... phase or 3-phase active(reactive)power value in an electric circuit. ... LED display(red or green)Auxiliary power:AC 220V±10%, 50/60Hz ... reading±1digit(active power), ±1.0%reading±1digit(reactive power)Resolution:Maximum:1W ... sOverflow indication:Displaying characterHHHHHorLLLLPolar indication:Backward power can be indicated,negative signal ... voltage:AC 110V,220V,380V(with programmable PT ratio)Rated input ...