光缆.第1-20部分:总规范.基本光缆试验规程.总则

[中文适用范围]： IEC 60794-1 的这一部分适用于与采用类似技术的电信设备和装置一起使用的光纤电缆，以及具有光纤和电导体组合的电缆。本文档的主要目标是向最终用户提供有关 IEC 60794-1 系列编号 -2X 不同部分内容的概述。这些文件定义了用于建立光纤电缆的几何、传输、材料、机械、老化（环境暴露）和气候特性的统一要求以及适当的电气要求的测试程序。在整个文件中，“光缆”一词还可以包括光纤单元、微管光纤单元等。本文件的次要目标是在测试光缆时为最终用户提供有用的指导。 [外文原描述]： IEC 60794-1-2: 2017 applies to optical fibre cables for use with telecommunications equipment and devices employing similar techniques, and to cables having a combination of both optical fibres and electrical conductors. The prime objective of this document is to provide the end user with an overview about the content of different parts of the IEC 60794-1 series numbered -2X. Table 1 shows the different parts. Table 1 – Document overview Test methods IEC reference General guidance IEC 60794-1-2 Methods E – Mechanical IEC 60794-1-21 Methods F – Environmental IEC 60794-1-22 Methods G – Cable elements IEC 60794-1-23 Methods H – Electrical IEC 60794-1-24 NOTE Several numbers in the test method numbering sequence are missing. The reasons for these omissions are historical. To avoid confusion, the existing numbering sequence has been retained. These documents define test procedures to be used in establishing uniform requirements for the geometrical, transmission, material, mechanical, ageing (environmental exposure) and climatic properties of optical fibre cables, and electrical requirements where appropriate. Throughout the documents, the wording "optical cable" can also include optical fibre units, microduct fibre units, etc. The secondary objective of this document is to provide the end user with useful guidance when testing optical fibre cables. This fourth edition cancels and replaces the third edition published in 2013 and IEC 60794­-1­-20 published in 2014. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition and to IEC 60794-1-20: - the multiple cross-reference tables have been deleted and replaced with a higher level one related to the generic standards; - all pertinent text from IEC 60794-1-20 has been included; - standard optical test wavelengths have been introduced; - this document has been streamlined by cross-referencing IEC 60794-1-1; - the "No change in attenuation" definitions contained in IEC 60794-1-20 have been transferred to IEC 60794-1-1; - the title has been modified to reflect the contents of the new edition. This publication is to be read in conjunction with IEC 60794-1-1:2015 .