一、互感器的作用是什么
互(hu)感(gan)器(qi)是電(dian)(dian)(dian)(dian)流互(hu)感(gan)器(qi)和電(dian)(dian)(dian)(dian)壓(ya)互(hu)感(gan)器(qi)的統(tong)稱,又被稱為(wei)儀(yi)用變壓(ya)器(qi)。互(hu)感(gan)器(qi)被廣泛應用于(yu)供(gong)(gong)電(dian)(dian)(dian)(dian)系統(tong)中向測量儀(yi)表和繼電(dian)(dian)(dian)(dian)器(qi)的電(dian)(dian)(dian)(dian)壓(ya)線(xian)圈或電(dian)(dian)(dian)(dian)流線(xian)圈供(gong)(gong)電(dian)(dian)(dian)(dian)。互(hu)感(gan)器(qi)的作用是將交流電(dian)(dian)(dian)(dian)壓(ya)和大(da)電(dian)(dian)(dian)(dian)流按比例降到(dao)可以(yi)用儀(yi)表直接測量的數值,便于(yu)儀(yi)表直接測量,同時為(wei)繼電(dian)(dian)(dian)(dian)保護和自動(dong)裝置提供(gong)(gong)電(dian)(dian)(dian)(dian)源。
二、互感器怎么看倍數
電(dian)(dian)流(liu)互(hu)(hu)(hu)感(gan)器(qi)的倍(bei)率(lv)與互(hu)(hu)(hu)感(gan)器(qi)的變比(bi)(bi)有關,在互(hu)(hu)(hu)感(gan)器(qi)銘牌上有標(biao)識。電(dian)(dian)表的倍(bei)數=電(dian)(dian)流(liu)互(hu)(hu)(hu)感(gan)器(qi)變比(bi)(bi)乘以電(dian)(dian)壓互(hu)(hu)(hu)感(gan)器(qi)變比(bi)(bi),當(dang)沒有電(dian)(dian)壓互(hu)(hu)(hu)感(gan)器(qi),其變比(bi)(bi)按1計算(suan),例如(ru),一次額定(ding)電(dian)(dian)流(liu)為100A,二次額定(ding)電(dian)(dian)流(liu)為5A,那(nei)么該互(hu)(hu)(hu)感(gan)器(qi)的倍(bei)率(lv)為100/5=20。
三、互感器的原理是什么
電流互感(gan)器(qi)的(de)(de)原理是依據(ju)電磁感(gan)應(ying)原理,它的(de)(de)一次(ci)繞組(zu)經常有線(xian)(xian)路的(de)(de)全部(bu)電流流過,電流互感(gan)器(qi)在(zai)工作(zuo)時(shi),它的(de)(de)2次(ci)回(hui)(hui)路始終是閉合的(de)(de),因(yin)此測(ce)量儀表和保護回(hui)(hui)路串聯(lian)線(xian)(xian)圈的(de)(de)阻抗很(hen)小,電流互感(gan)器(qi)的(de)(de)工作(zuo)狀態接近短路。
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(zhu)意根據需求選擇合(he)適的規格(ge),安全性(xing)能(neng)比較要強。