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A dual power supply automatic transfer switch arc extinguishing cover with protective parts

A technology for automatic transfer switches and protective parts, applied in the direction of electric switches, circuits, electrical components, etc., can solve the problem of easy burnout of arc extinguishing plates, achieve the effect of increasing arc entry speed and reducing damage

Active Publication Date: 2017-09-26
BEIJING MINGRI ELECTRICAL EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the disadvantages of the arc inlet and arc extinguishing sheet of the traditional dual power automatic transfer switch arc extinguishing cover that are easy to burn out, and disclose an arc extinguishing cover for a dual power supply automatic transfer switch that can protect the arc extinguishing chamber and the arc extinguishing sheet

Method used

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  • A dual power supply automatic transfer switch arc extinguishing cover with protective parts
  • A dual power supply automatic transfer switch arc extinguishing cover with protective parts
  • A dual power supply automatic transfer switch arc extinguishing cover with protective parts

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Embodiment Construction

[0013] combine Figure 1 ~ Figure 3B , the present invention will be further described through specific examples.

[0014] An arc extinguishing cover with dual power supply automatic transfer switch with protective parts, including a mounting frame 4, the mounting frame 4 is set in an N shape, the left and right sides are vertical outer walls 402, and the middle is connected by an inclined wall 401. The left arc extinguishing chamber 3 is arranged on the left side of the inclined wall 401, and the right arc extinguishing chamber 6 is arranged on the right of the inclined wall 401, and arc extinguishing sheets are arranged in the left and right arc extinguishing chambers, and in the left A left protective part 2 is arranged at the arc inlet of the arc extinguishing chamber, and a right protective part 5 is arranged at the arc inlet of the right arc extinguishing chamber.

[0015] It is further provided that the left protective part 2 and the right protective part 5 are integra...

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Abstract

The invention discloses an arc extinguishing cover with protective parts for a dual-power supply automatic change-over switch. The arc extinguishing cover comprises a mounting frame, wherein the mounting frame is set into an N shape; the left side and the right side are vertical outer walls; the middle is connected with an inclined wall; arc extinguishing chambers are respectively arranged at two sides of the inclined wall; arc extinguishing plates are arranged in the arc extinguishing chambers; and the protective parts are arranged at arc inlets of the arc extinguishing plates. On one hand, the protective parts can effectively protect the arc inlets of the arc extinguishing chambers and the arc extinguishing plates at the arc inlets and reduce the damages to the arc inlets of the arc extinguishing chambers and the arc extinguishing plates at the arc inlets at high-temperature arc inlets; and on the other hand, the protective parts can generate hydrogen at arc-spraying high temperature; meanwhile, inner edges of the protective parts are set into an isosceles trapezoid with large arc inlets and large arc outlets; and the arc inlet speeds of the arc inlets of the arc extinguishing chambers are increased, so that arc extinguishing of the arc extinguishing cover is facilitated.

Description

technical field [0001] The invention relates to an arc extinguishing cover for a low-voltage electrical switch, in particular to an arc extinguishing cover for a double power supply automatic transfer switch with protective parts. Background technique [0002] Dual power automatic transfer switch is a commonly used low-voltage electrical appliance. It is often used to switch between two power sources to ensure that when one power source fails or stops supplying power, the other power source can be quickly switched to ensure the normal power supply of the load circuit. The conversion executive element of the PC-level dual power automatic transfer switch is generally a transfer switch. An arc extinguishing cover is arranged between the dynamic and static contacts of the normal power supply and the backup power supply. The arc extinguishing cover of the traditional dual power automatic transfer switch The arc generated during breaking is directly sprayed on the arc inlet of the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01H9/34
CPCH01H9/346H01H2009/348
Inventor 冷岩张文杰
Owner BEIJING MINGRI ELECTRICAL EQUIP
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