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Alternate current circuit breaker

A technology of AC circuit breaker and casing, which is applied to high-voltage air circuit breakers, circuits, and high-voltage/high-current switches, etc., can solve the problem that the arc extinguishing effect is not very good, and achieve the effect of good arc extinguishing effect and increased distance.

Pending Publication Date: 2019-07-30
GUIZHOU POWER GRID CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when this kind of circuit breaker encounters ultra-high voltage, the arc extinguishing effect is not very good because of the high voltage.

Method used

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  • Alternate current circuit breaker
  • Alternate current circuit breaker
  • Alternate current circuit breaker

Examples

Experimental program
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Effect test

Embodiment Construction

[0031] Below in conjunction with accompanying drawing and specific embodiment the invention is further introduced:

[0032] refer to Figure 1 to Figure 5 , an AC circuit breaker comprising:

[0033] Static contact 1, moving contact 2, arc chute 3 and casing 4;

[0034] The static contact 1 is fixedly installed in the lower part of the housing 4, and the moving contact 2 is movable up and down in the housing 4 directly above the static contact 1;

[0035] The middle part of the arc extinguishing grid 3 is provided with a moving contact installation hole 3011, and the diameter of the moving contact installing hole 3011 is larger than the diameter of the moving contact 2. The arc extinguishing grid 3 is fixedly installed on the upper part of the static contact 1 through the shell 4 and makes the moving contact The mounting hole 3011 is located directly above the static contact 1, and the moving contact 2 is installed in the moving contact mounting hole 3011;

[0036] The arc ...

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Abstract

The present invention provides an alternate current circuit breaker. The alternate current circuit breaker comprises a static contact, a moving contact, an arc chute and a shell; the static contact isfixedly installed at the lower portion of the shell, the moving contact is movably installed above the static contact in the shell up and down; the middle portion of the arc chute is provided with amoving contact mounting hole, the diameter of the moving contact mounting hole is larger than that of the moving contact, the arc chute is fixedly installed at the upper portion of the static contactthrough the shell and allow the moving contact mounting hole to be located above the static contact, and the moving contact is installed in the moving contact mounting hole; the arc chute comprises more than two mutually parallel grid sheets, each grid sheet comprises a left grid sheet and a right grid sheet, and gaps are reserved between the left grid sheets and the right grid sheets; the left grid sheets and the right grid sheets are permanent magnets; and the opposite surface magnetic poles of the left grid sheets and the right grid sheets are opposite in polarity. The alternate current circuit breaker solves the problem that when an existing circuit breaker meets extra-high voltage electricity, the arc extinguishing effect is not good due to the high voltage.

Description

technical field [0001] The invention relates to the field of electric tools, in particular to an AC circuit breaker. Background technique [0002] Existing AC circuit breakers usually include static contacts, moving contacts, arc extinguishing grids and casings; the static contacts are fixedly installed at the lower part of the casing, and the moving contacts are installed directly above the static contacts through the casing moving up and down; the There is a moving contact mounting hole in the middle of the arc extinguishing grid. The diameter of the moving contact mounting hole is larger than the moving contact diameter. The arc extinguishing grid is fixed on the upper part of the static contact through the shell and the moving contact mounting hole is located directly above the static contact. The moving contact is installed in the installation hole of the moving contact; the arc extinguishing grid includes more than two grid pieces parallel to each other. [0003] The ...

Claims

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Application Information

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IPC IPC(8): H01H33/08H01H33/18
CPCH01H33/08H01H33/182
Inventor 王金钉王德贺许玉梅何湘宁龚涛吴冕之
Owner GUIZHOU POWER GRID CO LTD
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