当雷击中建筑物或附近时,雷电流在建筑物周围空间产生瞬变的强电磁场对机房设备造成严重危害。文章通过研究对不同雷击点在机房各种不同屏蔽措施下产生的磁场强度分析,来研究机房屏蔽效能,以期找到防御雷击电磁脉冲的方法。 When a lightning strikes a building or in the vicinity, a strong electromagnetic field that generates a transient in the space around the building causes serious damage to the equipment in the room. The article studies the intensity of the magnetic field generated by different lightning strikes in different room shielding measures to study the shielding effectiveness of the engine room in order to find a way to defend the lightning pulse.