金属电缆和其他无源元件.试验方法.第4-8部分:电磁兼容性（EMC）.电容耦合导纳

[中文适用范围]： 本部分IEC 62153规定了一种测试方法，用于通过三轴装置确定电容耦合导纳、电容耦合阻抗和耦合电容，其方式类似于测量转移阻抗（见IEC 62153-4-3）。大多数电缆的电容耦合可以忽略不计；然而，对于具有松散单编织层的电缆，应通过测量电容耦合导纳来确定通过屏蔽层孔洞的耦合。 [外文原描述]： IEC 62153-4-8:2018 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 62153-4-8:2018 specifies a test method for determining the capacitive coupling admittance, the capacitive coupling impedance and the coupling capacitance by the use of a triaxial set-up in a similar manner as for the measurement of the transfer impedance (see IEC 62153-4-3). Most cables have negligible capacitive coupling; however, in the case of cables with loose single-braids, the coupling through the holes in the screen shall be determined by the measurement of the capacitive coupling admittance. This second edition cancels and replaces the first edition published in 2006. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: a) use of the triaxial set-up in a similar manner as for the measurement of the transfer impedance (see IEC 62153-4-3), b) use of vector network analyser instead of capacitance bridge or pulse generator.