对实际设计工作中建筑物防雷分类容易划分错误的情况进行了分析，并对电涌保护器类型、绝缘配合、参数等的确定进行了研究，同时结合工程实例，详细阐述了选择电涌保护器的注意要点，以保障设备的安全运行。%The paper analyzes the common mistakes in the classification of lightening-shield of building in the design, researches the identification of the surge protection device types, rationalization of insulation, and parameter, and illustrates the precautions in the selection of the surge pro-tection device, so as to ensure the safe operation of equipment.
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