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户外高压交流跌落式熔断器

产品概述(H)RW12- -12(F)户外高压交流跌落式熔断(duan)器是户外高压保护电(dian)器。它装置在配电(dian)变(bian)(bian)压器高压侧或配电(dian)线支干线路上,用作变(bian)(bian)压器…

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(H)RW12- -12(F)户(hu)外高压(ya)交流跌落(luo)式熔断(duan)器(qi)是户(hu)外高压(ya)保护电(dian)(dian)(dian)器(qi)。它装置(zhi)在(zai)配电(dian)(dian)(dian)变(bian)压(ya)器(qi)高压(ya)侧或配电(dian)(dian)(dian)线支干(gan)线路上,用作变(bian)压(ya)器(qi)和(he)线路的(de)(de)短路、过(guo)载保护及(ji)分、合负(fu)荷(he)电(dian)(dian)(dian)流。跌落(luo)式熔断(duan)器(qi)由(you)绝(jue)缘支架和(he)熔丝(si)管二部分组成(cheng),静触头(tou)安装在(zai)绝(jue)缘支架两(liang)端,动触头(tou)安装在(zai)熔丝(si)管两(liang)端丝(si)管由(you)层(ceng)的(de)(de)消弧管和(he)外层(ceng)的(de)(de)环氧玻璃管组成(cheng)。拉负(fu)荷(he)跌落(luo)式熔断(duan)器(qi)增加弹(dan)性辅助触头(tou)及(ji)灭弧罩(zhao),用以分、合负(fu)荷(he)电(dian)(dian)(dian)流。

跌落式熔(rong)(rong)断(duan)器在(zai)正(zheng)常运行时,熔(rong)(rong)丝管借助熔(rong)(rong)丝张紧后形(xing)成闭合位置。当系(xi)统发生(sheng)故障(zhang)时,故障(zhang)电(dian)(dian)(dian)(dian)流使熔(rong)(rong)丝迅速熔(rong)(rong)断(duan)并(bing)形(xing)成电(dian)(dian)(dian)(dian)弧(hu),消弧(hu)管受电(dian)(dian)(dian)(dian)弧(hu)灼热,分(fen)(fen)解出(chu)大量(liang)的气体(ti),使管内形(xing)成很(hen)高压力,井(jing)沿管道形(xing)成纵吹,电(dian)(dian)(dian)(dian)弧(hu)被(bei)声速拉(la)(la)长而(er)熄灭(mie)(mie)。熔(rong)(rong)纯正(zheng)管为(wei)后,下部动(dong)触(chu)头(tou)失去拉(la)(la)力而(er)下翻,锁紧机构释放熔(rong)(rong)丝管,熔(rong)(rong)丝管跌落,形(xing)成明(ming)显的开断(duan)位置。当需要(yao)拉(la)(la)负荷时,用(yong)(yong)绝(jue)(jue)缘(yuan)杆(gan)拉(la)(la)开动(dong)触(chu)头(tou),此(ci)时主(zhu)动(dong)、静助触(chu)头(tou)仍然接触(chu),继续用(yong)(yong)绝(jue)(jue)缘(yuan)杆(gan)拉(la)(la)动(dong)触(chu)头(tou),辅(fu)助触(chu)头(tou)也分(fen)(fen)离,在(zai)辅(fu)助触(chu)头(tou)之间产(chan)生(sheng)电(dian)(dian)(dian)(dian)弧(hu),电(dian)(dian)(dian)(dian)弧(hu)在(zai)灭(mie)(mie)弧(hu)罩(zhao)狭(xia)缝中被(bei)拉(la)(la)长,同(tong)时灭(mie)(mie)弧(hu)罩(zhao)产(chan)生(sheng)气体(ti),在(zai)电(dian)(dian)(dian)(dian)流过零时,将(jiang)电(dian)(dian)(dian)(dian)弧(hu)熄灭(mie)(mie)。

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