IEC 60974-3:2013

Arc welding equipment - Part 3: Arc striking and stabilizing devices

IEC 60974-3:2013 specifies safety requirements for industrial and professional arc striking and arc stabilizing devices used in arc welding and allied processes. This part of IEC 60974 is applicable to stand-alone units which may be connected to a separate welding power source or one where the welding power source and the arc striking and arc stabilizing device are housed in a single enclosure. This third edition cancels and replaces the second edition published in 2007 and constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
- changes induced by the publication of IEC 60974-1:2012.
This publication is to be read in conjunction with IEC 60974-1:2012.

Matériel de soudage à l'arc - Partie 3: Dispositifs d'amorçage et de stabilisation de l'arc

L'IEC 60974-3:2013 spécifie les exigences de sécurité pour les dispositifs d'amorçage et de stabilisation industriels et professionnels utilisés en soudage à l'arc et techniques connexes. La présente partie de la CEI 60974 s'applique aux unités indépendantes qui peuvent être soit raccordées à la source de courant de soudage, soit dotées d'une source de courant de soudage et de dispositifs d'amorçage et de stabilisation de l'arc intégrés dans la même enveloppe. Cette troisième édition annule et remplace la deuxième édition parue en 2007 et constitue une révision technique. Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente:
- modifications induites par la publication de la CEI 60974-1:2012.
Cette publication doit être lue conjointement avec la CEI 60974-1:2012.

General Information

• Status: Published
• Publication Date: 25-Nov-2013
• ICS: 25.160.30 - Welding equipment
• Technical Committee: TC 26 - Electric welding
• Drafting Committee: WG 1 - TC 26/WG 1
• Current Stage: DELPUB - Deleted Publication
• Start Date: 28-Apr-2017
• Completion Date: 30-Jan-2019

Relations

• Revises: IEC 60974-3:2007 - Arc welding equipment - Part 3: Arc striking and stabilizing devices
• Effective Date: 05-Sep-2023
• Revised: IEC 60974-3:2019 - Arc welding equipment - Part 3: Arc striking and stabilizing devices
• Effective Date: 05-Sep-2023

Standards Content (Sample)

IEC 60974-3 ®
Edition 3.0 2013-11
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Arc welding equipment –
Part 3: Arc striking and stabilizing devices

Matériel de soudage à l’arc –
Partie 3: Dispositifs d’amorçage et de stabilisation de l’arc

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IEC 60974-3 ®
Edition 3.0 2013-11
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Arc welding equipment –
Part 3: Arc striking and stabilizing devices

Matériel de soudage à l’arc –
Partie 3: Dispositifs d’amorçage et de stabilisation de l’arc

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX R
ICS 25.160 ISBN 978-2-8322-1199-1

– 2 – 60974-3  IEC:2013
CONTENTS
FOREWORD . 4

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 . 7
5.4 Type tests . 7
5.5 Routine tests. 7
5.5.1 Stand-alone unit . 7
5.5.2 Built-in unit . 8
6 Protection against electric shock . 8
6.1 Insulation . 8
6.1.1 General . 8
6.1.2 Clearances . 8
6.1.3 Creepage distances . 8
6.1.4 Insulation resistance . 9
6.1.5 Dielectric strength . 9
6.2 Protection against electric shock in normal service (direct contact) . 10
6.3 Protection against electric shock in case of a fault condition (indirect
contact) . 10
6.4 Protective provision . 10
7 Thermal requirements . 10
8 Thermal protection . 10
9 Abnormal operation . 10
10 Connection to the supply network . 11
11 Output . 11
11.1 Rated peak voltage . 11
11.2 Impulse current . 12
11.2.1 Risk of electric shock . 12

11.2.2 Electric charge. 12
11.2.3 Direct contact . 12
11.2.4 Series contact. 13
11.3 Mean energy . 14
11.4 Output circuit capacitance discharging . 15
12 Control circuits . 15
13 Hazard reducing device . 15
14 Mechanical provisions . 15
15 Rating plate . 15
16 Adjustment of the output . 16
17 Instructions and markings . 16
17.1 Instructions . 16
17.2 Markings . 17

60974-3  IEC:2013 – 3 –
Annex A (informative) Examples of coupling systems for arc striking and stabilizing

devices . 18

Annex B (informative) Example of a rating plate . 19

Bibliography . 20

Figure 1 – Rated peak voltage . 11

Figure 2 – Measurement of electric charge of impulse current . 12

Figure 3 – Measuring circuit for direct contact . 13

Figure 4 – Measuring circuit for serial contact . 14

Figure 5 – Measurement of mean energy . 14
Figure 6 – Measuring circuit for capacitance discharging . 15
Figure A.1 – Examples of coupling systems for arc striking and stabilizing devices . 18
Figure B.1 – Stand-alone unit . 19

Table 1 – Minimum clearances and creepage distances for arc striking and stabilizing
circuits . 9
Table 2 – Maximum peak voltages . 11

– 4 – 60974-3  IEC:2013
INTERNATIONAL ELECTROTECHNICAL COMMISSION

____________
ARC WELDING EQUIPMENT –
Part 3: Arc striking and stabilizing devices

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