CABLE STRUCTURE AND VACUUM DEGREE MEASUREMENT SYSTEM FOR VACUUM CIRCUIT BREAKER

PROBLEM TO BE SOLVED: To provide a cable structure which makes it possible to wind the same as a magnetic field cable for generating a magnetic field around a vacuum circuit breaker, even at a narrow position around the vacuum circuit breaker that is integrated in a solid insulation opening/closing device.SOLUTION: Multiple single-wire cables 12 are wound around a vacuum circuit breaker of a solid insulation switch, and configured to generate a magnetic field for measuring a vacuum degree of the vacuum circuit breaker. Thin connectors 13 of such tolerance that a current required for generating the magnetic field capable of measuring the vacuum degree of the vacuum circuit breaker can flow are connected to both ends of the single-wire cables with such a width as to be passed through a narrow part around the vacuum circuit breaker when winding the multiple single-wire cables 12 around the vacuum circuit breaker. A protector 14 is accommodated while enclosing the multiple single-wire cables 12 between the thin connectors 13 so that arrangement positions of the internal multiple single-wire cables 12 vary with pressure from the outside.SELECTED DRAWING: Figure 1 【課題】固体絶縁開閉装置に組み込まれた真空遮断器の周囲の狭隘箇所であっても真空遮断器の周囲に磁界を発生させるための磁界ケーブルとして巻き付けが可能とすることである。【解決手段】 固体絶縁開閉器の真空遮断器の周囲に巻回して真空遮断器の真空度を測定するための磁界を発生させる複数の単線ケーブル１２の両端部に、真空遮断器の周囲に複数の単線ケーブル１２を巻回する際に真空遮断器の周囲の狭隘部を通すことができる幅であり真空遮断器の真空度の測定可能な磁界を発生させるに必要な電流を流せる耐量の薄型コネクタ１３を接続し、防護材１４は、薄型コネクタ１３間の複数の単線ケーブル１２を包囲し外部からの圧力で内部の複数の単線ケーブル１２の配置位置を可変にできるように収納する。【選択図】 図１