Patent ID: 7123032

Claim:
A device to measure the voltage difference between two conductors, comprised of: a plurality of series-connected electrical impedance elements distributed in one or more high voltage impedance strings with one end of each string connected to a first conductor and the other end of each string connected to a second conductor; where the impedance element at one or both ends of one or more of the series-connected high voltage impedance element string or strings designated as the low voltage impedance element across which a voltage signal is measured; where the impedance string or strings are formed into one or more intertwined spirals extending between the two conductors such that each spiral-formed impedance string provides dielectric shielding for the other spiral-formed impedance strings; where each impedance element is comprised of at least one capacitor and one resistor connected in series; and where one or more electronic circuits amplify the signals across one or more of the low voltage impedance elements and provide corrections for one or more of the ratios between the measured voltage difference and one or more of the output signals.