SIST EN 61788-1:2008

Oznaka standarda: SIST EN 61788-1:2008
Koda projekta: 16902
Organizacija: SIST
Naslov (angleški): Superconductivity -- Part 1: Critical current measurement - DC critical current of Nb-Ti composite superconductors
Naslov (slovenski): Superprevodnost - 1. del: Meritve kritičnega toka - Enosmerni kritični tok pri superprevodnikih iz Nb-Ti kompozita (IEC 61788-1:2006)
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Ime Jezik Status Cena Dodaj v košarico
SIST EN 61788-1:2008 angleški jezik Active SIST-G: 72.60 EUR
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Tehnični odbor: I09 - Imaginarni 09
ICS: 17.220.20 29.050
Status: Objavljen
Objavljen: 01-jan-2008
Refer. št. objave: Sporocila 2008-01
Referenčna oznaka: EN 61788-1:2007
Področje projekta (angleško): This part of IEC 61788 covers a test method for the determination of the d.c. critical current of either Cu/Nb-Ti composite superconductors that have a copper/superconductor ratio larger than 1 or Cu/Cu-Ni/Nb-Ti wires that have a copper/superconductor ratio larger than 0,9 and a copper alloy (Cu-Ni)/superconductor ratio larger than 0,2, where the diameter of Nb-Ti superconducting filaments is larger than 1 m. The changes for the Cu/Cu-Ni/Nb-Ti are described in Annex C. The Cu-Ni uses all of the main part of the standard with the exceptions listed in Annex C that replace (and in some cases are counter to) some of the steps in the main text. This method is intended for use with superconductors that have critical currents less than 1 000 A and n-values larger than 12, under standard test conditions and at magnetic fields less than or equal to 0,7 of the upper critical magnetic field. The test specimen is immersed in a liquid helium bath at a known temperature during testing. The test conductor has a monolithic structure with a round or rectangular cross-sectional area that is less than 2 mm2. The specimen geometry used in this test method is an inductively coiled specimen. Deviations from this test method that are allowed for routine tests and other specific restrictions are given in this standard. Test conductors with critical currents above 1 000 A or cross-sectional areas greater than 2 mm2 could be measured with the present method with an anticipated increase in uncertainty and a more significant self-field effect (see Annex B). Other, more specialized, specimen test geometries may be more appropriate for larger conductor testing which have been omitted from this present standard for simplicity and to retain a lower uncertainty. The test method given in this standard is expected to apply to other superconducting composite wires after some appropriate modifications.
Povezava na standarde
Povezava Ime Datum
Nadomešča SIST EN 61788-1:2001 - Superconductivity - Part 1: Critical current measurement - DC critical current of Cu/Nb-Ti composite superconductors 01-dec-2009
Nadomešča SIST EN 61788-1:2001 - Superconductivity - Part 1: Critical current measurement - DC critical current of Cu/Nb-Ti composite superconductors 06-maj-2014


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