一、過電壓保護器和避雷器的區別
過電壓保護器(qi)和避雷器(qi)都(dou)是用于保護電氣設備(bei)的重要裝置,但它們的工作原理和作用有所不同。
過電壓保護器是一種用于(yu)(yu)電(dian)(dian)(dian)力(li)系(xi)統中的(de)電(dian)(dian)(dian)氣設備(bei)保(bao)(bao)護的(de)裝(zhuang)置,主要用于(yu)(yu)限(xian)制和消除由于(yu)(yu)系(xi)統中出現過(guo)(guo)(guo)(guo)電(dian)(dian)(dian)壓(ya)而(er)對設備(bei)造成的(de)危害。過(guo)(guo)(guo)(guo)電(dian)(dian)(dian)壓(ya)保(bao)(bao)護器(qi)(qi)的(de)工作原(yuan)理(li)是當系(xi)統電(dian)(dian)(dian)壓(ya)超過(guo)(guo)(guo)(guo)額定電(dian)(dian)(dian)壓(ya)時,過(guo)(guo)(guo)(guo)電(dian)(dian)(dian)壓(ya)保(bao)(bao)護器(qi)(qi)能夠及(ji)時引導(dao)過(guo)(guo)(guo)(guo)電(dian)(dian)(dian)流,從(cong)而(er)將過(guo)(guo)(guo)(guo)電(dian)(dian)(dian)壓(ya)的(de)能量分散或吸(xi)收,以保(bao)(bao)護設備(bei)免(mian)受損壞(huai)。過(guo)(guo)(guo)(guo)電(dian)(dian)(dian)壓(ya)保(bao)(bao)護器(qi)(qi)通常(chang)安裝(zhuang)在設備(bei)的(de)進線(xian)、母線(xian)和出線(xian)等位(wei)置,常(chang)用的(de)過(guo)(guo)(guo)(guo)電(dian)(dian)(dian)壓(ya)保(bao)(bao)護器(qi)(qi)有金屬氧化物壓(ya)敏電(dian)(dian)(dian)阻器(qi)(qi)(MO),氣體放電(dian)(dian)(dian)管(guan)(GDT)、硅控整(zheng)流二極管(guan)(SCR)等。
而避雷器則是(shi)(shi)一種(zhong)用于保護電(dian)氣設備(bei)和人員免受雷擊危害的(de)(de)裝置。它是(shi)(shi)一種(zhong)帶有(you)阻抗特性的(de)(de)電(dian)氣元件,能(neng)(neng)夠在雷擊時將雷電(dian)能(neng)(neng)量引(yin)向大地。避雷器(qi)的(de)(de)工(gong)作原理是(shi)(shi)將雷電(dian)通(tong)過特殊的(de)(de)構造引(yin)向大地,防止雷電(dian)進(jin)入(ru)電(dian)氣設備(bei)和建筑物。常(chang)用的(de)(de)避雷器(qi)有(you)針式避雷器(qi)和金屬氧(yang)化(hua)物避雷器(qi)。
因此,過(guo)電(dian)(dian)壓(ya)保護(hu)(hu)器和(he)避(bi)雷(lei)器都(dou)是用(yong)(yong)于(yu)(yu)保護(hu)(hu)電(dian)(dian)氣設備的(de)裝置,但過(guo)電(dian)(dian)壓(ya)保護(hu)(hu)器主要(yao)用(yong)(yong)于(yu)(yu)限制和(he)消除系(xi)統中出現(xian)過(guo)電(dian)(dian)壓(ya)而對設備造成(cheng)的(de)危(wei)害,而避(bi)雷(lei)器主要(yao)用(yong)(yong)于(yu)(yu)保護(hu)(hu)電(dian)(dian)氣設備和(he)人(ren)員免受雷(lei)擊(ji)危(wei)害。
二、過電壓保護器和避雷器能相互替換么
根據二者的不同(tong)作(zuo)用,可以得知(zhi)過電(dian)壓保護器(qi)和避(bi)雷器(qi)并不是相互替代的兩個產品,它們(men)之間各司其(qi)職,相互補充。
在需要(yao)進行(xing)防雷保(bao)護的場(chang)合,二者(zhe)可以同時安裝,達到更(geng)好的保(bao)護效果(guo)。但是(shi)需要(yao)注意(yi),二者(zhe)的安裝位(wei)置(zhi)應(ying)該分(fen)別確定(ding),不(bu)能安裝在同一(yi)個位(wei)置(zhi)。在具體操作時,應(ying)該先(xian)安裝避雷器,然后再安裝過電壓保(bao)護器。