一、防雷排插有必要嗎

裝防雷排(pai)插(cha)是有必要的。

雷(lei)擊(ji)后可使導體瞬間(jian)感(gan)應(ying)極大(da)的電(dian)壓和電(dian)流，對(dui)(dui)建筑(zhu)物(wu)內的用(yong)電(dian)設備造成傷害。而避雷(lei)針只能防直(zhi)擊(ji)雷(lei)，且(qie)只能對(dui)(dui)建筑(zhu)物(wu)形成保護。它在防直(zhi)擊(ji)雷(lei)的時候，還會泄放大(da)量(liang)感(gan)應(ying)雷(lei)，感(gan)應(ying)雷(lei)會在瞬間(jian)沿(yan)著天線、饋線、信(xin)號線和電(dian)源線等侵入電(dian)器內部，給電(dian)器帶來巨(ju)大(da)的傷害。

而防雷(lei)(lei)插座(zuo)具有防雷(lei)(lei)擊保(bao)護(hu)功能，有效吸收來(lai)自電(dian)源系(xi)統(tong)的電(dian)涌(yong)脈(mo)沖，確(que)保(bao)電(dian)器在(zai)惡劣環境(jing)下和(he)多雷(lei)(lei)地區的安全(quan)使(shi)用(yong)。廣(guang)泛應用(yong)于電(dian)子(zi)設備、電(dian)子(zi)電(dian)器的場所。防雷(lei)(lei)插座(zuo)將電(dian)源供電(dian)系(xi)統(tong)的雷(lei)(lei)電(dian)、浪涌(yong)脈(mo)沖予以快速吸收；辦(ban)公(gong)和(he)家電(dian)設備將免(mian)于被浪涌(yong)電(dian)流侵害，減少電(dian)器在(zai)雷(lei)(lei)電(dian)環境(jing)下被雷(lei)(lei)擊損壞(huai)的概率。

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二、防雷排插原理是什么

市面(mian)上(shang)防(fang)雷(lei)的方式主要有三種：

1、將壓(ya)(ya)(ya)敏電(dian)(dian)(dian)(dian)阻(zu)器(qi)(qi)(qi)并接(jie)于被保護的IC或(huo)設(she)備電(dian)(dian)(dian)(dian)路(lu)上，當(dang)電(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)瞬間高(gao)于某一數值(zhi)時，壓(ya)(ya)(ya)敏電(dian)(dian)(dian)(dian)阻(zu)器(qi)(qi)(qi)阻(zu)值(zhi)迅速下降，導通大電(dian)(dian)(dian)(dian)流，從而保護IC或(huo)電(dian)(dian)(dian)(dian)器(qi)(qi)(qi)設(she)備；當(dang)電(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)低于壓(ya)(ya)(ya)敏電(dian)(dian)(dian)(dian)阻(zu)器(qi)(qi)(qi)工作電(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)值(zhi)時，壓(ya)(ya)(ya)敏電(dian)(dian)(dian)(dian)阻(zu)器(qi)(qi)(qi)阻(zu)值(zhi)極高(gao)，近乎開路(lu)，因(yin)而不會(hui)影響器(qi)(qi)(qi)件或(huo)電(dian)(dian)(dian)(dian)器(qi)(qi)(qi)設(she)備的正常工作。

2、將壓敏電阻并聯在電路(lu)中使用，當(dang)L-N時，電阻兩端(duan)的(de)(de)電壓發(fa)生急劇變化(hua)，在額(e)定的(de)(de)范圍內(nei)，會吸收高壓，并通過陶瓷放(fang)電管釋(shi)放(fang)；當(dang)超(chao)出額(e)定范圍時，電阻短(duan)路(lu)，形(xing)成(cheng)短(duan)路(lu)信號，導致使用場所的(de)(de)空氣(qi)保護開關分斷(duan)，起到保護電器和設備的(de)(de)作用。

3、通(tong)過陶瓷放電(dian)(dian)管將雷電(dian)(dian)與(yu)雷電(dian)(dian)電(dian)(dian)磁脈(mo)沖的能(neng)(neng)量(liang)通(tong)過大地泄放，并且應符合層次性(xing)原則，即盡(jin)可能(neng)(neng)多(duo)、盡(jin)可能(neng)(neng)遠地將多(duo)余能(neng)(neng)量(liang)在(zai)引入(ru)電(dian)(dian)路系統或者(zhe)通(tong)信系統之前泄放入(ru)地；層次性(xing)就(jiu)是按照所設立的防雷保護區(qu)分(fen)層次對雷電(dian)(dian)能(neng)(neng)量(liang)進行削弱(ruo)。