Standard No.:	GB/T 18802.21-2004
English Name:	Low-voltage surge protective devices - Part 21:Surge protective devices connected to telecommunications and signalling networks - Performance requirements and testing methods
Chinese Name:	低压电涌保护器 第21部分：电信和信号网络的电涌保护器（SPD）性能要求和试验方法
Chinese Classification:	K30    Low voltage apparatus in general
Professional Classification:	GB    National Standard
ICS Classification:	29.240.10 29.240.10    Substations. Surge arresters 29.240.10
Issued by:	AQSIQ, SAC
Issued on:	2004-2-4
Implemented on:	2004-6-1
Status:	superseded
Superseded by:	GB/T 18802.21-2016 Low-voltage surge protective devices―Part 21: Surge protective devices connected to telecommunications and signaling networks―Performance requirements and testing methods
Superseded on:	2016-9-1
Abolished on:	2016-09-01
Language:	English
File Format:	PDF
Word Count:	18000 words
Price(USD):	540.0
Delivery:	via email in 1~5 business day

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浪涌保护器(以下称为SPD——Surgeprotectivedevice)。这些SPD的作用是对连接到系统标称电压最高为交流1000V(均方根值)、直流1500V的电信网络和信号网络的现代电子设备进行保护。