These panel meters including voltmeters, ammeters, frequencymeteres, multimeters and analyzers (DV, DA, DM, DF, DVF and DKM series) are designed for accurate measurement of the AC RMS voltage, current, frequency, active power, power factor and many other parameters in single and 3 phase systems. Although they are mainly used in electrical panels, these devices can also be integrated in many other applications.
These controllers are used in telecom and other battery power supply systems. It monitors the battery bank discharge level in order to provide external battery charging systems like generating sets.