Patent ID: 7633285

Claim:
A three-phase, insulated electrical device comprising: an enclosure having first, second and third conductors extending therethrough, each of said first, second and third conductors associated with a different electrical phase; one of an insulating gas and a vacuum within said enclosure; a first voltage sensor, disposed within said enclosure and positioned proximate to said first conductor for sensing a first voltage associated therewith; a second voltage sensor, disposed within said enclosure and positioned proximate to said second conductor for sensing a second voltage associated therewith; a third voltage sensor, disposed within said enclosure and positioned proximate to said third conductor for sensing a third voltage associated therewith; and a processor, connected to said first, second and third voltage sensors, for receiving outputs therefrom and determining voltages associated with said first, second and third conductors by compensating for contributions to said outputs from said first, second and third voltage sensors associated with those of said first, second and third conductors other than a conductor proximate thereto.