A switch arc resistance contact device
An arc contact and switch technology, which is applied in the field of switch arc blocking contact devices, can solve the problems of low reliability, long arcing time, long arcing time, etc., achieves simple structure, guarantees use safety, and prolongs service life Effect
Active Publication Date: 2020-12-29
SIEGAMA ELECTRIC ZHUHAI
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Problems solved by technology
[0002] Existing ordinary load switch breaks the current in air and nitrogen for a long time, and the arc generation is large. The method of blowing air or magnetic blowing cooling to cut off the arc is used. Due to the long arcing time, the contact burns quickly, and the product Short service life and low reliability
In this case, in order to prolong the service life of the contacts and ensure the safety of the closing and opening switches, it is necessary to break a large current. Although this protects the contacts from welding when they are opened and closed, it is easy to cause Breaking arcs are too long to cause breaking failures, and to a certain extent increase the workload of the operator, complicated operations, and low efficiency.
Method used
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[0012] like figure 1 and figure 2 As shown, the present invention includes a static contact and a moving contact 1 that cooperate with each other. The static contact includes a main contact 2, a choke 3 and a connection auxiliary contact 4. The choke 3 is arranged on the Between the main contact 2 and the connection auxiliary contact 4, the tail of the connection auxiliary contact 4 protrudes toward the direction of the moving contact 1; when the moving contact 1 closes to the static contact , touches the connection auxiliary contact 4 first, and then touches the main contact 2 .
[0013] In this embodiment, the main contact 2 is a flat vertical contact block, and the main contact 2 is provided with a connection hole that cooperates with the spoiler 3 .
[0014] In this embodiment, the connection auxiliary contact 4 includes a horizontal cylindrical contact rod 1 connected to the spoiler 3 and an inclined cylindrical contact rod 2 connected to the horizontal cylindrical con...
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The invention discloses an arc-resistance contact device of switch and aims at providing an arc-resistance contact device with advantages of simple structure, simple operation, high usage safety and long service life. The arc-resistance contact device comprises a static contact and a movable contact (1) that cooperate with each other. The static contact consists of a main contact (2), a choke (3) and an auxiliary connecting contact (4); the choke (3) is arranged between the main contact (2) and the auxiliary connecting contact (4); and the tail of the auxiliary connecting contact (4) extends towards the direction of the movable contact (1). When the movable contact (1) is closed to the static contact, the auxiliary connecting contact (4) is contact and then the main contact (2) is contacted. The arc-resistance contact device is applied to the technical field of a medium-voltage equipment switch.
Description
technical field [0001] The invention relates to a switch contact, in particular to a switch arc-blocking contact device. Background technique [0002] Existing ordinary load switches have a long arcing time for breaking current in air and nitrogen, and the arc generation is large. Air blowing or magnetic blowing cooling is used to cut off the arc. Due to the long arcing time, the contacts burn quickly, and the product Short service life and low reliability. In this case, in order to prolong the service life of the contacts and ensure the safety of the closing and opening switches, it is necessary to break a large current. Although this protects the contacts from welding when they are switched on and off, it is easy to cause Too long breaking arc leads to breaking failure, and to a certain extent, it increases the workload of the operator, complicated operation, and low efficiency. Contents of the invention [0003] The technical problem to be solved by the present invent...
Claims
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IPC IPC(8): H01H9/38
CPCH01H9/38
Inventor 叶心群李文勇彭凯黎宏念
Owner SIEGAMA ELECTRIC ZHUHAI