標準號：BS EN 61788-2-2007
中文標準名稱：超導性.臨界電流測量.Nb3Sn復合超導體的直流(D.C.)臨界電流
英文標準名稱：Superconductivity - Critical current measurement - D.C. critical current of Nb3Sn composite superconductors
標準類型：K04
發布日期：2007/2/28 12:00:00
實施日期：2007/2/28 12:00:00
中國標準分類號：K04
國際標準分類號：29.050
引用標準：IEC 60050-815-2000
適用范圍：This part of IEC 61788 covers a test method for the determination of the d.c. critical current of Nb3Sn composite superconductors which are fabricated by either the bronze process or the internal tin diffusion process and have a copper/non-copper ratio larger than 0,2.This method is intended for use with superconductors which have critical currents of less than 1 000 A and n-values larger than 12 under standard test conditions and at magnetic fields of less than or equal to 0,7 times the upper critical magnetic field. The test specimen is immersed in a liquid helium bath at a known temperature during testing. The Nb