1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationArc welding equipmentPart 9: Installation and useBS EN 60974-9:2010National forewordThis British Standard is the UK implementation of EN 60974-9:2010. It isidentical to IEC 60974
2、-9:2010. It supersedes DD CLC/TS 62081:2002 which iswithdrawn.The UK participation in its preparation was entrusted to Technical CommitteeWEE/6, Electric arc welding equipment.A list of organizations represented on this committee can be obtained onrequest to its secretary.This publication does not p
3、urport to include all the necessary provisions of acontract. Users are responsible for its correct application. BSI 2010ISBN 978 0 580 60939 8ICS 25.160.30Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of the St
4、andardsPolicy and Strategy Committee on 30 April 2010.Amendments issued since publicationAmd. No. Date Text affectedBRITISH STANDARDBS EN 60974-9:2010EUROPEAN STANDARD EN 60974-9 NORME EUROPENNE EUROPISCHE NORM March 2010 CENELEC European Committee for Electrotechnical Standardization Comit Europen
5、de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central Secretariat: Avenue Marnix 17, B - 1000 Brussels 2010 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 60974-9:2010 E ICS 25.160.30 Supersed
6、es CLC/TS 62081:2002English version Arc welding equipment - Part 9: Installation and use (IEC 60974-9:2010) Matriel de soudage larc - Partie 9: Installation et utilisation (CEI 60974-9:2010) Lichtbogenschweieinrichtungen - Teil 9: Errichten und Betreiben (IEC 60974-9:2010) This European Standard was
7、 approved by CENELEC on 2010-03-01. 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
8、 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 la
9、nguage 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, Croatia, Cyprus, the Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland,
10、 Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. BS EN 60974-9:2010EN 60974-9:2010 - 2 - Foreword The text of document 26/404/FDIS, future edition 1 of IEC 60974-9, prepared by IEC
11、 TC 26, Electric welding, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as EN 60974-9 on 2010-03-01. This standard supersedes CLC/TS 62081:2002. The following major differences with respect to CLC/TS 62081:2002 are to be noted: 4.3.3 Welding cables: Now dimensions are re
12、commended. 5 Electromagnetic compatibility (EMC): this is completely new. 6 Electromagnetic fields (EMF): this is completely new. 7.3 Inspection and maintenance of the welding installation: There is now a differentiation between periodical and routine inspection. Attention is drawn to the possibilit
13、y that some of the elements of this document may be the subject of patent rights. CEN and CENELEC shall not be held responsible for identifying any or all such patent rights. The following dates were fixed: latest date by which the EN has to be implemented at national level by publication of an iden
14、tical national standard or by endorsement (dop) 2010-12-01 latest date by which the national standards conflicting with the EN have to be withdrawn (dow) 2013-03-01 Annex ZA has been added by CENELEC. _ BS EN 60974-9:2010- 3 - EN 60974-9:2010 Endorsement notice The text of the International Standard
15、 IEC 60974-9:2010 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 standards indicated: IEC 60204-1 NOTE Harmonized as EN 60204-1. IEC 60364-4-41 NOTE Harmonized as HD 60364-4-41. IEC 6097
16、4-2 NOTE Harmonized as EN 60974-2. IEC 60974-3 NOTE Harmonized as EN 60974-3. IEC 60974-5:2007 NOTE Harmonized as EN 60974-5:2008 (not modified). IEC 60974-7 NOTE Harmonized as EN 60974-7. IEC 60974-8 NOTE Harmonized as EN 60974-8. IEC 61008 series NOTE Harmonized in EN 61008 series (partially modif
17、ied). IEC 61009 series NOTE Harmonized in EN 61009 series (partially modified). IEC 61140 NOTE Harmonized as EN 61140. ISO 11611 NOTE Harmonized as EN ISO 11611. _ BS EN 60974-9:2010EN 60974-9:2010 - 4 - Annex ZA (normative) Normative references to international publications with their corresponding
18、 European publications The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. NOTE When an international
19、 publication has been modified by common modifications, indicated by (mod), the relevant EN/HD applies. Publication Year Title EN/HD Year IEC 60245-6 - Rubber insulated cables - Rated voltages up to and including 450/750 V - Part 6: Arc welding electrode cables - - IEC/TR 60755 - General requirement
20、s for residual current operated protective devices - - IEC 60974-1 2005 Arc welding equipment - Part 1: Welding power sources EN 60974-1 2005 IEC 60974-4 - Arc welding equipment - Part 4: In-service inspection and testing EN 60974-4 - IEC 60974-6 - Arc welding equipment - Part 6: Limited duty manual
21、 metal arc welding power sources EN 60974-6 - IEC 60974-10 - Arc welding equipment - Part 10: Electromagnetic compatibility (EMC) requirements EN 60974-10 - IEC 60974-11 - Arc welding equipment - Part 11: Electrode holders EN 60974-11 - IEC 60974-12 - Arc welding equipment - Part 12: Coupling device
22、s for welding cables EN 60974-12 - BS EN 60974-9:2010 2 60974-9 IEC:2010(E) CONTENTS 1 Scope.6 2 Normative references6 3 Terms and definitions .6 4 Installation8 4.1 General .8 4.2 Supply circuit.8 4.2.1 Selection of supply cables8 4.2.2 Supply disconnecting device 8 4.2.3 Emergency stopping device8
23、 4.3 Welding circuit.9 4.3.1 Isolation from the input supply9 4.3.2 Summation of no-load voltages 9 4.3.3 Welding cables 9 4.3.4 Connection between the welding power source and the workpiece9 4.3.5 Earthing of the workpiece.10 4.3.6 Location of gas cylinders11 5 Electromagnetic compatibility (EMC) .
24、11 5.1 General .11 5.2 Assessment of area.11 5.3 Methods of reducing emissions11 5.3.1 Public supply system11 5.3.2 Maintenance of arc welding equipment.12 5.3.3 Welding cables 12 5.3.4 Equipotential bonding.12 5.3.5 Earthing of the workpiece.12 5.3.6 Screening and shielding.12 6 Electromagnetic fie
25、lds (EMF) 12 7 Use 13 7.1 General requirements 13 7.2 Connection between several welding power sources 13 7.3 Inspection and maintenance of the welding installation.13 7.3.1 Periodical inspection13 7.3.2 Routine inspection .13 7.4 Disconnection of welding power sources and/or welding circuits.14 7.5
26、 Guards 14 7.6 Information for operators .14 7.7 Protective measures 14 7.7.1 Extraneous conductive parts in the welding area 14 7.7.2 Protection against electric shock14 7.8 Isolation of the welding circuit from the workpiece and earth when not in use .14 7.9 Voltage between electrode holders or to
27、rches 15 7.10 Welding in an environment with increased hazard of electric shock 17 7.11 Use of shoulder slings .17 7.12 Welding at elevated positions 18 BS EN 60974-9:201060974-9 IEC:2010(E) 3 7.13 Welding with suspended welding equipment.18 Annex A (informative) Hazards associated with arc welding
28、19 Annex B (informative) Voltage drops in the welding circuit 25 Bibliography27 Figure 1 Example of d.c. voltage between electrode holders or torches.15 Figure 2 Example of a.c. voltage between electrode holders or torches Single-phase supply from the same pair of lines of a three-phase mains supply
29、16 Figure 3 Example of a.c. voltage between electrode holders or torches Single-phase supply from different pairs of lines of a three-phase mains supply16 Figure 4 Example of a.c. voltage between electrode holders connected between different lines of output17 Figure A.1 Steps for the control of weld
30、ing fume.22 Figure A.2 Steps of operation for work in confined spaces 24 Figure B.1 Example of MIG/MAG equipment.25 Table 1 Current ratings for copper welding cables.9 Table B.1 Voltage drop in copper and aluminium welding cables at normal and elevated temperatures.26 BS EN 60974-9:2010 6 60974-9 IE
31、C:2010(E) ARC WELDING EQUIPMENT Part 9: Installation and use 1 Scope This part of IEC 60974 is applicable to the installation and use of equipment for arc welding and allied processes designed in accordance with safety requirements of IEC 60974-1, IEC 60974-6 or equivalent. This part of IEC 60974 is
32、 applicable for the guidance of instructors, operators, welders, managers, and supervisors in the safe installation and use of equipment for arc welding and allied processes and the safe performance of welding and cutting operations. National and local regulations take precedence over this part of I
33、EC 60974. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. IEC 60245-6, Rub
34、ber insulated cables Rated voltages up to and including 450/750 V Part 6: Arc welding electrode cables IEC/TR 60755, General requirements for residual current operated protective devices IEC 60974-1:2005, Arc welding equipment Part 1: Welding power sources IEC 60974-4, Arc welding equipment Part 4:
35、In-service inspection and testing IEC 60974-6, Arc welding equipment Part 6: Limited duty manual metal arc welding power sources IEC 60974-10, Arc welding equipment Part 10: Electromagnetic compatibility (EMC) requirements IEC 60974-11, Arc welding equipment Part 11: Electrode holders IEC 60974-12,
36、Arc welding equipment Part 12: Coupling devices for welding cables 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 welding circuit circuit that includes all conductive material through which the welding current is intended to flow BS EN 60974
37、-9:201060974-9 IEC:2010(E) 7 NOTE 1 In arc welding, the arc is a part of the welding circuit. NOTE 2 In certain arc welding processes, the arc may be established between two electrodes. In such a case, the workpiece is not necessarily a part of the welding circuit. IEC 60974-1:2005, 3.11 3.2 extrane
38、ous conductive part conductive part not forming part of the electrical installation and liable to introduce an electric potential, generally the earth potential NOTE Electrical installation includes the welding circuit. 3.3 workpiece metal piece or pieces on which welding or allied processes are per
39、formed 3.4 protective clothing and accessories protective clothing and accessories (e.g. gloves, hand shields, head masks and filter lenses) used in order to diminish electric shock risks and the effects of fume and spatter and to protect the skin and eyes against arc radiation 3.5 environments with
40、 increased hazard of electric shock environments where the hazard of electric shock by arc welding is increased in relation to normal arc welding conditions NOTE 1 Such environments are found for example a) in locations in which freedom of movement is restricted, so that the operator is forced to pe
41、rform the welding in a cramped (for example kneeling, sitting, lying) position with physical contact with conductive parts; b) in locations which are fully or partially limited by conductive elements and in which there is a high risk of unavoidable or accidental contact by the operator; c) in wet, d
42、amp or hot locations where humidity or perspiration considerably reduces the skin resistance of the human body and the insulating properties of accessories. NOTE 2 Environments with increased hazard of electric shock are not meant to include places where electrically conductive parts in the near vic
43、inity of the operator which can cause increased hazard have been insulated. IEC 60974-1:2005, 3.46 3.6 industrial and professional use use intended only for experts or instructed persons IEC 60974-1:2005, 3.2 3.7 expert competent person skilled person person who can judge the work assigned and recog
44、nize possible hazards on the basis of professional training, knowledge, experience and knowledge of the relevant equipment NOTE Several years of practice in the relevant technical field may be taken into consideration in assessment of professional training. IEC 60974-1:2005, 3.3 BS EN 60974-9:2010 8
45、 60974-9 IEC:2010(E) 3.8 wire feeder equipment that delivers filler wire to the arc or weld zone which includes the wire-feed control and means to apply motion to the filler wire and may also include the filler wire supply IEC 60974-5:2007, 3.11 3.9 auxiliary power output circuit of a welding power
46、source designed to provide electrical power to auxiliary equipment 4 Installation 4.1 General Welding equipment used in arc welding installations shall be intended for the purpose and shall be built in accordance with IEC 60974-1, IEC 60974-4, IEC 60974-6, IEC 60974-10, IEC 60974-11 and IEC 60974-12
47、 (see Clause 2), as given on the rating plate. Electromagnetic compatibility (EMC) requirements shall be taken into consideration during installation, see Clause 5. The requirements of national and local regulations shall be taken into consideration during installation, including grounding or protec
48、tive earth connections, fuses, supply disconnecting device, type of supply circuit, etc. Read the manufacturers instruction manual before installing the equipment. Full use shall be made of the technical information relevant to the welding equipment. Specific advice may be obtained from the welding
49、equipment manufacturer if necessary. 4.2 Supply circuit 4.2.1 Selection of supply cables Supply cables for welding equipment and their overload protection, if not provided by the manufacturer, shall be selected in accordance with the information given in the manufacturers instruction manual. Supply cables shall be placed, so that they cannot be damaged in use. If that cannot be achieved, a sensitive residual current circuit breaker, capable o
