数字通信用对绞或星绞多芯对称电缆.第4部分:引上电缆.分规范

[中文适用范围]： 本部分规范涉及 IEC 61156-1。这些电缆专门用于 ISO/IEC 11801 中定义的水平地板布线。它涵盖用于垂直竖井或垂直楼层之间的单独非屏蔽 20 对/10 个四线组或更多。当垂直安装时，额外长度要求可能适用，并在适当的规范中定义。电缆可以在电缆芯上设置有公共屏蔽。这些电缆适用于各种通信系统，在相应的详细规范中给出了参考。本部分规范涵盖的电缆旨在以通信系统通常采用的电压和电流运行。这些电缆不应连接到低阻抗电源，例如公共电源。安装和运行时推荐的温度范围可在详细规范中注明。 [外文原描述]： Covers individually unscreened 20 pairs/10 quads or more for vertical shafts or vertically between floors. When installed vertically extra length requirements may be applicable and are defined in the appropriate specifications. The cables may be provided with a common screen over the cable core. These cables are suitable for the various communication systems for which the reference is given in the appropriate detail specification.