Static contact and high voltage switch
A technology of static contacts and moving contacts, which is applied in high-voltage/high-current switches, electric switches, high-voltage air circuit breakers, etc., can solve the problem of uneven electric field of static contacts, achieve the effect of electric field balance and avoid short circuit
Active Publication Date: 2022-06-07
PINGGAO GRP +2
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Problems solved by technology
[0004] The purpose of the present invention is to provide a static contact to solve the problem of uneven electric field inside the static contact in the prior art, and also provide a high-voltage switch to solve the uneven electric field inside the static contact of the high-voltage switch in the prior art The problem
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Embodiment Construction
[0047] The specific embodiments of the high-voltage switch of the present invention will be further described below with reference to the accompanying drawings.
[0048] like figure 1 As shown, the high-voltage switch of the present invention is described by taking the three-phase gas-insulated metal-enclosed combined switchgear as an example. Of course, the high-voltage switch of the present invention is not limited to the switch illustrated in this embodiment. Can be a DC high voltage switch.
[0049] The three-phase gas-insulated metal-enclosed combined switchgear of this embodiment is as follows: figure 1 As shown, it includes a casing 23 and an isolating grounding switch 24 assembled in the casing 23. The casing is filled with mixed gas as a medium for insulation and arc extinguishing. The casing of the high-voltage switch is connected with an insulator 22. The high-voltage switch includes a moving contact 20. and a static contact 21 adapted to the moving contact 20, wh...
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The invention provides a static contact and a high-voltage switch. The static contact includes: a static contact seat, a conductive contact finger, an arc-starting shield, and an arc-extinguishing coil. The arc shielding cover includes a cylindrical base body and a radially inwardly extending flange arranged at the front end of the cylindrical base body. The flange covers the front end of the conductive contact fingers. The perforation for the moving contact rod to pass through; the arc strike shield is relatively fixed to the static contact seat, and also includes the arc suppression coil, one end of the arc suppression coil is electrically connected to the arc strike shield, and the other end is electrically connected to the static contact seat ; The arc starting shield covers the static contact seat, conductive contact finger and arc suppression coil in the static contact, so that the internal electric field is more balanced, and the tip discharge phenomenon of the static contact is avoided.
Description
technical field [0001] The invention belongs to the technical field of high-voltage electrical equipment and devices, and particularly relates to a static contact and a high-voltage switch. Background technique [0002] With the continuous development of the power industry, sulfur hexafluoride gas-insulated fully enclosed power distribution devices (GIS for short) have been widely used in the field of electric power as an important electrical equipment. As an important part of GIS, the performance of high-voltage switches GIS has an important impact. [0003] Since high-voltage switches often carry large voltages and currents, arcing tends to occur during the opening and closing process at the fracture position. There are many arc suppression structures. For example, the Chinese invention patent application with publication number CN106960755A discloses a contact system and a single-pole arc extinguishing chamber and load switch using the contact system, wherein the contac...
Claims
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IPC IPC(8): H01H1/64H01H33/02H01H33/04H01H33/18H01H33/24
CPCH01H1/64H01H33/02H01H33/04H01H33/18H01H33/24
Inventor 白玮贺永明魏建巍王刚刘龙魏义涛齐小虎张琳琳高博远张永强谢世超李忠富许胜杰贾彩玲
Owner PINGGAO GRP