通信电源防雷器自脱扣原理的研究  

Study on the Auto-break-off Mechanism of Telecommunication Power Lightning Protector

作　　者：胡勇坚[1] 

机构地区：[1]中南林学院电信工程学院,湖南株洲412008

出　　处：《电瓷避雷器》2005年第1期29-31,共3页Insulators and Surge Arresters

摘　　要：LPTP能保护通信电源设备免受过电压及雷击的损害,但当LPTP失效后会发热,对设备造成起火的威胁,因此LPTP失效后必需从电路中断开。合理地选择LPTP劣化后的自动脱扣点很重要。通过对一种LPTP自动脱扣点参数的研究和测量,说明LPTP自动脱扣点的选择方法。Lightning protector of telecommunication power(LPTP) can immune the telecomunicative power equipment to be damaged by overvoltage or lightning. LPTP will induce the menace of burning when it is bad. So the failed LPTP must be cut off from the power. It′s important to choose the suitable auto-break-off mechanism of LPTP. A methodology on measuring the temprure-rise of LPTP and on studying the auto-break-off mechanism of LPTP is narrated based on measuring the data of a kind of product and setting it′s auto-break-off point in this article.

关 键 词：防雷保护器 自脱扣 劣化 

分 类 号：TM862[电气工程—高电压与绝缘技术]