CN2653687Y - Super high drudging power fast fuse - Google Patents
Super high drudging power fast fuse Download PDFInfo
- Publication number
- CN2653687Y CN2653687Y CN 200320109671 CN200320109671U CN2653687Y CN 2653687 Y CN2653687 Y CN 2653687Y CN 200320109671 CN200320109671 CN 200320109671 CN 200320109671 U CN200320109671 U CN 200320109671U CN 2653687 Y CN2653687 Y CN 2653687Y
- Authority
- CN
- China
- Prior art keywords
- porcelain tube
- conductive plate
- breaking capacity
- superelevation
- fast acting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model relates to a high speed protective fuse with super high breaking capacity used for protecting the semiconductor component in the high power current rectifier, which comprises a porcelain tube with two ends having conductive plate and a plurality of fusing bodies passing through the porcelain tube. A plurality of round holes is positioned on each fusing body, and the other part of the porcelain tube is filled with solidified quartz sand using silicate as the main compound. The product has the advantages that: the product has 230 kA super high breaking capacity, which is of rapid breaking speed, big current amount and small I<t> value of the breaking energy.
Description
Technical field
The utility model belongs to low voltage electrical equipment control technology field; relate to a kind of fast acting fuse that is used for protection semiconductor device in the heavy-duty rectifier, its product can be used for metallurgy, chemical industry, electrolysis power, AC/DC motor transmission with in the high-power or extra heavy rectifiers such as power supply.
Background technology
In recent years, along with the power electronic technology fast development, the electric current and voltage amount of semiconductor device increases, with the semiconductor device is the also increase thereupon of rectifier power of core, the rectifying device electric current of unit group has reached 70～1000kA at present, commutating voltage 500～1500V, supporting rectifier transformer power reaches 50～100MVA.In this super high power rectifier; because the rectifier bridge arm short circuit current that semiconductor device damages can reach 200kA even bigger; this protects the fast acting fuse of semiconductor device by using to have 200kA and bigger breaking capacity with regard to requiring; so just may be when device breaks down disjunction short circuit current reliably; the isolated fault device; thereby protection rectifier operate as normal makes industrial DC power supply safe power supply.In the prior art, the breaking capacity of domestic fast acting fuse product is generally 50～100kA, the external product majority is 100～200kA, though and the fast acting fuse product of breaking capacity more than 200kA has report abroad, but the high current capacity fast acting fuse is not also seen in this area so far as yet, thereby at present domestic and international many fuse manufacturing enterprise all is devoted to develop the big capacity fast acting fuse of the above superelevation breaking capacity of 200kA, to satisfy supporting needs in the heavy-duty rectifier development.
The utility model content
The purpose of this utility model is to solve the not high enough problem of breaking capacity that the existing fast acting fuse in this area exists, and a kind of simple in structure, fast acting fuse with the above superelevation breaking capacity of 200kA is provided.
The technical solution of making is so for achieving the above object: the superelevation breaking capacity fast acting fuse that is provided has high strength ceramic material porcelain making pipe and a plurality of silver strip system melt that penetrates in the porcelain tube that two ends have conductive plate, the melt two ends directly or by brace are welded on the conductive plate, in each melt upper punch a plurality of circular holes are arranged, the porcelain tube remainder fills up quartz sand and uses silicate for solidifying by main compound, the length of porcelain tube external form * wide is 115～125mm * 115～125mm, wall thickness is 11～14mm, and height is 37～43mm, 57～63mm or 77～83mm.Fast acting fuse after this design and processing has 230kA superelevation breaking capacity, and break-time with the welding in parallel of two fusion tubes, can be formed the more superelevation breaking capacity fast acting fuse product of high current capacity less than 10ms.The key technical indexes of fast acting fuse described in the utility model is: rated operational voltage (A.C): 500V, 800V, 100V, 1250V; Rated operational current (A.C): 2500A～4000A (single fusion tube), 4600A～6800A (duplex melting tube); Break-time: less than 10ms; Breaking capacity: 230kA (root mean square value).Above-mentioned technical indicator with representing specification 1000V/3600A to test in the ABB of world group company special high-pressure laboratory in these series of products, is passed through according to the IEC-269 of International Electrotechnical Commission standard pass the test in this breadboard 1150V, 230kA (root mean square value) hookup.
Description of drawings
Fig. 1 is the main line of vision schematic diagram of single fusion tube structure of the present utility model.
Fig. 2 is the side direction structural representation of Fig. 1.
The main line of vision schematic diagram of Fig. 3 duplex melting tube structure of the present utility model.
Fig. 4 is the end view of Fig. 3.
Embodiment
Referring to accompanying drawing, in comprising, superelevation breaking capacity fast acting fuse described in the utility model is provided with the porcelain tube 1 of melt 2, and porcelain tube 1 is made by high strength ceramic material, can tolerate high I
2T value, its height A are 40mm, 60mm, three kinds of specifications of 80mm, and external diameter is 120mm * 120mm; Melt 2 is fast and I by many fusing speed
20.11～0.16mm thickness silver strip punching out that the t value is little forms, and the melt two ends are welded on brace 3 and the conductive plate 4, and brace 3 is welded on the conductive plate 5.Every melt 2 upper punches have a plurality of circular holes, be 1.3～1.7mm towards the diameter of circular hole, two hole vertical direction spacings are 1.4～1.9mm, two hole horizontal direction spacings are 6～10mm; Tamp quartz sand 6 around the melt equably, and be that the compound of leading is solidified into entity with sodium metasilicate.In single fusion tube structure illustrated in figures 1 and 2, fuse one end conductive plate 4 is a shape of plate plane, other end conductive plate 5 is for having the quincunx plate of symmetric figure 4 * M12 screw, in the fuse structure of Fig. 3 and two porcelain vase parallel connections shown in Figure 4, porcelain tube 1 one end conductive plates 4 are for having the shape of plate plane of dipteron shape, and other end conductive plate 5 is two quincunx plates that have symmetric figure 4 * M12 screw.This structure helps being installed in carries out single face on the water cooling copper bar of heavy-duty rectifier and forces the water flowing cooling, reduces the fuse temperature rise, guarantees product quality.
Operation principle of the present utility model is: fuse is everlasting and is connected in series with semiconductor device in the heavy-duty rectifier brachium pontis, when passing through 200KA or bigger short circuit current in case device fault forms rectifier transformer secondary side short circuit, melt fusing in the fuse, vaporization, arcing, the energy of electric arc is absorbed the back blow-out by quartz sand and disjunction fault branch reliably, keeps rectifier normally to move.Because this fuse has 230KA superelevation breaking capacity, can guarantee short circuit current huge in heavy-duty rectifier disjunction successfully, the concurrent alarm of being out of order, the computer-controlled needs of comprehensive automation of cooperation DC power-supply system.
Claims (4)
1, a kind of superelevation breaking capacity fast acting fuse, it is characterized in that having two ends and have conductive plate (4,5) high strength ceramic material porcelain making pipe (1) and a plurality of silver strip system melt (2) that penetrates in the porcelain tube (1), melt (2) two ends directly or by brace (3) are welded on conductive plate (4,5) on, in each melt (2) upper punch a plurality of circular holes are arranged, the porcelain tube remainder fills up quartz sand (6) and uses silicate for solidifying by main compound, the length of porcelain tube (1) external form * wide is 115～125mm * 115～125mm, wall thickness is 11～14mm, and height is 37～43mm, 57～63mm or 77～83mm.
2, superelevation breaking capacity fast acting fuse as claimed in claim 1 is characterized in that porcelain tube (1) one end conductive plate (4) is shape of plate plane, and other end conductive plate (5) is for having the quincunx plate of symmetric figure 4 * M12 screw.
3, superelevation breaking capacity fast acting fuse as claimed in claim 1 is characterized in that porcelain tube (1) one end conductive plate (4) for having the shape of plate plane of dipteron shape, and other end conductive plate (5) is for having the quincunx plate of symmetric figure 4 * M12 screw.
4, superelevation breaking capacity fast acting fuse as claimed in claim 1, it is characterized in that on the melt (2) be 1.3～1.7mm towards the diameter of circular hole, two hole vertical direction spacings are 1.3～1.8mm, two hole horizontal direction spacings are 7～12mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320109671 CN2653687Y (en) | 2003-10-22 | 2003-10-22 | Super high drudging power fast fuse |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320109671 CN2653687Y (en) | 2003-10-22 | 2003-10-22 | Super high drudging power fast fuse |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2653687Y true CN2653687Y (en) | 2004-11-03 |
Family
ID=34343338
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200320109671 Expired - Fee Related CN2653687Y (en) | 2003-10-22 | 2003-10-22 | Super high drudging power fast fuse |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2653687Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101488429A (en) * | 2008-01-17 | 2009-07-22 | 西门子公司 | Method for treating and fixing quartz sand through activation, fixed quartz sand body and excess voltage protection device |
-
2003
- 2003-10-22 CN CN 200320109671 patent/CN2653687Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101488429A (en) * | 2008-01-17 | 2009-07-22 | 西门子公司 | Method for treating and fixing quartz sand through activation, fixed quartz sand body and excess voltage protection device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |