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福州電容器測量絕緣電阻的注意事項！

來源：jincuigu.com.cn 發布時間：2019-12-08 返回
　　　電容器測量時應注意以下事項：
　　　

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　　　1、測量前后(hou)對(dui)電(dian)(dian)容(rong)器兩(liang)及(ji)(ji)之間，兩(liang)及(ji)(ji)與地之間，均應(ying)(ying)充分放(fang)電(dian)(dian)，尤其(qi)對(dui)電(dian)(dian)力電(dian)(dian)容(rong)器應(ying)(ying)直(zhi)接從兩(liang)個(ge)引出端上(shang)直(zhi)接放(fang)電(dian)(dian)，而不應(ying)(ying)僅在連(lian)接導(dao)線板(ban)上(shang)放(fang)電(dian)(dian)，因為大多數電(dian)(dian)力電(dian)(dian)容(rong)器兩(liang)及(ji)(ji)與連(lian)接導(dao)線板(ban)連(lian)接時(shi)均串有熔(rong)(rong)斷器，若(ruo)某電(dian)(dian)力電(dian)(dian)容(rong)器熔(rong)(rong)斷器熔(rong)(rong)斷，在連(lian)接板(ban)上(shang)放(fang)電(dian)(dian)不一定能將該(gai)
　　　
　　　2、應按大容量試品的絕緣(yuan)電阻(zu)測量方法搖測電容器。在搖測過(guo)程中應在未斷開絕緣(yuan)兆(zhao)歐表以前，不停(ting)止搖測手柄，防止反充電損壞兆(zhao)歐表。
　　　
　　　3、不(bu)允(yun)許長(chang)時間(jian)搖(yao)測電(dian)(dian)(dian)(dian)(dian)(dian)力電(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)器(qi)兩(liang)(liang)及(ji)(ji)(ji)之(zhi)(zhi)間(jian)的(de)(de)絕(jue)(jue)(jue)緣電(dian)(dian)(dian)(dian)(dian)(dian)阻。因電(dian)(dian)(dian)(dian)(dian)(dian)力電(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)器(qi)電(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)量(liang)較大，儲存(cun)電(dian)(dian)(dian)(dian)(dian)(dian)荷也多，長(chang)時間(jian)搖(yao)測時若操作不(bu)慎易造成人(ren)身及(ji)(ji)(ji)設備事故(gu)。有些單位(wei)在(zai)搖(yao)測電(dian)(dian)(dian)(dian)(dian)(dian)力電(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)器(qi)兩(liang)(liang)及(ji)(ji)(ji)絕(jue)(jue)(jue)緣狀況時，一般先將兆(zhao)歐表輕搖(yao)幾轉(zhuan)，一般不(bu)過5轉(zhuan)，然后通過電(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)器(qi)兩(liang)(liang)及(ji)(ji)(ji)放(fang)(fang)(fang)(fang)(fang)電(dian)(dian)(dian)(dian)(dian)(dian)的(de)(de)放(fang)(fang)(fang)(fang)(fang)電(dian)(dian)(dian)(dian)(dian)(dian)聲(sheng)(sheng)及(ji)(ji)(ji)放(fang)(fang)(fang)(fang)(fang)電(dian)(dian)(dian)(dian)(dian)(dian)火花(hua)來判斷絕(jue)(jue)(jue)緣狀況。若有清(qing)脆的(de)(de)放(fang)(fang)(fang)(fang)(fang)電(dian)(dian)(dian)(dian)(dian)(dian)聲(sheng)(sheng)及(ji)(ji)(ji)明顯的(de)(de)放(fang)(fang)(fang)(fang)(fang)電(dian)(dian)(dian)(dian)(dian)(dian)火花(hua)，則(ze)認為(wei)電(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)器(qi)兩(liang)(liang)及(ji)(ji)(ji)絕(jue)(jue)(jue)緣狀況良好，若無放(fang)(fang)(fang)(fang)(fang)電(dian)(dian)(dian)(dian)(dian)(dian)聲(sheng)(sheng)及(ji)(ji)(ji)火花(hua)，則(ze)可能(neng)是電(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)器(qi)內(nei)部(bu)絕(jue)(jue)(jue)緣受潮老化或兩(liang)(liang)及(ji)(ji)(ji)與電(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)之(zhi)(zhi)間(jian)引線斷開。用這種方法時應(ying)(ying)注意，對兩(liang)(liang)及(ji)(ji)(ji)放(fang)(fang)(fang)(fang)(fang)電(dian)(dian)(dian)(dian)(dian)(dian)的(de)(de)放(fang)(fang)(fang)(fang)(fang)電(dian)(dian)(dian)(dian)(dian)(dian)引線兩(liang)(liang)端應(ying)(ying)接(jie)(jie)在(zai)短絕(jue)(jue)(jue)緣棒上，人(ren)身不(bu)能(neng)直接(jie)(jie)接(jie)(jie)觸放(fang)(fang)(fang)(fang)(fang)電(dian)(dian)(dian)(dian)(dian)(dian)引線，放(fang)(fang)(fang)(fang)(fang)電(dian)(dian)(dian)(dian)(dian)(dian)引線應(ying)(ying)采用裸(luo)銅導線。
　　　
　　　4、沖擊合(he)閘收試(shi)驗時，應(ying)測量每相電(dian)(dian)流(liu)。試(shi)驗前(qian)應(ying)將測量電(dian)(dian)流(liu)互感(gan)器TA事先接(jie)于測量回路(lu)中。如電(dian)(dian)容器組為星形接(jie)線，應(ying)將測量電(dian)(dian)流(liu)互感(gan)器TA串接(jie)于電(dian)(dian)容器中性(xing)點側的回路(lu)內(nei)；
　　　
　　　5、三相電(dian)(dian)(dian)(dian)流不平衡(heng)時，應檢查(cha)(cha)電(dian)(dian)(dian)(dian)容器(qi)組熔斷(duan)器(qi)有(you)無(wu)熔斷(duan)，電(dian)(dian)(dian)(dian)容量是否(fou)合適等(deng)。檢查(cha)(cha)前仍(reng)應對(dui)電(dian)(dian)(dian)(dian)容器(qi)兩級(ji)直(zhi)接放(fang)電(dian)(dian)(dian)(dian)，防止熔斷(duan)器(qi)熔斷(duan)使電(dian)(dian)(dian)(dian)容器(qi)帶有(you)殘余電(dian)(dian)(dian)(dian)荷(he)。

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