1、 IEC 61788-14 Edition 1.0 2010-06 INTERNATIONAL STANDARD NORME INTERNATIONALE Superconductivity Part 14: Superconducting power devices General requirements for characteristic tests of current leads designed for powering superconducting devices Supraconductivit Partie 14 : Dispositifs supraconducteur
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20、8-14 Edition 1.0 2010-06 INTERNATIONAL STANDARD NORME INTERNATIONALE Superconductivity Part 14: Superconducting power devices General requirements for characteristic tests of current leads designed for powering superconducting devices Supraconductivit Partie 14 : Dispositifs supraconducteurs de puis
21、sance Exigences gnrales pour les essais de caractristiques damenes de courant conues pour alimenter des dispositifs supraconducteurs INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE U ICS 29.050 PRICE CODE CODE PRIX ISBN 978-2-8322-1468-8 Registered trademark of t
22、he International Electrotechnical Commission Marque dpose de la Commission Electrotechnique Internationale Warning! Make sure that you obtained this publication from an authorized distributor. Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agr. 2 IEC 6178
23、8-14:2010 IEC 2010 CONTENTS FOREWORD . 3 INTRODUCTION . 5 1 Scope . 6 2 Normative references . 6 3 Terms and definitions . 6 4 Principles . 7 5 Characteristic test items . 8 6 Characteristic test methods 9 6.1 Structure inspection 9 6.2 Stress/strain effect test 10 6.3 Thermal property test 10 6.4 R
24、ated current-carrying test 11 6.5 Contact resistance test 12 6.6 Voltage drop test . 12 6.7 High voltage test . 12 6.8 Pressure drop test . 13 6.9 Leak tightness test 13 6.10 Safety margin test . 14 7 Reporting . 15 8 Precautions 15 Annex A (informative) Supplementary information relating to Clauses
25、 1 to 8 . 16 Annex B (informative) Typical current leads 18 Annex C (informative) Explanation figures to facilitate understanding of test methods 22 Annex D (informative) Test items and methods for a HTS component . 24 Bibliography 26 Figure B.1 Schematic diagram of self-cooled normal conducting cur
26、rent leads . 18 Figure B.2 Schematic diagram of forced flow cooled normal conducting current leads . 19 Figure B.3 Schematic diagram of current leads composed of forced flow cooled normal conducting section and HTS section in vacuum environment 19 Figure B.4 Schematic diagram of current leads compos
27、ed of forced flow cooled normal conducting section and HTS section in GHe environment . 20 Figure B.5 Schematic diagram of current leads composed of LN 2 /GN 2 /GHe cooled normal conducting section and self-sufficient evaporated helium cooled HTS section . 20 Figure B.6 Schematic diagram of current
28、leads composed of conduction cooled normal conducting section and HTS section . 21 Figure C.1 Schematic drawing of a temperature profile during the rated current-carrying test 22 Figure C.2 Schematic drawing of a pressure dependency of the breakdown voltage in the Paschen tightness test 22 Figure C.
29、3 Schematic drawing of a time dependency of the voltage rise at the quench test 23 Table 1 Characteristic test items and test execution stages for current leads . 9 Table D.1 Characteristic test items for a HTS component 24 IEC 61788-14:2010 IEC 2010 3 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ SUP
30、ERCONDUCTIVITY Part 14: Superconducting power devices General requirements for characteristic tests of current leads designed for powering superconducting devices FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising all national e
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41、ing any or all such patent rights. International Standard IEC 61788-14 has been prepared by IEC technical committee 90: Superconductivity. This bilingual version (2014-03) corresponds to the monolingual English version, published in 2010-06. The text of this standard is based on the following docume
42、nts: FDIS Report on voting 90/244/FDIS 90/250/RVD Full information on the voting for the approval of this standard can be found in the report on voting indicated in the above table. The French version of this standard has not been voted upon. 4 IEC 61788-14:2010 IEC 2010 This publication has been dr
43、afted in accordance with the ISO/IEC Directives, Part 2. A list of all parts of the IEC 61788 series, published under the general title Superconductivity, can be found on the IEC website. The committee has decided that the contents of this publication will remain unchanged until the stability date i
44、ndicated on the IEC web site under “http:/webstore.iec.ch“ in the data related to the specific publication. At this date, the publication will be reconfirmed, withdrawn, replaced by a revised edition, or amended. IEC 61788-14:2010 IEC 2010 5 INTRODUCTION Current leads are indispensable components of
45、 superconducting devices in practical uses such as MRI diagnostic equipment, NMR spectrometers, single crystal growth devices, SMES, particle accelerators such as Tevatron, HERA, RHIC and LHC, experimental test instruments for nuclear fusion reactors, such as ToreSupra, TRIAM, LHD, EAST, KSTAR, W7-X
46、, JT-60SA and ITER, etc., and of advanced superconducting devices in the near future in practical uses such as magnetic levitated trains, superconducting fault current limiters, superconducting transformers, etc. The major functions of current leads are to power high currents into superconducting de
47、vices and to minimize the overall heat load, including heat leakage from room temperature to cryogenic temperature and Joule heating through current leads. For this purpose, current leads are dramatically effective for lowering the overall heat load to use the high temperature superconducting compon
48、ent as a part of the current leads. On the other hand, the current lead technologies applied to superconducting devices depend on each application, as well as on the manufacturers experience and accumulated know-how. Due to their use as component parts, it is difficult to judge the compatibility, fl
49、exibility between devices, convenience, overall economical efficiency, etc of current leads. This may impede progress in the growth and development of superconducting equipment technology and its application to commercial activities, which is a cause for concern. Consequently, it is judged industrially effective to clarify the definition of current leads to be applied to superconducting devices and to stan
