1. electronic power meter measure voltage, current, power, power factor, Hz, kWh, kvarh, harmonics 2 ... brightness, auto-scrolling6. High accuracy, V or I is 0.2%, kWh is class 17. CT and PT programmable8. ... parameters:1. Voltage—Ua, Ub, Uc, Uab, Ubc, Uca,2. Current—Ia, Ib, Ic, In3. Active power – Pa, Pb, Pc ... .5%Power factor0.5%Frequency0.01Active energy1.0%Reactive energy2.0%Harmonic1.0%Un-balance rate1 ...