Patent ID: 7336065
Filing Date: 2008-02-26
Classification: G01R

Abstract:
1. An energy device for measuring the delivery and generation of electrical energy from an energy supplier to a shared energy grid through an electric circuit, the energy device comprising: a sensor configured to sense a current or a voltage of the electric circuit and configured to generate digital samples indicative of the current or voltage; a microprocessor coupled with the sensor, configured to receive the digital samples, and configured to generate a measurement signal in response to the samples; wherein the measurement signal is indicative of energy through the electric circuit to within an accuracy of 1.0% allowable error in energy over a 10 mA to 20 A current with a power factor near unity; and wherein the sensor and the microprocessor are further configured so that the measurement signal generated therefrom satisfies each of at least four accuracy categories, wherein each of the at least four accuracy categories are operable to satisfy at least one standard and cover the dynamic range of 10 mA to 20 A.