A circuit breaker contact structure
A circuit breaker and contact technology, which is applied in the directions of circuit breaker contacts, circuit breaker components, etc., can solve problems such as the inability to meet the needs of high breaking of circuit breakers, achieve accelerated transfer speed, improve arc extinguishing effect, and meet high breaking the desired effect
Active Publication Date: 2016-03-02
CHANGSHU SWITCHGEAR MFG CO LTD (FORMER CHANGSHU SWITCHGEAR PLANT)
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[0028] In order to enable the public to fully understand the technical essence and beneficial effects of the present invention, the applicant will describe in detail the specific implementation of the present invention below in conjunction with the accompanying drawings, but the applicant's description of the embodiments is not a limitation to the technical solution. Changes in the form of the inventive concept rather than in substance should be regarded as the protection scope of the present invention.
[0029] see image 3 and combine Figure 4 , this embodiment illustrates the application of a circuit breaker contact structure to a double-breakpoint universal circuit breaker. Since the double-breakpoint universal circuit breaker is a known technology, only a brief description is given here. The double breakpoint universal circuit breaker includes a housing 1 , a circuit breaker contact structure and an arc extinguishing chamber 4 . The housing 1 is composed of a base 11 a...
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The invention relates to a breaker contact structure and belongs to the technical field of electric switchgear. The breaker contact structure comprises two fixed contact components and a moving contact component. The moving contact component is matched with the upper and lower fixed contact components. Each fixed contact component comprises a fixed contact arm which is provided with a fixed contact point. The moving contact component comprises a moving contact. Two lengthwise ends of the moving contact are provided with moving contact points respectively. One pair of moving contact points is opposite to the two fixed contact points while the moving contact points and the fixed contact points are arranged face to face. The breaker contact structure is characterized in that the moving contact is provided with a bend, which projects to one side of the fixed contact components, between the paired moving contact points, so that a zigzag bent circuit is formed between the two fixed contact points. The breaker contact structure has the advantages that arc transition can be quickened when a breaker opens, arc extinguishing effect is improved, and the requirement of the breaker for high breaking is met.
Description
technical field [0001] The invention belongs to the technical field of electrical switches, and in particular relates to a circuit breaker contact structure, which is an improvement on the existing circuit breaker contact structure. Background technique [0002] Circuit breakers are the most important power distribution equipment in low-voltage power distribution systems. With the continuous improvement of power engineering requirements for power supply and power transmission and distribution equipment, the performance requirements for circuit protection switches are also getting higher and higher. The contact system is an important part of the circuit breaker. At present, the universal circuit breaker adopts two kinds of contact systems, one is fixed on the static contact, and the contact spring is installed on the moving contact; the other is installed on the static contact. Spring, and the static contact can make a small rotation around a certain axis, and the moving cont...
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IPC IPC(8): H01H73/04
Inventor 俞晓峰钱锦丰陈斌
Owner CHANGSHU SWITCHGEAR MFG CO LTD (FORMER CHANGSHU SWITCHGEAR PLANT)