Superconductivity - Part 4: Residual resistance ratio measurement - Residual resistance ratio of Nb-Ti composite superconductors

Describes a reference method for the determination of the residual resistance ratio (RRR) of a composite superconductor comprised of Nb-Ti filaments and Cu, Cu-Ni or Cu/Cu-Ni matrix. This method is intended for use with superconductors that have a rectangular or round cross-section, RRR less than 350, and cross-sectional area less than 3 mm2. All measurements shall be done without an applied magnetic field. Optional acquisition methods are outlined in annex A.

Supraleitfähigkeit - Teil 4: Messungen des Restwiderstandsverhältnisses - Restwiderstandsverhältnis von Nb-Ti-Verbundsupraleitern

Supraconductivité - Partie 4: Mesure de la résistivité résiduelle - Taux de résistivité résiduelle des supraconducteurs composites au Nb-Ti

Superprevodnost - 4. del: Meritve razmerja preostale upornosti - Preostala upornost za superprevodnike iz kompozita Nb-Ti (IEC 61788-4:2007)

General Information

Status
Withdrawn
Publication Date
26-Jul-2007
Withdrawal Date
30-Jun-2010
Technical Committee
Drafting Committee
Parallel Committee
Current Stage
9960 - Withdrawal effective - Withdrawal
Start Date
15-Aug-2014
Completion Date
15-Aug-2014

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Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN 61788-4:2008
01-januar-2008
1DGRPHãþD
SIST EN 61788-4:2002
Superprevodnost - 4. del: Meritve razmerja preostale upornosti - Preostala
upornost za superprevodnike iz kompozita Nb-Ti (IEC 61788-4:2007)
Superconductivity - Part 4: Residual resistance ratio measurement - Residual resistance
ratio of Nb-Ti composite superconductors
Supraleitfähigkeit - Teil 4: Messungen des Restwiderstandsverhältnisses –
Restwiderstandsverhältnis von Nb-Ti-Verbundsupraleitern
Supraconductivité - Partie 4: Mesure de la résistivité résiduelle - Taux de résistivité
résiduelle des supraconducteurs composites au Nb-Ti
Ta slovenski standard je istoveten z: EN 61788-4:2007
ICS:
17.220.20 0HUMHQMHHOHNWULþQLKLQ Measurement of electrical
PDJQHWQLKYHOLþLQ and magnetic quantities
29.050 Superprevodnost in prevodni Superconductivity and
materiali conducting materials
SIST EN 61788-4:2008 en,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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EUROPEAN STANDARD
EN 61788-4

NORME EUROPÉENNE
July 2007
EUROPÄISCHE NORM

ICS 17.220.20; 29.050 Supersedes EN 61788-4:2001


English version


Superconductivity -
Part 4: Residual resistance ratio measurement -
Residual resistance ratio of Nb-Ti composite superconductors
(IEC 61788-4:2007)


Supraconductivité -  Supraleitfähigkeit -
Partie 4: Mesure Teil 4: Messungen
de la résistivité résiduelle - des Restwiderstandsverhältnisses –
Taux de résistivité résiduelle Restwiderstandsverhältnis
des supraconducteurs composites von Nb-Ti-Verbundsupraleitern
au Nb-Ti (IEC 61788-4:2007)
(CEI 61788-4:2007)




This European Standard was approved by CENELEC on 2007-07-01. 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, Bulgaria, 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


© 2007 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 61788-4:2007 E

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EN 61788-4:2007 - 2 -
Foreword
The text of document 90/203/FDIS, future edition 2 of IEC 61788-4, prepared by IEC TC 90,
Superconductivity, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as
EN 61788-4 on 2007-07-01.
This European Standard supersedes EN 61788-4:2001.
The main revisions are the replacement of "accuracy" by "uncertainty" and a change in Figure 1, where
the relationship between temperature and voltage is changed to the relationship between temperature
and resistance.
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) 2008-04-01
– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2010-07-01
Annex ZA has been added by CENELEC.
__________
Endorsement notice
The text of the International Standard IEC 61788-4:2007 was approved by CENELEC as a European
Standard without any modification.
__________

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- 3 - EN 61788-4:2007

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
1)
IEC 60050-815 - International Electrotech
...

SLOVENSKI oSIST prEN 61788-4:2005

PREDSTANDARD
junij 2005
Superprevodnost – 4. del: Meritve razmerja preostale upornosti – Preostala
upornost za superprevodnike iz kompozita Nb-Ti
Superconductivity – Part 4: Residual resistance ratio measurement – Residual
resistance ratio of Nb-Ti composite superconductors
ICS 17.220.20; 29.050 Referenčna številka
oSIST prEN 61788-4:2005(en)
©  Standard je založil in izdal Slovenski inštitut za standardizacijo. Razmnoževanje ali kopiranje celote ali delov tega dokumenta ni dovoljeno

---------------------- Page: 1 ----------------------
90/168/CDV
COMMITTEE DRAFT FOR VOTE (CDV)
PROJET DE COMITÉ POUR VOTE (CDV)

Project number IEC 61788-4 Ed.2
Numéro de projet
IEC/TC or SC: Date of circulation Closing date for voting (Voting
90
Date de diffusion mandatory for P-members)
CEI/CE ou SC:

Date de clôture du vote (Vote
2005-03-11
obligatoire pour les membres (P))
2005-08-12
Titre du CE/SC: Supraconductivité TC/SC Title: Superconductivity
Secretary: Ken-ichi Sato
Secrétaire:
Also of interest to the following committees Supersedes document
Intéresse également les comités suivants Remplace le document
   90/151/CD-90/164/CC
Functions concerned
Fonctions concernées
Safety EMC Environment Quality assurance
Sécurité
CEM Environnement Assurance qualité
CE DOCUMENT EST TOUJOURS À L'ÉTUDE ET SUSCEPTIBLE DE THIS DOCUMENT IS STILL UNDER STUDY AND SUBJECT TO CHANGE. IT
MODIFICATION. IL NE PEUT SERVIR DE RÉFÉRENCE. SHOULD NOT BE USED FOR REFERENCE PURPOSES.
LES RÉCIPIENDAIRES DU PRÉSENT DOCUMENT SONT INVITÉS À RECIPIENTS OF THIS DOCUMENT ARE INVITED TO SUBMIT, WITH THEIR
PRÉSENTER, AVEC LEURS OBSERVATIONS, LA NOTIFICATION DES COMMENTS, NOTIFICATION OF ANY RELEVANT PATENT RIGHTS OF
DROITS DE PROPRIÉTÉ DONT ILS AURAIENT ÉVENTUELLEMENT WHICH THEY ARE AWARE AND TO PROVIDE SUPPORTING
CONNAISSANCE ET À FOURNIR UNE DOCUMENTATION EXPLICATIVE. DOCUMENTATION.



Titre :    Title : IEC 61788-4 Ed.2: Superconductivity -
Residual resistance ratio measurement –

Residual resistance ratio of Nb-Ti composite
superconductors



Note d'introduction Introductory note
At TC90 meeting in Argonne on September 3,

2004, it was agreed to proceed to CDV of Ed.2 of
61788-4.



ATTENTION ATTENTION

CDV soumis en parallèle au vote (CEI) Parallel IEC CDV/CENELEC Enquiry
et à l’enquête (CENELEC)


Copyright © 2005 International Electrotechnical Commission, IEC. All rights reserved. It is
permitted to download this electronic file, to make a copy and to print out the content for the sole
purpose of preparing National Committee positions. You may not copy or "mirror" the file or
printed version of the document, or any part of it, for any other purpose without permission in
writing from IEC.
FORM CDV (IEC)
2002-08-09

---------------------- Page: 2 ----------------------
– 2 – 61788-4 Ed.2/CDV © IEC(E)
CONTENTS
FOREWORD.3
INTRODUCTION.4

1 Scope.5
2 Normative references.5
3 Terms and definition . 5
4 Requirements.6
5 Apparatus.6
5.1 Material of measuring mandrel or of measuring base plate .6
5.2 Diameter of the measuring mandrel and length of the measuring base plate .6
5.3 Cryostat for the resistance, R , measurement .6
2
6 Specimen preparation.6
7 Data acquisition.7
7.1 Resistance (R ) at room temperature.7
1
7.2 Resistance (R *) just above the superconducting transition .7
2
7.3 Correction on measured R * for bending strain .9
2
7.4 Residual resistance ratio (RRR) .9
8 Accuracy and stability in the test method.9
8.1 Temperature.
...

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