oSIST prEN IEC 60974-4:2024
(Main)Arc welding equipment - Part 4: Periodic inspection and testing
Arc welding equipment - Part 4: Periodic inspection and testing
Lichtbogenschweißeinrichtungen - Teil 4: Wiederkehrende Inspektion und Prüfung
Matériel de soudage à l'arc - Partie 4: Inspection et essais périodiques
Oprema za obločno varjenje - 4. del: Perodični pregledi in preskus
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SLOVENSKI STANDARD
01-julij-2024
Oprema za obločno varjenje - 4. del: Perodični pregledi in preskus
Arc welding equipment - Part 4: Periodic inspection and testing
Lichtbogenschweißeinrichtungen - Teil 4: Wiederkehrende Inspektion und Prüfung
Matériel de soudage à l'arc - Partie 4: Inspection et essais périodiques
Ta slovenski standard je istoveten z: prEN IEC 60974-4
ICS:
25.160.30 Varilna oprema Welding equipment
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
26/761/CDV
COMMITTEE DRAFT FOR VOTE (CDV)
PROJECT NUMBER:
IEC 60974-4 ED4
DATE OF CIRCULATION: CLOSING DATE FOR VOTING:
2024-06-07 2024-08-30
SUPERSEDES DOCUMENTS:
26/753/CD, 26/758/CC
IEC TC 26 : ELECTRIC WELDING
SECRETARIAT: SECRETARY:
Austria Mr Josef Feichtinger
OF INTEREST TO THE FOLLOWING COMMITTEES: PROPOSED HORIZONTAL STANDARD:
Other TC/SCs are requested to indicate their interest, if any,
in this CDV to the secretary.
FUNCTIONS CONCERNED:
EMC ENVIRONMENT QUALITY ASSURANCE SAFETY
SUBMITTED FOR CENELEC PARALLEL VOTING NOT SUBMITTED FOR CENELEC PARALLEL VOTING
Attention IEC-CENELEC parallel voting
The attention of IEC National Committees, members of
CENELEC, is drawn to the fact that this Committee Draft for
Vote (CDV) is submitted for parallel voting.
The CENELEC members are invited to vote through the
CENELEC online voting system.
This document is still under study and subject to change. It should not be used for reference purposes.
Recipients of this document are invited to submit, with their comments, notification of any relevant patent rights of which
they are aware and to provide supporting documentation.
Recipients of this document are invited to submit, with their comments, notification of any relevant “In Some Countries”
clauses to be included should this proposal proceed. Recipients are reminded that the CDV stage is the final stage for
submitting ISC clauses. (SEE AC/22/2007 OR NEW GUIDANCE DOC).
TITLE:
Arc welding equipment - Part 4: Periodic inspection and testing
PROPOSED STABILITY DATE: 2025
NOTE FROM TC/SC OFFICERS:
electronic file, to make a copy and to print out the content for the sole purpose of preparing National Committee positions.
You may not copy or "mirror" the file or printed version of the document, or any part of it, for any other purpose without
permission in writing from IEC.
IEC CDV 60974-4 © IEC 2024 2 26/761/CDV
1 CONTENTS
2 CONTENTS . 2
3 FOREWORD . 4
4 1 Scope . 6
5 2 Normative references . 6
6 3 Terms and definitions . 7
7 4 General requirements . 9
8 4.1 Qualification of personnel . 9
9 4.2 Test conditions . 9
10 4.3 Measuring instruments . 9
11 4.4 PERIODIC INSPECTION and testing . 9
12 4.5 MAINTENANCE . 9
13 4.6 Test after REPAIR . 9
14 4.7 Test sequence . 10
15 5 Protection against electrical shock . 10
16 5.1 VISUAL INSPECTION . 10
17 5.2 Continuity of the protective circuit . 10
18 5.3 Insulation resistance . 11
19 5.4 WELDING CIRCUIT TOUCH CURRENT. 12
20 5.5 TOUCH CURRENT in normal condition . 13
21 5.6 Protective conductor current . 13
22 5.7 NO-LOAD VOLTAGE (U ) . 14
23 6 Functional test . 16
24 6.1 General . 16
25 6.2 Supply-circuit on/off switching device . 16
26 6.3 Voltage-reducing device . 16
27 6.4 Magnetic gas valve . 16
28 6.5 Signal and control lamps . 16
29 7 Documentation . 17
30 7.1 Test report . 17
31 7.2 Labelling . 17
32 Annex A (informative) Check-list for the VISUAL INSPECTION . 18
33 Annex B (informative) Example of a test report after REPAIR . 19
34 Annex C (informative) Equipment not built in accordance with current IEC 60974-1 . 20
35 C.1 Welding equipment not built in accordance with IEC 60974-1 . 20
36 C.2 Determination of NO-LOAD VOLTAGE for welding equipment built according
37 to IEC 60974-1:1998+AMD1:2000 or earlier . 20
38 Annex D (normative) Battery-powered WELDING POWER SOURCES . 21
39 D.1 General . 21
40 D.2 Protection against electrical shock . 21
41 D.2.1 VISUAL INSPECTION . 21
42 D.2.2 Continuity of the protective circuit . 22
43 D.2.3 Insulation resistance . 22
44 D.2.4 WELDING CIRCUIT TOUCH CURRENT . 22
45 D.2.5 TOUCH CURRENT in normal condition . 22
46 D.2.6 Protective conductor current . 22
47 D.2.7 NO-LOAD VOLTAGE (U ) . 22
26/761/CDV 3 IEC CDV 60974-4 © IEC 2024
48 D.3 Functional tests . 22
50 Figure 1 - Example for the measurement of insulation resistance . 12
51 Figure 2 – Example for the measurement of WELDING CIRCUIT TOUCH CURRENT . 12
52 Figure 3 – Example for the measurement of TOUCH CURRENT in normal condition . 13
53 Figure 4 – Principles of protective conductor current measurement for single phase
54 equipment . 14
55 Figure 5 – Measurement of RMS values . 15
56 Figure 6 – Measurement of peak values . 15
58 Table 1 – Test sequence on used arc welding equipment. 10
59 Table 2 – Insulation resistance . 11
60 Table 3 – Allowable NO-LOAD VOLTAGES depending on the environment . 14
IEC CDV 60974-4 © IEC 2024 4 26/761/CDV
62 INTERNATIONAL ELECTROTECHNICAL COMMISSION
63 ____________
65 ARC WELDING EQUIPMENT –
67 Part 4: Periodic inspection and testing
69 FOREWORD
70 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
71 all national electrotechnical committees (IEC National Committees). The object of IEC is to promote
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79 agreement between the two organizations.
80 2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
81 consensus of opinion on the relevant subjects since each technical committee has representation from all
82 interested IEC National Committees.
83 3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
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87 4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
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90 the latter.
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94 6) All users should ensure that they have the latest edition of this publication.
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99 Publications.
100 8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
101 indispensable for the correct application of this publication.
102 9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of
103 patent rights. IEC shall not be held responsible for identifying any or all such patent rights.
104 International Standard IEC 60974-4 has been prepared by IEC technical committee 26:
105 Electric welding.
106 This fourth edition cancels and replaces the third edition published in 2016. It constitutes a
107 technical revision.
108 The main significant technical changes with respect to the previous edition are the following:
109 • Examples for the measurements in respect of EN 50699, Recurrent Test of Electrical
110 Equipment and EN 50678, General procedure for verifying the effectiveness of the
111 protective measures of electrical equipment after repair;
112 • Consideration of measuring equipment in respect of IEC 61557-series, Electrical safety in
113 low voltage distribution systems up to 1 000 V AC and 1 500 V DC - Equipment for testing,
114 measuring or monitoring of protective measures;
115 • More determinations of NO-LOAD VOLTAGE for welding equipment built according to IEC
116 60974-1:1998+AMD1:20002005 or earlier;
26/761/CDV 5 IEC CDV 60974-4 © IEC 2024
117 • New Annex D providing additional information to be considered when testing battery-
118 powered WELDING POWER SOURCES and connected chargers;
119 The text of this standard is based on the following documents:
FDIS Report on voting
121 Full information on the voting for the approval of this standard can be found in the report on
122 voting indicated in the above table.
123 This publication has been draf
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