作為(wei)電(dian)(dian)(dian)氣設(she)(she)備(bei)中(zhong)的(de)(de)關(guan)鍵(jian)元件之一(yi)，保(bao)(bao)(bao)(bao)險(xian)(xian)(xian)絲(si)(si)(si)(si)在(zai)電(dian)(dian)(dian)路(lu)(lu)(lu)保(bao)(bao)(bao)(bao)護(hu)(hu)(hu)中(zhong)起著至(zhi)關(guan)重要的(de)(de)作用(yong)(yong)。它可(ke)以在(zai)電(dian)(dian)(dian)路(lu)(lu)(lu)出現(xian)過(guo)載或短(duan)路(lu)(lu)(lu)時(shi)及時(shi)熔(rong)斷，從(cong)(cong)而(er)保(bao)(bao)(bao)(bao)護(hu)(hu)(hu)電(dian)(dian)(dian)路(lu)(lu)(lu)和(he)設(she)(she)備(bei)免受損壞。然而(er)，對于保(bao)(bao)(bao)(bao)險(xian)(xian)(xian)絲(si)(si)(si)(si)的(de)(de)分(fen)類(lei)和(he)使(shi)用(yong)(yong)方法(fa)，很多(duo)人并不(bu)十分(fen)了(le)解。本文將從(cong)(cong)保(bao)(bao)(bao)(bao)險(xian)(xian)(xian)絲(si)(si)(si)(si)的(de)(de)分(fen)類(lei)、特(te)點、選用(yong)(yong)和(he)安裝等方面進行詳細介紹。一(yi)、保(bao)(bao)(bao)(bao)險(xian)(xian)(xian)絲(si)(si)(si)(si)的(de)(de)分(fen)類(lei)根據(ju)不(bu)同的(de)(de)標準，保(bao)(bao)(bao)(bao)險(xian)(xian)(xian)絲(si)(si)(si)(si)可(ke)以分(fen)為(wei)不(bu)同的(de)(de)類(lei)型(xing)。1.根據(ju)工作原理，保(bao)(bao)(bao)(bao)險(xian)(xian)(xian)絲(si)(si)(si)(si)可(ke)以分(fen)為(wei)以下幾類(lei)：(1)熔(rong)斷型(xing)保(bao)(bao)(bao)(bao)險(xian)(xian)(xian)絲(si)(si)(si)(si)：當(dang)電(dian)(dian)(dian)路(lu)(lu)(lu)出現(xian)過(guo)載或短(duan)路(lu)(lu)(lu)時(shi)，電(dian)(dian)(dian)流超過(guo)額定值(zhi)，導(dao)致保(bao)(bao)(bao)(bao)險(xian)(xian)(xian)絲(si)(si)(si)(si)熔(rong)斷，從(cong)(cong)而(er)起到保(bao)(bao)(bao)(bao)護(hu)(hu)(hu)電(dian)(dian)(dian)路(lu)(lu)(lu)的(de)(de)作用(yong)(yong)。這(zhe)種(zhong)保(bao)(bao)(bao)(bao)險(xian)(xian)(xian)絲(si)(si)(si)(si)通(tong)(tong)常用(yong)(yong)于家用(yong)(yong)電(dian)(dian)(dian)器、辦公設(she)(she)備(bei)和(he)汽(qi)車等設(she)(she)備(bei)中(zhong)。(2)電(dian)(dian)(dian)磁型(xing)保(bao)(bao)(bao)(bao)險(xian)(xian)(xian)絲(si)(si)(si)(si)：當(dang)電(dian)(dian)(dian)路(lu)(lu)(lu)中(zhong)電(dian)(dian)(dian)流過(guo)大時(shi)，電(dian)(dian)(dian)磁感應作用(yong)(yong)增強，導(dao)致保(bao)(bao)(bao)(bao)險(xian)(xian)(xian)絲(si)(si)(si)(si)自動(dong)斷開(kai)，從(cong)(cong)而(er)起到保(bao)(bao)(bao)(bao)護(hu)(hu)(hu)電(dian)(dian)(dian)路(lu)(lu)(lu)的(de)(de)作用(yong)(yong)。這(zhe)種(zhong)保(bao)(bao)(bao)(bao)險(xian)(xian)(xian)絲(si)(si)(si)(si)通(tong)(tong)常用(yong)(yong)于電(dian)(dian)(dian)子設(she)(she)備(bei)、醫療(liao)器械和(he)科研(yan)設(she)(she)備(bei)等高(gao)精密(mi)度儀器中(zhong)。(3)溫度保(bao)(bao)(bao)(bao)險(xian)(xian)(xian)絲(si)(si)(si)(si)：當(dang)電(dian)(dian)(dian)路(lu)(lu)(lu)或周(zhou)圍環(huan)境溫度過(guo)高(gao)時(shi)，保(bao)(bao)(bao)(bao)險(xian)(xian)(xian)絲(si)(si)(si)(si)內(nei)的(de)(de)金屬絲(si)(si)(si)(si)受熱(re)膨(peng)脹(zhang)，導(dao)致電(dian)(dian)(dian)路(lu)(lu)(lu)斷開(kai)，從(cong)(cong)而(er)起到保(bao)(bao)(bao)(bao)護(hu)(hu)(hu)電(dian)(dian)(dian)路(lu)(lu)(lu)的(de)(de)作用(yong)(yong)。這(zhe)種(zhong)保(bao)(bao)(bao)(bao)險(xian)(xian)(xian)絲(si)(si)(si)(si)通(tong)(tong)常用(yong)(yong)于家用(yong)(yong)電(dian)(dian)(dian)器、燈具(ju)和(he)電(dian)(dian)(dian)動(dong)工具(ju)等設(she)(she)備(bei)中(zhong)。易于維護(hu)(hu)(hu)的(de)(de)保(bao)(bao)(bao)(bao)險(xian)(xian)(xian)絲(si)(si)(si)(si)，讓您的(de)(de)家庭(ting)更輕松，享受更省心的(de)(de)生(sheng)活。1812L020/60DR

保(bao)(bao)(bao)險(xian)絲(si)(si)(si)(si)(si)的(de)(de)(de)(de)(de)熔(rong)斷(duan)(duan)時(shi)間(jian)熔(rong)斷(duan)(duan)特(te)性(xing)，也稱(cheng)為I-T特(te)性(xing)。這個特(te)性(xing)是主要的(de)(de)(de)(de)(de)性(xing)能指標，根據(ju)熔(rong)斷(duan)(duan)時(shi)間(jian)可以將保(bao)(bao)(bao)險(xian)絲(si)(si)(si)(si)(si)分為快(kuai)熔(rong)、慢(man)熔(rong)、中等速度(du)(du)熔(rong)斷(duan)(duan)。對阻性(xing)電(dian)(dian)路或保(bao)(bao)(bao)護敏感(gan)器件的(de)(de)(de)(de)(de)電(dian)(dian)路中，應選用快(kuai)熔(rong)斷(duan)(duan)保(bao)(bao)(bao)險(xian)絲(si)(si)(si)(si)(si)；對容性(xing)和感(gan)性(xing)電(dian)(dian)路或有較大脈沖(chong)的(de)(de)(de)(de)(de)電(dian)(dian)路，應選用慢(man)熔(rong)斷(duan)(duan)保(bao)(bao)(bao)險(xian)絲(si)(si)(si)(si)(si)。如圖(tu)是某系列快(kuai)熔(rong)保(bao)(bao)(bao)險(xian)絲(si)(si)(si)(si)(si)的(de)(de)(de)(de)(de)I-T特(te)性(xing)。它表明(ming)了不同(tong)電(dian)(dian)流負載時(shi)保(bao)(bao)(bao)險(xian)絲(si)(si)(si)(si)(si)熔(rong)斷(duan)(duan)的(de)(de)(de)(de)(de)時(shi)間(jian)范圍(wei)。使用保(bao)(bao)(bao)險(xian)絲(si)(si)(si)(si)(si)注意(yi)事項4,、溫(wen)度(du)(du)對保(bao)(bao)(bao)險(xian)絲(si)(si)(si)(si)(si)的(de)(de)(de)(de)(de)影(ying)響(xiang)同(tong)半導體一樣，保(bao)(bao)(bao)險(xian)絲(si)(si)(si)(si)(si)也是溫(wen)度(du)(du)敏感(gan)器件。隨著溫(wen)度(du)(du)升(sheng)高，其(qi)額(e)定工(gong)作電(dian)(dian)流需要進(jin)行相(xiang)應的(de)(de)(de)(de)(de)降(jiang)額(e)。這很容易理(li)解，本身(shen)保(bao)(bao)(bao)險(xian)絲(si)(si)(si)(si)(si)就是依靠熱量來將其(qi)熔(rong)斷(duan)(duan)的(de)(de)(de)(de)(de)，其(qi)溫(wen)度(du)(du)等于環境溫(wen)度(du)(du)加上工(gong)作時(shi)的(de)(de)(de)(de)(de)溫(wen)升(sheng)，當環境溫(wen)度(du)(du)較高時(shi)，有必(bi)要使其(qi)自身(shen)溫(wen)升(sheng)降(jiang)低，因此需對額(e)定電(dian)(dian)流降(jiang)額(e)的(de)(de)(de)(de)(de)。PTC12066V200我們的(de)(de)(de)(de)(de)保(bao)(bao)(bao)險(xian)絲(si)(si)(si)(si)(si)嚴(yan)格按照國(guo)際標準生產(chan)，品質可靠。

影(ying)(ying)響(xiang)保(bao)(bao)(bao)(bao)險(xian)(xian)(xian)(xian)(xian)絲(si)(si)(si)(si)(si)(si)壽(shou)命(ming)三(san)大因(yin)素如(ru)下（1）接(jie)觸(chu)件。我們知(zhi)道保(bao)(bao)(bao)(bao)險(xian)(xian)(xian)(xian)(xian)絲(si)(si)(si)(si)(si)(si)是一個(ge)相對較小的(de)(de)(de)(de)(de)(de)(de)(de)設(she)備(bei)。當(dang)應(ying)(ying)用(yong)(yong)于電(dian)路時，保(bao)(bao)(bao)(bao)險(xian)(xian)(xian)(xian)(xian)絲(si)(si)(si)(si)(si)(si)接(jie)觸(chu)管夾(jia)、連接(jie)電(dian)線的(de)(de)(de)(de)(de)(de)(de)(de)長度(du)(du)和(he)截面積。保(bao)(bao)(bao)(bao)險(xian)(xian)(xian)(xian)(xian)絲(si)(si)(si)(si)(si)(si)坐夾(jia)子(zi)之間的(de)(de)(de)(de)(de)(de)(de)(de)接(jie)觸(chu)電(dian)阻過大會(hui)損害保(bao)(bao)(bao)(bao)險(xian)(xian)(xian)(xian)(xian)絲(si)(si)(si)(si)(si)(si)的(de)(de)(de)(de)(de)(de)(de)(de)壽(shou)命(ming)，在UL標(biao)準中(zhong)(zhong)，實(shi)驗時保(bao)(bao)(bao)(bao)險(xian)(xian)(xian)(xian)(xian)絲(si)(si)(si)(si)(si)(si)和(he)夾(jia)子(zi)的(de)(de)(de)(de)(de)(de)(de)(de)接(jie)觸(chu)電(dian)阻不足3毫歐。（2）工(gong)(gong)作(zuo)(zuo)環(huan)境溫度(du)(du)。保(bao)(bao)(bao)(bao)險(xian)(xian)(xian)(xian)(xian)絲(si)(si)(si)(si)(si)(si)的(de)(de)(de)(de)(de)(de)(de)(de)參數值都在標(biao)準溫度(du)(du)環(huan)境下，工(gong)(gong)作(zuo)(zuo)環(huan)境過高會(hui)影(ying)(ying)響(xiang)保(bao)(bao)(bao)(bao)險(xian)(xian)(xian)(xian)(xian)絲(si)(si)(si)(si)(si)(si)的(de)(de)(de)(de)(de)(de)(de)(de)壽(shou)命(ming)，過低會(hui)影(ying)(ying)響(xiang)保(bao)(bao)(bao)(bao)險(xian)(xian)(xian)(xian)(xian)絲(si)(si)(si)(si)(si)(si)參數值的(de)(de)(de)(de)(de)(de)(de)(de)變化(hua)(hua)(hua)(hua)，慢(man)熔保(bao)(bao)(bao)(bao)險(xian)(xian)(xian)(xian)(xian)絲(si)(si)(si)(si)(si)(si)，如(ru)錫(xi)(xi)球(qiu)，當(dang)溫度(du)(du)約(yue)(yue)為(wei)160度(du)(du)時，錫(xi)(xi)開始向金屬絲(si)(si)(si)(si)(si)(si)擴散(san)；當(dang)溫度(du)(du)約(yue)(yue)為(wei)200度(du)(du)時，熔體開始劇(ju)烈氧化(hua)(hua)(hua)(hua)。隨著熔絲(si)(si)(si)(si)(si)(si)由外(wai)向里(li)的(de)(de)(de)(de)(de)(de)(de)(de)氧化(hua)(hua)(hua)(hua)、多次(ci)(ci)的(de)(de)(de)(de)(de)(de)(de)(de)多次(ci)(ci)的(de)(de)(de)(de)(de)(de)(de)(de)擴散(san)、熱應(ying)(ying)力(li)疲(pi)勞等，保(bao)(bao)(bao)(bao)險(xian)(xian)(xian)(xian)(xian)絲(si)(si)(si)(si)(si)(si)的(de)(de)(de)(de)(de)(de)(de)(de)壽(shou)命(ming)會(hui)逐(zhu)漸的(de)(de)(de)(de)(de)(de)(de)(de)縮短。因(yin)此(ci)，建(jian)議延遲(chi)保(bao)(bao)(bao)(bao)險(xian)(xian)(xian)(xian)(xian)絲(si)(si)(si)(si)(si)(si)不應(ying)(ying)長時間在150度(du)(du)以上的(de)(de)(de)(de)(de)(de)(de)(de)環(huan)境中(zhong)(zhong)工(gong)(gong)作(zuo)(zuo)，快速熔斷保(bao)(bao)(bao)(bao)險(xian)(xian)(xian)(xian)(xian)絲(si)(si)(si)(si)(si)(si)不應(ying)(ying)長時間在175~225℃以上工(gong)(gong)作(zuo)(zuo)。（3）脈(mo)沖(chong)(chong)電(dian)流。在實(shi)際(ji)應(ying)(ying)用(yong)(yong)中(zhong)(zhong)，保(bao)(bao)(bao)(bao)險(xian)(xian)(xian)(xian)(xian)絲(si)(si)(si)(si)(si)(si)經常(chang)會(hui)遇到脈(mo)沖(chong)(chong)電(dian)流。沒(mei)有(you)脈(mo)沖(chong)(chong)電(dian)流，保(bao)(bao)(bao)(bao)險(xian)(xian)(xian)(xian)(xian)絲(si)(si)(si)(si)(si)(si)的(de)(de)(de)(de)(de)(de)(de)(de)險(xian)(xian)(xian)(xian)(xian)絲(si)(si)(si)(si)(si)(si)的(de)(de)(de)(de)(de)(de)(de)(de)使(shi)用(yong)(yong)壽(shou)命(ming)到，因(yin)為(wei)脈(mo)沖(chong)(chong)沖(chong)(chong)擊會(hui)產生熱循環(huan)，從而(er)導致熔斷器的(de)(de)(de)(de)(de)(de)(de)(de)擴散(san)、氧化(hua)(hua)(hua)(hua)和(he)熱應(ying)(ying)力(li)，甚至(zhi)加(jia)速。保(bao)(bao)(bao)(bao)險(xian)(xian)(xian)(xian)(xian)絲(si)(si)(si)(si)(si)(si)隨著脈(mo)沖(chong)(chong)能量和(he)次(ci)(ci)數的(de)(de)(de)(de)(de)(de)(de)(de)增(zeng)加(jia)而(er)老化(hua)(hua)(hua)(hua)，保(bao)(bao)(bao)(bao)險(xian)(xian)(xian)(xian)(xian)絲(si)(si)(si)(si)(si)(si)的(de)(de)(de)(de)(de)(de)(de)(de)抗沖(chong)(chong)擊壽(shou)命(ming)取(qu)決于脈(mo)沖(chong)(chong)的(de)(de)(de)(de)(de)(de)(de)(de)I2t占保(bao)(bao)(bao)(bao)險(xian)(xian)(xian)(xian)(xian)絲(si)(si)(si)(si)(si)(si)自(zi)身I2t的(de)(de)(de)(de)(de)(de)(de)(de)比例(li)。

保(bao)險(xian)(xian)絲(si)的(de)(de)阻值(zhi)(zhi)保(bao)險(xian)(xian)絲(si)有(you)電(dian)(dian)(dian)阻值(zhi)(zhi)，其(qi)實就(jiu)連(lian)導(dao)(dao)線也有(you)電(dian)(dian)(dian)阻，只是導(dao)(dao)線的(de)(de)電(dian)(dian)(dian)阻很小(xiao)（導(dao)(dao)體的(de)(de)性質(zhi)），在一般(ban)的(de)(de)電(dian)(dian)(dian)路(lu)(lu)(lu)計算中，我們(men)通(tong)常(chang)不(bu)計，但保(bao)險(xian)(xian)絲(si)的(de)(de)電(dian)(dian)(dian)阻明(ming)顯要(yao)比等長導(dao)(dao)線的(de)(de)電(dian)(dian)(dian)阻要(yao)大(da)，這樣它才能起到保(bao)護(hu)電(dian)(dian)(dian)路(lu)(lu)(lu)的(de)(de)作用(yong)。保(bao)險(xian)(xian)絲(si)上標有(you)“5A250V”，說(shuo)明(ming)保(bao)險(xian)(xian)絲(si)允許(xu)通(tong)過(guo)的(de)(de)比較(jiao)大(da)電(dian)(dian)(dian)流為(wei)5A，稱(cheng)(cheng)為(wei)額(e)(e)定(ding)電(dian)(dian)(dian)流；允許(xu)通(tong)過(guo)的(de)(de)比較(jiao)大(da)電(dian)(dian)(dian)壓(ya)250V，稱(cheng)(cheng)為(wei)額(e)(e)定(ding)電(dian)(dian)(dian)壓(ya)。如果(guo)(guo)電(dian)(dian)(dian)流或電(dian)(dian)(dian)壓(ya)超過(guo)額(e)(e)定(ding)值(zhi)(zhi)，保(bao)險(xian)(xian)絲(si)就(jiu)會熔斷(duan)，使(shi)電(dian)(dian)(dian)路(lu)(lu)(lu)斷(duan)路(lu)(lu)(lu)，從而(er)保(bao)護(hu)了用(yong)電(dian)(dian)(dian)器（如果(guo)(guo)沒保(bao)險(xian)(xian)絲(si)，用(yong)電(dian)(dian)(dian)器可能被燒壞(huai)）。易(yi)于使(shi)用(yong)，讓您的(de)(de)家庭更輕松，享受更舒適的(de)(de)生(sheng)活。

常見的(de)(de)保(bao)(bao)(bao)(bao)險(xian)(xian)絲(si)(si)(si)一(yi)般根據保(bao)(bao)(bao)(bao)護形(xing)式、使用(yong)(yong)范圍、體積大(da)小(xiao)、額定電(dian)壓(ya)、中斷(duan)能(neng)力、外觀(guan)性狀、熔斷(duan)速(su)度(du)、國際標準(zhun)八個(ge)維(wei)度(du)進行(xing)分(fen)類劃分(fen)。保(bao)(bao)(bao)(bao)險(xian)(xian)絲(si)(si)(si)一(yi)般分(fen)為一(yi)次(ci)(ci)性保(bao)(bao)(bao)(bao)險(xian)(xian)絲(si)(si)(si)跟自(zi)恢(hui)復保(bao)(bao)(bao)(bao)險(xian)(xian)絲(si)(si)(si)兩(liang)種。保(bao)(bao)(bao)(bao)險(xian)(xian)絲(si)(si)(si)(fuse)也被稱(cheng)為電(dian)流保(bao)(bao)(bao)(bao)險(xian)(xian)絲(si)(si)(si)，IEC127標準(zhun)將(jiang)它定義為"熔斷(duan)體（fuse-link)"。其(qi)主要是(shi)起(qi)過(guo)載保(bao)(bao)(bao)(bao)護作用(yong)(yong)。電(dian)路(lu)中正確安置保(bao)(bao)(bao)(bao)險(xian)(xian)絲(si)(si)(si)，保(bao)(bao)(bao)(bao)險(xian)(xian)絲(si)(si)(si)就會在電(dian)流異常升高(gao)(gao)到一(yi)定的(de)(de)高(gao)(gao)度(du)和熱(re)度(du)的(de)(de)時候，自(zi)身(shen)熔斷(duan)切斷(duan)電(dian)流，保(bao)(bao)(bao)(bao)護了電(dian)路(lu)安全運行(xing)。自(zi)恢(hui)復保(bao)(bao)(bao)(bao)險(xian)(xian)絲(si)(si)(si)，是(shi)一(yi)種過(guo)流電(dian)子(zi)(zi)保(bao)(bao)(bao)(bao)護元件(jian)，采用(yong)(yong)高(gao)(gao)分(fen)子(zi)(zi)有機聚合(he)物在高(gao)(gao)壓(ya)、高(gao)(gao)溫，硫化反應的(de)(de)條件(jian)下，摻(chan)加導(dao)電(dian)粒子(zi)(zi)材料(liao)后(hou)，經(jing)過(guo)特(te)殊的(de)(de)工藝加工而(er)成。傳統保(bao)(bao)(bao)(bao)險(xian)(xian)絲(si)(si)(si)過(guo)流保(bao)(bao)(bao)(bao)護，能(neng)保(bao)(bao)(bao)(bao)護一(yi)次(ci)(ci)，燒斷(duan)了需更(geng)換(huan)，而(er)自(zi)恢(hui)復保(bao)(bao)(bao)(bao)險(xian)(xian)絲(si)(si)(si)具(ju)有過(guo)流過(guo)熱(re)保(bao)(bao)(bao)(bao)護，自(zi)動恢(hui)復雙重功(gong)能(neng)。我(wo)們的(de)(de)保(bao)(bao)(bao)(bao)險(xian)(xian)絲(si)(si)(si)始終把客戶(hu)滿意度(du)放在，竭誠(cheng)為您服(fu)務(wu)。04581.25DR

專業品(pin)質的保險絲(si)，讓您(nin)無(wu)需擔心品(pin)質問題,享受更(geng)安全(quan)的生(sheng)活。1812L020/60DR

RP是電(dian)(dian)(dian)(dian)流(liu)(liu)設置電(dian)(dian)(dian)(dian)位器(qi)，采用0.5w、25kΩ帶刻度旋鈕的(de)多(duo)圈精密電(dian)(dian)(dian)(dian)位器(qi)，這樣校(xiao)準(zhun)和使(shi)用都非常(chang)方便。校(xiao)準(zhun)裝置也很簡單(dan)：將一(yi)自耦(ou)變(bian)(bian)(bian)壓(ya)(ya)器(qi)的(de)輸(shu)(shu)出端接一(yi)根1200w左右的(de)電(dian)(dian)(dian)(dian)熱絲(si)．變(bian)(bian)(bian)壓(ya)(ya)器(qi)的(de)輸(shu)(shu)入端與一(yi)只10～20A交流(liu)(liu)電(dian)(dian)(dian)(dian)流(liu)(liu)表和本電(dian)(dian)(dian)(dian)子熔(rong)絲(si)電(dian)(dian)(dian)(dian)路串(chuan)聯后(hou)(hou)，接220V交流(liu)(liu)市(shi)電(dian)(dian)(dian)(dian)。高、低擋電(dian)(dian)(dian)(dian)流(liu)(liu)范圍(wei)分(fen)別進行校(xiao)準(zhun)。以低擋校(xiao)準(zhun)為(wei)例．校(xiao)準(zhun)方法(fa)(fa)如(ru)下：(1)將RP調(diao)至(zhi)中(zhong)間刻度(5.0)，給(gei)自耦(ou)變(bian)(bian)(bian)壓(ya)(ya)器(qi)通(tong)(tong)電(dian)(dian)(dian)(dian)。記下RP此(ci)時的(de)精確刻度(如(ru)6.2等)，此(ci)刻度對(dui)應的(de)電(dian)(dian)(dian)(dian)流(liu)(liu)值即為(wei)1A。(2)將RP調(diao)至(zhi)中(zhong)間刻度，自耦(ou)變(bian)(bian)(bian)壓(ya)(ya)器(qi)回零(ling)通(tong)(tong)電(dian)(dian)(dian)(dian)后(hou)(hou)按一(yi)下復位開(kai)關S1，再調(diao)自耦(ou)變(bian)(bian)(bian)壓(ya)(ya)器(qi)使(shi)電(dian)(dian)(dian)(dian)流(liu)(liu)表讀數為(wei)2A(或1.5A等)，轉動(dong)RP至(zhi)電(dian)(dian)(dian)(dian)子熔(rong)絲(si)斷(duan)開(kai)，并記下RP刻度值。(3)依此(ci)法(fa)(fa)重復上(shang)述過(guo)程．直至(zhi)高、低擋電(dian)(dian)(dian)(dian)流(liu)(liu)范圍(wei)內(nei)的(de)各個(ge)保險電(dian)(dian)(dian)(dian)流(liu)(liu)值均校(xiao)準(zhun)為(wei)止。1812L020/60DR

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