組(zu)(zu)合(he)互(hu)感器可(ke)將高電(dian)(dian)(dian)壓(ya)(ya)變(bian)化(hua)為低電(dian)(dian)(dian)壓(ya)(ya)，將大電(dian)(dian)(dian)流變(bian)化(hua)為低電(dian)(dian)(dian)流，從而起到對電(dian)(dian)(dian)能計量的(de)意(yi)圖。組(zu)(zu)合(he)互(hu)感器的(de)結構較(jiao)為簡單(dan)，由(you)相互(hu)絕緣(yuan)的(de)一次(ci)繞(rao)組(zu)(zu)、二(er)(er)次(ci)繞(rao)組(zu)(zu)、鐵(tie)心以及構架、殼體(ti)、接線(xian)端(duan)子等組(zu)(zu)成(cheng)。其工作原理與變(bian)壓(ya)(ya)器根本相同(tong)，一次(ci)繞(rao)組(zu)(zu)的(de)匝數(N1)較(jiao)少，直接串聯于(yu)電(dian)(dian)(dian)源線(xian)路中，一次(ci)負荷(he)電(dian)(dian)(dian)流()通(tong)過一次(ci)繞(rao)組(zu)(zu)時，發(fa)生(sheng)的(de)交變(bian)磁通(tong)感應發(fa)生(sheng)按比(bi)例(li)減小的(de)二(er)(er)次(ci)電(dian)(dian)(dian)流();二(er)(er)次(ci)繞(rao)組(zu)(zu)的(de)匝數(N2)較(jiao)多。