EN 61788-3:2006
(Main)Superconductivity - Part 3: Critical current measurement - DC critical current of Ag- and/or Ag alloy-sheathed Bi-2212 and Bi-2223 oxide superconductors
Superconductivity - Part 3: Critical current measurement - DC critical current of Ag- and/or Ag alloy-sheathed Bi-2212 and Bi-2223 oxide superconductors
This part of IEC 61788 covers a test method for the determination of the dc critical current of short and straight Ag- and/or Ag alloy-sheathed Bi-2212 and Bi-2223 oxide superconductors that have a monolithic structure and a shape of round wire or flat or square tape containing mono- or multicores of oxides. This method is intended for use with superconductors that have critical currents less than 500 A and n-values larger than 5. The test is carried out with and without an applying external magnetic field. For all tests in a magnetic field, the magnetic field is perpendicular to the length of the specimen. In the test of a tape specimen in a magnetic field, the magnetic field is parallel or perpendicular to the wider tape surface (or one surface if square). The test specimen is immersed either in a liquid helium bath or a liquid nitrogen bath during testing. Deviations from this test method that are allowed for routine tests and other specific restrictions are given in this standard.
Supraleitfähigkeit --Teil 3: Messen des kritischen Stromes - Kritischer Strom (Gleichstrom) von Ag- und/oder Ag-Legierung ummantelten oxidischen Bi-2212 und Bi-2223-Supraleitern
Supraconductivité - Partie 3: Mesure du courant critique - Courant critique continu des oxydes supraconducteurs Bi-2212 et Bi-2223 avec gaine Ag et/ou en alliage d'Ag
Superprevodnost - 3. del: Meritve kritičnega toka - Enosmerni kritični tok pri Bi-2212 in Bi-2223 oksidnih superprevodnikih, oklopljenih z Ag in/ali zlitinami Ag (IEC 61788-3:2006)
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SLOVENSKI SIST EN 61788-3:2007
STANDARD
januar 2007
Superprevodnost - 3. del: Meritve kritičnega toka - Enosmerni kritični tok pri
Bi-2212 in Bi-2223 oksidnih superprevodnikih, oklopljenih z Ag in/ali zlitinami
Ag (IEC 61788-3:2006)
(istoveten EN 61788-3:2006)
Superconductivity - Part 3: Critical current measurement - DC critical current of Ag-
and/or Ag alloy-sheathed Bi-2212 and Bi-2223 oxide superconductors (IEC 61788-
3:2006)
ICS 17.220.20; 29.050 Referenčna številka
© Standard je založil in izdal Slovenski inštitut za standardizacijo. Razmnoževanje ali kopiranje celote ali delov tega dokumenta ni dovoljeno
EUROPEAN STANDARD
EN 61788-3
NORME EUROPÉENNE
August 2006
EUROPÄISCHE NORM
ICS 17.220; 29.050 Supersedes EN 61788-3:2001
English version
Superconductivity
Part 3: Critical current measurement -
DC critical current of Ag- and/or Ag alloy-sheathed
Bi-2212 and Bi-2223 oxide superconductors
(IEC 61788-3:2006)
Supraconductivité Supraleitfähigkeit
Partie 3: Mesure du courant critique - Teil 3: Messen des kritischen Stromes -
Courant critique continu des oxydes Kritischer Strom (Gleichstrom) von
supraconducteurs Bi-2212 et Bi-2223 Ag- und/oder Ag-Legierung ummantelten
avec gaine Ag et/ou en alliage d'Ag oxidischen Bi-2212 und
(CEI 61788-3:2006) Bi-2223-Supraleitern
(IEC 61788-3:2006)
This European Standard was approved by CENELEC on 2006-06-01. 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 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 Central Secretariat has the same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Cyprus, the Czech
Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain,
Sweden, Switzerland and the United Kingdom.
CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
Central Secretariat: rue de Stassart 35, B - 1050 Brussels
© 2006 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 61788-3:2006 E
Foreword
The text of document 90/184/FDIS, future edition 2 of IEC 61788-3, prepared by IEC TC 90,
Superconductivity, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as
EN 61788-3 on 2006-06-01.
This European Standard supersedes EN 61788-3:2001.
Modifications made to EN 61788-3:2001 mostly involve wording and essentially include no technical
changes.
Examples of technical changes introduced include the voltage lead diameter being smaller than 0,21 mm
and the mode of expression for magnetic field accuracy being ± 1 % and ± 0,02 T instead of 1 %. The
expression for magnetic field precision has been changed in the same way.
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) 2007-03-01
– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2009-06-01
Annex ZA has been added by CENELEC.
__________
Endorsement notice
The text of the International Standard IEC 61788-3:2006 was approved by CENELEC as a European
Standard without any modification.
__________
- 3 - EN 61788-3:2006
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
The following referenced documents are indispensable for the application of this document. For dated
references, only the edition cited applies. For undated references, the latest edition of the referenced
document (including any amendments) applies.
NOTE When an international publication has been modified by common modifications, indicated by (mod), the relevant EN/HD
applies.
Publication Year Title EN/HD Year
IEC 60050-815 2000 International Electrotechnical Vocabulary - -
(IEV)
Part 815: Superconductivity
INTERNATIONAL IEC
STANDARD 61788-3
Second edition
2006-04
Superconductivity –
Part 3:
Critical current measurement –
DC critical current of Ag- and/or Ag alloy-sheathed
Bi-2212 and Bi-2223 oxide superconductors
IEC 2006 Copyright - all rights reserved
No part of this publication may be reproduced or utilized in any form or by any means, electronic or
mechanical, including photocopying and microfilm, without permission in writing from the publisher.
International Electrotechnical Commission, 3, rue de Varembé, PO Box 131, CH-1211 Geneva 20, Switzerland
Telephone: +41 22 919 02 11 Telefax: +41 22 919 03 00 E-mail: inmail@iec.ch Web: www.iec.ch
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International Electrotechnical Commission
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For price, see current catalogue
– 2 – 61788-3 IEC:2006(E)
CONTENTS
FOREWORD.3
INTRODUCTION.5
1 Scope.6
2 Normative reference .6
3 Terms and definitions .6
4 Principle .8
5 Requirements .8
6 Apparatus.8
7 Specimen preparation.9
8 Measurement procedure.10
9 Precision and accuracy of the test method.11
10 Calculation of results .12
11 Test report.13
Annex A (informative) Additional information relating to Clauses 1 to 10 .15
Annex B (informative) Magnetic hysteresis of the critical current of high-temperature
oxide superconductors.21
Bibliography.23
Figure 1 – Intrinsic U-I characteristic .14
Figure 2 – U-I characteristic with a current transfer component.14
Figure A.1 – Illustration of a measurement configuration for a short specimen of a few
hundred A class conductors .20
Figure A.2 – Illustration of superconductor simulator circuit .20
Table A.1 – Thermal expansion data of Bi-oxide superconductor and selected materials .19
61788-3 IEC:2006(E) – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
__________
SUPERCONDUCTIVITY –
Part 3: Critical current measurement –
DC critical current of Ag- and/or Ag alloy-sheathed
Bi-2212 and Bi-2223 oxide superconductors
FOREWORD
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interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
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arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC Publications.
8) Attention 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 shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 61788-3 has been prepared by IEC technical committee 90:
Superconductivity.
This second edition cancels and replaces the first edition published in 2000. Modifications made
to the second version mostly involve wording and essentially include no technical changes.
Examples of technical changes introduced include the voltage lead diameter being smaller than
0,21 mm and the mode of expression for magnetic field accuracy being ±1 % and ±0,02 T
instead of 1 %. The expression for magnetic field precision has been changed in the same way.
The text of this standard is based on the following documents:
FDIS Report on voting
90/184/FDIS 90/190/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.
– 4 – 61788-3 IEC:2006(E)
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
IEC 61788 consists of the following parts, under the general title Superconductivity:
Part 1: Critical current measurement – DC critical current of Cu/Nb-Ti composite super-
conductors
Part 2: Critical current measurement – DC critical current of Nb Sn composite super-
conductors
Part 3: Critical current measurement – DC critical current of Ag- and/or Ag alloy-sheathed
Bi-2212 and Bi-2223 oxide superconductors
Part 4: Residual resistance ratio measurement – Residual resistance ratio of Nb-Ti
composite superconductors
Part 5: Matrix to superconductor volume ratio measurement – Copper to superconductor
volume ratio of Cu/Nb-Ti composite superconductors
Part 6: Mechanical properties measurement – Room temperature tensile test of Cu/Nb-Ti
composite superconductors
Part 7: Electronic characteristic measurements – Surface resistance of superconductors at
microwave frequencies
Part 8: AC loss measurements – Total AC loss measurement of Cu/Nb-Ti composite
superconducting wires exposed to a transverse alternating magnetic field by a pickup
coil method
Part 9: Measurements for bulk high temperature superconductors – Trapped flux density of
large grain oxide superconductors
Part 10: Critical temperature measurement – Critical temperature of Nb-Ti, Nb Sn, and
Bi-system oxide composite superconductors by a resistance method
Part 11: Residual resistance ratio measurement – Residual resistance ratio of Nb Sn
composite superconductors
Part 12: Matrix to superconductor volume ratio measurement – Copper to non-copper volume
ratio of Nb Sn composite superconducting wires
Part 13: AC loss measurements – Magnetometer methods for hysteresis loss in Cu/Nb-Ti
multifilamentary composites
The committee has decided that the contents of this publication
...
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