SIST EN 60974-2:2008
Arc welding equipment -- Part 2: Liquid cooling systems
Arc welding equipment -- Part 2: Liquid cooling systems
This part of IEC 60974 specifies safety and construction requirements for industrial and professional liquid cooling systems used in arc welding and allied processes to cool torches. This part of IEC 60974 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 part of IEC 60974 is not applicable to refrigerated cooling systems.
Lichtbogenschweißeinrichtungen -- Teil 2: Flüssigkeitskühlsysteme
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.
Oprema za obločno varjenje - 2. del: Hladilni sistemi s tekočino (IEC 60974-2:2007)
General Information
Relations
Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Arc welding equipment - Part 2: Liquid cooling systemsMatériel de soudage à l'arc - Partie 2: Systèmes de refroidissement par liquideLichtbogenschweißeinrichtungen - Teil 2: Flüssigkeitskühlsysteme25.160.30Varilna opremaWelding equipmentICS:SIST EN 60974-2:2008en,fr,deTa slovenski standard je istoveten z:EN 60974-2:200801-junij-2008SIST EN 60974-2:2008SLOVENSKI
STANDARDSIST EN 60974-2:20031DGRPHãþD
EUROPEAN STANDARD EN 60974-2 NORME EUROPÉENNE
EUROPÄISCHE NORM February 2008
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
© 2008 CENELEC -
All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 60974-2:2008 E
ICS 25.160 Supersedes EN 60974-2:2003
English version
Arc welding equipment -
Part 2: Liquid cooling systems (IEC 60974-2:2007)
Matériel de soudage à l'arc -
Partie 2: Systèmes
de refroidissement par liquide (CEI 60974-2:2007)
Lichtbogenschweißeinrichtungen -
Teil 2: Flüssigkeitskühlsysteme (IEC 60974-2:2007)
This European Standard was approved by CENELEC on 2008-02-01. 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, Bulgaria, 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.
EN 60974-2:2008
– 2 – Foreword The text of document 26/362/FDIS, future edition 2 of IEC 60974-2, prepared by IEC TC 26, Electric welding, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as EN 60974-2 on 2008-02-01. This European Standard supersedes EN 60974-2:2003. EN 60974-2:2007 includes the following significant technical changes with respect to EN 60974-2:2003: – changes induced by the publication of EN 60974-1:2005; – introduction of a set-up for torch simulation during leakage test; – complementary requirement for attachment plug in 125 V supply network; – introduction of new items in instructions; – correction of density value for water/alcohol (50/50); – improvement of rating plate example. This standard is to be used in conjunction with EN 60974-1:2005. 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) 2008-11-01 – latest date by which the national standards conflicting
with the EN have to be withdrawn
(dow) 2011-02-01 Annex ZA has been added by CENELEC. __________ Endorsement notice The text of the International Standard IEC 60974-2:2007 was approved by CENELEC as a European Standard without any modification. __________
– 3 – EN 60974-2:2008
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 60974-1 2005 Arc welding equipment -
Part 1: Welding power sources EN 60974-1 2005
IEC 60974-7 2005 Arc welding equipment -
Part 7: Torches EN 60974-7 2005
IEC 60974-10 – 1) Arc welding equipment -
Part 10: Electromagnetic compatibility (EMC) requirements EN 60974-10 2007 2)
1) Undated reference.
2) Valid edition at date of issue.
IEC 60974-2Edition 2.0 2007-11INTERNATIONAL STANDARD NORME INTERNATIONALEArc 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 INTERNATIONALE QICS 25.160 PRICE CODECODE PRIXISBN 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 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 provides no marking procedure to indicate its approval and cannot be rendered responsible for any equipment declared to be in conformity with an IEC Publication. 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 60974-2 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 edition includes the following significant technical changes with respect to the previous edition: – changes induced by the publication of IEC 60974-1, edition 3; – introduction of a set-up for torch simulation during leakage test; – complementary requirement for attachment plug in 125 V supply network; – introduction of new items in instructions; – correction of density value for water/alcohol (50/50); – improvement of rating plate example.
60974-2 © IEC:2007 – 5 – The text of this standard is based on the following documents: FDIS Report on voting 26/362/FDIS 26/366/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. This standard shall be used in conjunction with IEC 60974-1. The list of all parts of IEC 60974, under the general title Arc welding equipment, can be found on the IEC web site. The committee has decided that the contents of this publication will remain unchanged until the maintenance result 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.
– 6 – 60974-2 © IEC:2007 ARC WELDING EQUIPMENT –
Part 2: Liquid cooling systems
1 Scope This part of IEC 60974 specifies safety and construction requirements for industrial and professional liquid cooling systems used in arc welding and allied processes to cool torches.
This part of IEC 60974 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 part of IEC 60974 is not applicable to refrigerated cooling systems. NOTE 1 Typical allied processes are, for example, plasma arc cutting and arc spraying. NOTE 2 This part of IEC 60974 does not include electromagnetic compatibility (EMC) requirements. 2 Normative references The following referenced documents are indispensable for the appl
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.