IEC 60974-5:2019

IEC 60974-5 ®
Edition 4.0 2019-01
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Arc welding equipment –
Part 5: Wire feeders
Matériel de soudage à l’arc –
Partie 5: Dévidoirs
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IEC 60974-5 ®
Edition 4.0 2019-01
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Arc welding equipment –
Part 5: Wire feeders
Matériel de soudage à l’arc –
Partie 5: Dévidoirs
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 25.160.30 ISBN 978-2-8322-6499-7

– 2 – IEC 60974-5:2019 © IEC 2019
CONTENTS
FOREWORD . 4
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 6
4 Environmental conditions . 8
5 Tests . 8
5.1 Test conditions . 8
5.2 Measuring instruments . 8
5.3 Conformity of components . 8
5.4 Type tests . 8
5.5 Routine tests. 8
6 Protection against electric shock . 9
6.1 Insulation . 9
6.2 Protection against electric shock in normal service (direct contact) . 9
6.2.1 Protection provided by the enclosure . 9
6.2.2 Capacitors . 9
6.2.3 Automatic discharge of supply circuit capacitors . 9
6.2.4 Isolation of the welding circuit . 10
6.2.5 Welding circuit touch current . 10
6.2.6 Touch current in normal condition . 10
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 welding circuit from the frame . 11
6.3.5 Touch current in fault condition . 11
6.4 Power supply to external devices connected to the welding circuit . 11
6.5 Overcurrent protection of the supply circuit . 11
6.6 Cable anchorage . 11
6.7 Auxiliary power supply . 11
6.8 Inlet openings . 11
6.9 Welding circuit connections . 11
6.10 Control circuits . 12
6.11 Isolation of hanging means . 12
7 Liquid cooling system . 12
8 Shielding gas supply . 12
9 Thermal requirements . 13
10 Abnormal operation . 13
10.1 General requirements . 13
10.2 Stalled fan test . 14
11 Mechanical provisions . 14
11.1 Wire feeder . 14
11.2 Enclosure . 14
11.3 Handling means . 14
11.4 Drop withstand . 14

11.5 Tilting stability . 15
11.6 Filler wire supply . 15
11.6.1 Filler wire supply mounting . 15
11.6.2 Wire spool retaining device . 15
11.6.3 Filler wire overrun . 15
11.7 Feeding . 15
11.8 Protection against mechanical hazards . 16
12 Rating plate . 16
12.1 General . 16
12.2 Description . 16
12.3 Contents . 17
13 Indication of wire-feed speed . 18
14 Instructions and markings . 18
14.1 Instructions . 18
14.2 Markings . 19
Annex A (normative) Determination of the variation in wire-feed speed . 20
A.1 With respect to load change . 20
A.2 With respect to supply voltage change . 20
A.3 With respect to temperature rise . 21
Annex B (informative) Example of a rating plate of a stand-alone wire feeder . 22
Bibliography . 23

Figure 1 – Principle of the rating plate of stand-alone wire feeder . 17
Figure B.1 – Stand-alone wire feeder . 22

Table 1 – Minimum degree of protection . 9

– 4 – IEC 60974-5:2019 © IEC 2019
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
ARC WELDING EQUIPMENT –
Part 5: Wire feeders
FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National
...