BS-EN-60974-3-2007.pdf
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1、BRITISH STANDARD BS EN 60974-3:2007 Arc welding equipment Part 3: Arc striking and stabilizing devices ICS 25.160.30 ? Copyright British Standards Institution Provided by IHS under license with BSI - Uncontrolled Copy Licensee=Boeing Co/5910770001 Not for Resale, 08/14/2008 21:16:37 MDTNo reproducti
2、on or networking permitted without license from IHS -,-,- BS EN 60974-3:2007 This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 April 2008 BSI 2008 ISBN 978 0 580 56027 9 National foreword This British Standard is the UK implementation of EN
3、60974-3:2007. It is identical to IEC 60974-3:2007. It supersedes BS EN 60974-3:2003 which is withdrawn. The UK participation in its preparation was entrusted to Technical Committee WEE/6, Electric arc welding equipment. A list of organizations represented on this committee can be obtained on request
4、 to its secretary. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard cannot confer immunity from legal obligations. Amendments/corrigenda issued since publication DateComments
5、 Copyright British Standards Institution Provided by IHS under license with BSI - Uncontrolled Copy Licensee=Boeing Co/5910770001 Not for Resale, 08/14/2008 21:16:37 MDTNo reproduction or networking permitted without license from IHS -,-,- EUROPEAN STANDARD EN 60974-3 NORME EUROPENNE EUROPISCHE NORM
6、 December 2007 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central Secretariat: rue de Stassart 35, B - 1050 Brussels 2007 CENELEC - All rights of exploitation in any form and by any
7、means reserved worldwide for CENELEC members. Ref. No. EN 60974-3:2007 E ICS 25.160 Supersedes EN 60974-3:2003 English version Arc welding equipment - Part 3: Arc striking and stabilizing devices (IEC 60974-3:2007) Matriel de soudage larc - Partie 3: Dispositifs damorage et de stabilisation de larc
8、(CEI 60974-3:2007) Lichtbogenschweieinrichtungen - Teil 3: Lichtbogenznd- und -stabilisierungseinrichtungen (IEC 60974-3:2007) This European Standard was approved by CENELEC on 2007-12-01. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions fo
9、r 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 offi
10、cial 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 comm
11、ittees 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 Uni
12、ted Kingdom. Copyright British Standards Institution Provided by IHS under license with BSI - Uncontrolled Copy Licensee=Boeing Co/5910770001 Not for Resale, 08/14/2008 21:16:37 MDTNo reproduction or networking permitted without license from IHS -,-,- Foreword The text of document 26/363/FDIS, futur
13、e edition 2 of IEC 60974-3, prepared by IEC TC 26, Electric welding, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as EN 60974-3 on 2007-12-01. This European Standard supersedes EN 60974-3:2003. EN 60974-3:2007 includes the following significant technical changes with re
14、spect to EN 60974-3:2003: changes induced by the publication of EN 60974-1:2005; routine test for built-in unit (see 5.5.2); clarification of calculation of the rated peak voltage (see 11.1 and Figure 1). This standard is to be used in conjunction with EN 60974-1:2005. The following dates were fixed
15、: latest date by which the EN has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2008-09-01 latest date by which the national standards conflicting with the EN have to be withdrawn (dow) 2010-12-01 Annex ZA has been added by CENELEC. _ En
16、dorsement notice The text of the International Standard IEC 60974-3:2007 was approved by CENELEC as a European Standard without any modification. _ 2 BS EN 60974-3:2007 Copyright British Standards Institution Provided by IHS under license with BSI - Uncontrolled Copy Licensee=Boeing Co/5910770001 No
17、t for Resale, 08/14/2008 21:16:37 MDTNo reproduction or networking permitted without license from IHS -,-,- CONTENTS 1 2 3 4 5 5.1 5.2 5.3 5.4 5.5 6 6.1 6.2 6.3 7 8 9 Annex A (informative) Examples of coupling systems for arc striking and stabilizing 3 BS EN 60974-3:2007 Scope.5 Normative references
18、 .5 Terms and definitions .5 Environmental conditions6 Tests6 Test conditions6 Measuring instruments 6 Conformity of components.6 Type tests .6 Routine tests.6 Protection against electric shock 7 Insulation 7 Protection against electric shock in normal service (direct contact) .8 Protection against
19、electric shock in case of a fault condition (indirect contact) 8 Thermal requirements.8 Abnormal operation 8 Thermal protection .9 10 Connection to the input supply network 9 11 Output 9 11.1 Rated peak voltage .9 11.2 Impulse current .10 11.3 Mean energy .13 11.4 Output circuit capacitance discharg
20、ing 13 12 Control circuits .14 13 Hazard reducing device14 14 Mechanical provisions 14 15 Rating plate14 16 Adjustment of the output.15 17 Instructions and markings.15 17.1 Instructions .15 17.2 Markings .16 devices .17 Annex B (informative) Example of a rating plate.18 Figure 1 Rated peak voltage 9
21、 Figure 2 Measurement of electric charge of impulse current 10 Figure 3 Arc striking and stabilizing voltage .11 Figure 4 Measuring circuit for direct contact.11 Annex ZA (normative) Normative references to international publications with their corresponding European publications 19 Copyright Britis
22、h Standards Institution Provided by IHS under license with BSI - Uncontrolled Copy Licensee=Boeing Co/5910770001 Not for Resale, 08/14/2008 21:16:37 MDTNo reproduction or networking permitted without license from IHS -,-,- Table 1 Minimum clearances and creepage distances for arc striking and stabil
23、izing 4 BS EN 60974-3:2007 Figure A.1 Examples of coupling systems for arc striking and stabilizing devices17 Figure B.1 Stand-alone unit .18 circuits7 Table 2 Maximum rated peak voltages .10 Figure 5 Measuring circuit for serial contact.13 Figure 6 Measuring circuit for capacitance discharging 14 C
24、opyright British Standards Institution Provided by IHS under license with BSI - Uncontrolled Copy Licensee=Boeing Co/5910770001 Not for Resale, 08/14/2008 21:16:37 MDTNo reproduction or networking permitted without license from IHS -,-,- ARC WELDING EQUIPMENT Part 3: Arc striking and stabilizing dev
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