... RS485, DI+DO, Modbus/ Profibus, The PMAC720 Multifunction Power Analyser is suit for up to 220kV system.The compact ... and displaying electric parameters include voltage, current, active power, reactive power, power factor, frequency, active energy and reactive energy.Additional, ... Consist of basic unit and optional modules4. 10 years back-up of integrated energy data5. Large LCD, high brightness ...