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跌落式熔断器RW5-35/100




跌落式熔断器RW5-35/100

一、概述


跌(die)(die)落(luo)式(shi)熔断(duan)器(qi)及拉(la)负荷(he)跌(die)(die)落(luo)式(shi)熔断(duan)器(qi)是户外(wai)高压(ya)(ya)保护(hu)电器(qi)。它装(zhuang)置(zhi)在(zai)(zai)(zai)配电变压(ya)(ya)器(qi)高压(ya)(ya)侧或(huo)配电线支干线路上(shang)、用作变压(ya)(ya)器(qi)和(he)线路的(de)短路、过(guo)载(zai)保护(hu)及分(fen)(fen)(fen)、合(he)负荷(he)电流。跌(die)(die)落(luo)式(shi)熔断(duan)器(qi)由绝缘支架和(he)熔丝管二部(bu)分(fen)(fen)(fen)组成(cheng),静(jing)触(chu)头安装(zhuang)在(zai)(zai)(zai)绝缘支架两端,动触(chu)头安装(zhuang)在(zai)(zai)(zai)熔丝管两端,熔丝管由内层的(de)消(xiao)弧管和(he)外(wai)层的(de)酚(fen)醛纸(zhi)管或(huo)环氧玻璃(li)布(bu)管组成(cheng)。拉(la)负荷(he)跌(die)(die)落(luo)式(shi)熔断(duan)器(qi)增强弹性(xing)辅助触(chu)头及灭弧罩,用以分(fen)(fen)(fen),合(he)负荷(he)电流。

跌落(luo)式熔(rong)(rong)断(duan)器在(zai)正常运行(xing)时(shi)(shi)(shi)(shi),熔(rong)(rong)丝(si)(si)管(guan)(guan)借助(zhu)熔(rong)(rong)丝(si)(si)张紧后(hou)形(xing)成(cheng)(cheng)闭合位(wei)置。当系统发生(sheng)故障时(shi)(shi)(shi)(shi),故障电(dian)流时(shi)(shi)(shi)(shi)熔(rong)(rong)丝(si)(si)迅速熔(rong)(rong)断(duan),并形(xing)成(cheng)(cheng)电(dian)弧(hu)(hu)(hu),消弧(hu)(hu)(hu)管(guan)(guan)受电(dian)弧(hu)(hu)(hu)灼(zhuo)热(re),分(fen)解出(chu)大量的(de)气体(ti)(ti),使馆(guan)内形(xing)成(cheng)(cheng)很高压力,并沿(yan)管(guan)(guan)道形(xing)成(cheng)(cheng)纵吹(chui),电(dian)弧(hu)(hu)(hu)被迅速拉长而(er)熄(xi)灭(mie)。熔(rong)(rong)丝(si)(si)熔(rong)(rong)断(duan)后(hou),下(xia)部动(dong)触(chu)头(tou)(tou)失(shi)去张力二下(xia)翻,锁紧机械,释放熔(rong)(rong)丝(si)(si)管(guan)(guan),熔(rong)(rong)丝(si)(si)管(guan)(guan)跌落(luo),形(xing)成(cheng)(cheng)明(ming)显的(de)开断(duan)位(wei)置。当需要拉负(fu)荷时(shi)(shi)(shi)(shi),用(yong)(yong)绝缘(yuan)杆拉开动(dong)触(chu)头(tou)(tou),此时(shi)(shi)(shi)(shi)主动(dong)、静动(dong)触(chu)头(tou)(tou)仍然接触(chu),继续用(yong)(yong)绝缘(yuan)杆拉动(dong)触(chu)头(tou)(tou),辅助(zhu)触(chu)头(tou)(tou)也分(fen)离,在(zai)辅助(zhu)触(chu)头(tou)(tou)之间产生(sheng)电(dian)弧(hu)(hu)(hu),电(dian)弧(hu)(hu)(hu)在(zai)灭(mie)罩狭缝中被拉长,同时(shi)(shi)(shi)(shi)灭(mie)弧(hu)(hu)(hu)罩产生(sheng)气体(ti)(ti),在(zai)电(dian)流过零时(shi)(shi)(shi)(shi),将(jiang)电(dian)弧(hu)(hu)(hu)熄(xi)灭(mie)。 


二、用途


户(hu)外跌落式(shi)熔断器适(shi)用(yong)于35kv及(ji)以下电(dian)(dian)(dian)压(ya)频率50Hz电(dian)(dian)(dian)力(li)系(xi)统中,作输电(dian)(dian)(dian)线路、电(dian)(dian)(dian)力(li)变压(ya)器过(guo)载和短路保(bao)护,分(fen)合额(e)定负荷(he)电(dian)(dian)(dian)流只用(yong),机械寿命≥2000次。 


三、使用条件


1.适用于(yu)环境温度上(shang)限40℃,下限-30℃之内。

2.海拔(ba)不超过1000m,风(feng)速不大于35m/s

3.熔(rong)断器不适用于下述场(chang)所

3.1有(you)燃(ran)料(liao)或爆炸(zha)危险的场所(suo)。

3.2有剧烈(lie)震动或冲(chong)击的场所(suo)。

3.3有异电化(hua)学气体作用及(ji)严重空气污秽,烟雾(wu)地区。 


四、结构简介


熔(rong)断(duan)器(qi)(qi)是由基(ji)座和消弧装(zhuang)(zhuang)置(zhi)两大部分(fen)组成,灭(mie)(mie)弧管(guan)下(xia)端装(zhuang)(zhuang)有可能(neng)转动的(de)(de)弹簧支架,始终使熔(rong)丝(si)(si)处(chu)于紧张状态(tai),以保证灭(mie)(mie)弧管(guan)在合闸位(wei)置(zhi)的(de)(de)自(zi)锁,线(xian)路(lu)与(yu)变压器(qi)(qi)过载或短(duan)路(lu)中(zhong),熔(rong)丝(si)(si)熔(rong)断(duan),熔(rong)丝(si)(si)迅速(su)从(cong)灭(mie)(mie)弧管(guan)中(zhong)抽出,灭(mie)(mie)弧管(guan)设计为逐级(ji)排(pai)气式解决(jue)在同一熔(rong)断(duan)器(qi)(qi)上开断(duan)大小电(dian)流的(de)(de)矛盾。 

 




 
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