EN 60974-1:2005

Arc welding equipment - Part 1: Welding power sources

Is applicable to power sources for arc welding and allied processes designed for industrial and professional use. Specifies safety and performance requirements of welding power sources and plasma cutting systems.

Lichtbogenschweißeinrichtungen - Teil 1: Schweißstromquellen

Matériel de soudage à l'arc - Partie 1: Sources de courant de soudage

S'applique aux sources de courant de soudage à l'arc et techniques connexes conçues pour un usage industriel et professionnel. Spécifie les exigences de sécurité et de fonctionnement des sources de courant de soudage et des systèmes de coupage plasma.

Naprave za obločno varjenje - 1. del: Viri varilnega toka (IEC 60974-1:2005)

General Information

• Status: Withdrawn
• Publication Date: 18-Oct-2005
• Withdrawal Date: 30-Sep-2008
• ICS: 25.160 - Welding, brazing and soldering
• Technical Committee: CLC/TC 26 - Electric welding
• Drafting Committee: IEC/TC 26 - IEC_TC_26
• Parallel Committee: IEC/TC 26 - IEC_TC_26
• Current Stage: 9960 - Withdrawal effective - Withdrawal
• Start Date: 17-Jul-2015
• Completion Date: 17-Jul-2015
• Directive: 2006/95/EC - Directive 2006/95/EC of the European Parliament and of the Council of 12 December 2006 on the harmonisation of the laws of Member States relating to electrical equipment designed for use within certain voltage limits (codified version)
• Directive: 73/23/EEC - Electrical equipment designed for use within certain voltage limits
• Ref Project: SIST EN 60974-1:2005 - Arc welding equipment -- Part 1: Welding power sources

Relations

• Replaces: EN 60974-1:1998 - Arc welding equipment - Part 1: Welding power sources
• Effective Date: 29-Jan-2023
• Replaces: EN 60974-1:1998/A1:2000 - Arc welding equipment - Part 1: Welding power sources
• Effective Date: 29-Jan-2023
• Replaces: EN 60974-1:1998/A2:2003 - Arc welding equipment - Part 1: Welding power sources
• Effective Date: 29-Jan-2023
• Replaced By: EN 60974-1:2012 - Arc welding equipment - Part 1: Welding power sources
• Effective Date: 28-Jan-2023

Standards Content (Sample)

SLOVENSKI STANDARD
01-december-2005
1DGRPHãþD
SIST EN 60974-1:2000
1DSUDYH]DREORþQRYDUMHQMHGHO9LULYDULOQHJDWRND,(&
Arc welding equipment -- Part 1: Welding power sources
Lichtbogenschweißeinrichtungen -- Teil 1: Schweißstromquellen
Matériel de soudage à l'arc -- Partie 1: Sources de courant de soudage
Ta slovenski standard je istoveten z: EN 60974-1:2005
ICS:
25.160.30 Varilna oprema Welding equipment
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN 60974-1
NORME EUROPÉENNE
EUROPÄISCHE NORM October 2005

ICS 25.160 Supersedes EN 60974-1:1998 + A1:2000 + A2:2003

English version
Arc welding equipment
Part 1: Welding power sources
(IEC 60974-1:2005)
Matériel de soudage à l'arc Lichtbogenschweißeinrichtungen
Partie 1: Sources de courant de soudage Teil 1: Schweißstromquellen
(CEI 60974-1:2005) (IEC 60974-1:2005)

This European Standard was approved by CENELEC on 2005-10-01. CENELEC members are bound to
comply 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 Central Secretariat 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 Central Secretariat has the same status as the official versions.

CENELEC members are the national electrotechnical committees of Austria, Belgium, Cyprus, Czech
Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden,
Switzerland and United Kingdom.

CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung

Central Secretariat: rue de Stassart 35, B - 1050 Brussels

© 2005 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.

Ref. No. EN 60974-1:2005 E
Foreword
The text of document 26/307/FDIS, future edition 3 of IEC 60974-1, prepared by IEC TC 26, Electric
welding, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as
EN 60974-1 on 2005-10-01.
This European Standard supersedes EN 60974-1:1998 + A1:2000 + A2:2003.
The significant changes with respect to EN 60974-1:1998 are the following:
– the scope includes relationship to other parts of EN 60974;
– environmental conditions were changed (see 4.a and 4.e);
– conformity of components is given (see 5.3);
– the sequence of type test was changed (see 5.4);
– more precise requirements for measuring the no-load voltage during routine test are given
(see 5.5d);
– creepage values for printed circuit boards are implemented (see Table 2);
– requirements for enclosures are changed (see 6.2.1);
– requirements for primary leakage current are included (see 6.3.7 and Annex N);
– requirements for engine driven power sources are changed (see 7.1.2 and 7.3.2);
– requirements for supply circuit terminals are changed (see 10.4.3 and 10.4.4);
– requirements for cable anchorage are changed (see 10.5);
– requirements for coupling devices are changed (see 10.9);
– standard characteristic for plasma welding is included (11.2.6);
– requirements for welding cables are added (see 11.7);
– requirements for plastic material used as enclosure materials are added (see 14.2.1);
– requirements for manual handling are added (see 14.3.2);
– existing ISO symbols and labels are taken into account (see 15.3 and 17.2).
The following dates were fixed:
– latest date by which the EN has to be implemented
at national level by publication of an identical
national standard or by endorsement (dop) 2006-07-01
– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2008-10-01
Annex ZA has been added by CENELEC.
__________
- 3 - EN 60974-1:2005
Endorsement notice
The text of the International Standard IEC 60974-1:2005 was approved by CENELEC as a European
Standard without any modification.
In the official version, for Bibliography, the following notes have to be added for the standards indicated:
IEC 60085 NOTE Harmonized as EN 60085:2004 (not modified).
IEC 60204-1 NOTE Harmonized as EN 60204-1:1997 (not modified).
IEC 62079 NOTE Harmonized as EN 62079:2001 (not modified).
IEC 62081 NOTE Harmonized as CLC/TS 62081:2002 (not modified).
__________
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
The following referenced documents are indispensable for the application of this document. For dated
references, only the edition cited applies. For undated references, the latest edition of the referenced
document (including any amendments) applies.
NOTE Where an international publication has been modified by common modifications, indicated by (mod), the relevant
EN/HD applies.
Publication Year Title EN/HD Year
1) 2)
IEC 60038 (mod) - Nominal voltages for low-voltage public HD 472 S1 1989
electricity supply systems + corr. February 2002

1)
IEC 60050-151 - International Electrotechnical - -
Vocabulary (IEV)
Part 151: Electrical and magnetic
devices
1)
IEC 60050-851 - Chapter 851: Electric welding - -

1) 2)
IEC 60112 - Method for the determination of the EN 60112 2003
proof and the comparative tracking
indices of solid insulating materials

1)
IEC 60245-6 - Rubber insulated cables - Rated - -
voltages up to and including 450/750 V
Part 6: Arc welding electrode cables

1) 2)
IEC 60309-1 - Plugs, socket-outlets and couplers for EN 60309-1 1999
industrial purposes + A11 2004
Part 1: General requirements
database
IEC 60417 Graphical symbols for use on - -
equipment
1) 2)
IEC 60445 - Basic and safety principles for man- EN 60445 2000
machine interface, marking and
identification - Identification of
equipment terminals and of terminations
of certain designated conductors,
including general rules for an
alphanumeric system
1) 2)
IEC 60529 - Degrees of protection provided by EN 60529 1991
enclosures (IP Code) + corr. May 1993

1)
Undated reference.
2)
Valid edition at date of issue.

- 5 - EN 60974-1:2005
Publication Year Title EN/HD Year
IEC 60664-1 1992 Insulation coordination for equipment
within low-voltage systems
Part 1: Principles, requirements and
tests
+ A1 2000
+ A2 2002 EN 60664-1 2003
1) 2)
IEC 60664-3 - Part 3: Use of coating, potting or EN 60664-3 2003
moulding for protection against pollution

1) 2)
IEC 60695-11-10 - Fire hazard testing EN 60695-11-10 1999
Part 11-10: Test flames - 50 W
horizontal and vertical flame test
methods
1) 2)
IEC 60974-7 - Arc welding equipment EN 60974-7 2005
Part 7:Torches
1) 2)
IEC 60974-12 - Part 12: Coupling devices for welding EN 60974-12 2005
cables
1) 2)
IEC 61140 - Protection against electric shock - EN 61140 2002
Common aspects for installation and
equipment
1) 2)
IEC 61558-2-4 - Safety of power transformers, power EN 61558-2-4 1997
supply units and similar
Part 2-4: Particular requirements for
isolating transformers for general use

1) 2)
IEC 61558-2-6 - Part 2-6: Particular requirements for EN 61558-2-6 1997
safety isolating transformers for general
use
1) 2)
CISPR 11 (mod) - Industrial, scientific and medical (ISM) EN 55011 1998
radio-frequency equipment - Radio
disturbance characteristics - Limits and
methods of measurement
NORME CEI
INTERNATIONALE
IEC
60974-1
INTERNATIONAL
Troisième édition
STANDARD
Third edition
2005-07
Matériel de soudage à l'arc –
Partie 1:
Sources de courant de soudage
Arc welding equipment –
Part 1:
Welding power sources
 IEC 2005 Droits de reproduction réservés  Copyright - all rights reserved
Aucune partie de cette publication ne peut être reproduite ni No part of this publication may be reproduced or utilized in any
utilisée sous quelque forme que ce soit et par aucun procédé, form or by any means, electronic or mechanical, including
électronique ou mécanique, y compris la photocopie et les photocopying and microfilm, without permission in writing from
microfilms, sans l'accord écrit de l'éditeur. the publisher.
International Electrotechnical Commission, 3, rue de Varembé, PO Box 131, CH-1211 Geneva 20, Switzerland
Telephone: [phone] Telefax: [phone] E-mail: [e-mail] Web: www.iec.ch
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60974-1  IEC:2005 – 3 –
CONTENTS
FOREWORD.11

1 Scope.17
2 Normative references.17
3 Terms and definitions .19
4 Environmental conditions .33
5 Tests .35
5.1 Test conditions .35
5.2 Measuring instruments.35
5.3 Conformity of components .35
5.4 Type tests .37
5.5 Routine tests .37
6 Protection against electric shock.39
6.1 Insulation.39
6.2 Protection against electric shock in normal service (direct contact).47
6.3 Protection against electric shock in case of a fault condition (indirect contact) .51
7 Thermal requirements.59
7.1 Heating test .59
7.2 Temperature measurement.59
7.3 Limits of temperature rise .63
7.4 Loading test.67
7.5 Commutators and slip-rings .67
8 Abnormal operation.67
8.1 General requirements .67
8.2 Stalled fan test .69
8.3 Short circuit test .69
8.4 Overload test.71
9 Thermal protection.71
9.1 General requirements .71
9.2 Construction .71
9.3 Location .71
9.4 Operation .73
9.5 Resetting.73
9.6 Operating capacity.73
9.7 Indication.73
10 Connection to the input supply network .75
10.1 Supply voltage .75
10.2 Multi supply voltage .75
10.3 Means of connection to the supply circuit .75
10.4 Supply circuit terminals.77
10.5 Cable anchorage .
...