一、防雷排插有必要嗎

裝防雷排插是有必要的。

雷(lei)(lei)(lei)擊后可使(shi)導(dao)體瞬間感(gan)應極大的電壓和電流，對(dui)建(jian)筑物(wu)內(nei)(nei)的用(yong)電設(she)備造(zao)成(cheng)傷害。而避雷(lei)(lei)(lei)針只能防直擊雷(lei)(lei)(lei)，且(qie)只能對(dui)建(jian)筑物(wu)形成(cheng)保護。它(ta)在防直擊雷(lei)(lei)(lei)的時候(hou)，還會泄放大量感(gan)應雷(lei)(lei)(lei)，感(gan)應雷(lei)(lei)(lei)會在瞬間沿著天線(xian)、饋(kui)線(xian)、信號線(xian)和電源(yuan)線(xian)等(deng)侵入(ru)電器內(nei)(nei)部，給電器帶來巨(ju)大的傷害。

而防雷插(cha)座(zuo)具有防雷擊保(bao)護功能，有效吸(xi)(xi)收來自電(dian)(dian)源(yuan)系統的電(dian)(dian)涌脈沖，確保(bao)電(dian)(dian)器在惡劣環境下和(he)多雷地區的安(an)全使用(yong)。廣(guang)泛應用(yong)于電(dian)(dian)子設(she)備、電(dian)(dian)子電(dian)(dian)器的場所。防雷插(cha)座(zuo)將電(dian)(dian)源(yuan)供(gong)電(dian)(dian)系統的雷電(dian)(dian)、浪涌脈沖予以快速(su)吸(xi)(xi)收；辦公和(he)家電(dian)(dian)設(she)備將免于被(bei)浪涌電(dian)(dian)流侵害，減少電(dian)(dian)器在雷電(dian)(dian)環境下被(bei)雷擊損壞的概(gai)率。

該圖片由注冊用戶"天空之城"提供，版權聲明反饋

二、防雷排插原理是什么

市面上防雷的(de)方式主要(yao)有三種(zhong)：

1、將壓(ya)敏電(dian)(dian)(dian)(dian)(dian)阻(zu)器(qi)(qi)并接于(yu)被保護的IC或設備電(dian)(dian)(dian)(dian)(dian)路上，當電(dian)(dian)(dian)(dian)(dian)壓(ya)瞬間高于(yu)某一(yi)數值(zhi)時(shi)，壓(ya)敏電(dian)(dian)(dian)(dian)(dian)阻(zu)器(qi)(qi)阻(zu)值(zhi)迅速下降，導通大(da)電(dian)(dian)(dian)(dian)(dian)流，從而(er)保護IC或電(dian)(dian)(dian)(dian)(dian)器(qi)(qi)設備；當電(dian)(dian)(dian)(dian)(dian)壓(ya)低于(yu)壓(ya)敏電(dian)(dian)(dian)(dian)(dian)阻(zu)器(qi)(qi)工(gong)作電(dian)(dian)(dian)(dian)(dian)壓(ya)值(zhi)時(shi)，壓(ya)敏電(dian)(dian)(dian)(dian)(dian)阻(zu)器(qi)(qi)阻(zu)值(zhi)極高，近乎開路，因而(er)不會影響器(qi)(qi)件或電(dian)(dian)(dian)(dian)(dian)器(qi)(qi)設備的正常工(gong)作。

2、將壓(ya)敏電阻并聯在電路(lu)中使(shi)用，當L-N時，電阻兩端的(de)電壓(ya)發生(sheng)急劇變化，在額定(ding)的(de)范(fan)圍內(nei)，會(hui)吸(xi)收高壓(ya)，并通(tong)過陶瓷放(fang)電管釋(shi)放(fang)；當超出額定(ding)范(fan)圍時，電阻短路(lu)，形成短路(lu)信號，導致使(shi)用場所的(de)空氣(qi)保護開關分斷，起到(dao)保護電器和設備的(de)作用。

3、通過陶瓷放(fang)(fang)電(dian)管將(jiang)雷(lei)電(dian)與雷(lei)電(dian)電(dian)磁脈沖的能(neng)(neng)(neng)量(liang)(liang)通過大地泄(xie)放(fang)(fang)，并且應符合(he)層(ceng)(ceng)次性(xing)原則(ze)，即盡可能(neng)(neng)(neng)多(duo)、盡可能(neng)(neng)(neng)遠地將(jiang)多(duo)余能(neng)(neng)(neng)量(liang)(liang)在引入電(dian)路(lu)系統(tong)或者(zhe)通信系統(tong)之前泄(xie)放(fang)(fang)入地；層(ceng)(ceng)次性(xing)就是按照所設立的防雷(lei)保護區分層(ceng)(ceng)次對(dui)雷(lei)電(dian)能(neng)(neng)(neng)量(liang)(liang)進行(xing)削弱。