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跌落式熔断器RW10-10F




跌落式熔断器RW10-10F

一、概述


跌落式(shi)熔(rong)断(duan)器(qi)(qi)(qi)及(ji)(ji)拉(la)(la)负(fu)(fu)(fu)荷跌落式(shi)熔(rong)断(duan)器(qi)(qi)(qi)是户外高(gao)压(ya)保护(hu)电器(qi)(qi)(qi)。它(ta)装(zhuang)置(zhi)在配电变压(ya)器(qi)(qi)(qi)高(gao)压(ya)侧或配电线(xian)支(zhi)干(gan)线(xian)路(lu)上、用作变压(ya)器(qi)(qi)(qi)和线(xian)路(lu)的短路(lu)、过载保护(hu)及(ji)(ji)分(fen)、合(he)负(fu)(fu)(fu)荷电流。跌落式(shi)熔(rong)断(duan)器(qi)(qi)(qi)由绝(jue)缘(yuan)支(zhi)架和熔(rong)丝管(guan)二部分(fen)组成(cheng),静触头安装(zhuang)在绝(jue)缘(yuan)支(zhi)架两(liang)端,动触头安装(zhuang)在熔(rong)丝管(guan)两(liang)端,熔(rong)丝管(guan)由内层的消弧(hu)管(guan)和外层的酚醛纸管(guan)或环氧玻璃布(bu)管(guan)组成(cheng)。拉(la)(la)负(fu)(fu)(fu)荷跌落式(shi)熔(rong)断(duan)器(qi)(qi)(qi)增强(qiang)弹性辅助触头及(ji)(ji)灭弧(hu)罩,用以分(fen),合(he)负(fu)(fu)(fu)荷电流。

跌(die)落(luo)式(shi)熔(rong)(rong)(rong)断器在(zai)(zai)正常运行时(shi),熔(rong)(rong)(rong)丝(si)管(guan)借助熔(rong)(rong)(rong)丝(si)张(zhang)紧(jin)(jin)后形成闭合位(wei)置。当系统发生故障时(shi),故障电(dian)(dian)流时(shi)熔(rong)(rong)(rong)丝(si)迅(xun)速熔(rong)(rong)(rong)断,并形成电(dian)(dian)弧(hu)(hu),消弧(hu)(hu)管(guan)受电(dian)(dian)弧(hu)(hu)灼热,分解(jie)出大量的气体,使馆内形成很高压力,并沿管(guan)道(dao)形成纵吹,电(dian)(dian)弧(hu)(hu)被(bei)迅(xun)速拉长而熄(xi)灭(mie)(mie)。熔(rong)(rong)(rong)丝(si)熔(rong)(rong)(rong)断后,下(xia)部(bu)动触(chu)(chu)头(tou)失(shi)去(qu)张(zhang)力二(er)下(xia)翻,锁(suo)紧(jin)(jin)机械,释放熔(rong)(rong)(rong)丝(si)管(guan),熔(rong)(rong)(rong)丝(si)管(guan)跌(die)落(luo),形成明显(xian)的开断位(wei)置。当需要拉负荷时(shi),用绝缘杆拉开动触(chu)(chu)头(tou),此时(shi)主(zhu)动、静动触(chu)(chu)头(tou)仍然接触(chu)(chu),继续(xu)用绝缘杆拉动触(chu)(chu)头(tou),辅(fu)(fu)助触(chu)(chu)头(tou)也分离,在(zai)(zai)辅(fu)(fu)助触(chu)(chu)头(tou)之间产(chan)生电(dian)(dian)弧(hu)(hu),电(dian)(dian)弧(hu)(hu)在(zai)(zai)灭(mie)(mie)罩狭缝中被(bei)拉长,同时(shi)灭(mie)(mie)弧(hu)(hu)罩产(chan)生气体,在(zai)(zai)电(dian)(dian)流过(guo)零时(shi),将电(dian)(dian)弧(hu)(hu)熄(xi)灭(mie)(mie)。 


二、用途


户外跌落式熔断器适用于35kv及以(yi)下(xia)电压频率50Hz电力系(xi)统中,作输电线(xian)路(lu)、电力变压器过载和短路(lu)保护,分(fen)合额(e)定负(fu)荷(he)电流只(zhi)用,机械寿(shou)命≥2000次。 


三、使用条件


1.适用(yong)于环境温度上限(xian)(xian)40℃,下限(xian)(xian)-30℃之内。

2.海拔不超过(guo)1000m,风(feng)速不大于35m/s

3.熔断器不适用(yong)于下述(shu)场所

3.1有燃料或爆(bao)炸危险(xian)的场所。

3.2有(you)剧烈震(zhen)动或(huo)冲击(ji)的场(chang)所(suo)。

3.3有异电化学气(qi)体作用及严(yan)重空气(qi)污(wu)秽,烟(yan)雾地区(qu)。 


四、结构简介


熔(rong)断(duan)器是由基座和(he)消弧(hu)(hu)装(zhuang)(zhuang)置两大部分组成(cheng),灭弧(hu)(hu)管(guan)(guan)下端(duan)装(zhuang)(zhuang)有可(ke)能转动的(de)弹簧支架(jia),始终(zhong)使(shi)熔(rong)丝(si)处于紧张状态,以保证灭弧(hu)(hu)管(guan)(guan)在合(he)闸位置的(de)自锁,线路(lu)与变压(ya)器过载(zai)或短路(lu)中,熔(rong)丝(si)熔(rong)断(duan),熔(rong)丝(si)迅速(su)从(cong)灭弧(hu)(hu)管(guan)(guan)中抽(chou)出,灭弧(hu)(hu)管(guan)(guan)设(she)计(ji)为逐级排气式(shi)解决在同一(yi)熔(rong)断(duan)器上开断(duan)大小(xiao)电流(liu)的(de)矛盾。 


 




 
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