标准摘要
[中文适用范围]： IEC 61000-2-9: 2025 定义了高空电磁脉冲 (HEMP) 环境，这是高空核爆炸的后果之一。核爆炸有两种情况：- 高空核爆炸；- 低空核爆炸。对于民用系统，最重要的情况是高空核爆炸。在这种情况下，核爆炸的其他影响，例如冲击波、地面冲击、热辐射和核电离辐射，在地面上不存在。然而，与爆炸相关的电磁脉冲会导致通信、电子系统、电力系统和其他商业关键基础设施部分的中断和损坏，从而破坏现代社会的稳定。本文件的目的是为 HEMP 环境建立通用参考，以便选择施加于受害设备的实际应力来评估其性能，并制定保护方法以最大限度地减少 HEMP 的影响。第二版取消并取代了1996年出版的第一版。本版为技术修订版。与前一版相比，本版包括以下重大技术变化：a) 更新了文件，提供有关早期HEMP在地球表面变化的新信息，并提供有关晚期HEMP的新信息；b) 增加了一个新的资料性附录A，其中详细介绍了正文中早期和晚期标准波形的开发、使用双指数波形的优缺点以及早期HEMP的远场区域。根据IEC指南107，IEC 61000-2-9:2025具有基本EMC出版物的地位。 [外文原描述]： IEC 61000-2-9: 2025 defines the high-altitude electromagnetic pulse (HEMP) environment that is one of the consequences of a high-altitude nuclear explosion. There are two cases of nuclear detonations: - high-altitude nuclear explosions; - low-altitude nuclear explosions. For civil systems, the most important case is the high-altitude nuclear explosion. In this case, the other effects of the nuclear explosion such as blast, ground shock, thermal and nuclear ionizing radiation are not present at the ground level. However, the electromagnetic pulse associated with the explosion can cause disruption of, and damage to, communications, electronic systems, electric power systems and other portions of the commercial critical infrastructures, thereby upsetting the stability of modern society. The object of this document is to establish a common reference for the HEMP environment in order to select realistic stresses to apply to victim equipment for evaluating their performance and in order to develop protection methods to minimize the impacts of the HEMP. This second edition cancels and replaces the first edition published in 1996. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: a) updating the document to provide new information on the variation of the early-time HEMP on the earth's surface and to provide new information on the late-time HEMP; b) adding a new informative Annex A which provides details concerning the development of the early- and late-time standard waveforms in the main body, an explanation of the advantages and disadvantages for the use of the double exponential waveform, and an explanation of the far field region for the early-time HEMP. IEC 61000-2-9: 2025 has the status of a basic EMC publication in accordance with IEC Guide 107.
英文名称Electromagnetic compatibility (EMC) - Part 2-9: Environment - Description of HEMP environment - Radiated disturbance