Supravodivost - Část 4: Měření zbytkového odporu - Poměr zbytkového odporu kompozitních supravodičů Nb-Ti a Nb3Sn (Norma k přímému použití jako ČSN).

The information about the standard:

Designation standards: ČSN EN IEC 61788-4-ed.5
Classification mark: 345685
Catalog number: 510535
Publication date standards: 1.10.2020
The number of pages: 44
Approximate weight : 132 g (0.29 lbs)
Country: Czech technical standard
Kategorie: Technické normy ČSN

Annotation of standard text ČSN EN IEC 61788-4-ed.5 (345685):

This part of IEC 61788 specifies a test method for the determination of the residual resistance ratio (RRR) of Nb-Ti and Nb3Sn composite superconductors with Cu, Cu-Ni, Cu/Cu-Ni and Al matrix. This method is intended for use with superconductor specimens that have a monolithic structure with rectangular or round cross-section, RRR value less than 350, and cross-sectional area less than 3 mm2. In the case of Nb3Sn, the specimens have received a reaction heat-treatment