... , Uc, Uab, Ubc, Uca,2. Current—Ia, Ib, Ic, In3. Active power – Pa, Pb, Pc, ∑P4. Reactive power –Qa, Qb, Qc ... , Sb, Sc, ∑Q6. Power factor—PFa, PFb, PFc, ∑PF7. Frequency8. Active energy—4 quadrant kWh9. Reactive energy– 4 quadrant kvarh Optional ... Function:1. Statistics of multi-tariff energy: 8 periods of time, 4 different tariff2. Record historical energy value ...