1.分為兩元件和三(san)(san)元件兩種。兩元件中A、C兩相(xiang)裝有(you)電(dian)(dian)壓(ya)(ya)、電(dian)(dian)流互(hu)感器(qi)(qi)，電(dian)(dian)壓(ya)(ya)互(hu)感器(qi)(qi)為V/V接線。二次(ci)電(dian)(dian)壓(ya)(ya)為100V。配用(yong)三(san)(san)相(xiang)三(san)(san)線電(dian)(dian)能表。三(san)(san)元件中A、B、C為一只三(san)(san)相(xiang)電(dian)(dian)壓(ya)(ya)互(hu)感器(qi)(qi)、三(san)(san)只電(dian)(dian)流互(hu)感器(qi)(qi)，電(dian)(dian)壓(ya)(ya)互(hu)感器(qi)(qi)為Y/Y接線。二次(ci)電(dian)(dian)壓(ya)(ya)為100/√3，可(ke)選用(yong)100V的三(san)(san)相(xiang)四線電(dian)(dian)能表。