| 摘要 |
PURPOSE: A multiple compressive chamber type gas circuit breaker is provided to improve fault current interrupting performance by dividing a compressive chamber into two or more spaces and rising pressure more than two times with same operating force. CONSTITUTION: A first compressive chamber(54a) is located in the inside bordering a cylinder rod(13). A second compressive chamber(54b) is located on the outside bordering the inner wall of an operation housing(12). The first compressive chamber and the second compressive chamber are separated from each other. A division wall(53) is extended from a separation wall(50) in a piston(55) direction. A check valve(52) and a reducing valve(56) are installed in each compressive chamber(54). [Reference numerals] (AA) Arc area
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