服務熱線
服務熱線
作(zuo)者:點(dian)擊數(shu):發布時間:2021-09-06
熔斷電阻器可分為可恢復式熔斷電阻器和一次性熔斷電阻器兩種。
1、可恢復(fu)式熔斷電阻器
可恢復式(shi)熔斷電阻(zu)器是將普通電阻(zu)器(或電阻(zu)絲)用低熔點焊料與彈簧(huang)式(shi)金屬(shu)片(pian)(或彈性金屬(shu)片(pian))串聯焊接在一(yi)起后,再密封在一(yi)個圓柱形或方形外(wai)殼(ke)中。外(wai)殼(ke)有(you)金屬(shu)和透(tou)明塑料等幾種。
在(zai)額(e)定電(dian)(dian)流內(nei),可恢復(fu)(fu)式熔(rong)斷(duan)(duan)電(dian)(dian)阻(zu)器(qi)起固定電(dian)(dian)阻(zu)器(qi)作用。當電(dian)(dian)路出現過電(dian)(dian)流時(shi),可恢復(fu)(fu)熔(rong)斷(duan)(duan)電(dian)(dian)阻(zu)器(qi)的(de)焊(han)點首先(xian)熔(rong)化(hua),使彈簧式金(jin)(jin)(jin)屬(shu)絲(或彈性金(jin)(jin)(jin)屬(shu)片)與電(dian)(dian)阻(zu)器(qi)斷(duan)(duan)開。在(zai)排除電(dian)(dian)路故障后,按(an)要求將電(dian)(dian)阻(zu)器(qi)與金(jin)(jin)(jin)屬(shu)絲(或金(jin)(jin)(jin)屬(shu)片)焊(han)好,即可恢復(fu)(fu)正(zheng)常使用。
2、一次(ci)性熔斷電阻器
一(yi)次(ci)性熔(rong)(rong)斷(duan)電(dian)阻(zu)(zu)(zu)器也稱不可恢(hui)復(fu)(fu)型熔(rong)(rong)斷(duan)電(dian)阻(zu)(zu)(zu)器,它在電(dian)路正常工(gong)作時起固定(ding)電(dian)阻(zu)(zu)(zu)器作用,當其(qi)工(gong)作電(dian)流超過額定(ding)電(dian)流時,熔(rong)(rong)斷(duan)電(dian)阻(zu)(zu)(zu)器將會(hui)像熔(rong)(rong)斷(duan)器一(yi)樣熔(rong)(rong)斷(duan),對(dui)電(dian)路進行保(bao)護,一(yi)次(ci)性熔(rong)(rong)斷(duan)電(dian)阻(zu)(zu)(zu)器熔(rong)(rong)斷(duan)后(hou),無法(fa)時行修(xiu)復(fu)(fu),只能更換新的熔(rong)(rong)斷(duan)電(dian)阻(zu)(zu)(zu)器。
一次性熔(rong)斷(duan)電阻(zu)(zu)器(qi)按(an)電阻(zu)(zu)體使用(yong)材料可分為線繞式熔(rong)斷(duan)電阻(zu)(zu)器(qi)和膜式熔(rong)斷(duan)電阻(zu)(zu)器(qi)。
1、線繞式熔斷(duan)電(dian)阻(zu)器 線繞式熔斷(duan)電(dian)阻(zu)器屬(shu)于功率型涂(tu)釉電(dian)阻(zu)器,其阻(zu)值較小,通常應用(yong)于工作電(dian)流較大的電(dian)路中(zhong)。
在制(zhi)作過(guo)程中,將功(gong)率型涂釉(you)電(dian)(dian)阻器的一部(bu)分(fen)用(yong)細線(xian)繞制(zhi)或(huo)裸露(lu)部(bu)分(fen)(不涂釉(you)質保(bao)護層),在被保(bao)護電(dian)(dian)路(lu)出現(xian)過(guo)電(dian)(dian)流故(gu)障時,電(dian)(dian)阻器的細線(xian)部(bu)分(fen)或(huo)裸露(lu)部(bu)分(fen)(不涂釉(you)部(bu)分(fen))將會因過(guo)熱而燒斷,對電(dian)(dian)路(lu)進行保(bao)護。
2、膜(mo)式熔(rong)(rong)斷(duan)(duan)電阻(zu)器(qi)(qi) 膜(mo)式熔(rong)(rong)斷(duan)(duan)電阻(zu)器(qi)(qi)是(shi)目前使用最多的熔(rong)(rong)斷(duan)(duan)電阻(zu)器(qi)(qi),它又分為(wei)碳膜(mo)熔(rong)(rong)斷(duan)(duan)電阻(zu)器(qi)(qi)、金(jin)屬(shu)膜(mo)熔(rong)(rong)斷(duan)(duan)電阻(zu)器(qi)(qi)和金(jin)屬(shu)氧化膜(mo)熔(rong)(rong)斷(duan)(duan)電阻(zu)器(qi)(qi)等(deng)多種。
文章源自:貼片電阻、熔斷電阻器、旺詮合金電阻、旺詮合金電阻代理商