... short terminal cover 3.IEC62053-21 DD862 single phase mechanical power meteris a kind of induction meter, ... be anti-reverse;♦The bearing has four kinds: single-jewel, dual-jewel, magnetic thrust ;♦The die ... wiring optional, standard or special one;♦Single component measures single-phase two-wire active energy consumption,Complying ... 10(40), 15(60), 20(80), 30(100)400%Ib0.5%IbAC Voltage 2kV for 1minute,1 ...