雷电防护.第1部分:一般原则

[中文适用范围]： IEC 62305 的这一部分提供了建筑物防雷保护应遵循的一般原则，包括其安装和内容以及人员。以下情况不属于本标准的范围： – 铁路系统； – 车辆、船舶、飞机、海上设施； – 地下高压管道； - 管道、电力和电信线路放置在建筑物外部。注：这些系统通常受各个专门机构制定的特殊法规的约束。 [外文原描述]： IEC 62305-1:2010 provides general principles to be followed for protection of structures against lightning, including their installations and contents, as well as persons. This second edition cancels and replaces the first edition, published in 2006, and constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: 1) It no longer covers protection of services connected to structures. 2) Isolated interfaces are introduced as protection measures to reduce failure of electric and electronic systems. 3) First negative impulse current is introduced as a new lightning parameter for calculation purposes. 4) Expected surge overcurrents due to lightning flashes have been more accurately specified for low voltage power systems and for telecommunication systems. This bilingual version (2013-01) corresponds to the monolingual English version, published in 2010-12.