... 110V,120V,127V,220V,230V,240V 3.single-phase ApplicationDD28 single phase energy meter (KWH meter) is a kind of induction meter with glass cover, which is applicable ... IEC 521.Structure and features:The meter has separable electromagnet, and the bearing has four kinds: single-jewel, dual jewel, magnetic ... alloy aluminum with excellent mechanical strength. Technical data DD28 Single Phase Energy Meter