... series 3 phase multi-function power meter:1) To measure: Voltage, Current, Active Power, Reactive Power, Power Factor, Frequency (Hz), Kwh ... output 4-20mA for voltage, current, active power, reactive power, frequency, power factor;8) With RS485 communication function (Modbus RTU ... . Current—Ia, Ib, Ic, In3. Active power – Pa, Pb, Pc, ∑P4. Reactive power –Qa, Qb, Qc, ∑Q5. Power factor—PFa, PFb, PFc ...