BS EN 61788-4:2007

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Superconductivity – Residual resistance ratio measurement. Residual resistance ratio of Nb-Ti composite superconductors

Published By	Publication Date	Number of Pages
BSI	2007	28

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Description

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. This second edition cancels and replaces the first edition published in 2001. It constitutes a technical revision. The main revisions are the replacement of “accuracy” by “uncertainty” and a change in Figure 1, where the relationship between temperature and voltage is changed to the relationship between temperature and resistance.

Additional information

Status	Withdrawn
Title	Superconductivity – Residual resistance ratio measurement. Residual resistance ratio of Nb-Ti composite superconductors
Replaces	BS EN 61788-4:2001
Publisher	BSI
Committee	W/-
Pages	28
Publication Date	2007-09-28
Withdrawn Date	2011-09-30
Replaced By	BS EN 61788-4:2011
ISBN	978 0 580 55210 6
Standard Number	BS EN 61788-4:2007
Identical National Standard Of	IEC 61788-4:2007, EN 61788-4:2007
Descriptors	Electric wires, Resistance measurement, Niobium, Electric conductors, Electrical conductivity, Superconductors, Electric current, Superconductivity, Titanium
ICS Codes	29.050 - Superconductivity and conducting materials

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BS EN 61788-4:2007

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