【令克】HRW12-10F/100A

　　熔(rong)(rong)(rong)(rong)絲(si)(si)(si)(si)(si)(si)熔(rong)(rong)(rong)(rong)斷(duan)后(hou)，下部(bu)動(dong)觸(chu)(chu)頭(tou)(tou)(tou)失(shi)去拉(la)(la)(la)力(li)(li)(li)而(er)下翻，鎖緊(jin)機構釋(shi)放(fang)熔(rong)(rong)(rong)(rong)絲(si)(si)(si)(si)(si)(si)管，熔(rong)(rong)(rong)(rong)絲(si)(si)(si)(si)(si)(si)管跌落(luo)，形(xing)成(cheng)(cheng)明顯的(de)(de)開斷(duan)位置。當需(xu)要拉(la)(la)(la)負荷時，用絕緣(yuan)桿(gan)(gan)拉(la)(la)(la)開動(dong)觸(chu)(chu)頭(tou)(tou)(tou)，此(ci)時主動(dong)、靜(jing)(jing)助觸(chu)(chu)頭(tou)(tou)(tou)仍然接觸(chu)(chu)，繼續用絕緣(yuan)桿(gan)(gan)拉(la)(la)(la)動(dong)觸(chu)(chu)頭(tou)(tou)(tou)，輔助觸(chu)(chu)頭(tou)(tou)(tou)也分離，在(zai)(zai)(zai)(zai)(zai)輔助觸(chu)(chu)頭(tou)(tou)(tou)之間產(chan)生電(dian)(dian)(dian)弧(hu)，電(dian)(dian)(dian)弧(hu)在(zai)(zai)(zai)(zai)(zai)滅弧(hu)罩(zhao)狹縫(feng)中被拉(la)(la)(la)長，同(tong)時滅弧(hu)罩(zhao)產(chan)生氣體(ti)，在(zai)(zai)(zai)(zai)(zai)電(dian)(dian)(dian)流過零時，將電(dian)(dian)(dian)弧(hu)熄(xi)滅。 　　當電(dian)(dian)(dian)力(li)(li)(li)系統發(fa)生故障(zhang)時，故障(zhang)電(dian)(dian)(dian)流使熔(rong)(rong)(rong)(rong)絲(si)(si)(si)(si)(si)(si)迅速熔(rong)(rong)(rong)(rong)斷(duan)，在(zai)(zai)(zai)(zai)(zai)熔(rong)(rong)(rong)(rong)絲(si)(si)(si)(si)(si)(si)管內產(chan)生電(dian)(dian)(dian)弧(hu)，熔(rong)(rong)(rong)(rong)絲(si)(si)(si)(si)(si)(si)管內襯的(de)(de)鋼紙(zhi)管和(he)套在(zai)(zai)(zai)(zai)(zai)熔(rong)(rong)(rong)(rong)管上的(de)(de)內消(xiao)弧(hu)管在(zai)(zai)(zai)(zai)(zai)電(dian)(dian)(dian)弧(hu)作(zuo)(zuo)用下產(chan)生大量氣體(ti)，使熔(rong)(rong)(rong)(rong)絲(si)(si)(si)(si)(si)(si)管內形(xing)成(cheng)(cheng)足夠壓(ya)力(li)(li)(li)，并沿熔(rong)(rong)(rong)(rong)絲(si)(si)(si)(si)(si)(si)管道形(xing)成(cheng)(cheng)強(qiang)烈縱吹，使電(dian)(dian)(dian)弧(hu)迅速拉(la)(la)(la)長，在(zai)(zai)(zai)(zai)(zai)電(dian)(dian)(dian)流過零時，由(you)于(yu)強(qiang)烈去游(you)離作(zuo)(zuo)用而(er)熄(xi)滅。 　　跌落(luo)原(yuan)理：熔(rong)(rong)(rong)(rong)斷(duan)器靠安裝(zhuang)板固定在(zai)(zai)(zai)(zai)(zai)安裝(zhuang)架上，熔(rong)(rong)(rong)(rong)斷(duan)器在(zai)(zai)(zai)(zai)(zai)運(yun)行時串(chuan)聯(lian)在(zai)(zai)(zai)(zai)(zai)電(dian)(dian)(dian)力(li)(li)(li)線(xian)路(lu)中，正常工作(zuo)(zuo)時，熔(rong)(rong)(rong)(rong)絲(si)(si)(si)(si)(si)(si)尾(wei)線(xian)使熔(rong)(rong)(rong)(rong)絲(si)(si)(si)(si)(si)(si)管和(he)動(dong)觸(chu)(chu)頭(tou)(tou)(tou)間的(de)(de)活(huo)動(dong)關(guan)節緊(jin)鎖，熔(rong)(rong)(rong)(rong)絲(si)(si)(si)(si)(si)(si)管能在(zai)(zai)(zai)(zai)(zai)靜(jing)(jing)觸(chu)(chu)頭(tou)(tou)(tou)的(de)(de)壓(ya)力(li)(li)(li)下處于(yu)臺閘位置。熔(rong)(rong)(rong)(rong)絲(si)(si)(si)(si)(si)(si)熔(rong)(rong)(rong)(rong)斷(duan)后(hou)，失(shi)去熔(rong)(rong)(rong)(rong)絲(si)(si)(si)(si)(si)(si)的(de)(de)張緊(jin)力(li)(li)(li)，活(huo)動(dong)關(guan)節釋(shi)放(fang)、熔(rong)(rong)(rong)(rong)管在(zai)(zai)(zai)(zai)(zai)上、下靜(jing)(jing)觸(chu)(chu)頭(tou)(tou)(tou)的(de)(de)彈(dan)簧(huang)壓(ya)力(li)(li)(li)和(he)熔(rong)(rong)(rong)(rong)絲(si)(si)(si)(si)(si)(si)管自身重量的(de)(de)作(zuo)(zuo)用下，迅速跌落(luo)，形(xing)成(cheng)(cheng)明顯可(ke)見(jian)的(de)(de)隔(ge)離間隙。

戶外跌落(luo)(luo)式(shi)熔斷器(qi)(qi)適用于交流(liu)50HZ，額定(ding)電壓10kV~35KV的(de)(de)電力系統中(zhong)，作輸(shu)配電線(xian)路(lu)和(he)(he)電力變(bian)壓器(qi)(qi)的(de)(de)過載和(he)(he)短路(lu)保護以及(ji)分、合額定(ding)負荷電流(liu)之(zhi)用廣泛使(shi)用的(de)(de)戶外跌落(luo)(luo)式(shi)熔斷器(qi)(qi)的(de)(de)型(xing)號有(you)RW7型(xing)和(he)(he)RW11型(xing)兩種。 　　在現實的(de)(de)10kV~35KV線(xian)路(lu)系統中(zhong)和(he)(he)配電變(bian)壓器(qi)(qi)上的(de)(de)熔斷器(qi)(qi)不(bu)能正確(que)動作，其原因之(zhi)一是，電工素質差(cha)，責任心不(bu)強，常年(nian)不(bu)進(jin)行(xing)跌落(luo)(luo)式(shi)熔斷器(qi)(qi)的(de)(de)維(wei)護和(he)(he)檢修(xiu)；原因之(zhi)二是，跌落(luo)(luo)式(shi)熔斷器(qi)(qi)的(de)(de)產品質量低(di)劣，不(bu)能靈活的(de)(de)拉、合操作。