电视信号、声音信号和交互服务用电缆网络.第11部分:安全

[中文适用范围]： 本部分IEC 60728涉及适用于固定站点系统和设备的安全要求。在适用的情况下，它也适用于移动和临时安装的系统，例如大篷车。 可能适用的附加要求，例如参考： • 建筑物和架空线路的电气安装， • 其他电信服务分配系统， • 水分配系统， • 气体分配系统， • 闪电系统。 本文档旨在为系统安全、工作人员、用户和用户设备提供具体要求。它仅涉及安全方面，并不旨在定义用于系统中设备保护的标准。 [外文原描述]： IEC 60728-11:2023 deals with the safety requirements applicable to fixed sited systems and equipment. As far as applicable, it is also valid for mobile and temporarily installed systems, for example, caravans. Additional requirements may be applied, for example, referring to: - electrical installations of buildings and overhead lines, - other telecommunication services distribution systems, - water distribution systems, - gas distribution systems, - lightning systems. This document is intended to provide requirements specifically for the safety of the system, personnel working on it, subscribers and subscriber equipment. It deals only with safety aspects and is not intended to define a standard for the protection of the equipment used in the system. IEC 60728-11:2023 cancels and replaces the fourth edition published in 2016. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition. a) Replacement of references to IEC 60065 and IEC 60950-1 with references to IEC 62368-1. b) Addition of subclauses 4.4 to 4.6. c) Revised definition of class I equipment, class II equipment, main earthing terminal, see 3.1.6, 3.1.8 and 3.1.31. d) Addition of definitions for harm, hazard, ordinary person, instructed person, skilled person, see 3.1.22, 3.1.23, 3.1.39, 3.1.40 and 3.1.41. e) Additional requirement to provide details on the equipment installed, see 4.1. f) Additional mechanical, design and construction requirements, see 4.2.2. g) Changes to the accessible part requirements, see 4.2.3. h) The current carrying capacity and dielectric strength of components is now obligatory, see 8.1.3. i) The assessment of the risk of lightning strike is now obligatory, see Figure 10. j) Extension of remote feeding voltage on subscriber feeder, see Table 1.