一、防雷排插有必要嗎

裝防雷排插是有必要的。

雷擊后可使導(dao)體瞬間感應(ying)(ying)極大的電(dian)(dian)(dian)壓和電(dian)(dian)(dian)流，對建(jian)筑(zhu)物內(nei)的用電(dian)(dian)(dian)設(she)備造成傷害。而避雷針只能防(fang)(fang)直擊雷，且只能對建(jian)筑(zhu)物形(xing)成保護。它在防(fang)(fang)直擊雷的時候，還會(hui)(hui)泄放大量感應(ying)(ying)雷，感應(ying)(ying)雷會(hui)(hui)在瞬間沿著天線、饋(kui)線、信號(hao)線和電(dian)(dian)(dian)源線等侵入(ru)電(dian)(dian)(dian)器內(nei)部，給(gei)電(dian)(dian)(dian)器帶(dai)來巨大的傷害。

而防雷插座(zuo)具(ju)有防雷擊保(bao)護功(gong)能，有效(xiao)吸收來自電(dian)(dian)(dian)(dian)源系(xi)統(tong)的(de)電(dian)(dian)(dian)(dian)涌(yong)脈沖(chong)，確保(bao)電(dian)(dian)(dian)(dian)器在惡(e)劣環境下和多雷地區的(de)安全使用(yong)。廣泛應用(yong)于(yu)電(dian)(dian)(dian)(dian)子(zi)設備(bei)、電(dian)(dian)(dian)(dian)子(zi)電(dian)(dian)(dian)(dian)器的(de)場所。防雷插座(zuo)將電(dian)(dian)(dian)(dian)源供(gong)電(dian)(dian)(dian)(dian)系(xi)統(tong)的(de)雷電(dian)(dian)(dian)(dian)、浪涌(yong)脈沖(chong)予(yu)以快速吸收；辦公和家電(dian)(dian)(dian)(dian)設備(bei)將免于(yu)被(bei)(bei)浪涌(yong)電(dian)(dian)(dian)(dian)流侵(qin)害，減少(shao)電(dian)(dian)(dian)(dian)器在雷電(dian)(dian)(dian)(dian)環境下被(bei)(bei)雷擊損壞的(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(san)種：

1、將壓敏(min)(min)電(dian)阻器并(bing)接于(yu)被保護的(de)IC或(huo)設(she)備(bei)(bei)電(dian)路(lu)上，當(dang)電(dian)壓瞬間高于(yu)某(mou)一數值(zhi)時，壓敏(min)(min)電(dian)阻器阻值(zhi)迅速下降，導通(tong)大電(dian)流，從(cong)而(er)保護IC或(huo)電(dian)器設(she)備(bei)(bei)；當(dang)電(dian)壓低于(yu)壓敏(min)(min)電(dian)阻器工(gong)作電(dian)壓值(zhi)時，壓敏(min)(min)電(dian)阻器阻值(zhi)極高，近乎(hu)開路(lu)，因而(er)不會影(ying)響器件或(huo)電(dian)器設(she)備(bei)(bei)的(de)正常工(gong)作。

2、將壓(ya)敏電(dian)(dian)阻并聯在(zai)電(dian)(dian)路(lu)中使(shi)用，當(dang)L-N時，電(dian)(dian)阻兩端的(de)(de)電(dian)(dian)壓(ya)發生(sheng)急劇變化，在(zai)額(e)(e)定(ding)的(de)(de)范圍內，會吸收高壓(ya)，并通過陶瓷放電(dian)(dian)管(guan)釋放；當(dang)超出(chu)額(e)(e)定(ding)范圍時，電(dian)(dian)阻短路(lu)，形成短路(lu)信號，導致使(shi)用場所的(de)(de)空氣保護開(kai)關分斷，起到(dao)保護電(dian)(dian)器和(he)設備(bei)的(de)(de)作用。

3、通過陶瓷放電(dian)(dian)管將雷(lei)電(dian)(dian)與雷(lei)電(dian)(dian)電(dian)(dian)磁脈沖的能(neng)量(liang)(liang)通過大地(di)泄放，并且(qie)應符合(he)層次性原則，即盡可(ke)能(neng)多、盡可(ke)能(neng)遠地(di)將多余(yu)能(neng)量(liang)(liang)在(zai)引入電(dian)(dian)路系(xi)統或者通信(xin)系(xi)統之(zhi)前泄放入地(di)；層次性就(jiu)是按(an)照所設立的防雷(lei)保(bao)護區分層次對雷(lei)電(dian)(dian)能(neng)量(liang)(liang)進(jin)行削弱。