Patent ID: 7191076
Filing Date: 2007-03-13
Classification: G01D,G01R,H04L,Y02B,Y04S

Abstract:
1. An IED comprising: a power monitoring circuit operative to monitor a voltage and a current of a portion of a power distribution system and generate a first analog signal representative of said voltage and a second analog signal representative of said current; a processor coupled with said power monitoring circuit, said processor comprising an analog to digital converter operative to convert said first and second analog signals to first and second digital signals representative thereof, said processor operative to implement first power management functionality and generate first power management data; at least one of a display and a communications interface coupled with said processor and operative to communicate said first power management data external to said IED; an interface coupled with said processor and operative to receive a power supply; and wherein said processor is operative to compensate a calibration setting of said IED to account for variations in said conversion of said first and second analog signals to said first and second digital signals, wherein said variations are due to a frequency and amplitude of said first and second analog signals.