铠装电缆在雷电防护中的使用探讨

Discussion on the Use of Armored Cable in Lightning Protection

根据现行国内、国际标准规范的要求,结合计算实例,研究铠装或屏蔽电缆对雷电保护分区延伸的标准要求,并提供数学计算公式对铠装或屏蔽电缆最小截面积进行推导、计算,为使用铠装或屏蔽电缆的用电设备是否可考虑不安装电涌保护器(SPD)提供了基础依据,对工程应用有一定的借鉴作用。

According to the requirements of current domestic and international standards and codes,combined with calculation examples.The standard requirements of armored or shielded cables for lightning protection zoning extension are studied,and some mathematical calculation formulas to deduce and calculate the minimum cross-sectional area of armored or shielded cables are provided,which provides a basic basis for whether the electrical equipment using armored or shielded cables can consider not installing surge protection device(SPD).It can be used for reference in engineering application.