数字通信用多芯对称对绞/四芯电缆.第8部分:传输特性达1200MHz的对称对绞电缆.工作区布线.分规范

[中文适用范围]： 本部分IEC61156与IEC61156-1和IEC61156-7相关。本文描述的电缆指定最高12oo MHz，专为构建工作区线缆而设计。 它涵盖了一种具有四个单独屏蔽（S/FTP）对的电缆。电缆可以在电缆芯上提供公共屏蔽。 传输特性指定为最高频率1 2oo MHz，温度为20°C。 本部分规范所涵盖的电缆旨在用于通信系统中通常遇到的电压和电流，并支持提供直流低电压远程供电应用。这些电缆不适用于与低阻抗源一起使用，例如公共事业电源的电力供应。 [外文原描述]： IEC 61156-8:2023 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 61156-8:2023 relates to IEC 61156-1 and IEC 61156-7. The cables described herein are specified up to 1 200 MHz and are specifically designed to build work area cords. It covers a cable having four individually screened (S/FTP) pairs. The cable can be provided with a common screen over the cable core. The cables covered by this sectional specification are intended to operate with voltages and currents normally encountered in communication systems and support the delivery of DC low voltage remote powering applications. These cables are not intended to be used in conjunction with low impedance sources, for example the electric power supply of public utility mains. This second edition cancels and replaces the first edition published in 2009, and Amendment 1:2013. This edition includes the following significant technical changes with respect to the previous edition: a. align clauses with IEC 61156-1:2023; b. additional reference to IEC 62153-4-9 test method (triaxial) for coupling attenuation measurement to be consistent with all other parts of the IEC 61156 series; c. incorporation of blank detail specification.