ABB AB91-1 HESG437479R1 HESG437899

电涌保护器的级联配合:

■第一级保护的SPD应靠近建筑物的入户线的等电位连接端子处，第二、三极保护的SPD应尽量靠近被保护设备安装。

■电涌保护器接至等电位连接的导线要尽可能的短而直。

■限压型SPD之间的线路长度不宜小于5米。

■SPD电源侧应安装过流保护装置(断路器或熔断器)。

SPD连接导线截面

■导线截面应按电涌保护器连接点的短路电流配置。

■并且导线截面至少应等于(保护)器件的接线截面。

随着用电量的不断增加，电网中可能发生的短路电流也就越来越大，因此需要更安全、更可靠和分断能力更强的断路器。

由于具备了特殊的技术特性，高分断微型断路器S500能满足这些要求。它具备热保护及电磁脱扣功能，可以对电路、电动机、设备和配电系统进行过载和短路保护。

主要特性

●额定分断容量高达30/50kA

●额定工作电压高达400/690VAC，750V DC

●限制能量和电流的分断功能

●极短的分断时间(例:当Icc 30 kA时，分断时间小于2.5 ms) 

●优化的选择性

●可靠的开关和触头位置指示

●多种类型以供特殊应用

●体积紧凑

●可选附件范围广泛，包括欠电压脱扣器和分励脱扣器，辅助和信号触点

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