A contact arc extinguishing system, a low-voltage circuit breaker and an arc extinguishing system
A contact system and arc extinguishing technology, applied in circuit breaker parts and other directions, can solve the problems of increasing product manufacturing costs, difficult to control contact synchronization, and difficult to control performance parameters, so as to improve the breaking speed and facilitate arc extinguishing. , the effect of reducing the arc cross-sectional area
A contact system and arc extinguishing technology, applied in circuit breaker parts and other directions, can solve the problems of increasing product manufacturing costs, difficult to control contact synchronization, and difficult to control performance parameters, so as to improve the breaking speed and facilitate arc extinguishing. , the effect of reducing the arc cross-sectional area
CN107680891BActive Publication Date: 2020-06-30SOOAR TIANJIN ELECTRICAL EQUIP CO LTD
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[0062] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific implementation manners of the present invention will now be described with reference to the accompanying drawings. Wherein, the use of adjective or adverbial modifiers "horizontal" and "vertical", "upper" and "lower" etc. is only for relative reference between groups of terms, and does not describe any reference to the modified term. specific orientation constraints.
[0063] Such as figure 1 , figure 2 , image 3 , Figure 4 As shown, the present invention proposes a contact arc extinguishing system, which includes a contact system 1 and an arc extinguishing system 2; wherein:
[0064] The contact system 1 includes a movable contact 11 and a static contact 12 arranged oppositely, and the movable contact 11 has a function capable of contacting the static contact 12 (such as image 3 shown) or disconnected (as Figure 4 As shown), the mai...
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The invention provides a contact arc extinguishing system, a low-voltage circuit breaker and an arc extinguishing system. The contact arc extinguishing system comprises a contact system, an arc extinguishing system and a low-voltage circuit breaker, wherein the contact system comprises a movable contact and a fixed contact, and the movable contact is provided with a main contact and an arc contactwhich can be in contact with or be separated from the fixed contact; the arc extinguishing system is provided with an arc extinguishing chamber positioned above the contact system, the arc extinguishing chamber is internally provided with an insulating passage and a multistage narrow slit which is positioned above the insulating passage and communicates with the insulating passage, the width of the multistage narrow slit is decreased stage by stage from bottom to top, the arc contact is positioned inside the insulating passage, and the main contact is positioned outside the arc extinguishingsystem; and the low-voltage circuit breaker comprises the contact arc extinguishing system. The breaking capacity of the circuit breaker under the high voltage of more than AC 1000 V can be effectively improved.
Description
technical field [0001] The invention relates to the technical field of low-voltage circuit devices, in particular to a contact arc extinguishing system for a circuit breaker, a low-voltage circuit breaker and the arc extinguishing system. Background technique [0002] Universal circuit breaker (abbreviated as ACB) is a circuit breaker commonly used in low-voltage power distribution equipment, and is currently the most intelligent protective device in the field of low-voltage electrical appliances. [0003] With the continuous expansion of the application field of low-voltage electrical appliances, many industries use a large number of large-scale and high-power equipment, so the requirements for power supply in power engineering continue to increase. Correspondingly, the voltage requirements for universal circuit breakers used in circuit protection systems are also increasing. Higher and higher. At present, many industries (such as coal mines and ships) have transformed the...
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Patent Timeline
30 Jun 2020
Publication
CN107680891B
- IPC
- H01H73/18
- CPC
- H01H73/18
- Inventors
- 南寅; 南添