IEC 61788的本部分规定了通过使用三次谐波电压的感应法测量大面积高温超导（HTS）薄膜中的局部临界电流密度（Jc）及其分布。精确测量最重要的考虑因素是通过电场判据确定液氮温度，并从其频率依赖性中获得电流-电压特性。虽然可以测量外加直流磁场[20][21]，但本文件的范围仅限于无直流磁场的测量。购买本文件时可获得的所有当前修订均包含在购买本文件中。

This part of IEC 61788 specifies the measurements of the local critical current density (Jc) and its distribution in large-area high-temperature superconducting (HTS) films by an inductive method using third-harmonic voltages. The most important consideration for precise measurements is to determineJcat liquid nitrogen temperatures by an electric-field criterion and obtain current-voltage characteristics from its frequency dependence. Although it is possible to measureJcin applied DC magnetic fields [20] [21], the scope of this document is limited to the measurement without DC magnetic fields.All current amendments available at time of purchase are included with the purchase of this document.