EN 62135-1-2015 en Resistance welding equipment - Part 1 Safety requirements for design manufacture and installation (Incorporating corrigendum February 2016).pdf

1、BSI Standards PublicationResistance welding equipmentPart 1: Safety requirements for design, manufacture and installationBS EN 62135-1:2015Incorporating corrigendum February 2016National forewordThis British Standard is the UK implementation of EN 62135-1:2015. It isidentical to IEC 62135-1:2015, in

2、corporating corrigendum February 2016. The UK participation in its preparation was entrusted to TechnicalCommittee WEE/6, Electric arc welding equipment.A list of organizations represented on this committee can be obtained onrequest to its secretary.This publication does not purport to include all t

3、he necessary provisions ofa contract. Users are responsible for its correct application. The British Standards Institution 2016.Published by BSI Standards Limited 2016ISBN 978 0 580 93586 2ICS 25.160.30Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Stand

4、ard was published under the authority of theStandards Policy and Strategy Committee on 31 July 2015.Amendments/corrigenda issued since publicationDate Text affectedBRITISH STANDARDBS EN 62135-1:201531 March 2016 Implementation of IEC corrigendum February 2016:Subclause 6.4.2.7 modifiedIt supersedes

5、BS EN 62135-1:2008 which is withdrawn.EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 62135-1 July 2015 ICS 25.160 SupersedesEN 62135-1:2008English Version Resistance welding equipment - Part 1: Safety requirements for design, manufacture and installation (IEC 62135-1:2015) Matriels de soudage

6、par rsistance - Partie 1: Exigences de scurit pour la conception, la fabrication et linstallation (IEC 62135-1:2015) Widerstandsschweieinrichtungen - Teil 1: Sicherheitsanforderungen fr die Konstruktion, Herstellung und Errichtung (IEC 62135-1:2015) This European Standard was approved by CENELEC on

7、2015-06-11. 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

8、be obtained on application 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 not

9、ified to the CEN-CENELEC 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,

10、 Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. European Committee for Electrotechnical Standardization Comit Europen de Normalisation E

11、lectrotechnique Europisches Komitee fr Elektrotechnische Normung CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2015 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members. Ref. No. EN 62135-1:2015 E Incorporating corrigendum February

12、 2016EN 62135-1:2015 2 European foreword The text of document 26/558/FDIS, future edition 2 of IEC 62135-1, prepared by IEC/TC 26 “Electric welding“ was submitted to the IEC-CENELEC parallel vote and approved by CENELEC as EN 62135-1:2015. The following dates are fixed: latest date by which the docu

13、ment has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2016-03-11 latest date by which the national standards conflicting with the document have to be withdrawn (dow) 2018-06-11 This document supersedes EN 62135-1:2008. Attention is draw

14、n to the possibility that some of the elements of this document may be the subject of patent rights. CENELEC and/or CEN shall not be held responsible for identifying any or all such patent rights. This standard covers the Principle Elements of the Safety Objectives for Electrical Equipment Designed

15、for Use within Certain Voltage Limits (LVD - 2006/95/EC). Endorsement notice The text of the International Standard IEC 62135-1:2015 was approved by CENELEC as a European Standard without any modification. In the official version, for Bibliography, the following notes have to be added for the standa

16、rds indicated: IEC 60085 NOTE Harmonized as EN 60085. IEC 60112 NOTE Harmonized as EN 60112. IEC 60364 NOTE Harmonized in HD 384 / HD 60364 series (partly modified). IEC 60990 NOTE Harmonized as EN 60990. IEC 62135-2 NOTE Harmonized as EN 62135-2. ISO 5826 NOTE Harmonized as EN ISO 5826. ISO 5828 NO

17、TE Harmonized as EN ISO 5828. ISO 8205-1 NOTE Harmonized as EN ISO 8205-1. ISO 8205-2 NOTE Harmonized as EN ISO 8205-2. BS EN 62135-1:2015EN 62135-1:2015 3 ISO 12100 NOTE Harmonized as EN ISO 12100. ISO 13732-1 NOTE Harmonized as EN ISO 13732-1. IEC 13732 NOTE Harmonized in EN 13732 series (not modi

18、fied). ISO 14121-1 1)NOTE Harmonized as EN ISO 14121-1 1). 1) Withdrawn. BS EN 62135-1:2015EN 62135-1:2015 4 Annex ZA (normative) Normative references to international publications with their corresponding European publications The following documents, in whole or in part, are normatively referenced

19、 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 any amendments) applies. NOTE 1 When an International Publication has been modified by common modificati

20、ons, indicated by (mod), the relevant EN/HD applies. NOTE 2 Up-to-date information on the latest versions of the European Standards listed in this annex is available here: www.cenelec.eu. Publication Year Title EN/HD Year IEC 60204-1 (mod) 2005 Safety of machinery - Electrical equipment of machines

21、- Part 1: General requirements EN 60204-1 2006 - - + corrigendum Feb. 2010 IEC 60364-4-41 (mod) 2005 Low-voltage electrical installations - Part 4-41: Protection for safety - Protection against electric shock HD 60364-4-41 2007 - - + corrigendum Jul. 2007 IEC 60364-6 - Low voltage electrical install

22、ations - Part 6: Verification HD 60364-6 - IEC 60417-DB - Graphical symbols for use on equipment - - IEC 60445 - Basic and safety principles for man-machine interface, marking and identification - Identification of equipment terminals, conductor terminations and conductors EN 60445 - IEC 60529 - Deg

23、rees of protection provided by enclosures (IP Code) EN 60529 - IEC 60664-1 2007 Insulation coordination for equipment within low-voltage systems - Part 1: Principles, requirements and tests EN 60664-1 2007 IEC 60664-3 - Insulation coordination for equipment within low-voltage systems - Part 3: Use o

24、f coating, potting or moulding for protection against pollution EN 60664-3 - IEC 61140 - Protection against electric shock - Common aspects for installation and equipment EN 61140 - BS EN 62135-1:2015EN 62135-1:2015 5 Publication Year Title EN/HD Year ISO 669 - Resistance welding - Resistance weldin

25、g equipment - Mechanical and electrical requirements - - ISO 13849-1 - Safety of machinery - Safety-related parts of control systems - Part 1: General principles for design EN ISO 13849-1 - BS EN 62135-1:2015 2 IEC 62135-1:2015 IEC 2015 CONTENTS FOREWORD . 6 1 Scope 8 2 Normative references 8 3 Term

26、s and definitions 9 4 Environmental conditions . 11 5 Tests . 11 5.1 Test condition . 11 5.2 Measuring instruments 11 5.3 Type tests . 12 5.4 Routine tests. 12 6 Protection against electric shock . 12 6.1 General . 12 6.2 Insulation 13 6.2.1 General . 13 6.2.2 Clearances 13 6.2.3 Creepage distances

27、. 14 6.2.4 Insulation resistance 16 6.2.5 Dielectric strength 16 6.2.6 Welding circuit touch current . 18 6.2.7 Liquid cooling 18 6.3 Protection against electric shock in normal service (direct contact) . 19 6.3.1 General . 19 6.3.2 Rated no-load voltage at the output . 19 6.3.3 Protection provided

28、by barriers or the enclosure 20 6.3.4 Capacitors . 21 6.3.5 Automatic discharge of input capacitors . 21 6.3.6 Protective conductor current under normal condition 22 6.3.7 Touch current in normal condition 22 6.4 Protection against electric shock in case of a fault condition (indirect contact) 22 6.

29、4.1 General . 22 6.4.2 Protective provisions for welding circuit . 24 6.4.3 Internal conductors and connections 36 6.4.4 Touch current in fault condition 36 6.4.5 DC resistance welding equipment operating at mains frequency 37 6.4.6 DC resistance welding equipment operating at medium frequency . 37

30、6.4.7 Continuity of the protective bonding circuit 37 6.5 Additional user requirements. 38 6.6 Supply voltage 38 6.7 Conductors of the welding circuit 38 7 Thermal requirements 38 7.1 Heating test 38 7.1.1 Test conditions 38 7.1.2 Tolerances of the test parameters . 39 7.1.3 Beginning of the heating

31、 test . 40 7.1.4 Duration of the test 40 BS EN 62135-1:2015IEC 62135-1:2015 IEC 2015 3 7.2 Temperature measurement . 40 7.2.1 Measurements conditions 40 7.2.2 Surface temperature sensor . 40 7.2.3 Resistance 40 7.2.4 Embedded temperature sensor 41 7.2.5 Determination of the ambient temperature (ta)

32、. 41 7.2.6 Determination of cooling liquid temperature (ta) . 41 7.2.7 Recording of temperatures 41 7.3 Limits of temperature rise . 42 7.3.1 Windings . 42 7.3.2 External surfaces . 42 7.3.3 Other components . 44 7.4 Protection from thermal hazards in normal service (direct contact) 44 7.4.1 General

33、 . 44 7.4.2 Identification of hot surfaces 44 7.4.3 Protection provided by insulation or other barriers . 45 7.4.4 Protection provided by supplemental cooling . 45 8 Abnormal operation . 45 8.1 General requirements . 45 8.2 Stalled fan test 45 8.3 Cooling system failure . 45 8.4 Overload test 46 9 P

34、rovisions against mechanical hazards . 46 9.1 General . 46 9.2 Risk analysis. 46 9.2.1 General . 46 9.2.2 Ready-to-use equipment as in delivery state 46 9.2.3 Equipment not ready to use as in delivery state . 46 9.2.4 Equipment not ready for use and designed to be incorporated in more complex equipm

35、ent 47 9.3 Measures 47 9.3.1 Minimum measures 47 9.3.2 Additional measures 47 9.4 Conformity of components 48 9.5 Starting for manual operated equipment 48 10 Instructions and markings 49 10.1 Instructions . 49 10.2 Markings . 49 10.3 Marking of terminals . 49 Annex A (informative) Nominal voltages

36、of supply networks . 51 Annex B (normative) Construction of supply circuit terminals . 52 B.1 Size of terminals . 52 B.2 Spacings between supply circuit terminals 52 B.3 Connections at the terminals . 53 B.4 Construction of the terminals 53 B.5 Fixing of the terminals . 53 Annex C (normative) Touch

37、current measurement in fault condition . 54 Annex D (informative) Extrapolation of temperature to time of shutdown 56 BS EN 62135-1:2015 4 IEC 62135-1:2015 IEC 2015 Annex E (informative) Example of risk analysis and safety level requirement . 57 E.1 General . 57 E.2 Monitored hazards 57 E.3 General

38、measures 57 E.4 Typical hazards by type of equipment . 57 E.4.1 General . 57 E.4.2 Spot welding 58 E.4.3 Projection welding . 59 E.4.4 Seam welding 60 E.4.5 Butt welding . 60 Annex F (informative) Indirect contact protection in resistance welding equipment . 61 F.1 Protection against indirect contac

39、t by automatic disconnection of the supply 61 F.1.1 General . 61 F.1.2 TN system . 61 F.1.3 TT systems 62 F.2 Automatic disconnection of supply in single phase a.c. current equipment 63 F.2.1 TN system . 63 F.2.2 TT systems 64 F.3 Automatic disconnection of supply in d.c. current equipment operating

40、 at medium frequency (inverter equipment) 64 F.3.1 TN system . 64 F.3.2 TT systems 65 Bibliography 68 Figure 1 Measurement of welding circuit touch current . 18 Figure 2 Measurement of rms values . 19 Figure 3 Example of metal screen between windings of the supply circuit and the welding circuit . 2

41、6 Figure 4 Example of protective conductor connected directly to the welding circuit (single-spot, a.c. current equipment) . 27 Figure 5 Example of protective conductor connected directly to welding circuits (multi-spot, a.c. current equipment) 27 Figure 6 Example of protective conductor connected d

42、irectly to welding circuits (medium-frequency equipment) . 28 Figure 7 Example of protective conductor connected to welding circuits through impedances 29 Figure 8 Example of protective conductor connected to welding circuits through auto-inductances 30 Figure 9 Example of protective conductor conne

43、cted to welding circuits through auto-inductances 30 Figure 10 Example of current operated RCD (a.c. current equipment) 31 Figure 11 Example of current operated RCD (medium-frequency equipment) . 32 Figure 12 Example of current operated residual current device and voltage relay . 33 Figure 13 Exampl

44、e of current operated residual current device and safety-voltage relay . 34 Figure 14 Example of safety voltage relay 35 Figure C.1 Measuring network for weighted touch current 54 BS EN 62135-1:2015IEC 62135-1:2015 IEC 2015 5 Figure C.2 Diagram for touch current measurement on fault condition at ope

45、rating temperature for single-phase connection of appliances other than those of class II . 55 Figure C.3 Diagram for touch current measurement on fault condition for three-phase four-wire system connection of appliances other than those of class II . 55 Figure E.1 Structure of a mounted machine . 5

46、8 Figure E.2 Structure of a hand-held welding gun 58 Figure E.3 Structure of projection welding machinery . 59 Figure E.4 Structure of seam welding machinery 60 Figure E.5 Structure of butt welding machinery 60 Figure F.1 Principle illustration of insulation fault . 61 Figure F.2 Illustrations of TN

47、 systems 62 Figure F.3 Illustrations of TT systems 63 Figure F.4 Typical fault current 65 Figure F.5 Time-to-voltage reference curve 67 Table 1 Minimum clearances for overvoltage category III . 13 Table 2 Minimum creepage distances 15 Table 3 Insulation resistance . 16 Table 4 Dielectric test voltag

48、es 17 Table 5 Minimum distance through insulation . 25 Table 6 Continuity of the protective bonding circuit 37 Table 7 Limits of temperature rise for windings 42 Table 8 Limits of temperature rise for external surfaces of hand-held equipment. 43 Table 9 Limits of temperature rise for external surfac

49、es of hand-guided equipment . 43 Table 10 Limits of temperature rise for external surfaces of fixed equipment 43 Table B.1 Range of conductor dimensions to be accepted by the supply circuit terminals . 52 Table B.2 Spacing between supply circuit terminals . 53 BS EN 62135-1:2015 6 IEC 62135-1:2015 IEC 2015 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ RESISTANCE WELDING EQUIPMENT Part 1: Safety requirements for design, manufacture