ELECTRIC POWER GAS INSULATION APPARATUS, AND FILLING OR EXHAUSTING METHOD OF INSULATION GAS FOR THE SAME

摘要

PROBLEM TO BE SOLVED: To provide a compact electric power gas insulation apparatus in which differential pressure does not become too large during filling or exhaustion of insulation gas when performing maintenance of the electric power gas insulation apparatus.

SOLUTION: An electric power gas insulation apparatus 1 houses a high voltage part and packs insulation gas 7 in a closed vessel 2. When the closed vessel 2 is separated into a plurality of gas compartments by insulation spacers 14, gas piping 182and 183branched from a shared supply/discharge passage 18 is connected with the adjacent gas compartments 302and 303respectively. A differential pressure detector 21 is disposed in which it is activated if differential pressure between the branched gas piping 182and 183is more than a predetermined reference value. A selector valve 20 is disposed in which the selector valve opens or closes circuit of the gas piping according to a command of the differential pressure detector 21.

COPYRIGHT: (C)2013,JPO&INPIT