1、| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | BRITISH STANDARD BS EN 60044-7:2000 IEC 60
2、044-7:1999 The European Standard EN 60044-7:2000 has the status of a British Standard ICS 17.220.20 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW Instrument transformers Part 7: Electronic voltage transformersThis British Standard, having been prepared under the direction of
3、 the Electrotechical Sector Committee, was published under the authority of the Standards Committee and comes into effect on 15 May 2000 BSI 05-2000 ISBN 0 580 34336 7 BS EN 60044-7:2000 Amendments issued since publication Amd. No. Date Comments National foreword This British Standard is the officia
4、l English language version of EN 60044-7:2000. It is identical with IEC 60044-7:1999. The UK participation in its preparation was entrusted to Technical Committee PEL/38, Instrument transformers, which has the responsibility to: aid enquirers to understand the text; present to the responsible Europe
5、an committee any enquiries on the interpretation, or proposals for change, and 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. The
6、 UK National Committee voted against publication of this standard and submitted a list of objections. In general, the standard does not include the detail and content of the equivalent standard, for current transformers which is in preparation in IEC. Items to which objections were raised included t
7、he following: The term “Transformers” in the title was felt to be inappropriate and the term “Transducers” was recommended in its place. The properties of the inherent wide bandwidth of some non-conventional sensors are ignored. Insufficient attention is given to the effects of vibration on sensors,
8、 for example those which are installed as intergral parts of switchgear. Digital outputs are not standardized. Temperature rise test acceptance and modality are not detailed. From 1 January 1997, all IEC publications have the number 60000 added to the old number. For instance, IEC 27-1 has been renu
9、mbered 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 include an annex which lists normative references
10、 to international publications with their corresponding European publications. The British Standards which implement these international or European publications may be found in the BSI Standards Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Fi
11、nd” 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 a British Standard does not of itself confer immunity from lega
12、l obligations. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 72, an inside back cover and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued.Page 2 EN 60044-7:2000%6, &217(176 3D
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