COIL ELECTRODE FOR VACUUM CIRCUIT-BREAKER AND VACUUM VALVE FOR VACUUM CIRCUIT-BREAKER

摘要

PROBLEM TO BE SOLVED: To provide a coil electrode capable of obtaining an uniform longitudinal magnetic field and a vacuum valve for vacuum circuit-breakers in which the coil electrode is used.;SOLUTION: A coil electrode 12 constituting a vacuum valve for vacuum circuit-breakers comprises mainly a ring 12a provided so as to be concentric on a plane orthogonal to the axis of the coil electrode, a plurality of arms 16a arranged at an equal interval along the perimeter of the ring 12a and extends to the outside, and a coil formed to be folded in one direction toward a position more inner than the maximum outer diameter end of another adjacent arms 16a, from the maximum outer diameter end that is furthest apart from the coil electrode 12 by way of the arms 16a.;COPYRIGHT: (C)2005,JPO&NCIPI