| 摘要 |
<p>A nozzle (202; 302; 402) for a medium and/or high voltage breaker, the breaker comprising at least two arcing contact members (102, 104) movable in relation to one another to at least one closed position where the arcing contact members are electrically connected to one another, and to at least one open position where the arcing contact members (102, 104) are disconnected and form an electrically insulating gap (106) between them, the nozzle being made partially of an electrically insulating material (204; 304; 404) and being adapted to guide electrically insulating gas to the insulating gap (106), for preventing arcing between the arcing contact members when separating or connecting them, the nozzle comprises a nozzle portion (206; 306; 406) adapted to be positioned in the region of the electrically insulating gap, and the nozzle comprises a first electrically conductive body (208; 308; 408) which is entirely surrounded by the insulating material and electrically insulated from the arcing contact members. The nozzle comprises at least one second electrically conductive body (210; 310, 312; 410, 412, 414) which is at least partially surrounded by the insulating material and electrically insulated from the arcing contact members, the at least one second electrically conductive body is spaced from the first electrically conductive body, the conductive bodies are adapted to form a capacitive coupling between them, for electric field control in the insulating gap, and at least one of the conductive bodies is insulated from earth. A breaker comprising the nozzle.</p> |
