有些客戶會有疑問，電源防雷器能用多久？是不是只能防一次雷擊就壞了呢？今天科比特小編就帶你了解一下電源防雷器的使用壽命。
GB 18802.11標準中(zhong)規定：電(dian)(dian)(dian)(dian)(dian)(dian)源防雷器(qi)是(shi)用于限(xian)制瞬態(tai)過電(dian)(dian)(dian)(dian)(dian)(dian)壓和(he)(he)泄(xie)放(fang)電(dian)(dian)(dian)(dian)(dian)(dian)涌電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)的(de)電(dian)(dian)(dian)(dian)(dian)(dian)器(qi)。電(dian)(dian)(dian)(dian)(dian)(dian)源防雷器(qi)是(shi)并(bing)聯在(zai)主回路上，其作用是(shi)限(xian)制瞬態(tai)過電(dian)(dian)(dian)(dian)(dian)(dian)壓和(he)(he)泄(xie)放(fang)電(dian)(dian)(dian)(dian)(dian)(dian)涌電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)，平時是(shi)高阻(zu)態(tai)狀態(tai)，當電(dian)(dian)(dian)(dian)(dian)(dian)路中(zhong)出現TOV時則會導通(tong)并(bing)泄(xie)放(fang)電(dian)(dian)(dian)(dian)(dian)(dian)涌電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)，可視(shi)為直接接地的(de)導線，能將主回路中(zhong)的(de)電(dian)(dian)(dian)(dian)(dian)(dian)涌電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)泄(xie)放(fang)至接地線。電(dian)(dian)(dian)(dian)(dian)(dian)涌電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)泄(xie)放(fang)完之后(hou)，又恢復成(cheng)高阻(zu)態(tai)狀態(tai)，繼續保護著設備。
那么電源防雷(lei)器能承受多少(shao)次雷(lei)擊(ji)呢？科(ke)比特(te)電源防雷(lei)器的設計壽命(ming)是20年，但是當他們(men)被安裝在不同(tong)的項目中時(shi)，它們(men)的命(ming)運也就各不相同(tong)了。電源防雷(lei)器能用多久？
影響電(dian)源防(fang)雷(lei)器使用壽命的(de)原(yuan)因有很多，其中主要(yao)原(yuan)因要(yao)取決(jue)于(yu)當地的(de)電(dian)力系統是(shi)否穩(wen)定(ding)，是(shi)否在(zai)(zai)(zai)雷(lei)暴高發區，當電(dian)力環境穩(wen)定(ding)，且(qie)不在(zai)(zai)(zai)雷(lei)電(dian)高發區時，電(dian)源防(fang)雷(lei)器可以在(zai)(zai)(zai)它的(de)整個生(sheng)命周(zhou)期內(nei)安(an)然無恙。
在國內，電源防雷器經常出現問(wen)題的(de)行(xing)業(ye)主要是通信、風電(dian)、鐵路等行(xing)業(ye)領域，因為多(duo)(duo)諧波和惡劣(lie)的(de)使用(yong)(yong)環境，造成了(le)這(zhe)些行(xing)業(ye)的(de)電(dian)涌(yong)保(bao)護器(qi)頻繁動作，電(dian)源(yuan)防雷器(qi)劣(lie)化速度快，有時(shi)甚(shen)至(zhi)發生起火現象。所(suo)以(yi)這(zhe)些行(xing)業(ye)的(de)電(dian)源(yuan)防雷器(qi)需要用(yong)(yong)高(gao)質量的(de)浪涌(yong)保(bao)護器(qi)，不容易起火。在正(zheng)常的(de)環境中，電(dian)源(yuan)防雷器(qi)還是很耐(nai)用(yong)(yong)的(de)，有時(shi)10多(duo)(duo)年(nian)都(dou)不壞。
實際上在電(dian)源防雷器的(de)(de)保護動作發生(sheng)過程中，我們是觀察不(bu)到的(de)(de)。電(dian)源防雷器并不(bu)是使用一(yi)次就(jiu)會(hui)壞掉，通常其發生(sheng)一(yi)次沖擊后，能(neng)迅速的(de)(de)從低(di)阻恢(hui)復到高阻狀態(tai)，正常都(dou)能(neng)自動復位，直到其壽命(ming)終結時，表面的(de)(de)指示窗(chuang)口會(hui)從綠色變成紅(hong)色，就(jiu)表示其防雷失效了，需要更換防雷器。
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