CN2515792Y - High voltage ac all range fuse - Google Patents
High voltage ac all range fuse Download PDFInfo
- Publication number
- CN2515792Y CN2515792Y CN 01277386 CN01277386U CN2515792Y CN 2515792 Y CN2515792 Y CN 2515792Y CN 01277386 CN01277386 CN 01277386 CN 01277386 U CN01277386 U CN 01277386U CN 2515792 Y CN2515792 Y CN 2515792Y
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- Prior art keywords
- fuse
- melt
- current
- novel high
- full range
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Abstract
The utility model discloses a novel high-voltage AC total range fuse which comprises a shell, a fuse body and a fuse frame; wherein the shell is structured as that a quartz glass tube layer is arranged in a high-strength glass fiber composite material tube; a Silastic film layer is arranged outside the middle part of the fuse; compact quartz sand grains are filled in the quartz glass tube. The novel high-voltage AC total range fuse produced in the utility model is characterized by evident total range protection and has the advantages of light weight, high reliability, low cost and convenience for modern production, widely applicable for various high-voltage limiting fuses to meet the requirements of the power industry development in China.
Description
The utility model relates to a kind of electrical network or electric protection device, and particularly a kind of novel high-pressure exchanges full range fuse.
Began extensively to adopt full range fuse to protect the various electric equipments of electrical network and electric power system in recent years abroad; full range fuse is a kind of new type fuse that grows up on the interchange current limiting fuse basis of routine; it is big that conventional high-voltage alternating current limiting fuse cut-offs the short circuit current ability; and significant current limliting effect is arranged; but it is difficult to cut-off reliably low overload current fault, so still there is unsafe factor.
The purpose of this utility model is that a kind of novel structure, simple is provided for the deficiency that solves above-mentioned technology, not only can cut-off short-circuit current, and a kind of novel high-pressure that can cut-off low overload current fault in any case simultaneously exchanges full range fuse.
In order to achieve the above object, a kind of novel high-pressure of the utility model design exchanges full range fuse, it comprises shell, melt and melt skeleton, and the structure that it is characterized in that described shell is the compound quartz glass inner tube layer that is provided with in the outer tube of high strength glass fiber composite material.Melt in the middle part that melt is arranged is outside equipped with the silicon rubber thin rete.Be filled with quartz sand particle closely in the pipe.
This novel high-pressure that the utility model obtains exchanges full range fuse, and significant gamut protective feature is arranged, and in light weight; the reliability height, price is low, is convenient to modern production; can be widely used in the different high-voltage and current-limitation fuses, to satisfy the needs of China's electric power industry development.
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the pre arcing time of fuse---the current characteristics curve chart;
Fig. 3 is the current limiting characteristic figure of fuse.
The utility model will be further described in conjunction with the accompanying drawings below by embodiment.
Embodiment
As shown in Figure 1; it is a kind of protection high-voltage mutual inductor gamut high-voltage and current-limitation fuse that a kind of novel high-pressure that present embodiment provides exchanges full range fuse; it comprises shell 1, melt 2 and melt skeleton 3, and the structure of described shell 1 is the compound quartz glass inner tube layer 5 that is provided with in the outer tube 4 of high strength glass fiber composite material.Melt in the middle part that melt 2 is arranged is outside equipped with silicon rubber thin rete 6.
A kind of novel high-pressure that present embodiment provides exchanges full range fuse, the compound body that its shell 1 is made up of fiberglass pipe and quartz glass.Outer tube 4 parts; form by glass fibre and polymer binder coiling; can bear the above pressure of 15～20Mpa in the pipe; quartz glass inner tube layer 5; by the quartz glass manufacturing; it not only can bear the high temperature of electric arc, can also protect the insulation property of outer tube 4 not to be subjected to the erosion of electric arc, simultaneously can also the absorption portion arc energy.The melt 2 of fuse is wound on the melt skeleton 3 of a quartz glass bar that can tolerate high arc temperature.The silicon rubber film pipe 6 that also topped one deck is made by silicon rubber in the middle part of melt 2.Can produce a large amount of gases as minimum overload current during by melt 2 and come extinguish arcs, force that small offence is current-carrying cut-offs, therefore, it has possessed the function of gamut protection.Be filled with quartz sand particle 7 closely in the pipe; when the logical fuse of bigger overload current or short circuit current; quartz sand will play significant metering function and rapidly with electric arc cooling and extinguish arcs has been cut-off circuit reliably, reach the purpose of protection electrical network and electric equipment.
The rated voltage of the full range fuse of this protection high-voltage mutual inductor is 3kV, 6kV, 10kV and four kinds of voltages of 35kV, and rated current is 0.25A, 0.5A, 1A, 2A and five kinds of specifications of 3.15A, and maximum drop-out current is 50kA.
A kind of novel high-pressure that present embodiment provides exchanges the pre arcing time of full range fuse---the current characteristics curve as shown in Figure 2, cut-offfing characteristic is the main foundation of weighing fuse performance and choosing the time spent.From this serial curve as can be seen, they are the rules that meet the full range fuse performance.For the ease of concrete analysis, the curve of getting rated current 3.15A here is that example illustrates drop-out current and time relation.When the time is 10
-2During s, can check in drop-out current from 3.15 curves is 38A, if time lengthening to 10
-1During s, can check in drop-out current from curve is 20A, if the time further extends to that of 70s, just in time drops on the interface point that low overload current cut-offs, and current value is 8A.In most of the cases, there is silicon rubber partly to begin to produce a large amount of gases and metallurgical effect, makes melt be blown state, so simultaneously or prior to the fusing of other melt part and drop-out current topped.After this, overload current is more little, has only the melt of topped silicon rubber part to work earlier and overload current is cut-off, so obtain the function that gamut is protected.
From Fig. 2 as seen, when electric current during greater than 38A, its switch off time is slightly less than 10
-2S.And actual drop-out current plays significant metering function along with the growth of prospective current, as shown in Figure 3.When cut-offfing the prospective current of 50HA, actual drop-out current is limited in the scope of 600A (peak value) from the fuse of the visible rated current 3.15A of Fig. 3.
Claims (3)
1, a kind of novel high-pressure exchanges full range fuse, it comprises shell (1), melt (2) and melt skeleton (3), and the structure that it is characterized in that described shell (1) is the compound quartz glass inner tube layer (5) that is provided with in the outer tube (4) of high strength glass fiber composite material.
2, a kind of novel high-pressure according to claim 1 exchanges full range fuse, it is characterized in that being outside equipped with silicon rubber thin rete (6) at the melt of the middle part that melt (2) is arranged.
3, a kind of novel high-pressure according to claim 1 and 2 exchanges full range fuse, it is characterized in that being filled with in the pipe quartz sand particle (7) closely.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01277386 CN2515792Y (en) | 2001-12-24 | 2001-12-24 | High voltage ac all range fuse |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01277386 CN2515792Y (en) | 2001-12-24 | 2001-12-24 | High voltage ac all range fuse |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2515792Y true CN2515792Y (en) | 2002-10-09 |
Family
ID=33681168
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01277386 Expired - Lifetime CN2515792Y (en) | 2001-12-24 | 2001-12-24 | High voltage ac all range fuse |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2515792Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109616392A (en) * | 2018-12-27 | 2019-04-12 | 南京萨特科技发展有限公司 | A kind of high breaking midget fuse and preparation method thereof |
-
2001
- 2001-12-24 CN CN 01277386 patent/CN2515792Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109616392A (en) * | 2018-12-27 | 2019-04-12 | 南京萨特科技发展有限公司 | A kind of high breaking midget fuse and preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20111224 Granted publication date: 20021009 |