Patent ID: 6661234
Filing Date: 2003-12-09
Classification: G01R,H02B

Abstract:
A failure determining apparatus of a gas-insulated electrical appliance determining a failure, having a cylindrical metal container, a charged conductor housed in said metal container filled with an insulating gas, and a plurality of insulating spacers insulation-supporting said charged conductor from said metal container and partitioning the interior of said metal container into gas sections, comprising:a high-speed developing sensor which detects a high-speed phenomenon caused by a failure within said gas sections; a first failure determining circuit which determines the presence of said failure from an output of said high-speed developing sensor; a low-speed developing sensor which detects a low-speed phenomenon caused by said failure within said gas sections; a second failure determining circuit which determines the presence of said failure from an output of said low-speed developing sensor; and an arithmetic control circuit that identifies a failure gas section of said metal container in which said failure occurs from an output of said first failure determining circuit and said second failure determining circuit.