組合(he)互感(gan)器實際(ji)上就是(shi)電壓互感(gan)器和(he)電流互感(gan)器的組合(he)，用于計量電業局(ju)收費用。

表為電(dian)(dian)(dian)(dian)業(ye)局免費掛，可(ke)所以一個電(dian)(dian)(dian)(dian)壓(ya)互(hu)(hu)(hu)感(gan)器(qi)和一個電(dian)(dian)(dian)(dian)流互(hu)(hu)(hu)感(gan)器(qi)的組(zu)合，用(yong)于檢(jian)測單相(xiang)功率(lv)；可(ke)所以兩(liang)個電(dian)(dian)(dian)(dian)壓(ya)互(hu)(hu)(hu)感(gan)器(qi)和兩(liang)個電(dian)(dian)(dian)(dian)流互(hu)(hu)(hu)感(gan)器(qi)的組(zu)合，用(yong)于在(zai)三相(xiang)三線(xian)制中(zhong)按(an)兩(liang)瓦計法(fa)檢(jian)測三相(xiang)功率(lv)；也可(ke)所以三個電(dian)(dian)(dian)(dian)壓(ya)互(hu)(hu)(hu)感(gan)器(qi)和三個電(dian)(dian)(dian)(dian)流互(hu)(hu)(hu)感(gan)器(qi)的組(zu)合，用(yong)于三相(xiang)電(dian)(dian)(dian)(dian)檢(jian)測。接變(bian)壓(ya)器(qi)時，組(zu)合時互(hu)(hu)(hu)感(gan)器(qi)電(dian)(dian)(dian)(dian)壓(ya)端子與變(bian)壓(ya)器(qi)輸出并聯，變(bian)壓(ya)器(qi)電(dian)(dian)(dian)(dian)流線(xian)穿過(guo)組(zu)合式互(hu)(hu)(hu)感(gan)器(qi)。組(zu)合式互(hu)(hu)(hu)感(gan)器(qi)在(zai)高壓(ya)電(dian)(dian)(dian)(dian)網(wang)中(zhong)一般其電(dian)(dian)(dian)(dian)能計量作用(yong)。

接(jie)變(bian)壓(ya)器(qi)時，組合(he)時互(hu)(hu)感(gan)器(qi)電(dian)(dian)壓(ya)端(duan)子與變(bian)壓(ya)器(qi)輸出并聯，變(bian)壓(ya)器(qi)電(dian)(dian)流線穿(chuan)過組合(he)式(shi)互(hu)(hu)感(gan)器(qi)。組合(he)式(shi)互(hu)(hu)感(gan)器(qi)在高壓(ya)電(dian)(dian)網中一般(ban)其(qi)電(dian)(dian)能(neng)計(ji)量(liang)作用。組合(he)式(shi)互(hu)(hu)感(gan)器(qi)與電(dian)(dian)壓(ya)互(hu)(hu)感(gan)器(qi)及電(dian)(dian)流互(hu)(hu)感(gan)器(qi)相同(tong)，二次輸出能(neng)夠接(jie)負(fu)載，但是，負(fu)載一般(ban)不宜跨過互(hu)(hu)感(gan)器(qi)標稱的額外負(fu)荷。

首要作用

組合式(shi)互感器(qi)與電壓(ya)互感器(qi)及電流(liu)互感器(qi)相同，二次輸出能夠接負(fu)載，但是，負(fu)載一般不宜跨(kua)過互感器(qi)標稱(cheng)的額外負(fu)荷。

但是你知道電壓互感器(qi)與電流(liu)互感器(qi)之間的差異嗎？

首(shou)要差(cha)異是正常運行時作業情(qing)況大不相(xiang)同，首(shou)要表(biao)現為:

1)電(dian)流(liu)互(hu)感器二次能(neng)夠(gou)(gou)短路(lu)(lu)，但是不得(de)開(kai)路(lu)(lu)；電(dian)壓(ya)互(hu)感器二次能(neng)夠(gou)(gou)開(kai)路(lu)(lu)，但是不得(de)短路(lu)(lu)

2)關(guan)于二次側的負荷(he)來說，電(dian)壓互(hu)感器(qi)的一次內阻(zu)抗較小甚至能夠(gou)忽略不計(ji)，大能夠(gou)以(yi)為電(dian)壓互(hu)感器(qi)是一個電(dian)壓源(yuan)(yuan)；而電(dian)流互(hu)感器(qi)的一次卻內阻(zu)很(hen)大,致(zhi)使(shi)能夠(gou)以(yi)為是一個內阻(zu)無窮大的電(dian)流源(yuan)(yuan)。

3)電壓互感器正常作業時(shi)(shi)的磁(ci)通(tong)(tong)(tong)密(mi)(mi)度(du)靠近飽滿值，缺陷時(shi)(shi)分磁(ci)通(tong)(tong)(tong)密(mi)(mi)度(du)下(xia)降；電流互感器正常作業時(shi)(shi)磁(ci)通(tong)(tong)(tong)密(mi)(mi)度(du)很低，而短(duan)路時(shi)(shi)因(yin)為一次側(ce)短(duan)路電流變得很大，使磁(ci)通(tong)(tong)(tong)密(mi)(mi)度(du)大大增加，有時(shi)(shi)甚至遠遠跨過飽滿值.

4)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)互感(gan)器(qi)(qi)是用來檢測電(dian)(dian)(dian)(dian)(dian)(dian)網高(gao)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)的(de)特別變壓(ya)(ya)(ya)器(qi)(qi)，它能(neng)將高(gao)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)按規(gui)則(ze)(ze)份額轉換為(wei)(wei)較(jiao)低的(de)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)后，再聯接到外表(biao)上去檢測。電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)互感(gan)器(qi)(qi)，原邊(bian)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)不論是多少伏，而副邊(bian)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)一般(ban)均規(gui)則(ze)(ze)為(wei)(wei)100伏，以(yi)供給電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)表(biao)、功率(lv)表(biao)及千瓦小時表(biao)和繼電(dian)(dian)(dian)(dian)(dian)(dian)器(qi)(qi)的(de)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)線(xian)圈所需求的(de)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)。把大電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)按規(gui)則(ze)(ze)份額轉換為(wei)(wei)小電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)的(de)電(dian)(dian)(dian)(dian)(dian)(dian)氣(qi)設備，稱(cheng)為(wei)(wei)電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)互感(gan)器(qi)(qi)。電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)互感(gan)器(qi)(qi)副邊(bian)的(de)電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)一般(ban)規(gui)則(ze)(ze)為(wei)(wei)5安(an)或1安(an)，以(yi)供給電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)表(biao)、功率(lv)表(biao)、千瓦小時表(biao)和繼電(dian)(dian)(dian)(dian)(dian)(dian)器(qi)(qi)的(de)電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)線(xian)圈電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)。