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Arc-extinguishing unit structure for direct current air circuit breaker

A technology of air circuit breaker and structure, applied in the direction of circuit breaker parts, air switch parts, circuits, etc., can solve the problems of arc extinguishing part and energizing part structure and electrical damage, arc stagnation, product performance degradation, etc., to achieve Effects of shortening arc duration, preventing arc backflow, and ensuring small current breaking performance

Pending Publication Date: 2021-11-19
LS ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Also, arc stagnation occurs between the fixed and movable contacts
[0007] In addition, the high-temperature arc stagnation phenomenon will cause serious damage to the structure and electricity of the arc extinguishing part and the energizing part, and cause the performance degradation of the product and the accident of the equipment

Method used

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  • Arc-extinguishing unit structure for direct current air circuit breaker
  • Arc-extinguishing unit structure for direct current air circuit breaker
  • Arc-extinguishing unit structure for direct current air circuit breaker

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0041] figure 1 is a configuration diagram schematically showing an arc extinguishing portion structural body for a DC air circuit breaker according to a first embodiment of the present invention, figure 2 is schematically shown figure 1 The construction diagram of the arc guide in the arc chute structure shown, image 3 is schematically shown figure 1 Structural diagram of the magnets in the arc chute structure shown.

[0042] The arc extinguishing unit structure 1000 is used to ensure small current breaking performance in DC air circuit breakers used in various equipment requiring DC breaking, including solar power generation facilities.

[0043] As shown in the figure, the arc chute structure 1000 includes side plates 1100 , grid members 1200 , exhaust hoods 1300 , arc guides 1400 , and magnets 1500 .

[0044]More specifically, the grid member 1200 is a cooling plate for dividing and cooling an incoming arc, and a plurality of grid members 1200 are stacked in a state o...

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PUM

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Abstract

An arc-extinguishing unit structure for a direct current air circuit breaker according to one embodiment of the present invention comprises: a plurality of grids; side plates coupled to both sides of the plurality of grids so that the plurality of the grids are mounted so as to be spaced apart from each other; an exhaust cover positioned above the side plates and the plurality of grids; an arc guide coupled to the side plates so as to be located under the plurality of grids; a magnet coupled to the arc guide, wherein the magnet is magnetized with different poles on the basis of the plurality of grids and the vertical orientation of the arc guide.

Description

technical field [0001] The invention relates to an arc extinguishing structure used for a DC air circuit breaker. Background technique [0002] Usually, an air circuit breaker (Air Circuit Breaker: ACB) is an electrical appliance installed on a low-voltage distribution line and uses air as an arc-extinguishing medium. And stop, etc., and when abnormal currents such as overcurrent, short circuit, and ground fault occur, the life of personnel and load equipment are protected by breaking the circuit. [0003] More specifically, the DC air circuit breaker according to the prior art includes an arc extinguishing part and an energizing part inside the circuit breaker. Also, when an abnormal current occurs due to overcurrent, short circuit, or ground fault, etc., the mechanical part of the product is operated by a relay to separate the fixed contact from the movable contact. [0004] In addition, an arc is generated simultaneously with the separation of the fixed and movable cont...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H73/18H01H31/02
CPCH01H9/443H01H9/30H01H9/362H01H73/18H01H31/02H01H33/182H01H33/53
Inventor 金一显
Owner LS ELECTRIC CO LTD