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Earthing switch device

A grounding switch and chassis technology, which is applied in the field of indoor high-voltage AC grounding switches, can solve the problems of weakening the uniformity of electric field, tip discharge, uneven electric field, etc., and achieve the effect of enhancing insulation ability, withstand voltage effect and uniform electric field

Active Publication Date: 2013-06-05
EATON ELECTRICAL EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, some existing indoor high-voltage AC grounding switchgears have uneven electric field, which leads to tip discharge phenomenon, especially because the end of the arm member facing the static contact has a tip structure in the open state.
Moreover, in the existing grounding switchgear, if the bottom frame has a thin-walled structure, it is also easy to cause the tip electric field of the static contact against the thin-walled structure when the switch is opened, thereby weakening the uniformity of the electric field

Method used

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Examples

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Embodiment Construction

[0025] Exemplary embodiments of the present invention will now be described in detail with reference to the following description and accompanying drawings. The drawings in this application are not completely drawn according to the actual size of the specific embodiment, and any change in size should not be construed as limiting the present invention.

[0026] The specific size range mentioned in this specification is only an exemplary range for the commonly used grounding switch devices in the prior art, but it does not constitute a limit to the scope of protection of the present invention. According to specific applications and needs, one of these numerical ranges can be used outside dimensions.

[0027] figure 1 shows a perspective view of an exemplary embodiment of the earthing switchgear according to the present invention, where the moving contact 3 and the stationary contact 2 are as figure 1 Shown in closed state. For clarity, in figure 1 The structure for fixedly i...

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Abstract

The invention provides an earthing switch device which can be switched between a separating brake state and an on-position state. The earthing switch device comprises an underframe (1), at least one pair of fixed contacts (2), at least one pair of movable contacts (3), a main shaft (4), a connecting lever part (7) and a shield part (6), and the main shaft (4) is arranged on the underframe (1) in a rotating mode. The connecting lever part (7) is used for fixed installation of the movable contacts (3) on the main shaft (4). The shape and / or arrangement of the shield part (6) allows the earthing switch device to shield the connecting lever part (7) under the separating brake state, opposite to the static contacts (2). The earthing switch device can at least eliminate top electric field between the fixed contacts (2) and the connecting lever part (7), and improves evenness of electric field of the earthing switch device.

Description

technical field [0001] The invention relates to the field of indoor high-voltage AC grounding switches, in particular to a grounding switch device with a more uniform electric field. Background technique [0002] The power distribution cabinet is a device used to connect, disconnect and protect the power supply line and cooperate with the relay protection to cut off the faulty line. The power distribution cabinet is usually equipped with a grounding switch. When the power supply line or equipment fails and during normal maintenance, the grounding switch must be closed to ensure personal safety. In power supply lines, it is considered safe only after the earthing switch is closed. [0003] In the prior art, although the known earthing switches are capable of correctly performing the required functions, there are still shortcomings and areas for improvement. In fact in many cases they have a structure which is not suitable for ensuring an optimum function of the earthing swi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H31/00H01H1/64
Inventor 王世峰王腊洪
Owner EATON ELECTRICAL EQUIP CO LTD
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