一、過電壓保護器和避雷器的區別
過電(dian)壓保護器(qi)和避雷器(qi)都是用(yong)于保護電(dian)氣設備的重要裝置,但它們的工(gong)作原(yuan)理和作用(yong)有所(suo)不(bu)同。
過(guo)電(dian)(dian)(dian)壓(ya)(ya)保(bao)(bao)護(hu)(hu)器(qi)是一種用于電(dian)(dian)(dian)力系統中(zhong)的電(dian)(dian)(dian)氣設備(bei)(bei)保(bao)(bao)護(hu)(hu)的裝置,主要用于限制(zhi)和消除(chu)由于系統中(zhong)出(chu)現過(guo)電(dian)(dian)(dian)壓(ya)(ya)而對(dui)設備(bei)(bei)造成的危(wei)害。過(guo)電(dian)(dian)(dian)壓(ya)(ya)保(bao)(bao)護(hu)(hu)器(qi)的工(gong)作原理是當系統電(dian)(dian)(dian)壓(ya)(ya)超過(guo)額定電(dian)(dian)(dian)壓(ya)(ya)時(shi),過(guo)電(dian)(dian)(dian)壓(ya)(ya)保(bao)(bao)護(hu)(hu)器(qi)能夠(gou)及(ji)時(shi)引導過(guo)電(dian)(dian)(dian)流,從而將過(guo)電(dian)(dian)(dian)壓(ya)(ya)的能量分(fen)散或吸收,以保(bao)(bao)護(hu)(hu)設備(bei)(bei)免受損壞(huai)。過(guo)電(dian)(dian)(dian)壓(ya)(ya)保(bao)(bao)護(hu)(hu)器(qi)通常(chang)安(an)裝在設備(bei)(bei)的進線(xian)、母(mu)線(xian)和出(chu)線(xian)等(deng)位置,常(chang)用的過(guo)電(dian)(dian)(dian)壓(ya)(ya)保(bao)(bao)護(hu)(hu)器(qi)有(you)金屬氧化物壓(ya)(ya)敏電(dian)(dian)(dian)阻器(qi)(MO),氣體放電(dian)(dian)(dian)管(GDT)、硅(gui)控(kong)整流二極管(SCR)等(deng)。
而避雷器則是(shi)一(yi)種(zhong)用(yong)于保護電(dian)氣設(she)備(bei)和(he)(he)人員免(mian)受雷(lei)(lei)擊危害的(de)裝置。它是(shi)一(yi)種(zhong)帶有阻抗特(te)性的(de)電(dian)氣元件,能夠在(zai)雷(lei)(lei)擊時將(jiang)雷(lei)(lei)電(dian)能量引向(xiang)(xiang)大地。避(bi)雷(lei)(lei)器(qi)的(de)工(gong)作原理是(shi)將(jiang)雷(lei)(lei)電(dian)通(tong)過特(te)殊的(de)構造引向(xiang)(xiang)大地,防止雷(lei)(lei)電(dian)進入電(dian)氣設(she)備(bei)和(he)(he)建筑物。常用(yong)的(de)避(bi)雷(lei)(lei)器(qi)有針式避(bi)雷(lei)(lei)器(qi)和(he)(he)金屬氧化(hua)物避(bi)雷(lei)(lei)器(qi)。
因此(ci),過電壓保(bao)護(hu)器和(he)避(bi)雷器都是用于保(bao)護(hu)電氣(qi)設備的(de)裝置,但過電壓保(bao)護(hu)器主要用于限制和(he)消除(chu)系統中出現(xian)過電壓而對(dui)設備造(zao)成的(de)危害,而避(bi)雷器主要用于保(bao)護(hu)電氣(qi)設備和(he)人員(yuan)免受雷擊危害。
二、過電壓保護器和避雷器能相互替換么
根據二者的不(bu)同作用(yong),可以(yi)得(de)知過電(dian)壓保(bao)護器(qi)和避(bi)雷器(qi)并不(bu)是相互(hu)替代的兩個(ge)產品,它(ta)們之間各司其職,相互(hu)補(bu)充(chong)。
在需要進行防(fang)雷保(bao)護(hu)的(de)(de)(de)場合,二(er)者可(ke)以同時(shi)安裝,達到更(geng)好(hao)的(de)(de)(de)保(bao)護(hu)效果。但是(shi)需要注意,二(er)者的(de)(de)(de)安裝位置(zhi)應(ying)該分別確(que)定,不能安裝在同一個(ge)位置(zhi)。在具體操作時(shi),應(ying)該先(xian)安裝避雷器(qi),然后(hou)再安裝過電壓保(bao)護(hu)器(qi)。