改变(bian)变(bian)截面的(de)(de)(de)(de)形(xing)状可(ke)(ke)改变(bian)熔(rong)(rong)断(duan)(duan)(duan)(duan)器(qi)(qi)的(de)(de)(de)(de)熔(rong)(rong)断(duan)(duan)(duan)(duan)特性(xing)。熔(rong)(rong)断(duan)(duan)(duan)(duan)器(qi)(qi)有各种不(bu)同(tong)(tong)的(de)(de)(de)(de)熔(rong)(rong)断(duan)(duan)(duan)(duan)特性(xing)曲(qu)线，可(ke)(ke)以适用(yong)(yong)于不(bu)同(tong)(tong)类(lei)型保(bao)(bao)护(hu)(hu)对象的(de)(de)(de)(de)需要。安(an)(an)秒(miao)特性(xing)：熔(rong)(rong)断(duan)(duan)(duan)(duan)器(qi)(qi)的(de)(de)(de)(de)动(dong)作(zuo)是(shi)靠(kao)熔(rong)(rong)体(ti)的(de)(de)(de)(de)熔(rong)(rong)断(duan)(duan)(duan)(duan)来实现的(de)(de)(de)(de)，熔(rong)(rong)断(duan)(duan)(duan)(duan)器(qi)(qi)有个非常(chang)明显的(de)(de)(de)(de)特性(xing)，就是(shi)安(an)(an)秒(miao)特性(xing)。熔(rong)(rong)断(duan)(duan)(duan)(duan)器(qi)(qi)（图6）对熔(rong)(rong)体(ti)来说(shuo)，其动(dong)作(zuo)电(dian)(dian)流(liu)(liu)(liu)和(he)动(dong)作(zuo)时(shi)(shi)间特性(xing)即熔(rong)(rong)断(duan)(duan)(duan)(duan)器(qi)(qi)的(de)(de)(de)(de)安(an)(an)秒(miao)特性(xing)，也叫反时(shi)(shi)延特性(xing)，即：过载电(dian)(dian)流(liu)(liu)(liu)小时(shi)(shi)，熔(rong)(rong)断(duan)(duan)(duan)(duan)时(shi)(shi)间长(zhang)(zhang)；过载电(dian)(dian)流(liu)(liu)(liu)大时(shi)(shi)，熔(rong)(rong)断(duan)(duan)(duan)(duan)时(shi)(shi)间短(duan)。对安(an)(an)秒(miao)特性(xing)的(de)(de)(de)(de)理解，我们从(cong)焦耳定律上(shang)可(ke)(ke)以看(kan)到Q=I*R*T，串联回路里(li)(li)，熔(rong)(rong)断(duan)(duan)(duan)(duan)器(qi)(qi)的(de)(de)(de)(de)R值(zhi)基(ji)本不(bu)变(bian)，发(fa)热量(liang)与电(dian)(dian)流(liu)(liu)(liu)I的(de)(de)(de)(de)平方成(cheng)正比(bi)，与发(fa)热时(shi)(shi)间T成(cheng)正比(bi)，也就是(shi)说(shuo)：当(dang)电(dian)(dian)流(liu)(liu)(liu)较(jiao)(jiao)大时(shi)(shi)，熔(rong)(rong)体(ti)熔(rong)(rong)断(duan)(duan)(duan)(duan)所(suo)需的(de)(de)(de)(de)时(shi)(shi)间就较(jiao)(jiao)短(duan)。而电(dian)(dian)流(liu)(liu)(liu)较(jiao)(jiao)小时(shi)(shi)，熔(rong)(rong)体(ti)熔(rong)(rong)断(duan)(duan)(duan)(duan)所(suo)需用(yong)(yong)的(de)(de)(de)(de)时(shi)(shi)间就较(jiao)(jiao)长(zhang)(zhang)，甚(shen)至如果(guo)热量(liang)积累的(de)(de)(de)(de)速度小于热扩散的(de)(de)(de)(de)速度，熔(rong)(rong)断(duan)(duan)(duan)(duan)器(qi)(qi)温(wen)度就不(bu)会上(shang)升到熔(rong)(rong)点(dian)，熔(rong)(rong)断(duan)(duan)(duan)(duan)器(qi)(qi)甚(shen)至不(bu)会熔(rong)(rong)断(duan)(duan)(duan)(duan)。所(suo)以，在(zai)(zai)一定过载电(dian)(dian)流(liu)(liu)(liu)范围内，当(dang)电(dian)(dian)流(liu)(liu)(liu)恢复(fu)正常(chang)时(shi)(shi)，熔(rong)(rong)断(duan)(duan)(duan)(duan)器(qi)(qi)不(bu)会熔(rong)(rong)断(duan)(duan)(duan)(duan)，可(ke)(ke)继续(xu)使用(yong)(yong)。因此，每一熔(rong)(rong)体(ti)都(dou)有一熔(rong)(rong)化(hua)电(dian)(dian)流(liu)(liu)(liu)。相应于不(bu)同(tong)(tong)的(de)(de)(de)(de)温(wen)度，小熔(rong)(rong)化(hua)电(dian)(dian)流(liu)(liu)(liu)也不(bu)同(tong)(tong)。虽然该电(dian)(dian)流(liu)(liu)(liu)受外界环境(jing)的(de)(de)(de)(de)影(ying)响(xiang)，但(dan)在(zai)(zai)实际应用(yong)(yong)中可(ke)(ke)以不(bu)加考(kao)虑。一般定义(yi)熔(rong)(rong)体(ti)的(de)(de)(de)(de)小熔(rong)(rong)断(duan)(duan)(duan)(duan)电(dian)(dian)流(liu)(liu)(liu)与熔(rong)(rong)体(ti)的(de)(de)(de)(de)额(e)(e)(e)定电(dian)(dian)流(liu)(liu)(liu)之(zhi)比(bi)为小熔(rong)(rong)化(hua)系(xi)(xi)数，常(chang)用(yong)(yong)熔(rong)(rong)体(ti)的(de)(de)(de)(de)熔(rong)(rong)化(hua)系(xi)(xi)数大于，也就是(shi)说(shuo)额(e)(e)(e)定电(dian)(dian)流(liu)(liu)(liu)为10A的(de)(de)(de)(de)熔(rong)(rong)体(ti)在(zai)(zai)电(dian)(dian)流(liu)(liu)(liu)。从(cong)这里(li)(li)可(ke)(ke)以看(kan)出，熔(rong)(rong)断(duan)(duan)(duan)(duan)器(qi)(qi)的(de)(de)(de)(de)短(duan)路保(bao)(bao)护(hu)(hu)性(xing)能。熔(rong)(rong)体(ti)额(e)(e)(e)定电(dian)(dian)流(liu)(liu)(liu)不(bu)等于熔(rong)(rong)断(duan)(duan)(duan)(duan)器(qi)(qi)额(e)(e)(e)定电(dian)(dian)流(liu)(liu)(liu)，熔(rong)(rong)体(ti)额(e)(e)(e)定电(dian)(dian)流(liu)(liu)(liu)按(an)被保(bao)(bao)护(hu)(hu)设备(bei)的(de)(de)(de)(de)负荷电(dian)(dian)流(liu)(liu)(liu)选择。广东品质SIEMENS西门子熔(rong)(rong)断(duan)(duan)(duan)(duan)器(qi)(qi)现货

熔(rong)(rong)(rong)(rong)(rong)(rong)(rong)(rong)体(ti)(ti)(ti)(ti)相(xiang)当于(yu)串联在(zai)电(dian)(dian)(dian)(dian)路(lu)中(zhong)(zhong)的(de)(de)一(yi)段特(te)殊的(de)(de)导(dao)(dao)线(xian)，当电(dian)(dian)(dian)(dian)路(lu)发生短路(lu)或过载(zai)(zai)时，电(dian)(dian)(dian)(dian)流(liu)过大，熔(rong)(rong)(rong)(rong)(rong)(rong)(rong)(rong)体(ti)(ti)(ti)(ti)因过热而熔(rong)(rong)(rong)(rong)(rong)(rong)(rong)(rong)化(hua)，从而切(qie)断(duan)(duan)(duan)(duan)(duan)(duan)电(dian)(dian)(dian)(dian)路(lu)。熔(rong)(rong)(rong)(rong)(rong)(rong)(rong)(rong)体(ti)(ti)(ti)(ti)常做成丝状、栅状或片状。熔(rong)(rong)(rong)(rong)(rong)(rong)(rong)(rong)体(ti)(ti)(ti)(ti)材料(liao)具有(you)相(xiang)对熔(rong)(rong)(rong)(rong)(rong)(rong)(rong)(rong)点低、特(te)性(xing)稳定(ding)、易于(yu)熔(rong)(rong)(rong)(rong)(rong)(rong)(rong)(rong)断(duan)(duan)(duan)(duan)(duan)(duan)的(de)(de)特(te)点。一(yi)般采(cai)用铅锡合金、镀银(yin)(yin)铜片、锌、银(yin)(yin)等(deng)金属。在(zai)熔(rong)(rong)(rong)(rong)(rong)(rong)(rong)(rong)体(ti)(ti)(ti)(ti)熔(rong)(rong)(rong)(rong)(rong)(rong)(rong)(rong)断(duan)(duan)(duan)(duan)(duan)(duan)切(qie)断(duan)(duan)(duan)(duan)(duan)(duan)电(dian)(dian)(dian)(dian)路(lu)的(de)(de)过程(cheng)中(zhong)(zhong)会产生电(dian)(dian)(dian)(dian)弧，为了安全有(you)效地熄(xi)灭(mie)电(dian)(dian)(dian)(dian)弧，一(yi)般均将熔(rong)(rong)(rong)(rong)(rong)(rong)(rong)(rong)体(ti)(ti)(ti)(ti)安装在(zai)熔(rong)(rong)(rong)(rong)(rong)(rong)(rong)(rong)断(duan)(duan)(duan)(duan)(duan)(duan)器(qi)(qi)壳(qiao)体(ti)(ti)(ti)(ti)内(nei)，采(cai)取(qu)措(cuo)施，快速熄(xi)灭(mie)电(dian)(dian)(dian)(dian)弧。熔(rong)(rong)(rong)(rong)(rong)(rong)(rong)(rong)断(duan)(duan)(duan)(duan)(duan)(duan)器(qi)(qi)具有(you)结(jie)构(gou)简单、使(shi)用方(fang)便、价格低廉等(deng)优点，在(zai)低压(ya)(ya)(ya)(ya)系统(tong)中(zhong)(zhong)被应用。熔(rong)(rong)(rong)(rong)(rong)(rong)(rong)(rong)断(duan)(duan)(duan)(duan)(duan)(duan)器(qi)(qi)注意(yi)事(shi)项(xiang)(xiang)编辑鉴于(yu)熔(rong)(rong)(rong)(rong)(rong)(rong)(rong)(rong)断(duan)(duan)(duan)(duan)(duan)(duan)器(qi)(qi)的(de)(de)短路(lu)保(bao)(bao)护性(xing)能，它应用于(yu)高低压(ya)(ya)(ya)(ya)配电(dian)(dian)(dian)(dian)系统(tong)和控制系统(tong)以及用电(dian)(dian)(dian)(dian)设(she)备中(zhong)(zhong)，作为短路(lu)和过电(dian)(dian)(dian)(dian)流(liu)的(de)(de)保(bao)(bao)护器(qi)(qi)，是(shi)应用普(pu)遍也重(zhong)要(yao)(yao)的(de)(de)保(bao)(bao)护器(qi)(qi)件之一(yi)。在(zai)应用中(zhong)(zhong)要(yao)(yao)重(zhong)视(shi)熔(rong)(rong)(rong)(rong)(rong)(rong)(rong)(rong)断(duan)(duan)(duan)(duan)(duan)(duan)器(qi)(qi)的(de)(de)使(shi)用注意(yi)事(shi)项(xiang)(xiang)、日常巡视(shi)检(jian)查(cha)及维修保(bao)(bao)养。熔(rong)(rong)(rong)(rong)(rong)(rong)(rong)(rong)断(duan)(duan)(duan)(duan)(duan)(duan)器(qi)(qi)使(shi)用注意(yi)事(shi)项(xiang)(xiang)：1、熔(rong)(rong)(rong)(rong)(rong)(rong)(rong)(rong)断(duan)(duan)(duan)(duan)(duan)(duan)器(qi)(qi)的(de)(de)保(bao)(bao)护特(te)性(xing)应与被保(bao)(bao)护对象的(de)(de)过载(zai)(zai)特(te)性(xing)相(xiang)适(shi)应，考(kao)虑(lv)到可能出现(xian)的(de)(de)短路(lu)电(dian)(dian)(dian)(dian)流(liu)，选用相(xiang)应分断(duan)(duan)(duan)(duan)(duan)(duan)能力(li)的(de)(de)熔(rong)(rong)(rong)(rong)(rong)(rong)(rong)(rong)断(duan)(duan)(duan)(duan)(duan)(duan)器(qi)(qi)；2、熔(rong)(rong)(rong)(rong)(rong)(rong)(rong)(rong)断(duan)(duan)(duan)(duan)(duan)(duan)器(qi)(qi)的(de)(de)额(e)(e)定(ding)电(dian)(dian)(dian)(dian)压(ya)(ya)(ya)(ya)要(yao)(yao)适(shi)应线(xian)路(lu)电(dian)(dian)(dian)(dian)压(ya)(ya)(ya)(ya)等(deng)级，熔(rong)(rong)(rong)(rong)(rong)(rong)(rong)(rong)断(duan)(duan)(duan)(duan)(duan)(duan)器(qi)(qi)的(de)(de)额(e)(e)定(ding)电(dian)(dian)(dian)(dian)流(liu)要(yao)(yao)大于(yu)或等(deng)于(yu)熔(rong)(rong)(rong)(rong)(rong)(rong)(rong)(rong)体(ti)(ti)(ti)(ti)额(e)(e)定(ding)电(dian)(dian)(dian)(dian)流(liu)；3、线(xian)路(lu)中(zhong)(zhong)各级熔(rong)(rong)(rong)(rong)(rong)(rong)(rong)(rong)断(duan)(duan)(duan)(duan)(duan)(duan)器(qi)(qi)熔(rong)(rong)(rong)(rong)(rong)(rong)(rong)(rong)体(ti)(ti)(ti)(ti)额(e)(e)定(ding)电(dian)(dian)(dian)(dian)流(liu)要(yao)(yao)相(xiang)应配合，保(bao)(bao)持前一(yi)级熔(rong)(rong)(rong)(rong)(rong)(rong)(rong)(rong)体(ti)(ti)(ti)(ti)额(e)(e)定(ding)电(dian)(dian)(dian)(dian)流(liu)必须大于(yu)下一(yi)级熔(rong)(rong)(rong)(rong)(rong)(rong)(rong)(rong)体(ti)(ti)(ti)(ti)额(e)(e)定(ding)电(dian)(dian)(dian)(dian)流(liu)；4、熔(rong)(rong)(rong)(rong)(rong)(rong)(rong)(rong)断(duan)(duan)(duan)(duan)(duan)(duan)器(qi)(qi)的(de)(de)熔(rong)(rong)(rong)(rong)(rong)(rong)(rong)(rong)体(ti)(ti)(ti)(ti)要(yao)(yao)按要(yao)(yao)求使(shi)用相(xiang)配合的(de)(de)熔(rong)(rong)(rong)(rong)(rong)(rong)(rong)(rong)体(ti)(ti)(ti)(ti)，不允许随意(yi)加大熔(rong)(rong)(rong)(rong)(rong)(rong)(rong)(rong)体(ti)(ti)(ti)(ti)或用其他导(dao)(dao)体(ti)(ti)(ti)(ti)代替熔(rong)(rong)(rong)(rong)(rong)(rong)(rong)(rong)体(ti)(ti)(ti)(ti)。广东品(pin)质SIEMENS西门子熔(rong)(rong)(rong)(rong)(rong)(rong)(rong)(rong)断(duan)(duan)(duan)(duan)(duan)(duan)器(qi)(qi)现(xian)货封(feng)闭式熔(rong)(rong)(rong)(rong)(rong)(rong)(rong)(rong)断(duan)(duan)(duan)(duan)(duan)(duan)器(qi)(qi)：封(feng)闭式熔(rong)(rong)(rong)(rong)(rong)(rong)(rong)(rong)断(duan)(duan)(duan)(duan)(duan)(duan)器(qi)(qi)分有(you)填料(liao)熔(rong)(rong)(rong)(rong)(rong)(rong)(rong)(rong)断(duan)(duan)(duan)(duan)(duan)(duan)器(qi)(qi)和无填料(liao)熔(rong)(rong)(rong)(rong)(rong)(rong)(rong)(rong)断(duan)(duan)(duan)(duan)(duan)(duan)器(qi)(qi)两种，如图(tu)(tu)3和图(tu)(tu)4所(suo)示。

主要分(fen)(fen)类/熔(rong)(rong)(rong)(rong)(rong)(rong)(rong)(rong)(rong)断(duan)(duan)(duan)(duan)(duan)(duan)(duan)(duan)器(qi)(qi)(qi)(qi)(qi)(qi)编辑熔(rong)(rong)(rong)(rong)(rong)(rong)(rong)(rong)(rong)断(duan)(duan)(duan)(duan)(duan)(duan)(duan)(duan)器(qi)(qi)(qi)(qi)(qi)(qi)（图8）熔(rong)(rong)(rong)(rong)(rong)(rong)(rong)(rong)(rong)断(duan)(duan)(duan)(duan)(duan)(duan)(duan)(duan)器(qi)(qi)(qi)(qi)(qi)(qi)根据(ju)(ju)使用(yong)(yong)(yong)电(dian)(dian)(dian)(dian)压可(ke)分(fen)(fen)为高(gao)(gao)压熔(rong)(rong)(rong)(rong)(rong)(rong)(rong)(rong)(rong)断(duan)(duan)(duan)(duan)(duan)(duan)(duan)(duan)器(qi)(qi)(qi)(qi)(qi)(qi)和(he)低(di)压熔(rong)(rong)(rong)(rong)(rong)(rong)(rong)(rong)(rong)断(duan)(duan)(duan)(duan)(duan)(duan)(duan)(duan)器(qi)(qi)(qi)(qi)(qi)(qi)。根据(ju)(ju)保护(hu)(hu)对象(xiang)可(ke)分(fen)(fen)为保护(hu)(hu)变(bian)压器(qi)(qi)(qi)(qi)(qi)(qi)用(yong)(yong)(yong)和(he)一般电(dian)(dian)(dian)(dian)气设(she)备用(yong)(yong)(yong)的(de)(de)(de)熔(rong)(rong)(rong)(rong)(rong)(rong)(rong)(rong)(rong)断(duan)(duan)(duan)(duan)(duan)(duan)(duan)(duan)器(qi)(qi)(qi)(qi)(qi)(qi)、保护(hu)(hu)电(dian)(dian)(dian)(dian)压互感器(qi)(qi)(qi)(qi)(qi)(qi)的(de)(de)(de)熔(rong)(rong)(rong)(rong)(rong)(rong)(rong)(rong)(rong)断(duan)(duan)(duan)(duan)(duan)(duan)(duan)(duan)器(qi)(qi)(qi)(qi)(qi)(qi)、保护(hu)(hu)电(dian)(dian)(dian)(dian)力电(dian)(dian)(dian)(dian)容器(qi)(qi)(qi)(qi)(qi)(qi)的(de)(de)(de)熔(rong)(rong)(rong)(rong)(rong)(rong)(rong)(rong)(rong)断(duan)(duan)(duan)(duan)(duan)(duan)(duan)(duan)器(qi)(qi)(qi)(qi)(qi)(qi)、保护(hu)(hu)半(ban)导体(ti)(ti)元件(jian)的(de)(de)(de)熔(rong)(rong)(rong)(rong)(rong)(rong)(rong)(rong)(rong)断(duan)(duan)(duan)(duan)(duan)(duan)(duan)(duan)器(qi)(qi)(qi)(qi)(qi)(qi)、保护(hu)(hu)电(dian)(dian)(dian)(dian)动机的(de)(de)(de)熔(rong)(rong)(rong)(rong)(rong)(rong)(rong)(rong)(rong)断(duan)(duan)(duan)(duan)(duan)(duan)(duan)(duan)器(qi)(qi)(qi)(qi)(qi)(qi)和(he)保护(hu)(hu)家用(yong)(yong)(yong)电(dian)(dian)(dian)(dian)器(qi)(qi)(qi)(qi)(qi)(qi)的(de)(de)(de)熔(rong)(rong)(rong)(rong)(rong)(rong)(rong)(rong)(rong)断(duan)(duan)(duan)(duan)(duan)(duan)(duan)(duan)器(qi)(qi)(qi)(qi)(qi)(qi)等。根据(ju)(ju)结(jie)构可(ke)分(fen)(fen)为敞开(kai)式(shi)(shi)、半(ban)封闭式(shi)(shi)、管(guan)(guan)式(shi)(shi)和(he)喷射(she)式(shi)(shi)熔(rong)(rong)(rong)(rong)(rong)(rong)(rong)(rong)(rong)断(duan)(duan)(duan)(duan)(duan)(duan)(duan)(duan)器(qi)(qi)(qi)(qi)(qi)(qi)。敞开(kai)式(shi)(shi)熔(rong)(rong)(rong)(rong)(rong)(rong)(rong)(rong)(rong)断(duan)(duan)(duan)(duan)(duan)(duan)(duan)(duan)器(qi)(qi)(qi)(qi)(qi)(qi)结(jie)构简单(dan),熔(rong)(rong)(rong)(rong)(rong)(rong)(rong)(rong)(rong)体(ti)(ti)完全(quan)暴露(lu)于(yu)空(kong)(kong)气中,由(you)瓷(ci)柱(zhu)作(zuo)支撑，没(mei)有(you)支座(zuo)，适(shi)于(yu)低(di)压户外使用(yong)(yong)(yong)。分(fen)(fen)断(duan)(duan)(duan)(duan)(duan)(duan)(duan)(duan)电(dian)(dian)(dian)(dian)流时在(zai)大气中产(chan)(chan)(chan)生较大的(de)(de)(de)声(sheng)光。半(ban)封闭式(shi)(shi)熔(rong)(rong)(rong)(rong)(rong)(rong)(rong)(rong)(rong)断(duan)(duan)(duan)(duan)(duan)(duan)(duan)(duan)器(qi)(qi)(qi)(qi)(qi)(qi)的(de)(de)(de)熔(rong)(rong)(rong)(rong)(rong)(rong)(rong)(rong)(rong)体(ti)(ti)装(zhuang)在(zai)瓷(ci)架上，插入两端带有(you)金属插座(zuo)的(de)(de)(de)瓷(ci)盒中,适(shi)于(yu)低(di)压户内(nei)(nei)使用(yong)(yong)(yong)。分(fen)(fen)断(duan)(duan)(duan)(duan)(duan)(duan)(duan)(duan)电(dian)(dian)(dian)(dian)流时,所产(chan)(chan)(chan)生的(de)(de)(de)声(sheng)光被瓷(ci)盒挡住。管(guan)(guan)式(shi)(shi)熔(rong)(rong)(rong)(rong)(rong)(rong)(rong)(rong)(rong)断(duan)(duan)(duan)(duan)(duan)(duan)(duan)(duan)器(qi)(qi)(qi)(qi)(qi)(qi)的(de)(de)(de)熔(rong)(rong)(rong)(rong)(rong)(rong)(rong)(rong)(rong)体(ti)(ti)装(zhuang)在(zai)熔(rong)(rong)(rong)(rong)(rong)(rong)(rong)(rong)(rong)断(duan)(duan)(duan)(duan)(duan)(duan)(duan)(duan)体(ti)(ti)内(nei)(nei)。然后插在(zai)支座(zuo)或(huo)直接(jie)连在(zai)电(dian)(dian)(dian)(dian)路上使用(yong)(yong)(yong)。熔(rong)(rong)(rong)(rong)(rong)(rong)(rong)(rong)(rong)断(duan)(duan)(duan)(duan)(duan)(duan)(duan)(duan)体(ti)(ti)是(shi)两端套(tao)有(you)金属帽或(huo)带有(you)触刀的(de)(de)(de)完全(quan)密(mi)封的(de)(de)(de)绝(jue)缘管(guan)(guan)。这(zhei)种(zhong)熔(rong)(rong)(rong)(rong)(rong)(rong)(rong)(rong)(rong)断(duan)(duan)(duan)(duan)(duan)(duan)(duan)(duan)器(qi)(qi)(qi)(qi)(qi)(qi)的(de)(de)(de)绝(jue)缘管(guan)(guan)内(nei)(nei)若充(chong)以石英砂，则分(fen)(fen)断(duan)(duan)(duan)(duan)(duan)(duan)(duan)(duan)电(dian)(dian)(dian)(dian)流时具有(you)限(xian)流作(zuo)用(yong)(yong)(yong)，可(ke)提高(gao)(gao)分(fen)(fen)断(duan)(duan)(duan)(duan)(duan)(duan)(duan)(duan)能(neng)力,故又称(cheng)作(zuo)高(gao)(gao)分(fen)(fen)断(duan)(duan)(duan)(duan)(duan)(duan)(duan)(duan)能(neng)力熔(rong)(rong)(rong)(rong)(rong)(rong)(rong)(rong)(rong)断(duan)(duan)(duan)(duan)(duan)(duan)(duan)(duan)器(qi)(qi)(qi)(qi)(qi)(qi)。若管(guan)(guan)内(nei)(nei)抽真空(kong)(kong),则称(cheng)作(zuo)真空(kong)(kong)熔(rong)(rong)(rong)(rong)(rong)(rong)(rong)(rong)(rong)断(duan)(duan)(duan)(duan)(duan)(duan)(duan)(duan)器(qi)(qi)(qi)(qi)(qi)(qi)。若管(guan)(guan)内(nei)(nei)充(chong)以SF6气体(ti)(ti)，则称(cheng)作(zuo)SF6熔(rong)(rong)(rong)(rong)(rong)(rong)(rong)(rong)(rong)断(duan)(duan)(duan)(duan)(duan)(duan)(duan)(duan)器(qi)(qi)(qi)(qi)(qi)(qi)，其目的(de)(de)(de)是(shi)改(gai)善灭弧(hu)性(xing)能(neng)。由(you)于(yu)石英砂,真空(kong)(kong)和(he)SF6气体(ti)(ti)均具有(you)较好的(de)(de)(de)绝(jue)缘性(xing)能(neng)，故这(zhei)种(zhong)熔(rong)(rong)(rong)(rong)(rong)(rong)(rong)(rong)(rong)断(duan)(duan)(duan)(duan)(duan)(duan)(duan)(duan)器(qi)(qi)(qi)(qi)(qi)(qi)不但(dan)适(shi)用(yong)(yong)(yong)于(yu)低(di)压也适(shi)用(yong)(yong)(yong)于(yu)高(gao)(gao)压。喷射(she)式(shi)(shi)熔(rong)(rong)(rong)(rong)(rong)(rong)(rong)(rong)(rong)断(duan)(duan)(duan)(duan)(duan)(duan)(duan)(duan)器(qi)(qi)(qi)(qi)(qi)(qi)是(shi)将熔(rong)(rong)(rong)(rong)(rong)(rong)(rong)(rong)(rong)体(ti)(ti)装(zhuang)在(zai)由(you)固体(ti)(ti)产(chan)(chan)(chan)气材(cai)料制成(cheng)的(de)(de)(de)绝(jue)缘管(guan)(guan)内(nei)(nei)。

小(xiao)(xiao)(xiao)分(fen)(fen)断(duan)电(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)小(xiao)(xiao)(xiao)分(fen)(fen)断(duan)电(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)通常也叫做“额(e)定(ding)(ding)小(xiao)(xiao)(xiao)分(fen)(fen)断(duan)电(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)”，该(gai)值(zhi)(zhi)对(dui)于(yu)后(hou)备熔(rong)(rong)断(duan)器(qi)(qi)(qi)(qi)必(bi)须定(ding)(ding)义，从(cong)该(gai)电(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)开始，熔(rong)(rong)断(duan)器(qi)(qi)(qi)(qi)能(neng)够切断(duan)故障电(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)。功率损耗(hao)高(gao)压(ya)(ya)(ya)(ya)熔(rong)(rong)断(duan)器(qi)(qi)(qi)(qi)的(de)(de)(de)(de)功率损耗(hao)是根据(ju)其额(e)定(ding)(ding)电(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)而定(ding)(ding)的(de)(de)(de)(de)。使(shi)(shi)用高(gao)压(ya)(ya)(ya)(ya)熔(rong)(rong)断(duan)器(qi)(qi)(qi)(qi)保(bao)护时(shi)，工(gong)作电(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)一(yi)般(ban)只是额(e)定(ding)(ding)电(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)的(de)(de)(de)(de)二(er)分(fen)(fen)之(zhi)(zhi)一(yi)，根据(ju)物理学原(yuan)理，实(shi)际的(de)(de)(de)(de)功率损耗(hao)小(xiao)(xiao)(xiao)于(yu)技(ji)术(shu)参数表中(zhong)后(hou)备高(gao)压(ya)(ya)(ya)(ya)熔(rong)(rong)断(duan)器(qi)(qi)(qi)(qi)的(de)(de)(de)(de)功率损耗(hao)值(zhi)(zhi)的(de)(de)(de)(de)四(si)分(fen)(fen)之(zhi)(zhi)一(yi)。电(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)限(xian)制短路(lu)电(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)很高(gao)时(shi)，高(gao)压(ya)(ya)(ya)(ya)熔(rong)(rong)断(duan)器(qi)(qi)(qi)(qi)能(neng)在(zai)(zai)几毫秒之(zhi)(zhi)内切断(duan)电(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)。这说明电(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)在(zai)(zai)未达(da)到正弦曲线的(de)(de)(de)(de)峰(feng)值(zhi)(zhi)之(zhi)(zhi)前就(jiu)被切断(duan)了，这是一(yi)个显着的(de)(de)(de)(de)优势，机械开关(guan)则需要(yao)更长(zhang)的(de)(de)(de)(de)时(shi)间来开启并(bing)切断(duan)电(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)。操(cao)作电(dian)(dian)(dian)(dian)(dian)(dian)压(ya)(ya)(ya)(ya)由于(yu)高(gao)压(ya)(ya)(ya)(ya)熔(rong)(rong)断(duan)器(qi)(qi)(qi)(qi)起到限(xian)流(liu)(liu)(liu)(liu)(liu)(liu)作用，短路(lu)电(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)在(zai)(zai)上(shang)升时(shi)就(jiu)应(ying)该(gai)被限(xian)制并(bing)且减弱，这就(jiu)要(yao)求一(yi)个高(gao)于(yu)系统电(dian)(dian)(dian)(dian)(dian)(dian)压(ya)(ya)(ya)(ya)的(de)(de)(de)(de)操(cao)作电(dian)(dian)(dian)(dian)(dian)(dian)压(ya)(ya)(ya)(ya)来迫(po)使(shi)(shi)电(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)归零。该(gai)操(cao)作电(dian)(dian)(dian)(dian)(dian)(dian)压(ya)(ya)(ya)(ya)须在(zai)(zai)允(yun)许的(de)(de)(de)(de)范围内，不(bu)(bu)超过大(da)(da)额(e)定(ding)(ding)电(dian)(dian)(dian)(dian)(dian)(dian)压(ya)(ya)(ya)(ya)峰(feng)值(zhi)(zhi)的(de)(de)(de)(de)。高(gao)压(ya)(ya)(ya)(ya)熔(rong)(rong)断(duan)器(qi)(qi)(qi)(qi)的(de)(de)(de)(de)分(fen)(fen)类(lei)(lei)在(zai)(zai)3～35kV的(de)(de)(de)(de)电(dian)(dian)(dian)(dian)(dian)(dian)站和(he)变电(dian)(dian)(dian)(dian)(dian)(dian)所常用的(de)(de)(de)(de)高(gao)压(ya)(ya)(ya)(ya)熔(rong)(rong)断(duan)器(qi)(qi)(qi)(qi)有(you)两大(da)(da)类(lei)(lei)：一(yi)类(lei)(lei)是户(hu)内高(gao)压(ya)(ya)(ya)(ya)限(xian)流(liu)(liu)(liu)(liu)(liu)(liu)熔(rong)(rong)断(duan)器(qi)(qi)(qi)(qi)，额(e)定(ding)(ding)电(dian)(dian)(dian)(dian)(dian)(dian)压(ya)(ya)(ya)(ya)能(neng)达(da)，常用的(de)(de)(de)(de)型号(hao)有(you)RN1、RN3、RN5、XRNM1、XRNT1、XRNT2、XRNT3型，主要(yao)用于(yu)保(bao)护电(dian)(dian)(dian)(dian)(dian)(dian)力(li)(li)线路(lu)、电(dian)(dian)(dian)(dian)(dian)(dian)力(li)(li)变压(ya)(ya)(ya)(ya)器(qi)(qi)(qi)(qi)和(he)电(dian)(dian)(dian)(dian)(dian)(dian)力(li)(li)电(dian)(dian)(dian)(dian)(dian)(dian)容器(qi)(qi)(qi)(qi)等(deng)设备的(de)(de)(de)(de)过载和(he)短路(lu);RN2和(he)RN4型额(e)定(ding)(ding)电(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)均为，为保(bao)护电(dian)(dian)(dian)(dian)(dian)(dian)压(ya)(ya)(ya)(ya)互感器(qi)(qi)(qi)(qi)的(de)(de)(de)(de)熔(rong)(rong)断(duan)器(qi)(qi)(qi)(qi)。另一(yi)类(lei)(lei)是户(hu)外高(gao)压(ya)(ya)(ya)(ya)喷(pen)射(she)式熔(rong)(rong)断(duan)器(qi)(qi)(qi)(qi)，此类(lei)(lei)熔(rong)(rong)断(duan)器(qi)(qi)(qi)(qi)在(zai)(zai)熔(rong)(rong)体熔(rong)(rong)断(duan)产生电(dian)(dian)(dian)(dian)(dian)(dian)弧时(shi)。熔(rong)(rong)断(duan)器(qi)(qi)(qi)(qi)温度就(jiu)不(bu)(bu)会(hui)上(shang)升到熔(rong)(rong)点，熔(rong)(rong)断(duan)器(qi)(qi)(qi)(qi)甚至不(bu)(bu)会(hui)熔(rong)(rong)断(duan)。

一般(ban)用(yong)(yong)(yong)途(tu)熔(rong)(rong)(rong)(rong)断(duan)(duan)(duan)(duan)(duan)器(qi)(qi)(qi)(qi)(qi)(qi)(qi)(qi)(qi)的(de)分(fen)(fen)(fen)断(duan)(duan)(duan)(duan)(duan)电(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)范(fan)围(wei)指从(cong)过(guo)载(zai)电(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)大(da)(da)于(yu)(yu)额定(ding)电(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)～2倍起，到大(da)(da)分(fen)(fen)(fen)断(duan)(duan)(duan)(duan)(duan)电(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)的(de)范(fan)围(wei)。这种(zhong)(zhong)熔(rong)(rong)(rong)(rong)断(duan)(duan)(duan)(duan)(duan)器(qi)(qi)(qi)(qi)(qi)(qi)(qi)(qi)(qi)主(zhu)要(yao)用(yong)(yong)(yong)于(yu)(yu)保(bao)(bao)护(hu)(hu)电(dian)(dian)(dian)(dian)(dian)力变压器(qi)(qi)(qi)(qi)(qi)(qi)(qi)(qi)(qi)和一般(ban)电(dian)(dian)(dian)(dian)(dian)气设(she)备。后备熔(rong)(rong)(rong)(rong)断(duan)(duan)(duan)(duan)(duan)器(qi)(qi)(qi)(qi)(qi)(qi)(qi)(qi)(qi)的(de)分(fen)(fen)(fen)断(duan)(duan)(duan)(duan)(duan)电(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)范(fan)围(wei)指从(cong)过(guo)载(zai)电(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)大(da)(da)于(yu)(yu)额定(ding)电(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)4～7倍起分(fen)(fen)(fen)断(duan)(duan)(duan)(duan)(duan)电(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)的(de)范(fan)围(wei)。这种(zhong)(zhong)熔(rong)(rong)(rong)(rong)断(duan)(duan)(duan)(duan)(duan)器(qi)(qi)(qi)(qi)(qi)(qi)(qi)(qi)(qi)常(chang)与接触器(qi)(qi)(qi)(qi)(qi)(qi)(qi)(qi)(qi)串联使用(yong)(yong)(yong)，在过(guo)载(zai)电(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)小(xiao)于(yu)(yu)额定(ding)电(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)4～7倍的(de)范(fan)围(wei)时，由接触器(qi)(qi)(qi)(qi)(qi)(qi)(qi)(qi)(qi)来实现(xian)分(fen)(fen)(fen)断(duan)(duan)(duan)(duan)(duan)保(bao)(bao)护(hu)(hu)。主(zhu)要(yao)用(yong)(yong)(yong)于(yu)(yu)保(bao)(bao)护(hu)(hu)电(dian)(dian)(dian)(dian)(dian)动(dong)机。随着工(gong)业发展(zhan)的(de)需要(yao)，还制造出适于(yu)(yu)各种(zhong)(zhong)不同要(yao)求的(de)特殊熔(rong)(rong)(rong)(rong)断(duan)(duan)(duan)(duan)(duan)器(qi)(qi)(qi)(qi)(qi)(qi)(qi)(qi)(qi)，如电(dian)(dian)(dian)(dian)(dian)子(zi)熔(rong)(rong)(rong)(rong)断(duan)(duan)(duan)(duan)(duan)器(qi)(qi)(qi)(qi)(qi)(qi)(qi)(qi)(qi)、热熔(rong)(rong)(rong)(rong)断(duan)(duan)(duan)(duan)(duan)器(qi)(qi)(qi)(qi)(qi)(qi)(qi)(qi)(qi)和自(zi)复熔(rong)(rong)(rong)(rong)断(duan)(duan)(duan)(duan)(duan)器(qi)(qi)(qi)(qi)(qi)(qi)(qi)(qi)(qi)等(deng)。熔(rong)(rong)(rong)(rong)断(duan)(duan)(duan)(duan)(duan)器(qi)(qi)(qi)(qi)(qi)(qi)(qi)(qi)(qi)级(ji)间配(pei)合(he)(he)编(bian)辑(ji)为防(fang)止(zhi)发生越级(ji)熔(rong)(rong)(rong)(rong)断(duan)(duan)(duan)(duan)(duan)、扩大(da)(da)事(shi)故范(fan)围(wei)，上、下级(ji)（即供(gong)(gong)电(dian)(dian)(dian)(dian)(dian)干、支线）线路(lu)的(de)熔(rong)(rong)(rong)(rong)断(duan)(duan)(duan)(duan)(duan)器(qi)(qi)(qi)(qi)(qi)(qi)(qi)(qi)(qi)间应(ying)有良好配(pei)合(he)(he)。选(xuan)用(yong)(yong)(yong)时，应(ying)使上级(ji)（供(gong)(gong)电(dian)(dian)(dian)(dian)(dian)干线）熔(rong)(rong)(rong)(rong)断(duan)(duan)(duan)(duan)(duan)器(qi)(qi)(qi)(qi)(qi)(qi)(qi)(qi)(qi)的(de)熔(rong)(rong)(rong)(rong)体(ti)(ti)额定(ding)电(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)比(bi)下级(ji)（供(gong)(gong)电(dian)(dian)(dian)(dian)(dian)支线）的(de)大(da)(da)1～2个级(ji)差。常(chang)用(yong)(yong)(yong)的(de)熔(rong)(rong)(rong)(rong)断(duan)(duan)(duan)(duan)(duan)器(qi)(qi)(qi)(qi)(qi)(qi)(qi)(qi)(qi)有管式(shi)(shi)熔(rong)(rong)(rong)(rong)断(duan)(duan)(duan)(duan)(duan)器(qi)(qi)(qi)(qi)(qi)(qi)(qi)(qi)(qi)R1系列、螺旋(xuan)式(shi)(shi)熔(rong)(rong)(rong)(rong)断(duan)(duan)(duan)(duan)(duan)器(qi)(qi)(qi)(qi)(qi)(qi)(qi)(qi)(qi)RLl系列、填(tian)料封闭式(shi)(shi)熔(rong)(rong)(rong)(rong)断(duan)(duan)(duan)(duan)(duan)器(qi)(qi)(qi)(qi)(qi)(qi)(qi)(qi)(qi)RT0系列及(ji)快速熔(rong)(rong)(rong)(rong)断(duan)(duan)(duan)(duan)(duan)器(qi)(qi)(qi)(qi)(qi)(qi)(qi)(qi)(qi)RSO、RS3系列等(deng)。熔(rong)(rong)(rong)(rong)断(duan)(duan)(duan)(duan)(duan)器(qi)(qi)(qi)(qi)(qi)(qi)(qi)(qi)(qi)使用(yong)(yong)(yong)维护(hu)(hu)编(bian)辑(ji)低压配(pei)电(dian)(dian)(dian)(dian)(dian)系统中熔(rong)(rong)(rong)(rong)断(duan)(duan)(duan)(duan)(duan)器(qi)(qi)(qi)(qi)(qi)(qi)(qi)(qi)(qi)是起安(an)全保(bao)(bao)护(hu)(hu)作(zuo)用(yong)(yong)(yong)的(de)一种(zhong)(zhong)电(dian)(dian)(dian)(dian)(dian)器(qi)(qi)(qi)(qi)(qi)(qi)(qi)(qi)(qi)，熔(rong)(rong)(rong)(rong)断(duan)(duan)(duan)(duan)(duan)器(qi)(qi)(qi)(qi)(qi)(qi)(qi)(qi)(qi)应(ying)用(yong)(yong)(yong)于(yu)(yu)电(dian)(dian)(dian)(dian)(dian)网保(bao)(bao)护(hu)(hu)和用(yong)(yong)(yong)电(dian)(dian)(dian)(dian)(dian)设(she)备保(bao)(bao)护(hu)(hu)，当电(dian)(dian)(dian)(dian)(dian)网或用(yong)(yong)(yong)电(dian)(dian)(dian)(dian)(dian)设(she)备发生短路(lu)故障或过(guo)载(zai)时，可自(zi)动(dong)切(qie)断(duan)(duan)(duan)(duan)(duan)电(dian)(dian)(dian)(dian)(dian)路(lu)，避免电(dian)(dian)(dian)(dian)(dian)器(qi)(qi)(qi)(qi)(qi)(qi)(qi)(qi)(qi)设(she)备损(sun)坏(huai)，防(fang)止(zhi)事(shi)故蔓延。熔(rong)(rong)(rong)(rong)断(duan)(duan)(duan)(duan)(duan)器(qi)(qi)(qi)(qi)(qi)(qi)(qi)(qi)(qi)由绝缘底座（或支持件）、触头、熔(rong)(rong)(rong)(rong)体(ti)(ti)等(deng)组成，熔(rong)(rong)(rong)(rong)体(ti)(ti)是熔(rong)(rong)(rong)(rong)断(duan)(duan)(duan)(duan)(duan)器(qi)(qi)(qi)(qi)(qi)(qi)(qi)(qi)(qi)的(de)主(zhu)要(yao)工(gong)作(zuo)部分(fen)(fen)(fen)。熔(rong)(rong)(rong)(rong)体(ti)(ti)的(de)形状(zhuang)分(fen)(fen)(fen)为丝状(zhuang)和带状(zhuang)两(liang)种(zhong)(zhong)。改(gai)变变截面的(de)形状(zhuang)可改(gai)变熔(rong)(rong)(rong)(rong)断(duan)(duan)(duan)(duan)(duan)器(qi)(qi)(qi)(qi)(qi)(qi)(qi)(qi)(qi)的(de)熔(rong)(rong)(rong)(rong)断(duan)(duan)(duan)(duan)(duan)特性。广东品质SIEMENS西门子(zi)熔(rong)(rong)(rong)(rong)断(duan)(duan)(duan)(duan)(duan)器(qi)(qi)(qi)(qi)(qi)(qi)(qi)(qi)(qi)现(xian)货

熔断(duan)器(qi)广(guang)泛应用于高低压配电(dian)系(xi)统(tong)和控制系(xi)统(tong)以及用电(dian)设(she)备中。广(guang)东品质(zhi)SIEMENS西(xi)门子熔断(duan)器(qi)现货

所产(chan)生的(de)声(sheng)(sheng)光被(bei)瓷盒挡住。管(guan)(guan)式熔(rong)(rong)(rong)(rong)断(duan)(duan)(duan)(duan)器(qi)(qi)(qi)(qi)的(de)熔(rong)(rong)(rong)(rong)体(ti)(ti)装(zhuang)在(zai)熔(rong)(rong)(rong)(rong)断(duan)(duan)(duan)(duan)体(ti)(ti)内。然后(hou)插(cha)在(zai)支座或直接(jie)连在(zai)电(dian)(dian)(dian)路(lu)上(shang)(shang)使(shi)用(yong)。熔(rong)(rong)(rong)(rong)断(duan)(duan)(duan)(duan)体(ti)(ti)是(shi)两(liang)端(duan)套有金(jin)属帽或带有触刀(dao)的(de)完全(quan)密封的(de)绝(jue)缘管(guan)(guan)。这种熔(rong)(rong)(rong)(rong)断(duan)(duan)(duan)(duan)器(qi)(qi)(qi)(qi)的(de)绝(jue)缘管(guan)(guan)内若(ruo)充以(yi)石(shi)英砂(sha)，则(ze)分(fen)断(duan)(duan)(duan)(duan)电(dian)(dian)(dian)流(liu)时具有限(xian)流(liu)作(zuo)用(yong)，可提高(gao)(gao)分(fen)断(duan)(duan)(duan)(duan)能(neng)(neng)力,故(gu)又称作(zuo)高(gao)(gao)分(fen)断(duan)(duan)(duan)(duan)能(neng)(neng)力熔(rong)(rong)(rong)(rong)断(duan)(duan)(duan)(duan)器(qi)(qi)(qi)(qi)。若(ruo)管(guan)(guan)内抽(chou)真空,则(ze)称作(zuo)真空熔(rong)(rong)(rong)(rong)断(duan)(duan)(duan)(duan)器(qi)(qi)(qi)(qi)。若(ruo)管(guan)(guan)内充以(yi)SF6气(qi)(qi)(qi)(qi)体(ti)(ti)，则(ze)称作(zuo)SF6熔(rong)(rong)(rong)(rong)断(duan)(duan)(duan)(duan)器(qi)(qi)(qi)(qi)，其目的(de)是(shi)改(gai)善(shan)灭弧(hu)性(xing)能(neng)(neng)。由于石(shi)英砂(sha),真空和(he)SF6气(qi)(qi)(qi)(qi)体(ti)(ti)均具有较好的(de)绝(jue)缘性(xing)能(neng)(neng)，故(gu)这种熔(rong)(rong)(rong)(rong)断(duan)(duan)(duan)(duan)器(qi)(qi)(qi)(qi)不但适用(yong)于低压也适用(yong)于高(gao)(gao)压。喷射式熔(rong)(rong)(rong)(rong)断(duan)(duan)(duan)(duan)器(qi)(qi)(qi)(qi)是(shi)将熔(rong)(rong)(rong)(rong)体(ti)(ti)装(zhuang)在(zai)由固(gu)体(ti)(ti)产(chan)气(qi)(qi)(qi)(qi)材(cai)料(liao)(liao)制成(cheng)的(de)绝(jue)缘管(guan)(guan)内。固(gu)体(ti)(ti)产(chan)气(qi)(qi)(qi)(qi)材(cai)料(liao)(liao)可采用(yong)电(dian)(dian)(dian)工反白(bai)纸板或有机玻璃材(cai)料(liao)(liao)等。当短路(lu)电(dian)(dian)(dian)流(liu)通过(guo)熔(rong)(rong)(rong)(rong)体(ti)(ti)时，熔(rong)(rong)(rong)(rong)体(ti)(ti)随即熔(rong)(rong)(rong)(rong)断(duan)(duan)(duan)(duan)产(chan)生电(dian)(dian)(dian)弧(hu)，高(gao)(gao)温电(dian)(dian)(dian)弧(hu)使(shi)固(gu)体(ti)(ti)产(chan)气(qi)(qi)(qi)(qi)材(cai)料(liao)(liao)迅速(su)分(fen)解(jie)产(chan)生大(da)量高(gao)(gao)压气(qi)(qi)(qi)(qi)体(ti)(ti)，从而将电(dian)(dian)(dian)离的(de)气(qi)(qi)(qi)(qi)体(ti)(ti)带电(dian)(dian)(dian)弧(hu)在(zai)管(guan)(guan)子(zi)两(liang)端(duan)喷出，发(fa)出极大(da)的(de)声(sheng)(sheng)光，并在(zai)交流(liu)电(dian)(dian)(dian)流(liu)过(guo)零(ling)时熄灭电(dian)(dian)(dian)弧(hu)而分(fen)断(duan)(duan)(duan)(duan)电(dian)(dian)(dian)流(liu)。绝(jue)缘管(guan)(guan)通常(chang)是(shi)装(zhuang)在(zai)一个绝(jue)缘支架上(shang)(shang)，组成(cheng)熔(rong)(rong)(rong)(rong)断(duan)(duan)(duan)(duan)器(qi)(qi)(qi)(qi)整体(ti)(ti)。有时绝(jue)缘管(guan)(guan)上(shang)(shang)端(duan)做成(cheng)可活动式，在(zai)分(fen)断(duan)(duan)(duan)(duan)电(dian)(dian)(dian)流(liu)后(hou)随即脱开而跌落(luo)，此种喷射式熔(rong)(rong)(rong)(rong)断(duan)(duan)(duan)(duan)器(qi)(qi)(qi)(qi)俗称跌落(luo)熔(rong)(rong)(rong)(rong)断(duan)(duan)(duan)(duan)器(qi)(qi)(qi)(qi)。一般(ban)适用(yong)于电(dian)(dian)(dian)压高(gao)(gao)于6千伏(fu)的(de)户外(wai)场合。此外(wai)，熔(rong)(rong)(rong)(rong)断(duan)(duan)(duan)(duan)器(qi)(qi)(qi)(qi)根(gen)据分(fen)断(duan)(duan)(duan)(duan)电(dian)(dian)(dian)流(liu)范(fan)围还(hai)可分(fen)为一般(ban)用(yong)途熔(rong)(rong)(rong)(rong)断(duan)(duan)(duan)(duan)器(qi)(qi)(qi)(qi)，后(hou)备熔(rong)(rong)(rong)(rong)断(duan)(duan)(duan)(duan)器(qi)(qi)(qi)(qi)和(he)全(quan)范(fan)围熔(rong)(rong)(rong)(rong)断(duan)(duan)(duan)(duan)器(qi)(qi)(qi)(qi)。广东(dong)品(pin)质SIEMENS西(xi)门子(zi)熔(rong)(rong)(rong)(rong)断(duan)(duan)(duan)(duan)器(qi)(qi)(qi)(qi)现货

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