Patent ID: 6853528

Claim:
A gas insulating apparatus comprising a sensor portion of a device for measuring at least either current flowing though a line from the power inlet to the power outlet or voltage of said line, and a bushing provided at least either at said power inlet or at said power outlet, wherein said sensor portion is mechanically and functionally combined with said bushing and disposed inside said bushing, and measurement of at least one of the current and the voltage and lead in or out of electric power are conducted in one bushing, and wherein said bushing comprises a porcelain tube which is an insulation tube, a current-carrying conductor arranged inside said porcelain tube, an electric field relaxation member disposed inside porcelain tube and arranged so as to face the outer-periphery side of said current-carrying conductor tube, and an electrode electrically connected to said current-carrying conductor for electrically connecting an external electric conductor outside said bushing.