EN IEC 60974-7:2019
(Main)Arc welding equipment - Part 7: Torches
Arc welding equipment - Part 7: Torches
This part of IEC 60974 specifies safety and construction requirements for TORCHES used for arc welding and allied processes. This document is applicable to MANUAL, MECHANICALLY GUIDED, AIR-COOLED, LIQUID-COOLED, MOTORIZED, SPOOL-ON and FUME EXTRACTION TORCHES. In this document, a TORCH consists of the TORCH BODY, the CABLE-HOSE ASSEMBLY and other components. This document is also applicable to a CABLE-HOSE ASSEMBLY connected between a power source and ancillary equipment. This document is not applicable to electrode holders for manual metal arc welding or air-arc cutting/gouging. NOTE 1 Typical allied processes are electric arc cutting and arc spraying. NOTE 2 Other components are listed in Table A.1. NOTE 3 In this document, all procedures and requirements are the same for "TORCHES" and "GUNS". For convenience, the term "TORCH" is used in the following text.
Lichtbogenschweißeinrichtungen - Teil 7: Brenner
Matériel de soudage à l’arc - Partie 7: Torches
La présente partie de l’IEC 60974 spécifie les exigences de sécurité et de construction pour les TORCHES utilisées en soudage à l’arc et les procédés connexes. Le présent document s’applique aux TORCHES MANUELLES, GUIDÉES MÉCANIQUEMENT, REFROIDIES PAR AIR, REFROIDIES PAR LIQUIDE, MOTORISÉES, ENROULÉES et POUR EXTRACTION DE FUMEE. Dans le présent document, une TORCHE comprend le CORPS DE TORCHE, le FAISCEAU et d’autres composants. Le présent document s'applique aussi à un FAISCEAU qui est connecté entre une source de courant de soudage et l'équipement auxiliaire. Le présent document ne s’applique pas aux porte-électrodes pour le soudage à l’arc métallique manuel ni au coupage/gougeage air-arc. NOTE 1 Le coupage à l’arc électrique et la projection à l'arc électrique sont des exemples de procédés connexes typiques. NOTE 2 D’autres composants sont énumérés dans le Tableau A.1. NOTE 3 Dans le présent document, toutes les procédures et exigences sont identiques pour "TORCHES" et "PISTOLET". Par commodité, le terme "TORCHE" est utilisé dans le texte suivant
Oprema za obločno varjenje - 7. del: Gorilniki (IEC 60974-7:2019)
Ta dokument določa varnostne in konstrukcijske zahteve za GORILNIKE za obločno varjenje in povezane postopke. Ta dokument se uporablja za ROČNE, MEHANSKO VODENE, ZRAČNO HLAJENE, TEKOČINSKO HLAJENE, MOTORIZIRANE GORILNIKE in GORILNIKE Z NAVOJEM ALI Z EKSTRAKCIJO DIMA. V tem dokumentu je GORILNIK sestavljen iz TELESA GORILNIKA, SESTAVA KABELSKE CEVI in drugih sestavnih delov. Ta dokument se uporablja tudi za SESTAV KABELSKE CEVI, priključen na vir napajanja in pomožno opremo. Ta dokument se ne uporablja za držala elektrod za ročno obločno varjenje kovine ali rezanje/dolbenje zračnega obloka.
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-februar-2020
Nadomešča:
SIST EN 60974-7:2013
Oprema za obločno varjenje - 7. del: Gorilniki (IEC 60974-7:2019)
Arc welding equipment - Part 7:Torches (IEC 60974-7:2019)
Lichtbogenschweißeinrichtungen - Teil 7: Brenner (IEC 60974-7:2019)
Matériel de soudage à l'arc - Partie 7: Torches (IEC 60974-7:2019)
Ta slovenski standard je istoveten z: EN IEC 60974-7:2019
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 60974-7
NORME EUROPÉENNE
EUROPÄISCHE NORM
November 2019
ICS 25.160.30 Supersedes EN 60974-7:2013 and all of its amendments
and corrigenda (if any).
English Version
Arc welding equipment - Part 7: Torches
(IEC 60974-7:2019)
Matériel de soudage à l'arc - Partie 7: Torches Lichtbogenschweißeinrichtungen - Teil 7: Brenner
(IEC 60974-7:2019) (IEC 60974-7:2019)
This European Standard was approved by CENELEC on 2019-03-06. 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
© 2019 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN IEC 60974-7:2019 E
European foreword
The text of document 26/673/FDIS, future edition 4 of IEC 60974-7, 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) 2020-05-08
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2022-11-08
document have to be withdrawn
This document supersedes EN 60974-7:2013 and all of its amendments and corrigenda (if any).
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 60974-7:2019 was approved by CENELEC as a European
Standard without any modification.
In the official version, for Bibliography, the following note has to be added for the standard indicated:
IEC 60974-2 NOTE Harmonized as EN 60974-2
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 60529 - Degrees of protection provided by enclosures (IP - -
Code)
IEC 60695-11-10 - Fire hazard testing - Part 11-10: Test flames - 50 EN 60695-11-10 -
W horizontal and vertical flame test methods
IEC 60974-1 2017 Arc welding equipment - Part 1: Welding power EN IEC 60974-1 2018
sources
Health and safety in welding and allied processes
ISO 21904-3 2018 EN ISO 21904-3 2018
- Requirements, testing and marking of equipment
for air filtration - Part 3: Determination of the
capture efficiency of on-torch welding fume
extraction devices
Annex ZZ
(informative)
Relationship between this European standard and the safety objectives of
Directive 2014/35/EU [2014 OJ L96] aimed to be covered
This European Standard has been prepared under a Commission’s standardization request relating to
harmonized standards in the field of the Low Voltage Directive, M/511, to provide one voluntary means
of conforming to safety objectives of Directive 2014/35/EU of the European Parliament and of the
Council of 26 February 2014 on the harmonization of the laws of the Member States relating to the
making available on the market of electrical equipment designed for use within certain voltage limits
[2014 OJ L96].
Once this standard is cited in the Official Journal of the European Union under that Directive,
compliance with the normative clauses of this standard given in Table ZZ.1 confers, within the limits of
the scope of this standard, a presumption of conformity with the corresponding safety objectives of
that Directive, and associated EFTA regulations.
Table ZZ.1 – Correspondence between this European standard and Annex I of Directive
2014/35/EU [2014 OJ L96]
Clause(s) / sub-clause(s)
Safety objectives of
Remarks / Notes
Directive 2014/35/EU
of this EN
1(a) Clauses 12, 13
1(b) Clause 13
Testing during periodic maintenance
1(c) or after repair is covered in separate
standards
2(a) Clauses 7, 13 k) and p)
Hazards arising from electric,
magnetic, and electromagnetic fields,
2(b) Clauses 7, 8 other ionizing and non-ionizing
radiation are covered in separate
standards
Clauses 6.3 b), 9, 10, 11.3, Acoustic noise is covered in separate
2(c)
13 i) 2) and n) standards
2(d) Clause 7.2, 7.3, 10
3(a) Clause 9, 10, 11
Functional safety is covered in
separate standards
3(b) Clauses 4, 11.3, 13 l) and n),
Safety-related security is covered in
separate standards
For this product type, there are no
3(c) not applicable
overload conditions.
WARNING 1 — Presumption of conformity stays valid only as long as a reference to this European
standard is maintained in the list published in the Official Journal of the European Union. Users of this
standard should consult frequently the latest list published in the Official Journal of the European
Union.
WARNING 2 — Other Union legislation may be applicable to the product(s) falling within the scope of
this standard.
IEC 60974-7 ®
Edition 4.0 2019-01
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Arc welding equipment –
Part 7: Torches
Matériel de soudage à l’arc –
Partie 7: Torches
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 25.160.30 ISBN 978-2-8322-6500-0
– 2 – IEC 60974-7:2019 © IEC 2019
CONTENTS
FOREWORD . 4
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 6
4 Environmental conditions . 9
5 Classification . 10
5.1 General . 10
5.2 Process . 10
5.3 Guidance . 10
5.4 Cooling . 10
5.5 Main arc striking for plasma processes . 10
6 Test conditions . 10
6.1 General . 10
6.2 Type tests . 11
6.3 Routine tests. 11
7 Protection against electric shock . 11
7.1 Voltage rating . 11
7.2 Insulation resistance . 12
7.3 Dielectric strength . 13
7.3.1 General requirement . 13
7.3.2 Additional requirements for plasma cutting TORCHES . 13
7.4 Protection against electric shock in normal service (direct contact) . 13
7.4.1 Degree of protection requirements . 13
7.4.2 Additional requirements for plasma cutting TORCHES . 13
7.5 Requirements for ARC STRIKING AND STABILIZING VOLTAGE rating . 14
7.5.1 General requirement . 14
7.5.2 ARC STRIKING AND STABILIZING VOLTAGE test . 14
8 Thermal rating . 15
8.1 General . 15
8.2 Temperature rise . 15
8.3 Heating test . 15
8.3.1 General . 15
8.3.2 Metal inert/active gas (MIG/MAG) or self-shielded flux-cored arc
welding TORCH . 16
8.3.3 Tungsten inert gas (TIG) and plasma arc welding TORCH . 18
8.3.4 Plasma cutting TORCH . 19
8.3.5 Submerged arc welding TORCH . 19
9 Pressure of the liquid cooling system . 20
10 Resistance to hot objects . 20
11 Mechanical provisions . 21
11.1 Impact resistance . 21
11.2 Accessible parts. 22
11.3 HANDLE material . 22
12 Marking . 22
13 Instructions for use . 22
IEC 60974-7:2019 © IEC 2019 – 3 –
Annex A (informative) Additional terminology . 24
Annex B (normative) Position of the welding TORCHES for the heating test. 27
Annex C (informative) Cooled copper block . 28
Annex D (informative) Copper block with a hole . 29
Annex E (informative) Copper bars
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.