| 摘要 |
<p>A vacuum interrupter comprises a tubular bellows (30) including a first hollow bore (32); at least one sub- assembly(34), each sub-assembly (34) including an end cap (42), the or each end cap (42) including at least one second hollow bore and having a composition including glass or including glass-ceramic; at least one primary annular metallic element (36) being operably connected between the or each end cap (42) and one of respective ends of the tubular bellows (30); a pair of electrically conductive contact elements (38); and a pair of electrically conductive rods (40), each rod (40) being operably connected to a respective contact element (38) at a first end and being connected in use to an electrical network at a second end, a portion of at least one rod (40) being retained inside the or each second hollow bore of a respective end cap (42), wherein the or each end cap (42) and each rod (40) are operably connected to one of the respective ends of the tubular bellows (30) to define a vacuum-tight enclosure; the contact elements (38) are located inside the enclosure and arranged to define opposed contact surfaces; and the tubular bellows (30) is controllable to expand or contract to move one rod (40) relative to the other rod (40) to open or close a gap between the opposed contact surfaces.</p> |
