An arc extinguishing device for a circuit breaker

A technology of arc extinguishing device and circuit breaker, which is applied to circuit breaker parts, circuits, electrical components, etc., which can solve the problems of low current limiting capacity, high temperature arc and easy ablation of the shell, etc., to improve current limiting capacity and improve medium Effects of increased recovery strength and arc resistance

Active Publication Date: 2016-04-13
DELIXI ELECTRIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Therefore, the technical problem to be solved by the present invention is that the current limiting capacity of the existing circuit breaker arc extinguishing device is low, and the high-temperature arc generated is easy to ablate the shell, and a circuit breaker with strong current limiting capacity and capable of cooling the high-temperature arc is provided. arc extinguishing device

Method used

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  • An arc extinguishing device for a circuit breaker
  • An arc extinguishing device for a circuit breaker
  • An arc extinguishing device for a circuit breaker

Examples

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Embodiment Construction

[0036] Such as figure 2 Shown is a preferred embodiment of the circuit breaker arc extinguishing device of the present invention.

[0037] The arc extinguishing device 1 includes several parallel arc extinguishing grids 2 stacked at a distance from each other and a fixing plate 3 for fixing the arc extinguishing grids 2, the fixing plate 3 is arranged on the arc extinguishing grid The two sides of the sheet 2 are perpendicular to the plane where the arc extinguishing grid sheet 2 is located, and the outer side of the fixed plate 3 is provided with an insulating splint 4, and the insulating splint 4 is located between the circuit breaker casing and the fixed plate 3, so The insulating splint 4 has a hexahedral structure, that is, a plate shape with a certain thickness. During installation, the insulating splint 4 can be fixed by cooperating with the fixing plate 3 or by cooperating with the circuit breaker housing.

[0038] The arc extinguishing grid piece 2 is a ferromagnet...

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PUM

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Abstract

The invention provides an arc-extinguishing device of a breaker. The arc-extinguishing device of the breaker comprises a plurality of arc-extinguishing grid sheets (2) and fixing boards (3), wherein the arc-extinguishing grid sheets (2) are stacked in parallel at certain intervals and the fixing boards (3) are arranged on the two sides of the arc-extinguishing grid sheets (2) and perpendicular to the plane where the arc-extinguishing grid sheets (2) are located. An insulation clamping board (4) is arranged on the outer side of each fixing board (3). According to the arc-extinguishing device, the current-limiting capacity of the breaker can be improved and a shell of the breaker is prevented from being influenced and burnt by a high-temperature arc.

Description

technical field [0001] The invention belongs to the technical field of low-voltage electrical appliances, and in particular relates to an arc extinguishing device of a circuit breaker. Background technique [0002] A circuit breaker refers to a device that can close the current infrequently in a normal circuit and has a certain overload and short-circuit protection capability. The short-circuit protection function of the circuit breaker is mainly to cut off the faulty circuit through the cooperation of the electromagnetic system, arc extinguishing device and its operating mechanism, so as to play the role of circuit protection. The short-circuit protection function of the circuit breaker has the characteristics of short-circuit breaking time, which can protect the load of the power transmission and distribution system from the damage of the short-circuit current. [0003] When the circuit breaker breaks the short-circuit current, the electromagnetic system is mainly used to...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01H73/18H01H9/34
Inventor 王晓
Owner DELIXI ELECTRIC
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