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SLOVENSKI STANDARD
01-december-2018
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SIST EN 60974-1:2012
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Arc welding equipment - Part 1: Welding power sources (IEC 60974-1:2017)
Lichtbogenschweißeinrichtungen - Teil 1: Schweißstromquellen (IEC 60974-1:2017)
Matériel de soudage à l'arc - Partie 1: Sources de courant de soudage (IEC 60974-
1:2017)
Ta slovenski standard je istoveten z: EN IEC 60974-1:2018
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 IEC 60974-1
NORME EUROPÉENNE
EUROPÄISCHE NORM
September 2018
ICS 25.160 Supersedes EN 60974-1:2012
English Version
Arc welding equipment - Part 1: Welding power sources
(IEC 60974-1:2017)
Matériel de soudage à l'arc - Partie 1: Sources de courant Lichtbogenschweißeinrichtungen - Teil 1:
de soudage Schweißstromquellen
(IEC 60974-1:2017) (IEC 60974-1:2017)
This European Standard was approved by CENELEC on 2018-07-15. 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 CEN-CENELEC
Management Centre 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 CEN-CENELEC Management Centre 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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden,
Switzerland, Turkey and the United Kingdom.
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2018 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN IEC 60974-1:2018 E
European foreword
The text of document 26/610/FDIS, future edition 5 of IEC 60974-1, prepared by IEC/TC 26 "Electric
welding" was submitted to the IEC-CENELEC parallel vote and approved by CENELEC as
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2019-03-28
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2021-09-28
document have to be withdrawn
This document supersedes EN 60974-1:2012.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights.
Endorsement notice
The text of the International Standard IEC 60974-1:2017 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 60038:2009 NOTE Harmonized as EN 60038:2011 (modified)
IEC 60085 NOTE Harmonized as EN 60085
IEC 60204-1 NOTE Harmonized as EN 60204-1
IEC 60309-1 NOTE Harmonized as EN 60309-1
IEC 60335-2-29 NOTE Harmonized as EN 60335-2-29
IEC 60384-14 NOTE Harmonized as EN 60384-14
IEC 60950-1 NOTE Harmonized as EN 60950-1
IEC 60974-3 NOTE Harmonized as EN 60974-3
IEC 60974-4 NOTE Harmonized as EN 60974-4
IEC 60974-6 NOTE Harmonized as EN 60974-6
IEC 60974-9 NOTE Harmonized as EN IEC 60974-9
IEC 60974-10 NOTE Harmonized as EN 60974-10
IEC 60974-12 NOTE Harmonized as EN 60974-12
IEC 61032:1997 NOTE Harmonized as EN 61032:1998 (not modified)
IEC 61558-1 NOTE Harmonized as EN 61558-1
IEC 62281 NOTE Harmonized as EN 62281
ISO 13732-1 NOTE Harmonized as EN ISO 13732-1
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements 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 1 Where an International Publication has been modified by common modifications, indicated by (mod), the relevant
EN/HD applies.
NOTE 2 Up-to-date information on the latest versions of the European Standards listed in this annex is available here:
www.cenelec.eu.
Publication Year Title EN/HD Year
IEC 60050-151 - International Electrotechnical Vocabulary - - -
Part 151: Electrical and magnetic devices
IEC 60050-851 - International Electrotechnical Vocabulary - - -
Part 851: Electric welding
IEC 60245-6 - Rubber insulated cables - Rated voltages - -
up to and including 450/750 V -- Part 6: Arc
welding electrode cables
IEC 60417 - Graphical symbols for use on equipment. HD 243 S12 -
Index, survey and compilation of the single
sheets.
Basic and safety principles for man-
IEC 60445 - - -
machine interface, marking and
identification – Identification of equipment
terminals, conductor terminations and
conductors
IEC 60529 - Degrees of protection provided by - -
enclosures (IP Code)
IEC 60664-1 2007 Insulation coordination for equipment EN 60664-1 2007
within low-voltage systems - Part 1:
Principles, requirements and tests
IEC 60664-3 - Insulation coordination for equipment EN 60664-3 -
within low-voltage systems - Part 3: Use of
coating, potting or moulding for protection
against pollution
IEC 60695-11-10 - Fire hazard testing -- Part 11-10: Test EN 60695-11-10 -
flames - 50 W horizontal and vertical flame
test methods
IEC 60974-7 - Arc welding equipment -- Part 7:Torches EN 60974-7 -
IEC 61140 - Protection against electric shock - EN 61140 -
Common aspects for installation and
equipment
IEC 61558-2-4 - Safety of transformers, reactors, power EN 61558-2-4 -
supply units and similar products for supply
voltages up to 1 100 V - Part 2-4: Particular
requirements and tests for isolating
transformers and power supply units
incorporating isolating transformers
IEC 61558-2-6 - Safety of transformers, reactors, power EN 61558-2-6 -
supply units and similar products for supply
voltages up to 1 100 V -- Part 2-6:
Particular requirements and tests for safety
isolating transformers and power supply
units incorporating safety isolating
transformers
IEC 62133-1 - Secondary cells and batteries containing EN 62133-1 -
alkaline or other non-acid electrolytes -
Safety requirements for portable sealed
secondary cells, and for batteries made
from them, for use in portable applications
- Part 1: Nickel systems
IEC 62133-2 - Secondary cells and batteries containing EN 62133-2 -
alkaline or other non-acid electrolytes -
Safety requirements for portable sealed
secondary lithium cells, and for batteries
made from them, for use in portable
applications - Part 2: Lithium systems
ISO 7010 2011 Graphical symbols - Safety colours and EN ISO 7010 2012
safety signs - Registered safety signs
IEC 60974-1
Edition 5.0 2017-02
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Arc welding equipment –
Part 1: Welding power sources
Matériel de soudage à l’arc –
Partie 1: Sources de courant de soudage
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 25.160.30 ISBN 978-2-8322-3854-7
– 2 – IEC 60974-1:2017 © IEC 2017
CONTENTS
FOREWORD . 9
1 Scope . 11
2 Normative references . 11
3 Terms and definitions . 12
3.1 General terms . 12
3.2 Terms related to battery systems . 21
4 Environmental conditions . 24
5 Tests . 25
5.1 Test conditions . 25
5.2 Measuring instruments . 25
5.3 Conformity of components . 25
5.4 Type tests . 26
5.5 Routine tests. 26
6 Protection against electric shock . 27
6.1 Insulation . 27
6.1.1 General . 27
6.1.2 Clearances . 28
6.1.3 Creepage distances . 30
6.1.4 Insulation resistance . 32
6.1.5 Dielectric strength . 32
6.2 Protection against electric shock in normal service (direct contact) . 34
6.2.1 Protection provided by the enclosure . 34
6.2.2 Capacitors . 34
6.2.3 Automatic discharge of supply circuit capacitors . 35
6.2.4 Isolation of the welding circuit . 35
6.2.5 Welding circuit touch current . 35
6.2.6 Touch current in normal condition . 36
6.3 Protection against electric shock in case of a fault condition (indirect contact)
............................................................................................................................. 37
6.3.1 Protective provisions . 37
6.3.2 Isolation between windings of the supply circuit and the welding circuit . 37
6.3.3 Internal conductors and connections . 37
6.3.4 Additional requirements for plasma cutting systems . 38
6.3.5 Movable coils and cores . 38
6.3.6 Touch current in fault condition . 38
7 Thermal requirements . 39
7.1 Heating test . 39
7.1.1 Test conditions . 39
7.1.2 Tolerances of the test parameters . 39
7.1.3 Duration of test . 40
7.2 Temperature measurement . 40
7.2.1 Measurement conditions . 40
7.2.2 Surface temperature sensor . 40
7.2.3 Resistance . 40
7.2.4 Embedded temperature sensor . 41
7.2.5 Determination of the ambient air temperature . 41
IEC 60974-1:2017 © IEC 2017 – 3 –
7.2.6 Recording of temperatures .
...