一、互感器的作用是什么
互(hu)感(gan)器(qi)是(shi)電(dian)(dian)(dian)(dian)流(liu)互(hu)感(gan)器(qi)和(he)電(dian)(dian)(dian)(dian)壓(ya)(ya)互(hu)感(gan)器(qi)的(de)統稱(cheng)(cheng),又被稱(cheng)(cheng)為(wei)儀用(yong)變壓(ya)(ya)器(qi)。互(hu)感(gan)器(qi)被廣泛應用(yong)于(yu)供(gong)電(dian)(dian)(dian)(dian)系統中向測(ce)(ce)量儀表(biao)(biao)和(he)繼(ji)電(dian)(dian)(dian)(dian)器(qi)的(de)電(dian)(dian)(dian)(dian)壓(ya)(ya)線圈或電(dian)(dian)(dian)(dian)流(liu)線圈供(gong)電(dian)(dian)(dian)(dian)。互(hu)感(gan)器(qi)的(de)作用(yong)是(shi)將交流(liu)電(dian)(dian)(dian)(dian)壓(ya)(ya)和(he)大電(dian)(dian)(dian)(dian)流(liu)按比(bi)例降到可以用(yong)儀表(biao)(biao)直(zhi)接測(ce)(ce)量的(de)數值,便于(yu)儀表(biao)(biao)直(zhi)接測(ce)(ce)量,同時為(wei)繼(ji)電(dian)(dian)(dian)(dian)保護和(he)自(zi)動裝(zhuang)置(zhi)提供(gong)電(dian)(dian)(dian)(dian)源。
二、互感器怎么看倍數
電(dian)(dian)流(liu)互感(gan)(gan)(gan)器(qi)的(de)(de)(de)倍(bei)(bei)率與(yu)互感(gan)(gan)(gan)器(qi)的(de)(de)(de)變(bian)比(bi)有(you)關(guan),在互感(gan)(gan)(gan)器(qi)銘(ming)牌上(shang)有(you)標識。電(dian)(dian)表的(de)(de)(de)倍(bei)(bei)數=電(dian)(dian)流(liu)互感(gan)(gan)(gan)器(qi)變(bian)比(bi)乘以電(dian)(dian)壓(ya)互感(gan)(gan)(gan)器(qi)變(bian)比(bi),當沒有(you)電(dian)(dian)壓(ya)互感(gan)(gan)(gan)器(qi),其變(bian)比(bi)按1計算,例如(ru),一(yi)次額定電(dian)(dian)流(liu)為(wei)100A,二次額定電(dian)(dian)流(liu)為(wei)5A,那么該互感(gan)(gan)(gan)器(qi)的(de)(de)(de)倍(bei)(bei)率為(wei)100/5=20。
三、互感器的原理是什么
電(dian)(dian)流互感器(qi)的(de)(de)原理(li)是依據電(dian)(dian)磁感應原理(li),它的(de)(de)一次(ci)繞組經常有(you)線(xian)(xian)路(lu)(lu)的(de)(de)全部電(dian)(dian)流流過,電(dian)(dian)流互感器(qi)在工作時,它的(de)(de)2次(ci)回(hui)路(lu)(lu)始終是閉合的(de)(de),因此測(ce)量(liang)儀表(biao)和保(bao)護(hu)回(hui)路(lu)(lu)串聯線(xian)(xian)圈(quan)的(de)(de)阻抗很(hen)小,電(dian)(dian)流互感器(qi)的(de)(de)工作狀(zhuang)態接(jie)近(jin)短路(lu)(lu)。
四、互感器的規格
互感器的規格通常指的是互感器變比的規格,電流互感器變比的規格很多:50/5,75/5,100/5,150/5,200/5,250/5,300/5,400/5,600/5,800/5,1000/5,1200/5,2000/5,4000/5,選購互感器品牌時注意根據需求(qiu)選擇合適(shi)的規格,安全性能比較(jiao)要強。