Intelligent electricity quantity concentration display instrument is a kind of intelligent instrument used to measure combined parameter of ac electricity quantity , which can simultaneously measure each phase electricity parameter in the tri - phase ac loop such as voltage , current , active power , reactive power , apparent power , power factor , frequency , active kilowatt hour , reactive kilovolt ampere - hour and so on 智能電量集中顯示儀是一種用于交流電量綜合參數(shù)測(cè)量的智能儀表,它可以同時(shí)測(cè)量三相交流回路的每一相電壓電流有功功率無功功率視在功率功率因數(shù)頻率有功電度無功電度等參數(shù)。