HGRW1-35防風型雙柱跌落式高壓熔斷器35kv

風電(dian)(dian)(dian)場供電(dian)(dian)(dian)局HGRW1-35/200高壓(ya)(ya)熔斷器(qi)(qi)防風跌(die)落(luo)式是戶外高壓(ya)(ya)保(bao)護電(dian)(dian)(dian)器(qi)(qi)，它裝配(pei)(pei)在配(pei)(pei)電(dian)(dian)(dian)變(bian)壓(ya)(ya)器(qi)(qi)高壓(ya)(ya)側或配(pei)(pei)電(dian)(dian)(dian)線(xian)支(zhi)干線(xian)路上，作輸(shu)電(dian)(dian)(dian)線(xian)路、電(dian)(dian)(dian)力(li)變(bian)壓(ya)(ya)器(qi)(qi)過載(zai)和短路保(bao)護及分合(he)額定(ding)負荷電(dian)(dian)(dian)流之用。

2、正(zheng)常(chang)使用條件(jian) 2.1環境溫度(du)：不高(gao)于 40℃，不低于-30℃ 2.2海拔高(gao)度(du)：不超過1000m；（1000m以(yi)上(shang)可按GB311.1-1997進行修正(zheng)） 2.3電(dian)源頻率：50±2Hz； 2.4地震烈(lie)度(du)：7度(du)以(yi)下(xia) 2.5**風速(su)：35m/s

3、工作(zuo)原理 跌落(luo)式(shi)熔(rong)(rong)(rong)(rong)(rong)斷(duan)(duan)器(qi)由(you)絕緣子、接(jie)觸導電系(xi)統和(he)熔(rong)(rong)(rong)(rong)(rong)管(guan)三部分(fen)組成。正常工作(zuo)時，熔(rong)(rong)(rong)(rong)(rong)絲(si)使熔(rong)(rong)(rong)(rong)(rong)管(guan)上(shang)的(de)(de)(de)活動(dong)關節鎖緊(jin)，熔(rong)(rong)(rong)(rong)(rong)管(guan)在(zai)(zai)上(shang)觸頭的(de)(de)(de)壓力下(xia)(xia)處于合閘(zha)狀態。故(gu)障時，熔(rong)(rong)(rong)(rong)(rong)絲(si)熔(rong)(rong)(rong)(rong)(rong)斷(duan)(duan)，在(zai)(zai)熔(rong)(rong)(rong)(rong)(rong)管(guan)內(nei)產生(sheng)電弧(hu)，熔(rong)(rong)(rong)(rong)(rong)管(guan)內(nei)襯的(de)(de)(de)消(xiao)弧(hu)管(guan)在(zai)(zai)電弧(hu)作(zuo)用(yong)下(xia)(xia)分(fen)解出大(da)量氣體(ti)，在(zai)(zai)電流(liu)過(guo)零時產生(sheng)強烈(lie)的(de)(de)(de)去游離作(zuo)用(yong)而(er)熄滅電弧(hu)。由(you)于熔(rong)(rong)(rong)(rong)(rong)絲(si)熔(rong)(rong)(rong)(rong)(rong)斷(duan)(duan)，因(yin)而(er)活動(dong)關節釋放使熔(rong)(rong)(rong)(rong)(rong)管(guan)下(xia)(xia)垂，在(zai)(zai)上(shang)、下(xia)(xia)觸頭的(de)(de)(de)彈力和(he)熔(rong)(rong)(rong)(rong)(rong)管(guan)自重的(de)(de)(de)作(zuo)用(yong)下(xia)(xia)迅速跌落(luo)，形成明顯的(de)(de)(de)斷(duan)(duan)開間隙(xi)。

4.熔(rong)斷(duan)(duan)器(qi)(qi)選(xuan)用 安(an)(an)裝地(di)點(dian)(dian)的(de)(de)短(duan)路(lu)容量(liang)應(ying)(ying)在(zai)跌落(luo)式熔(rong)斷(duan)(duan)器(qi)(qi)額定(ding)(ding)斷(duan)(duan)流(liu)容量(liang)范(fan)圍內。若超越上限(xian)(xian)，則可能(neng)因(yin)電流(liu)過(guo)大(da)，產(chan)氣(qi)過(guo)多而使(shi)熔(rong)管**；若低(di)于下(xia)限(xian)(xian)，則有可能(neng)因(yin)電流(liu)過(guo)小，產(chan)氣(qi)不(bu)足而無法熄滅(mie)電弧。因(yin)此，在(zai)選(xuan)擇跌落(luo)式熔(rong)斷(duan)(duan)器(qi)(qi)的(de)(de)額定(ding)(ding)容量(liang)時，既要考慮其(qi)上限(xian)(xian)開(kai)斷(duan)(duan)電流(liu)與安(an)(an)裝地(di)點(dian)(dian)的(de)(de)**短(duan)路(lu)電流(liu)相匹配(pei)，還要重視其(qi)下(xia)限(xian)(xian)開(kai)斷(duan)(duan)容量(liang)與安(an)(an)裝地(di)點(dian)(dian)的(de)(de)小短(duan)路(lu)電流(liu)的(de)(de)關系。考慮到(dao)跌落(luo)式高(gao)壓(ya)(ya)(ya)熔(rong)斷(duan)(duan)器(qi)(qi)作(zuo)為配(pei)電變壓(ya)(ya)(ya)器(qi)(qi)內部(bu)故障(zhang)的(de)(de)主保護(hu)，保護(hu)范(fan)圍從低(di)壓(ya)(ya)(ya)熔(rong)斷(duan)(duan)器(qi)(qi)變壓(ya)(ya)(ya)器(qi)(qi)側到(dao)高(gao)壓(ya)(ya)(ya)熔(rong)斷(duan)(duan)器(qi)(qi)變壓(ya)(ya)(ya)器(qi)(qi)側，而且(qie)又(you)作(zuo)為低(di)壓(ya)(ya)(ya)熔(rong)斷(duan)(duan)器(qi)(qi)的(de)(de)后備保護(hu)，應(ying)(ying)以低(di)壓(ya)(ya)(ya)出口兩相短(duan)路(lu)作(zuo)為短(duan)路(lu)電流(liu)小值來(lai)選(xuan)擇其(qi)下(xia)限(xian)(xian)開(kai)斷(duan)(duan)容量(liang)。

5.熔(rong)(rong)絲(si)(si)(si)(si)的(de)選(xuan)擇 熔(rong)(rong)絲(si)(si)(si)(si)的(de)選(xuan)擇應能保(bao)證(zheng)配電變壓(ya)器(qi)內部或(huo)高(gao)、低壓(ya)出線(xian)套管(guan)發生(sheng)短(duan)路時能迅速(su)熔(rong)(rong)斷(duan)。實踐中常按以(yi)下原則選(xuan)擇：配電變壓(ya)器(qi)容量為160kVA以(yi)下的(de)，熔(rong)(rong)絲(si)(si)(si)(si)按變壓(ya)器(qi)額定(ding)電流的(de)2～3倍(bei)來選(xuan)；配電變壓(ya)器(qi)容量為160kVA及以(yi)上的(de)，按1.5～2倍(bei)選(xuan)擇。熔(rong)(rong)絲(si)(si)(si)(si)的(de)選(xuan)擇還必(bi)(bi)需考(kao)慮熔(rong)(rong)絲(si)(si)(si)(si)的(de)熔(rong)(rong)斷(duan)特性能否(fou)與上級保(bao)護(hu)(hu)時間相(xiang)配合(he)，這是決定(ding)采用熔(rong)(rong)絲(si)(si)(si)(si)保(bao)護(hu)(hu)能否(fou)生(sheng)效的(de)關(guan)鍵問題。配電線(xian)路的(de)速(su)斷(duan)保(bao)護(hu)(hu)動作時間很短(duan)，約為0.1s左(zuo)右。根據(ju)熔(rong)(rong)絲(si)(si)(si)(si)的(de)特性曲線(xian)，在0.1s內使(shi)熔(rong)(rong)絲(si)(si)(si)(si)熔(rong)(rong)斷(duan)的(de)電流應不小于額定(ding)電流的(de)20倍(bei)。這一數據(ju)是保(bao)證(zheng)熔(rong)(rong)絲(si)(si)(si)(si)與首端斷(duan)路器(qi)配合(he)的(de)必(bi)(bi)要條件。

6.跌落式(shi)熔(rong)(rong)(rong)斷器(qi)(qi)的(de)(de)(de)安(an)裝(zhuang) (1)安(an)裝(zhuang)時(shi)(shi)應將熔(rong)(rong)(rong)體(ti)(ti)拉緊(jin)(使(shi)熔(rong)(rong)(rong)體(ti)(ti)大約受(shou)到24.5N左右的(de)(de)(de)拉力(li))，否則容易引起(qi)觸頭(tou)發熱。 (2)熔(rong)(rong)(rong)斷器(qi)(qi)安(an)裝(zhuang)在(zai)橫擔(構架(jia))上(shang)應牢固(gu)可(ke)靠(kao)，不(bu)(bu)(bu)能有(you)任何的(de)(de)(de)晃動(dong)或搖晃現象。 (3)熔(rong)(rong)(rong)管應有(you)向下25°±2°的(de)(de)(de)傾(qing)角，以(yi)(yi)利熔(rong)(rong)(rong)體(ti)(ti)熔(rong)(rong)(rong)斷時(shi)(shi)熔(rong)(rong)(rong)管能依靠(kao)自身重量迅速跌落。 (4)熔(rong)(rong)(rong)斷器(qi)(qi)應安(an)裝(zhuang)在(zai)離(li)(li)地面垂直距(ju)離(li)(li)不(bu)(bu)(bu)小于4m的(de)(de)(de)橫擔(構架(jia))上(shang)，若安(an)裝(zhuang)在(zai)配電變(bian)(bian)壓器(qi)(qi)上(shang)方，應與配變(bian)(bian)的(de)(de)(de)外(wai)輪(lun)廓邊界保持0.5m以(yi)(yi)上(shang)的(de)(de)(de)水平距(ju)離(li)(li)，以(yi)(yi)防萬一熔(rong)(rong)(rong)管掉落引發其他事(shi)故。 (5)熔(rong)(rong)(rong)管的(de)(de)(de)長(chang)度(du)應調整(zheng)適中，要(yao)求(qiu)合閘后鴨嘴舌頭(tou)能扣(kou)住觸頭(tou)長(chang)度(du)的(de)(de)(de)三分之二以(yi)(yi)上(shang)，以(yi)(yi)免在(zai)運行(xing)中發生自行(xing)跌落的(de)(de)(de)誤動(dong)作(zuo)，熔(rong)(rong)(rong)管亦不(bu)(bu)(bu)可(ke)頂死鴨嘴，以(yi)(yi)防止熔(rong)(rong)(rong)體(ti)(ti)熔(rong)(rong)(rong)斷后熔(rong)(rong)(rong)管不(bu)(bu)(bu)能及時(shi)(shi)跌落。 (6)所(suo)使(shi)用的(de)(de)(de)熔(rong)(rong)(rong)體(ti)(ti)必須是正規廠家的(de)(de)(de)標準產品，并具有(you)一定的(de)(de)(de)機械(xie)強(qiang)度(du)，一般要(yao)求(qiu)熔(rong)(rong)(rong)體(ti)(ti)少能承受(shou)147N以(yi)(yi)上(shang)的(de)(de)(de)拉力(li)。 (7) 10kV跌落式(shi)熔(rong)(rong)(rong)斷器(qi)(qi)安(an)裝(zhuang)在(zai)戶外(wai)，要(yao)求(qiu)相間距(ju)離(li)(li)大于70cm。

HGRW1-35防風型雙柱跌落式高壓熔斷器35kv