1、BSI Standards PublicationArc welding equipmentPart 5: Wire feedersBS EN 60974-5:2013National forewordThis British Standard is the UK implementation of EN 60974-5:2013. It is identical to IEC 60974-5:2013. It supersedes BS EN 60974-5:2008 which is withdrawn.The UK participation in its preparation was
2、 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 the necessary provisions ofa contract. Users are responsible for its correct applic
3、ation. The British Standards Institution 2013.Published by BSI Standards Limited 2013ISBN 978 0 580 75564 4ICS 25.160.01Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committe
4、e on 31 August 2013.Amendments/corrigenda issued since publicationDate Text affectedBRITISH STANDARDBS EN 60974-5:2013EUROPEAN STANDARD EN 60974-5 NORME EUROPENNE EUROPISCHE NORM August 2013 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechniq
5、ue Europisches Komitee fr Elektrotechnische Normung Management Centre: Avenue Marnix 17, B - 1000 Brussels 2013 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 60974-5:2013 E ICS 25.160 Supersedes EN 60974-5:2008 English version A
6、rc welding equipment - Part 5: Wire feeders (IEC 60974-5:2013) Matriel de soudage larc - Partie 5: Dvidoirs (CEI 60974-5:2013) Lichtbogenschweieinrichtungen - Teil 5: Drahtvorschubgerte (IEC 60974-5:2013) This European Standard was approved by CENELEC on 2013-06-27. CENELEC members are bound to comp
7、ly 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 CEN-CENELEC
8、 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 Management Centre ha
9、s 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, Ireland, Italy, La
10、tvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. BS EN 60974-5:2013EN 60974-5:2013 - 2 - Foreword The text of document 26/503/FDIS, future edition 3 of IEC 60974-5, prepared by IEC/T
11、C 26 “Electric welding“ was submitted to the IEC-CENELEC parallel vote and approved by CENELEC as EN 60974-5:2013. The following dates are fixed: latest date by which the document has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2014-03
12、-27 latest date by which the national standards conflicting with the document have to be withdrawn (dow) 2016-06-27 This document supersedes EN 60974-5:2008. EN 60974-5:2013 includes the following significant technical changes with respect to EN 60974-5:2008: changes induced by the publication of EN
13、 60974-1:2012; addition of a new symbol for hot surface (as specified in Clause 9); determination of the maximum load in accordance with 10.7. This standard is to be read in conjunction with EN 60974-1. Attention is drawn to the possibility that some of the elements of this document may be the subje
14、ct 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 for Use within Certain Voltage Limits (LVD - 2006/95/EC). Endorsement notice The
15、 text of the International Standard IEC 60974-5:2013 was approved by CENELEC as a European Standard without any modification. In the official version, for Bibliography, the following note has to be added for the standard indicated: IEC 60974-6 NOTE Harmonised as EN 60974-6. BS EN 60974-5:2013- 3 - E
16、N 60974-5:2013 Annex ZA (normative) Normative 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 ed
17、ition cited applies. For undated references, 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 60050
18、-195 - International Electrotechnical Vocabulary (IEV) - Chapter 195: Earthing and protection against electric shock - - IEC 60529 - Degrees of protection provided by enclosures (IP Code) EN 60529 - IEC 60974-1 2012 Arc welding equipment - Part 1: Welding power sources EN 60974-1 2012 IEC 60974-7 -
19、Arc welding equipment - Part 7:Torches EN 60974-7 - IEC 60974-10 - Arc welding equipment - Part 10: Electromagnetic compatibility (EMC) requirements EN 60974-10 - IEC 61140 - Protection against electric shock - Common aspects for installation and equipment EN 61140 - BS EN 60974-5:2013 2 60974-5 IEC
20、:2013 CONTENTS 1 Scope . 6 2 Normative references . 6 3 Terms and definitions . 6 4 Environmental conditions 7 5 Tests 7 5.1 Test conditions 7 5.2 Measuring instruments 7 5.3 Conformity of components . 8 5.4 Type tests . 8 5.5 Routine tests . 8 6 Protection against electric shock 8 6.1 Insulation 8
21、6.2 Protection against electric shock in normal service (direct contact) . 8 6.2.1 Protection provided by the enclosure . 8 6.2.2 Capacitors . 9 6.2.3 Automatic discharge of supply circuit capacitors 9 6.2.4 Isolation of the welding circuit 9 6.2.5 Welding circuit touch current . 9 6.2.6 Touch curre
22、nt in normal condition 9 6.3 Protection against electric shock in case of a fault condition (indirect contact) 10 6.3.1 Protective provisions . 10 6.3.2 Isolation between windings of the supply circuit and the welding circuit 10 6.3.3 Internal conductors and connections 10 6.3.4 Isolation of the wel
23、ding circuit from the frame 10 6.3.5 Touch current in fault condition 10 6.4 Supply voltage . 10 6.5 Protective provisions . 10 6.6 Overcurrent protection of the supply circuit 11 6.7 Cable anchorage . 11 6.8 Auxiliary power supply . 11 6.9 Inlet openings 11 6.10 Control circuits 11 6.11 Isolation o
24、f hanging means 11 7 Liquid cooling system . 11 8 Shielding gas supply. 11 9 Thermal requirements . 12 10 Mechanical provisions 12 10.1 Wire feeder . 12 10.2 Enclosure strength 12 10.3 Handling means 13 10.4 Drop withstand 13 10.5 Tilting stability . 13 10.6 Filler wire supply . 13 BS EN 60974-5:201
25、360974-5 IEC:2013 3 10.6.1 Filler wire supply mounting 13 10.6.2 Wire spool retaining device 13 10.6.3 Filler wire over-run 13 10.7 Feeding . 14 10.8 Protection against mechanical hazards 14 11 Rating plate 15 11.1 General . 15 11.2 Description 15 11.3 Contents 15 12 Indication of wire-feed speed 16
26、 13 Instructions and markings . 16 13.1 Instructions . 16 13.2 Markings . 17 Annex A (normative) Determination of the variation in wire-feed speed 18 Annex B (informative) Example for a rating plate of a stand-alone wire feeder . 20 Bibliography 21 Figure 1 Principle of the rating plate of stand-alo
27、ne wire feeder . 15 Table 1 Minimum degree of protection . 9 BS EN 60974-5:2013 6 60974-5 IEC:2013 ARC WELDING EQUIPMENT Part 5: Wire feeders 1 Scope This part of IEC 60974 specifies safety and performance requirements for industrial and professional equipment used in arc welding and allied processe
28、s to feed filler wire. The wire feeder may be a stand-alone unit which may be connected to a separate welding power source or one where the welding power source and the wire feeder are housed in a single enclosure. The wire feeder may be suitable for manually or mechanically guided torches. This par
29、t of IEC 60974 is not applicable to spool-on torches that are covered by IEC 60974-7. This part of IEC 60974 is not applicable to wire feeders which are designed mainly for use by laymen and design in accordance with IEC 60974-6. NOTE 1 Typical allied processes are electric arc cutting and arc spray
30、ing. NOTE 2 This standard does not include electromagnetic compatibility (EMC) requirements. 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 applie
31、s. For undated references, the latest edition of the referenced document (including any amendments) applies. IEC 60050-195, International Electrotechnical Vocabulary (IEV) Part 195: Earthing and protection against electric shock IEC 60529, Degrees of protection provided by enclosures (IP Code) IEC 6
32、0974-1:2012, Arc welding equipment Part 1: Welding power sources IEC 60974-7, Arc welding equipment Part 7: Torches IEC 60974-10, Arc welding equipment Part 10: Electromagnetic compatibility (EMC) requirements IEC 61140, Protection against electric shock Common aspects for installation and equipment
33、 3 Terms and definitions For the purposes of this document, the terms and definitions given in IEC 60050-195, IEC 60974-1, and IEC 60974-7, as well as the following apply. BS EN 60974-5:201360974-5 IEC:2013 7 3.1 drive roll roll in contact with the filler wire and which transfers mechanical power to
34、 the filler wire 3.2 filler wire supply source of filler wire and means for dispensing filler wire to the feeding mechanism 3.3 liner replaceable component that guides the filler wire 3.4 maximum load maximum value of the force required to feed the specified types and sizes of filler wires over the
35、rated speed range 3.5 rated speed range speed range of the filler wire assigned by the manufacturer for each specified size of filler wire 3.6 rated supply current I1r.m.s. value of an input current to the wire feeder at maximum load 3.7 wire-feed control electrical or mechanical apparatus, or both,
36、 which control(s) the speed of the filler wire, the sequence of operations and other services as required Note 1 to entry: The wire feed control may be integral with the wire feeder or in a separate enclosure. 3.8 wire feeder equipment that delivers filler wire to the arc or weld zone which includes
37、 means to apply motion to the filler wire Note 1 to entry: The wire feeder may also include the wire-feed control, the filler wire supply, devices for gas control, indicators and remote connectors. 4 Environmental conditions As specified in Clause 4 of IEC 60974-1:2012. 5 Tests 5.1 Test conditions A
38、s specified in 5.1 of IEC 60974-1:2012. 5.2 Measuring instruments The accuracy of measuring instruments shall be: BS EN 60974-5:2013 8 60974-5 IEC:2013 a) electrical measuring instruments: class 1 (1 % of full-scale reading), except for the measurement of insulation resistance and dielectric strengt
39、h where the accuracy of the instruments is not specified, but shall be taken into account for the measurement; b) thermometer: 2 K; c) tachometer: 1 % of full-scale reading; d) pressure measuring instruments: class 2,5 (2,5 % of full-scale reading). 5.3 Conformity of components As specified in 5.3 o
40、f IEC 60974-1:2012. 5.4 Type tests All type tests given below shall be carried out on the same wire feeder. As a condition of conformity the type tests given below shall be carried out in the following sequence: a) visual inspection (as defined in 3.7 of IEC 60974-1:2012); b) insulation resistance (
41、as specified in 6.1.4 of IEC 60974-1:2012 (preliminary check); c) enclosure (as specified in 14.2 of IEC 60974-1:2012); d) handling means (as specified in 10.3); e) drop withstand (as specified in 10.4); f) protection provided by the enclosure (as specified in 6.2.1); g) insulation resistance (as sp
42、ecified in 6.1.4 of IEC 60974-1:2012); h) dielectric strength (as specified in 6.1.5 of IEC 60974-1:2012); i) visual inspection (as defined in 3.7 of IEC 60974-1:2012). The other tests included in this standard and not listed here shall be carried out, but may be completed in any convenient sequence
43、. 5.5 Routine tests All routine tests given below shall be carried out on each wire feeder in the following sequence: a) visual inspection in accordance with manufacturers specification; b) continuity of the protective circuit, if applicable (as specified in 10.5.3 of IEC 60974-1:2012); c) dielectri
44、c strength (as specified in 6.1.5 of IEC 60974-1:2012); 6 Protection against electric shock 6.1 Insulation As specified in 6.1 of IEC 60974-1:2012. 6.2 Protection against electric shock in normal service (direct contact) 6.2.1 Protection provided by the enclosure Wire feeders shall have a minimum de
45、gree of protection in accordance with Table 1 using IEC 60529 test procedures and conditions. BS EN 60974-5:201360974-5 IEC:2013 9 Table 1 Minimum degree of protection Component Designed for indoor use Designed for outdoor use Motor and control supplied by a voltage SELV IP2X IP23S Motor and control
46、 supplied by a voltage SELV IP21S IP23S Live parts at welding potential for wire feeders used with manually guided torches (for example, filler wire, wire spool, drive rolls) IPXX IPX3 Live parts at welding potential for wire feeders used with mechanically guided torches (for example, filler wire, w
47、ire spool, drive rolls) IPXX IPXX NOTE Additional requirement for mechanical hazards are given in 10.8. Wire feeders with degree of protection IP23S may be stored but are not intended to be used outside during precipitation unless sheltered. Adequate drainage shall be provided by the enclosure. Reta
48、ined water shall not interfere with the correct operation of the equipment or impair safety. The quantity of water that may enter the enclosure during the following test is not limited. Conformity shall be checked by the following test: The filler wire shall be fed into the drive system and all exte
49、rnal connectors shall be connected or covered. The wire feeder shall be subjected to the appropriate water test without being energized. Immediately after the test, the wire feeder shall be moved to a safe environment and subjected to the insulation resistance test, listed in 5.4 g) and dielectric strength test, listed in 5.4 h). When live parts at welding potential are protected against precipitation, the filler wire shall show no visual wetness after the test. 6.2.2 Capacitors As specified in 6
