作(zuo)为(wei)电(dian)(dian)(dian)(dian)(dian)(dian)气设(she)备中(zhong)(zhong)的(de)(de)(de)(de)关键元件之一(yi)，保(bao)(bao)险(xian)(xian)(xian)(xian)丝(si)(si)在(zai)电(dian)(dian)(dian)(dian)(dian)(dian)路(lu)保(bao)(bao)护(hu)中(zhong)(zhong)起着(zhe)至关重要的(de)(de)(de)(de)作(zuo)用(yong)。它可(ke)(ke)以在(zai)电(dian)(dian)(dian)(dian)(dian)(dian)路(lu)出现过(guo)(guo)载或短路(lu)时及时熔断，从(cong)而(er)(er)保(bao)(bao)护(hu)电(dian)(dian)(dian)(dian)(dian)(dian)路(lu)和(he)设(she)备免(mian)受损坏。然而(er)(er)，对于保(bao)(bao)险(xian)(xian)(xian)(xian)丝(si)(si)的(de)(de)(de)(de)分类(lei)和(he)使用(yong)方(fang)法，很多人并不(bu)十分了解。本文将从(cong)保(bao)(bao)险(xian)(xian)(xian)(xian)丝(si)(si)的(de)(de)(de)(de)分类(lei)、特点、选(xuan)用(yong)和(he)安装等(deng)方(fang)面进行详细(xi)介绍。一(yi)、保(bao)(bao)险(xian)(xian)(xian)(xian)丝(si)(si)的(de)(de)(de)(de)分类(lei)根据不(bu)同的(de)(de)(de)(de)标(biao)准，保(bao)(bao)险(xian)(xian)(xian)(xian)丝(si)(si)可(ke)(ke)以分为(wei)不(bu)同的(de)(de)(de)(de)类(lei)型(xing)。1.根据工(gong)(gong)作(zuo)原理，保(bao)(bao)险(xian)(xian)(xian)(xian)丝(si)(si)可(ke)(ke)以分为(wei)以下(xia)几类(lei)：(1)熔断型(xing)保(bao)(bao)险(xian)(xian)(xian)(xian)丝(si)(si)：当(dang)电(dian)(dian)(dian)(dian)(dian)(dian)路(lu)出现过(guo)(guo)载或短路(lu)时，电(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)超过(guo)(guo)额(e)定(ding)值(zhi)，导(dao)致保(bao)(bao)险(xian)(xian)(xian)(xian)丝(si)(si)熔断，从(cong)而(er)(er)起到保(bao)(bao)护(hu)电(dian)(dian)(dian)(dian)(dian)(dian)路(lu)的(de)(de)(de)(de)作(zuo)用(yong)。这(zhei)(zhei)种(zhong)(zhong)保(bao)(bao)险(xian)(xian)(xian)(xian)丝(si)(si)通常(chang)用(yong)于家用(yong)电(dian)(dian)(dian)(dian)(dian)(dian)器(qi)、办公设(she)备和(he)汽车等(deng)设(she)备中(zhong)(zhong)。(2)电(dian)(dian)(dian)(dian)(dian)(dian)磁型(xing)保(bao)(bao)险(xian)(xian)(xian)(xian)丝(si)(si)：当(dang)电(dian)(dian)(dian)(dian)(dian)(dian)路(lu)中(zhong)(zhong)电(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)过(guo)(guo)大时，电(dian)(dian)(dian)(dian)(dian)(dian)磁感(gan)应作(zuo)用(yong)增强，导(dao)致保(bao)(bao)险(xian)(xian)(xian)(xian)丝(si)(si)自动(dong)断开(kai)，从(cong)而(er)(er)起到保(bao)(bao)护(hu)电(dian)(dian)(dian)(dian)(dian)(dian)路(lu)的(de)(de)(de)(de)作(zuo)用(yong)。这(zhei)(zhei)种(zhong)(zhong)保(bao)(bao)险(xian)(xian)(xian)(xian)丝(si)(si)通常(chang)用(yong)于电(dian)(dian)(dian)(dian)(dian)(dian)子设(she)备、医疗器(qi)械和(he)科研设(she)备等(deng)高精密(mi)度仪器(qi)中(zhong)(zhong)。(3)温(wen)度保(bao)(bao)险(xian)(xian)(xian)(xian)丝(si)(si)：当(dang)电(dian)(dian)(dian)(dian)(dian)(dian)路(lu)或周围(wei)环境温(wen)度过(guo)(guo)高时，保(bao)(bao)险(xian)(xian)(xian)(xian)丝(si)(si)内的(de)(de)(de)(de)金属丝(si)(si)受热膨胀，导(dao)致电(dian)(dian)(dian)(dian)(dian)(dian)路(lu)断开(kai)，从(cong)而(er)(er)起到保(bao)(bao)护(hu)电(dian)(dian)(dian)(dian)(dian)(dian)路(lu)的(de)(de)(de)(de)作(zuo)用(yong)。这(zhei)(zhei)种(zhong)(zhong)保(bao)(bao)险(xian)(xian)(xian)(xian)丝(si)(si)通常(chang)用(yong)于家用(yong)电(dian)(dian)(dian)(dian)(dian)(dian)器(qi)、灯具(ju)和(he)电(dian)(dian)(dian)(dian)(dian)(dian)动(dong)工(gong)(gong)具(ju)等(deng)设(she)备中(zhong)(zhong)。易于维护(hu)的(de)(de)(de)(de)保(bao)(bao)险(xian)(xian)(xian)(xian)丝(si)(si)，让您的(de)(de)(de)(de)家庭更轻松，享受更省心的(de)(de)(de)(de)生活。1812L020/60DR

保险(xian)(xian)(xian)(xian)(xian)丝(si)(si)(si)的(de)熔(rong)断(duan)(duan)(duan)时间熔(rong)断(duan)(duan)(duan)特(te)(te)性(xing)(xing)，也(ye)称为(wei)I-T特(te)(te)性(xing)(xing)。这(zhei)个特(te)(te)性(xing)(xing)是主(zhu)要的(de)性(xing)(xing)能指标(biao)，根据熔(rong)断(duan)(duan)(duan)时间可(ke)以将保险(xian)(xian)(xian)(xian)(xian)丝(si)(si)(si)分为(wei)快(kuai)(kuai)熔(rong)、慢熔(rong)、中等(deng)速度(du)熔(rong)断(duan)(duan)(duan)。对阻性(xing)(xing)电路或保护(hu)敏(min)感器件的(de)电路中，应选用(yong)快(kuai)(kuai)熔(rong)断(duan)(duan)(duan)保险(xian)(xian)(xian)(xian)(xian)丝(si)(si)(si)；对容性(xing)(xing)和感性(xing)(xing)电路或有(you)较大脉冲的(de)电路，应选用(yong)慢熔(rong)断(duan)(duan)(duan)保险(xian)(xian)(xian)(xian)(xian)丝(si)(si)(si)。如图是某(mou)系列快(kuai)(kuai)熔(rong)保险(xian)(xian)(xian)(xian)(xian)丝(si)(si)(si)的(de)I-T特(te)(te)性(xing)(xing)。它(ta)表明了不同电流(liu)(liu)负载时保险(xian)(xian)(xian)(xian)(xian)丝(si)(si)(si)熔(rong)断(duan)(duan)(duan)的(de)时间范围。使(shi)用(yong)保险(xian)(xian)(xian)(xian)(xian)丝(si)(si)(si)注(zhu)意(yi)事项4,、温度(du)对保险(xian)(xian)(xian)(xian)(xian)丝(si)(si)(si)的(de)影(ying)响同半(ban)导体(ti)一样，保险(xian)(xian)(xian)(xian)(xian)丝(si)(si)(si)也(ye)是温度(du)敏(min)感器件。随着温度(du)升高(gao)，其(qi)额(e)定工作(zuo)(zuo)电流(liu)(liu)需要进行相应的(de)降额(e)。这(zhei)很容易理解，本(ben)身(shen)保险(xian)(xian)(xian)(xian)(xian)丝(si)(si)(si)就是依靠热(re)量(liang)来将其(qi)熔(rong)断(duan)(duan)(duan)的(de)，其(qi)温度(du)等(deng)于环境温度(du)加上(shang)工作(zuo)(zuo)时的(de)温升，当环境温度(du)较高(gao)时，有(you)必(bi)要使(shi)其(qi)自(zi)身(shen)温升降低，因此需对额(e)定电流(liu)(liu)降额(e)的(de)。PTC12066V200我们的(de)保险(xian)(xian)(xian)(xian)(xian)丝(si)(si)(si)严(yan)格按照国际标(biao)准生产，品质可(ke)靠。

影响保(bao)(bao)(bao)(bao)险(xian)(xian)(xian)(xian)(xian)丝(si)(si)(si)寿(shou)命三大(da)因素如下（1）接(jie)(jie)触(chu)件。我们知(zhi)道保(bao)(bao)(bao)(bao)险(xian)(xian)(xian)(xian)(xian)丝(si)(si)(si)是一个相对较小的(de)(de)(de)(de)(de)设备。当(dang)应(ying)(ying)用(yong)于(yu)电(dian)路时(shi)，保(bao)(bao)(bao)(bao)险(xian)(xian)(xian)(xian)(xian)丝(si)(si)(si)接(jie)(jie)触(chu)管夹、连接(jie)(jie)电(dian)线的(de)(de)(de)(de)(de)长度(du)(du)(du)(du)(du)和(he)(he)截面积(ji)。保(bao)(bao)(bao)(bao)险(xian)(xian)(xian)(xian)(xian)丝(si)(si)(si)坐夹子之间(jian)的(de)(de)(de)(de)(de)接(jie)(jie)触(chu)电(dian)阻过大(da)会(hui)(hui)(hui)损害保(bao)(bao)(bao)(bao)险(xian)(xian)(xian)(xian)(xian)丝(si)(si)(si)的(de)(de)(de)(de)(de)寿(shou)命，在(zai)UL标(biao)准中，实验时(shi)保(bao)(bao)(bao)(bao)险(xian)(xian)(xian)(xian)(xian)丝(si)(si)(si)和(he)(he)夹子的(de)(de)(de)(de)(de)接(jie)(jie)触(chu)电(dian)阻不(bu)足(zu)3毫欧。（2）工(gong)作环(huan)境(jing)(jing)温度(du)(du)(du)(du)(du)。保(bao)(bao)(bao)(bao)险(xian)(xian)(xian)(xian)(xian)丝(si)(si)(si)的(de)(de)(de)(de)(de)参(can)数值都(dou)在(zai)标(biao)准温度(du)(du)(du)(du)(du)环(huan)境(jing)(jing)下，工(gong)作环(huan)境(jing)(jing)过高会(hui)(hui)(hui)影响保(bao)(bao)(bao)(bao)险(xian)(xian)(xian)(xian)(xian)丝(si)(si)(si)的(de)(de)(de)(de)(de)寿(shou)命，过低会(hui)(hui)(hui)影响保(bao)(bao)(bao)(bao)险(xian)(xian)(xian)(xian)(xian)丝(si)(si)(si)参(can)数值的(de)(de)(de)(de)(de)变(bian)化(hua)(hua)，慢(man)熔(rong)(rong)保(bao)(bao)(bao)(bao)险(xian)(xian)(xian)(xian)(xian)丝(si)(si)(si)，如锡(xi)球(qiu)，当(dang)温度(du)(du)(du)(du)(du)约为160度(du)(du)(du)(du)(du)时(shi)，锡(xi)开始向(xiang)金属(shu)丝(si)(si)(si)扩散(san)；当(dang)温度(du)(du)(du)(du)(du)约为200度(du)(du)(du)(du)(du)时(shi)，熔(rong)(rong)体开始剧(ju)烈氧(yang)化(hua)(hua)。随(sui)(sui)着熔(rong)(rong)丝(si)(si)(si)由(you)外向(xiang)里的(de)(de)(de)(de)(de)氧(yang)化(hua)(hua)、多次的(de)(de)(de)(de)(de)多次的(de)(de)(de)(de)(de)扩散(san)、热应(ying)(ying)力疲劳等，保(bao)(bao)(bao)(bao)险(xian)(xian)(xian)(xian)(xian)丝(si)(si)(si)的(de)(de)(de)(de)(de)寿(shou)命会(hui)(hui)(hui)逐渐的(de)(de)(de)(de)(de)缩短(duan)。因此，建议延迟保(bao)(bao)(bao)(bao)险(xian)(xian)(xian)(xian)(xian)丝(si)(si)(si)不(bu)应(ying)(ying)长时(shi)间(jian)在(zai)150度(du)(du)(du)(du)(du)以上的(de)(de)(de)(de)(de)环(huan)境(jing)(jing)中工(gong)作，快速熔(rong)(rong)断保(bao)(bao)(bao)(bao)险(xian)(xian)(xian)(xian)(xian)丝(si)(si)(si)不(bu)应(ying)(ying)长时(shi)间(jian)在(zai)175~225℃以上工(gong)作。（3）脉(mai)冲(chong)电(dian)流(liu)。在(zai)实际应(ying)(ying)用(yong)中，保(bao)(bao)(bao)(bao)险(xian)(xian)(xian)(xian)(xian)丝(si)(si)(si)经常会(hui)(hui)(hui)遇到脉(mai)冲(chong)电(dian)流(liu)。没有(you)脉(mai)冲(chong)电(dian)流(liu)，保(bao)(bao)(bao)(bao)险(xian)(xian)(xian)(xian)(xian)丝(si)(si)(si)的(de)(de)(de)(de)(de)险(xian)(xian)(xian)(xian)(xian)丝(si)(si)(si)的(de)(de)(de)(de)(de)使用(yong)寿(shou)命到，因为脉(mai)冲(chong)冲(chong)击(ji)会(hui)(hui)(hui)产生(sheng)热循环(huan)，从而导(dao)致(zhi)熔(rong)(rong)断器(qi)的(de)(de)(de)(de)(de)扩散(san)、氧(yang)化(hua)(hua)和(he)(he)热应(ying)(ying)力，甚(shen)至加速。保(bao)(bao)(bao)(bao)险(xian)(xian)(xian)(xian)(xian)丝(si)(si)(si)随(sui)(sui)着脉(mai)冲(chong)能量和(he)(he)次数的(de)(de)(de)(de)(de)增加而老化(hua)(hua)，保(bao)(bao)(bao)(bao)险(xian)(xian)(xian)(xian)(xian)丝(si)(si)(si)的(de)(de)(de)(de)(de)抗(kang)冲(chong)击(ji)寿(shou)命取(qu)决(jue)于(yu)脉(mai)冲(chong)的(de)(de)(de)(de)(de)I2t占保(bao)(bao)(bao)(bao)险(xian)(xian)(xian)(xian)(xian)丝(si)(si)(si)自身I2t的(de)(de)(de)(de)(de)比例。

保(bao)(bao)险(xian)丝(si)的(de)(de)(de)(de)阻(zu)(zu)值保(bao)(bao)险(xian)丝(si)有电(dian)(dian)(dian)(dian)阻(zu)(zu)值，其实就(jiu)连导(dao)(dao)线也有电(dian)(dian)(dian)(dian)阻(zu)(zu)，只(zhi)是(shi)导(dao)(dao)线的(de)(de)(de)(de)电(dian)(dian)(dian)(dian)阻(zu)(zu)很小（导(dao)(dao)体(ti)的(de)(de)(de)(de)性质），在一(yi)般的(de)(de)(de)(de)电(dian)(dian)(dian)(dian)路计算中，我(wo)们(men)通常(chang)不计，但保(bao)(bao)险(xian)丝(si)的(de)(de)(de)(de)电(dian)(dian)(dian)(dian)阻(zu)(zu)明显要比等长导(dao)(dao)线的(de)(de)(de)(de)电(dian)(dian)(dian)(dian)阻(zu)(zu)要大，这样它才能(neng)起到(dao)保(bao)(bao)护(hu)电(dian)(dian)(dian)(dian)路的(de)(de)(de)(de)作用(yong)(yong)。保(bao)(bao)险(xian)丝(si)上标(biao)有“5A250V”，说明保(bao)(bao)险(xian)丝(si)允许(xu)通过的(de)(de)(de)(de)比较大电(dian)(dian)(dian)(dian)流为5A，称为额(e)定电(dian)(dian)(dian)(dian)流；允许(xu)通过的(de)(de)(de)(de)比较大电(dian)(dian)(dian)(dian)压(ya)250V，称为额(e)定电(dian)(dian)(dian)(dian)压(ya)。如(ru)果电(dian)(dian)(dian)(dian)流或电(dian)(dian)(dian)(dian)压(ya)超过额(e)定值，保(bao)(bao)险(xian)丝(si)就(jiu)会熔断，使(shi)电(dian)(dian)(dian)(dian)路断路，从而(er)保(bao)(bao)护(hu)了用(yong)(yong)电(dian)(dian)(dian)(dian)器（如(ru)果没保(bao)(bao)险(xian)丝(si)，用(yong)(yong)电(dian)(dian)(dian)(dian)器可能(neng)被烧(shao)坏）。易于使(shi)用(yong)(yong)，让您的(de)(de)(de)(de)家庭更轻松(song)，享受更舒适的(de)(de)(de)(de)生活。

常(chang)见的(de)保(bao)(bao)(bao)险(xian)(xian)(xian)丝(si)(si)一般(ban)根(gen)据保(bao)(bao)(bao)护(hu)形式、使用范围、体积大小、额定电(dian)压、中断(duan)能力、外观(guan)性状、熔断(duan)速(su)度(du)、国际标准八个维度(du)进行分(fen)(fen)类划(hua)分(fen)(fen)。保(bao)(bao)(bao)险(xian)(xian)(xian)丝(si)(si)一般(ban)分(fen)(fen)为(wei)一次性保(bao)(bao)(bao)险(xian)(xian)(xian)丝(si)(si)跟(gen)自(zi)恢(hui)(hui)复(fu)(fu)保(bao)(bao)(bao)险(xian)(xian)(xian)丝(si)(si)两种。保(bao)(bao)(bao)险(xian)(xian)(xian)丝(si)(si)(fuse)也被称为(wei)电(dian)流(liu)保(bao)(bao)(bao)险(xian)(xian)(xian)丝(si)(si)，IEC127标准将它(ta)定义为(wei)"熔断(duan)体（fuse-link)"。其主(zhu)要是起过(guo)载保(bao)(bao)(bao)护(hu)作用。电(dian)路中正确安(an)置保(bao)(bao)(bao)险(xian)(xian)(xian)丝(si)(si)，保(bao)(bao)(bao)险(xian)(xian)(xian)丝(si)(si)就会在(zai)(zai)电(dian)流(liu)异常(chang)升(sheng)高到(dao)一定的(de)高度(du)和(he)热度(du)的(de)时候，自(zi)身(shen)熔断(duan)切断(duan)电(dian)流(liu)，保(bao)(bao)(bao)护(hu)了(le)电(dian)路安(an)全运行。自(zi)恢(hui)(hui)复(fu)(fu)保(bao)(bao)(bao)险(xian)(xian)(xian)丝(si)(si)，是一种过(guo)流(liu)电(dian)子(zi)保(bao)(bao)(bao)护(hu)元(yuan)件(jian)，采(cai)用高分(fen)(fen)子(zi)有机聚合物在(zai)(zai)高压、高温，硫化反(fan)应的(de)条件(jian)下，掺加导电(dian)粒子(zi)材料(liao)后(hou)，经(jing)过(guo)特殊的(de)工艺加工而成。传统保(bao)(bao)(bao)险(xian)(xian)(xian)丝(si)(si)过(guo)流(liu)保(bao)(bao)(bao)护(hu)，能保(bao)(bao)(bao)护(hu)一次，烧断(duan)了(le)需更换，而自(zi)恢(hui)(hui)复(fu)(fu)保(bao)(bao)(bao)险(xian)(xian)(xian)丝(si)(si)具(ju)有过(guo)流(liu)过(guo)热保(bao)(bao)(bao)护(hu)，自(zi)动恢(hui)(hui)复(fu)(fu)双重功能。我们的(de)保(bao)(bao)(bao)险(xian)(xian)(xian)丝(si)(si)始(shi)终(zhong)把(ba)客户满意度(du)放在(zai)(zai)，竭诚为(wei)您服务(wu)。04581.25DR

专业品质的(de)(de)保险丝，让您无需担心(xin)品质问(wen)题,享受(shou)更安全的(de)(de)生活。1812L020/60DR

RP是电(dian)(dian)流(liu)设(she)置电(dian)(dian)位器(qi)(qi)(qi)，采用0.5w、25kΩ带刻(ke)度(du)(du)旋钮(niu)的多圈精(jing)密电(dian)(dian)位器(qi)(qi)(qi)，这样校准和使用都非常方便。校准装置也很(hen)简单(dan)：将(jiang)一自耦变压(ya)器(qi)(qi)(qi)的输(shu)(shu)出端接(jie)一根1200w左右(you)的电(dian)(dian)热丝．变压(ya)器(qi)(qi)(qi)的输(shu)(shu)入端与一只10～20A交流(liu)电(dian)(dian)流(liu)表和本电(dian)(dian)子(zi)熔(rong)丝电(dian)(dian)路串(chuan)联后(hou)，接(jie)220V交流(liu)市(shi)电(dian)(dian)。高、低挡(dang)电(dian)(dian)流(liu)范(fan)围分别进行(xing)校准。以低挡(dang)校准为(wei)例(li)．校准方法(fa)如下：(1)将(jiang)RP调至(zhi)中(zhong)间(jian)刻(ke)度(du)(du)(5.0)，给(ji)自耦变压(ya)器(qi)(qi)(qi)通电(dian)(dian)。记(ji)下RP此时(shi)的精(jing)确刻(ke)度(du)(du)(如6.2等)，此刻(ke)度(du)(du)对应的电(dian)(dian)流(liu)值即(ji)为(wei)1A。(2)将(jiang)RP调至(zhi)中(zhong)间(jian)刻(ke)度(du)(du)，自耦变压(ya)器(qi)(qi)(qi)回(hui)零通电(dian)(dian)后(hou)按一下复位开关(guan)S1，再调自耦变压(ya)器(qi)(qi)(qi)使电(dian)(dian)流(liu)表读数为(wei)2A(或1.5A等)，转动(dong)RP至(zhi)电(dian)(dian)子(zi)熔(rong)丝断开，并(bing)记(ji)下RP刻(ke)度(du)(du)值。(3)依此法(fa)重复上述过程．直至(zhi)高、低挡(dang)电(dian)(dian)流(liu)范(fan)围内的各个保险电(dian)(dian)流(liu)值均校准为(wei)止。1812L020/60DR

本文来(lai)自(zi)海润达(da)物联科技(ji)有限责任公司：//qfd1mz.cn/Article/86e10399810.html