CENELEC
Project
| Reference | EN 61788-4:2007 |
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| Title | Superconductivity - Part 4: Residual resistance ratio measurement - Residual resistance ratio of Nb-Ti composite superconductors |
| Project Number | 16780 |
| Abstract/Scope | 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. |
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Published
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Status
| Current Stage code | 6060 |
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| Current Stage code date | 2007-07-27 |
| Current Stage code deadline | 2008-04-01 |
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Details
| IEC Technical Body | IEC/TC 90 |
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| Reference Document | IEC 61788-4:2007 (EQV) |
| ICS | 17.220.20 - Measurement of electrical and magnetic quantities 29.050 - Conducting materials |
| Keywords | Superconductivity; Superconductor; Residual resistance ratio; Nb-Ti composite |
| Note | Superseded by EN 61788-4:2011 |
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History
Implementation Dates
| date of Ratification (DOR) (1) | 2007-07-01 |
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| date of Availability (DAV) (2) | 2007-07-27 |
| date of Announcement (DOA) (3) | 2007-10-01 |
| date of Publication (DOP) (4) | 2008-04-01 |
| date of Withdrawal (DOW) (5) | 2010-07-01 |
Relations
| Supersedes | EN 61788-4:2001 |
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| Superseded by | EN 61788-4:2011 |
| 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.
