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1、為什么有(you)時(shi)(shi)(shi)候(hou)貼(tie)片式保(bao)(bao)險(xian)絲(si)會(hui)變得(de)電(dian)(dian)(dian)阻(zu)很大(da)而(er)(er)不斷我們知(zhi)道(dao)管狀(zhuang)保(bao)(bao)險(xian)絲(si)的(de)(de)(de)(de)(de)(de)(de)(de)動(dong)作原理是：過電(dian)(dian)(dian)流(liu)使(shi)(shi)(shi)得(de)熔(rong)體(ti)(ti)(ti)(ti)上的(de)(de)(de)(de)(de)(de)(de)(de)熱平衡被(bei)(bei)打破(po)，熔(rong)體(ti)(ti)(ti)(ti)溫(wen)度上升(sheng)(sheng)到該金屬材(cai)料的(de)(de)(de)(de)(de)(de)(de)(de)熔(rong)點時(shi)(shi)(shi)，熔(rong)體(ti)(ti)(ti)(ti)的(de)(de)(de)(de)(de)(de)(de)(de)中(zhong)(zhong)間(jian)(jian)(jian)部分從固體(ti)(ti)(ti)(ti)變為液(ye)體(ti)(ti)(ti)(ti)，由(you)于懸(xuan)空在管中(zhong)(zhong)的(de)(de)(de)(de)(de)(de)(de)(de)金屬材(cai)料的(de)(de)(de)(de)(de)(de)(de)(de)表面張(zhang)力(li)及重力(li)使(shi)(shi)(shi)熔(rong)體(ti)(ti)(ti)(ti)的(de)(de)(de)(de)(de)(de)(de)(de)液(ye)體(ti)(ti)(ti)(ti)部分向(xiang)(xiang)(xiang)(xiang)兩端拉(la)開(kai)距離和(he)向(xiang)(xiang)(xiang)(xiang)下垂落，電(dian)(dian)(dian)壓引起的(de)(de)(de)(de)(de)(de)(de)(de)飛(fei)弧(hu)又使(shi)(shi)(shi)得(de)熔(rong)體(ti)(ti)(ti)(ti)溫(wen)度繼(ji)續上升(sheng)(sheng)，進(jin)一步飛(fei)弧(hu)和(he)進(jin)一步拉(la)開(kai)距離，直至電(dian)(dian)(dian)路(lu)被(bei)(bei)完(wan)全(quan)切斷。對(dui)應貼(tie)片式的(de)(de)(de)(de)(de)(de)(de)(de)保(bao)(bao)險(xian)絲(si)來說，其(qi)動(dong)作原理也是一樣的(de)(de)(de)(de)(de)(de)(de)(de)，但是由(you)于結(jie)構狀(zhuang)態的(de)(de)(de)(de)(de)(de)(de)(de)不同，金屬熔(rong)體(ti)(ti)(ti)(ti)的(de)(de)(de)(de)(de)(de)(de)(de)周(zhou)(zhou)圍(wei)都被(bei)(bei)其(qi)基體(ti)(ti)(ti)(ti)部分的(de)(de)(de)(de)(de)(de)(de)(de)高分子材(cai)料或(huo)陶瓷材(cai)料所緊緊圍(wei)貼(tie)著，即使(shi)(shi)(shi)是已經熔(rong)化的(de)(de)(de)(de)(de)(de)(de)(de)金屬也無(wu)法向(xiang)(xiang)(xiang)(xiang)兩端收(shou)縮，只能依(yi)(yi)靠(kao)向(xiang)(xiang)(xiang)(xiang)周(zhou)(zhou)圍(wei)材(cai)料的(de)(de)(de)(de)(de)(de)(de)(de)擴(kuo)散滲透或(huo)被(bei)(bei)吸(xi)收(shou)，如果在這(zhe)個過程中(zhong)(zhong)過電(dian)(dian)(dian)流(liu)消(xiao)失(shi)了（例如瞬間(jian)(jian)(jian)脈沖現象(xiang)），而(er)(er)擴(kuo)散或(huo)吸(xi)收(shou)的(de)(de)(de)(de)(de)(de)(de)(de)過程尚(shang)在進(jin)行過程中(zhong)(zhong)，此時(shi)(shi)(shi)就會(hui)造成(cheng)電(dian)(dian)(dian)阻(zu)變大(da)而(er)(er)熔(rong)體(ti)(ti)(ti)(ti)沒有(you)完(wan)全(quan)熔(rong)斷的(de)(de)(de)(de)(de)(de)(de)(de)現象(xiang)。再(zai)來看看這(zhe)種(zhong)現象(xiang)的(de)(de)(de)(de)(de)(de)(de)(de)后果：由(you)于此時(shi)(shi)(shi)過電(dian)(dian)(dian)流(liu)已經消(xiao)失(shi)，并沒有(you)對(dui)電(dian)(dian)(dian)路(lu)造成(cheng)不良(liang)影(ying)響，雖然(ran)此時(shi)(shi)(shi)的(de)(de)(de)(de)(de)(de)(de)(de)保(bao)(bao)險(xian)絲(si)沒有(you)完(wan)全(quan)被(bei)(bei)熔(rong)斷，但熔(rong)體(ti)(ti)(ti)(ti)的(de)(de)(de)(de)(de)(de)(de)(de)容(rong)量已經減弱，再(zai)次經受過電(dian)(dian)(dian)流(liu)時(shi)(shi)(shi)就會(hui)較快被(bei)(bei)熔(rong)斷，保(bao)(bao)證對(dui)電(dian)(dian)(dian)路(lu)的(de)(de)(de)(de)(de)(de)(de)(de)保(bao)(bao)護作用；如果第二次過電(dian)(dian)(dian)流(liu)依(yi)(yi)然(ran)是瞬間(jian)(jian)(jian)脈沖，則會(hui)造成(cheng)電(dian)(dian)(dian)阻(zu)再(zai)次變大(da)而(er)(er)依(yi)(yi)然(ran)沒完(wan)全(quan)熔(rong)斷，熔(rong)體(ti)(ti)(ti)(ti)的(de)(de)(de)(de)(de)(de)(de)(de)容(rong)量也再(zai)次減弱；總之，深(shen)圳貼片保險絲出現電(dian)阻變(bian)(bian)大而不(bu)完全熔(rong)斷(duan)現象并不(bu)影響它(ta)對(dui)電(dian)路的保護功(gong)能(neng)，只(zhi)要過(guo)(guo)(guo)電(dian)流持續(xu)時(shi)間一(yi)長，它(ta)就會(hui)被完全熔(rong)斷(duan)。相(xiang)反地如果經受了(le)過(guo)(guo)(guo)電(dian)流而沒有(you)(you)(you)(you)任何變(bian)(bian)化(hua)，則有(you)(you)(you)(you)可能(neng)保險絲的保護功(gong)能(neng)有(you)(you)(you)(you)問題了(le)。再(zai)對(dui)比管狀保險絲來(lai)看，慢(man)斷(duan)型(xing)保險絲的熔(rong)體由兩種以上的金屬材(cai)料復合(he)而成，在承受過(guo)(guo)(guo)電(dian)流時(shi)同樣(yang)有(you)(you)(you)(you)一(yi)個不(bu)同材(cai)料間互(hu)相(xiang)擴散(san)滲透的過(guo)(guo)(guo)程(cheng)，所以它(ta)會(hui)具有(you)(you)(you)(you)耐(nai)脈沖的能(neng)力，也(ye)有(you)(you)(you)(you)機會(hui)發生電(dian)阻變(bian)(bian)大的現象。

2、為什(shen)么保險絲(si)常在開(kai)機(ji)時(shi)(shi)或剛(gang)接通(tong)電源時(shi)(shi)斷開(kai)

大(da)(da)部(bu)分電(dian)(dian)(dian)(dian)(dian)路在(zai)(zai)剛接(jie)(jie)通電(dian)(dian)(dian)(dian)(dian)源時(shi)都會(hui)產(chan)生(sheng)一(yi)個瞬間(jian)浪涌(yong)電(dian)(dian)(dian)(dian)(dian)流，在(zai)(zai)容性或(huo)感(gan)性電(dian)(dian)(dian)(dian)(dian)路中(zhong)這種浪涌(yong)電(dian)(dian)(dian)(dian)(dian)流往往比正(zheng)常(chang)穩態(tai)電(dian)(dian)(dian)(dian)(dian)流要(yao)大(da)(da)好多倍(bei)，甚至幾十倍(bei)，如(ru)果在(zai)(zai)該電(dian)(dian)(dian)(dian)(dian)路中(zhong)使用的(de)(de)(de)(de)(de)(de)保(bao)(bao)(bao)險(xian)(xian)絲(si)(si)(si)的(de)(de)(de)(de)(de)(de)耐(nai)浪涌(yong)能力不(bu)夠(gou)強(qiang)的(de)(de)(de)(de)(de)(de)話，保(bao)(bao)(bao)險(xian)(xian)絲(si)(si)(si)就會(hui)被(bei)大(da)(da)能量(liang)(liang)的(de)(de)(de)(de)(de)(de)浪涌(yong)所(suo)沖(chong)(chong)(chong)斷(duan)(duan)。如(ru)果這個浪涌(yong)電(dian)(dian)(dian)(dian)(dian)流的(de)(de)(de)(de)(de)(de)持續時(shi)間(jian)很短，所(suo)釋放出來的(de)(de)(de)(de)(de)(de)能量(liang)(liang)不(bu)足以(yi)沖(chong)(chong)(chong)斷(duan)(duan)保(bao)(bao)(bao)險(xian)(xian)絲(si)(si)(si)時(shi)，保(bao)(bao)(bao)險(xian)(xian)絲(si)(si)(si)就不(bu)會(hui)斷(duan)(duan)，只(zhi)受到一(yi)定程(cheng)度的(de)(de)(de)(de)(de)(de)損(sun)傷，經過一(yi)定次數的(de)(de)(de)(de)(de)(de)浪涌(yong)沖(chong)(chong)(chong)擊才會(hui)被(bei)沖(chong)(chong)(chong)斷(duan)(duan)。與(yu)此相類似的(de)(de)(de)(de)(de)(de)是：部(bu)分接(jie)(jie)插部(bu)件在(zai)(zai)整(zheng)機工(gong)作(zuo)狀態(tai)時(shi)進行熱插拔也會(hui)產(chan)生(sheng)較大(da)(da)的(de)(de)(de)(de)(de)(de)脈沖(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)流，這時(shi)候的(de)(de)(de)(de)(de)(de)保(bao)(bao)(bao)險(xian)(xian)絲(si)(si)(si)如(ru)果耐(nai)脈沖(chong)(chong)(chong)能力不(bu)夠(gou)強(qiang)時(shi)也會(hui)常(chang)被(bei)脈沖(chong)(chong)(chong)所(suo)沖(chong)(chong)(chong)斷(duan)(duan)。要(yao)避免保(bao)(bao)(bao)險(xian)(xian)絲(si)(si)(si)被(bei)浪涌(yong)或(huo)脈沖(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)流所(suo)沖(chong)(chong)(chong)斷(duan)(duan)而無法正(zheng)常(chang)工(gong)作(zuo)，就需要(yao)我們選(xuan)用正(zheng)確的(de)(de)(de)(de)(de)(de)保(bao)(bao)(bao)險(xian)(xian)絲(si)(si)(si)品種，根據被(bei)保(bao)(bao)(bao)護(hu)電(dian)(dian)(dian)(dian)(dian)路中(zhong)產(chan)生(sheng)浪涌(yong)或(huo)脈沖(chong)(chong)(chong)的(de)(de)(de)(de)(de)(de)可能情況(kuang)，來選(xuan)擇合適的(de)(de)(de)(de)(de)(de)保(bao)(bao)(bao)險(xian)(xian)絲(si)(si)(si)類別，例如(ru)耐(nai)浪涌(yong)保(bao)(bao)(bao)險(xian)(xian)絲(si)(si)(si)或(huo)慢(man)熔(rong)(rong)(rong)斷(duan)(duan)保(bao)(bao)(bao)險(xian)(xian)絲(si)(si)(si)。保(bao)(bao)(bao)險(xian)(xian)絲(si)(si)(si)的(de)(de)(de)(de)(de)(de)熔(rong)(rong)(rong)化(hua)(hua)熱能指標I2t 的(de)(de)(de)(de)(de)(de)大(da)(da)小(xiao)代(dai)表了它耐(nai)浪涌(yong)的(de)(de)(de)(de)(de)(de)能力，慢(man)熔(rong)(rong)(rong)斷(duan)(duan)保(bao)(bao)(bao)險(xian)(xian)絲(si)(si)(si)的(de)(de)(de)(de)(de)(de)熔(rong)(rong)(rong)化(hua)(hua)熱能值要(yao)比同(tong)規格的(de)(de)(de)(de)(de)(de)快熔(rong)(rong)(rong)斷(duan)(duan)保(bao)(bao)(bao)險(xian)(xian)絲(si)(si)(si)大(da)(da)很多倍(bei)。

3、保險絲的額定(ding)電(dian)壓有什(shen)么(me)意義

由于(yu)(yu)保(bao)(bao)(bao)(bao)險(xian)(xian)(xian)絲(si)(si)(si)(si)本身的(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)阻值很(hen)(hen)小(xiao)(xiao)，而且我們希望越小(xiao)(xiao)越好，保(bao)(bao)(bao)(bao)險(xian)(xian)(xian)絲(si)(si)(si)(si)兩端的(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)降很(hen)(hen)小(xiao)(xiao)，比保(bao)(bao)(bao)(bao)險(xian)(xian)(xian)絲(si)(si)(si)(si)的(de)(de)(de)(de)(de)(de)額(e)(e)定電(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)要小(xiao)(xiao)很(hen)(hen)多很(hen)(hen)多，所(suo)以(yi)在(zai)保(bao)(bao)(bao)(bao)險(xian)(xian)(xian)絲(si)(si)(si)(si)正常工作時(shi)，額(e)(e)定電(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)并沒有什么實(shi)際意(yi)(yi)義。而保(bao)(bao)(bao)(bao)險(xian)(xian)(xian)絲(si)(si)(si)(si)的(de)(de)(de)(de)(de)(de)額(e)(e)定電(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)的(de)(de)(de)(de)(de)(de)真(zhen)正意(yi)(yi)義在(zai)于(yu)(yu)它(ta)的(de)(de)(de)(de)(de)(de)安(an)(an)全(quan)(quan)性(xing)能(neng)上。保(bao)(bao)(bao)(bao)險(xian)(xian)(xian)絲(si)(si)(si)(si)作為一(yi)個安(an)(an)全(quan)(quan)元件，必須保(bao)(bao)(bao)(bao)證(zheng)它(ta)在(zai)正常工作時(shi)、保(bao)(bao)(bao)(bao)護動作過(guo)(guo)程中(zhong)及熔(rong)(rong)體(ti)熔(rong)(rong)斷(duan)后(hou)(hou)的(de)(de)(de)(de)(de)(de)任(ren)何時(shi)段內都是(shi)安(an)(an)全(quan)(quan)的(de)(de)(de)(de)(de)(de)，在(zai)熔(rong)(rong)體(ti)的(de)(de)(de)(de)(de)(de)熔(rong)(rong)斷(duan)過(guo)(guo)程中(zhong)和熔(rong)(rong)體(ti)熔(rong)(rong)斷(duan)后(hou)(hou)，保(bao)(bao)(bao)(bao)險(xian)(xian)(xian)絲(si)(si)(si)(si)的(de)(de)(de)(de)(de)(de)額(e)(e)定電(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)就(jiu)具有非常重要的(de)(de)(de)(de)(de)(de)意(yi)(yi)義了。保(bao)(bao)(bao)(bao)險(xian)(xian)(xian)絲(si)(si)(si)(si)熔(rong)(rong)斷(duan)時(shi)的(de)(de)(de)(de)(de)(de)不安(an)(an)全(quan)(quan)因素來自過(guo)(guo)電(dian)(dian)(dian)(dian)(dian)流(liu)所(suo)釋放的(de)(de)(de)(de)(de)(de)能(neng)量，而該(gai)能(neng)量的(de)(de)(de)(de)(de)(de)大(da)(da)(da)小(xiao)(xiao)取決于(yu)(yu)電(dian)(dian)(dian)(dian)(dian)流(liu)和電(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)的(de)(de)(de)(de)(de)(de)乘(cheng)積，保(bao)(bao)(bao)(bao)證(zheng)保(bao)(bao)(bao)(bao)險(xian)(xian)(xian)絲(si)(si)(si)(si)安(an)(an)全(quan)(quan)性(xing)的(de)(de)(de)(de)(de)(de)最大(da)(da)(da)電(dian)(dian)(dian)(dian)(dian)流(liu)就(jiu)是(shi)額(e)(e)定分斷(duan)能(neng)力、最大(da)(da)(da)電(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)就(jiu)是(shi)額(e)(e)定電(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)，如果保(bao)(bao)(bao)(bao)險(xian)(xian)(xian)絲(si)(si)(si)(si)的(de)(de)(de)(de)(de)(de)額(e)(e)定電(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)小(xiao)(xiao)于(yu)(yu)電(dian)(dian)(dian)(dian)(dian)路(lu)電(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)的(de)(de)(de)(de)(de)(de)話，就(jiu)有可(ke)能(neng)產生(sheng)不安(an)(an)全(quan)(quan)現象(xiang)，所(suo)以(yi)必須使用額(e)(e)定電(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)大(da)(da)(da)于(yu)(yu)或(huo)(huo)等于(yu)(yu)電(dian)(dian)(dian)(dian)(dian)路(lu)最大(da)(da)(da)電(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)的(de)(de)(de)(de)(de)(de)保(bao)(bao)(bao)(bao)險(xian)(xian)(xian)絲(si)(si)(si)(si)。同樣地，在(zai)保(bao)(bao)(bao)(bao)險(xian)(xian)(xian)絲(si)(si)(si)(si)熔(rong)(rong)斷(duan)以(yi)后(hou)(hou)，電(dian)(dian)(dian)(dian)(dian)路(lu)電(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)就(jiu)直(zhi)接加在(zai)保(bao)(bao)(bao)(bao)險(xian)(xian)(xian)絲(si)(si)(si)(si)兩端，此時(shi)保(bao)(bao)(bao)(bao)險(xian)(xian)(xian)絲(si)(si)(si)(si)的(de)(de)(de)(de)(de)(de)額(e)(e)定電(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)就(jiu)是(shi)它(ta)的(de)(de)(de)(de)(de)(de)耐壓(ya)(ya)(ya)(ya)(ya)，也就(jiu)是(shi)它(ta)能(neng)夠(gou)承受的(de)(de)(de)(de)(de)(de)最大(da)(da)(da)電(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)，只有當保(bao)(bao)(bao)(bao)險(xian)(xian)(xian)絲(si)(si)(si)(si)的(de)(de)(de)(de)(de)(de)額(e)(e)定電(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)大(da)(da)(da)于(yu)(yu)或(huo)(huo)等于(yu)(yu)電(dian)(dian)(dian)(dian)(dian)路(lu)電(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)的(de)(de)(de)(de)(de)(de)時(shi)候才(cai)能(neng)保(bao)(bao)(bao)(bao)證(zheng)不被擊(ji)穿，不會持續拉弧或(huo)(huo)再次(ci)導通。所(suo)以(yi)我們在(zai)選用保(bao)(bao)(bao)(bao)險(xian)(xian)(xian)絲(si)(si)(si)(si)時(shi)必須保(bao)(bao)(bao)(bao)證(zheng)保(bao)(bao)(bao)(bao)險(xian)(xian)(xian)絲(si)(si)(si)(si)的(de)(de)(de)(de)(de)(de)額(e)(e)定電(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)要大(da)(da)(da)于(yu)(yu)或(huo)(huo)等于(yu)(yu)被保(bao)(bao)(bao)(bao)護電(dian)(dian)(dian)(dian)(dian)路(lu)的(de)(de)(de)(de)(de)(de)最大(da)(da)(da)電(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)，這樣才(cai)能(neng)保(bao)(bao)(bao)(bao)證(zheng)保(bao)(bao)(bao)(bao)險(xian)(xian)(xian)絲(si)(si)(si)(si)足夠(gou)的(de)(de)(de)(de)(de)(de)安(an)(an)全(quan)(quan)性(xing)能(neng)。

4、什么是保險絲的(de)分斷能(neng)力

保(bao)(bao)險(xian)(xian)絲(si)作為一(yi)(yi)個(ge)安(an)全(quan)(quan)(quan)(quan)元件(jian)，除了它(ta)(ta)的(de)(de)(de)性(xing)能(neng)(neng)(neng)要(yao)求以外，還必須具備嚴格(ge)的(de)(de)(de)安(an)全(quan)(quan)(quan)(quan)要(yao)求，保(bao)(bao)險(xian)(xian)絲(si)的(de)(de)(de)分(fen)(fen)斷(duan)能(neng)(neng)(neng)力(li)就是反映保(bao)(bao)險(xian)(xian)絲(si)安(an)全(quan)(quan)(quan)(quan)性(xing)能(neng)(neng)(neng)的(de)(de)(de)一(yi)(yi)個(ge)重(zhong)要(yao)指(zhi)(zhi)標，它(ta)(ta)的(de)(de)(de)具體含義就是：保(bao)(bao)險(xian)(xian)絲(si)在分(fen)(fen)斷(duan)電路的(de)(de)(de)過程中能(neng)(neng)(neng)夠(gou)承(cheng)受而不(bu)(bu)(bu)出現(xian)任何不(bu)(bu)(bu)安(an)全(quan)(quan)(quan)(quan)現(xian)象(xiang)的(de)(de)(de)最大短路電流(liu)，這(zhe)里的(de)(de)(de)不(bu)(bu)(bu)安(an)全(quan)(quan)(quan)(quan)現(xian)象(xiang)包括(kuo)---持續飛弧、冒煙、噴射、飛濺、燃燒、爆炸等。管狀保(bao)(bao)險(xian)(xian)絲(si)根(gen)據其分(fen)(fen)斷(duan)能(neng)(neng)(neng)力(li)的(de)(de)(de)大小可(ke)分(fen)(fen)為高(gao)分(fen)(fen)斷(duan)（1500A）、低分(fen)(fen)斷(duan)（35A 或(huo)10In）、增(zeng)強分(fen)(fen)斷(duan)（150A）等類型，片式保(bao)(bao)險(xian)(xian)絲(si)的(de)(de)(de)分(fen)(fen)斷(duan)能(neng)(neng)(neng)力(li)一(yi)(yi)般都在30-60A，這(zhe)個(ge)指(zhi)(zhi)標往往被使用者忽視或(huo)誤解(jie)，或(huo)跟保(bao)(bao)險(xian)(xian)絲(si)的(de)(de)(de)熔斷(duan)特(te)(te)性(xing)相混淆，正(zheng)確(que)理解(jie)保(bao)(bao)險(xian)(xian)絲(si)的(de)(de)(de)分(fen)(fen)斷(duan)能(neng)(neng)(neng)力(li)應(ying)該是：在被保(bao)(bao)護電路發生短路時的(de)(de)(de)極端最大電流(liu)不(bu)(bu)(bu)能(neng)(neng)(neng)超過保(bao)(bao)險(xian)(xian)絲(si)的(de)(de)(de)額定分(fen)(fen)斷(duan)能(neng)(neng)(neng)力(li)，否則有可(ke)能(neng)(neng)(neng)出現(xian)某些不(bu)(bu)(bu)安(an)全(quan)(quan)(quan)(quan)的(de)(de)(de)現(xian)象(xiang)，不(bu)(bu)(bu)能(neng)(neng)(neng)保(bao)(bao)證(zheng)該電路的(de)(de)(de)安(an)全(quan)(quan)(quan)(quan)。保(bao)(bao)險(xian)(xian)絲(si)的(de)(de)(de)分(fen)(fen)斷(duan)能(neng)(neng)(neng)力(li)是保(bao)(bao)險(xian)(xian)絲(si)主要(yao)的(de)(de)(de)安(an)全(quan)(quan)(quan)(quan)指(zhi)(zhi)標之(zhi)一(yi)(yi)，而熔斷(duan)特(te)(te)性(xing)則是保(bao)(bao)險(xian)(xian)絲(si)主要(yao)的(de)(de)(de)性(xing)能(neng)(neng)(neng)指(zhi)(zhi)標之(zhi)一(yi)(yi)，兩者各具完全(quan)(quan)(quan)(quan)不(bu)(bu)(bu)同的(de)(de)(de)含義和要(yao)求。

5、如何(he)選擇保險絲的熔斷特性和額定電流

熔(rong)(rong)(rong)斷(duan)(duan)(duan)特(te)(te)(te)性(xing)(xing)(xing)(xing)(xing)(xing)是(shi)(shi)保(bao)(bao)(bao)(bao)險(xian)(xian)(xian)(xian)絲(si)(si)最主要(yao)(yao)的(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)氣(qi)性(xing)(xing)(xing)(xing)(xing)(xing)能(neng)(neng)指標，保(bao)(bao)(bao)(bao)險(xian)(xian)(xian)(xian)絲(si)(si)對電(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)的(de)(de)(de)(de)保(bao)(bao)(bao)(bao)護(hu)性(xing)(xing)(xing)(xing)(xing)(xing)能(neng)(neng)都是(shi)(shi)通過熔(rong)(rong)(rong)斷(duan)(duan)(duan)特(te)(te)(te)性(xing)(xing)(xing)(xing)(xing)(xing)來體現(xian)的(de)(de)(de)(de)。應用(yong)于(yu)不(bu)(bu)同(tong)性(xing)(xing)(xing)(xing)(xing)(xing)質(zhi)電(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)的(de)(de)(de)(de)保(bao)(bao)(bao)(bao)險(xian)(xian)(xian)(xian)絲(si)(si)也(ye)具(ju)有(you)各種(zhong)不(bu)(bu)同(tong)的(de)(de)(de)(de)熔(rong)(rong)(rong)斷(duan)(duan)(duan)特(te)(te)(te)性(xing)(xing)(xing)(xing)(xing)(xing)，例如：用(yong)于(yu)保(bao)(bao)(bao)(bao)護(hu)敏感或(huo)(huo)貴重(zhong)元器件(jian)的(de)(de)(de)(de)保(bao)(bao)(bao)(bao)險(xian)(xian)(xian)(xian)絲(si)(si)必(bi)須(xu)是(shi)(shi)特(te)(te)(te)別(bie)快速熔(rong)(rong)(rong)斷(duan)(duan)(duan)的(de)(de)(de)(de)；在一般純阻性(xing)(xing)(xing)(xing)(xing)(xing)電(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)中(zhong)(zhong)(zhong)的(de)(de)(de)(de)保(bao)(bao)(bao)(bao)險(xian)(xian)(xian)(xian)絲(si)(si)需(xu)(xu)要(yao)(yao)快速熔(rong)(rong)(rong)斷(duan)(duan)(duan)的(de)(de)(de)(de)；在經常有(you)脈沖(chong)等瞬間(jian)過電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)或(huo)(huo)浪涌(yong)電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)的(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)中(zhong)(zhong)(zhong)的(de)(de)(de)(de)保(bao)(bao)(bao)(bao)險(xian)(xian)(xian)(xian)絲(si)(si)就(jiu)需(xu)(xu)要(yao)(yao)有(you)較強的(de)(de)(de)(de)抗浪涌(yong)能(neng)(neng)力；在開關整機時(shi)會有(you)很大浪涌(yong)電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)的(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)中(zhong)(zhong)(zhong)的(de)(de)(de)(de)保(bao)(bao)(bao)(bao)險(xian)(xian)(xian)(xian)絲(si)(si)就(jiu)一定(ding)(ding)要(yao)(yao)是(shi)(shi)慢熔(rong)(rong)(rong)斷(duan)(duan)(duan)類型的(de)(de)(de)(de)；使(shi)用(yong)中(zhong)(zhong)(zhong)會經常有(you)熱插拔動作的(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)保(bao)(bao)(bao)(bao)護(hu)也(ye)需(xu)(xu)要(yao)(yao)有(you)較強的(de)(de)(de)(de)抗浪涌(yong)能(neng)(neng)力的(de)(de)(de)(de)保(bao)(bao)(bao)(bao)險(xian)(xian)(xian)(xian)絲(si)(si)；還有(you)一些保(bao)(bao)(bao)(bao)險(xian)(xian)(xian)(xian)絲(si)(si)具(ju)有(you)特(te)(te)(te)慢速熔(rong)(rong)(rong)斷(duan)(duan)(duan)特(te)(te)(te)性(xing)(xing)(xing)(xing)(xing)(xing)的(de)(de)(de)(de)或(huo)(huo)稱為長延時(shi)的(de)(de)(de)(de)則能(neng)(neng)抵抗特(te)(te)(te)別(bie)大的(de)(de)(de)(de)浪涌(yong)電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)的(de)(de)(de)(de)沖(chong)擊(ji)。大部分的(de)(de)(de)(de)保(bao)(bao)(bao)(bao)險(xian)(xian)(xian)(xian)絲(si)(si)生產廠都會同(tong)時(shi)提(ti)供(gong)幾(ji)種(zhong)不(bu)(bu)同(tong)熔(rong)(rong)(rong)斷(duan)(duan)(duan)特(te)(te)(te)性(xing)(xing)(xing)(xing)(xing)(xing)的(de)(de)(de)(de)保(bao)(bao)(bao)(bao)險(xian)(xian)(xian)(xian)絲(si)(si)，以(yi)提(ti)供(gong)給客(ke)戶選(xuan)用(yong)。產品名稱中(zhong)(zhong)(zhong)的(de)(de)(de)(de)快熔(rong)(rong)(rong)斷(duan)(duan)(duan)或(huo)(huo)慢熔(rong)(rong)(rong)斷(duan)(duan)(duan)都是(shi)(shi)相對的(de)(de)(de)(de)，也(ye)只(zhi)是(shi)(shi)定(ding)(ding)性(xing)(xing)(xing)(xing)(xing)(xing)的(de)(de)(de)(de)，并(bing)不(bu)(bu)具(ju)體反(fan)映(ying)保(bao)(bao)(bao)(bao)險(xian)(xian)(xian)(xian)絲(si)(si)實(shi)際(ji)(ji)的(de)(de)(de)(de)動作速度，所以(yi)我(wo)(wo)們不(bu)(bu)能(neng)(neng)僅(jin)憑(ping)名義上的(de)(de)(de)(de)熔(rong)(rong)(rong)斷(duan)(duan)(duan)特(te)(te)(te)性(xing)(xing)(xing)(xing)(xing)(xing)來選(xuan)擇保(bao)(bao)(bao)(bao)險(xian)(xian)(xian)(xian)絲(si)(si)，正確(que)地選(xuan)擇應該(gai)參(can)考保(bao)(bao)(bao)(bao)險(xian)(xian)(xian)(xian)絲(si)(si)制造商提(ti)供(gong)的(de)(de)(de)(de)保(bao)(bao)(bao)(bao)險(xian)(xian)(xian)(xian)絲(si)(si)的(de)(de)(de)(de)“時(shi)間(jian)-電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)特(te)(te)(te)性(xing)(xing)(xing)(xing)(xing)(xing)曲(qu)線(xian)(xian)”，該(gai)曲(qu)線(xian)(xian)反(fan)映(ying)了(le)每個規格保(bao)(bao)(bao)(bao)險(xian)(xian)(xian)(xian)絲(si)(si)在不(bu)(bu)同(tong)電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)條件(jian)下的(de)(de)(de)(de)實(shi)際(ji)(ji)熔(rong)(rong)(rong)斷(duan)(duan)(duan)時(shi)間(jian)平(ping)均值，從(cong)中(zhong)(zhong)(zhong)我(wo)(wo)們可以(yi)比(bi)較準確(que)地判別(bie)保(bao)(bao)(bao)(bao)險(xian)(xian)(xian)(xian)絲(si)(si)的(de)(de)(de)(de)熔(rong)(rong)(rong)斷(duan)(duan)(duan)特(te)(te)(te)性(xing)(xing)(xing)(xing)(xing)(xing)，從(cong)而(er)選(xuan)出符(fu)合(he)(he)要(yao)(yao)求(qiu)的(de)(de)(de)(de)保(bao)(bao)(bao)(bao)險(xian)(xian)(xian)(xian)絲(si)(si)品種(zhong)。同(tong)樣地，保(bao)(bao)(bao)(bao)險(xian)(xian)(xian)(xian)絲(si)(si)的(de)(de)(de)(de)額定(ding)(ding)電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)也(ye)只(zhi)是(shi)(shi)一個識(shi)別(bie)的(de)(de)(de)(de)名稱，并(bing)不(bu)(bu)能(neng)(neng)真實(shi)反(fan)映(ying)它的(de)(de)(de)(de)實(shi)際(ji)(ji)熔(rong)(rong)(rong)斷(duan)(duan)(duan)電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)和(he)熔(rong)(rong)(rong)斷(duan)(duan)(duan)時(shi)間(jian)，在選(xuan)擇保(bao)(bao)(bao)(bao)險(xian)(xian)(xian)(xian)絲(si)(si)的(de)(de)(de)(de)額定(ding)(ding)電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)時(shi)，也(ye)需(xu)(xu)要(yao)(yao)參(can)考該(gai)保(bao)(bao)(bao)(bao)險(xian)(xian)(xian)(xian)絲(si)(si)的(de)(de)(de)(de)“時(shi)間(jian)-電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)特(te)(te)(te)性(xing)(xing)(xing)(xing)(xing)(xing)曲(qu)線(xian)(xian)”，通過該(gai)保(bao)(bao)(bao)(bao)險(xian)(xian)(xian)(xian)絲(si)(si)的(de)(de)(de)(de)特(te)(te)(te)性(xing)(xing)(xing)(xing)(xing)(xing)跟(gen)電(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)保(bao)(bao)(bao)(bao)護(hu)的(de)(de)(de)(de)實(shi)際(ji)(ji)需(xu)(xu)要(yao)(yao)進行配比(bi)，才能(neng)(neng)選(xuan)出正確(que)的(de)(de)(de)(de)符(fu)合(he)(he)要(yao)(yao)求(qiu)的(de)(de)(de)(de)額定(ding)(ding)電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)規格的(de)(de)(de)(de)保(bao)(bao)(bao)(bao)險(xian)(xian)(xian)(xian)絲(si)(si)。

6、環境溫度對保險絲的(de)性能有什么影響

我們(men)都知道保(bao)(bao)險(xian)(xian)(xian)(xian)(xian)絲(si)的(de)(de)(de)(de)(de)(de)(de)動(dong)(dong)作(zuo)原理是(shi)(shi)：當(dang)保(bao)(bao)險(xian)(xian)(xian)(xian)(xian)絲(si)在電(dian)路中承受負載電(dian)流(liu)(liu)(liu)時，電(dian)能轉化(hua)的(de)(de)(de)(de)(de)(de)(de)熱(re)能會(hui)(hui)使熔(rong)(rong)體(ti)的(de)(de)(de)(de)(de)(de)(de)溫(wen)度(du)(du)(du)(du)(du)從環(huan)(huan)(huan)境(jing)溫(wen)度(du)(du)(du)(du)(du)逐漸上升，同時保(bao)(bao)險(xian)(xian)(xian)(xian)(xian)絲(si)也(ye)會(hui)(hui)通過(guo)(guo)(guo)連接(jie)條(tiao)件(jian)散(san)(san)熱(re)，當(dang)工作(zuo)電(dian)流(liu)(liu)(liu)正常時，發(fa)熱(re)和散(san)(san)熱(re)達(da)(da)到平(ping)衡，熔(rong)(rong)體(ti)溫(wen)度(du)(du)(du)(du)(du)會(hui)(hui)維持(chi)在一個固定的(de)(de)(de)(de)(de)(de)(de)水平(ping)上下(xia)，而一旦(dan)電(dian)路出現故障，電(dian)流(liu)(liu)(liu)變大(da)發(fa)熱(re)增加(jia)，熔(rong)(rong)體(ti)上的(de)(de)(de)(de)(de)(de)(de)熱(re)平(ping)衡打(da)破溫(wen)度(du)(du)(du)(du)(du)會(hui)(hui)持(chi)續上升，達(da)(da)到熔(rong)(rong)體(ti)材料的(de)(de)(de)(de)(de)(de)(de)熔(rong)(rong)點時就開始熔(rong)(rong)斷過(guo)(guo)(guo)程。所(suo)(suo)(suo)(suo)以(yi)電(dian)流(liu)(liu)(liu)保(bao)(bao)險(xian)(xian)(xian)(xian)(xian)絲(si)動(dong)(dong)作(zuo)的(de)(de)(de)(de)(de)(de)(de)真(zhen)正原因是(shi)(shi)過(guo)(guo)(guo)電(dian)流(liu)(liu)(liu)所(suo)(suo)(suo)(suo)散(san)(san)發(fa)的(de)(de)(de)(de)(de)(de)(de)熱(re)量。既然保(bao)(bao)險(xian)(xian)(xian)(xian)(xian)絲(si)動(dong)(dong)作(zuo)直接(jie)由熱(re)量引(yin)起，所(suo)(suo)(suo)(suo)以(yi)環(huan)(huan)(huan)境(jing)溫(wen)度(du)(du)(du)(du)(du)就一定對(dui)保(bao)(bao)險(xian)(xian)(xian)(xian)(xian)絲(si)的(de)(de)(de)(de)(de)(de)(de)性(xing)能有影響(xiang)。這里的(de)(de)(de)(de)(de)(de)(de)環(huan)(huan)(huan)境(jing)溫(wen)度(du)(du)(du)(du)(du)除(chu)了(le)指(zhi)電(dian)子電(dian)氣設(she)備所(suo)(suo)(suo)(suo)在的(de)(de)(de)(de)(de)(de)(de)周圍室(shi)內或室(shi)外(wai)溫(wen)度(du)(du)(du)(du)(du)外(wai)，更(geng)重要(yao)的(de)(de)(de)(de)(de)(de)(de)是(shi)(shi)指(zhi)在設(she)備工作(zuo)時保(bao)(bao)險(xian)(xian)(xian)(xian)(xian)絲(si)在機器內部(bu)所(suo)(suo)(suo)(suo)處小(xiao)環(huan)(huan)(huan)境(jing)周圍的(de)(de)(de)(de)(de)(de)(de)溫(wen)度(du)(du)(du)(du)(du)，因為那將更(geng)加(jia)直接(jie)影響(xiang)到保(bao)(bao)險(xian)(xian)(xian)(xian)(xian)絲(si)的(de)(de)(de)(de)(de)(de)(de)性(xing)能，一般大(da)氣環(huan)(huan)(huan)境(jing)溫(wen)度(du)(du)(du)(du)(du)最高(gao)不(bu)會(hui)(hui)超(chao)過(guo)(guo)(guo)500C，但機內小(xiao)環(huan)(huan)(huan)境(jing)溫(wen)度(du)(du)(du)(du)(du)甚至可能超(chao)過(guo)(guo)(guo)100C，這對(dui)保(bao)(bao)險(xian)(xian)(xian)(xian)(xian)絲(si)性(xing)能的(de)(de)(de)(de)(de)(de)(de)影響(xiang)會(hui)(hui)很大(da)。環(huan)(huan)(huan)境(jing)溫(wen)度(du)(du)(du)(du)(du)越高(gao)，保(bao)(bao)險(xian)(xian)(xian)(xian)(xian)絲(si)熔(rong)(rong)斷越快，也(ye)就是(shi)(shi)說它的(de)(de)(de)(de)(de)(de)(de)規(gui)格(ge)實(shi)際上降低了(le)。由于保(bao)(bao)險(xian)(xian)(xian)(xian)(xian)絲(si)性(xing)能受到工作(zuo)環(huan)(huan)(huan)境(jing)溫(wen)度(du)(du)(du)(du)(du)的(de)(de)(de)(de)(de)(de)(de)影響(xiang)，所(suo)(suo)(suo)(suo)以(yi)我們(men)在選(xuan)用保(bao)(bao)險(xian)(xian)(xian)(xian)(xian)絲(si)的(de)(de)(de)(de)(de)(de)(de)時候還必須考慮到它的(de)(de)(de)(de)(de)(de)(de)實(shi)際工作(zuo)溫(wen)度(du)(du)(du)(du)(du)，保(bao)(bao)險(xian)(xian)(xian)(xian)(xian)絲(si)制(zhi)造商應該提供(gong)產品(pin)在高(gao)溫(wen)條(tiao)件(jian)下(xia)的(de)(de)(de)(de)(de)(de)(de)折(zhe)減曲線(xian)，這種曲線(xian)能夠告(gao)訴客戶(hu)在什么(me)溫(wen)度(du)(du)(du)(du)(du)下(xia)保(bao)(bao)險(xian)(xian)(xian)(xian)(xian)絲(si)的(de)(de)(de)(de)(de)(de)(de)額定電(dian)流(liu)(liu)(liu)將被折(zhe)減到百(bai)分之(zhi)多少(shao)。使用者可以(yi)根(gen)據(ju)電(dian)路實(shi)際要(yao)求選(xuan)擇(ze)合(he)適(shi)的(de)(de)(de)(de)(de)(de)(de)保(bao)(bao)險(xian)(xian)(xian)(xian)(xian)絲(si)品(pin)種規(gui)格(ge)，并根(gen)據(ju)保(bao)(bao)險(xian)(xian)(xian)(xian)(xian)絲(si)在設(she)備中小(xiao)環(huan)(huan)(huan)境(jing)的(de)(de)(de)(de)(de)(de)(de)溫(wen)度(du)(du)(du)(du)(du)情況加(jia)以(yi)適(shi)當(dang)的(de)(de)(de)(de)(de)(de)(de)折(zhe)減考慮。

7、慢熔斷保(bao)險絲與快熔斷在性能(neng)和應用有(you)什么不(bu)同

慢(man)(man)熔(rong)(rong)(rong)(rong)(rong)(rong)斷(duan)(duan)(duan)(duan)(duan)(duan)保(bao)(bao)(bao)(bao)(bao)(bao)(bao)(bao)險(xian)(xian)(xian)(xian)絲(si)與快(kuai)熔(rong)(rong)(rong)(rong)(rong)(rong)斷(duan)(duan)(duan)(duan)(duan)(duan)保(bao)(bao)(bao)(bao)(bao)(bao)(bao)(bao)險(xian)(xian)(xian)(xian)絲(si)的(de)(de)(de)(de)最(zui)主要(yao)(yao)區(qu)別在于它(ta)對瞬間(jian)(jian)脈沖(chong)電(dian)(dian)(dian)(dian)流(liu)(liu)的(de)(de)(de)(de)承受能(neng)力，也就(jiu)是說(shuo)(shuo)它(ta)可以抵抗(kang)開(kai)關機時(shi)浪(lang)(lang)(lang)涌(yong)電(dian)(dian)(dian)(dian)流(liu)(liu)的(de)(de)(de)(de)沖(chong)擊而不動作(zuo)，從而保(bao)(bao)(bao)(bao)(bao)(bao)(bao)(bao)證設備的(de)(de)(de)(de)正(zheng)常運作(zuo)，因(yin)此慢(man)(man)熔(rong)(rong)(rong)(rong)(rong)(rong)斷(duan)(duan)(duan)(duan)(duan)(duan)型保(bao)(bao)(bao)(bao)(bao)(bao)(bao)(bao)險(xian)(xian)(xian)(xian)絲(si)往往又被稱為(wei)耐浪(lang)(lang)(lang)涌(yong)保(bao)(bao)(bao)(bao)(bao)(bao)(bao)(bao)險(xian)(xian)(xian)(xian)絲(si)。從技術(shu)層面上來說(shuo)(shuo)，慢(man)(man)熔(rong)(rong)(rong)(rong)(rong)(rong)斷(duan)(duan)(duan)(duan)(duan)(duan)保(bao)(bao)(bao)(bao)(bao)(bao)(bao)(bao)險(xian)(xian)(xian)(xian)絲(si)具(ju)有(you)(you)較大(da)(da)的(de)(de)(de)(de)熔(rong)(rong)(rong)(rong)(rong)(rong)化熱(re)能(neng)值I2t，保(bao)(bao)(bao)(bao)(bao)(bao)(bao)(bao)險(xian)(xian)(xian)(xian)絲(si)熔(rong)(rong)(rong)(rong)(rong)(rong)斷(duan)(duan)(duan)(duan)(duan)(duan)所需要(yao)(yao)的(de)(de)(de)(de)能(neng)量(liang)(liang)較大(da)(da)，所以對于同(tong)樣額定電(dian)(dian)(dian)(dian)流(liu)(liu)的(de)(de)(de)(de)保(bao)(bao)(bao)(bao)(bao)(bao)(bao)(bao)險(xian)(xian)(xian)(xian)絲(si)來說(shuo)(shuo)，慢(man)(man)熔(rong)(rong)(rong)(rong)(rong)(rong)斷(duan)(duan)(duan)(duan)(duan)(duan)比(bi)快(kuai)熔(rong)(rong)(rong)(rong)(rong)(rong)斷(duan)(duan)(duan)(duan)(duan)(duan)耐脈沖(chong)的(de)(de)(de)(de)能(neng)力要(yao)(yao)強很(hen)多(duo)。由(you)于慢(man)(man)熔(rong)(rong)(rong)(rong)(rong)(rong)斷(duan)(duan)(duan)(duan)(duan)(duan)保(bao)(bao)(bao)(bao)(bao)(bao)(bao)(bao)險(xian)(xian)(xian)(xian)絲(si)的(de)(de)(de)(de)I2t 比(bi)同(tong)規格的(de)(de)(de)(de)快(kuai)熔(rong)(rong)(rong)(rong)(rong)(rong)斷(duan)(duan)(duan)(duan)(duan)(duan)保(bao)(bao)(bao)(bao)(bao)(bao)(bao)(bao)險(xian)(xian)(xian)(xian)絲(si)要(yao)(yao)大(da)(da)，所以在電(dian)(dian)(dian)(dian)路(lu)發生過電(dian)(dian)(dian)(dian)流(liu)(liu)時(shi)的(de)(de)(de)(de)熔(rong)(rong)(rong)(rong)(rong)(rong)斷(duan)(duan)(duan)(duan)(duan)(duan)時(shi)間(jian)(jian)也會(hui)比(bi)快(kuai)熔(rong)(rong)(rong)(rong)(rong)(rong)斷(duan)(duan)(duan)(duan)(duan)(duan)的(de)(de)(de)(de)要(yao)(yao)慢(man)(man)一(yi)(yi)些(xie)，那么會(hui)不會(hui)像有(you)(you)些(xie)人擔心的(de)(de)(de)(de)保(bao)(bao)(bao)(bao)(bao)(bao)(bao)(bao)護(hu)(hu)(hu)性(xing)能(neng)差(cha)了(le)呢？我們(men)說(shuo)(shuo)不會(hui)！因(yin)為(wei)一(yi)(yi)旦(dan)電(dian)(dian)(dian)(dian)路(lu)出現故障，過電(dian)(dian)(dian)(dian)流(liu)(liu)就(jiu)不會(hui)自行消失(shi)，持續(xu)過電(dian)(dian)(dian)(dian)流(liu)(liu)的(de)(de)(de)(de)能(neng)量(liang)(liang)會(hui)大(da)(da)大(da)(da)超過保(bao)(bao)(bao)(bao)(bao)(bao)(bao)(bao)險(xian)(xian)(xian)(xian)絲(si)的(de)(de)(de)(de)I2t，無論(lun)何(he)種保(bao)(bao)(bao)(bao)(bao)(bao)(bao)(bao)險(xian)(xian)(xian)(xian)絲(si)都會(hui)被熔(rong)(rong)(rong)(rong)(rong)(rong)斷(duan)(duan)(duan)(duan)(duan)(duan)，慢(man)(man)熔(rong)(rong)(rong)(rong)(rong)(rong)斷(duan)(duan)(duan)(duan)(duan)(duan)和快(kuai)熔(rong)(rong)(rong)(rong)(rong)(rong)斷(duan)(duan)(duan)(duan)(duan)(duan)之(zhi)間(jian)(jian)的(de)(de)(de)(de)時(shi)間(jian)(jian)差(cha)異對其保(bao)(bao)(bao)(bao)(bao)(bao)(bao)(bao)護(hu)(hu)(hu)要(yao)(yao)求(qiu)來說(shuo)(shuo)不是很(hen)重要(yao)(yao)的(de)(de)(de)(de)，只有(you)(you)在被保(bao)(bao)(bao)(bao)(bao)(bao)(bao)(bao)護(hu)(hu)(hu)電(dian)(dian)(dian)(dian)路(lu)中(zhong)有(you)(you)敏感器件(jian)(jian)需要(yao)(yao)保(bao)(bao)(bao)(bao)(bao)(bao)(bao)(bao)護(hu)(hu)(hu)的(de)(de)(de)(de)情況下(xia)，慢(man)(man)熔(rong)(rong)(rong)(rong)(rong)(rong)斷(duan)(duan)(duan)(duan)(duan)(duan)才會(hui)對保(bao)(bao)(bao)(bao)(bao)(bao)(bao)(bao)護(hu)(hu)(hu)性(xing)能(neng)有(you)(you)所影(ying)響(xiang)。由(you)于以上這些(xie)差(cha)異，慢(man)(man)熔(rong)(rong)(rong)(rong)(rong)(rong)斷(duan)(duan)(duan)(duan)(duan)(duan)保(bao)(bao)(bao)(bao)(bao)(bao)(bao)(bao)險(xian)(xian)(xian)(xian)絲(si)和快(kuai)熔(rong)(rong)(rong)(rong)(rong)(rong)斷(duan)(duan)(duan)(duan)(duan)(duan)保(bao)(bao)(bao)(bao)(bao)(bao)(bao)(bao)險(xian)(xian)(xian)(xian)絲(si)會(hui)被應用(yong)在不同(tong)的(de)(de)(de)(de)電(dian)(dian)(dian)(dian)路(lu)中(zhong)：純阻(zu)性(xing)電(dian)(dian)(dian)(dian)路(lu)（沒有(you)(you)或(huo)(huo)很(hen)少浪(lang)(lang)(lang)涌(yong)）或(huo)(huo)需要(yao)(yao)保(bao)(bao)(bao)(bao)(bao)(bao)(bao)(bao)護(hu)(hu)(hu)IC 等敏感貴重器件(jian)(jian)的(de)(de)(de)(de)電(dian)(dian)(dian)(dian)路(lu)中(zhong)必(bi)須(xu)采用(yong)快(kuai)熔(rong)(rong)(rong)(rong)(rong)(rong)斷(duan)(duan)(duan)(duan)(duan)(duan)保(bao)(bao)(bao)(bao)(bao)(bao)(bao)(bao)險(xian)(xian)(xian)(xian)絲(si)；而容性(xing)或(huo)(huo)感性(xing)電(dian)(dian)(dian)(dian)路(lu)（開(kai)關機時(shi)有(you)(you)浪(lang)(lang)(lang)涌(yong)）、電(dian)(dian)(dian)(dian)源輸入/輸出部分最(zui)好(hao)采用(yong)慢(man)(man)熔(rong)(rong)(rong)(rong)(rong)(rong)斷(duan)(duan)(duan)(duan)(duan)(duan)保(bao)(bao)(bao)(bao)(bao)(bao)(bao)(bao)險(xian)(xian)(xian)(xian)絲(si)；除(chu)了(le)保(bao)(bao)(bao)(bao)(bao)(bao)(bao)(bao)護(hu)(hu)(hu)IC 的(de)(de)(de)(de)電(dian)(dian)(dian)(dian)路(lu)外，大(da)(da)部分使用(yong)快(kuai)熔(rong)(rong)(rong)(rong)(rong)(rong)斷(duan)(duan)(duan)(duan)(duan)(duan)保(bao)(bao)(bao)(bao)(bao)(bao)(bao)(bao)險(xian)(xian)(xian)(xian)絲(si)的(de)(de)(de)(de)場合都能(neng)夠改用(yong)慢(man)(man)熔(rong)(rong)(rong)(rong)(rong)(rong)斷(duan)(duan)(duan)(duan)(duan)(duan)保(bao)(bao)(bao)(bao)(bao)(bao)(bao)(bao)險(xian)(xian)(xian)(xian)絲(si)，使其提高抗(kang)脈沖(chong)能(neng)力；反(fan)之(zhi)在使用(yong)慢(man)(man)熔(rong)(rong)(rong)(rong)(rong)(rong)斷(duan)(duan)(duan)(duan)(duan)(duan)保(bao)(bao)(bao)(bao)(bao)(bao)(bao)(bao)險(xian)(xian)(xian)(xian)絲(si)的(de)(de)(de)(de)地方若(ruo)改用(yong)快(kuai)熔(rong)(rong)(rong)(rong)(rong)(rong)斷(duan)(duan)(duan)(duan)(duan)(duan)保(bao)(bao)(bao)(bao)(bao)(bao)(bao)(bao)險(xian)(xian)(xian)(xian)絲(si)，則往往會(hui)造成(cheng)開(kai)機即斷(duan)(duan)(duan)(duan)(duan)(duan)，保(bao)(bao)(bao)(bao)(bao)(bao)(bao)(bao)險(xian)(xian)(xian)(xian)絲(si)無法正(zheng)常工作(zuo)的(de)(de)(de)(de)現象(xiang)。此外，由(you)于慢(man)(man)熔(rong)(rong)(rong)(rong)(rong)(rong)斷(duan)(duan)(duan)(duan)(duan)(duan)保(bao)(bao)(bao)(bao)(bao)(bao)(bao)(bao)險(xian)(xian)(xian)(xian)絲(si)的(de)(de)(de)(de)價(jia)格比(bi)快(kuai)熔(rong)(rong)(rong)(rong)(rong)(rong)斷(duan)(duan)(duan)(duan)(duan)(duan)保(bao)(bao)(bao)(bao)(bao)(bao)(bao)(bao)險(xian)(xian)(xian)(xian)絲(si)要(yao)(yao)高出不少，經濟考(kao)量(liang)(liang)也成(cheng)為(wei)選用(yong)時(shi)的(de)(de)(de)(de)一(yi)(yi)個(ge)間(jian)(jian)接因(yin)素。

8、怎(zen)么樣(yang)才使保險絲能承受多次瞬間脈沖的沖擊(ji)

我們(men)知道保(bao)(bao)(bao)險(xian)(xian)(xian)(xian)絲(si)(si)的(de)(de)(de)(de)(de)熔(rong)(rong)(rong)斷(duan)(duan)(duan)(duan)是(shi)熔(rong)(rong)(rong)體被(bei)過電流釋放(fang)的(de)(de)(de)(de)(de)熱能(neng)(neng)(neng)所(suo)(suo)熔(rong)(rong)(rong)化(hua)(hua)而(er)造成的(de)(de)(de)(de)(de)，而(er)能(neng)(neng)(neng)夠熔(rong)(rong)(rong)斷(duan)(duan)(duan)(duan)保(bao)(bao)(bao)險(xian)(xian)(xian)(xian)絲(si)(si)的(de)(de)(de)(de)(de)能(neng)(neng)(neng)量(liang)就(jiu)是(shi)保(bao)(bao)(bao)險(xian)(xian)(xian)(xian)絲(si)(si)的(de)(de)(de)(de)(de)熔(rong)(rong)(rong)化(hua)(hua)熱能(neng)(neng)(neng)值(zhi)I2t，理論上說，只要(yao)(yao)保(bao)(bao)(bao)險(xian)(xian)(xian)(xian)絲(si)(si)熔(rong)(rong)(rong)化(hua)(hua)所(suo)(suo)需要(yao)(yao)的(de)(de)(de)(de)(de)能(neng)(neng)(neng)量(liang)大(da)于瞬間脈(mo)(mo)(mo)沖(chong)(chong)(chong)(chong)(chong)(chong)(chong)電流所(suo)(suo)釋放(fang)的(de)(de)(de)(de)(de)能(neng)(neng)(neng)量(liang)，保(bao)(bao)(bao)險(xian)(xian)(xian)(xian)絲(si)(si)就(jiu)不(bu)(bu)(bu)(bu)會(hui)被(bei)沖(chong)(chong)(chong)(chong)(chong)(chong)(chong)斷(duan)(duan)(duan)(duan)，也(ye)就(jiu)是(shi)保(bao)(bao)(bao)險(xian)(xian)(xian)(xian)絲(si)(si)可(ke)(ke)以抵(di)抗這(zhe)種脈(mo)(mo)(mo)沖(chong)(chong)(chong)(chong)(chong)(chong)(chong)的(de)(de)(de)(de)(de)沖(chong)(chong)(chong)(chong)(chong)(chong)(chong)擊(ji)(ji)，一般慢熔(rong)(rong)(rong)斷(duan)(duan)(duan)(duan)型保(bao)(bao)(bao)險(xian)(xian)(xian)(xian)絲(si)(si)都(dou)(dou)具(ju)備這(zhe)種特(te)性(xing)。那(nei)(nei)么(me)抵(di)抗過一次(ci)(ci)瞬間脈(mo)(mo)(mo)沖(chong)(chong)(chong)(chong)(chong)(chong)(chong)的(de)(de)(de)(de)(de)保(bao)(bao)(bao)險(xian)(xian)(xian)(xian)絲(si)(si)有(you)沒有(you)發生(sheng)什么(me)變(bian)化(hua)(hua)呢？那(nei)(nei)就(jiu)要(yao)(yao)看(kan)它(ta)受(shou)脈(mo)(mo)(mo)沖(chong)(chong)(chong)(chong)(chong)(chong)(chong)的(de)(de)(de)(de)(de)傷害有(you)多(duo)大(da)了，如果該(gai)脈(mo)(mo)(mo)沖(chong)(chong)(chong)(chong)(chong)(chong)(chong)能(neng)(neng)(neng)量(liang)遠(yuan)小(xiao)于保(bao)(bao)(bao)險(xian)(xian)(xian)(xian)絲(si)(si)熔(rong)(rong)(rong)化(hua)(hua)熱能(neng)(neng)(neng)，保(bao)(bao)(bao)險(xian)(xian)(xian)(xian)絲(si)(si)受(shou)到的(de)(de)(de)(de)(de)沖(chong)(chong)(chong)(chong)(chong)(chong)(chong)擊(ji)(ji)很小(xiao)，那(nei)(nei)么(me)保(bao)(bao)(bao)險(xian)(xian)(xian)(xian)絲(si)(si)就(jiu)可(ke)(ke)以接(jie)受(shou)許許多(duo)多(duo)次(ci)(ci)沖(chong)(chong)(chong)(chong)(chong)(chong)(chong)擊(ji)(ji)而(er)不(bu)(bu)(bu)(bu)被(bei)沖(chong)(chong)(chong)(chong)(chong)(chong)(chong)斷(duan)(duan)(duan)(duan)，反(fan)之如果脈(mo)(mo)(mo)沖(chong)(chong)(chong)(chong)(chong)(chong)(chong)能(neng)(neng)(neng)量(liang)接(jie)近保(bao)(bao)(bao)險(xian)(xian)(xian)(xian)絲(si)(si)熔(rong)(rong)(rong)化(hua)(hua)熱能(neng)(neng)(neng)，保(bao)(bao)(bao)險(xian)(xian)(xian)(xian)絲(si)(si)被(bei)沖(chong)(chong)(chong)(chong)(chong)(chong)(chong)擊(ji)(ji)一次(ci)(ci)受(shou)到的(de)(de)(de)(de)(de)損(sun)(sun)傷很大(da)，那(nei)(nei)么(me)它(ta)就(jiu)可(ke)(ke)能(neng)(neng)(neng)受(shou)不(bu)(bu)(bu)(bu)起第二次(ci)(ci)的(de)(de)(de)(de)(de)沖(chong)(chong)(chong)(chong)(chong)(chong)(chong)擊(ji)(ji)了，也(ye)就(jiu)是(shi)說：保(bao)(bao)(bao)險(xian)(xian)(xian)(xian)絲(si)(si)在經(jing)受(shou)每一次(ci)(ci)脈(mo)(mo)(mo)沖(chong)(chong)(chong)(chong)(chong)(chong)(chong)的(de)(de)(de)(de)(de)沖(chong)(chong)(chong)(chong)(chong)(chong)(chong)擊(ji)(ji)后(hou)都(dou)(dou)會(hui)受(shou)到一定程度的(de)(de)(de)(de)(de)損(sun)(sun)傷，即(ji)(ji)它(ta)的(de)(de)(de)(de)(de)耐脈(mo)(mo)(mo)沖(chong)(chong)(chong)(chong)(chong)(chong)(chong)能(neng)(neng)(neng)力有(you)所(suo)(suo)減弱(ruo)或I2t 有(you)所(suo)(suo)降低，減弱(ruo)或降低的(de)(de)(de)(de)(de)程度跟脈(mo)(mo)(mo)沖(chong)(chong)(chong)(chong)(chong)(chong)(chong)的(de)(de)(de)(de)(de)能(neng)(neng)(neng)量(liang)成正比。我們(men)要(yao)(yao)使保(bao)(bao)(bao)險(xian)(xian)(xian)(xian)絲(si)(si)能(neng)(neng)(neng)夠承(cheng)受(shou)多(duo)次(ci)(ci)瞬間脈(mo)(mo)(mo)沖(chong)(chong)(chong)(chong)(chong)(chong)(chong)的(de)(de)(de)(de)(de)沖(chong)(chong)(chong)(chong)(chong)(chong)(chong)擊(ji)(ji)，必須要(yao)(yao)在保(bao)(bao)(bao)險(xian)(xian)(xian)(xian)絲(si)(si)的(de)(de)(de)(de)(de)I2t 和脈(mo)(mo)(mo)沖(chong)(chong)(chong)(chong)(chong)(chong)(chong)能(neng)(neng)(neng)量(liang)間放(fang)足夠的(de)(de)(de)(de)(de)余量(liang)，不(bu)(bu)(bu)(bu)同的(de)(de)(de)(de)(de)電器(qi)產品由于使用壽命和開關頻率不(bu)(bu)(bu)(bu)同，需要(yao)(yao)承(cheng)受(shou)脈(mo)(mo)(mo)沖(chong)(chong)(chong)(chong)(chong)(chong)(chong)的(de)(de)(de)(de)(de)次(ci)(ci)數也(ye)不(bu)(bu)(bu)(bu)同，所(suo)(suo)以保(bao)(bao)(bao)險(xian)(xian)(xian)(xian)絲(si)(si)的(de)(de)(de)(de)(de)供(gong)應(ying)(ying)(ying)商應(ying)(ying)(ying)該(gai)提供(gong)相(xiang)應(ying)(ying)(ying)的(de)(de)(de)(de)(de)參考數據，即(ji)(ji)對應(ying)(ying)(ying)不(bu)(bu)(bu)(bu)同脈(mo)(mo)(mo)沖(chong)(chong)(chong)(chong)(chong)(chong)(chong)次(ci)(ci)數，需要(yao)(yao)選(xuan)擇保(bao)(bao)(bao)險(xian)(xian)(xian)(xian)絲(si)(si)的(de)(de)(de)(de)(de)I2t 對脈(mo)(mo)(mo)沖(chong)(chong)(chong)(chong)(chong)(chong)(chong)能(neng)(neng)(neng)量(liang)的(de)(de)(de)(de)(de)不(bu)(bu)(bu)(bu)同倍(bei)數。

9、一次性保(bao)險絲和可恢復(fu)保(bao)險絲的異同

可(ke)恢復保(bao)(bao)險絲本質上是(shi)正溫度(du)(du)系數熱敏電阻，它(ta)(ta)是(shi)通過PTC 材料的(de)(de)(de)(de)(de)電阻值對溫度(du)(du)的(de)(de)(de)(de)(de)正相(xiang)關及(ji)在(zai)(zai)(zai)居里溫度(du)(du)點(dian)時的(de)(de)(de)(de)(de)突(tu)變而(er)起到電路保(bao)(bao)護(hu)(hu)作用(yong)的(de)(de)(de)(de)(de)，這(zhe)一點(dian)原理跟保(bao)(bao)險絲完全不(bu)同。我們先來(lai)看(kan)(kan)看(kan)(kan)這(zhe)兩(liang)種(zhong)產(chan)(chan)(chan)品(pin)的(de)(de)(de)(de)(de)相(xiang)同點(dian)：它(ta)(ta)們都可(ke)用(yong)來(lai)做電路的(de)(de)(de)(de)(de)過電流保(bao)(bao)護(hu)(hu)，其(qi)使用(yong)的(de)(de)(de)(de)(de)不(bu)少領域和場(chang)合(he)有類似，還(huan)有一部分場(chang)合(he)這(zhe)兩(liang)種(zhong)產(chan)(chan)(chan)品(pin)都可(ke)以使用(yong)，還(huan)可(ke)以互相(xiang)替換，例如在(zai)(zai)(zai)過流保(bao)(bao)護(hu)(hu)要(yao)求(qiu)不(bu)太高的(de)(de)(de)(de)(de)電池保(bao)(bao)護(hu)(hu)應用(yong)中這(zhe)兩(liang)類產(chan)(chan)(chan)品(pin)都能(neng)各領風騷；在(zai)(zai)(zai)對某些IC 等重要(yao)器件(jian)保(bao)(bao)護(hu)(hu)應用(yong)中，或(huo)電源的(de)(de)(de)(de)(de)輸入(ru)/輸出端就只(zhi)有一次性保(bao)(bao)險絲才有可(ke)能(neng)勝任其(qi)保(bao)(bao)護(hu)(hu)功(gong)能(neng)，這(zhe)些部位對阻抗要(yao)求(qiu)也較高；而(er)一些必須避免因過熱而(er)燒壞產(chan)(chan)(chan)品(pin)的(de)(de)(de)(de)(de)場(chang)合(he)，或(huo)者(zhe)是(shi)經常需要(yao)熱插拔操作的(de)(de)(de)(de)(de)接口過流保(bao)(bao)護(hu)(hu)，則是(shi)PTC 的(de)(de)(de)(de)(de)最佳用(yong)武之地；然(ran)而(er)在(zai)(zai)(zai)更大(da)多(duo)(duo)數的(de)(de)(de)(de)(de)場(chang)合(he)里，這(zhe)兩(liang)類產(chan)(chan)(chan)品(pin)還(huan)是(shi)有很多(duo)(duo)很多(duo)(duo)的(de)(de)(de)(de)(de)差異，甚至根本不(bu)可(ke)能(neng)互相(xiang)替代，它(ta)(ta)們的(de)(de)(de)(de)(de)主要(yao)區別或(huo)差異可(ke)以通過下表(biao)內容來(lai)體現(xian)：由于有共(gong)同點(dian)和差異的(de)(de)(de)(de)(de)存在(zai)(zai)(zai)，使得這(zhe)兩(liang)類產(chan)(chan)(chan)品(pin)能(neng)夠在(zai)(zai)(zai)市(shi)場(chang)上長期共(gong)存，各得其(qi)所。

10、有哪(na)些因素會(hui)影響保險絲(si)性能

如前所述，溫度對保(bao)險(xian)絲(si)的(de)性能(neng)有很(hen)直接的(de)影響(xiang)，那么(me)除了保(bao)險(xian)絲(si)在電路中(zhong)小環境溫度外，還有很(hen)多因(yin)素都(dou)會影響(xiang)到(dao)保(bao)險(xian)絲(si)熔體上的(de)溫度的(de)變(bian)化，這些(xie)都(dou)會影響(xiang)到(dao)保(bao)險(xian)絲(si)的(de)性能(neng)。

保險(xian)(xian)絲的內(nei)阻(zu)(zu)：初始內(nei)阻(zu)(zu)增大(da)或(huo)保險(xian)(xian)絲老化后的內(nei)阻(zu)(zu)增大(da)都會(hui)導致保險(xian)(xian)絲散(san)熱條(tiao)件的變(bian)(bian)化，從而使保險(xian)(xian)絲的熔斷時間變(bian)(bian)快。

保(bao)險(xian)絲的連(lian)(lian)接(jie)：保(bao)險(xian)絲在電路中的可靠(kao)連(lian)(lian)接(jie)是(shi)保(bao)證保(bao)險(xian)絲性(xing)能的重要環節，如(ru)果(guo)連(lian)(lian)接(jie)部(bu)位接(jie)觸電阻增大(da)，其后果(guo)跟內(nei)阻增大(da)一(yi)樣。

保險(xian)(xian)絲(si)跟發熱元(yuan)(yuan)件(jian)間的(de)距(ju)離(li)、電路(lu)中(zhong)元(yuan)(yuan)器(qi)件(jian)排(pai)列疏密程度、連(lian)接導線或PC 板上走線的(de)截面積(ji)和長度都有關(guan)。除此(ci)之外，對(dui)保險(xian)(xian)絲(si)技術參數熔斷特(te)性、額定(ding)電流(liu)、額定(ding)電壓(ya)、分斷能(neng)力等選(xuan)用(yong)不(bu)當，肯定(ding)也將影響(xiang)保險(xian)(xian)絲(si)正常發揮其應起的(de)作用(yong)。對(dui)于小規格保險(xian)(xian)絲(si)來(lai)說(shuo)，如果(guo)其本(ben)身(shen)內阻較大，而(er)工(gong)作電壓(ya)很低的(de)時(shi)候(hou)，有時(shi)會出現沒有電流(liu)輸出的(de)現象，這并不(bu)是(shi)保險(xian)(xian)絲(si)有問題，而(er)是(shi)外界其他因素而(er)引起的(de)。