SIST EN 60974-4:2011

Arc welding equipment - Part 4: Periodic inspection and testing (IEC 60974-4:2010)

This part of IEC 60974 specifies test procedures for periodic inspection and, after repair, to ensure electrical safety. These test procedures are also applicable for maintenance. This standard is applicable to power sources for arc welding and allied processes designed in accordance with IEC 60974-1 or IEC 60974-6. Stand-alone ancillary equipment designed in accordance with other part of IEC 60974 may be tested in accordance with relevant requirement of this part of IEC 60974.
NOTE 1 The welding power source may be tested with any ancillary equipment fitted that could affect the test results.
This standard is not applicable to testing of new power sources or engine-driven power sources.
NOTE 2 For a power source not built in accordance with IEC 60974-1, see Annex C.

Lichtbogenschweißeinrichtungen - Teil 4: Wiederkehrende Inspektion und Prüfung (IEC 60974-4:2010)

Matériel de soudage à l'arc - Partie 4: Inspection et essais périodiques (CEI 60974-4:2010)

La CEI 60974-4:2010 spécifie les procédures d'essai pour l'inspection périodique, afin de garantir la sécurité électrique après réparation. Ces procédures d'essai s'appliquent également à la maintenance. La présente norme s'applique aux sources de courant pour le soudage à l'arc et les techniques connexes conçues conformément à la CEI 60974-1 ou la CEI 60974-6. Les équipements auxiliaires indépendants conçus conformément à une autre partie de la CEI 60974 peuvent être soumis aux essais conformément aux exigences correspondantes de la présente partie de la CEI 60974. Cette seconde édition annule et remplace la première édition parue en 2006. Elle constitue une révision technique. Les modifications majeures par rapport à l'édition précédente sont les suivantes:   - changement du titre;  - le domaine d'application est élargi au matériel conçu conformément à la CEI 60974-6;  - les instructions complémentaires du fabricant doivent être respectées;  - la qualification du personnel effectuant les essais est clarifiée (voir 4.1);  - les sources de courant pour coupage plasma sont exclues de l'essai de la tension à vide (voir 5.6);  - l'essai fonctionnel du dispositif réducteur de tension est simplifié (voir 6.3);  - la tension d'alimentation est enregistrée dans le rapport d'essai (voir 7.1).

Oprema za obločno varjenje - 4. del: Perodični pregledi in preskusi (IEC 60974-4:2010)

Ta del IEC 60974 določa preskusne postopke za periodične preglede in, po popravilu, za zagotavljanje električne varnosti. Ti preskusni postopki veljajo tudi za vzdrževanje. Ta standard velja za vire napajanja za obločno varjenje in povezane procese, zasnovane v skladu z IEC 60974-1 ali IEC 60974-6. Samostojna pomožna oprema, projektirana v skladu z drugimi deli IEC 60974, se lahko preskuša v skladu z ustreznimi zahtevami tega dela IEC 60974.
OPOMBA 1: Vir napajanja za varjenje se lahko preskuša s katero koli nameščeno pomožno opremo, ki lahko vpliva na rezultate preskusa.
Ta standard ne velja za preskušanje novih virov napajanja ali virov napajanja, ki jih poganja motor.
OPOMBA 2: Za vir napajanja, ki ni vgrajen v skladu z IEC 60974-1, glej dodatek C.

General Information

• Status: Withdrawn
• Publication Date: 10-Apr-2011
• Withdrawal Date: 10-Oct-2019
• ICS: 25.160.30 - Welding equipment
• Technical Committee: I09 - Imaginarni 09
• Current Stage: 9900 - Withdrawal (Adopted Project)
• Start Date: 11-Oct-2019
• Due Date: 03-Nov-2019
• Completion Date: 11-Oct-2019
• Ref Project: EN 60974-4:2011 - Arc welding equipment - Part 4: Periodic inspection and testing

Relations

• Replaces: SIST EN 60974-4:2007 - Arc welding equipment -- Part 4: In-service inspection and testing
• Effective Date: 02-Jan-2014
• Replaced By: SIST EN 60974-4:2017 - Arc welding equipment - Part 4: Periodic inspection and testing (IEC 60974-4:2016)
• Effective Date: 15-Nov-2016
• Revised: SIST EN 60974-4:2007 - Arc welding equipment -- Part 4: In-service inspection and testing
• Effective Date: 07-Jan-2014
• Revised: SIST EN 60974-4:2017 - Arc welding equipment - Part 4: Periodic inspection and testing (IEC 60974-4:2016)
• Effective Date: 07-Apr-2015
• Replaces: SIST EN 60974-4:2007 - Arc welding equipment -- Part 4: In-service inspection and testing
• Effective Date: 28-Jan-2023

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN 60974-4:2011
01-maj-2011
1DGRPHãþD
SIST EN 60974-4:2007
2SUHPD]DREORþQRYDUMHQMHGHO3HURGLþQLSUHJOHGLLQSUHVNXVL,(&

Arc welding equipment - Part 4: Periodic inspection and testing (IEC 60974-4:2010)
Lichtbogenschweißeinrichtungen - Teil 4: Wiederkehrende Inspektion und Prüfung (IEC
60974-4:2010)
Matériel de soudage à l'arc - Partie 4: Inspection et essais périodiques (CEI 60974-
4:2010)
Ta slovenski standard je istoveten z: EN 60974-4:2011
ICS:
25.160.30 Varilna oprema Welding equipment
SIST EN 60974-4:2011 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 60974-4:2011

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SIST EN 60974-4:2011

EUROPEAN STANDARD
EN 60974-4

NORME EUROPÉENNE
March 2011
EUROPÄISCHE NORM

ICS 25.160 Supersedes EN 60974-4:2007


English version


Arc welding equipment -
Part 4: Periodic inspection and testing
(IEC 60974-4:2010)


Matériel de soudage à l'arc -  Lichtbogenschweißeinrichtungen -
Partie 4: Inspection et essais périodiques Teil 4: Wiederkehrende Inspektion und
(CEI 60974-4:2010) Prüfung
(IEC 60974-4:2010)




This European Standard was approved by CENELEC on 2011-01-02. 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, Bulgaria, Croatia, Cyprus,
the Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy,
Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia,
Spain, Sweden, Switzerland and the United Kingdom.

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

Management Centre: Avenue Marnix 17, B - 1000 Brussels


© 2011 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 60974-4:2011 E

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SIST EN 60974-4:2011
EN 60974-4:2011 - 2 -
Foreword
The text of document 26/422/FDIS, future edition 2 of IEC 60974-4, prepared by IEC TC 26, Electric
welding, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as
EN 60974-4 on 2011-01-02.
This European Standard supersedes EN 60974-4:2007.
The main significant technical changes with respect to EN 60974-4:2007 are the following:
– title is amended;
– scope is extended to equipment designed in accordance with EN 60974-6;
– complementary instructions from the manufacturer shall be followed;
– qualification of test personnel is clarified (see 4.1);
– plasma cutting power sources are excluded from no-load voltage test (see 5.6);
– voltage reducing device functional test is simplified (see 6.3);
– supply voltage is recorded in test report (see 7.1).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN and CENELEC shall not be held responsible for identifying any or all such patent
rights.
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) 2011-10-02
– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2014-01-02
Annex ZA has been added by CENELEC.
__________
Endorsement notice
The text of the International Standard IEC 60974-4:2010 was approved by CENELEC as a European
Standard without any modification.
__________

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SIST EN 60974-4:2011
- 3 - EN 60974-4:2011
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  When an international publication has been modified by common modifications, indicated by (mod), the relevant EN/HD
applies.

Publication Year Title EN/HD Year

IEC 60050-151 - International Electrotechnical Vocabulary - -
(IEV) -
Part 151: Electrical and magnetic devices


IEC 60050-195 - International Electrotechnical Vocabulary - -
(IEV) -
Chapter 195: Earthing and protection against
electric shock


IEC 60050-851 - International Electrotechnical Vocabulary - - -
Part 851: Electric welding


IEC 60974-1 2005 Arc welding equipment - EN 60974-1 2005
Part 1: Welding power sources


IEC 60974-6 - Arc welding equipment - EN 60974-6 -
Part 6: Limited duty equipment


IEC 61557-4 - Electrical safety in low voltage distribution EN 61557-4 -
systems up to 1 000 V a.c. and 1 500 V d.c. -
Equipment for testing, measuring or
monitoring of protective measures -
Part 4: Resistance of earth connection and
equipotential bonding

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SIST EN 60974-4:2011

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SIST EN 60974-4:2011
IEC 60974-4
®
Edition 2.0 2010-08
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE


Arc welding equipment –
Part 4: Periodic inspection and testing

Matériel de soudage à l’arc –
Partie 4: Inspection et essais périodiques

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
P
CODE PRIX
ICS 25.160 ISBN 978-2-88912-158-8
® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale

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SIST EN 60974-4:2011
– 2 – 60974-4 © IEC:2010
CONTENTS
FOREWORD.3
1 Scope.5
2 Normative references .5
3 Terms and definitions .5
4 General requirements .6
4.1 Qualification of test personnel .6
4.2 Test conditions.6
4.3 Measuring instruments .6
4.4 Periodic inspection and test.7
4.5 Maintenance.7
4.6 Repair .7
4.7 Test sequence.7
5 Protection against electrical shock.8
5.1 Visual inspection .8
5.2 Continuity of the protective circuit.8
5.3 Insulation resistance .8
5.4 Welding circuit leakage current.8
5.5 Primary leakage current .9
5.6 No-load voltage (U ) .11
0
6 Functional test.11
6.1 Function .11
6.2 Supply-circuit on/off switching device .12
6.3 Voltage-reducing device .12
6.4 Magnetic gas valve.12
6.5 Signal and control lamps .12
7 Documentation .12
7.1 Test report .12
7.2 Labelling .13
Annex A (informative) Check-list for the visual inspection .14
Annex B (informative) Example of a test report after repair .15
Annex C (informative) Equipment not built in accordance with IEC 60974-1.16

Figure 1 – Measurement of leakage current of welding circuit .9
Figure 2 – Measuring network for primary leakage current .10
Figure 3 – Principles of primary leakage current measurement for single phase
equipment.10
Figure 4 – Measurement of peak values.11

Table 1 – Test sequence on used arc welding equipment .7
Table 2 – Insulation resistance .8

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SIST EN 60974-4:2011
60974-4 © IEC:2010 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________

ARC WELDING EQUIPMENT –

Part 4: Periodic inspection and testing


FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote
international co-operation on all questions concerning standardization in the electrical and electronic fields. To
this end and in addition to other activities, IEC publishes International Standards, Technical Specifications,
Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC
Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested
in the subject dealt with may participate in this preparatory work. International, governmental and non-
governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely
with the International Organization for Standardization (ISO) in accordance with conditions determined by
agreement between the two organizations.
2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee has representation from all
interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
misinterpretation by any end user.
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maximum extent possible in their national and regional publications. Any divergence
between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in
the latter.
5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity
assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
services carried out by independent certification bodies.
6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
members of its technical committees and IEC National Committees for any personal injury, property damage or
other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
Publications.
8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of
patent rights. IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 60974-4 has been prepared by IEC technical committee 26:
Electric welding.
This second edition cancels and replaces the first edition published in 2006. It constitutes a
technical revision.
The main significant technical changes with respect to the previous edition are the following:
– title is amended;
– scope is extended to equipment designed in accordance with IEC 60974-6;
– complementary instructions from the manufacturer shall be followed;
– qualification of test personnel is clarified (see 4.1);
– plasma cutting power sources are excluded from no-load voltage test (see 5.6);
– voltage reducing device functional test is simplified (see 6.3);
– supply voltage is recorded in test report (see 7.1).

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SIST EN 60974-4:2011
– 4 – 60974-4 © IEC:2010
The text of this standard is based on the following documents:
FDIS Report on voting
26/422/FDIS 26/428/RVD

Full information on the voting for the approval of this standard can be found in the report on
voting indicated in the above table.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
The list of all the parts of the IEC 60974 series, under the general title Arc welding equipment,
can be found on the IEC website.
The committee has decided that the contents of this publication will remain unchanged until
the stability date indicated on the IEC web site under "http://webstore.iec.ch" in the data
related to the specific publication. At this date, the publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.

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SIST EN 60974-4:2011
60974-4 © IEC:2010 – 5 –
ARC WELDING EQUIPMENT –

Part 4: Periodic inspection and testing



1 Scope
This part of IEC 60974 specifies test procedures for periodic inspection and, after repair, to
ensure electrical safety. These test procedures are also applicable for maintenance.
This standard is applicable to power sources for arc welding and allied processes designed in
accordance with IEC 60974-1 or IEC 60974-6. Stand-alone ancillary equipment designed in
accordance with other part of IEC 60974 may be tested in accordance with relevant
requirement of this part of IEC 60974.
NOTE 1 The welding power source may be tested with any ancillary equipment fitted that could affect the test
results.
This standard is not applicable to testing of new power sources or engine-driven power
sources.
NOTE 2 For a power source not built in accordance with IEC 60974-1, see Annex C.
2 Normative references
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.
IEC 60050-151, International Electrotechnical Vocabulary (IEV) – Part 151: Electrical and
magnetic devices
IEC 60050-195, International Electrotechnical Vocabulary (IEV) – Part 195: Earthing and
protection against electric shock
IEC 60050-851, International Electrotechnical Vocabulary (IEV) – Part 851: Electric welding
IEC 60974-1:2005, Arc welding equipment – Part 1: Welding power sources
IEC 60974-6, Arc welding equipment – Part 6: Limited duty manual metal arc welding power
sources
IEC 61557-4, Electrical safety in low voltage distribution systems up to 1 000 V a.c. and
1 500 V d.c. – Equipment for testing, measuring or monitoring of protective measures –
Part 4: Resistance of earth connection and equipotential bonding
3 Terms and definitions
For the purposes of this document, the terms and definitions given in the IEC 60050-151, the
IEC 60050-195, the IEC 60050-851, the IEC 60974-1, as well as the following, apply.

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SIST EN 60974-4:2011
– 6 – 60974-4 © IEC:2010
3.1
expert
competent person
skilled person
a person who can jud
...