... .Rated voltage:110V,120V,127V,220V,230V,240V 3.single-phase ApplicationDD28 single phase energy meter (KWH meter) is a kind ... measure the rated frequency 50Hz and power loss in electrified wire netting.All technical targets are completely conformed to national ... meter has separable electromagnet, and the bearing has four kinds: single-jewel, dual jewel, magnetic thrust and magnetic floating. The ...