An arc extinguishing system with high breaking capacity
A high-breaking and high-capacity technology, applied in the field of arc extinguishing systems, can solve the problems of product performance polarization, low short-circuit breaking capacity, and low product electrical life indicators, and achieve fast opening speed, good arc extinguishing effect, and accelerated speed. Effect
Active Publication Date: 2018-05-22
李蕊名
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Problems solved by technology
However, when breaking the short-circuit current, especially when the current value is extremely high, the breaking speed and arc extinguishing capacity are difficult to meet the requirements, resulting in a low short-circuit breaking capacity in the limit operation of the product, resulting in serious polarization of the product performance, and a high breaking short-circuit current capacity. The products with low electrical life index are low, and the products with higher electrical life have low short-circuit breaking capacity. Both types of products cannot meet the requirements of today's society for control and protection switches, special contactors and motor protectors for special working conditions.
Method used
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Embodiment Construction
[0024] As shown in the figure, the present invention includes a structural main body 13, a moving contact 3, a repulsive arc striking bridge 4, a static contact 5, a magnetic blower 7, a contact support 8, a contact spring 9, a spring bracket 10, and a yoke 14 , the moving contact 3 is set on the upper end of the contact support 8, the repulsion arc bridge 4 is set on the upper end of the moving contact 3, the spring support 10 can slide up and down in the contact support 8 and is connected with the lower reset contact The spring 9 and the upper end of the spring bracket 10 are connected with the movable contact 3; the upper part of the yoke 14 is fixed with the lower end of the contact support member 8.
[0025] The middle part of the contact support member 8 is placed in the vertical hole in the middle part of the structural main body 13, the structural main body 13 below the movable contact 3 is provided with a static contact 5, and the inner side of the static contact 5 is ...
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An arc extinguishing system with high breaking capability belongs to the technical field of the arc extinguishing system. The invention particularly relates to the arc extinguishing system with high breaking capability. The arc extinguishing system with high breaking capability has advantages of high opening speed and high arc extinguishing effect. The arc extinguishing system comprises the components of a structural main body, a moving contact, a repulsion arc ignition bridge, a static contact, a magnetic blowout, a contact support member, a contact spring, a spring support and a magnet yoke. The arc extinguishing system is structurally characterized in that the moving contact is arranged at the upper end of the contact support member; the repulsion arc ignition bridge is arranged above the moving contact; the spring support is arranged in the contact support member in a vertical sliding manner and is connected with a lower reset contact spring; the upper end of the spring support is connected with the moving contact; and the upper part of the magnetic yoke is fixed to the lower end of the contact support member.
Description
technical field [0001] The invention belongs to the technical field of arc extinguishing systems, in particular to an arc extinguishing system with high breaking capacity. Background technique [0002] In low-voltage electrical products such as control and protection switches, special contactors for special working conditions, and motor protectors, which require frequent operations and high requirements for electrical life and short-circuit breaking capacity, the arc generated during breaking will cause damage to the contacts. The damage directly affects the electrical life of the product, and the double breakpoint clapping structure is often used. Faster breaking speed and high-efficiency arc extinguishing ability are required in the process of breaking the rated current, which can achieve the purpose of frequent operation and high reliability. However, when breaking the short-circuit current, especially when the current value is extremely high, the breaking speed and arc ...
Claims
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IPC IPC(8): H01H9/30H01H9/34H01H9/44
CPCH01H9/30H01H9/302H01H9/34H01H9/44
Inventor 陈阅文张洪松乔军
Owner 李蕊名