CN100365753C - Fused mass structure of high voltage current-limiting fuse - Google Patents
Fused mass structure of high voltage current-limiting fuse Download PDFInfo
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- CN100365753C CN100365753C CNB2004100259987A CN200410025998A CN100365753C CN 100365753 C CN100365753 C CN 100365753C CN B2004100259987 A CNB2004100259987 A CN B2004100259987A CN 200410025998 A CN200410025998 A CN 200410025998A CN 100365753 C CN100365753 C CN 100365753C
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- fused mass
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- fused
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Abstract
The present invention relates to a fused mass structure for a high-voltage current-limiting fuse, which comprises a metallic fused mass, wherein both ends of the metallic fused mass are respectively coated with one layer or more than one layer of metallic coating made of various materials which are different from that of the metallic fused mass. In the present invention, because both of the two ends of the metallic fused mass are coated with one layer or more than one layer of the metallic coating made of various materials, the resistivities of the metallic fused mass and the metallic coating are varioius. When current passes through the metallic fused mass, different current distribution is generated between the middle part of the metallic fused mass and both of the two ends of the fused mass. Various heat generation states and heat dissipation conditions can be changed by using the characteristic of the current distribution, and the temperature rise of the surface of the fused mass can be effectively controlled. The fused mass of the middle part is only provided with a single-layer metallic wire or metallic wire. Because the cross section is smaller than both of the two ends of the fused mass, the power consumption is high, and the cross section is positioned in the middle of the whole fused mass and has large heat productivity and poor heat dispersion, when overload current is generated, the middle of the fused mass is easily fused; thus, the time-current characteristic of the fuse can be adjusted.
Description
Technical field
The invention belongs to technical field of electricity, particularly a kind of melt structure of high-voltage and current-limitation fuse.
Background technology
Any fuse need satisfy the time-current characteristic that protected electric equipment proposes, and the requirement that the existing part-time-current characteristics of all kinds of fuses of producing does not now reach protected electric equipment that is to say that protective value can not meet the demands.
Summary of the invention
The resistance that the object of the present invention is to provide a kind of heat dissipating state that can change melt, shifts on the melt distributes, and improves the time-current characteristic of melt and long service life, good stability, the melt structure of the high and high-voltage and current-limitation fuse that cost is low of reliability.
For achieving the above object, the technical solution used in the present invention is to lay one or more layers of respectively at the two ends of metal bath and the metal coating metal bath different materials; Metal coating is silver, copper, zinc, tin, cadmium or corronil.
Because the present invention is laid with the metal backing of one or more layers of different materials at the two ends of metal bath, its resistivity difference, when electric current passes through melt, produce the distribution of different electric currents between them, the characteristics of utilizing this electric current to distribute can change different heating situation and radiating condition, can control the temperature rise of bath surface effectively, and the melt of middle part has only the wire or the metal tape of individual layer, because section ratio is small in ends, and power consumption is big, and it is positioned at the centre of whole melt again, big and the weak heat-dissipating of caloric value, when overload current takes place when, middle just fusing easily, thereby time one current characteristics of scalable fuse.
Description of drawings
Fig. 1 is an overall structure schematic diagram of the present invention, and wherein Fig. 1 (a) is the melt of filament, and Fig. 1 (b) is the melt of banded structure.
Embodiment
Below in conjunction with accompanying drawing the present invention is described in further detail.
Referring to Fig. 1, the present invention includes the metal coating 2 of the banded or thread metal bath 1 and one or more layers of and metal bath 1 different materials at the two ends of the metal bath 1 that is laid in.Metal bath 1 can adopt simple metal material or alloy material, in most of the cases select high-resistance alloy material for use, the effect of metal coating 2 mainly is to make the melt of making can satisfy the time-current characteristic that is proposed, the concrete cross-sectional sizes of metal material is to determine according to the rated current that designs, general single melt is in the scope of 5A-15A, thickness is no more than 0.3mm, and the method for coating can be compacting, brush plating or plating.Because the present invention is made up of the metal coating 2 at the metal bath 1 and metal bath 1 two ends that are laid in, its resistivity is different, when electric current passes through the middle part L2 of metal bath 1, the distribution that has produced different electric currents between the middle part L2 of metal bath 1 and the both ends L1, be provided with the layer of metal coating, the resistivity of inner layer metal melt 1 is greater than the resistivity of metal coating 2, then distributing by electric current obviously is the electric current of the electric current of metal bath 1 less than metal coating 2, otherwise, then the electric current of metal bath 1 is greater than the electric current of metal coating 2, utilize this distribution characteristics, can change different heating situation and radiating condition, can control the temperature rise of bath surface effectively, and metal bath 1 mid portion L2 has only the wire or the metal tape of individual layer, because the section ratio two ends are much smaller, and power consumption is much bigger, be positioned at the middle part of whole melt again, big and the weak heat-dissipating of caloric value, when overload current takes place when, the middle part is fusing easily just, thereby the time-current characteristic of scalable fuse utilizes this principle can reach the different time-current characteristics that require.
Claims (1)
1. the melt structure of a high-voltage and current-limitation fuse comprises metal bath [1], it is characterized in that: lay one or more layers of respectively at the two ends of metal bath [1] and metal coating [2] metal bath [1] different materials; Said metal coating [2] is silver, copper, zinc, cadmium or corronil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100259987A CN100365753C (en) | 2004-03-26 | 2004-03-26 | Fused mass structure of high voltage current-limiting fuse |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100259987A CN100365753C (en) | 2004-03-26 | 2004-03-26 | Fused mass structure of high voltage current-limiting fuse |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1564294A CN1564294A (en) | 2005-01-12 |
| CN100365753C true CN100365753C (en) | 2008-01-30 |
Family
ID=34480528
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100259987A Expired - Fee Related CN100365753C (en) | 2004-03-26 | 2004-03-26 | Fused mass structure of high voltage current-limiting fuse |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100365753C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100424805C (en) * | 2006-12-14 | 2008-10-08 | 王有杰 | Fuse for AC high voltage current limiting fuse and its structure |
| CN110047718A (en) * | 2019-05-31 | 2019-07-23 | 厦门大恒科技有限公司 | A kind of two-part is resistant to the fuse of the fusing structure and use of the lightning current structure |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1369227A (en) * | 1972-09-27 | 1974-10-02 | Brush Electrical Eng Co Ltd | Fuse element |
| CN2061731U (en) * | 1989-11-11 | 1990-09-05 | 湖南省长沙市熔断器厂 | Rapid fuse having new shape structure |
| JP2003217435A (en) * | 2002-01-18 | 2003-07-31 | Yazaki Corp | Fusible link |
| US6622375B1 (en) * | 1997-12-16 | 2003-09-23 | Yazaki Corporation | Method for producing a fuse element |
-
2004
- 2004-03-26 CN CNB2004100259987A patent/CN100365753C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1369227A (en) * | 1972-09-27 | 1974-10-02 | Brush Electrical Eng Co Ltd | Fuse element |
| CN2061731U (en) * | 1989-11-11 | 1990-09-05 | 湖南省长沙市熔断器厂 | Rapid fuse having new shape structure |
| US6622375B1 (en) * | 1997-12-16 | 2003-09-23 | Yazaki Corporation | Method for producing a fuse element |
| JP2003217435A (en) * | 2002-01-18 | 2003-07-31 | Yazaki Corp | Fusible link |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1564294A (en) | 2005-01-12 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080130 Termination date: 20110326 |