Abstract: Nowadays, underground cables are used rather than overhead lines in urban areas. Locating the faults in the cables under the ground is a tedious task and there's a prospect of damaging the insulation while digging the cable. The aim of this research paper is to ascertain the distance of underground 3 phase transmission line faults from the base station in kilometers. This prototype uses the lucid concept of Ohm’s law. The current would alter depending upon the length of fault of the cable. The proposed system finds the precise location of the fault. It's modeled with a group of resistors representing cable in kilometers and fault creation is formed by a collection of switches at every known distance to cross-check the accuracy of the identical. The information is shipped to the user by employing a GSM and GPS module.

| DOI: 10.17148/IJIREEICE.2022.10426