低压浪涌保护器的有效保护距离  

Analysis of the Effective Protection Distance of Low-Voltage SPD to Equipment

作　　者：袁智勇[1] 许菁[1] 何金良[1] 陈水明[1] 

机构地区：[1]清华大学电机工程与应用电子技术系,北京100084

出　　处：《高电压技术》2003年第8期29-31,共3页High Voltage Engineering

摘　　要：分析了低压电源浪涌保护器 (SPD)与被保护设备的距离及不同类型负载和不同电缆长度对保护效果的影响 ,给出了 SPD的有效保护距离。分析表明 ,由于连接电缆两端产生的反射现象导致 SPD和负载上的电压振荡。这种反射现象与 SPD。The influence of the distance between surge protection device (SPD) and protected equipment is analyzed in this paper. The reflection phenomena on the cables between an external SPD and the protected equipment lead to the oscillations of the voltages on the SPD and on the load. This phenomenon depends on the characteristics of the external SPD, the protected equipment and the connecting cables between the SPD and the load. Three different loads and three different cable length have been simulated in this paper, the effective protection distances of SPDs for loads with different characteristics are presented.

关 键 词：低压电源浪涌保护器 纯容性负载 过电压保护 电缆 

分 类 号：TM86[电气工程—高电压与绝缘技术]