1、 IEC 61788-21 Edition 1.0 2015-05 INTERNATIONAL STANDARD NORME INTERNATIONALE Superconductivity Part 21: Superconducting wires Test methods for practical superconducting wires General characteristics and guidance Supraconductivit Partie 21: Fils supraconducteurs Mthodes dessai pour fils supraconduct
2、eurs usage pratique Caractristiques gnrales et lignes directrices IEC 61788-21:2015-05(en-fr) THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2015 IEC, Geneva, Switzerland All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by a
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20、nductivity Part 21: Superconducting wires Test methods for practical superconducting wires General characteristics and guidance Supraconductivit Partie 21: Fils supraconducteurs Mthodes dessai pour fils supraconducteurs usage pratique Caractristiques gnrales et lignes directrices INTERNATIONAL ELECT
21、ROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE ICS 17.220; 29.050; 77.040.10 ISBN 978-2-8322-2691-9 Registered trademark of the International Electrotechnical Commission Marque dpose de la Commission Electrotechnique Internationale Warning! Make sure that you obtained this publica
22、tion from an authorized distributor. Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agr. 2 IEC 61788-21:2015 IEC 2015 CONTENTS FOREWORD . 3 INTRODUCTION . 5 1 Scope 6 2 Normative references 6 3 Terms and definitions 7 4 Characteristic attributes of practi
23、cal SC wires 7 5 Categories of properties 7 6 Properties governed by IEC standards . 7 6.1 General . 7 6.2 Properties referring to the operation of SC wires . 7 6.3 Properties related to implementation and engineering . 8 Annex A (informative) Characteristic attributes of practical SC wires 9 A.1 Ge
24、neral . 9 A.2 Critical temperature 9 A.3 Critical magnetic and irreversibility fields 9 A.4 Critical current and n-value . 10 A.5 Stability. 10 A.6 AC loss . 10 A.7 Strain-dependent superconducting properties . 10 A.8 Mechanical properties . 11 A.9 Uniformity of properties . 11 Bibliography 12 IEC 6
25、1788-21:2015 IEC 2015 3 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ SUPERCONDUCTIVITY Part 21: Superconducting wires Test methods for practical superconducting wires General characteristics and guidance FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide organization for s
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35、 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 sh
36、all not be held responsible for identifying any or all such patent rights. International Standard IEC 61788-21 has been prepared by IEC technical committee 90: Superconductivity. The text of this standard is based on the following documents: FDIS Report on voting 90/353/FDIS 90/354/RVD Full informat
37、ion 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. A list of all the parts in the IEC 61788 series, published under the general title Superconducti
38、vity, can be found on the IEC website. 4 IEC 61788-21:2015 IEC 2015 The committee has decided that the contents of this publication will remain unchanged until the stability date indicated on the IEC web site under “http:/webstore.iec.ch“ in the data related to the specific publication. At this date
39、, the publication will be reconfirmed, withdrawn, replaced by a revised edition, or amended. IEC 61788-21:2015 IEC 2015 5 INTRODUCTION Superconducting (SC) wires are a central and often enabling technology of many important industrial products. Consensus-based standards for SC wires greatly facilita
40、te the creation of procurement specifications, design and engineering of components, certification of quality, description of operating devices, and generalization of use in industrial technologies. This part of IEC 61788 is ranked as a first priority for both producers and users of superconducting
41、technology: It provides the measurement methods and test procedures for properties critical to use. Adherence to normative information assists the development of commercial markets and the distribution of products. Standardization in this regard is meant to provide common access to, and unarguable r
42、eference information about, characteristics that are most important for superconductor-based technologies. This part of IEC 61788 includes the measurement principles and measurement techniques together with the relevant terminology and definitions. Specifications of SC wire products take into accoun
43、t the function of the different components of SC wires to meet operational needs, maintain operational (superconducting) conditions, and accommodate mechanical forces and strains. The various forms of SC wire products distributed by manufacturers incorporate these aspects to varying degrees, dependi
44、ng on the superconducting materials used and the intended operating conditions/environment. Design and engineering of devices that use SC wire products take into account the unique properties of SC wires during operation. The general features of practical SC wires are described in IEC TR 61788-20 in
45、 terms of simple general characteristics to assist in the specification and use of superconducting wire products. Testing, certification, and quality control apply the relevant standard test methods to SC wires, which are specified in this part of IEC 61788. 6 IEC 61788-21:2015 IEC 2015 SUPERCONDUCT
46、IVITY Part 21: Superconducting wires Test methods for practical superconducting wires General characteristics and guidance 1 Scope This part of IEC 61788 specifies the test methods used for validating the mechanical, electrical, and superconducting properties of practical SC wires. A wire is conside
47、red as being practical if it can be procured in sufficiently continuous lengths under ordinary commercial transactions to build devices. Conductors made of multiple wires, such as cables, are not included in the scope of this part of IEC 61788. Extension of the discussions in this part of IEC 61788
48、beyond practical SC wires is not intended, even though referenced documents include aspects outside of this scope. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only th
49、e edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. IEC 60050 (all parts), International Electrotechnical Vocabulary. Available from: http:/www.electropedia.org IEC 61788-1, Superconductivity Part 1: Critical current measurement DC critical current of Nb-Ti composite superconductors IEC 61788-2, Superconductivity Part 2:
