一、防雷排插有必要嗎

裝防雷排插是有必要的。

雷(lei)(lei)擊(ji)后可(ke)使(shi)導體瞬間(jian)感應(ying)極大的電壓(ya)和電流，對(dui)建(jian)筑物(wu)內(nei)的用(yong)電設備造(zao)成(cheng)傷(shang)害。而(er)避雷(lei)(lei)針只能防直(zhi)(zhi)擊(ji)雷(lei)(lei)，且只能對(dui)建(jian)筑物(wu)形(xing)成(cheng)保護。它在防直(zhi)(zhi)擊(ji)雷(lei)(lei)的時(shi)候，還(huan)會(hui)泄放大量感應(ying)雷(lei)(lei)，感應(ying)雷(lei)(lei)會(hui)在瞬間(jian)沿著天線(xian)、饋(kui)線(xian)、信號線(xian)和電源線(xian)等侵入電器內(nei)部，給電器帶(dai)來巨大的傷(shang)害。

而防(fang)雷插座具有防(fang)雷擊保護功能(neng)，有效(xiao)吸收(shou)來自電(dian)源系統的(de)電(dian)涌(yong)(yong)脈沖，確保電(dian)器在惡劣環境下和多雷地(di)區(qu)的(de)安全使用。廣泛(fan)應用于電(dian)子設(she)備、電(dian)子電(dian)器的(de)場所。防(fang)雷插座將(jiang)電(dian)源供電(dian)系統的(de)雷電(dian)、浪(lang)涌(yong)(yong)脈沖予以快速吸收(shou)；辦公(gong)和家電(dian)設(she)備將(jiang)免于被浪(lang)涌(yong)(yong)電(dian)流(liu)侵害(hai)，減少(shao)電(dian)器在雷電(dian)環境下被雷擊損(sun)壞的(de)概率。

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二、防雷排插原理是什么

市(shi)面(mian)上防雷(lei)的方式(shi)主(zhu)要(yao)有三種：

1、將(jiang)壓敏(min)(min)電(dian)(dian)阻(zu)器(qi)(qi)并接于被保護的IC或(huo)設備(bei)電(dian)(dian)路上，當電(dian)(dian)壓瞬間(jian)高于某一數值時(shi)，壓敏(min)(min)電(dian)(dian)阻(zu)器(qi)(qi)阻(zu)值迅速下降，導通大(da)電(dian)(dian)流，從(cong)而保護IC或(huo)電(dian)(dian)器(qi)(qi)設備(bei)；當電(dian)(dian)壓低(di)于壓敏(min)(min)電(dian)(dian)阻(zu)器(qi)(qi)工(gong)作電(dian)(dian)壓值時(shi)，壓敏(min)(min)電(dian)(dian)阻(zu)器(qi)(qi)阻(zu)值極高，近(jin)乎開(kai)路，因而不會(hui)影響(xiang)器(qi)(qi)件或(huo)電(dian)(dian)器(qi)(qi)設備(bei)的正常工(gong)作。

2、將壓敏(min)電(dian)阻(zu)(zu)并聯在電(dian)路(lu)中使(shi)用(yong)，當(dang)L-N時，電(dian)阻(zu)(zu)兩端(duan)的電(dian)壓發(fa)生(sheng)急劇(ju)變(bian)化，在額定的范(fan)(fan)圍內，會吸收高壓，并通過(guo)陶瓷(ci)放電(dian)管釋放；當(dang)超出額定范(fan)(fan)圍時，電(dian)阻(zu)(zu)短路(lu)，形成短路(lu)信號，導致(zhi)使(shi)用(yong)場(chang)所的空(kong)氣保護(hu)開(kai)關分斷，起到保護(hu)電(dian)器和設備的作用(yong)。

3、通(tong)(tong)過陶瓷放(fang)電(dian)(dian)管將雷(lei)(lei)電(dian)(dian)與雷(lei)(lei)電(dian)(dian)電(dian)(dian)磁脈沖的能(neng)(neng)量(liang)通(tong)(tong)過大地泄放(fang)，并且應符合層(ceng)(ceng)次性原則，即盡可能(neng)(neng)多(duo)、盡可能(neng)(neng)遠(yuan)地將多(duo)余(yu)能(neng)(neng)量(liang)在引入電(dian)(dian)路系(xi)統(tong)或(huo)者通(tong)(tong)信系(xi)統(tong)之(zhi)前泄放(fang)入地；層(ceng)(ceng)次性就是按照所設立的防雷(lei)(lei)保護區分層(ceng)(ceng)次對(dui)雷(lei)(lei)電(dian)(dian)能(neng)(neng)量(liang)進(jin)行削弱。