Patent ID: 8847577
Filing Date: 2014-09-30
Classification: G01R

Abstract:
1. A system for measuring the amount of current flowing from a utility source to one or more electric loads through at least one bus bar contained in an electric meter, the system comprising: an inductor positioned in series with the bus bar such that the current flowing to the one or more loads passes through the inductor; a voltage detector positioned to detect the voltage across the inductor created by the flow of current through the bus bar from the utility source to the one or more electric loads; a control unit coupled to the voltage detector and operable to calculate the current flowing through the bus bar of the electric meter from the utility source to the one or more electric loads based on the value of the inductor and the detected voltage; wherein the control unit is mounted to a circuit board contained within the electric meter, wherein the inductor is formed on the circuit board, wherein the inductor includes a plurality of turns; and wherein the inductor includes a combination of self-inductance and mutual inductance required to measure current.