Low-voltage surge protective devices—Part 21:Surge protective devices connected to telecommunications and signaling networks—Performance requirements and testing methods
IDT IEC 61643-21:2012
全国避雷器标准化技术委员会(SAC/TC 81)
本部分适用于对受到雷电或其他瞬态过电压直接或间接影响的电信和信号网络进行防护的电涌保护器(以下称为SPD——Surge protective device)。
这些SPD的作用是对连接到系统标称电压最高为交流1 000 V(有效值)、直流1 500 V的电信网络和信号网络的现代电子设备进行保护。
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