1、當電(dian)(dian)(dian)流(liu)(liu)(liu)流(liu)(liu)(liu)過(guo)(guo)導(dao)體時，因(yin)導(dao)體存在(zai)(zai)一定(ding)的(de)(de)(de)(de)(de)電(dian)(dian)(dian)阻，所以導(dao)體將(jiang)會發(fa)(fa)熱。且發(fa)(fa)熱量(liang)遵循著(zhu)這個公式：Q=0.24I2RT；其(qi)(qi)(qi)中Q是(shi)(shi)(shi)發(fa)(fa)熱量(liang)，0.24是(shi)(shi)(shi)一個常數，I是(shi)(shi)(shi)流(liu)(liu)(liu)過(guo)(guo)導(dao)體的(de)(de)(de)(de)(de)電(dian)(dian)(dian)流(liu)(liu)(liu)，R是(shi)(shi)(shi)導(dao)體的(de)(de)(de)(de)(de)電(dian)(dian)(dian)阻，T是(shi)(shi)(shi)電(dian)(dian)(dian)流(liu)(liu)(liu)流(liu)(liu)(liu)過(guo)(guo)導(dao)體的(de)(de)(de)(de)(de)時間(jian)；依此公式我們(men)不(bu)難看出保(bao)險(xian)(xian)(xian)(xian)絲(si)的(de)(de)(de)(de)(de)簡單(dan)的(de)(de)(de)(de)(de)工(gong)作(zuo)原(yuan)理了。2、當制作(zuo)保(bao)險(xian)(xian)(xian)(xian)絲(si)的(de)(de)(de)(de)(de)材料及其(qi)(qi)(qi)形(xing)狀確(que)定(ding)了，其(qi)(qi)(qi)電(dian)(dian)(dian)阻R就(jiu)相對確(que)定(ding)了（若不(bu)考(kao)慮它的(de)(de)(de)(de)(de)電(dian)(dian)(dian)阻溫度(du)系數）。當電(dian)(dian)(dian)流(liu)(liu)(liu)流(liu)(liu)(liu)過(guo)(guo)它時，它就(jiu)會發(fa)(fa)熱，隨著(zhu)時間(jian)的(de)(de)(de)(de)(de)增加(jia)其(qi)(qi)(qi)發(fa)(fa)熱量(liang)也在(zai)(zai)增加(jia)。溫度(du)保(bao)險(xian)(xian)(xian)(xian)絲(si)又分為低熔點合金形(xing)與感溫觸發(fa)(fa)形(xing)還有記憶合金形(xing)等等（溫度(du)保(bao)險(xian)(xian)(xian)(xian)絲(si)是(shi)(shi)(shi)防(fang)止發(fa)(fa)熱電(dian)(dian)(dian)器(qi)或易發(fa)(fa)熱電(dian)(dian)(dian)器(qi)溫度(du)過(guo)(guo)高而進(jin)行保(bao)護的(de)(de)(de)(de)(de)，例如(ru)：電(dian)(dian)(dian)吹風、電(dian)(dian)(dian)熨斗、電(dian)(dian)(dian)飯鍋、電(dian)(dian)(dian)爐、變壓器(qi)、電(dian)(dian)(dian)動機等等；它響應于用電(dian)(dian)(dian)電(dian)(dian)(dian)器(qi)溫升(sheng)的(de)(de)(de)(de)(de)升(sheng)高，不(bu)會理會電(dian)(dian)(dian)路的(de)(de)(de)(de)(de)工(gong)作(zuo)電(dian)(dian)(dian)流(liu)(liu)(liu)大(da)小。其(qi)(qi)(qi)工(gong)作(zuo)原(yuan)理不(bu)同于"限(xian)流(liu)(liu)(liu)保(bao)險(xian)(xian)(xian)(xian)絲(si)"）。保(bao)險(xian)(xian)(xian)(xian)絲(si)都應用在(zai)(zai)什(shen)么地方？北(bei)京貼片保(bao)險(xian)(xian)(xian)(xian)絲(si)EVFP

保(bao)(bao)(bao)(bao)險(xian)絲(si)(fuse)也被稱(cheng)為(wei)電(dian)(dian)(dian)流(liu)保(bao)(bao)(bao)(bao)險(xian)絲(si)，IEC127標準(zhun)將它(ta)定義為(wei)"熔(rong)(rong)斷(duan)(duan)體（fuse-link)"。其主要是起過載(zai)保(bao)(bao)(bao)(bao)護(hu)作(zuo)用(yong)。電(dian)(dian)(dian)路(lu)(lu)中(zhong)(zhong)正(zheng)確安(an)置保(bao)(bao)(bao)(bao)險(xian)絲(si)，保(bao)(bao)(bao)(bao)險(xian)絲(si)就(jiu)(jiu)會(hui)(hui)在(zai)電(dian)(dian)(dian)流(liu)異(yi)常(chang)升(sheng)高(gao)(gao)到(dao)一定的(de)(de)(de)高(gao)(gao)度(du)(du)和熱度(du)(du)的(de)(de)(de)時候，自身熔(rong)(rong)斷(duan)(duan)切斷(duan)(duan)電(dian)(dian)(dian)流(liu)，保(bao)(bao)(bao)(bao)護(hu)了(le)電(dian)(dian)(dian)路(lu)(lu)安(an)全運行(xing)(xing)電(dian)(dian)(dian)阻保(bao)(bao)(bao)(bao)險(xian)絲(si)的(de)(de)(de)電(dian)(dian)(dian)阻在(zai)整個(ge)電(dian)(dian)(dian)路(lu)(lu)中(zhong)(zhong)并不(bu)重要。由于安(an)培數小于1的(de)(de)(de)保(bao)(bao)(bao)(bao)險(xian)絲(si)電(dian)(dian)(dian)阻只有幾個(ge)歐姆，所以在(zai)低(di)壓電(dian)(dian)(dian)路(lu)(lu)中(zhong)(zhong)采用(yong)保(bao)(bao)(bao)(bao)險(xian)絲(si)時應考慮這(zhe)個(ge)問題。大部分的(de)(de)(de)保(bao)(bao)(bao)(bao)險(xian)絲(si)是用(yong)溫度(du)(du)系數為(wei)正(zheng)的(de)(de)(de)材料制(zhi)造的(de)(de)(de)，因此，就(jiu)(jiu)有冷電(dian)(dian)(dian)阻和熱電(dian)(dian)(dian)阻之分。4．環(huan)境溫度(du)(du)保(bao)(bao)(bao)(bao)險(xian)絲(si)的(de)(de)(de)電(dian)(dian)(dian)流(liu)承載(zai)能力(li)，其實驗(yan)是在(zai)25℃環(huan)境溫度(du)(du)條(tiao)件(jian)下(xia)進行(xing)(xing)的(de)(de)(de)，這(zhe)種(zhong)實驗(yan)受環(huan)境溫度(du)(du)變化(hua)的(de)(de)(de)影響。環(huan)境溫度(du)(du)越高(gao)(gao)，保(bao)(bao)(bao)(bao)險(xian)絲(si)的(de)(de)(de)工作(zuo)溫度(du)(du)就(jiu)(jiu)越高(gao)(gao)，其壽命也就(jiu)(jiu)越短。相反，在(zai)較(jiao)低(di)的(de)(de)(de)溫度(du)(du)下(xia)運行(xing)(xing)會(hui)(hui)延長(chang)保(bao)(bao)(bao)(bao)險(xian)絲(si)的(de)(de)(de)壽命。深圳(zhen)汽車系列保(bao)(bao)(bao)(bao)險(xian)絲(si)標準(zhun)電(dian)(dian)(dian)路(lu)(lu)中(zhong)(zhong)正(zheng)確安(an)置保(bao)(bao)(bao)(bao)險(xian)絲(si)，保(bao)(bao)(bao)(bao)險(xian)絲(si)就(jiu)(jiu)會(hui)(hui)在(zai)電(dian)(dian)(dian)流(liu)異(yi)常(chang)升(sheng)高(gao)(gao)到(dao)一定的(de)(de)(de)高(gao)(gao)度(du)(du)和熱度(du)(du)的(de)(de)(de)時候，自身熔(rong)(rong)斷(duan)(duan)切斷(duan)(duan)電(dian)(dian)(dian)流(liu)。

因為(wei)它(ta)有(you)一(yi)定(ding)比熱(re)及質量，其熱(re)量的(de)(de)增加就表現在(zai)(zai)(zai)溫度(du)(du)(du)的(de)(de)升(sheng)高上，當(dang)溫度(du)(du)(du)升(sheng)高到保(bao)(bao)險(xian)(xian)絲(si)的(de)(de)熔(rong)點以上時(shi)(shi)保(bao)(bao)險(xian)(xian)絲(si)就發(fa)生了(le)熔(rong)斷(duan)。這就是保(bao)(bao)險(xian)(xian)絲(si)的(de)(de)工作(zuo)(zuo)原理。我們(men)(men)從這個原理中應該知道(dao)，您在(zai)(zai)(zai)設計制造(zao)保(bao)(bao)險(xian)(xian)絲(si)時(shi)(shi)必須(xu)認真地研究您所(suo)選材料(liao)的(de)(de)物(wu)理特性，并確保(bao)(bao)它(ta)們(men)(men)有(you)一(yi)致幾何尺寸。因為(wei)這些因素對保(bao)(bao)險(xian)(xian)絲(si)能(neng)否(fou)正常工作(zuo)(zuo)起了(le)至關重要的(de)(de)作(zuo)(zuo)用(yong)。同樣，您在(zai)(zai)(zai)使用(yong)它(ta)的(de)(de)時(shi)(shi)候，一(yi)定(ding)要正確地安裝(zhuang)它(ta)。電流與(yu)電阻的(de)(de)大小(xiao)確定(ding)了(le)產生熱(re)量的(de)(de)速(su)度(du)(du)(du)，保(bao)(bao)險(xian)(xian)絲(si)的(de)(de)構造(zao)與(yu)其安裝(zhuang)的(de)(de)狀況確定(ding)了(le)熱(re)量耗(hao)散的(de)(de)速(su)度(du)(du)(du)，若產生熱(re)量的(de)(de)速(su)度(du)(du)(du)小(xiao)于熱(re)量耗(hao)散的(de)(de)速(su)度(du)(du)(du)時(shi)(shi)，保(bao)(bao)險(xian)(xian)絲(si)是不(bu)會熔(rong)斷(duan)的(de)(de)。若產生熱(re)量的(de)(de)速(su)度(du)(du)(du)等于熱(re)量耗(hao)散的(de)(de)速(su)度(du)(du)(du)時(shi)(shi)，在(zai)(zai)(zai)相當(dang)長的(de)(de)時(shi)(shi)間內(nei)它(ta)也不(bu)會熔(rong)斷(duan)。

當電(dian)路發(fa)生故障(zhang)或(huo)異(yi)常時(shi)，伴隨(sui)著電(dian)流不(bu)斷升高(gao)，并(bing)且(qie)升玻(bo)璃保險絲管高(gao)的(de)(de)電(dian)流有可能(neng)損壞電(dian)路中的(de)(de)某(mou)些重要器(qi)件(jian)，也(ye)有可能(neng)燒毀電(dian)路甚至造成火災。若(ruo)電(dian)路中正確地安(an)置了保險絲，那么保險絲就會在電(dian)流異(yi)常升高(gao)到(dao)一(yi)定(ding)的(de)(de)高(gao)度(du)(du)和熱(re)度(du)(du)的(de)(de)時(shi)候，自身(shen)熔斷切斷電(dian)流，從而起到(dao)保護電(dian)路安(an)全運行的(de)(de)作用(yong)(yong)。外形(xing)1、條絲狀(zhuang)(zhuang)。早期原始型(xing)(xing)態的(de)(de)保險絲，直接(jie)(jie)以(yi)螺絲鎖定(ding)，用(yong)(yong)于(yu)各(ge)種尺(chi)寸(cun)的(de)(de)舊(jiu)式開(kai)關(guan)、插座。車(che)用(yong)(yong)片(pian)(pian)狀(zhuang)(zhuang)保險絲2、片(pian)(pian)狀(zhuang)(zhuang)（裸片(pian)(pian)狀(zhuang)(zhuang)）。比舊(jiu)式絲狀(zhuang)(zhuang)方便使用(yong)(yong)。3、玻(bo)璃管狀(zhuang)(zhuang)。有幾種不(bu)同尺(chi)寸(cun)，常見于(yu)電(dian)子產品(pin)。6.3x32mm（直徑x長度(du)(du)）5x20mm4、陶瓷(ci)管狀(zhuang)(zhuang)。有幾種不(bu)同形(xing)狀(zhuang)(zhuang)及尺(chi)寸(cun)，可避免玻(bo)璃爆裂。5、塑(su)膠(jiao)片(pian)(pian)狀(zhuang)(zhuang)帶金屬片(pian)(pian)狀(zhuang)(zhuang)接(jie)(jie)腳：汽(qi)車(che)保險絲。6、表面接(jie)(jie)著元件(jian)（SMD）型(xing)(xing)。7、圓柱體(ti)狀(zhuang)(zhuang)，插件(jian)式：直接(jie)(jie)焊接(jie)(jie)于(yu)電(dian)路板上，用(yong)(yong)于(yu)產品(pin)內部。過熱(re)保險絲是(shi)通過熱(re)控(kong)制，而不(bu)考慮當前的(de)(de)電(dian)流過大(da)，但電(dian)器(qi)溫度(du)(du)要是(shi)超過了額定(ding)溫度(du)(du)它就會自動斷開(kai)。

常見的(de)玻(bo)璃管(guan)保(bao)險(xian)(xian)(xian)絲(si)(si)(si)的(de)制造，首(shou)先將二氧化硅材料經過(guo)高溫(wen)拉成直徑5毫(hao)米的(de)透明玻(bo)璃管(guan)，再(zai)剪成長(chang)度(du)30毫(hao)米的(de)長(chang)度(du)，玻(bo)璃管(guan)兩端要(yao)用(yong)(yong)高溫(wen)處理圓滑，以免在穿熔(rong)(rong)絲(si)(si)(si)時玻(bo)璃管(guan)鋒利的(de)邊緣劃傷(shang)熔(rong)(rong)絲(si)(si)(si)。玻(bo)璃管(guan)內放入合金熔(rong)(rong)絲(si)(si)(si)，打印有規格的(de)頂蓋和底(di)蓋用(yong)(yong)高頻與熔(rong)(rong)絲(si)(si)(si)焊接在一起(qi)(qi)。機械自(zi)動檢測保(bao)險(xian)(xian)(xian)絲(si)(si)(si)，彈出檢測不(bu)合格的(de)保(bao)險(xian)(xian)(xian)絲(si)(si)(si)，對(dui)合格的(de)保(bao)險(xian)(xian)(xian)絲(si)(si)(si)進行(xing)包裝。保(bao)險(xian)(xian)(xian)絲(si)(si)(si)(fuse)也被稱為(wei)電流保(bao)險(xian)(xian)(xian)絲(si)(si)(si)，IEC127標準將它定義為(wei)"熔(rong)(rong)斷(duan)體（fuse-link)"。其主要(yao)是起(qi)(qi)過(guo)載保(bao)護(hu)作(zuo)用(yong)(yong)。電路(lu)(lu)中正確安(an)置保(bao)險(xian)(xian)(xian)絲(si)(si)(si)，保(bao)險(xian)(xian)(xian)絲(si)(si)(si)就會在電流異常升(sheng)高到一定的(de)高度(du)和熱度(du)的(de)時候，自(zi)身熔(rong)(rong)斷(duan)切斷(duan)電流，保(bao)護(hu)了電路(lu)(lu)安(an)全運行(xing)。[1]一百多(duo)年前由愛迪(di)明的(de)保(bao)險(xian)(xian)(xian)絲(si)(si)(si)用(yong)(yong)于保(bao)護(hu)當時昂(ang)貴的(de)白熾(chi)燈，隨著時代的(de)發展，保(bao)險(xian)(xian)(xian)絲(si)(si)(si)保(bao)護(hu)電力設備(bei)不(bu)受過(guo)電流過(guo)熱的(de)傷(shang)害(hai)，避免電子設備(bei)因內部故障(zhang)所(suo)引起(qi)(qi)的(de)嚴重傷(shang)害(hai)。保(bao)險(xian)(xian)(xian)絲(si)(si)(si)的(de)操作(zuo)流程(cheng)是什么(me)？武漢高壓(ya)保(bao)險(xian)(xian)(xian)絲(si)(si)(si)SBFW

保(bao)險絲(si)使用時的注(zhu)意事項。北京(jing)貼片(pian)保(bao)險絲(si)EVFP

在(zai)選(xuan)型保險(xian)絲(si)各種(zhong)尺寸形狀是(shi)(shi)主要(yao)取決用(yong)戶應(ying)用(yong)在(zai)那些產品(pin)上然后銷售方則(ze)(ze)提供用(yong)戶所(suo)需設計電(dian)(dian)(dian)(dian)路(lu)的(de)(de)空間和電(dian)(dian)(dian)(dian)流所(suo)需的(de)(de)安(an)(an)裝要(yao)求(qiu)以(yi)及保險(xian)絲(si)尺寸形狀特(te)微等方面(mian)。在(zai)選(xuan)型保險(xian)絲(si)時(shi)要(yao)考(kao)慮自己所(suo)需安(an)(an)規認(ren)證(zheng)(zheng)(zheng)保險(xian)絲(si)如(ru)CCC標(biao)識(shi)(shi)是(shi)(shi)中國安(an)(an)規認(ren)證(zheng)(zheng)(zheng)、UL標(biao)識(shi)(shi)是(shi)(shi)美規安(an)(an)規認(ren)證(zheng)(zheng)(zheng)、ICE標(biao)識(shi)(shi)是(shi)(shi)歐規安(an)(an)規認(ren)證(zheng)(zheng)(zheng)、JIS標(biao)識(shi)(shi)是(shi)(shi)日(ri)規安(an)(an)規認(ren)證(zheng)(zheng)(zheng)等等都是(shi)(shi)取決用(yong)戶所(suo)需要(yao)哪些保險(xian)絲(si)選(xuan)型安(an)(an)規認(ren)證(zheng)(zheng)(zheng)。在(zai)選(xuan)型保險(xian)絲(si)時(shi)要(yao)考(kao)慮到額(e)(e)(e)(e)定電(dian)(dian)(dian)(dian)壓則(ze)(ze)需要(yao)選(xuan)用(yong)大(da)(da)于(yu)(yu)或(huo)(huo)等于(yu)(yu)產品(pin)電(dian)(dian)(dian)(dian)路(lu)所(suo)使(shi)用(yong)有效電(dian)(dian)(dian)(dian)壓值(zhi)，而且保險(xian)絲(si)只能(neng)用(yong)在(zai)小于(yu)(yu)或(huo)(huo)等于(yu)(yu)使(shi)用(yong)有效電(dian)(dian)(dian)(dian)壓電(dian)(dian)(dian)(dian)路(lu)中具體(ti)如(ru)：產品(pin)所(suo)需要(yao)額(e)(e)(e)(e)定電(dian)(dian)(dian)(dian)壓是(shi)(shi)125V的(de)(de)保險(xian)絲(si)則(ze)(ze)不(bu)(bu)(bu)能(neng)大(da)(da)于(yu)(yu)125V額(e)(e)(e)(e)定電(dian)(dian)(dian)(dian)壓不(bu)(bu)(bu)然會發(fa)生一些不(bu)(bu)(bu)必要(yao)事故只能(neng)選(xuan)用(yong)小于(yu)(yu)或(huo)(huo)等于(yu)(yu)125V的(de)(de)額(e)(e)(e)(e)定電(dian)(dian)(dian)(dian)壓。北京貼片保險(xian)絲(si)EVFP

本文(wen)來自沈(shen)陽喜納多(duo)采暖工程有限公(gong)司：//zjlong.cn/Article/59a399641.html