一、防雷排插有必要嗎

裝防雷排插是有必要的。

雷(lei)(lei)擊(ji)(ji)后(hou)可(ke)使導體瞬間感應(ying)極(ji)大的電壓和電流，對(dui)建筑物內的用電設(she)備造成傷(shang)害(hai)。而避雷(lei)(lei)針(zhen)只(zhi)能防直(zhi)(zhi)擊(ji)(ji)雷(lei)(lei)，且只(zhi)能對(dui)建筑物形成保護(hu)。它(ta)在防直(zhi)(zhi)擊(ji)(ji)雷(lei)(lei)的時(shi)候(hou)，還會泄放大量(liang)感應(ying)雷(lei)(lei)，感應(ying)雷(lei)(lei)會在瞬間沿著天(tian)線(xian)(xian)(xian)(xian)、饋線(xian)(xian)(xian)(xian)、信號線(xian)(xian)(xian)(xian)和電源線(xian)(xian)(xian)(xian)等侵入(ru)電器(qi)內部，給電器(qi)帶(dai)來(lai)巨大的傷(shang)害(hai)。

而防(fang)雷(lei)插座具有(you)防(fang)雷(lei)擊(ji)保護功能，有(you)效吸收(shou)來自電(dian)(dian)(dian)(dian)源(yuan)(yuan)系統的電(dian)(dian)(dian)(dian)涌脈沖(chong)，確保電(dian)(dian)(dian)(dian)器在(zai)惡劣環(huan)境(jing)下(xia)和多雷(lei)地區的安(an)全(quan)使用。廣泛應用于電(dian)(dian)(dian)(dian)子設備、電(dian)(dian)(dian)(dian)子電(dian)(dian)(dian)(dian)器的場所。防(fang)雷(lei)插座將電(dian)(dian)(dian)(dian)源(yuan)(yuan)供電(dian)(dian)(dian)(dian)系統的雷(lei)電(dian)(dian)(dian)(dian)、浪涌脈沖(chong)予(yu)以快(kuai)速吸收(shou)；辦(ban)公和家電(dian)(dian)(dian)(dian)設備將免于被浪涌電(dian)(dian)(dian)(dian)流侵害，減少電(dian)(dian)(dian)(dian)器在(zai)雷(lei)電(dian)(dian)(dian)(dian)環(huan)境(jing)下(xia)被雷(lei)擊(ji)損壞的概率(lv)。

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二、防雷排插原理是什么

市面上(shang)防(fang)雷的方式(shi)主要(yao)有(you)三(san)種：

1、將壓(ya)(ya)(ya)敏(min)電(dian)(dian)(dian)阻器(qi)(qi)(qi)并接于(yu)被保護的IC或(huo)設(she)(she)備電(dian)(dian)(dian)路上，當(dang)電(dian)(dian)(dian)壓(ya)(ya)(ya)瞬間高于(yu)某(mou)一數值時(shi)，壓(ya)(ya)(ya)敏(min)電(dian)(dian)(dian)阻器(qi)(qi)(qi)阻值迅速下降，導通大電(dian)(dian)(dian)流，從而保護IC或(huo)電(dian)(dian)(dian)器(qi)(qi)(qi)設(she)(she)備；當(dang)電(dian)(dian)(dian)壓(ya)(ya)(ya)低于(yu)壓(ya)(ya)(ya)敏(min)電(dian)(dian)(dian)阻器(qi)(qi)(qi)工作電(dian)(dian)(dian)壓(ya)(ya)(ya)值時(shi)，壓(ya)(ya)(ya)敏(min)電(dian)(dian)(dian)阻器(qi)(qi)(qi)阻值極高，近乎開路，因(yin)而不會(hui)影響器(qi)(qi)(qi)件或(huo)電(dian)(dian)(dian)器(qi)(qi)(qi)設(she)(she)備的正常(chang)工作。

2、將壓(ya)敏電(dian)(dian)阻(zu)并聯在(zai)電(dian)(dian)路(lu)(lu)(lu)中使用(yong)，當L-N時(shi)，電(dian)(dian)阻(zu)兩端的(de)(de)電(dian)(dian)壓(ya)發生急(ji)劇變(bian)化，在(zai)額定(ding)的(de)(de)范圍(wei)(wei)內(nei)，會(hui)吸收高壓(ya)，并通過陶(tao)瓷(ci)放(fang)電(dian)(dian)管釋(shi)放(fang)；當超出額定(ding)范圍(wei)(wei)時(shi)，電(dian)(dian)阻(zu)短(duan)路(lu)(lu)(lu)，形成(cheng)短(duan)路(lu)(lu)(lu)信號(hao)，導(dao)致使用(yong)場所(suo)的(de)(de)空氣保護開(kai)關分斷，起到保護電(dian)(dian)器和設備的(de)(de)作用(yong)。

3、通過陶瓷(ci)放電管將雷(lei)(lei)電與雷(lei)(lei)電電磁(ci)脈沖的能量(liang)通過大地(di)泄放，并且應(ying)符合層(ceng)次性(xing)原則，即(ji)盡可(ke)能多(duo)、盡可(ke)能遠地(di)將多(duo)余能量(liang)在引入電路系統(tong)或者通信系統(tong)之前(qian)泄放入地(di)；層(ceng)次性(xing)就(jiu)是按照所設立(li)的防雷(lei)(lei)保護區分層(ceng)次對雷(lei)(lei)電能量(liang)進行削弱。