... -tariff energy 3. RS485/Modb 3-phase panel mounted energy meter detailed product description 1. LCD screen, measuring kWh value, voltage, current, power, power ... —Ua, Ub, Uc, Uab, Ubc, Uca,2. Current—Ia, Ib, Ic, In3. Active power – Pa, Pb, Pc, ∑P4. Reactive power –Qa ... %Frequency0.01Active energy0.5%Reactive energy2.0% PMAC905 RS485 energy meter kwh meter