IEC 61000的本部分规定了室内电气和电子设备的高空电磁脉冲（HEMP）抗扰度要求。室内HEMP环境取决于设施的电磁屏蔽质量和对传导环境的防护水平。本标准适用于所有设施类型，包括住宅、商业、轻工业、医院、重工业、变电站和发电设施。本标准包括拟连接至低压（1kV或以下）电网、电信网络和/或外部天线的室内设备。 抗扰度测试值基于IEC 61000-4-25中90%的严重程度。假设所有电信线路在进入建筑物的地方都有气管保护器，并且假设低压线路上的绝缘闪络是雷电的三倍。 对于连接到内部电缆的信号端口，严重性测试级别基于总长度为10 m的电缆，并提供了更长电缆的程序。 IEC 61000的本部分未规定设备的安全要求，例如防冲击、绝缘配合和相关的介电测试。然而，IEC 61000本部分所述的抗扰度试验涉及危险电压。高压预防措施对于保护测试人员的健康和安全是必要的。

This part of IEC 61000 sets high-altitude electromagnetic pulse (HEMP) immunity requirements for electrical and electronic equipment intended for use indoors. The indoor HEMP environment depends on the electromagnetic shielding quality of a facility and the level of protection against the conducted environment. This standard is intended for all facility types including residential, commercial, light industrial, hospitals, heavy industrial, power substations and power generation facilities. This standard includes indoor equipment intended to be connected to a low-voltage (1 kV or less) power network, to the telecom network and/or to external antennas. Immunity test values are based on the 90 % severity levels in IEC 61000-4-25. All telecom lines are assumed to have gas-tube protectors at the point where they enter the building and insulation flashover on low-voltage lines are assumed at three times that of lightning. For signal ports connected to internal cables, severity test levels are based on cables that have a total length of 10 m and a procedure is provided for longer cables. This part of IEC 61000 does not specify safety requirements for equipment, such as protection against shock, insulation coordination, and related dielectric tests. Nevertheless, the immunity tests described in this part of IEC 61000 involve hazardous voltages. High-voltage precautions are necessary to protect the health and safety of test personnel.