International Standards and Conformity Assessment for all electrical, electronic and related technologies



Reference EN 61788-11:2003
Title Superconductivity - Part 11: Residual resistance ratio measurement - Residual resistance ratio of Nb3Sn composite superconductors
Project Number 14550
Abstract/Scope Covers a test method for the determination of the residual resistance ratio (RRR) of Nb3Sn composite conductors. This method is intended for use with superconductor specimens that have a monolithic structure with a 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 are 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; optional acquisition methods are outlined in Annex A.


Current Stage code 6060
Current Stage code date 2003-04-11
Current Stage code deadline 2003-12-01
Deadline date for vote  


Order Voucher  


IEC Technical Body IEC/TC 90
Reference Document IEC 61788-11:2003 (EQV)
ICS 17.220 - Electricity. Magnetism. Electrical and magnetic measurements
29.050 - Conducting materials
Keywords Superconductor; Residual resistance ratio; Nb3Sn composite
Note Superseded by EN 61788-11:2003
Special National Condition(s)  


Categories - Aspects
Product Life Cycle


Deadline Date
6060 2003-04-11 2003-12-01 export to doc file  EN
5099 2003-03-01 2003-07-01  
5061 2003-01-27 2003-03-01  
5020 2002-10-11 2002-12-13  
4099 2002-10-08 2002-10-11  
4020 2001-06-29 2001-11-30  
3099 2001-06-26 2001-06-29  

Implementation Dates

date of Ratification (DOR) (1) 2003-03-01
date of Availability (DAV) (2) 2003-04-11
date of Announcement (DOA) (3) 2003-06-01
date of Publication (DOP) (4) 2003-12-01
date of Withdrawal (DOW) (5) 2006-03-01


Superseded by EN 61788-11:2011
Normative reference (6) IEC 60050-815:2000

(1) Date of ratification (dor) date when the Technical Board notes the approval of an EN (and HD for CENELEC), from which time the standard may be said to be approved

(2) Date of availability (dav) date when the definitive text in the official language versions of an approved CEN/CENELEC publication is distributed by the Central Secretariat

(3) Date of announcement (doa) latest date by which the existence of an EN (and HD for CENELEC), a TS or a CWA has to be announced at national level

(4) Date of publication (dop) latest date by which an EN has to be implemented at national level by publication of an identical national standard or by endorsement

(5) Date of withdrawal (dow) latest date by which national standards conflicting with an EN (and HD for CENELEC) have to be withdrawn

(6) This list of normative references is purely indicative. The only official list of normative reference is the list of the published standard.