IEC 61788-4-ed.5.0-RLV

Superconductivity - Part 4: Residual resistance ratio measurement - Residual resistance ratio of Nb-Ti and Nb3Sn composite superconductors

NORMA vydaná dňa 20.3.2020

Jazyk
Prevedenie	Elektronické PDF - 544.20 € Tlačené - 544.20 € CD-ROM - 545.80 €
Dostupnosť	SKLADOM
Cena	544.20 € bez DPH
544.20 €

Informácie o norme:

Označenie normy: IEC 61788-4-ed.5.0-RLV
Dátum vydania normy: 20.3.2020
Kód tovaru: NS-1095756
Počet strán: 103
Približná hmotnosť: 340 g (0.75 libier)
Krajina: Medzinárodná technická norma
Kategória: Technické normy IEC

Tlač

Odoslať známemu

Otázka

Kategórie - podobné normy:

Měření elektrických a magnetických veličin
Vodivé materiály

Anotácia textu normy IEC 61788-4-ed.5.0-RLV :

IEC 61788-4:2020 RLV contains both the official IEC International Standard and its Redline version. The Redline version is available in English only and provides you with a quick and easy way to compare all the changes between the official IEC Standard and its previous edition. IEC 61788-4:2020 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 in a strain-free condition and zero external magnetic field. 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. This fifth edition cancels and replaces the fourth edition published in 2016. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: a) change in the suitable distance of voltage taps on the specimen for reliable measurement, b) new report on the result of the round robin test of the residual resistance ratio of Nb3Sn superconductors that proves the validity of the measurement method in this standard, c) revision of the confusing definitions of the copper ratio and copper fraction.