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1、| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | BRITISH STANDARD BS EN 60974-7:2000 IEC 60
2、974-7:2000 The European Standard EN 60974-7:2000 has the status of a British Standard ICS 25.160.30 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW Arc welding equipment Part 7: Torches Licensed Copy: sheffieldun sheffieldun, na, Thu Nov 09 09:16:00 GMT+00:00 2006, Uncontrolle
3、d Copy, (c) BSI This British Standard, having been prepared under the direction of the Engineering Sector Committee, was published under the authority of the Standards Committee and comes into effect on 15 December 2000 BSI 12-2000 ISBN 0 580 35898 4 BS EN 60974-7:2000 Amendments issued since public
4、ation Amd. No.DateComments National foreword This British Standard is the official English language version of EN 60974-7:2000. It is identical with IEC 60974-7:2000. It supersedes BS EN 50078:1994 and together with BS EN 60974-1:1998 incorporating Amendment No. 1 it supersedes BS EN 50192:1996. The
5、 UK participation in its preparation was entrusted to Technical Committee WEE/6, Arc welding equipment, which has the responsibility to: aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and
6、 keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. A list of organizations represented on this committee can be obtained on request to its secretary. From 1 January 1997, all IEC publications have the number 60000 added to the old
7、number. For instance, IEC 27-1 has been renumbered as IEC 60027-1. For a period of time during the change over from one numbering system to the other, publications may contain identifiers from both systems. Cross-references Attention is drawn to the fact that CEN and CENELEC Standards normally inclu
8、de an annex which lists normative references to international publications with their corresponding European publications. The British Standards which implement international or European publications referred to in this document may be found in the BSI Standards Catalogue under the section entitled
9、International Standards Correspondence Index, or by using the Find facility of the BSI Standards Electronic Catalogue. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with
10、a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 28, an inside back cover and a back cover. The BSI copyright notice displayed in this document indicates when the
11、 document was last issued. Licensed Copy: sheffieldun sheffieldun, na, Thu Nov 09 09:16:00 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Licensed Copy: sheffieldun sheffieldun, na, Thu Nov 09 09:16:00 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Page 2 EN 609747:2000 Licensed Copy: sheffieldun sheffieldu
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37、6:00 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Licensed Copy: sheffieldun sheffieldun, na, Thu Nov 09 09:16:00 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 60974-7:2000 IEC 60974-7:2000 BSI 389 Chiswick High Road London W4 4AL | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
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39、. It presents the UK view on standards in Europe and at the international level. It is incorporated by Royal Charter. Revisions British Standards are updated by amendment or revision. Users of British Standards should make sure that they possess the latest amendments or editions. It is the constant aim of BSI to improve the quality of our products and services. We would be grateful if anyone finding an inaccuracy or ambiguity while using this British Sta