Universal circuit breaker moving contact system
A technology of moving contacts and circuit breakers, which is applied in the direction of circuit breaker contacts and circuit breaker parts, etc., can solve the problems of difficulty in improving breaking capacity and low arc voltage, achieve high arc voltage, simplify structure, and facilitate installation and disassembly Effect
Active Publication Date: 2011-03-16
ZHEJIANG ELECTRIC APPLIANCE & SWITCHGEAR +2
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Problems solved by technology
[0003] In order to overcome the disadvantages of low arc voltage and difficulty in improving the breaking capacity of existing universal circuit breaker contacts, the present invention provides a universal circuit breaker moving contact system, the universal circuit breaker moving contact The contact of the system adopts a double breakpoint structure, which increases the arc voltage during breaking, thereby improving the breaking capacity, and the circuit breaker is modularized and combined, and it is easy to install and disassemble.
Method used
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[0014] The present invention will be further described below in conjunction with accompanying drawing:
[0015] Depend on figure 1 combine figure 2 , image 3 As shown, the moving contact system of the universal circuit breaker includes a moving contact support 1 and a moving contact 2. The moving contact 2 is stacked on at least two positioning shafts 4 by a plurality of contact pieces 3 parallel to each other. There are two contact points 5 on each piece 3, the moving contact 2 is connected with the moving contact support 1 through the guide shaft splint 6 on both sides, and the guide shaft splint 6 is provided with a waist-shaped hole 7 corresponding to the positioning shaft 4 , the two ends of the positioning shaft 4 are located in the waist-shaped hole 7 and can slide to ensure the overtravel of the moving contact 2 when the circuit breaker is closed. Spacers 9, each contact piece 3 is between the spacers 9, and a spring 10 is arranged between each contact piece 3 and...
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The invention discloses a universal circuit breaker moving contact system, which mainly solves the problems that the contact of the conventional circuit breaker has lower arc voltage during break and the breaking capacity is difficultly improved. The universal circuit breaker moving contact system is characterized in that: a moving contact (2) is connected with a moving contact support (1) through guide shaft clamping plates (6) on two sides; waist-shaped holes (7) corresponding to a positioning shaft (4) are formed on the guide shaft clamping plates (6); two ends of the positioning shaft (4) are positioned in the waist-shaped holes (7) and can slide; spacers (9) matched with contact plates (3) on the moving contact (2) are arranged on the moving contact support (1); each contact plate (3) is positioned between the spacers (9); and a spring (10) is respectively arranged between each contact plate (3) and the moving contact support (1). The contact of the universal circuit breaker moving contact system has a dual-break structure, and the arc voltage is improved during the break. Therefore, the breaking capacity is improved, simultaneously the modular and combined circuit breaker is convenient to assemble and disassemble.
Description
technical field [0001] The invention relates to a universal circuit breaker, in particular to a moving contact system of the universal circuit breaker. Background technique [0002] Universal circuit breakers are used to distribute electric energy and protect circuits and power supply equipment from overload, undervoltage, short circuit, etc. Under normal conditions, they can be used for infrequent switching of circuits. The main technical performance that determines the performance of a universal circuit breaker is the rated ultimate short-circuit breaking capacity Icu, the rated operating short-circuit breaking capacity Ics and the rated short-circuit withstand current Icw. Therefore, it is very necessary to adopt various technologies to improve the main technical performance, no matter in terms of improving the technical level of low-voltage electrical appliances or improving the market effectiveness of low-voltage electrical appliance manufacturing enterprises. The movi...
Claims
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IPC IPC(8): H01H73/04
Inventor 胡庭东黄国光
Owner ZHEJIANG ELECTRIC APPLIANCE & SWITCHGEAR