This part of IEC 61788 covers a test 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 monolithic structure with rectangular or round cross-section, RRR less than 350, and cross-sectional area less than 3 mm2. All measurements are done without an applied magnetic field. The method described in the body of this standard is the “reference” method and optional acquisition methods are outlined in Clause A.4.
BS EN 61788-4-2007由英国标准学会 GB-BSI 发布于 2007-09-28,并于 2007-09-28 实施,于 2011-09-30 废止。
BS EN 61788-4-2007 在中国标准分类中归属于: K10 电工材料和通用零件综合,在国际标准分类中归属于: 29.050 导体材料。
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