电(dian)力(li)熔(rong)(rong)(rong)(rong)断(duan)(duan)器(qi)(qi)的(de)(de)(de)(de)(de)结(jie)构特性(xing)电(dian)力(li)熔(rong)(rong)(rong)(rong)断(duan)(duan)器(qi)(qi)的(de)(de)(de)(de)(de)结(jie)构与熔(rong)(rong)(rong)(rong)断(duan)(duan)器(qi)(qi)的(de)(de)(de)(de)(de)结(jie)构大(da)(da)致相(xiang)(xiang)同。它主要(yao)由熔(rong)(rong)(rong)(rong)体(ti)、外壳(qiao)和支座3部分(fen)组成(cheng)，其(qi)中熔(rong)(rong)(rong)(rong)体(ti)是控制熔(rong)(rong)(rong)(rong)断(duan)(duan)特性(xing)的(de)(de)(de)(de)(de)关键(jian)元件。熔(rong)(rong)(rong)(rong)体(ti)的(de)(de)(de)(de)(de)材料(liao)、尺(chi)寸(cun)(cun)和形状(zhuang)(zhuang)决定(ding)了熔(rong)(rong)(rong)(rong)断(duan)(duan)特性(xing)。熔(rong)(rong)(rong)(rong)体(ti)材料(liao)分(fen)为(wei)(wei)(wei)低(di)熔(rong)(rong)(rong)(rong)点(dian)(dian)和高(gao)熔(rong)(rong)(rong)(rong)点(dian)(dian)两类(lei)。低(di)熔(rong)(rong)(rong)(rong)点(dian)(dian)材料(liao)如铅和铅合(he)金，其(qi)熔(rong)(rong)(rong)(rong)点(dian)(dian)低(di)容易熔(rong)(rong)(rong)(rong)断(duan)(duan)，由于(yu)其(qi)电(dian)阻(zu)率较(jiao)大(da)(da)，故制成(cheng)熔(rong)(rong)(rong)(rong)体(ti)的(de)(de)(de)(de)(de)截(jie)面(mian)尺(chi)寸(cun)(cun)较(jiao)大(da)(da)，熔(rong)(rong)(rong)(rong)断(duan)(duan)时产(chan)生的(de)(de)(de)(de)(de)金属(shu)蒸(zheng)气较(jiao)多，只适用于(yu)低(di)分(fen)断(duan)(duan)能(neng)力(li)的(de)(de)(de)(de)(de)熔(rong)(rong)(rong)(rong)断(duan)(duan)器(qi)(qi)。高(gao)熔(rong)(rong)(rong)(rong)点(dian)(dian)材料(liao)如铜(tong)、银(yin)，其(qi)熔(rong)(rong)(rong)(rong)点(dian)(dian)高(gao)，不(bu)容易熔(rong)(rong)(rong)(rong)断(duan)(duan)，但由于(yu)其(qi)电(dian)阻(zu)率较(jiao)低(di)，可(ke)制成(cheng)比低(di)熔(rong)(rong)(rong)(rong)点(dian)(dian)熔(rong)(rong)(rong)(rong)体(ti)较(jiao)小(xiao)的(de)(de)(de)(de)(de)截(jie)面(mian)尺(chi)寸(cun)(cun)，熔(rong)(rong)(rong)(rong)断(duan)(duan)时产(chan)生的(de)(de)(de)(de)(de)金属(shu)蒸(zheng)气少，适用于(yu)高(gao)分(fen)断(duan)(duan)能(neng)力(li)的(de)(de)(de)(de)(de)熔(rong)(rong)(rong)(rong)断(duan)(duan)器(qi)(qi)。熔(rong)(rong)(rong)(rong)体(ti)的(de)(de)(de)(de)(de)形状(zhuang)(zhuang)分(fen)为(wei)(wei)(wei)丝(si)状(zhuang)(zhuang)和带状(zhuang)(zhuang)两种。改(gai)变(bian)变(bian)截(jie)面(mian)的(de)(de)(de)(de)(de)形状(zhuang)(zhuang)可(ke)明显改(gai)变(bian)熔(rong)(rong)(rong)(rong)断(duan)(duan)器(qi)(qi)的(de)(de)(de)(de)(de)熔(rong)(rong)(rong)(rong)断(duan)(duan)特性(xing)。熔(rong)(rong)(rong)(rong)断(duan)(duan)器(qi)(qi)的(de)(de)(de)(de)(de)优点(dian)(dian)：①选择性(xing)好。上(shang)(shang)(shang)下级熔(rong)(rong)(rong)(rong)断(duan)(duan)器(qi)(qi)的(de)(de)(de)(de)(de)熔(rong)(rong)(rong)(rong)断(duan)(duan)体(ti)额定(ding)电(dian)流(liu)(liu)只要(yao)符合(he)国标和IEC标准规定(ding)的(de)(de)(de)(de)(de)过电(dian)流(liu)(liu)选择比为(wei)(wei)(wei)1.6：1的(de)(de)(de)(de)(de)要(yao)求(qiu)，即上(shang)(shang)(shang)级熔(rong)(rong)(rong)(rong)断(duan)(duan)体(ti)额定(ding)电(dian)流(liu)(liu)不(bu)小(xiao)于(yu)下级的(de)(de)(de)(de)(de)该值(zhi)的(de)(de)(de)(de)(de)，就视为(wei)(wei)(wei)上(shang)(shang)(shang)下级能(neng)有选择性(xing)切断(duan)(duan)故障电(dian)流(liu)(liu)；②限流(liu)(liu)特性(xing)好，分(fen)断(duan)(duan)能(neng)力(li)高(gao)；③相(xiang)(xiang)对(dui)尺(chi)寸(cun)(cun)较(jiao)小(xiao)；④价(jia)格较(jiao)便宜。浙江(jiang)银(yin)河(he)熔(rong)(rong)(rong)(rong)断(duan)(duan)器(qi)(qi)有限公(gong)司生产(chan)的(de)(de)(de)(de)(de)光伏熔(rong)(rong)(rong)(rong)断(duan)(duan)器(qi)(qi)产(chan)品远销美洲，欧洲，非洲，亚洲等地，期待与您(nin)的(de)(de)(de)(de)(de)合(he)作。温州快速熔(rong)(rong)(rong)(rong)断(duan)(duan)器(qi)(qi)批发价(jia)

保(bao)(bao)险(xian)(xian)(xian)(xian)丝(si)选(xuan)用(yong)流(liu)程:A.确(que)(que)定(ding)(ding)安全(quan)(quan)标志:根据产(chan)品将销(xiao)售的(de)(de)(de)(de)(de)市场要求,选(xuan)定(ding)(ding)保(bao)(bao)险(xian)(xian)(xian)(xian)丝(si)的(de)(de)(de)(de)(de)安全(quan)(quan)认(ren)证标志及安全(quan)(quan)标准(zhun)(zhun).(UL标准(zhun)(zhun)或IEC标准(zhun)(zhun)保(bao)(bao)险(xian)(xian)(xian)(xian)丝(si)).B.确(que)(que)定(ding)(ding)外型(xing)尺寸:根据安装空间和(he)确(que)(que)定(ding)(ding)的(de)(de)(de)(de)(de)安全(quan)(quan)认(ren)证标志及安全(quan)(quan)标准(zhun)(zhun),选(xuan)定(ding)(ding)的(de)(de)(de)(de)(de)保(bao)(bao)险(xian)(xian)(xian)(xian)丝(si)的(de)(de)(de)(de)(de)外型(xing)尺寸.C.确(que)(que)定(ding)(ding)型(xing)号:根据被(bei)保(bao)(bao)护(hu)回(hui)路(lu)(lu)的(de)(de)(de)(de)(de)电(dian)(dian)(dian)流(liu)特性(xing)(xing),选(xuan)定(ding)(ding)保(bao)(bao)险(xian)(xian)(xian)(xian)丝(si)的(de)(de)(de)(de)(de)型(xing)号.例(li)(li)如(ru),被(bei)保(bao)(bao)护(hu)回(hui)路(lu)(lu)的(de)(de)(de)(de)(de)电(dian)(dian)(dian)流(liu)特性(xing)(xing)为恒定(ding)(ding)电(dian)(dian)(dian)流(liu),则(ze)选(xuan)用(yong)快速熔断型(xing).D.确(que)(que)定(ding)(ding)额(e)(e)(e)定(ding)(ding)电(dian)(dian)(dian)压(ya):根据被(bei)保(bao)(bao)护(hu)回(hui)路(lu)(lu)的(de)(de)(de)(de)(de)输入(ru)电(dian)(dian)(dian)压(ya)及使用(yong)要求,确(que)(que)定(ding)(ding)保(bao)(bao)险(xian)(xian)(xian)(xian)丝(si)的(de)(de)(de)(de)(de)额(e)(e)(e)定(ding)(ding)电(dian)(dian)(dian)压(ya).例(li)(li)如(ru),350V等;但考虑成本(ben)因素,不必选(xuan)用(yong)过高的(de)(de)(de)(de)(de)额(e)(e)(e)定(ding)(ding)电(dian)(dian)(dian)压(ya).E.确(que)(que)定(ding)(ding)额(e)(e)(e)定(ding)(ding)电(dian)(dian)(dian)流(liu)（Min）:根据被(bei)保(bao)(bao)护(hu)回(hui)路(lu)(lu)的(de)(de)(de)(de)(de)稳定(ding)(ding)工作电(dian)(dian)(dian)流(liu)及相类的(de)(de)(de)(de)(de)使用(yong)折(zhe)损系数(shu),初(chu)步确(que)(que)定(ding)(ding)保(bao)(bao)险(xian)(xian)(xian)(xian)丝(si)的(de)(de)(de)(de)(de)额(e)(e)(e)定(ding)(ding)电(dian)(dian)(dian)流(liu).F确(que)(que)定(ding)(ding)保(bao)(bao)险(xian)(xian)(xian)(xian)丝(si)的(de)(de)(de)(de)(de)IT值(zhi)(zhi)(zhi)(Min).G.确(que)(que)定(ding)(ding)保(bao)(bao)险(xian)(xian)(xian)(xian)丝(si)的(de)(de)(de)(de)(de)额(e)(e)(e)定(ding)(ding)电(dian)(dian)(dian)流(liu):根据额(e)(e)(e)定(ding)(ding)电(dian)(dian)(dian)流(liu)（Min）和(he)IT值(zhi)(zhi)(zhi)（Min）,查产(chan)品目录中(zhong)对应(ying)型(xing)号规格,取即大(da)于(yu)额(e)(e)(e)定(ding)(ding)电(dian)(dian)(dian)流(liu)值(zhi)(zhi)(zhi)（Min）且(qie)其IT值(zhi)(zhi)(zhi)也(ye)大(da)于(yu)IT值(zhi)(zhi)(zhi)（Min）的(de)(de)(de)(de)(de)初(chu)级额(e)(e)(e)定(ding)(ding)电(dian)(dian)(dian)流(liu)规格为选(xuan)用(yong)保(bao)(bao)险(xian)(xian)(xian)(xian)丝(si)的(de)(de)(de)(de)(de)额(e)(e)(e)定(ding)(ding)电(dian)(dian)(dian)流(liu)。陕西直流(liu)熔断器(qi)型(xing)号浙江银(yin)河熔断器(qi)有(you)限公司是一家生产(chan)和(he)定(ding)(ding)制各(ge)种熔断器(qi)的(de)(de)(de)(de)(de)专业公司，期待为您服务！

熔(rong)(rong)(rong)(rong)断(duan)(duan)(duan)器(qi)(qi)(qi)主(zhu)要的(de)(de)(de)(de)技术指(zhi)标(biao)。1额定(ding)(ding)(ding)电(dian)(dian)(dian)压(ya)：熔(rong)(rong)(rong)(rong)断(duan)(duan)(duan)器(qi)(qi)(qi)的(de)(de)(de)(de)额定(ding)(ding)(ding)电(dian)(dian)(dian)压(ya)应(ying)(ying)大于适用(yong)电(dian)(dian)(dian)气(qi)系(xi)(xi)统的(de)(de)(de)(de)标(biao)称电(dian)(dian)(dian)压(ya)，以适应(ying)(ying)可能出现的(de)(de)(de)(de)过(guo)电(dian)(dian)(dian)压(ya)情(qing)况(kuang)，在(zai)过(guo)电(dian)(dian)(dian)压(ya)的(de)(de)(de)(de)情(qing)况(kuang)下，熔(rong)(rong)(rong)(rong)断(duan)(duan)(duan)器(qi)(qi)(qi)可能会(hui)发生炸裂(lie)等危险的(de)(de)(de)(de)情(qing)况(kuang)。2额定(ding)(ding)(ding)电(dian)(dian)(dian)流和持(chi)续(xu)工(gong)(gong)(gong)作电(dian)(dian)(dian)流：额定(ding)(ding)(ding)电(dian)(dian)(dian)流用(yong)于标(biao)示熔(rong)(rong)(rong)(rong)断(duan)(duan)(duan)器(qi)(qi)(qi)的(de)(de)(de)(de)规格(ge)，持(chi)续(xu)工(gong)(gong)(gong)作电(dian)(dian)(dian)流是指(zhi)在(zai)比较高的(de)(de)(de)(de)环(huan)(huan)境温(wen)度(du)下，持(chi)续(xu)通过(guo)电(dian)(dian)(dian)路的(de)(de)(de)(de)最(zui)大电(dian)(dian)(dian)流，持(chi)续(xu)工(gong)(gong)(gong)作电(dian)(dian)(dian)流应(ying)(ying)小于额定(ding)(ding)(ding)电(dian)(dian)(dian)流。3连接电(dian)(dian)(dian)阻(zu)：较大的(de)(de)(de)(de)连接电(dian)(dian)(dian)阻(zu)会(hui)导致熔(rong)(rong)(rong)(rong)断(duan)(duan)(duan)器(qi)(qi)(qi)接触点(dian)的(de)(de)(de)(de)温(wen)度(du)升高，工(gong)(gong)(gong)作电(dian)(dian)(dian)流会(hui)随之而降低。4环(huan)(huan)境温(wen)度(du)：熔(rong)(rong)(rong)(rong)断(duan)(duan)(duan)器(qi)(qi)(qi)的(de)(de)(de)(de)特(te)性(xing)曲线跟环(huan)(huan)境温(wen)度(du)密切相关，超出其使用(yong)的(de)(de)(de)(de)温(wen)度(du)范围，会(hui)引起(qi)熔(rong)(rong)(rong)(rong)断(duan)(duan)(duan)器(qi)(qi)(qi)内部电(dian)(dian)(dian)阻(zu)的(de)(de)(de)(de)升高，进一(yi)步使得其温(wen)度(du)升高，这样使得熔(rong)(rong)(rong)(rong)断(duan)(duan)(duan)器(qi)(qi)(qi)会(hui)有降额现象产生，因(yin)此在(zai)选择熔(rong)(rong)(rong)(rong)断(duan)(duan)(duan)器(qi)(qi)(qi)时，应(ying)(ying)考虑环(huan)(huan)境温(wen)度(du)，采用(yong)相应(ying)(ying)的(de)(de)(de)(de)降额系(xi)(xi)数。5时间(jian)-电(dian)(dian)(dian)流特(te)性(xing)：熔(rong)(rong)(rong)(rong)断(duan)(duan)(duan)器(qi)(qi)(qi)归根到底是属于电(dian)(dian)(dian)流保(bao)护，在(zai)电(dian)(dian)(dian)线起(qi)火前(qian)将电(dian)(dian)(dian)路切断(duan)(duan)(duan)，因(yin)此，熔(rong)(rong)(rong)(rong)断(duan)(duan)(duan)器(qi)(qi)(qi)的(de)(de)(de)(de)选择应(ying)(ying)在(zai)电(dian)(dian)(dian)线运行(xing)温(wen)度(du)Tmax超过(guo)之前(qian)熔(rong)(rong)(rong)(rong)断(duan)(duan)(duan)，这样才(cai)能保(bao)证(zheng)系(xi)(xi)统的(de)(de)(de)(de)安全。6选择性(xing)：熔(rong)(rong)(rong)(rong)断(duan)(duan)(duan)器(qi)(qi)(qi)应(ying)(ying)分层(ceng)设计，设计的(de)(de)(de)(de)过(guo)程(cheng)中，应(ying)(ying)保(bao)证(zheng)底层(ceng)熔(rong)(rong)(rong)(rong)断(duan)(duan)(duan)器(qi)(qi)(qi)先熔(rong)(rong)(rong)(rong)断(duan)(duan)(duan)，高层(ceng)熔(rong)(rong)(rong)(rong)断(duan)(duan)(duan)器(qi)(qi)(qi)后(hou)熔(rong)(rong)(rong)(rong)断(duan)(duan)(duan)或不(bu)熔(rong)(rong)(rong)(rong)断(duan)(duan)(duan)，这样才(cai)能确(que)保(bao)单路故障不(bu)会(hui)影响到更高层(ceng)系(xi)(xi)统的(de)(de)(de)(de)电(dian)(dian)(dian)气(qi)系(xi)(xi)统正常工(gong)(gong)(gong)作。

在(zai)新能源汽(qi)车(che)(che)中，包括纯电动和(he)(he)混合(he)(he)动力(li)，电路保护元件或者说熔(rong)(rong)断(duan)(duan)(duan)(duan)器(qi)(qi)(qi)，比以往(wang)任何时候都更为重要(yao)，低(di)压熔(rong)(rong)断(duan)(duan)(duan)(duan)器(qi)(qi)(qi)和(he)(he)车(che)(che)规(gui)电气的(de)(de)(de)(de)交叉应用对熔(rong)(rong)断(duan)(duan)(duan)(duan)器(qi)(qi)(qi)提出了更具挑战性(xing)(xing)的(de)(de)(de)(de)要(yao)求(qiu)。传统的(de)(de)(de)(de)电子电力(li)熔(rong)(rong)断(duan)(duan)(duan)(duan)器(qi)(qi)(qi)，其(qi)特(te)性(xing)(xing)由UL248系(xi)列(lie)(lie)北美标准或IEC60127/60269系(xi)列(lie)(lie)覆(fu)盖，对熔(rong)(rong)断(duan)(duan)(duan)(duan)器(qi)(qi)(qi)的(de)(de)(de)(de)可(ke)靠性(xing)(xing)没有要(yao)求(qiu);传统的(de)(de)(de)(de)汽(qi)车(che)(che)熔(rong)(rong)断(duan)(duan)(duan)(duan)器(qi)(qi)(qi)，由ISO8820系(xi)列(lie)(lie)标准定义(yi)(yi)，定义(yi)(yi)了跟汽(qi)车(che)(che)线束的(de)(de)(de)(de)匹配及(ji)可(ke)靠性(xing)(xing)要(yao)求(qiu)，但其(qi)额(e)定电压只覆(fu)盖32VDC及(ji)以下(新的(de)(de)(de)(de)ISO8820-7/8定义(yi)(yi)了燃料电池和(he)(he)混合(he)(he)动力(li)汽(qi)车(che)(che)使用的(de)(de)(de)(de)熔(rong)(rong)断(duan)(duan)(duan)(duan)器(qi)(qi)(qi)，也只到450VDC和(he)(he))。目前,乘用车(che)(che)的(de)(de)(de)(de)工作电压一(yi)般为370V以上(shang)，大巴车(che)(che)达到576V以上(shang)，远(yuan)高于(yu)传统汽(qi)车(che)(che)电气部(bu)件的(de)(de)(de)(de)12V/24V。如此(ci)高的(de)(de)(de)(de)工作平台(tai)电压，要(yao)求(qiu)EV/HEV熔(rong)(rong)断(duan)(duan)(duan)(duan)器(qi)(qi)(qi)要(yao)求(qiu)兼具低(di)压熔(rong)(rong)断(duan)(duan)(duan)(duan)器(qi)(qi)(qi)的(de)(de)(de)(de)高分(fen)断(duan)(duan)(duan)(duan)能力(li)和(he)(he)汽(qi)车(che)(che)熔(rong)(rong)断(duan)(duan)(duan)(duan)器(qi)(qi)(qi)的(de)(de)(de)(de)高可(ke)靠性(xing)(xing)。浙江银河熔(rong)(rong)断(duan)(duan)(duan)(duan)器(qi)(qi)(qi)有限公司生(sheng)产的(de)(de)(de)(de)光伏熔(rong)(rong)断(duan)(duan)(duan)(duan)器(qi)(qi)(qi)获得国内外(wai)客户的(de)(de)(de)(de)一(yi)致好评(ping)，竭诚为您(nin)服务！

当短(duan)(duan)(duan)路(lu)(lu)(lu)电(dian)(dian)(dian)流(liu)(liu)(liu)流(liu)(liu)(liu)过(guo)保(bao)(bao)(bao)(bao)险丝(si)时，保(bao)(bao)(bao)(bao)险丝(si)会在(zai)5毫(hao)秒内(nei)熔(rong)(rong)断(duan)(duan)(duan)(duan)(duan)(duan)(duan)(duan)。与断(duan)(duan)(duan)(duan)(duan)(duan)(duan)(duan)路(lu)(lu)(lu)器(qi)(qi)(qi)(qi)(qi)(qi)相比(bi)(bi)，断(duan)(duan)(duan)(duan)(duan)(duan)(duan)(duan)路(lu)(lu)(lu)器(qi)(qi)(qi)(qi)(qi)(qi)的(de)(de)(de)短(duan)(duan)(duan)路(lu)(lu)(lu)保(bao)(bao)(bao)(bao)护开断(duan)(duan)(duan)(duan)(duan)(duan)(duan)(duan)时间不小于25毫(hao)秒。熔(rong)(rong)断(duan)(duan)(duan)(duan)(duan)(duan)(duan)(duan)器(qi)(qi)(qi)(qi)(qi)(qi)的(de)(de)(de)热稳定性(xing)(xing)高(gao)于断(duan)(duan)(duan)(duan)(duan)(duan)(duan)(duan)路(lu)(lu)(lu)器(qi)(qi)(qi)(qi)(qi)(qi)。熔(rong)(rong)断(duan)(duan)(duan)(duan)(duan)(duan)(duan)(duan)器(qi)(qi)(qi)(qi)(qi)(qi)无(wu)触点(dian)，无(wu)动(dong)(dong)态稳定性(xing)(xing)，断(duan)(duan)(duan)(duan)(duan)(duan)(duan)(duan)路(lu)(lu)(lu)器(qi)(qi)(qi)(qi)(qi)(qi)有动(dong)(dong)态稳定性(xing)(xing)。熔(rong)(rong)断(duan)(duan)(duan)(duan)(duan)(duan)(duan)(duan)器(qi)(qi)(qi)(qi)(qi)(qi)具(ju)有限(xian)(xian)(xian)(xian)流(liu)(liu)(liu)特(te)(te)性(xing)(xing)，能(neng)快速(su)切断(duan)(duan)(duan)(duan)(duan)(duan)(duan)(duan)高(gao)短(duan)(duan)(duan)路(lu)(lu)(lu)电(dian)(dian)(dian)流(liu)(liu)(liu)。相比(bi)(bi)之下，普通(tong)断(duan)(duan)(duan)(duan)(duan)(duan)(duan)(duan)路(lu)(lu)(lu)器(qi)(qi)(qi)(qi)(qi)(qi)能(neng)承(cheng)受(shou)的(de)(de)(de)冲(chong)击(ji)短(duan)(duan)(duan)路(lu)(lu)(lu)电(dian)(dian)(dian)流(liu)(liu)(liu)较小，承(cheng)受(shou)能(neng)力(li)与成本成正比(bi)(bi)。当熔(rong)(rong)断(duan)(duan)(duan)(duan)(duan)(duan)(duan)(duan)器(qi)(qi)(qi)(qi)(qi)(qi)和断(duan)(duan)(duan)(duan)(duan)(duan)(duan)(duan)路(lu)(lu)(lu)器(qi)(qi)(qi)(qi)(qi)(qi)同时布(bu)置在(zai)电(dian)(dian)(dian)路(lu)(lu)(lu)中时，熔(rong)(rong)断(duan)(duan)(duan)(duan)(duan)(duan)(duan)(duan)器(qi)(qi)(qi)(qi)(qi)(qi)的(de)(de)(de)作(zuo)用(yong)是保(bao)(bao)(bao)(bao)护断(duan)(duan)(duan)(duan)(duan)(duan)(duan)(duan)路(lu)(lu)(lu)器(qi)(qi)(qi)(qi)(qi)(qi)，从(cong)而提前实现短(duan)(duan)(duan)路(lu)(lu)(lu)电(dian)(dian)(dian)流(liu)(liu)(liu)的(de)(de)(de)中断(duan)(duan)(duan)(duan)(duan)(duan)(duan)(duan)。我(wo)们(men)的(de)(de)(de)角色被称为后(hou)背保(bao)(bao)(bao)(bao)护。熔(rong)(rong)断(duan)(duan)(duan)(duan)(duan)(duan)(duan)(duan)器(qi)(qi)(qi)(qi)(qi)(qi)的(de)(de)(de)限(xian)(xian)(xian)(xian)流(liu)(liu)(liu)特(te)(te)性(xing)(xing)我(wo)们(men)100A额(e)定电(dian)(dian)(dian)流(liu)(liu)(liu)熔(rong)(rong)断(duan)(duan)(duan)(duan)(duan)(duan)(duan)(duan)器(qi)(qi)(qi)(qi)(qi)(qi)为例。当线(xian)路(lu)(lu)(lu)中的(de)(de)(de)短(duan)(duan)(duan)路(lu)(lu)(lu)电(dian)(dian)(dian)流(liu)(liu)(liu)达到50kA（横(heng)坐(zuo)标值(zhi)，有效值(zhi)）时，对于100A的(de)(de)(de)熔(rong)(rong)断(duan)(duan)(duan)(duan)(duan)(duan)(duan)(duan)器(qi)(qi)(qi)(qi)(qi)(qi)来说，它的(de)(de)(de)截断(duan)(duan)(duan)(duan)(duan)(duan)(duan)(duan)电(dian)(dian)(dian)流(liu)(liu)(liu)是12kA（纵坐(zuo)标值(zhi)，有效值(zhi)），两者之比(bi)(bi)是12/50=24%。这个(ge)比(bi)(bi)值(zhi)叫(jiao)做限(xian)(xian)(xian)(xian)流(liu)(liu)(liu)比(bi)(bi)，它反映出熔(rong)(rong)断(duan)(duan)(duan)(duan)(duan)(duan)(duan)(duan)器(qi)(qi)(qi)(qi)(qi)(qi)的(de)(de)(de)限(xian)(xian)(xian)(xian)流(liu)(liu)(liu)特(te)(te)性(xing)(xing)。原始的(de)(de)(de)短(duan)(duan)(duan)路(lu)(lu)(lu)电(dian)(dian)(dian)流(liu)(liu)(liu)是天蓝色的(de)(de)(de)区(qu)域(yu)，限(xian)(xian)(xian)(xian)流(liu)(liu)(liu)后(hou)的(de)(de)(de)是绿色的(de)(de)(de)区(qu)域(yu)，我(wo)们(men)能(neng)看到限(xian)(xian)(xian)(xian)流(liu)(liu)(liu)的(de)(de)(de)特(te)(te)点(dian)和意(yi)义。注意(yi)：我(wo)们(men)看到熔(rong)(rong)断(duan)(duan)(duan)(duan)(duan)(duan)(duan)(duan)器(qi)(qi)(qi)(qi)(qi)(qi)能(neng)在(zai)1/4周波内(nei)切断(duan)(duan)(duan)(duan)(duan)(duan)(duan)(duan)短(duan)(duan)(duan)路(lu)(lu)(lu)电(dian)(dian)(dian)流(liu)(liu)(liu)。可见(jian)，熔(rong)(rong)断(duan)(duan)(duan)(duan)(duan)(duan)(duan)(duan)器(qi)(qi)(qi)(qi)(qi)(qi)的(de)(de)(de)动(dong)(dong)作(zuo)特(te)(te)性(xing)(xing)非常迅速(su)，我(wo)们(men)把它叫(jiao)做短(duan)(duan)(duan)路(lu)(lu)(lu)瞬态动(dong)(dong)作(zuo)特(te)(te)性(xing)(xing)。我(wo)们(men)再看熔(rong)(rong)断(duan)(duan)(duan)(duan)(duan)(duan)(duan)(duan)器(qi)(qi)(qi)(qi)(qi)(qi)的(de)(de)(de)安(an)(an)秒特(te)(te)性(xing)(xing)：所谓安(an)(an)秒特(te)(te)性(xing)(xing)，指的(de)(de)(de)是曲线(xian)横(heng)坐(zuo)标是电(dian)(dian)(dian)流(liu)(liu)(liu)，纵坐(zuo)标是时间，安(an)(an)秒特(te)(te)性(xing)(xing)是开关电(dian)(dian)(dian)器(qi)(qi)(qi)(qi)(qi)(qi)的(de)(de)(de)身份证。熔(rong)(rong)断(duan)(duan)(duan)(duan)(duan)(duan)(duan)(duan)器(qi)(qi)(qi)(qi)(qi)(qi)的(de)(de)(de)动(dong)(dong)作(zuo)时间都在(zai)10毫(hao)秒以内(nei)。熔(rong)(rong)断(duan)(duan)(duan)(duan)(duan)(duan)(duan)(duan)器(qi)(qi)(qi)(qi)(qi)(qi)不仅适合于执行短(duan)(duan)(duan)路(lu)(lu)(lu)保(bao)(bao)(bao)(bao)护，更适合于过(guo)载保(bao)(bao)(bao)(bao)护。浙江银河(he)熔(rong)(rong)断(duan)(duan)(duan)(duan)(duan)(duan)(duan)(duan)器(qi)(qi)(qi)(qi)(qi)(qi)有限(xian)(xian)(xian)(xian)公司40来年专注于熔(rong)(rong)断(duan)(duan)(duan)(duan)(duan)(duan)(duan)(duan)器(qi)(qi)(qi)(qi)(qi)(qi)的(de)(de)(de)生产和发展，质量保(bao)(bao)(bao)(bao)证，欢迎您来电(dian)(dian)(dian)咨询！温州快速(su)熔(rong)(rong)断(duan)(duan)(duan)(duan)(duan)(duan)(duan)(duan)器(qi)(qi)(qi)(qi)(qi)(qi)批发价

浙江银河熔(rong)(rong)断(duan)器(qi)有限公司致力于(yu)生产和研发新能源汽车熔(rong)(rong)断(duan)器(qi)，品种齐全，期待您的来电咨询。温州快(kuai)速熔(rong)(rong)断(duan)器(qi)批(pi)发价(jia)

熔(rong)(rong)(rong)(rong)体(ti)(ti)(ti)(ti)(ti)额(e)定(ding)(ding)(ding)(ding)电(dian)(dian)流(liu)不(bu)(bu)等(deng)于(yu)熔(rong)(rong)(rong)(rong)断(duan)(duan)(duan)(duan)(duan)器额(e)定(ding)(ding)(ding)(ding)电(dian)(dian)流(liu)，熔(rong)(rong)(rong)(rong)体(ti)(ti)(ti)(ti)(ti)额(e)定(ding)(ding)(ding)(ding)电(dian)(dian)流(liu)按被(bei)保护设备(bei)的(de)(de)(de)负荷电(dian)(dian)流(liu)选择，熔(rong)(rong)(rong)(rong)断(duan)(duan)(duan)(duan)(duan)器额(e)定(ding)(ding)(ding)(ding)电(dian)(dian)流(liu)应大(da)于(yu)熔(rong)(rong)(rong)(rong)体(ti)(ti)(ti)(ti)(ti)额(e)定(ding)(ding)(ding)(ding)电(dian)(dian)流(liu)，与主电(dian)(dian)器配合确定(ding)(ding)(ding)(ding)。熔(rong)(rong)(rong)(rong)断(duan)(duan)(duan)(duan)(duan)器主要由(you)熔(rong)(rong)(rong)(rong)体(ti)(ti)(ti)(ti)(ti)、外(wai)壳和支座3部(bu)分(fen)组成(cheng)，其(qi)(qi)中熔(rong)(rong)(rong)(rong)体(ti)(ti)(ti)(ti)(ti)是控制(zhi)熔(rong)(rong)(rong)(rong)断(duan)(duan)(duan)(duan)(duan)特(te)性(xing)的(de)(de)(de)关键元件(jian)。熔(rong)(rong)(rong)(rong)体(ti)(ti)(ti)(ti)(ti)的(de)(de)(de)材(cai)(cai)料(liao)(liao)、尺寸和形状决定(ding)(ding)(ding)(ding)了熔(rong)(rong)(rong)(rong)断(duan)(duan)(duan)(duan)(duan)特(te)性(xing)。熔(rong)(rong)(rong)(rong)体(ti)(ti)(ti)(ti)(ti)材(cai)(cai)料(liao)(liao)分(fen)为(wei)低(di)(di)熔(rong)(rong)(rong)(rong)点和高(gao)熔(rong)(rong)(rong)(rong)点两(liang)类(lei)。低(di)(di)熔(rong)(rong)(rong)(rong)点材(cai)(cai)料(liao)(liao)如铅和铅合金，其(qi)(qi)熔(rong)(rong)(rong)(rong)点低(di)(di)容(rong)易熔(rong)(rong)(rong)(rong)断(duan)(duan)(duan)(duan)(duan)，由(you)于(yu)其(qi)(qi)电(dian)(dian)阻(zu)率较大(da)，故制(zhi)成(cheng)熔(rong)(rong)(rong)(rong)体(ti)(ti)(ti)(ti)(ti)的(de)(de)(de)截面(mian)尺寸较大(da)，熔(rong)(rong)(rong)(rong)断(duan)(duan)(duan)(duan)(duan)时产生(sheng)的(de)(de)(de)金属蒸气(qi)较多，只(zhi)适(shi)用于(yu)低(di)(di)分(fen)断(duan)(duan)(duan)(duan)(duan)能力的(de)(de)(de)熔(rong)(rong)(rong)(rong)断(duan)(duan)(duan)(duan)(duan)器。高(gao)熔(rong)(rong)(rong)(rong)点材(cai)(cai)料(liao)(liao)如铜、银，其(qi)(qi)熔(rong)(rong)(rong)(rong)点高(gao)，不(bu)(bu)容(rong)易熔(rong)(rong)(rong)(rong)断(duan)(duan)(duan)(duan)(duan)，但由(you)于(yu)其(qi)(qi)电(dian)(dian)阻(zu)率较低(di)(di)，可制(zhi)成(cheng)比低(di)(di)熔(rong)(rong)(rong)(rong)点熔(rong)(rong)(rong)(rong)体(ti)(ti)(ti)(ti)(ti)较小(xiao)的(de)(de)(de)截面(mian)尺寸，熔(rong)(rong)(rong)(rong)断(duan)(duan)(duan)(duan)(duan)时产生(sheng)的(de)(de)(de)金属蒸气(qi)少，适(shi)用于(yu)高(gao)分(fen)断(duan)(duan)(duan)(duan)(duan)能力的(de)(de)(de)熔(rong)(rong)(rong)(rong)断(duan)(duan)(duan)(duan)(duan)器。熔(rong)(rong)(rong)(rong)体(ti)(ti)(ti)(ti)(ti)的(de)(de)(de)形状分(fen)为(wei)丝状和带(dai)状两(liang)种(zhong)。改变(bian)变(bian)截面(mian)的(de)(de)(de)形状可明(ming)显改变(bian)熔(rong)(rong)(rong)(rong)断(duan)(duan)(duan)(duan)(duan)器的(de)(de)(de)熔(rong)(rong)(rong)(rong)断(duan)(duan)(duan)(duan)(duan)特(te)性(xing)。熔(rong)(rong)(rong)(rong)断(duan)(duan)(duan)(duan)(duan)器有各(ge)种(zhong)不(bu)(bu)同的(de)(de)(de)熔(rong)(rong)(rong)(rong)断(duan)(duan)(duan)(duan)(duan)特(te)性(xing)曲线，可以适(shi)用于(yu)不(bu)(bu)同类(lei)型(xing)保护对象(xiang)的(de)(de)(de)需要。温州(zhou)快速熔(rong)(rong)(rong)(rong)断(duan)(duan)(duan)(duan)(duan)器批发价

本文(wen)来自海(hai)润(run)达(da)物联科技(ji)有限责(ze)任公司：//qfd1mz.cn/Article/78c13199790.html