IEC 61788-21:2015

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

Supraconductivité –
Partie 21: Fils supraconducteurs – Méthodes d’essai pour fils supraconducteurs
à usage pratique – Caractéristiques générales et lignes directrices

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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

Supraconductivité –
Partie 21: Fils supraconducteurs – Méthodes d’essai pour fils supraconducteurs

à usage pratique – Caractéristiques générales et lignes directrices

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 17.220; 29.050; 77.040.10 ISBN 978-2-8322-2691-9

– 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 practical 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 General . 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

INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
SUPERCONDUCTIVITY –
Part 21: Superconducting wires –
Test methods for practical superconducting wires –
General characteristics and guidance

FOREWORD
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rights. IEC shall 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 information 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
Superconductivity, 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, the publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
INTRODUCTION
Superconducting (SC) wires are a central and often enabling technology of many important
industrial products. Consensus-based standards for SC wires greatly facilitate 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 technology: It provides the measurement methods and test procedures fo
...