A circuit breaker interlocking mechanism of a ring network cabinet
An interlocking mechanism and circuit breaker technology, which is applied to the operation/release mechanism of the protection switch, the circuit, the parts of the protection switch, etc. The effect of preventing accidental pulling and closing of the switch
Active Publication Date: 2017-09-12
常州阿斯博开关有限公司
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Problems solved by technology
[0002] At present, the program lock interlocking mechanism of the existing vacuum circuit breaker, the program lock is generally placed outside the circuit breaker case, the structure is complicated, the implementation method is complicated, and it is easy to be damaged, which affects the appearance of the circuit breaker. In addition, the existing program lock, such as China Invention patents 201420478086.4 and 88202900.2 disclosed in 201420478086.4 and 88202900.2 can play a certain role in preventing misoperation, but because it is too simple, it cannot completely avoid the risk of double circuit breakers closing at the same time, and cannot meet the mechanical five-proof requirements required by customers: a. Prevent the switch from being accidentally pulled and closed; b. Prevent the isolation knife switch from being pulled and closed with load; c. Prevent accidental entry into the charged interval; Gate etc.
Method used
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Embodiment 1
[0021] Such as Figure 1-2 As shown, the interlocking mechanism of the circuit breaker of the ring main unit in this embodiment includes a program lock 1 installed inside the circuit breaker and a mechanical interlock device controlled by the program lock 1. There is also a control electrical opening and closing device above the program lock 1. The micro switch 2 of the mechanism, the program lock 1 has a pin shaft 12 that can slide up and down. The micro switch 2 is fixedly connected. The upper end of the pin shaft 12 is located directly below the contact of the micro switch 2. The program lock 1 is provided with a program lock key 11. The pin shaft 12 is driven by the program lock key 11 to slide up and down. The pin shaft 12 Touch the micro switch 2 to open or close to make it play the function of electrical interlock.
[0022] The mechanical interlocking device in this embodiment includes a closing button plate 31, an opening button plate 32, a pressing plate 33 and a fix...
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The invention relates to the field of circuit breaker electrical equipment and especially relates to an interlocking mechanism of a ring-network cabinet breaker. The interlocking mechanism comprises a program lock arranged inside a circuit breaker and a mechanical interlocking mechanism controlled by the program lock. A microswitch used for controlling an electrical opening / closing mechanism is arranged above the program lock. The program lock is provided with a hinge pin capable of sliding up and down. The hinge pin of the program lock drives the mechanical interlocking mechanism and the microswitch to realize the interlocked opening function. According to the technical scheme of the invention, when the interlocking mechanism of the ring-network cabinet breaker is put to use, the opening / closing state is controlled by means of the mechanical interlocking mechanism together with the electrical opening / closing mechanism. Therefore, the switch is effectively prevented from being switched on by mistake. Meanwhile, an isolation switch is prevented from being switched on in the on-load manner. At the same time, the operations of getting into a charged interval by mistake, hanging a ground wire in the live-line manner, and switching on the ground wire are also avoided.
Description
technical field [0001] The invention relates to the technical field of circuit breaker electrical equipment, in particular to a program lock interlocking mechanism for a circuit breaker of a SEG ring network cabinet. Background technique [0002] At present, the program lock interlocking mechanism of the existing vacuum circuit breaker, the program lock is generally placed outside the circuit breaker case, the structure is complicated, the implementation method is complicated, and it is easy to be damaged, which affects the appearance of the circuit breaker. In addition, the existing program lock, such as China Invention patents 201420478086.4 and 88202900.2 disclosed in 201420478086.4 and 88202900.2 can play a certain role in preventing misoperation, but because it is too simple, it cannot completely avoid the risk of double circuit breakers closing at the same time, and cannot meet the mechanical five-proof requirements required by customers: a. Prevent the switch from bei...
Claims
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IPC IPC(8): H01H9/20H01H71/10
CPCH01H9/20H01H71/1009
Inventor 梁斌季晓青唐明
Owner 常州阿斯博开关有限公司