Three-position auxiliary switch
An auxiliary switch, three-station technology, applied in the direction of electrical switches, electrical components, circuits, etc., can solve problems such as increasing design complexity and increasing equipment costs, and achieves the effect of simplifying design and application and reducing manufacturing costs.
Active Publication Date: 2016-03-30
北京交通大学长三角研究院
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Problems solved by technology
Not only increases the cost of equipment, but also increases the complexity of design and installation
Method used
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[0013] like figure 1 As shown in -3, the three-position auxiliary switch includes an insulating bracket 1 with a cylindrical inner cavity, and a rotating shaft 2 is arranged in the center of the inner cavity of the insulating bracket. One moving contact piece a and the second moving contact piece b, the angular position difference between the first moving contact piece a and the second moving contact piece b is 45°, and the first moving contact piece a and the second moving contact piece b are in the axial direction There is an installation interval on it; in the rotation stroke of the rotating shaft 2, there are three stations whose angular positions are sequentially different by 45°, which are respectively -45° station, 0° station and 45° station; on the insulating support 1 On the inner wall, a first pair of static contacts a1 and a3 and a second pair of static contacts a2 and a4 with an angular position difference of 90° are provided at a position corresponding to the axia...
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The invention relates to a three-station auxiliary switch used for detecting the working position of switchgear. The three-station auxiliary switch comprises an insulating support, wherein a rotating shaft is arranged at the center of an inner cavity of the insulating support, a first movable contact wafer and a second movable contact wafer are installed on the rotating shaft, the angular position of the first movable contact wafer differs from that of the second movable contact wafer by 45 degrees, and an installation gap is formed between the first movable contact wafer and the second movable contact wafer in the axial direction. The rotation distance of the rotating shaft comprises a 45-degree station, a 0-degree station and another 45-degree station. A first static wafer pair and a second static contact wafer pair are arranged at the position, corresponding to the axial position the first movable contact wafer, of the inner wall of the insulating support, wherein the angular position of the first static wafer pair differs from that of the second static contact wafer pair by 90 degrees. A third static contact wafer pair is arranged at the position, corresponding to the axial position the second movable contact wafer, of the inner wall of the insulating support. The three-station auxiliary switch can replace three distance microswitches, is used for working position indication for a three-station distribution switch operating mechanism, and not only lowers manufacturing cost but also simplifies the design and application of the three-station distribution switch operating mechanism.
Description
technical field [0001] The invention relates to a component structure of a switchgear operating mechanism in a power system, in particular to a three-position auxiliary switch for detecting the working position of the switchgear. Background technique [0002] In the distribution switchgear, the distribution switch with three working positions of closing, opening (or isolation), and grounding (referred to as three-position distribution switchgear) is widely used due to its simplicity and reliability. Therefore, it is necessary to install an auxiliary switch on the operating mechanism of the three-station power distribution switchgear, so that the auxiliary switch moves together with the operating mechanism, so that the working position of the three-station power distribution switch can be judged from the moving position of the auxiliary switch. Therefore, it is required that the auxiliary switch also has three working positions. And in this technical field at present, often ...
Claims
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IPC IPC(8): H01H9/16
Inventor 文化宾张明志王毅邹积岩廖敏夫段雄英
Owner 北京交通大学长三角研究院