the possibility of short-circuits .46 8.6.5 Identification of the conductors of main and auxiliary circuits.46 8.6.6 Identification of the protective conductor (PE, PEN) and of the neutral conductor (N) of the main circuits 46 8.7 Cooling47 8.8 Terminals for external conductors47 9 Performance requirements .48 9.1 Dielectric properties 48 9.1.1 General .48 9.1.2 Power-frequency withstand voltage .48 BS EN 61439-1:2009 Ô·½»²-»¼ ݱ°§æ ¿¬¸»² ®»¿¼·²¹ô λ¿¼·²¹ ˲·ª»®-·¬§ Ô·¾®¿®§ô îìñðïñîðïð ðîæðëô ˲½±²¬®±´´»¼ ݱ°§ô ø½÷ ÞÍ× 5 61439-1 IEC:2009 9.1.3 Impulse withstand voltage .49 9.1.4 Protection of surge protective devices .49 9.2 Temperature rise limits49 9.3 Short-circuit protection and short-circuit withstand strength.49 9.3.1 General .49 9.3.2 Information concerning short-circuit withstand strength .50 9.3.3 Relationship between peak current and short-time current.50 9.3.4 Co-ordination of protective devices50 9.4 Electromagnetic compatibility (EMC) .51 10 Design verification51 10.1 General .51 10.2 Strength of materials and parts52 10.2.1 General .52 10.2.2 Resistance to corrosion .52 10.2.3 Properties of insulating materials.53 10.2.4 Resistance to ultra-violet (UV) radiation.55 10.2.5 Lifting 55 10.2.6 Mechanical impact.56 10.2.7 Marking .56 10.3 Degree of protection of ASSEMBLIES.56 10.4 Clearances and creepage distances56 10.5 Protection against electric shock and integrity of protective circuits.57 10.5.1 Effectiveness of the protective circuit.57 10.5.2 Effective earth continuity between the exposed conductive parts of the ASSEMBLY and the protective circuit57 10.5.3 Short-circuit withstand strength of the protective circuit .57 10.6 Incorporation of switching devices and components 58 10.6.1 General .58 10.6.2 Electromagnetic compatibility 58 10.7 Internal electrical circuits and connections 58 10.8 Terminals for external conductors58 10.9 Dielectric properties 58 10.9.1 General .58 10.9.2 Power-frequency withstand voltage .58 10.9.3 Impulse withstand voltage .59 10.9.4 Testing of enclosures made of insulating material61 10.10 Verification of temperature rise.61 10.10.1 General.61 10.10.2 Verification by testing with current.61 10.10.3 Derivation of ratings for similar variants 67 10.10.4 Verification by calculation68 10.11 Short-circuit withstand strength.70 10.11.1 General.70 10.11.2 Circuits of ASSEMBLIES which are exempted from the verification of the short-circuit withstand strength71 10.11.3 Verification by the application of design rules71 10.11.4 Verification by comparison with a reference design .71 10.11.5 Verification by test 71 10.12 Electromagnetic compatibility (EMC) 76 BS EN 61439-1:2009 Ô·½»²-»¼ ݱ°§æ ¿¬¸»² ®»¿¼·²¹ô λ¿¼·²¹ ˲·ª»®-·¬§ Ô·¾®¿®§ô îìñðïñîðïð ðîæðëô ˲½±²¬®±´´»¼ ݱ°§ô ø½÷ ÞÍ× 61439-1 IEC:2009 6 10.13 Mechanical operation76 11 Routine verification.77 11.1 General 77 11.2 Degree of protection of enclosures .77 11.3 Clearances and creepage distances .77 11.4 Protection against electric shock and integrity of protective circuits 78 11.5 Incorporation of built-in components .78 11.6 Internal electrical circuits and connections78 11.7 Terminals for external conductors.78 11.8 Mechanical operation78 11.9 Dielectric properties78 11.10 Wiring, operational performance and function .78 Annex A (normative) Minimum and maximum cross-section of copper conductors suitable for connection to terminals for external conductors (see 8.8) 86 Annex B (normative) Method of calculating the cross-sectional area of protective conductors with regard to thermal stresses due to currents of short duration .87 Annex C (informative) Items subject to agreement between the ASSEMBLY Manufacturer and the User .88 Annex D (informative) Design verification 91 Annex E (informative) Rated diversity factor 92 Annex F (normative) Measurement of clearances and creepage distances 101 Annex G (normative) Correlation between the nominal voltage of the supply system and the rated impulse withstand voltage of the equipment 107 Annex H (informative) Operating current and power loss of copper conductors 109 Annex J (normative) Electromagnetic compatibility (EMC)113 Annex K (normative) Protection by electrical separation.120 Annex L (informative) Clearances and creepage distances for North American region .123 Annex M (informative) North American temperature rise limits .124 Bibliography125 Figure E.1 Typical ASSEMBLY93 Figure E.2 Example 1: Table E.1 Functional unit loading for an ASSEMBLY with a rated diversity factor of 0,8 .95 Figure E.3 Example 2: Table E.1 Functional unit loading for an ASSEMBLY with a rated diversity factor of 0,8 .96 Figure E.4 Example 3: Table E.1 Functional unit loading for an ASSEMBLY with a rated diversity factor of 0,8 .97 Figure E.5 Example 4: Table E.1 Functional unit loading for an ASSEMBLY with a rated diversity factor of 0,8 .98 Figure E.6 Example of average heating effect calculation 99 Figure E.7 Example graph for the relation between the equivalent RDF and the parameters at intermittent duty at t1 = 0,5 s, I1 = 7*I2 at different cycle times 100 Figure E.8 Example graph for the relation between the equivalent RDF and the parameters at intermittent duty at I1 = I2 (no starting overcurrent)100 Figure F.1 Measurement of ribs .102 Figure J.1 Examples of ports .113 BS EN 61439-1:2009 Annex ZA (normative) Normative references to international publications wit