一、防雷排插有必要嗎

裝防雷排插是有必要的。

雷擊(ji)后(hou)可使導體瞬(shun)間感應(ying)極大的電(dian)壓和(he)電(dian)流，對(dui)建(jian)筑物(wu)內的用電(dian)設(she)備造成(cheng)傷害。而避雷針只能防(fang)直擊(ji)雷，且只能對(dui)建(jian)筑物(wu)形成(cheng)保(bao)護(hu)。它(ta)在防(fang)直擊(ji)雷的時候，還會泄放大量(liang)感應(ying)雷，感應(ying)雷會在瞬(shun)間沿著(zhu)天線(xian)、饋線(xian)、信(xin)號線(xian)和(he)電(dian)源線(xian)等侵(qin)入(ru)電(dian)器內部，給電(dian)器帶來巨大的傷害。

而防(fang)雷(lei)(lei)插(cha)座具有防(fang)雷(lei)(lei)擊保護功能，有效吸(xi)收來自電(dian)(dian)(dian)源系(xi)統的(de)(de)電(dian)(dian)(dian)涌脈(mo)沖，確(que)保電(dian)(dian)(dian)器在(zai)惡劣環(huan)境下和多雷(lei)(lei)地區的(de)(de)安(an)全使用(yong)。廣泛(fan)應用(yong)于電(dian)(dian)(dian)子設備、電(dian)(dian)(dian)子電(dian)(dian)(dian)器的(de)(de)場(chang)所。防(fang)雷(lei)(lei)插(cha)座將(jiang)(jiang)電(dian)(dian)(dian)源供電(dian)(dian)(dian)系(xi)統的(de)(de)雷(lei)(lei)電(dian)(dian)(dian)、浪涌脈(mo)沖予以快速吸(xi)收；辦公和家電(dian)(dian)(dian)設備將(jiang)(jiang)免于被浪涌電(dian)(dian)(dian)流(liu)侵害，減少電(dian)(dian)(dian)器在(zai)雷(lei)(lei)電(dian)(dian)(dian)環(huan)境下被雷(lei)(lei)擊損(sun)壞的(de)(de)概率。

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二、防雷排插原理是什么

市面上(shang)防雷的方式(shi)主要有三種：

1、將壓(ya)敏電(dian)(dian)(dian)阻器(qi)(qi)并接于(yu)被保(bao)護的(de)IC或設備電(dian)(dian)(dian)路(lu)上(shang)，當電(dian)(dian)(dian)壓(ya)瞬間高(gao)于(yu)某一數值時，壓(ya)敏電(dian)(dian)(dian)阻器(qi)(qi)阻值迅速下(xia)降，導通大電(dian)(dian)(dian)流，從而保(bao)護IC或電(dian)(dian)(dian)器(qi)(qi)設備；當電(dian)(dian)(dian)壓(ya)低于(yu)壓(ya)敏電(dian)(dian)(dian)阻器(qi)(qi)工作電(dian)(dian)(dian)壓(ya)值時，壓(ya)敏電(dian)(dian)(dian)阻器(qi)(qi)阻值極高(gao)，近(jin)乎開(kai)路(lu)，因而不會影(ying)響器(qi)(qi)件或電(dian)(dian)(dian)器(qi)(qi)設備的(de)正常工作。

2、將壓敏電(dian)阻并聯在(zai)電(dian)路中使用(yong)，當L-N時，電(dian)阻兩端(duan)的(de)電(dian)壓發生急劇(ju)變(bian)化(hua)，在(zai)額(e)定(ding)的(de)范(fan)圍(wei)內(nei)，會吸收高壓，并通過陶瓷(ci)放(fang)電(dian)管釋放(fang)；當超(chao)出額(e)定(ding)范(fan)圍(wei)時，電(dian)阻短路，形成短路信號，導致使用(yong)場所的(de)空氣保護(hu)開關分斷，起到(dao)保護(hu)電(dian)器和設備的(de)作用(yong)。

3、通(tong)過陶(tao)瓷(ci)放電(dian)管將(jiang)雷(lei)電(dian)與雷(lei)電(dian)電(dian)磁脈沖的(de)能量(liang)(liang)通(tong)過大地泄放，并且應符合層(ceng)次性原(yuan)則，即盡可(ke)能多、盡可(ke)能遠地將(jiang)多余能量(liang)(liang)在引入電(dian)路系統或者(zhe)通(tong)信系統之前泄放入地；層(ceng)次性就是按(an)照所設立(li)的(de)防雷(lei)保(bao)護區分層(ceng)次對雷(lei)電(dian)能量(liang)(liang)進行削弱。