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Reference EN 61788-12:2002
Title Superconductivity - Part 12: Matrix to superconductor volume ratio measurement - Copper to non-copper volume ratio of Nb3Sn composite superconducting wires
Project Number 14493
Abstract/Scope Describes the test method for determining the copper to non-copper volume ratio of Cu/Nb3Sn wires. The test method given hereunder is applicable to Nb3Sn composite superconducting wires with a cross-sectional area of 0,1 mm2 to 3 mm2 and a copper to non-copper volume ratio of 0,1 or more. It does not make any reference to the filament diameter; however, it is not applicable to those superconducting wires with their filament, Sn, CuSn, barrier material and other non-copper portions dispersed in the copper matrix or those with the stabilizer dispersed. Furthermore, the copper to non-copper volume ratio can be determined on specimens before or after the Nb3Sn formation heat treatment process. This test method may be applied to other composite superconducting wires after some appropriate modifications.


Current Stage code 6060
Current Stage code date 2002-10-29
Current Stage code deadline 2003-07-01
Deadline date for vote  


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IEC Technical Body IEC/TC 90
Reference Document IEC 61788-12:2002 (EQV)
ICS 29.050 - Conducting materials
Keywords Superconductor; Matrix; Volume ratio measurement; Nb3Sn composite; Wire
Note Superseded by EN 61788-12:2013
Special National Condition(s)  


Categories - Aspects
Product Life Cycle


Deadline Date
6060 2002-10-29 2003-07-01 export to doc file  EN
5099 2002-10-01 2003-02-01  
5061 2002-08-27 2002-10-01  
5020 2002-03-29 2002-05-31  
4099 2002-03-26 2002-03-29  
4020 2001-05-11 2001-10-12  
3099 2001-05-08 2001-05-11  

Implementation Dates

date of Ratification (DOR) (1) 2002-10-01
date of Availability (DAV) (2) 2002-10-29
date of Announcement (DOA) (3) 2003-01-01
date of Publication (DOP) (4) 2003-07-01
date of Withdrawal (DOW) (5) 2005-10-01


Superseded by EN 61788-12:2013
Normative reference (6) IEC 60050-815:2000
EN 61788-5:2001

(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.