BS-EN-61788-5-2001.pdf
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1、BRITISH STANDARD BS EN 61788-5:2001 Superconductivity Part 5: Matrix to superconductor volume ratio measurement Copper to superconductor volume ratio of Cu/Nb-Ti composite superconductors The European Standard EN 61788-5:2001 has the status of a British Standard ICS 29.050 ? Licensed Copy: sheffield
2、un sheffieldun, na, Thu Nov 09 04:26:52 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 61788-5:2001 This British Standard was published under the authority of the Standards Policy and Strategy Committee on 13 March 2003 BSI 13 March 2003 ISBN 0 580 41382 9 National foreword This British Standard i
3、s the official English language version of EN 61788-5:2001. It is identical with IEC 61788-5:2000. There has been no UK participation in the preparation of this document. This standard is published as part of the UKs obligation to give the status of a national standard to all standards prepared by C
4、ENELEC. Any enquiries on the text should be sent to the Head of Standards International content. From 1 January 1997, all IEC publications have the number 60000 added to the old number. For instance, IEC 27-1 has been renumbered as IEC 60027-1. For a period of time during the change over from one nu
5、mbering system to the other, publications may contain identifiers from both systems. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Corres
6、pondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online. 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 does not o
7、f 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 15 and a back cover. The BSI copyright date displayed in this document indicates when the document was last issued. Amendments issued since pu
8、blication Amd. No. DateComments Licensed Copy: sheffieldun sheffieldun, na, Thu Nov 09 04:26:52 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EUROPEAN STANDARDEN 61788-5 NORME EUROPENNE EUROPISCHE NORMApril 2001 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisat
9、ion Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central Secretariat: rue de Stassart 35, B - 1050 Brussels 2001 CENELEC -All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 61788-5:2001 E ICS 29.050 English version Superco
10、nductivity Part 5: Matrix to superconductor volume ratio measurement - Copper to superconductor volume ratio of Cu/Nb-Ti composite superconductors (IEC 61788-5:2000) Supraconductivit Partie 5: Mesure du rapport volumique matrice/supraconducteurs - Rapport volumique cuivre/supraconducteur des composi
11、tes supraconducteurs au Cu/Nb-Ti (CEI 61788-5:2000) Supraleitfhigkeit Teil 5: Messung des Verhltnisses von Matrixvolumen zu Supraleitervolumen - Verhltnis von Kupfervolumen zu Supraleitervolumen von Cu/Nb Ti-Verbundsupraleitern (IEC 61788-5:2000) This European Standard was approved by CENELEC on 200
12、0-12-01. 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
13、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
14、Central Secretariat has the same status as the official versions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerlan
15、d and United Kingdom. Licensed Copy: sheffieldun sheffieldun, na, Thu Nov 09 04:26:52 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Foreword The text of document 90/81/FDIS, future edition 1 of IEC 61788-5, prepared by IEC TC 90, Superconductivity, was submitted to the IEC-CENELEC parallel vote and was
16、 approved by CENELEC as EN 61788-5 on 2000-12-01. 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) 2001-10-01 latest date by which the national standards conflicting with the EN
17、 have to be withdrawn(dow) 2003-12-01 Annexes designated “normative“ are part of the body of the standard. Annexes designated “informative“ are given for information only. In this standard, annexes A and ZA are normative and annexes B to D are informative. Annex ZA has been added by CENELEC. _ Endor
18、sement notice The text of the International Standard IEC 61788-5:2000 was approved by CENELEC as a European Standard without any modification. _ Page 2 EN 617885:2001 Licensed Copy: sheffieldun sheffieldun, na, Thu Nov 09 04:26:52 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 68718-CEI 5:0200(E) 3 CONT
19、ENTS Page INTRODUCTION.4 Clause 1Scope.5 2Normative references .5 3Terminology .5 4Principle.6 5Chemicals 6 6Apparatus.6 7Measurement procedure.7 8Calculation of results9 9Precision and accuracy of the test method10 10Test report10 Annex A (normative) Copper to superconductor volume ratio copper mas
20、s method11 Annex B (informative) Specific mass of Nb-Ti 12 Annex C (informative) Mechanical removal of insulating cover materials 13 Annex D (informative) Second etch of specimen 14 Annex ZA (normative) Normative references to international publications with their corresponding European publications
21、 .15 Page 3 EN 617885:2001 Licensed Copy: sheffieldun sheffieldun, na, Thu Nov 09 04:26:52 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 4 8716-8 5 CEI:02(00)E INTRODUCTION The copper to superconductor volume ratio of composite superconductors is used mainly to calculate the critical current density of
22、 superconducting wires. The test with the method given in this International Standard may be used to provide part of the information needed to determine the suitability of a specific superconductor. Moreover, this method is useful for quality control, acceptance or research testing if the precaution
23、s given in this standard are observed. The test method given in this International Standard is based on the condition that the specific mass of Nb-Ti is known. If the specific mass of Nb-Ti and/or the fraction of Nb barrier are unknown, another method to determine the copper to superconductor volume
24、 ratio of composite superconductors is described in annex A. Page 4 EN 617885:2001 Licensed Copy: sheffieldun sheffieldun, na, Thu Nov 09 04:26:52 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 68718-CEI 5:0200(E) 5 SUPERCONDUCTIVITY Part 5: Matrix to superconductor volume ratio measurement Copper to su
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