RW11-12戶外柱上高壓跌落式熔斷器

10kV跌落式(shi)熔(rong)(rong)(rong)(rong)斷(duan)(duan)器(qi)(qi)(qi)(qi)適用于環(huan)境空氣(qi)無(wu)導電(dian)(dian)(dian)(dian)粉塵、無(wu)腐蝕性(xing)氣(qi)體(ti)及易(yi)燃、易(yi)爆等(deng)危(wei)險(xian)性(xing)環(huan)境，年度溫差變(bian)比(bi)在±40℃以(yi)(yi)內(nei)的(de)(de)戶外場所。其選擇是按照額(e)定(ding)(ding)(ding)(ding)(ding)電(dian)(dian)(dian)(dian)壓和額(e)定(ding)(ding)(ding)(ding)(ding)電(dian)(dian)(dian)(dian)流兩項(xiang)參數(shu)進行(xing)，也就(jiu)是熔(rong)(rong)(rong)(rong)斷(duan)(duan)器(qi)(qi)(qi)(qi)的(de)(de)額(e)定(ding)(ding)(ding)(ding)(ding)電(dian)(dian)(dian)(dian)壓必(bi)(bi)須與被(bei)(bei)保(bao)護(hu)設(she)備(bei)(線路(lu))的(de)(de)額(e)定(ding)(ding)(ding)(ding)(ding)電(dian)(dian)(dian)(dian)壓相(xiang)匹配(pei)。熔(rong)(rong)(rong)(rong)斷(duan)(duan)器(qi)(qi)(qi)(qi)具的(de)(de)額(e)定(ding)(ding)(ding)(ding)(ding)電(dian)(dian)(dian)(dian)流應(ying)大(da)于或等(deng)于熔(rong)(rong)(rong)(rong)體(ti)的(de)(de)額(e)定(ding)(ding)(ding)(ding)(ding)電(dian)(dian)(dian)(dian)流。而(er)熔(rong)(rong)(rong)(rong)體(ti)的(de)(de)額(e)定(ding)(ding)(ding)(ding)(ding)電(dian)(dian)(dian)(dian)流可(ke)選為(wei)額(e)定(ding)(ding)(ding)(ding)(ding)負荷(he)電(dian)(dian)(dian)(dian)流的(de)(de)1.5～2倍。此外，應(ying)按被(bei)(bei)保(bao)護(hu)系統(tong)三相(xiang)短(duan)路(lu)容(rong)量，對所選定(ding)(ding)(ding)(ding)(ding)的(de)(de)熔(rong)(rong)(rong)(rong)斷(duan)(duan)器(qi)(qi)(qi)(qi)進行(xing)校核。保(bao)證被(bei)(bei)保(bao)護(hu)系統(tong)三相(xiang)短(duan)路(lu)容(rong)量小(xiao)(xiao)于熔(rong)(rong)(rong)(rong)斷(duan)(duan)器(qi)(qi)(qi)(qi)額(e)定(ding)(ding)(ding)(ding)(ding)斷(duan)(duan)開(kai)容(rong)量的(de)(de)上限(xian)，但必(bi)(bi)須大(da)于額(e)定(ding)(ding)(ding)(ding)(ding)斷(duan)(duan)開(kai)容(rong)量的(de)(de)下(xia)限(xian)。若熔(rong)(rong)(rong)(rong)斷(duan)(duan)器(qi)(qi)(qi)(qi)的(de)(de)額(e)定(ding)(ding)(ding)(ding)(ding)斷(duan)(duan)開(kai)容(rong)量(一般是指其上限(xian))過大(da)，很可(ke)能(neng)使被(bei)(bei)保(bao)護(hu)系統(tong)三相(xiang)短(duan)路(lu)容(rong)量小(xiao)(xiao)于熔(rong)(rong)(rong)(rong)斷(duan)(duan)器(qi)(qi)(qi)(qi)額(e)定(ding)(ding)(ding)(ding)(ding)斷(duan)(duan)開(kai)容(rong)量的(de)(de)下(xia)限(xian)，造(zao)成在熔(rong)(rong)(rong)(rong)體(ti)熔(rong)(rong)(rong)(rong)斷(duan)(duan)時難以(yi)(yi)滅弧，終引起熔(rong)(rong)(rong)(rong)管燒毀，爆炸(zha)等(deng)事故。一些(xie)供電(dian)(dian)(dian)(dian)單位仍(reng)處于農網改造(zao)高峰，在選用該類(lei)熔(rong)(rong)(rong)(rong)斷(duan)(duan)器(qi)(qi)(qi)(qi)時，必(bi)(bi)須嚴把產(chan)品質量關，保(bao)護(hu)合(he)格的(de)(de)設(she)備(bei)入網，同時要注意到它(ta)的(de)(de)額(e)定(ding)(ding)(ding)(ding)(ding)斷(duan)(duan)開(kai)容(rong)量上限(xian)值(zhi)和下(xia)限(xian)值(zhi)。

　　戶外線路上安(an)裝(zhuang)10KV高壓熔斷(duan)器(qi)RW11-12自行(xing)跌落(luo)使用(yong)環境(jing):

　　1、海(hai)拔：≤2000m及以下；

　　2、周(zhou)圍(wei)空氣(qi)溫度：上限(xian)+30℃，下限(xian)-40℃；

　　3、風壓不超(chao)過700Pa(相當(dang)于風速34m/s)；

　　4、振幅(fu)：無(wu)常性劇(ju)烈震動；

　　5、防污(wu)穢等級Ⅲ級。

戶(hu)外線路上安裝(zhuang)10KV高壓熔斷器RW11-12自(zi)行(xing)跌落安裝(zhuang)
(1) 安裝時應將熔體(ti)拉(la)緊(jin)(使熔體(ti)大約受到24.5N左右的(de)拉(la)力),否則(ze)容(rong)易引起觸(chu)頭(tou)發(fa)熱。 　　

(2) 熔(rong)斷器安(an)裝在橫擔(dan)(構架)上應(ying)牢固可靠(kao),不(bu)能有任何的晃動或搖晃現象。 　　

(3) 熔管應有向(xiang)下25°±2°的傾角,以利(li)熔體(ti)熔斷時熔管能(neng)依靠自身(shen)重量迅速跌落。 　

　(4) 熔斷器應(ying)安裝在離地面垂直(zhi)距離不(bu)小于(yu)4m的橫(heng)擔(構(gou)架)上,若安裝在配電變壓器上方(fang),應與配變的*外輪廓邊界保持0.5m以(yi)上的水平距離,以(yi)防(fang)萬(wan)一熔管掉(diao)落(luo)引發其他事故。 　

　(5) 熔(rong)(rong)(rong)(rong)管的(de)長度應調整適中,要求合(he)閘后鴨(ya)嘴舌頭(tou)能扣住觸頭(tou)長度的(de)三分之二(er)以上,以免在運行中發(fa)生自行跌落(luo)的(de)誤動作,熔(rong)(rong)(rong)(rong)管亦不可(ke)頂死鴨(ya)嘴,以防止熔(rong)(rong)(rong)(rong)體熔(rong)(rong)(rong)(rong)斷(duan)后熔(rong)(rong)(rong)(rong)管不能及時跌落(luo)。 　

　(6) 所使用(yong)的(de)(de)熔體必須是正規廠家的(de)(de)標準產(chan)品,并具有一定(ding)的(de)(de)機械強度,一般要求(qiu)熔體(ti)*少能承受(shou)147N以上的拉(la)力。 　　

(7) 10kV跌(die)落式熔斷(duan)器安裝在戶外,要求相間距離大于70cm

RW11-12戶外柱上高壓跌落式熔斷器