| 摘要 |
PROBLEM TO BE SOLVED: To moderate thermal stress of an insulating layer formed between a vacuum insulating container and an electric field moderating shield. SOLUTION: A molded vacuum valve includes: a sealing fitting 2 of the stationary side and sa ealing fitting 3 of the movable side sealed to both end opening parts of the vacuum insulating container 1; a pair of contacts 5, 6 on the stationary side and the movable side installed in the vacuum insulating container 1 in free contact and separation; an electric field moderating shield 20 of the stationary side installed so as to cover the outer peripheral end part of the sealing fitting 2 of the stationary side; an electric field moderating shield 21 of the movable side installed so as to cover the outer peripheral end part of the sealing fitting 3 of the movable side; and the insulating layer 12 formed in the outer peripheries of these shields by molding an insulating material. The electric field moderating shields 20, 21 are constituted of stationary parts 20a, 21a widened in the radial direction and tip parts 20b, 21b extended in the axial direction, respectively, and the inner peripheral faces of the tip parts 20b, 21b are made wider in the radial direction toward the tips. COPYRIGHT: (C)2011,JPO&INPIT
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