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19925349843啥叫保(bao)(bao)險絲？這是一個神(shen)奇的小物件，當有浪涌(yong)電(dian)流狀態時，它(ta)會自毀。那為什(shen)么要(yao)創造這樣的設(she)備(bei)呢？原(yuan)因很簡單，即保(bao)(bao)護(hu)熔斷(duan)器所在(zai)電(dian)路的其余部件，因為整個電(dian)路的會被破壞相比(bi)，更換保(bao)(bao)險絲是最(zui)小的成本。
? ? ?熔(rong)(rong)斷(duan)器(qi)(qi)是指電(dian)路中(zhong)出現較大浪涌或其他電(dian)流超限的(de)(de)自毀(hui)式熔(rong)(rong)斷(duan)器(qi)(qi)；即(ji)為了(le)保(bao)(bao)護熔(rong)(rong)斷(duan)器(qi)(qi)所在(zai)的(de)(de)、設備正常的(de)(de)電(dian)路其他部分的(de)(de)元件，與(yu)更換可能被破壞的(de)(de)整個電(dian)路相比，更換熔(rong)(rong)斷(duan)器(qi)(qi)的(de)(de)成(cheng)本可以(yi)忽略不計。由于(yu)保(bao)(bao)險絲(si)是一種(zhong)常見的(de)(de)元素(su)，需要更換，所以(yi)大家介紹兩個基本常識，更深入地介紹了(le)融合應(ying)用和(he)測試和(he)診斷(duan)方法可見網站(zhan)的(de)(de)相關(guan)文章。
常識1：判斷(duan)(duan)熔斷(duan)(duan)器是(shi)否(fou)燒（熔斷(duan)(duan)器）？
? ? ?如果保險絲可從電路中移除的情況下可以是可視化深(shen)圳保險絲判斷(duan)是(shi)否(fou)燒斷(duan)的(de)(de)保(bao)(bao)(bao)險(xian)絲(si)(si);保(bao)(bao)(bao)險(xian)絲(si)(si)熔斷(duan)其(qi)他(ta)材(cai)料，以確定它(ta)(ta)是(shi)否(fou)是(shi)連(lian)續(xu)性測試(shi)的(de)(de)最簡單(dan)的(de)(de)方法。拿(na)萬(wan)能用(yong)表快速測試(shi)，以確定它(ta)(ta)是(shi)否(fou)能正常工(gong)作，方法是(shi)，直到聽到蜂(feng)鳴(ming)(ming)(ming)聲觸摸(mo)電(dian)(dian)(dian)(dian)線在(zai)一(yi)起，或者看到一(yi)個0歐姆讀數。在(zai)確認(ren)電(dian)(dian)(dian)(dian)路(lu)(lu)電(dian)(dian)(dian)(dian)源(yuan)(yuan)關上后(hou)，將引(yin)線放在(zai)保(bao)(bao)(bao)險(xian)絲(si)(si)的(de)(de)兩端，假如(ru)聽到一(yi)樣的(de)(de)蜂(feng)鳴(ming)(ming)(ming)聲，萬(wan)用(yong)表的(de)(de)電(dian)(dian)(dian)(dian)阻值(zhi)讀數很低，那么(me)保(bao)(bao)(bao)險(xian)絲(si)(si)就不會熔斷(duan)了(le)。如(ru)果(guo)(guo)你沒有聽到蜂(feng)鳴(ming)(ming)(ming)聲，抄(chao)表是(shi)OL，那保(bao)(bao)(bao)險(xian)絲(si)(si)就會燒斷(duan)。采取(qu)一(yi)定合理的(de)(de)預防(fang)措施(shi)，遠離危險(xian)的(de)(de)電(dian)(dian)(dian)(dian)壓。給電(dian)(dian)(dian)(dian)源(yuan)(yuan)電(dian)(dian)(dian)(dian)路(lu)(lu)，然后(hou)切(qie)換到萬(wan)用(yong)表電(dian)(dian)(dian)(dian)壓測量模(mo)式。保(bao)(bao)(bao)證直流電(dian)(dian)(dian)(dian)路(lu)(lu)選擇(ze)直流，交(jiao)流電(dian)(dian)(dian)(dian)路(lu)(lu)選擇(ze)交(jiao)流..在(zai)熔斷(duan)器的(de)(de)兩側(ce)萬(wan)用(yong)表引(yin)線。如(ru)果(guo)(guo)指(zhi)示的(de)(de)電(dian)(dian)(dian)(dian)壓很小，甚至不是(shi)，保(bao)(bao)(bao)險(xian)絲(si)(si)是(shi)完整的(de)(de)。然而，如(ru)果(guo)(guo)電(dian)(dian)(dian)(dian)壓差（通常滿電(dian)(dian)(dian)(dian)源(yuan)(yuan)電(dian)(dian)(dian)(dian)壓幅度）存在(zai)，則(ze)保(bao)(bao)(bao)險(xian)絲(si)(si)被燒斷(duan)。
? ? ?常識2：如(ru)何正確(que)的(de)更換保險(xian)絲？
? ? ?最(zui)好使(shi)(shi)用(yong)同樣規格的(de)(de)(de)原始(shi)(shi)模型(xing)更換(huan)保(bao)險(xian)(xian)(xian)絲壞保(bao)險(xian)(xian)(xian)絲。假如沒有(you)一樣規格的(de)(de)(de)保(bao)險(xian)(xian)(xian)絲，請注(zhu)意(yi)使(shi)(shi)用(yong)的(de)(de)(de)保(bao)險(xian)(xian)(xian)絲類型(xing)是快(kuai)還是慢(man)。通常(chang)，慢(man)熔(rong)保(bao)險(xian)(xian)(xian)絲可快(kuai)可吹(chui)入(ru)地方(fang)（而不是臨時(shi)使(shi)(shi)用(yong)）慢(man)熔(rong)保(bao)險(xian)(xian)(xian)絲，但(dan)從來沒有(you)反之(zhi)亦然。電感電路(lu)的(de)(de)(de)慢(man)保(bao)險(xian)(xian)(xian)絲。啟(qi)動電機（不包括頻率轉換(huan)）是一個例子，雖然電機的(de)(de)(de)額定電流(liu)是低(di)的(de)(de)(de)，但(dan)是當(dang)起(qi)始(shi)(shi)電流(liu)為3-7倍的(de)(de)(de)額定電流(liu)。驅使(shi)(shi)慢(man)熔(rong)斷(duan)器時(shi)，可以在(zai)(zai)短時(shi)間內允許(xu)大(da)電流(liu)，但(dan)時(shi)間要非(fei)常(chang)短。在(zai)(zai)這種情況下，如果使(shi)(shi)用(yong)快(kuai)速熔(rong)斷(duan)保(bao)險(xian)(xian)(xian)絲的(de)(de)(de)，它會立(li)即斷(duan)開電流(liu)。
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