A melt for DC fuse link

Abstract

The invention discloses a melt for a DC fuse link, which comprises two melt bodies. Each melt body is provided with multiple columns of first holes and multiple columns of second holes, and the size of each first hole is smaller than that of the second hole; the multiple columns of first holes and the multiple columns of second holes, at intervals from left to right, are distributed on the corresponding melt bodies; the two melt bodies are connected in a partial overlapping mode, the overlapped place of the two melt bodies is provided with two columns of first holes and a column of third holes from left to right, and each third hole is formed by partially overlapping two second holes. The melt for the DC fuse link of the invention can provide reliable protection for a related DC circuit and elements.

Description

technical field

[0001] The invention relates to a melting element for a DC fuse link. Background technique

[0002] Fuse links for semiconductor equipment protection are used for short-circuit protection of rectifier equipment and related equipment (including frequency converters, soft starters, etc.), semiconductor components and complete sets of equipment composed of them, and the core component is the fuse. play a vital role.

[0003] see figure 1 , figure 1 It is the melt of the current conventional fuse link for semiconductor protection, that is, the DC fuse link. A series of small holes 2' of the same size are opened on the melt body 1'. When a large short-circuit current passes through the melt, each adjacent The narrow neck 3' between the two rows of small holes 2 is rapidly heated due to the thermal effect of the current, and the local temperature rises rapidly until the melt fuses to break the circuit; The body is in the overload process for a long time. Cont...

Examples

Embodiment Construction

[0023] In order to enable those skilled in the art to better understand the technical solution of the present invention, its specific implementation will be described in detail below in conjunction with the accompanying drawings:

[0024] see figure 2 , image 3 and Figure 4 , the best embodiment of the present invention, a melt for DC fuses, comprising two melt bodies 1, each melt body 1 is provided with a series of first holes 2 and a series of second holes 3, The size of the first hole 2 is smaller than the size of the second hole 3, the first hole 2 is circular, the second hole 3 is circular, and the aperture of the first hole 2 is smaller than the aperture of the second hole 3; The second hole 3 of the series is distributed on the corresponding melt body 1 at intervals from left to right; the two melt bodies 1 are connected in a partially overlapping manner, and the overlap of the two melt bodies 1 is distributed from left to right. There is a row of first holes 2 an...

technical field

[0001] The invention relates to a melting element for a DC fuse link. Background technique

[0002] Fuse links for semiconductor equipment protection are used for short-circuit protection of rectifier equipment and related equipment (including frequency converters, soft starters, etc.), semiconductor components and complete sets of equipment composed of them, and the core component is the fuse. play a vital role.

[0003] see figure 1 , figure 1 It is the melt of the current conventional fuse link for semiconductor protection, that is, the DC fuse link. A series of small holes 2' of the same size are opened on the melt body 1'. When a large short-circuit current passes through the melt, each adjacent The narrow neck 3' between the two rows of small holes 2 is rapidly heated due to the thermal effect of the current, and the local temperature rises rapidly until the melt fuses to break the circuit; The body is in the overload process for a long time. Cont...

Examples

Embodiment Construction

[0023] In order to enable those skilled in the art to better understand the technical solution of the present invention, its specific implementation will be described in detail below in conjunction with the accompanying drawings:

[0024] see figure 2 , image 3 and Figure 4 , the best embodiment of the present invention, a melt for DC fuses, comprising two melt bodies 1, each melt body 1 is provided with a series of first holes 2 and a series of second holes 3, The size of the first hole 2 is smaller than the size of the second hole 3, the first hole 2 is circular, the second hole 3 is circular, and the aperture of the first hole 2 is smaller than the aperture of the second hole 3; The second hole 3 of the series is distributed on the corresponding melt body 1 at intervals from left to right; the two melt bodies 1 are connected in a partially overlapping manner, and the overlap of the two melt bodies 1 is distributed from left to right. There is a row of first holes 2 an...

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