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Structure for improving rated through-current capability of vacuum fuse based on double-gap structure

A fuse and double-gap technology, which is applied in the structural field of improving the rated flow capacity of vacuum fuses based on the double-gap structure, can solve problems such as the reduction of the gap size, achieve high compressive strength, improve breaking reliability and rated The effect of flow capacity

Pending Publication Date: 2021-06-11
XI AN JIAOTONG UNIV
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Problems solved by technology

[0002] In the design of vacuum fuses, since the vacuum gap has a strong insulation withstand voltage capability, the rated flow capacity of the vacuum fuse can be improved by shortening the length of the melt and reducing the resistance of the melt, but due to the fuse being blown The restriction of the thermal recovery characteristics of the rear arc gap limits the further reduction of the gap size

Method used

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  • Structure for improving rated through-current capability of vacuum fuse based on double-gap structure
  • Structure for improving rated through-current capability of vacuum fuse based on double-gap structure

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Embodiment Construction

[0014] The present invention is described in further detail below in conjunction with accompanying drawing:

[0015] refer to figure 1 and figure 2 , the structure of the present invention to improve the rated flow capacity of the vacuum fuse based on the double-gap structure includes a fuse case 6, a first oxygen-free copper vacuum electrode 11 is arranged at the opening of the top of the fuse case 6, and the fuse case The bottom opening of 6 is provided with a second oxygen-free copper vacuum electrode 12, and the fuse housing 6 is divided into a short vacuum gap 3 and a long vacuum gap 5, wherein the short vacuum gap 3 is provided with a short melt 2, and the long vacuum A long melt 4 is arranged in the gap 5, wherein the two ends of the short melt 2 are respectively connected with the first oxygen-free copper vacuum electrode 11 and the second oxygen-free copper vacuum electrode 12, and the two ends of the long melt 4 are respectively connected with the The first oxygen...

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Abstract

The invention discloses a structure for improving the rated through-current capability of a vacuum fuse based on a double-gap structure. The structure comprises a fuse shell, a top opening of the fuse shell is provided with a first oxygen-free copper vacuum electrode, and a bottom opening of the fuse shell is provided with a second oxygen-free copper vacuum electrode. A short vacuum gap and a long vacuum gap are separated in the fuse shell, a short melt is arranged in the short vacuum gap, a long melt is arranged in the long vacuum gap, the two ends of the short melt are respectively connected with the first oxygen-free copper vacuum electrode and the second oxygen-free copper vacuum electrode, the two ends of the long melt are connected with the first oxygen-free copper vacuum electrode and the second oxygen-free copper vacuum electrode respectively, and the rated through-current capacity of the structure is high.

Description

technical field [0001] The invention belongs to the technical field of vacuum fuses and relates to a structure for improving the rated flow capacity of vacuum fuses based on a double-gap structure. Background technique [0002] In the design of vacuum fuses, since the vacuum gap has a strong insulation withstand voltage capability, the rated flow capacity of the vacuum fuse can be improved by shortening the length of the melt and reducing the resistance of the melt, but due to the fuse being blown The restriction of the thermal recovery characteristics of the rear arc gap limits the further reduction of the gap size. Contents of the invention [0003] The purpose of the present invention is to overcome the disadvantages of the above-mentioned prior art, and provide a structure for improving the rated current capacity of the vacuum fuse based on the double-gap structure, and the rated current capacity of the structure is relatively high. [0004] In order to achieve the ab...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H85/047H01H85/12
CPCH01H85/047H01H85/12
Inventor 翟小社
Owner XI AN JIAOTONG UNIV
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