組合互(hu)感(gan)器實際(ji)上就(jiu)是(shi)電(dian)壓互(hu)感(gan)器和電(dian)流(liu)互(hu)感(gan)器的(de)組合，用于計(ji)量電(dian)業局收(shou)費用。
表為電(dian)(dian)(dian)業局免(mian)費(fei)掛，可所(suo)以一(yi)個(ge)(ge)電(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)互(hu)(hu)(hu)感(gan)器(qi)(qi)(qi)(qi)和一(yi)個(ge)(ge)電(dian)(dian)(dian)流(liu)互(hu)(hu)(hu)感(gan)器(qi)(qi)(qi)(qi)的組(zu)合(he)，用(yong)于檢測(ce)單相(xiang)功(gong)率(lv)(lv)；可所(suo)以兩個(ge)(ge)電(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)互(hu)(hu)(hu)感(gan)器(qi)(qi)(qi)(qi)和兩個(ge)(ge)電(dian)(dian)(dian)流(liu)互(hu)(hu)(hu)感(gan)器(qi)(qi)(qi)(qi)的組(zu)合(he)，用(yong)于在(zai)三(san)相(xiang)三(san)線(xian)制中按兩瓦計法檢測(ce)三(san)相(xiang)功(gong)率(lv)(lv)；也可所(suo)以三(san)個(ge)(ge)電(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)互(hu)(hu)(hu)感(gan)器(qi)(qi)(qi)(qi)和三(san)個(ge)(ge)電(dian)(dian)(dian)流(liu)互(hu)(hu)(hu)感(gan)器(qi)(qi)(qi)(qi)的組(zu)合(he)，用(yong)于三(san)相(xiang)電(dian)(dian)(dian)檢測(ce)。接變(bian)壓(ya)(ya)(ya)(ya)器(qi)(qi)(qi)(qi)時(shi)，組(zu)合(he)時(shi)互(hu)(hu)(hu)感(gan)器(qi)(qi)(qi)(qi)電(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)端(duan)子與變(bian)壓(ya)(ya)(ya)(ya)器(qi)(qi)(qi)(qi)輸出并聯，變(bian)壓(ya)(ya)(ya)(ya)器(qi)(qi)(qi)(qi)電(dian)(dian)(dian)流(liu)線(xian)穿過組(zu)合(he)式互(hu)(hu)(hu)感(gan)器(qi)(qi)(qi)(qi)。組(zu)合(he)式互(hu)(hu)(hu)感(gan)器(qi)(qi)(qi)(qi)在(zai)高壓(ya)(ya)(ya)(ya)電(dian)(dian)(dian)網中一(yi)般其電(dian)(dian)(dian)能(neng)計量作用(yong)。
接(jie)變壓(ya)(ya)器(qi)(qi)(qi)時，組合時互(hu)(hu)感(gan)器(qi)(qi)(qi)電(dian)(dian)(dian)壓(ya)(ya)端子與變壓(ya)(ya)器(qi)(qi)(qi)輸出并聯，變壓(ya)(ya)器(qi)(qi)(qi)電(dian)(dian)(dian)流(liu)線穿過組合式(shi)互(hu)(hu)感(gan)器(qi)(qi)(qi)。組合式(shi)互(hu)(hu)感(gan)器(qi)(qi)(qi)在高壓(ya)(ya)電(dian)(dian)(dian)網(wang)中一(yi)般其電(dian)(dian)(dian)能計量作用。組合式(shi)互(hu)(hu)感(gan)器(qi)(qi)(qi)與電(dian)(dian)(dian)壓(ya)(ya)互(hu)(hu)感(gan)器(qi)(qi)(qi)及電(dian)(dian)(dian)流(liu)互(hu)(hu)感(gan)器(qi)(qi)(qi)相同，二次輸出能夠接(jie)負載(zai)，但是，負載(zai)一(yi)般不宜跨過互(hu)(hu)感(gan)器(qi)(qi)(qi)標稱的額外負荷。
首(shou)要(yao)作用
組合式互感器與電壓(ya)互感器及電流互感器相同，二(er)次輸出(chu)能夠接負(fu)(fu)載(zai)，但是，負(fu)(fu)載(zai)一(yi)般(ban)不宜跨(kua)過互感器標稱的額(e)外負(fu)(fu)荷(he)。
但是你知(zhi)道電壓互感器與電流互感器之(zhi)間的差(cha)異(yi)嗎？
首要(yao)差異是(shi)正(zheng)常(chang)運行時作業情況大不(bu)相同，首要(yao)表(biao)現為:
1)電(dian)(dian)流互感器二(er)(er)次能(neng)夠短(duan)路(lu)，但是不得開路(lu)；電(dian)(dian)壓互感器二(er)(er)次能(neng)夠開路(lu)，但是不得短(duan)路(lu)
2)關于二次側的負荷來說，電壓(ya)互(hu)感器(qi)的一(yi)次內阻(zu)抗較小甚至能夠(gou)忽略不計，大能夠(gou)以為電壓(ya)互(hu)感器(qi)是一(yi)個電壓(ya)源；而(er)電流互(hu)感器(qi)的一(yi)次卻內阻(zu)很大,致(zhi)使能(neng)夠以為是一個內(nei)阻無窮大的電流源。
3)電壓(ya)互感器正常作業時的磁(ci)通(tong)(tong)密(mi)度靠近飽(bao)滿值(zhi)，缺陷時分磁(ci)通(tong)(tong)密(mi)度下降；電流(liu)互感器正常作業時磁(ci)通(tong)(tong)密(mi)度很低，而短(duan)路時因為一次側(ce)短(duan)路電流(liu)變得很大，使磁(ci)通(tong)(tong)密(mi)度大大增加，有時甚(shen)至遠(yuan)遠(yuan)跨過飽(bao)滿值(zhi).
4)電(dian)(dian)壓(ya)(ya)互(hu)感(gan)器是用來檢(jian)測電(dian)(dian)網(wang)高電(dian)(dian)壓(ya)(ya)的特別變壓(ya)(ya)器，它(ta)能將高電(dian)(dian)壓(ya)(ya)按規則份額轉換為較低的電(dian)(dian)壓(ya)(ya)后，再聯接到外表(biao)上去檢(jian)測。電(dian)(dian)壓(ya)(ya)互(hu)感(gan)器，原邊電(dian)(dian)壓(ya)(ya)不論(lun)是多(duo)少伏，而副邊電(dian)(dian)壓(ya)(ya)一(yi)般均規則為100伏，以供給電(dian)(dian)壓(ya)表、功(gong)率表及(ji)千瓦小時表和(he)繼電(dian)(dian)器的電(dian)(dian)壓(ya)線(xian)圈所需求的電(dian)(dian)壓(ya)。把大電(dian)(dian)流按規則(ze)份額轉換為小電(dian)(dian)流的電(dian)(dian)氣設備，稱為電(dian)(dian)流互(hu)感器。電(dian)(dian)流互(hu)感器副邊的電(dian)(dian)流一(yi)般規則(ze)為5安或1安，以供給電(dian)流(liu)表(biao)、功率(lv)表(biao)、千瓦小時表(biao)和繼電(dian)器的(de)電(dian)流(liu)線圈電(dian)流(liu)。
