在高壓(ya)配電(dian)運行或(huo)者低壓(ya)維修過程(cheng)中，我們電(dian)力作業人(ren)員經常都會碰到各種(zhong)各樣的(de)繼(ji)(ji)電(dian)器：，，速度繼(ji)(ji)電(dian)器等(deng)等(deng)，當然也(ye)包(bao)括我們常用(yong)的(de)電(dian)壓(ya)繼(ji)(ji)電(dian)器和，那么電(dian)壓(ya)繼(ji)(ji)電(dian)器和電(dian)流(liu)繼(ji)(ji)電(dian)器有什么區(qu)別呢(ni)？一般都應用(yong)于什么場合？
一、電流繼電器與電壓繼電器在結構上的區別：
主要是線圈(quan)不(bu)同：
電(dian)流(liu)(liu)繼電(dian)器(qi)的線(xian)圈與負(fu)載(zai)串聯以(yi)反映負(fu)載(zai)電(dian)流(liu)(liu)，故(gu)它的線(xian)圈匝數少而導(dao)線(xian)粗，這樣通過電(dian)流(liu)(liu)時的壓(ya)降很小(xiao)，不會影響負(fu)載(zai)電(dian)路(lu)的電(dian)流(liu)(liu)。電(dian)壓(ya)繼電(dian)器(qi)的線(xian)圈與負(fu)載(zai)并(bing)聯以(yi)反映負(fu)載(zai)電(dian)壓(ya)，其線(xian)圈匝數多而導(dao)線(xian)細(xi)。
二、電流型信號繼電器和電壓型信號繼電器的區別？在使用中如何區分？
電流(liu)型信號繼電器：
電壓低(di)，電流(liu)大，線經(jing)粗，圈(quan)數少，阻抗(kang)小(xiao)，體(ti)積小(xiao)，一般是與用電器串聯使(shi)用；
電壓型信號繼電器：
電壓高(gao)，電流(liu)小，線經細，圈數多，阻抗大，體積大，一般是通過(guo)開關直接(jie)接(jie)在電源兩端。
三、電壓繼電器、電流繼電器的特點與應用場合：
1、電壓繼電器的特點與(yu)應用場(chang)合：
（1）電(dian)壓繼(ji)電(dian)器(qi)(qi)是(shi)一種常(chang)用的(de)電(dian)磁(ci)式繼(ji)電(dian)器(qi)(qi)，電(dian)壓繼(ji)電(dian)器(qi)(qi)用于電(dian)力(li)拖動系(xi)統的(de)電(dian)壓保護和控制；
（2）電壓繼電器的線圈并(bing)聯接(jie)入主電路，感測主電路的線路電壓；觸點接(jie)于(yu)控制電路，為執行元件；
（3）按吸合電(dian)(dian)(dian)壓的大小，電(dian)(dian)(dian)壓繼(ji)電(dian)(dian)(dian)器可分為過電(dian)(dian)(dian)壓繼(ji)電(dian)(dian)(dian)器和欠電(dian)(dian)(dian)壓繼(ji)電(dian)(dian)(dian)器；
（4）過電(dian)壓(ya)(ya)(ya)繼電(dian)器（FV）用(yong)于(yu)線路(lu)(lu)的(de)過電(dian)壓(ya)(ya)(ya)保(bao)護(hu)(hu)(hu)，其吸合(he)整(zheng)定值(zhi)為被保(bao)護(hu)(hu)(hu)線路(lu)(lu)額定電(dian)1.05～1.2倍(bei)。當(dang)被保(bao)護(hu)(hu)(hu)的(de)線路(lu)(lu)電(dian)壓(ya)(ya)(ya)正(zheng)常時，銜鐵(tie)(tie)不動(dong)作；當(dang)被保(bao)護(hu)(hu)(hu)線路(lu)(lu)的(de)電(dian)壓(ya)(ya)(ya)高于(yu)額定值(zhi)，達(da)到(dao)過電(dian)壓(ya)(ya)(ya)繼電(dian)器的(de)整(zheng)定值(zhi)時，銜鐵(tie)(tie)吸合(he)，觸點機構動(dong)作，控制電(dian)路(lu)(lu)失電(dian)，控制接觸器及時分斷被保(bao)護(hu)(hu)(hu)電(dian)路(lu)(lu)；
（5）欠電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)繼電(dian)(dian)(dian)(dian)(dian)(dian)器（KV）用于(yu)線(xian)(xian)路(lu)的欠電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)保(bao)護(hu)(hu)(hu)，其釋放整(zheng)定(ding)值為線(xian)(xian)路(lu)額定(ding)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)的0.1～0.6倍。當被(bei)保(bao)護(hu)(hu)(hu)線(xian)(xian)路(lu)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)正常(chang)時(shi)(shi)，銜鐵(tie)可靠吸合；當被(bei)保(bao)護(hu)(hu)(hu)線(xian)(xian)路(lu)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)降至欠電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)繼電(dian)(dian)(dian)(dian)(dian)(dian)器的釋放整(zheng)定(ding)值時(shi)(shi)，銜鐵(tie)釋放，觸點機構復位，控制接觸器及時(shi)(shi)分斷(duan)被(bei)保(bao)護(hu)(hu)(hu)電(dian)(dian)(dian)(dian)(dian)(dian)路(lu)。零(ling)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)繼電(dian)(dian)(dian)(dian)(dian)(dian)器是(shi)當電(dian)(dian)(dian)(dian)(dian)(dian)路(lu)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)降低到5％～25％UN時(shi)(shi)釋放，對電(dian)(dian)(dian)(dian)(dian)(dian)路(lu)實現零(ling)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)保(bao)護(hu)(hu)(hu)。用于(yu)線(xian)(xian)路(lu)的失壓(ya)保(bao)護(hu)(hu)(hu)；
（6）補充小技(ji)能(neng)：中(zhong)(zhong)間繼(ji)電器實質上是一種電壓繼(ji)電器。它的特點是觸(chu)點數(shu)目較多(duo)，電流(liu)(liu)容量可增大(da)，起(qi)到中(zhong)(zhong)間放大(da)（觸(chu)點數(shu)目和電流(liu)(liu)容量）的作(zuo)用(yong)。
2、電(dian)流繼電(dian)器(qi)的特點與應用(yong)場合(he)：
（1）電(dian)流繼電(dian)器是一種(zhong)常用的電(dian)磁式繼電(dian)器，電(dian)流繼電(dian)器用于(yu)電(dian)力拖動系統的電(dian)流保護和控制(zhi)。其線圈(quan)串聯接(jie)入主(zhu)電(dian)路，用來(lai)感測主(zhu)電(dian)路的線路電(dian)流；觸點接(jie)于(yu)控制(zhi)電(dian)路，為(wei)執(zhi)行元件；
（2）電流繼(ji)電器(qi)反映(ying)的是電流信號。常用(yong)的電流繼(ji)電器(qi)有欠電流繼(ji)電器(qi)和過電流繼(ji)電器(qi)兩種(zhong)；
（3）欠(qian)電(dian)流繼(ji)(ji)電(dian)器（KA）用于電(dian)路(lu)(lu)起欠(qian)電(dian)流保(bao)護，吸引(yin)電(dian)流為線圈額(e)(e)定(ding)電(dian)流30％～65％，釋(shi)(shi)放(fang)(fang)電(dian)流為額(e)(e)定(ding)電(dian)流10％～20％，因此，在電(dian)路(lu)(lu)正常工(gong)作時，銜鐵是吸合的，只有(you)當電(dian)流降低到某一(yi)整定(ding)值時，繼(ji)(ji)電(dian)器釋(shi)(shi)放(fang)(fang)，控制(zhi)電(dian)路(lu)(lu)失電(dian)，從而控制(zhi)接觸器及(ji)時分斷電(dian)路(lu)(lu)；
（4）過電(dian)(dian)流(liu)繼電(dian)(dian)器(qi)（FA）在電(dian)(dian)路(lu)(lu)正常工作(zuo)時不動作(zuo)，整定(ding)范圍通常為額(e)定(ding)電(dian)(dian)流(liu)1.1～4倍，當(dang)被保護線路(lu)(lu)的電(dian)(dian)流(liu)高于額(e)定(ding)值(zhi)，達到過電(dian)(dian)流(liu)繼電(dian)(dian)器(qi)的整定(ding)值(zhi)時，銜鐵吸合，觸點機構動作(zuo)，控制(zhi)電(dian)(dian)路(lu)(lu)失電(dian)(dian)，從而控制(zhi)接觸器(qi)及時分斷(duan)電(dian)(dian)路(lu)(lu)。對電(dian)(dian)路(lu)(lu)起過流(liu)保護作(zuo)用；
（5）JT4系列交流電(dian)(dian)(dian)磁繼(ji)電(dian)(dian)(dian)器(qi)(qi)適合于(yu)交流50Hz，380V及以下的自動(dong)控制(zhi)回路(lu)中作(zuo)零電(dian)(dian)(dian)壓、過電(dian)(dian)(dian)壓、過電(dian)(dian)(dian)流和中間繼(ji)電(dian)(dian)(dian)器(qi)(qi)使用，過電(dian)(dian)(dian)流繼(ji)電(dian)(dian)(dian)器(qi)(qi)也適用于(yu)60Hz交流電(dian)(dian)(dian)路(lu)；
（6）通用電(dian)磁(ci)式(shi)(shi)繼電(dian)器有：直流電(dian)磁(ci)式(shi)(shi)和交流電(dian)磁(ci)式(shi)(shi)繼電(dian)器。
