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 designed to protect various electrical equipment from failure when different electrical and temperature parameters deviate from their nominal values.