从电源SPD的级配架构判定其安装必要性  

Etermining Necessity for Installation of SPD of Power Supply from Its Gradation Structure

作　　者：洪友白 HONG Youbai(Xiamen Hordor Architecture&Engineering Design Group Co.,Ltd.,Xiamen 361006,Fujian Province,China)

机构地区：[1]厦门合立道工程设计集团股份有限公司,福建省厦门市361006

出　　处：《建筑电气》2018年第11期26-33,共8页Building Electricity

摘　　要：详细分析SPD基于"防反击"和基于"防雷区"的级配架构,并探讨分析在多种特定条件下装设SPD的必要性。最后给出结论:在低压配电系统内安装SPD的必要性是"共地"建筑内重要敏感设备的电涌防护必须也只需"防反击+附加保护"两级SPD;只有经风险评估或以"特有规范规定"替代风险评估时,才有必要也只要安装三级SPD。The gradation structure based on“anti-counterattack”and“lightning protection area”of SPD is analyzed in detail,and the necessity for installation of SPD under various specific conditions is discussed.Finally,it is concluded that the necessity for installation of SPD in low-voltage distribution system is that the surge protection of important sensitive equipment in“common ground”building must and only need two-stage SPD of“anti-counterattack+additional protection”;and it is only necessary to install a three-level SPD if the risk is assessed or the risk assessment is replaced by a“specific regulation.”

关 键 词：电源SPD 级配 防反击 防雷区 敏感设备 附加保护 协同配合 安装必要性 

分 类 号：TU895[建筑科学]