2008. Design Three Phase Overcurrent Relays Based on MicrocomputerA new design of three phase overcurrent relay described in this paper. The performance of the new design shows the ability to obtain any shape of characteristic with high accuracy and distinguish. Tikrit Journal of Engineering Sciences. 15, 2 (Jun. 2008), 79–89. DOI:https://doi.org/10.25130/tjes.15.2.06.