IEC 60974-2:2007

Arc welding equipment - Part 2: Liquid cooling systems

Specifies safety and construction requirements for industrial and professional liquid cooling systems used in arc welding and allied processes to cool torches. Is applicable to stand-alone liquid cooling systems that are either connected to a separate welding power source or built into the welding power source enclosure. This new edition takes into account changes induced by the publication of the third edition of IEC 60974-1 as well as technical changes in the set-up.

Matériel de soudage à l'arc - Partie 2: Systèmes de refroidissement par liquide

Spécifie les prescriptions de sécurité et de construction des systèmes de refroidissement par liquide industriels et professionnels utilisés en soudage à l'arc et techniques connexes pour refroidir des torches. S'applique aux systèmes de refroidissement par liquide indépendants qui sont soit raccordés à une source de courant de soudage séparée soit incorporés dans l'enveloppe de la source de courant de soudage. Cette nouvelle édition tient compte des modifications induites par la publication de la troisième édition de la CEI 60974-1, ainsi que de modifications techniques du montage de simulation.

General Information

• Status: Published
• Publication Date: 13-Nov-2007
• 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
• Completion Date: 24-Jan-2013

Relations

• Revises: IEC 60974-2:2002 - Arc welding equipment - Part 2: Liquid cooling systems
• Effective Date: 05-Sep-2023
• Revised: IEC 60974-2:2013 - Arc welding equipment - Part 2: Liquid cooling systems
• Effective Date: 05-Sep-2023

Standards Content (Sample)

IEC 60974-2
Edition 2.0 2007-11
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Arc welding equipment –
Part 2: Liquid cooling systems

Matériel de soudage à l'arc –
Partie 2: Systèmes de refroidissement par liquide

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IEC 60974-2
Edition 2.0 2007-11
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Arc welding equipment –
Part 2: Liquid cooling systems

Matériel de soudage à l'arc –
Partie 2: Systèmes de refroidissement par liquide

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
Q
CODE PRIX
ICS 25.160 ISBN 2-8318-9388-7
– 2 – 60974-2 © IEC:2007
CONTENTS
FOREWORD.4

1 Scope.6
2 Normative references .6
3 Terms and definitions .6
4 Environmental conditions.6
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
6 Protection against electric shock .8
6.1 Insulation .8
6.2 Protection against electric shock in normal service (direct contact) .8
6.3 Protection against electric shock in case of a fault condition (indirect contact) .8
6.4 Connection to the input supply network .8
6.5 Leakage current between welding circuit and protective earth .9
7 Mechanical provisions .9
7.1 General .9
7.2 Cooling liquid overflow .9
7.3 Hose coupling devices and hose connections.10
8 Cooling system.10
8.1 Rated maximum pressure.10
8.2 Thermal requirements .10
8.3 Pressure and temperature .10
9 Abnormal operation .10
9.1 General requirements.10
9.2 Stalled test .11
10 Cooling power .11
10.1 Test procedure .11
11 Rating plate.13
11.1 General .13
11.2 Description.13
11.3 Contents .13
11.4 Tolerances .14
12 Instructions.14
12.1 Supplied documents and information .14
13 Marking .15
13.1 General markings .15
13.2 Inlet and outlet .15
13.3 Pressure warning .15

Annex A (informative) Example diagram of built-in and stand-alone liquid cooling
systems .16

60974-2 © IEC:2007 – 3 –
Annex B (informative) Example for a rating plate of stand-alone cooling system .17

Figure 1 – Leakage current measurement configuration .9
Figure 2 – Measuring circuit for determination of the cooling power .12
Figure 3 – Principle of the rating plate of stand-alone cooling systems.13
Figure A.1 – Example diagram of built-in liquid cooling systems .16
Figure A.2 – Example diagram of stand-alone liquid cooling systems.16

Table 1 – Example of cooling liquid data at 60 °C .12

– 4 – 60974-2 © IEC:2007
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
ARC WELDING EQUIPMENT –
Part 2: Liquid cooling systems

FOREWORD
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International Standard IEC 60974-2 has been prepared by IEC technical committee 26:
Electric welding.
This second edition cancels and replaces the first edition published in 2002 and constitutes a
technical revision.
This ed
...