Shielding contact box of high-voltage switch cabinet

A technology of high-voltage switchgear and contact box, applied in the field of contact box, to achieve the effect of reducing partial discharge, eliminating corona phenomenon, and superior electrical performance

Active Publication Date: 2010-01-20
浙江省开化七一电力器材有限责任公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In order to overcome the above-mentioned problems existing in the prior art, the present invention aims to provide a shielded contact box for high-voltage switchgear with a new structure. The contact box is not ea

Method used

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  • Shielding contact box of high-voltage switch cabinet

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Embodiment Construction

[0012] see figure 1 . The box body 1 and the support plate 2 are integrally formed by epoxy pressure gel at one time, and the outer walls of both are provided with umbrella skirts 11 , and the outer edges of the adjacent contact box support plates 2 form overlapping surfaces. The box body 1 is cylindrical, with an open upper end and a lower end closed by the bottom wall 12 of the inner cavity of the box. Corresponding to the bottom wall 12 of the inner cavity of the box body, a radial female discharge port 4 is provided on the wall of the box body 1 for receiving the busbar. On the bottom wall 12 of the inner cavity of the box, a static contact mounting insert 5 and a busbar fixing insert 6 are arranged respectively, and the axes of the screw holes of the two are on a straight line, so as to fix the busbar in a straight line. The non-magnetic metal shielding layer 7, that is, the wire mesh layer or the metal sheet layer, together with the static contact mounting insert 5 and...

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Abstract

The invention relates to a shielding contact box of a high-voltage switch cabinet, comprising a box body and a support plate, wherein the box body is formed in one step from mixed epoxy materials and in a cylinder shape, one end of the box body is provided with an opening, and the other end of the box body is closed; the outer wall of the box body and the support plate are both provided with umbrella skirts; and the inner cavity wall of the box body is provided with a nonmagnetic metal shielding layer, a static contact installing insert and a bus fixing insert which form an integral piece. The shielding contact box uses the nonmagnetic metal shielding layer to replace a net ring and especially embeds the nonmagnetic metal shielding layer into the bottom wall of the inner cavity of the box body so that the nonmagnetic metal shielding layer directly forms the integral piece with the static contact installing insert and the bus fixing insert, thereby not only uniformizing an electric field, reducing the partial insulator discharge, but also facilitating the elimination of corona by changing electric charge distribution direction and expanding phase spacing, so that the insulator can move in a better environment, thereby ensuring the safe operation of electric power.

Description

【Technical field】 [0001] The invention belongs to a shielded contact box for a high-voltage switchgear, in particular to a contact box with a shielding mesh ring on the inner wall. 【Background technique】 [0002] The contact box is set in the high-voltage switch cabinet and is a transitional component connecting the circuit breaker and the static contact. Its structure includes a box body and a support plate, the box body is cylindrical, one end is open and the other end is closed. The outer wall of the cylindrical box is provided with an umbrella skirt, and the bottom of the closed inner cavity is provided with a static contact installation insert. For the installation of the static contact, a radial outlet is opened on the box body wall, through which the branch busbar form the main circuit. The support plate and the box body are integral cylindrical insulators formed by epoxy mixture at one time, and the outer surface of the support plate is also provided with a corresp...

Claims

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Application Information

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IPC IPC(8): H02B1/14H02B11/04H02B11/24
Inventor 余永松
Owner 浙江省开化七一电力器材有限责任公司
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