IEC 61788-8:20 10规定了在暴露于横向交变磁场的复合超导导线中通过拾取线圈法测量总交流损耗的方法。损耗可以包含磁滞、耦合和涡流损耗。IEC 61788-13规定了仅测量直流或低扫频磁场中磁滞损耗的标准方法。在预期主要用于脉冲线圈和AC线圈应用的金属和氧化物圆形超导线中，通过施加时变磁场和/或电流而产生AC损耗。在线圈应用的通常电磁配置中，磁场对AC损耗的贡献是主要的。对于暴露于横向交变磁场的超导导线，本方法通常可用于在液氦温度下测量高达商业水平50/60Hz的宽频率范围内的总AC损耗。对于细丝超导导线，用本方法测量的交流损耗可以分为单个细丝中的磁滞损耗、细丝之间的耦合损耗和正常导电部分中的涡流损耗。在导线不具有厚的外部正常导电护套的情况下，主要成分是磁滞损耗和耦合损耗，通过将前者估计为低频区域中每周期到零频率的AC损耗的外推水平，其中每周期的耦合损耗与频率成比例。这第二版取消并取代了2003年出版的第一版。本版构成技术修订版。与上一版相比的主要变化如下:-将拾取线圈方法的应用扩展到AC。液氦温度下圆形截面金属和氧化物超导导线的损耗测量， -将“不确定性”一词用于所有定量（与数字相关）统计表达，并取消“精密度”和“准确度”的定量使用。 关键词:超导，TC90

IEC 61788-8:2010 specifies the measurement method of total AC losses by the pickup coil method in composite superconducting wires exposed to a transverse alternating magnetic field. The losses may contain hysteresis, coupling and eddy current losses. The standard method to measure only the hysteresis loss in DC or low-sweep-rate magnetic field is specified in IEC 61788-13. In metallic and oxide round superconducting wires expected to be mainly used for pulsed coil and AC coil applications, AC loss is generated by the application of time-varying magnetic field and/or current. The contribution of the magnetic field to the AC loss is predominant in usual electromagnetic configurations of the coil applications. For the superconducting wires exposed to a transverse alternating magnetic field, the present method can be generally used in measurements of the total AC loss in a wide range of frequency up to the commercial level, 50/60 Hz, at liquid helium temperature. For the superconducting wires with fine filaments, the AC loss measured with the present method can be divided into the hysteresis loss in the individual filaments, the coupling loss among the filaments and the eddy current loss in the normal conducting parts. In cases where the wires do not have a thick outer normal conducting sheath, the main components are the hysteresis loss and the coupling loss by estimating the former part as an extrapolated level of the AC loss per cycle to zero frequency in the region of lower frequency, where the coupling loss per cycle is proportional to the frequency. This second edition cancels and replaces the first edition published in 2003. This edition constitutes a technical revision. The main changes with respect to the previous edition are listed below:
- extending the applications of the pickup coil method to the a.c. loss measurements in metallic and oxide superconducting wires with a round cross section at liquid helium temperature,
- using the word "uncertainty" for all quantitative (associated with a number) statistical expressions and eliminating the quantitative use of "precision" and "accuracy". Key words: superconductivity, TC90