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淺聊貫穿電容的故障處理

來源：jincuigu.com.cn 發布時間：2020-05-25 返回
　　貫穿電容是一種我們經常使用到的電子元件，貫穿電容是一種能儲存電荷的容器．它是由兩片*得較近的金屬片，中間再隔以絕緣物質而組成的．按絕緣材料不同，可制成各種各樣的貫穿電容.如：云母．瓷介．紙介，電解貫穿電容等．
　　

貫穿電容


　　由于(yu)故(gu)(gu)障貫穿電(dian)(dian)(dian)容可(ke)能發(fa)生引線(xian)接觸不(bu)良，內(nei)部斷線(xian)或保(bao)險熔斷等現象，因此(ci)仍可(ke)能有部分電(dian)(dian)(dian)荷未放(fang)出來，所以檢修人員(yuan)在接觸故(gu)(gu)障貫穿電(dian)(dian)(dian)容以前，還應戴(dai)上絕緣手套，用短路線(xian)將故(gu)(gu)障貫穿電(dian)(dian)(dian)容的兩(liang)級(ji)短接，還應單(dan)獨進行放(fang)電(dian)(dian)(dian)。
　　
　　（1）當貫穿電(dian)容爆(bao)炸著火時(shi)，就立即斷開(kai)電(dian)源，并用砂(sha)子和干式滅(mie)火器滅(mie)火。
　　
　　（2）當貫穿(chuan)(chuan)電容的保(bao)險(xian)熔斷時，應(ying)向調度匯報，待(dai)取得同意后(hou)再拉開(kai)貫穿(chuan)(chuan)電容的斷路器。切(qie)斷電源對(dui)其進(jin)(jin)行放電，進(jin)(jin)行外部檢查　，如套管的外部有無閃絡(luo)痕跡，外殼是否(fou)(fou)變形(xing)，漏油及(ji)接地裝置有無短路現象(xiang)等，并(bing)搖測(ce)級(ji)間及(ji)級(ji)對(dui)地的絕緣電阻值，檢查貫穿(chuan)(chuan)電容組接線是否(fou)(fou)完整、牢固，是否(fou)(fou)有缺相現象(xiang)，如未發現故障現象(xiang)，可換好保(bao)險(xian)后(hou)投入。
　　
　　（3）貫(guan)穿(chuan)(chuan)(chuan)電(dian)(dian)(dian)容(rong)(rong)的斷路器跳閘，而分(fen)路保險未斷，應先對貫(guan)穿(chuan)(chuan)(chuan)電(dian)(dian)(dian)容(rong)(rong)放電(dian)(dian)(dian)三分(fen)鐘后，再檢查(cha)斷路器電(dian)(dian)(dian)流(liu)互感器電(dian)(dian)(dian)力電(dian)(dian)(dian)纜及(ji)貫(guan)穿(chuan)(chuan)(chuan)電(dian)(dian)(dian)容(rong)(rong)外部等。若(ruo)未發現(xian)異(yi)常，則可能是由于外部故(gu)障母線電(dian)(dian)(dian)壓波動所致(zhi)。經檢查(cha)后，可以試(shi)投；否則，應進一(yi)步對保護(hu)通電(dian)(dian)(dian)試(shi)驗(yan)。通過以上的檢查(cha)、試(shi)驗(yan)，若(ruo)仍找不(bu)出原因，則需按制度(du)辦事，對貫(guan)穿(chuan)(chuan)(chuan)電(dian)(dian)(dian)容(rong)(rong)逐(zhu)漸進行試(shi)驗(yan)。未查(cha)明(ming)原因之前，不(bu)得試(shi)投。
　　
　　處理故障(zhang)(zhang)貫(guan)(guan)穿(chuan)(chuan)電(dian)(dian)容(rong)(rong)時的(de)安全事項。處理故障(zhang)(zhang)貫(guan)(guan)穿(chuan)(chuan)電(dian)(dian)容(rong)(rong)應在斷開貫(guan)(guan)穿(chuan)(chuan)電(dian)(dian)容(rong)(rong)的(de)斷路(lu)器后(hou)，拉(la)開斷路(lu)器兩側的(de)隔離開關，并對貫(guan)(guan)穿(chuan)(chuan)電(dian)(dian)容(rong)(rong)組(zu)放(fang)(fang)(fang)電(dian)(dian)后(hou)進行(xing)。貫(guan)(guan)穿(chuan)(chuan)電(dian)(dian)容(rong)(rong)組(zu)經放(fang)(fang)(fang)電(dian)(dian)電(dian)(dian)阻、放(fang)(fang)(fang)電(dian)(dian)變壓器或放(fang)(fang)(fang)電(dian)(dian)電(dian)(dian)壓互感器放(fang)(fang)(fang)電(dian)(dian)之后(hou)，由于(yu)部分殘余電(dian)(dian)荷一(yi)時放(fang)(fang)(fang)不盡，應將(jiang)(jiang)接(jie)地的(de)接(jie)地端(duan)固(gu)定好，再用接(jie)地棒多(duo)次(ci)對貫(guan)(guan)穿(chuan)(chuan)電(dian)(dian)容(rong)(rong)放(fang)(fang)(fang)電(dian)(dian)直至無(wu)火(huo)花(hua)及放(fang)(fang)(fang)電(dian)(dian)聲為止，然后(hou)將(jiang)(jiang)接(jie)地卡子固(gu)定好。

電容器知識(shi)

穿心電容