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DCTB電流互感器二(er)次過(guo)電壓保護裝(zhuang)置(zhi)
發布日期:2018-11-09  瀏覽次數:0
電(dian)(dian)(dian)(dian)流(liu)互(hu)(hu)感(gan)(gan)器(qi)(qi)（CT）在(zai)電(dian)(dian)(dian)(dian)力系(xi)統中，廣泛(fan)應用(yong)于(yu)(yu)一次(ci)(ci)(ci)(ci)保(bao)護、測量與(yu)控(kong)制。在(zai)正常(chang)(chang)工作時，互(hu)(hu)感(gan)(gan)器(qi)(qi)二次(ci)(ci)(ci)(ci)側處于(yu)(yu)近(jin)似(si)短(duan)路狀態，輸出(chu)電(dian)(dian)(dian)(dian)壓很(hen)低。當(dang)二次(ci)(ci)(ci)(ci)繞(rao)組開(kai)路或一次(ci)(ci)(ci)(ci)繞(rao)組流(liu)過(guo)異常(chang)(chang)電(dian)(dian)(dian)(dian)流(liu)（如雷電(dian)(dian)(dian)(dian)流(liu)、諧振過(guo)電(dian)(dian)(dian)(dian)流(liu)、電(dian)(dian)(dian)(dian)容充電(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)流(liu)、電(dian)(dian)(dian)(dian)感(gan)(gan)啟(qi)動電(dian)(dian)(dian)(dian)流(liu)等），都會(hui)在(zai)二次(ci)(ci)(ci)(ci)側產生數千伏(fu)甚至(zhi)上萬伏(fu)的(de)過(guo)電(dian)(dian)(dian)(dian)壓。這(zhe)不僅給二次(ci)(ci)(ci)(ci)系(xi)統絕緣造成危害，還(huan)會(hui)使互(hu)(hu)感(gan)(gan)器(qi)(qi)過(guo)激而燒(shao)損，甚至(zhi)危及工作人員的(de)生命(ming)安全。使用(yong) DCTB-Ⅳ系(xi)列CT二次(ci)(ci)(ci)(ci)過(guo)電(dian)(dian)(dian)(dian)壓保(bao)護裝置（以下簡稱：DCTB裝置）就能夠有效防止因電(dian)(dian)(dian)(dian)流(liu)互(hu)(hu)感(gan)(gan)器(qi)(qi)二次(ci)(ci)(ci)(ci)側開(kai)路引起的(de)事故。

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