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格亚电气为你介绍继电器的分类、原理和特点

2021.06.24 浏览量: 字号:

继(ji)(ji)电(dian)(dian)(dian)器(qi)是(shi)一(yi)种(zhong)电(dian)(dian)(dian)气控(kong)制(zhi)装置。它是(shi)一(yi)种(zhong)电(dian)(dian)(dian)器(qi),当输入量(liang)的(de)变化满足规定的(de)要求时,使控(kong)制(zhi)量(liang)在(zai)电(dian)(dian)(dian)输出(chu)电(dian)(dian)(dian)路中(zhong)(zhong)以预定的(de)步长变化。控(kong)制(zhi)系统与被控(kong)系统之间存在(zai)着(zhe)(zhe)交互关系。它通(tong)常用(yong)于自动控(kong)制(zhi)电(dian)(dian)(dian)路中(zhong)(zhong),实际上是(shi)一(yi)种(zhong)用(yong)小电(dian)(dian)(dian)流(liu)控(kong)制(zhi)大(da)电(dian)(dian)(dian)流(liu)运(yun)行的(de)“自动开关”。因(yin)此,它在(zai)电(dian)(dian)(dian)路中(zhong)(zhong)起(qi)着(zhe)(zhe)自动调节、安全保护(hu)和转换电(dian)(dian)(dian)路的(de)作用(yong)。富士通(tong)继(ji)(ji)电(dian)(dian)(dian)器(qi)支持从光(guang)伏(fu)到(dao)智能(neng)电(dian)(dian)(dian)网的(de)各种(zhong)绿色应用(yong)。GRI8系列(lie)为dc450v 20a,适用(yong)于光(guang)伏(fu)能(neng)源(yuan)的(de)直流(liu)充电(dian)(dian)(dian);Ftr-k1系列(lie)为AC240V 32a,适用(yong)于交流(liu)电(dian)(dian)(dian)源(yuan)转换器(qi);Ftr-f4g系列(lie)为AC250V 5a,适用(yong)于微型逆变器(qi)。

◈ 继电器类型

继(ji)(ji)(ji)(ji)(ji)电(dian)(dian)(dian)器(qi)按(an)用(yong)途可(ke)分为控制继(ji)(ji)(ji)(ji)(ji)电(dian)(dian)(dian)器(qi)和(he)保护(hu)继(ji)(ji)(ji)(ji)(ji)电(dian)(dian)(dian)器(qi);根据输入信(xin)号(hao)的性质(zhi),继(ji)(ji)(ji)(ji)(ji)电(dian)(dian)(dian)器(qi)可(ke)分为电(dian)(dian)(dian)压继(ji)(ji)(ji)(ji)(ji)电(dian)(dian)(dian)器(qi)、温度继(ji)(ji)(ji)(ji)(ji)电(dian)(dian)(dian)器(qi)、电(dian)(dian)(dian)流继(ji)(ji)(ji)(ji)(ji)电(dian)(dian)(dian)器(qi)、时间继(ji)(ji)(ji)(ji)(ji)电(dian)(dian)(dian)器(qi)、速度继(ji)(ji)(ji)(ji)(ji)电(dian)(dian)(dian)器(qi)、压力继(ji)(ji)(ji)(ji)(ji)电(dian)(dian)(dian)器(qi)和(he)温度继(ji)(ji)(ji)(ji)(ji)电(dian)(dian)(dian)器(qi);

继电(dian)(dian)器(qi)按(an)工作原理可分为电(dian)(dian)磁继电(dian)(dian)器(qi)、感应继电(dian)(dian)器(qi)、热继电(dian)(dian)器(qi)和电(dian)(dian)子继电(dian)(dian)器(qi);

继(ji)(ji)(ji)电(dian)器(qi)按动作(zuo)时间可分为瞬时继(ji)(ji)(ji)电(dian)器(qi)和(he)延时继(ji)(ji)(ji)电(dian)器(qi)。

◈ 工作原理及特点

◈ 电磁继电器的工作原理及特点

电(dian)(dian)磁(ci)继电(dian)(dian)器一(yi)般由铁芯、线圈(quan)、电(dian)(dian)枢(shu)和触(chu)(chu)头组成。工作时(shi),当线圈(quan)两端(duan)施加(jia)一(yi)定电(dian)(dian)压时(shi),会有电(dian)(dian)流通过线圈(quan),产(chan)生电(dian)(dian)磁(ci)效(xiao)应。在电(dian)(dian)磁(ci)力的(de)吸引下(xia),电(dian)(dian)枢(shu)克服反弹簧的(de)拉(la)力吸引到铁芯上,从(cong)而(er)带(dai)动(dong)电(dian)(dian)枢(shu)的(de)动(dong)触(chu)(chu)头和静(jing)触(chu)(chu)头(常(chang)开(kai)(kai)触(chu)(chu)头)吸合(he)。线圈(quan)断电(dian)(dian)时(shi),电(dian)(dian)磁(ci)力消失(shi),电(dian)(dian)枢(shu)在弹簧的(de)反作用(yong)力作用(yong)下(xia)回到原来(lai)的(de)位(wei)置,使动(dong)触(chu)(chu)头和原来(lai)的(de)静(jing)触(chu)(chu)头(常(chang)闭(bi)触(chu)(chu)头)闭(bi)合(he)。这样(yang),拉(la)入和释放(fang)动(dong)作就(jiu)可(ke)(ke)以(yi)达到开(kai)(kai)关的(de)目的(de)。用(yong)于(yu)(yu)继电(dian)(dian)保护;常(chang)开(kai)(kai);常(chang)闭(bi);它可(ke)(ke)以(yi)用(yong)这种方法(fa)来(lai)区分;如果继电(dian)(dian)器线圈(quan)不带(dai)电(dian)(dian)且处于(yu)(yu)断开(kai)(kai)状(zhuang)态(tai),则称(cheng)为静(jing)触(chu)(chu)头;常(chang)开(kai)(kai)触(chu)(chu)点;,处于(yu)(yu)on状(zhuang)态(tai)的(de)静(jing)态(tai)触(chu)(chu)点称(cheng)为;常(chang)闭(bi)触(chu)(chu)点;。

◈ 热干簧继电器的工作原理及特点

热(re)干簧继电器是一种(zhong)利用热(re)磁材(cai)料进行温度(du)检测和控制的新型热(re)开关。它(ta)由感(gan)温磁环(huan)、恒磁环(huan)、干簧片、导(dao)热(re)安装板、塑料基(ji)板等附件组(zu)成。热(re)干簧继电器不需要线圈励磁,但恒定磁环(huan)产生的磁力驱(qu)动(dong)开关动(dong)作。因此,恒磁环(huan)能否向干簧提供(gong)磁力,取决于感(gan)温磁环(huan)的控温特性。

◈ 固态继电(dian)器的(de)工作(zuo)原理

固态(tai)继电(dian)(dian)器(SSR)是一种以两个端子为(wei)输(shu)(shu)出端的(de)四(si)端器件。它使用隔离(li)(li)装置来实(shi)现(xian)电(dian)(dian)气(qi)隔离(li)(li)输(shu)(shu)入/输(shu)(shu)出。固态(tai)继电(dian)(dian)器按负载电(dian)(dian)源的(de)类型(xing)可分为(wei)交流型(xing)和直流型(xing);按开关类型(xing)分为(wei)常开型(xing)和常闭(bi)型(xing);按隔离(li)(li)方式(shi)可分为(wei)混合式(shi)、变压器隔离(li)(li)式(shi)和光电(dian)(dian)隔离(li)(li)式(shi)。

◈ 电(dian)(dian)流继电(dian)(dian)器的工(gong)作原理(li)及特点

电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)继电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)器(qi)(qi)是根据(ju)线圈(quan)(quan)中(zhong)的(de)(de)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)接通或断(duan)开电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路的(de)(de)继电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)器(qi)(qi)。电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)继电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)器(qi)(qi)的(de)(de)线圈(quan)(quan)在电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路中(zhong)串联(lian)。为(wei)(wei)了(le)不影响电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路的(de)(de)工(gong)作状态,电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)继电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)器(qi)(qi)吸(xi)(xi)(xi)引了(le)较(jiao)(jiao)少(shao)的(de)(de)线圈(quan)(quan)和较(jiao)(jiao)粗的(de)(de)导线。当线圈(quan)(quan)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)高于(yu)设(she)定(ding)值(zhi)时(shi),称(cheng)(cheng)为(wei)(wei)过(guo)流(liu)(liu)(liu)(liu)继电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)器(qi)(qi)。当低于(yu)设(she)定(ding)值(zhi)时(shi),称(cheng)(cheng)为(wei)(wei)欠(qian)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)继电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)器(qi)(qi)。过(guo)流(liu)(liu)(liu)(liu)继电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)器(qi)(qi)正常(chang)工(gong)作时(shi),通过(guo)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)线圈(quan)(quan)的(de)(de)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)为(wei)(wei)额定(ding)值(zhi),因此(ci)产生的(de)(de)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)力(li)不足(zu)以克服反作用(yong)力(li),常(chang)闭触(chu)点保(bao)持闭合(he)。当通过(guo)线圈(quan)(quan)的(de)(de)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)超(chao)过(guo)设(she)定(ding)值(zhi)时(shi),电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)力(li)大于(yu)反作用(yong)弹簧力(li),电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)枢被(bei)铁(tie)芯吸(xi)(xi)(xi)引,使常(chang)闭触(chu)点断(duan)开,常(chang)开触(chu)点闭合(he)。过(guo)流(liu)(liu)(liu)(liu)继电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)器(qi)(qi)主(zhu)要用(yong)于(yu)频繁、重载起动场合(he),作为(wei)(wei)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)动机(ji)或主(zhu)回路的(de)(de)短路、过(guo)载保(bao)护(hu);欠(qian)流(liu)(liu)(liu)(liu)继电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)器(qi)(qi)常(chang)用(yong)于(yu)直(zhi)流(liu)(liu)(liu)(liu)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)动机(ji)和磁(ci)(ci)力(li)吸(xi)(xi)(xi)盘的(de)(de)失(shi)磁(ci)(ci)保(bao)护(hu)。

◈ 热继电器的工作原理及特点

热(re)(re)继电(dian)(dian)(dian)器利用电(dian)(dian)(dian)流(liu)的(de)(de)(de)热(re)(re)效应(ying)切(qie)换(huan)电(dian)(dian)(dian)路(lu)的(de)(de)(de)保(bao)护(hu)电(dian)(dian)(dian)路(lu),作(zuo)为电(dian)(dian)(dian)路(lu)中(zhong)电(dian)(dian)(dian)机的(de)(de)(de)过(guo)(guo)载保(bao)护(hu)。热(re)(re)继电(dian)(dian)(dian)器的(de)(de)(de)工作(zuo)原(yuan)理是(shi)当电(dian)(dian)(dian)机绕组过(guo)(guo)载引起(qi)过(guo)(guo)载电(dian)(dian)(dian)流(liu)时,发(fa)热(re)(re)元件产生(sheng)的(de)(de)(de)热(re)(re)量足(zu)以使主双金(jin)属(shu)片弯曲,推(tui)动导板向(xiang)右移(yi)动推(tui)动温度补偿(chang)片,使推(tui)杆绕轴转动,推(tui)动接触杆,使动触头与静触头分离,使电(dian)(dian)(dian)机回路(lu)中(zhong)的(de)(de)(de)接触器线圈断电(dian)(dian)(dian)释放,切(qie)断电(dian)(dian)(dian)源,保(bao)护(hu)环(huan)境(jing)。温度补偿(chang)片用于(yu)补偿(chang)环(huan)境(jing)温度对热(re)(re)继电(dian)(dian)(dian)器动作(zuo)精度的(de)(de)(de)影响。它由与主双金(jin)属(shu)片相同类型的(de)(de)(de)双金(jin)属(shu)片制成。

继电器

继电器