Abstract: A method of detecting faults in three-phase power lines, including sampling current from die three phase power lines using a set of three sensors each located on a respective power line, processing the current samples from each of the three power lines and translating them to a representation of the current in the respective power lines using a processor provided in each of the sensors, wherein one of the sensors serves as a master sensor and two of the sensors serve as slave sensors, transmitting to the master sensor the representation of the current using a transceiver provided in each sensor, calculating, a representation of a three phase current from the representation of the current from the master sensor and the slave sensors, and identifying at the master sensor, a possible fault in the three phase power lines responsive to the calculated representation of the three phase current.

Abstract: A system for harvesting power from AC current in a power line, including a split magnetic core having two halves, wherein the two halves of the magnetic core are configured to enclose around the power line; a coil is wrapped around one or two halves of the magnetic core with a first end and a second end of the coil configured to provide current from the coil; a power harvesting circuit is configured to harvest current from AC current in the power line, the power harvesting circuit including a rectifier and at least one voltage multiplier electrically connected in parallel to the rectifier; and wherein an output of the coil is connected to an input of said power harvesting circuit and an output of the power harvesting circuit is configured to supply voltage and current to load circuits.