跌(die)落(luo)(luo)式(shi)(shi)熔斷器與(yu)電(dian)(dian)(dian)纜頭之(zhi)(zhi)間作業的(de)(de)安全(quan)措施有(you)哪些？交流(liu)跌(die)落(luo)(luo)式(shi)(shi)熔斷器適用于額定電(dian)(dian)(dian)壓為12kV、額定頻率為50Hz和60Hz的(de)(de)電(dian)(dian)(dian)力(li)系統中，做(zuo)輸配(pei)電(dian)(dian)(dian)線路及電(dian)(dian)(dian)力(li)變壓器的(de)(de)短路和過載保護，以及分合(he)額定負(fu)荷(he)電(dian)(dian)(dian)流(liu)之(zhi)(zhi)用。

（1）宜加裝(zhuang)過渡(du)聯接設備，使(shi)作業時能(neng)與熔斷器上樁頭有電部分堅持安全(quan)間隔。

（2）跌落式(shi)熔斷器上樁(zhuang)頭(tou)帶電，需(xu)不才樁(zhuang)頭(tou)新裝、交換(huan)電纜(lan)終端(duan)引(yin)(yin)出線或吊裝、搭接電纜(lan)終端(duan)頭(tou)及引(yin)(yin)出線時，應(ying)運用絕(jue)(jue)緣工具，并選用絕(jue)(jue)緣罩將跌落式熔斷器上(shang)樁(zhuang)(zhuang)頭隔絕，不才樁(zhuang)(zhuang)頭加裝(zhuang)接地線。

（3）作業時，作業人(ren)員應站(zhan)在低位，伸(shen)手不得逾越跌落式熔斷(duan)器下樁頭，并設專(zhuan)人監護。

（4）阻遏(e)雨天進行以(yi)上作業。

停電操(cao)作(zuo)時，應先拉中(zhong)心相(xiang)(xiang)(xiang)(xiang)(xiang)，后拉兩端(duan)相(xiang)(xiang)(xiang)(xiang)(xiang)。送電時則先合兩端(duan)相(xiang)(xiang)(xiang)(xiang)(xiang)，后合中(zhong)心相(xiang)(xiang)(xiang)(xiang)(xiang)。停電時先拉中(zhong)相(xiang)(xiang)(xiang)(xiang)(xiang)的原因主(zhu)要(yao)是(shi)考慮到中(zhong)相(xiang)(xiang)(xiang)(xiang)(xiang)堵截時的電流要(yao)小(xiao)于邊(bian)相(xiang)(xiang)(xiang)(xiang)(xiang)（電路(lu)一部(bu)分負荷轉由兩相(xiang)(xiang)(xiang)(xiang)(xiang)承擔(dan)），因此電弧小(xiao)，對兩端(duan)相(xiang)(xiang)(xiang)(xiang)(xiang)無風險。操(cao)作(zuo)第二相(xiang)(xiang)(xiang)(xiang)(xiang)（邊(bian)相(xiang)(xiang)(xiang)(xiang)(xiang)）跌落式熔(rong)斷器時，電流較大(da)，而此刻中相(xiang)已(yi)擺開，另(ling)兩個跌落式熔斷器(qi)相(xiang)(xiang)距較(jiao)遠，可(ke)防止(zhi)電(dian)(dian)弧拉長(chang)構成相(xiang)(xiang)間(jian)短路。遇(yu)到勁(jing)風(feng)時，要(yao)按先拉中(zhong)心相(xiang)(xiang)，再拉背風(feng)相(xiang)(xiang)，畢(bi)竟拉頂風(feng)相(xiang)(xiang)的次(ci)序進行(xing)停電(dian)(dian)。送(song)電(dian)(dian)時則先合頂風(feng)相(xiang)(xiang)，再合背鳳相(xiang)(xiang)，畢(bi)竟合中(zhong)心相(xiang)(xiang)，這樣可(ke)以防止(zhi)風(feng)吹(chui)電(dian)(dian)弧構成短路。

跌落式熔斷器(qi)(qi)是(shi)變壓器(qi)(qi)的一種過電流(liu)保護(hu)設備，具有短路保護(hu)、過載保護(hu)等功(gong)能。

跌落式熔(rong)斷器的組成：

跌落式熔(rong)斷(duan)器由絕緣支(zhi)座(zuo)、動態觸頭、熔(rong)絲管(guan)(guan)三部(bu)分組成。靜觸頭安裝在絕緣支(zhi)座(zuo)兩(liang)端，熔(rong)絲管(guan)(guan)由內層的(de)消弧管(guan)(guan)和外(wai)層的(de)酚醛紙管(guan)(guan)或還氧玻璃纖維(wei)布(bu)管(guan)(guan)組成。

作(zuo)業原理：

拉負荷跌落式(shi)熔斷器增加了彈性輔佐觸(chu)頭及滅弧罩，用(yong)以分(fen)合負荷電流。跌落式熔(rong)(rong)(rong)(rong)(rong)斷器在正常(chang)運(yun)行(xing)時，熔(rong)(rong)(rong)(rong)(rong)絲管(guan)憑仗熔(rong)(rong)(rong)(rong)(rong)絲張緊后構成閉合方位。當(dang)系統(tong)產生缺(que)點(dian)(dian)時，缺(que)點(dian)(dian)電(dian)流(liu)使熔(rong)(rong)(rong)(rong)(rong)絲活(huo)絡(luo)熔(rong)(rong)(rong)(rong)(rong)斷，并行(xing)成電(dian)弧(hu)(hu)(hu)，消(xiao)弧(hu)(hu)(hu)管(guan)受(shou)電(dian)弧(hu)(hu)(hu)火熱，分(fen)解出許多氣體(ti)，使管(guan)內構成很高的壓力(li)，并沿管(guan)道劇烈縱吹，電(dian)弧(hu)(hu)(hu)活(huo)絡(luo)被拉(la)長而暫停。熔(rong)(rong)(rong)(rong)(rong)絲熔(rong)(rong)(rong)(rong)(rong)斷后，下(xia)部靜觸頭失(shi)掉張力(li)而下(xia)翻，使縮緊安排開釋(shi)熔(rong)(rong)(rong)(rong)(rong)絲管(guan)，熔(rong)(rong)(rong)(rong)(rong)絲管(guan)跌落構成(cheng)明(ming)顯的開(kai)斷方位。當需(xu)求拉(la)負荷時(shi)，用絕緣桿擺開(kai)動觸頭(tou)，此(ci)刻自動、靜觸頭(tou)仍(reng)然(ran)觸摸(mo)，持續用絕緣桿拉(la)動觸頭(tou)，輔(fu)佐觸頭(tou)也分隔，在出面(mian)之間產生(sheng)電(dian)弧，電(dian)弧在滅(mie)弧罩狹縫中(zhong)被(bei)拉(la)長，一起(qi)滅(mie)弧罩產生(sheng)氣體，在電(dian)流過零時(shi)，將電(dian)弧暫停。