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Integrated grounding switch

An earthing switch, integrated technology, applied in the field of integrated earthing switch, can solve problems such as insulation failure, achieve the effect of ensuring insulation performance and simple structure

Inactive Publication Date: 2013-05-29
XUCHANG YONGXIN ELECTRIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is a danger of insulation failure due to air leakage in the vacuum interrupter due to the small fracture distance

Method used

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  • Integrated grounding switch

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Embodiment Construction

[0013] Such as figure 1 As shown, an integrated grounding switch includes an air-insulated switch and a vacuum break switch connected in series, the vacuum break switch is a vacuum interrupter 2 with short-circuit making capability, and the vacuum interrupter 2 A return spring 3 is arranged between the end of the movable contact 22 and the housing of the vacuum interrupter, and the air insulated switch includes a sliding contact 5 and a switch provided at one end of the sliding contact 5 to provide power for the action of the sliding contact 5 The power device 8, the static contact 21 of the vacuum interrupter 2 is connected with the sliding contact 5. The sliding contact 5 is connected to the ground wire 9 , and may also be connected to the high voltage cable 1 . When the sliding contact 5 is connected to the high-voltage cable 1, the connection relationship and action principle of the entire device remain unchanged, and the sliding contact 5 can be connected to the ground w...

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PUM

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Abstract

The invention discloses an integrated grounding switch. The integrated grounding switch comprises an air insulation switch and a vacuum breakage switch connected in series with the air insulation switch, wherein the air insulation switch comprises a sliding contact and a power device for providing motive power for the action of the sliding contact; the vacuum breakage switch is a vacuum arc-extinguishing chamber with a short-circuit switching-on and switching-off capability; and a movable contact of the vacuum arc-extinguishing chamber is arranged on a movement track of the sliding contact. The integrated grounding switch is simple in structure, switches off the grounding current by utilizing the vacuum breakage when the integrated grounding switch is switched off and guarantees insulation performances by utilizing the air breakage when the integrated grounding switch is switched on through the integrated grounding switch structure which connects the air insulation fracture with the vacuum breakage in series for working, and enables the integrated grounding switch to be used more safely.

Description

technical field [0001] The invention relates to the field of grounding switches in high-voltage transmission and transformation grids, in particular to an integrated grounding switch with air-insulated fracture and vacuum short-circuit current closing capabilities. Background technique [0002] The power line distribution section is usually equipped with a high-voltage grounding switch for grounding protection. Grounding protection is especially important for the personal safety of maintenance and overhaul operators. Moreover, the large current generated when the grounding switch is closed has the characteristics of a small number of occurrences and the current decays with time. [0003] At present, the electric power operation management department requires that the conductive circuit of the grounding switchgear should have air-insulated fractures with obvious large spacing when the switch is turned on. [0004] Affected by the lower-level load, when the grounding switch ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H33/66
Inventor 羿庆海张哲
Owner XUCHANG YONGXIN ELECTRIC