IEC/TS 61000-5-8:2009（E）提供了如何保护分布式基础设施（电力、电信、运输和管道网络等）免受高空电磁脉冲（HEMP）威胁的指南。为了实现这一目标，有必要描述HEMP对连接和分布在自然界中的电气/电子系统的特殊威胁。特别是，典型高度为100公里的核爆炸将照亮地球，照射范围从爆炸正下方到1100公里。这意味着任何分布式和连接的基础设施，如电力或电信，都将在大范围内同时观测到干扰。作为分布式网络一部分的设施的EMC或HEMP保护通常不考虑这种情况，因为本地干扰的影响通常仅在本地进行评估。 IEC/TS 61000-5-8:2009提供了有关所有类型分布式基础设施的干扰级别和保护方法的一般信息。由于分布式电力系统对基础设施的所有其他部分都很重要，因此对分布式电力系统（变电站、发电厂和控制中心）及其保护进行了更详细的描述。虽然电信系统对大多数其他分布式基础设施也至关重要，但ITU-T所做的工作涵盖了电信网络免受HEMP和其他电磁威胁的保护。本技术规范构成了IEC 61000的第5-8部分。它具有符合IEC指南107的基本EMC出版物的状态。

IEC/TS 61000-5-8:2009(E) provides guidance on how to protect the distributed infrastructure (power, telecommunications, transportation and pipeline networks, etc.) from the threat of a high altitude electromagnetic pulse (HEMP). In order to accomplish this goal, it is necessary to describe the special aspects of the HEMP threat to electrical/electronic systems that are connected and distributed in nature. In particular a nuclear burst at a typical altitude of 100 km will illuminate the Earth to a ground radius from the point directly under the burst to a range of 1 100 km. This means that any distributed and connected infrastructure such as power or telecommunications will observe disturbances simultaneously over a wide area. This type of situation is not normally considered in the EMC or HEMP protection of facilities that are part of a distributed network as the impact of a local disturbance is usually evaluated only locally. IEC/TS 61000-5-8:2009 provides general information concerning the disturbance levels and protection methods for all types of distributed infrastructures. Due to its importance to all other parts of the infrastructure, the distributed electric power system (power substations, generation plants and control centres) and its protection are described in more detail. While the telecommunication system is also critical to most of the other distributed infrastructures, the protection of the telecommunication network from HEMP and other electromagnetic threats is covered by the work done by ITU-T. This technical specification forms Part 5-8 of IEC 61000. It has the status of a basic EMC publication in accordance with IEC Guide 107.