... . RS485/Modbus, Profibus, Bacnet function 3. 8MB PMAC770 Multifunction Power Meter ØSuit for LV/ HV voltage system For low voltage system ... measurement True-RMS measuring parameters includes: U, I, P, Q, S, PF, F, kWh, kvarh, demand, max./min. value, ØDemand calculation ... .0%Harmonic1.0%Unbalance rate1.0% PMAC770 panel mounted power meter data log