A Digital Protective relay uses a Microcontroller with software based protection algorithms for the detection of electrical faults. The digital protective relay, also called a numeric relay, refer to a protective relay that uses an advanced microcontroller to analyse power system voltages and currents for purpose of detection of faults in an electric power system. The relay applies A/D conversion processes to the incoming voltages and currents. The relay is capable of applying advanced logic. The logic is user configurable at a level well beyond simply changing front panel switches or motion of jumpers on a circuit board.