重慶10kv高壓熔斷器RW12-15

跌落式熔(rong)斷器(qi)及(ji)拉負(fu)荷(he)跌(die)落式熔(rong)斷(duan)器(qi)(qi)是戶外(wai)高壓保護(hu)電(dian)器(qi)(qi)。它裝(zhuang)置在(zai)配(pei)電(dian)變壓器(qi)(qi)高壓側或配(pei)電(dian)線(xian)支干線(xian)路上(shang)、用作變壓器(qi)(qi)和線(xian)路的短路、過(guo)載保護(hu)及(ji)分、合負(fu)荷(he)電(dian)流(liu)。跌(die)落式熔(rong)斷(duan)器(qi)(qi)由(you)絕緣支架和熔(rong)絲管(guan)(guan)二(er)部分組成，靜觸(chu)頭安裝(zhuang)在(zai)絕緣支架兩端，動觸(chu)頭安裝(zhuang)在(zai)熔(rong)絲管(guan)(guan)兩端，熔(rong)絲管(guan)(guan)由(you)內層(ceng)的消弧管(guan)(guan)和外(wai)層(ceng)的酚醛紙(zhi)管(guan)(guan)或環(huan)氧玻璃布管(guan)(guan)組成。拉負(fu)荷(he)跌(die)落式熔(rong)斷(duan)器(qi)(qi)增強彈(dan)性輔助觸(chu)頭及(ji)滅弧罩，用以分，合負(fu)荷(he)電(dian)流(liu)。

跌落式熔(rong)(rong)(rong)斷器在正常運行時(shi)，熔(rong)(rong)(rong)絲管(guan)借助(zhu)熔(rong)(rong)(rong)絲張(zhang)緊(jin)后形(xing)(xing)成閉合(he)位(wei)置。當(dang)系統發生(sheng)故(gu)障時(shi)，故(gu)障電(dian)(dian)流時(shi)熔(rong)(rong)(rong)絲迅速熔(rong)(rong)(rong)斷，并形(xing)(xing)成電(dian)(dian)弧(hu)(hu)(hu)(hu)，消(xiao)弧(hu)(hu)(hu)(hu)管(guan)受電(dian)(dian)弧(hu)(hu)(hu)(hu)灼熱，分解出大量的(de)(de)氣(qi)體(ti)(ti)(ti)，內形(xing)(xing)成很高壓(ya)力(li)，并沿管(guan)道形(xing)(xing)成縱吹，電(dian)(dian)弧(hu)(hu)(hu)(hu)被(bei)迅速拉(la)(la)長(chang)而熄滅。熔(rong)(rong)(rong)絲熔(rong)(rong)(rong)斷后，下部動觸(chu)(chu)頭(tou)(tou)失去張(zhang)力(li)二下翻，鎖緊(jin)機械，釋放熔(rong)(rong)(rong)絲管(guan)，熔(rong)(rong)(rong)絲管(guan)跌落，形(xing)(xing)成明顯(xian)的(de)(de)開斷位(wei)置。當(dang)需要拉(la)(la)負荷時(shi)，用絕緣桿拉(la)(la)開動觸(chu)(chu)頭(tou)(tou)，此時(shi)主動、靜動觸(chu)(chu)頭(tou)(tou)仍然接(jie)觸(chu)(chu)，繼續用絕緣桿拉(la)(la)動觸(chu)(chu)頭(tou)(tou)，輔助(zhu)觸(chu)(chu)頭(tou)(tou)也分離，在輔助(zhu)觸(chu)(chu)頭(tou)(tou)之間產(chan)生(sheng)電(dian)(dian)弧(hu)(hu)(hu)(hu)，電(dian)(dian)弧(hu)(hu)(hu)(hu)在滅罩狹(xia)縫中被(bei)拉(la)(la)長(chang)，同時(shi)滅弧(hu)(hu)(hu)(hu)罩產(chan)生(sheng)氣(qi)體(ti)(ti)(ti)，在電(dian)(dian)流過零時(shi)，將(jiang)電(dian)(dian)弧(hu)(hu)(hu)(hu)熄滅。

二、用途(tu)

戶外高壓熔斷器適用于35kv及以下(xia)電壓頻率50Hz電力系(xi)統中，作(zuo)輸電線路(lu)、電力變壓(ya)器過載和短路(lu)保護，分合額定(ding)負荷電流(liu)只用，機械壽命≥2000次。

三、使用條件

1.適用于環境溫度(du)上限40℃，下限-30℃之內(nei)。
2.海拔(ba)不超過1000m，風速(su)不大于35m/s
3.熔斷器不適用(yong)于下述(shu)場所(suo)
3.1有燃料或(huo)**危險的(de)場所。
3.2有劇烈震(zhen)動(dong)或沖擊(ji)的場所。
3.3有(you)異電化學氣(qi)體作(zuo)用及嚴重空氣(qi)污穢，煙霧地區(qu)。

四、結構簡介

熔(rong)斷器(qi)是由基座和(he)消弧(hu)裝(zhuang)置兩大部分組(zu)成，滅弧(hu)管下端(duan)裝(zhuang)有可能轉動的(de)彈簧支架，始終(zhong)使熔(rong)絲(si)處于緊(jin)張狀(zhuang)態，以保證滅弧(hu)管在(zai)合閘位(wei)置的(de)自鎖，線路與變壓器(qi)過(guo)載(zai)或短路中，熔(rong)絲(si)熔(rong)斷，熔(rong)絲(si)迅速(su)從滅弧(hu)管中抽出，滅弧(hu)管設(she)計為逐級排氣式解決(jue)在(zai)同一熔(rong)斷器(qi)上開斷大小電流的(de)矛(mao)盾。

重慶10kv高壓熔斷器RW12-15