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<吉林>羿振電氣有限公司

高壓熔斷器_RW12-10F/200A

高壓熔斷器_RW12-10F/200A
　　跌(die)落(luo)式(shi)(shi)熔(rong)(rong)(rong)(rong)斷(duan)(duan)(duan)器由絕(jue)(jue)(jue)緣(yuan)支(zhi)架(jia)和熔(rong)(rong)(rong)(rong)絲(si)管(guan)(guan)(guan)(guan)(guan)二部分組成(cheng)，靜(jing)(jing)觸(chu)頭(tou)安裝(zhuang)在(zai)(zai)絕(jue)(jue)(jue)緣(yuan)支(zhi)架(jia)兩(liang)端(duan)，動觸(chu)頭(tou)安裝(zhuang)在(zai)(zai)熔(rong)(rong)(rong)(rong)絲(si)管(guan)(guan)(guan)(guan)(guan)兩(liang)端(duan)絲(si)管(guan)(guan)(guan)(guan)(guan)由層的消弧(hu)(hu)管(guan)(guan)(guan)(guan)(guan)和外層的環氧玻(bo)璃管(guan)(guan)(guan)(guan)(guan)組成(cheng)。拉(la)負(fu)荷跌(die)落(luo)式(shi)(shi)熔(rong)(rong)(rong)(rong)斷(duan)(duan)(duan)器增加彈性(xing)輔助觸(chu)頭(tou)及(ji)滅弧(hu)(hu)罩，用以分、合負(fu)荷電流。跌(die)落(luo)式(shi)(shi)熔(rong)(rong)(rong)(rong)斷(duan)(duan)(duan)器在(zai)(zai)正(zheng)常運行時(shi)(shi)，熔(rong)(rong)(rong)(rong)絲(si)管(guan)(guan)(guan)(guan)(guan)借助熔(rong)(rong)(rong)(rong)絲(si)張緊(jin)后形(xing)(xing)成(cheng)閉合位置。 　　當系統發生(sheng)故障(zhang)時(shi)(shi)，故障(zhang)電流使熔(rong)(rong)(rong)(rong)絲(si)迅速(su)熔(rong)(rong)(rong)(rong)斷(duan)(duan)(duan)，并形(xing)(xing)成(cheng)電弧(hu)(hu)，消弧(hu)(hu)管(guan)(guan)(guan)(guan)(guan)受(shou)電弧(hu)(hu)灼熱(re)，分解(jie)出大量的氣體，使管(guan)(guan)(guan)(guan)(guan)內形(xing)(xing)成(cheng)很高(gao)壓(ya)力(li)，并沿管(guan)(guan)(guan)(guan)(guan)道形(xing)(xing)成(cheng)縱吹，電弧(hu)(hu)被迅速(su)拉(la)長(chang)而熄(xi)滅。熔(rong)(rong)(rong)(rong)絲(si)熔(rong)(rong)(rong)(rong)斷(duan)(duan)(duan)后，下部動觸(chu)頭(tou)失去拉(la)力(li)而下翻，鎖(suo)緊(jin)機構釋放熔(rong)(rong)(rong)(rong)絲(si)管(guan)(guan)(guan)(guan)(guan)，熔(rong)(rong)(rong)(rong)絲(si)管(guan)(guan)(guan)(guan)(guan)跌(die)落(luo)，形(xing)(xing)成(cheng)明(ming)顯的開斷(duan)(duan)(duan)位置。 　　當需(xu)要拉(la)負(fu)荷時(shi)(shi)，用絕(jue)(jue)(jue)緣(yuan)桿拉(la)開動觸(chu)頭(tou)，此時(shi)(shi)主動、靜(jing)(jing)助觸(chu)頭(tou)仍(reng)然接觸(chu)，繼(ji)續用絕(jue)(jue)(jue)緣(yuan)桿拉(la)動觸(chu)頭(tou)，輔助觸(chu)頭(tou)也分離，在(zai)(zai)輔助觸(chu)頭(tou)之(zhi)間(jian)產生(sheng)電弧(hu)(hu)，電弧(hu)(hu)在(zai)(zai)滅弧(hu)(hu)罩狹縫中(zhong)被拉(la)長(chang)，同(tong)時(shi)(shi)滅弧(hu)(hu)罩產生(sheng)氣體，在(zai)(zai)電流過零時(shi)(shi)，將電弧(hu)(hu)熄(xi)滅。跌(die)落(luo)原理：熔(rong)(rong)(rong)(rong)斷(duan)(duan)(duan)器靠安裝(zhuang)板固定在(zai)(zai)安裝(zhuang)架(jia)上，熔(rong)(rong)(rong)(rong)斷(duan)(duan)(duan)器在(zai)(zai)運行時(shi)(shi)串聯在(zai)(zai)電力(li)線(xian)路(lu)中(zhong)，正(zheng)常工作(zuo)時(shi)(shi)，熔(rong)(rong)(rong)(rong)絲(si)尾(wei)線(xian)使熔(rong)(rong)(rong)(rong)絲(si)管(guan)(guan)(guan)(guan)(guan)和動觸(chu)頭(tou)間(jian)的活動關節緊(jin)鎖(suo)，熔(rong)(rong)(rong)(rong)絲(si)管(guan)(guan)(guan)(guan)(guan)能在(zai)(zai)靜(jing)(jing)觸(chu)頭(tou)的壓(ya)力(li)下處于(yu)臺閘位置。

高壓熔斷器_RW12-10F/200A
其選擇是(shi)按照額(e)定(ding)(ding)(ding)(ding)電(dian)(dian)壓(ya)(ya)和額(e)定(ding)(ding)(ding)(ding)電(dian)(dian)流(liu)兩(liang)項參數進行(xing)，也就(jiu)是(shi)熔(rong)(rong)斷(duan)(duan)(duan)器(qi)的(de)(de)額(e)定(ding)(ding)(ding)(ding)電(dian)(dian)壓(ya)(ya)必(bi)須(xu)與(yu)被(bei)(bei)(bei)保(bao)護(hu)設備(線路)的(de)(de)額(e)定(ding)(ding)(ding)(ding)電(dian)(dian)壓(ya)(ya)相匹配。熔(rong)(rong)斷(duan)(duan)(duan)器(qi)具(ju)的(de)(de)額(e)定(ding)(ding)(ding)(ding)電(dian)(dian)流(liu)應大于(yu)或等(deng)(deng)于(yu)熔(rong)(rong)體(ti)的(de)(de)額(e)定(ding)(ding)(ding)(ding)電(dian)(dian)流(liu)。而(er)熔(rong)(rong)體(ti)的(de)(de)額(e)定(ding)(ding)(ding)(ding)電(dian)(dian)流(liu)可選為額(e)定(ding)(ding)(ding)(ding)負荷電(dian)(dian)流(liu)的(de)(de)1.5～2倍。 　　此外，應按被(bei)(bei)(bei)保(bao)護(hu)系(xi)統(tong)三相短路容(rong)(rong)量，對(dui)所選定(ding)(ding)(ding)(ding)的(de)(de)熔(rong)(rong)斷(duan)(duan)(duan)器(qi)進行(xing)校核。保(bao)證被(bei)(bei)(bei)保(bao)護(hu)系(xi)統(tong)三相短路容(rong)(rong)量小(xiao)于(yu)熔(rong)(rong)斷(duan)(duan)(duan)器(qi)額(e)定(ding)(ding)(ding)(ding)斷(duan)(duan)(duan)開(kai)容(rong)(rong)量的(de)(de)上限，但必(bi)須(xu)大于(yu)額(e)定(ding)(ding)(ding)(ding)斷(duan)(duan)(duan)開(kai)容(rong)(rong)量的(de)(de)下限。若熔(rong)(rong)斷(duan)(duan)(duan)器(qi)的(de)(de)額(e)定(ding)(ding)(ding)(ding)斷(duan)(duan)(duan)開(kai)容(rong)(rong)量(一(yi)般是(shi)指其上限)過大，很可能使(shi)被(bei)(bei)(bei)保(bao)護(hu)系(xi)統(tong)三相短路容(rong)(rong)量小(xiao)于(yu)熔(rong)(rong)斷(duan)(duan)(duan)器(qi)額(e)定(ding)(ding)(ding)(ding)斷(duan)(duan)(duan)開(kai)容(rong)(rong)量的(de)(de)下限，造成在熔(rong)(rong)體(ti)熔(rong)(rong)斷(duan)(duan)(duan)時難以滅弧，終引起熔(rong)(rong)管燒毀，等(deng)(deng)事故。