1、BSI Standards PublicationLow-voltage switchgear and controlgearPart 7-4: Ancillary equipment PCB terminal blocks for copper conductorsBS EN 60947-7-4:2013National forewordThis British Standard is the UK implementation of EN 60947-7-4:2013. It isidentical to IEC 60947-7-4:2013.The UK participation in
2、 its preparation was entrusted by TechnicalCommittee PEL/17, Switchgear, controlgear, and HV-LV co-ordination, toSubcommittee PEL/17/2, Low voltage switchgear and controlgear.A list of organizations represented on this committee can be obtained onrequest to its secretary.This publication does not pu
3、rport to include all the necessary provisions ofa contract. Users are responsible for its correct application. The British Standards Institution 2013.Published by BSI Standards Limited 2013ISBN 978 0 580 68354 1ICS 29.130.20Compliance with a British Standard cannot confer immunity fromlegal obligati
4、ons.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 31 October 2013.Amendments/corrigenda issued since publicationDate Text affectedBRITISH STANDARDBS EN 60947-7-4:2013EUROPEAN STANDARD EN 60947-7-4 NORME EUROPENNE EUROPISCHE NORM October 2013
5、 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung CEN-CENELEC Management Centre: Avenue Marnix 17, B - 1000 Brussels 2013 CENELEC - All rights of exploitation in any form and by any means
6、reserved worldwide for CENELEC members. Ref. No. EN 60947-7-4:2013 E ICS 29.130.20 English version Low-voltage switchgear and controlgear - Part 7-4: Ancillary equipment - PCB terminal blocks for copper conductors (IEC 60947-7-4:2013) Appareillage basse tension - Partie 7-4: Matriels accessoires - B
7、locs de jonction pour cartes de circuits imprims pour conducteurs en cuivre (CEI 60947-7-4:2013) Niederspannungsschaltgerte - Teil 7-4: Hilfseinrichtungen - Leiterplatten-Anschlussklemmen fr Kupferleiter (IEC 60947-7-4:2013) This European Standard was approved by CENELEC on 2013-09-10. CENELEC membe
8、rs 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 applicatio
9、n to the CEN-CENELEC Management Centre 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 CEN-CENELEC
10、Management Centre has the same status as the official versions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland
11、, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. BS EN 60947-7-4:2013EN 60947-7-4:2013 - 2 - Foreword The text of document 17B/1822/FDIS, future edition 1 of IEC
12、60947-7-4, prepared by SC 17B “Low-voltage switchgear and controlgear” of IEC/TC 17 “Switchgear and controlgear“ was submitted to the IEC-CENELEC parallel vote and approved by CENELEC as EN 60947-7-4:2013. The following dates are fixed: latest date by which the document has to be implemented at nati
13、onal level by publication of an identical national standard or by endorsement (dop) 2014-06-10 latest date by which the national standards conflicting with the document have to be withdrawn (dow) 2016-09-10 Attention is drawn to the possibility that some of the elements of this document may be the s
14、ubject of patent rights. CENELEC and/or CEN shall not be held responsible for identifying any or all such patent rights. Endorsement notice The text of the International Standard IEC 60947-7-4:2013 was approved by CENELEC as a European Standard without any modification. In the official version, for
15、Bibliography, the following notes have to be added for the standards indicated: IEC 60512-5-1 NOTE Harmonized as EN 60512-5-1. IEC 60512-9-5 NOTE Harmonized as EN 60512-9-5. IEC 60529 NOTE Harmonized as EN 60529. IEC 60664-1:2007 NOTE Harmonized as EN 60664-1:2007 (not modified). IEC 60695-2-10 NOTE
16、 Harmonized as EN 60695-2-10. IEC 60695-10-2 NOTE Harmonized as EN 60695-10-2. IEC 60695-11-5 NOTE Harmonized as EN 60695-11-5. IEC 60998-1:2002 NOTE Harmonized as EN 60998-1:2004 (modified). IEC 61984 NOTE Harmonized as EN 61984. BS EN 60947-7-4:2013- 3 - EN 60947-7-4:2013 Annex ZA (normative) Norm
17、ative references to international publications with their corresponding European publications The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated referen
18、ces, the latest edition of the referenced document (including any amendments) applies. NOTE When an international publication has been modified by common modifications, indicated by (mod), the relevant EN/HD applies. Publication Year Title EN/HD Year IEC 60068-2-20 - Environmental testing - Part 2-2
19、0: Tests - Test T: Test methods for solderability and resistance to soldering heat of devices with leads EN 60068-2-20 - IEC 60352-1 - Solderless connections - Part 1: Wrapped connections - General requirements, test methods and practical guidance EN 60352-1 - IEC 60352-2 - Solderless connections -
20、Part 2: Crimped connections - General requirements, test methods and practical guidance EN 60352-2 - IEC 60352-3 - Solderless connections - Part 3: Solderless accessible insulation displacement connections - General requirements, test methods and practical guidance EN 60352-3 - IEC 60352-4 - Solderl
21、ess connections - Part 4: Solderless non-accessible insulation displacement connections - General requirements, test methods and practical guidance EN 60352-4 - IEC 60352-5 - Solderless connections - Part 5: Press-in connections - General requirements, test methods and practical guidance EN 60352-5
22、- IEC 60352-6 - Solderless connections - Part 6: Insulation piercing connections - General requirements, test methods and practical guidance EN 60352-6 - IEC 60352-7 - Solderless connections - Part 7: Spring clamp connections - General requirements, test methods and practical guidance EN 60352-7 - I
23、EC 60512-2-1 - Connectors for electronic equipment - Tests and measurements - Part 2-1: Electrical continuity and contact resistance tests - Test 2a: Contact resistance - Millivolt level method EN 60512-2-1 - BS EN 60947-7-4:2013EN 60947-7-4:2013 - 4 - Publication Year Title EN/HD Year IEC 60512-4-1
24、 - Connectors for electronic equipment - Tests and measurements - Part 4-1: Voltage stress tests - Test 4a: Voltage proof EN 60512-4-1 - IEC 60512-5-2 - Connectors for electronic equipment - Tests and measurements - Part 5-2: Current-carrying capacity tests - Test 5b: Current-temperature derating EN
25、 60512-5-2 - IEC 60512-11-7 - Connectors for electronic equipment - Tests and measurements - Part 11- 7: Climatic tests - Test 11g: Flowing mixed gas corrosion test EN 60512-11-7 - IEC 60512-11-9 - Connectors for electronic equipment - Tests and measurements - Part 11-9: Climatic tests - Test 11i: D
26、ry heat EN 60512-11-9 - IEC 60512-11-10 - Connectors for electronic equipment - Tests and measurements - Part 11-10: Climatic tests - Test 11j: Cold EN 60512-11-10 - IEC 60695-2-11 - Fire hazard testing - Part 2-11: Glowing/hot-wire based test methods - Glow-wire flammability test method for end-pro
27、ducts EN 60695-2-11 - 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 EN 60695-2-12 - IEC 60695-2-13 - Fire hazard testing - Part 2-13: Glowing/hot-wire based test methods - Glow-wire ignition tempe
28、rature (GWIT) test method for materials EN 60695-2-13 - IEC 60947-1 + A1 2007 2010 Low-voltage switchgear and controlgear - Part 1: General rules EN 60947-1 + A1 2007 2011 IEC 60998-2-3 - Connecting devices for low-voltage circuits for household and similar purposes - Part 2-3: Particular requiremen
29、ts for connecting devices as separate entities with insulation-piercing clamping units EN 60998-2-3 - IEC 60999-1 - Connecting devices - Electrical copper conductors - Safety requirements for screw-type and screwless-type clamping units - Part 1: General requirements and particular requirements for
30、clamping units for conductors from 0,2 mm up to 35 mm (included) EN 60999-1 - IEC 60999-2 - Connecting devices - Electrical copper conductors - Safety requirements for screw-type and screwless-type clamping units - Part 2: Particular requirements for clamping units for conductors above 35 mm up to 3
31、00 mm (included) EN 60999-2 - IEC 61210 - Connecting devices - Flat quick-connect terminations for electrical copper conductors - Safety requirements EN 61210 - BS EN 60947-7-4:2013- 5 - EN 60947-7-4:2013 Publication Year Title EN/HD Year ISO 6988 - Metallic and other non-organic coatings - Sulfur d
32、ioxide test with general condensation of moisture EN ISO 6988 - BS EN 60947-7-4:2013 2 60947-7-4 IEC:2013 CONTENTS INTRODUCTION . 6 1 General 7 1.1 Scope 7 1.2 Normative references 7 2 Terms and definitions . 9 3 Classification 10 4 Characteristics . 10 4.1 Summary of characteristics . 10 4.2 Type o
33、f PCB terminal block . 10 4.3 Rated and limiting values 10 4.3.1 Rated voltages 10 4.3.2 Rated current 10 4.3.3 Standard cross-sections 10 4.3.4 Maximum cross-section . 11 4.3.5 Connecting capacity 11 5 Product information 12 5.1 Marking . 12 5.2 Additional information 13 6 Normal service, mounting
34、and transport conditions . 13 7 Constructional and performance requirements 13 7.1 Constructional requirements 13 7.1.1 Clamping units . 13 7.1.2 Mounting and installation . 14 7.1.3 Clearances and creepage distances 14 7.1.4 Terminal identification and marking . 14 7.1.5 Resistance to abnormal heat
35、 and fire . 15 7.1.6 Maximum cross-section and connecting capacity . 15 7.2 Performance requirements 15 7.2.1 Temperature rise . 15 7.2.2 Dielectric properties . 15 7.2.3 Short-time withstand current 15 7.2.4 Contact resistance . 16 7.2.5 Ageing test (climatic sequence and corrosion test) 16 7.3 Ele
36、ctromagnetic compatibility (EMC) . 16 8 Tests 16 8.1 Kinds of test 16 8.2 General . 16 8.3 Verification of mechanical characteristics 17 8.3.1 General . 17 8.3.2 Attachment of the PCB terminal block on its support 17 8.3.3 Vacant . 17 8.3.4 Verification of the maximum cross-section and connecting ca
37、pacity . 17 8.3.5 Verification of maximum cross-section (special test with gauges) 17 8.4 Verification of electrical characteristics 17 8.4.1 General . 17 BS EN 60947-7-4:201360947-7-4 IEC:2013 3 8.4.2 Verification of clearances and creepage distances. 18 8.4.3 Dielectric tests . 18 8.4.4 Verificati
38、on of contact resistance . 19 8.4.5 Temperature rise test 20 8.4.6 Short-time withstand current test . 22 8.4.7 Ageing test (climatic sequence and corrosion test) 23 8.5 Verification of thermal characteristics 24 8.6 Verification of EMC characteristics 25 8.6.1 General . 25 8.6.2 Immunity 25 8.6.3 E
39、mission 25 Annex A (informative) Structure of a PCB terminal block 26 Annex B (informative) Additional Information to be specified between manufacturer and user . 27 Annex C (informative) Examples of PCBs and PCB terminal blocks for high current application 28 Bibliography 30 Figure 1 Test assembly
40、for the measurement of contact resistance and temperature rise . 20 Figure 2 Example of wiring structure of a multi-tier PCB terminal block 21 Figure 3 Test assembly for the measurement of short-time withstand current . 23 Figure 4 Test sequence . 24 Figure A.1 Structure of a PCB terminal block . 26
41、 Figure C.1 Structure of a high current PCB 28 Figure C.2 PCB terminal block with soldered connection to the PCB 28 Figure C.3 PCB terminal block with screwed connection to the PCB 29 Table 1 Standard cross-sections of copper conductors 11 Table 2 Relationship between maximum cross-section and conne
42、cting capacity of PCB terminal blocks 12 Table 3 Standards for clamping units and connecting methods 14 Table 4 Impulse withstand test voltages . 19 Table 5 Dielectric test voltages corresponding to the rated insulation voltage 19 Table 6 Length of connectable conductors and conductor loops . 21 Tab
43、le 7 Examples of cross-sectional distribution of interconnections on printed circuit boards 22 BS EN 60947-7-4:2013 6 60947-7-4 IEC:2013 INTRODUCTION This standard IEC 60947-7-4 for PCB terminal blocks covers not only the terminal block requirements according to IEC 60947-7 series but also takes int
44、o account the specifications of connectors according to IEC 61984 as the requirements for both components are highly similar due to equivalent applications. BS EN 60947-7-4:201360947-7-4 IEC:2013 7 LOW-VOLTAGE SWITCHGEAR AND CONTROLGEAR Part 7-4: Ancillary equipment PCB terminal blocks for copper co
45、nductors 1 General 1.1 Scope This part of IEC 60947 specifies requirements for PCB terminal blocks primarily intended for industrial or similar use. Mounting and fixing on the printed circuit board is made by soldering, press-in or equivalent methods to provide electrical and mechanical connection b
46、etween copper conductors and the printed circuit board. This standard applies to PCB terminal blocks intended to connect copper conductors, with or without special preparation, having a cross-section between 0,05 mm2and 300 mm2(AWG 30/600 kcmil), intended to be used in circuits of a rated voltage no
47、t exceeding 1 000 V a.c. up to 1 000 Hz or 1 500 V d.c. NOTE 1 Large cross section terminal blocks are dedicated to specific design of high current PCBs. The range up to 300 mm is kept to cover any possible application. Examples of high current PCBs and PCB terminal blocks are shown in Annex C. NOTE
48、 2 AWG is the abbreviation of “American Wire Gage” (Gage (US) = Gauge (UK); kcmil = 1 000 cmil; 1 cmil = 1 circular mil = surface of a circle having a diameter of 1 mil; 1 mil = 1/1 000 inch. This standard may be used as a guide for special types of PCB terminal blocks with components, such as disco
49、nnect units, integrated cartridge fuse-links and the like. If applicable, in this standard the term “clamping unit” is used instead of “terminal”. This is taken into account in case of references to IEC 60947-1. 1.2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including
