Superconductivity - Part 11: Residual resistance ratio measurement - Residual resistance ratio of Nb3Sn composite superconductors

IEC 61788-11:2011 covers a test method for the determination of the residual resistance ratio (RRR) of Nb3Sn composite superconductors. This method is intended for use with superconductor specimens that have a monolithic structure with rectangular or round cross-section, RRR less than 350 and cross-sectional area less than 3 mm2, and have received a reaction heat-treatment. Ideally, it is intended that the specimens be as straight as possible; however, this is not always the case, thus care must be taken to measure the specimen in its as received condition. All measurements are done without an applied magnetic field. The method described in the body of this standard is the 'reference' method and optional acquisition methods are outlined in Clause A.3. This second edition cancels and replaces the first edition published in 2003. It constitutes a technical revision. The main revisions are the addition of two new annexes, 'Uncertainty considerations' (Annex B) and 'Uncertainty evaluation in test method of RRR for Nb3Sn' (Annex C).

Supraleitfähigkeit - Teil 11: Messung des Restwiderstandsverhältnisses - Restwiderstandsverhältnis von Nb3Sn-Verbundsupraleitern

Supraconductivité - Partie 11: Mesure du rapport de résistance résiduelle - Rapport de résistance résiduelle des supraconducteurs composites de Nb3Sn

La CEI 61788-11:2011 spécifie une méthode d'essai pour la détermination du rapport de résistance résiduelle (RRR) des supraconducteurs composites de Nb3Sn. Cette méthode est destinée à être utilisée avec des éprouvettes de supraconducteurs présentant une structure monolithique avec une section rectangulaire ou circulaire, un rapport RRR inférieur à 350 et une surface de section inférieure à 3 mm2, et qui ont reçu un traitement thermique de réaction. Dans l'absolu, il est prévu que les éprouvettes soient aussi droites que possible; cependant, ce n'est pas toujours le cas, c'est pourquoi il faut s'assurer que la mesure est effectuée sur des éprouvettes en l'état de livraison. Toutes les mesures sont effectuées sans appliquer de champ magnétique. La méthode décrite dans le corps de texte de la présente norme est la méthode de 'référence' et des méthodes d'acquisition facultatives sont présentées à l'Article A.3. Cette deuxième édition annule et remplace la première édition parue en 2003, dont elle constitue une révision technique. Les principales révisions sont l'ajout de deux nouvelles annexes, 'Considérations relatives à l'incertitude' (Annexe B) et 'Evaluation de l'incertitude de la méthode d'essai de RRR de Nb3Sn' (Annexe C).

Superprevodnost - 11. del: Meritve razmerja preostale upornosti - Preostala upornost za superprevodnike iz kompozita Nb3Sn

Ta del IEC 61788 zajema preskusno metodo za določevanje razmerja preostale upornosti (RRR) za superprevodnike iz kompozita Nb3Sn. Ta metoda je namenjena uporabi z vzorci superprevodnikov, ki imajo monolitno strukturo s pravokotnim ali okroglim prečnim prerezom, RRR manj kot 350 in prerezom manj kot 3 mm2 ter so bili reakcijsko toplotno obdelani. V idealnem primeru naj bi bili vzorci čim bolj ravni, ker pa ni vedno tako, je treba paziti, da se vzorec izmeri v dobljenem stanju. Vse meritve se izvajajo brez vnesenega magnetnega polja. Metoda, opisana v glavnem delu tega standarda, je »referenčna« metoda, izbirne metode so navedene v točki A.3.

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Standards Content (Sample)

SIST EN 61788-11:2011
Superprevodnost - 11. del: Meritve razmerja preostale upornosti - Preostala
upornost za superprevodnike iz kompozita Nb3Sn
Superconductivity - Part 11: Residual resistance ratio measurment - Residual resistance
ratio of Nb3Sn composite superconductors
Supraconductivité - Partie 11: Mesures de résistance résiduelle - Rapport de résistance
résiduelle des supraconducteurs composites de Nb3Sn
Ta slovenski standard je istoveten z: EN 61788-11:2011
17.220.20 0HUMHQMHHOHNWULþQLKLQ Measurement of electrical
PDJQHWQLKYHOLþLQ and magnetic quantities
29.050 Superprevodnost in prevodni Superconductivity and
materiali conducting materials
SIST EN 61788-11:2011 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 61788-11:2011

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SIST EN 61788-11:2011

EN 61788-11

August 2011

ICS 17.220; 29.050 Supersedes EN 61788-11:2003

English version

Superconductivity -
Part 11: Residual resistance ratio measurement -
Residual resistance ratio of Nb Sn composite superconductors
(IEC 61788-11:2011)

Supraconductivité -  Supraleitfähigkeit -
Partie 11: Mesure du rapport de Teil 11: Messung des
résistance résiduelle - Restwiderstandsverhältnisses -
Rapport de résistance résiduelle des Restwiderstandsverhältnis von Nb Sn-
supraconducteurs composites de Nb Sn Verbundsupraleitern
(CEI 61788-11:2011) (IEC 61788-11:2011)

This European Standard was approved by CENELEC on 2011-08-15. 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, Bulgaria, Croatia, Cyprus,
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Spain, Sweden, Switzerland and the United Kingdom.

European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung

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© 2011 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 61788-11:2011 E

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SIST EN 61788-11:2011
EN 61788-11:2011 - 2 -
The text of document 90/268/FDIS, future edition 2 of IEC 61788-11, prepared by IEC TC 90,
Superconductivity was submitted to the IEC-CENELEC parallel vote and approved by CENELEC as
EN 61788-11:2011.
The following dates are fixed:
(dop) 2012-05-15
• latest date by which the document has
to be implemented at national level by
publication of an identical national
standard or by endorsement
• latest date by which the national (dow) 2014-08-15
standards conflicting with the
document have to be withdrawn

This document supersedes EN 61788-11:2003.
The main revisions are the addition of two new annexes "Uncertainty considerations" (Annex B) and
"Uncertainty evaluation in test method of RRR for Nb Sn" (Annex C).

Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC [and/or CEN] shall not be held responsible for identifying any or all such patent

Endorsement notice
The text of the International Standard IEC 61788-11:2011 was approved by CENELEC as a European
Standard without any modification.

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SIST EN 61788-11:2011
- 3 - EN 61788-11:2011
Annex ZA

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

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