CN115910722A - Fuse with independent arc extinguishing cavity - Google Patents
Fuse with independent arc extinguishing cavity Download PDFInfo
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- CN115910722A CN115910722A CN202211652768.8A CN202211652768A CN115910722A CN 115910722 A CN115910722 A CN 115910722A CN 202211652768 A CN202211652768 A CN 202211652768A CN 115910722 A CN115910722 A CN 115910722A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
The invention discloses a fuse with an independent arc extinguishing cavity, which comprises a fuse shell cover plate, a fuse shell, a wiring terminal and an arc extinguishing cavity, wherein the fuse shell cover plate is arranged on the fuse shell; the arc extinguishing cavity is surrounded by fuse shell cover plate, fuse shell and parallel arc extinguishing chamber space bar and forms, and inside is equipped with the fuse-element and connects two binding post, and it packs to have the fuse arc extinguishing to pack, has fuse arc extinguishing coating in inside coating. When the circuit normally works, each component of the arc extinguishing cavity keeps stable physicochemical property; when a circuit breaks down, the fuse melt is fused and arcing occurs under the action of fault current, and an electric arc is contacted with the arc extinguishing filler and is cooled; the arc extinguishing cavity keeps sealed, so that the pressure in the cavity is continuously increased, and the increase of the diameter of an arc is limited; the arc quenching coating generates a gas with an arc quenching effect to facilitate arc quenching. The invention can obviously improve the current breaking capacity of the fuse, shorten the arcing time, not obviously increase the production and processing difficulty of the fuse, and has certain economic benefit and practical significance.
Description
Technical Field
The application relates to the technical field of power systems and equipment protection, and relates to a fuse with an independent arc extinguishing cavity.
Background
The fuse is widely applied to the national economic life field, and in recent years, the fuse adopting a plurality of melts is widely applied to the fields of alternating current and direct current power transmission and distribution and electric equipment protection, thereby playing a role in ensuring the safety and stability of various power systems. However, such fuses often have the problems that the fault current cannot be cut off quickly when the fuse is cut off, or the time for cutting off the large current is long.
When small fault current is cut off, some researchers find that a plurality of narrow necks of the fuse can generate arcing, however, because the fault current is small, the development speed of the arc is slow, the length of the arc cannot be rapidly prolonged, the arc voltage is low relative to the arc voltage during short-circuit fault, the direct current circuit cannot exceed the direct current power supply voltage, so that the fault cannot be cut off, and the alternating current circuit cannot rapidly improve the medium recovery strength and cannot be cut off by zero crossing; a large amount of energy is absorbed by arc-extinguishing filler in the fuse during the arcing period, the arc-extinguishing filler is molten, the effects of cooling and extinguishing the arc, improving the arc voltage and the medium recovery speed after the arc are lost, the arc channel is obviously expanded at the moment, the arc-extinguishing channels of a plurality of melts are merged, the arc-extinguishing space of the arc is further enlarged, and finally the arc cannot be cooled by the arc-extinguishing filler sufficiently to cause the failure of breaking.
On the other hand, when a large current is cut off, if the volume and weight of the fuse are limited (for example, in a vehicle or a ship, the volume of the fuse is limited), it takes a long time for the arc to extinguish when the short-circuit current is too large. The above accidents all seriously affect the safety of a system protected by the fuse, the expansion and combination phenomena of an arc channel when the fuse cuts off a small current need to be improved urgently, and the shortening of the arcing time when the fuse cuts off a large current is also very important.
Patent No. cn202210046949.X utilizes a spring to rapidly pull out a fuse melt when the fuse melts solder due to abnormal heat generation of a small current, thereby increasing the speed of the fuse at the time of breaking a small fault current, and the small current breaking capability of the fuse is enhanced because the spring pulls out the fuse melt. However, the method cannot solve the problems that the arc voltage is slowly increased and the arc cannot be extinguished, and is not suitable for small current fault disconnection.
Utility model CN202020609856.X has set up the arc-extinguishing chamber with outside UNICOM inside the fuse, utilizes grooved arc-extinguishing piece to realize similar air circuit breaker's effect behind the production electric arc, and rising arc voltage will break down. The method needs to additionally arrange the arc extinguishing cavity and the arc extinguishing grid plate, increases the volume of the fuse, simultaneously needs external equipment to provide a trigger signal to cut off the melt to generate electric arc, and has a complex structure and high cost. Patents CN202210015561.3, CN202110316698.8 have similar problems.
In summary, no fuse design for promoting the breaking of the fault current by increasing the internal pressure of the fuse, limiting the arc diameter and avoiding the merging of arcing channels is found in the related patents, and part of the methods are more complicated than the traditional fuse processing and production processes, which increases the production cost and the production difficulty.
Disclosure of Invention
In order to solve the problem that when the fuse breaks small fault current, an arc channel expands and merges to cause that an arc cannot be broken, the invention provides the fuse with the independent arc extinguishing cavity, which can be used for improving the current breaking capacity of the fuse.
In order to achieve the purpose, the invention adopts the following technical scheme:
a fuse with an independent arc extinguishing cavity comprises a fuse shell cover plate 1, a fuse shell 2, a wiring terminal 3 and an arc extinguishing cavity 4;
after the fuse shell cover plate 1 and the fuse shell 2 are combined, the fuse shell cover plate has a structure which comprises a buckle, a screw hole and a first wiring terminal 301 and a second wiring terminal 302, wherein welding points can be connected with the two ends of the first wiring terminal 301 and the second wiring terminal 302, and the fuse shell cover plate and the fuse shell can be combined with wiring terminals into a whole; a certain amount of fuse melt 401, fuse arc extinguishing filler 402, arc extinguishing cavity partition plates 403 and fuse arc extinguishing coating 404 are arranged in the whole; the parallelly arranged arc extinguishing cavity partition plates 403 with certain thickness are fixed inside the fuse shell 2 in an adhesive, splicing or welding mode, and divide the fuse interior into a plurality of independent arc extinguishing cavities 4 with the fuse shell cover plate 1 and the fuse shell 2, and the arc extinguishing cavities are used for continuous fuse melts 401 to pass through; a certain number of fuse melts 401 are arranged in each independent arc extinguishing cavity respectively according to the requirements of conducting current and breaking fault, two ends of each fuse melt are respectively connected with the first connecting terminal 301 and the second connecting terminal 302, and the fuse melts are connected in parallel, so that a current path is formed between the two connecting terminals; fuse arc-extinguishing filler 402 with a certain density is uniformly filled in each single arc-extinguishing cavity; the fuse arc-extinguishing coating 404 is coated in an arc-extinguishing cavity and comprises the inner surfaces of the fuse housing cover plate 1 and the fuse housing 2, the surface of the arc-extinguishing cavity partition plate 403, the surface of the fuse arc-extinguishing filler 402 and the surface of the fuse melt 401.
Fuse shell cover plate 1, fuse shell 2 and binding post 3 combination back, during normal operating, every arc extinguishing cavity 4 has good leakproofness, does not have the interact between each arc extinguishing cavity, and can bear the change of the inside pressure of fuse during operation, temperature condition and do not influence the normal work of fuse.
When the circuit works normally, the current is conducted through the first connecting terminal 301, the fuse melt 401 and the second connecting terminal 302; when a line fails, the fuse melt 401 fuses to generate electric arcs, and the electric arcs cut off current under the action of the fuse arc-extinguishing filler 402, the arc-extinguishing cavity partition plate 403 and the fuse arc-extinguishing coating 404; finally, an electrical insulation is formed between the first connection terminal 301 and the second connection terminal 302.
After fuse shell cover plate 1 and fuse shell 2 are airtight with the fuse inner space, arc extinguishing chamber space bar 403 can tolerate the normal on-current's of fuse-element 401 and generate heat, the electric arc high temperature when the fuse-element produces the electric arc breaking current, fuse arc extinguishing filler 402 is at the fuse-element pressure that the thermal expansion brought of arcing in-process, and the influence of the physical chemistry reaction that arc extinguishing coating 404 produced, keep every arc extinguishing cavity seal at the in-process of breaking, do not have the mutual influence between each arc extinguishing cavity, and do not reduce the insulating situation between fuse-element break back first binding post 301 and the second binding post 302.
The fuse arc extinguishing filler 402 is one or a mixture of quartz sand, silica gel, alumina powder and boric acid, and the fuse arc extinguishing filler 402 is powdery or granular and is uniformly filled in each independent arc extinguishing cavity at a certain filling density; the arc extinguishing filler of the fuse does not damage the tightness of the arc extinguishing cavity when the circuit normally works and breaks down, the circuit does not have physicochemical reaction with other components in the fuse when the circuit normally works, the property is stable, and the arc extinguishing filler can quickly absorb the energy of the arc, promote the dissipation of plasma and extinguish the arc when the circuit breaks down.
When the circuit works normally, the fuse arc extinguishing coating 404 does not react with other components in the fuse in a physicochemical manner and has stable properties; the fuse arc-extinguishing coating 404 is a gas-generating material, and can generate gas with arc-extinguishing effect during the fuse breaking fault current, and can absorb the heat of the arc generated during the fuse breaking fault current to play a cooling effect.
The fuse arc extinguishing coating 404 is a melamine powder coating or a teflon PTFE coating.
Metallurgical effect points or mechanical triggering devices are arranged on the fuse melt 401 to accelerate the arcing process.
Compared with the prior art, the invention has the following advantages:
1. independent arc extinguishing cavities are applied, and each cavity is separated by a partition plate, so that the parallel arc burning channels are prevented from merging and failing during the on-off failure of the fuse;
2. the independent arc extinguishing cavity is adopted, the arc extinguishing cavity partition plate with high hardness and strong arc resistance, the fuse shell and the fuse cover plate are utilized to limit the increase of the arc ignition diameter, and the pressure in a single arc extinguishing cavity is increased, so that the arc voltage is increased, the arc conductance is reduced, and the breaking capacity of the fuse is improved;
3. by adopting a coating method, the pressure of the cavity during the arcing period is further improved by utilizing a gas generating material, the arcing energy is absorbed, and the breaking capacity of the fuse is improved.
Drawings
Fig. 1 is an isometric view of example 1, showing the overall structure of this example.
Figure 2 is a front view of the embodiment 1, showing the specific structure of the arc extinguishing chamber of the embodiment.
FIG. 3 is a left and right isometric view of example 1 showing the location of application of the fuse arc-extinguishing coating in this example.
Description of the symbols:
1: a fuse housing cover plate; 2: a fuse housing;
3: a wiring terminal; 4: an arc extinguishing cavity.
301: a first connection terminal; 302: second connecting terminal
401: fuse-element melt; 402: fuse arc extinguishing filler;
403: an arc-extinguishing chamber partition plate; 404: arc extinguishing coating of fuse
Detailed Description
The invention is described in further detail below with reference to the drawings and the detailed description.
As shown in fig. 1, a fuse with independent arc extinguishing cavity comprises a fuse shell cover plate 1, a fuse shell 2, a wiring terminal 3 and an arc extinguishing cavity 4.
As shown in fig. 2 and 3, when the fuse housing cover plate 1 and the fuse housing 2 are combined, the structure including a snap, a screw hole, a solder joint, or other structures capable of connecting the first connection terminal 301 and the second connection terminal 302 may be combined into a whole; the entirety has sufficient space within it for receiving a quantity of fuse melt 401, fuse arc quenching fill 402, arc chamber divider 403, and fuse arc quenching coating 404. The parallelly placed arc extinguishing chamber space bar 403 with certain thickness adopts modes such as gluing, grafting or butt fusion to be fixed in fuse shell 2 inside, separates into a plurality of independent arc extinguishing cavity 4 each other with fuse shell cover plate 1 and fuse shell 2 with the fuse in, arc extinguishing cavity 4 can supply continuous fuse-element 401 to pass. A certain amount of fuse melts 401 are arranged in each independent arc extinguishing cavity respectively according to the requirements of conducting current and on-off faults, two ends of each fuse melt are connected with the first wiring terminal 301 and the second wiring terminal 302 respectively, and the fuse melts are connected in parallel, so that a current path is formed between the two wiring terminals. Each individual arc extinguishing chamber is uniformly filled with a certain density of fuse arc quenching filler 402. As shown in fig. 3, the fuse arc-quenching coating 404 may be applied to the arc-quenching chamber as desired, including the inner surfaces of the fuse housing cover plate 1 and the fuse housing 2, the surfaces of the arc-quenching chamber partition plates 403, the surfaces of the fuse arc-quenching filler 402, and the surfaces of the fuse melt 401.
A fuse with independent arc extinguishing cavity, its fuse shell apron 1, fuse shell 2 and 3 combinations backs of binding post, during normal work: the influence of the internal substance on the external environment of the fuse can be ignored, and each arc extinguishing cavity 4 is ensured to have good tightness; the mutual influence among all the cavities can be ignored, and the change of conditions such as internal pressure and temperature during the working period of the fuse can be borne without influencing the normal work of the fuse.
When a circuit normally works, current is conducted through the first connecting terminal 301, the fuse melt 401 and the second connecting terminal 302; when a line fails, the fuse melt 401 melts and generates an arc, and the arc cuts off current under the action of the fuse arc-extinguishing filler 402, the arc-extinguishing chamber partition plate 403 and the fuse arc-extinguishing coating 404. Finally, an electrical insulation is formed between the first connection terminal 301 and the second connection terminal 302.
The utility model provides a fuse with independent cavity, is airtight back with the fuse inner space at fuse shell apron 1 and fuse shell 2, arc extinguishing chamber space intermediate lamella 403 can tolerate the normal on-current's of fuse-element 401 generating heat, the electric arc high temperature when the fuse-element produces electric arc breaking current, fuse arc extinguishing filler 402 is the pressure that the thermal expansion brought in the fuse-element arcing process, and the influence of the physicochemical reaction that arc extinguishing coating 404 produced, keep every arc extinguishing cavity seal in breaking process, mutual influence between each arc extinguishing cavity can be ignored, and do not excessively reduce the insulating situation between first binding post 301 and the second binding post 302 after the fuse-element breaks.
The fuse with the independent arc extinguishing cavities is characterized in that each arc extinguishing cavity is filled with fuse arc extinguishing filler 402, one or a mixture of quartz sand, silica gel, alumina powder and boric acid is adopted, and the fuse arc extinguishing filler 402 is usually in a powder or granular shape and is uniformly filled in each independent arc extinguishing cavity with a certain filling density. The arc extinguishing filler of the fuse does not damage the tightness of the arc extinguishing cavity when the circuit works normally and fails, the circuit does not react with other components 1-4 in the fuse in a physicochemical manner when the circuit works normally, the property is stable, and the arc extinguishing filler can quickly absorb the energy of the arc, promote the dissipation of plasma and extinguish the arc when the circuit fails.
In the fuse with the independent arc extinguishing cavity, the fuse arc extinguishing coating 404 does not have physicochemical reaction with other components in the fuse when the circuit normally works, and the property is stable; the fuse arc-extinguishing coating 404 is a gas-generating material, and can generate gas with arc-extinguishing effect during the fuse breaking fault current, and can absorb the heat of the arc generated during the fuse breaking fault current to play a cooling effect.
As shown in fig. 2, a fuse with independent cavities separates the internal space of the fuse into a plurality of arc-extinguishing cavities 4 by installing a plurality of arc-extinguishing cavity partition plates 403 in a fuse housing 2. After fuse shell apron 1 and fuse shell 2 are airtight with the fuse inner space, arc extinguishing chamber space bar 403 has certain thickness and mechanical strength, can tolerate the heating of fuse-element 401 normal conduction current, the electric arc high temperature when the fuse-element produces the electric arc breaking current, fuse arc extinguishing filler 402 is the pressure that the thermal expansion brought in the fuse-element arcing process, and the influence of the physicochemical reaction that arc extinguishing coating 404 produced, keep every cavity seal nature in the breaking process, make the mutual influence between each cavity can be ignored, and do not excessively reduce the insulating situation between first binding post 301 and the second binding post 302.
In some embodiments, the arc-extinguishing chamber 4 can limit the diameter of the arc during the open fault, so that the diameter of the arc is consistent with the size of the arc-extinguishing chamber, the arc is prevented from being expanded continuously, the cross-sectional area of an arc-burning channel is compressed, the resistance of the arc is increased, the voltage of the arc is increased, and the open fault is facilitated.
In some embodiments, the arc chamber spacers 403 can contact the arc during a break-open fault, absorb a portion of the arc's energy to cool the arc, and a small portion of the spacer material is vaporized at the high temperature of the arc, reducing the electrical conductivity of the arc, thereby increasing the arc resistance, increasing the arc voltage, and facilitating the break-open of the fault.
In some embodiments, the fuse melts 401 connected in parallel are fixed between the first conductive terminal 301 and the second conductive terminal 302 by welding, mechanical clamping, screwing, etc., and then are placed into the arc-extinguishing cavity 4 according to the direction of the arc-extinguishing cavity 4, so as to ensure the simplicity and convenience of the fuse assembly production process and have sufficient practicability.
In some embodiments, the fuse melts 401 connected in parallel may be the same or different, and the types of the fuse melts may be flexibly selected and arranged according to actual needs, so that the breaking effect of the fuse can be improved.
In some embodiments, metallurgical effect points or mechanical triggers may be placed on the fuse melt to speed up the arcing process.
In some embodiments, after a plurality of fuse melts 401 connected in parallel are placed in the arc extinguishing cavity, fuse arc extinguishing filler is placed, then a fuse shell cover plate is covered and fixed, the fuse arc extinguishing filler is uniformly arranged in the arc extinguishing cavity through knocking, shaking and the like, and finally the inside of each fuse arc extinguishing cavity is completely filled with the arc extinguishing filler through a hole reserved in the fuse shell cover plate or the fuse shell.
In some embodiments, the fuse arc suppressing filler 402 is usually quartz sand, silica gel, alumina powder or boric acid, wherein the quartz sand is suitable for breaking large current, and the silica gel, alumina powder or boric acid has better low current breaking capability than the quartz sand, and the cooling effect on the arc is further improved when the arc suppressing filler is processed into a finer form.
In the above implementation, the fuse arc-extinguishing coating 404 may be made of melamine powder coating, teflon PTFE coating, or other materials, and can release electronegative gases, such as fluorine-containing gas and hydrogen gas, when the arc burns, so as to reduce the electrical conductivity of the arc and promote the arc to be turned off.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (8)
1. The utility model provides a fuse with independent arc extinguishing cavity which characterized in that: the fuse protector comprises a fuse protector shell cover plate (1), a fuse protector shell (2), a wiring terminal (3) and an arc extinguishing cavity (4);
after the fuse shell cover plate (1) and the fuse shell (2) are combined, the fuse shell cover plate has a structure which comprises a buckle, a screw hole and a first wiring terminal (301) and a second wiring terminal (302) of which two ends can be connected through a welding point, and is combined with the wiring terminals into a whole; the integral body is internally used for placing a certain amount of fuse melt (401), fuse arc-extinguishing filler (402), an arc-extinguishing cavity partition plate (403) and a fuse arc-extinguishing coating (404); the parallelly arranged arc extinguishing cavity partition plates (403) with certain thickness are fixed inside the fuse shell (2) in an adhesive, splicing or welding mode, and are separated into a plurality of independent arc extinguishing cavities (4) with the fuse shell cover plate (1) and the fuse shell (2), and the arc extinguishing cavities are used for continuous fuse melts (401) to pass through; a certain amount of fuse melts (401) are arranged in each independent arc extinguishing cavity respectively according to the requirements of conducting current and breaking faults, two ends of each fuse melt are respectively connected with a first connecting terminal (301) and a second connecting terminal (302), and the fuse melts are connected in parallel, so that a current path is formed between the two connecting terminals; fuse arc-extinguishing filler (402) with a certain density is uniformly filled in each single arc-extinguishing cavity; a fuse arc extinguishing coating (404) is coated in an arc extinguishing cavity and comprises the inner surfaces of a fuse shell cover plate (1) and a fuse shell (2), the surface of an arc extinguishing cavity partition plate (403), the surface of fuse arc extinguishing filler (402) and the surface of fuse melt (401).
2. A fuse with a separate arc extinguishing chamber according to claim 1, characterized in that: fuse shell cover plate (1), fuse shell (2) and binding post (3) combination back, during normal operating, every arc extinguishing cavity (4) have good leakproofness, do not have the interact between each arc extinguishing cavity, and can bear the change of the inside pressure of fuse during operation, temperature condition and do not influence the normal work of fuse.
3. A fuse with a separate arc extinguishing chamber according to claim 1, characterized in that: when the circuit works normally, the current is conducted through the first connecting terminal (301), the fuse melt (401) and the second connecting terminal (302); when a line breaks down, the fuse melt (401) is fused to generate electric arc, and the electric arc cuts off current under the action of fuse arc-extinguishing filler (402), an arc-extinguishing cavity partition plate (403) and a fuse arc-extinguishing coating (404); finally, an electrical insulation is formed between the first connection terminal (301) and the second connection terminal (302).
4. A fuse with a separate arc extinguishing chamber according to claim 1, characterized in that: after fuse inner space is airtight at fuse shell apron (1) and fuse shell (2), arc extinguishing chamber space bar (403) can tolerate the normal on-current's of fuse-element (401) generate heat, the electric arc high temperature when the fuse-element produces the electric arc cut-off current, fuse arc extinguishing filler (402) are at the fuse-element and are lighted the pressure that the arc in-process thermal expansion brought to and the influence of the physicochemical reaction that arc extinguishing coating (404) produced, keep every arc extinguishing cavity seal at the cut-off in-process, do not have the mutual influence between each arc extinguishing cavity, and do not reduce the insulating situation between fuse-element cut-off back first binding post (301) and second binding post (302).
5. A fuse with a separate arc extinguishing chamber according to claim 1, characterized in that: the fuse arc extinguishing filler (402) is one or a mixture of quartz sand, silica gel, alumina powder and boric acid, and the fuse arc extinguishing filler (402) is powdery or granular and is uniformly filled in each independent arc extinguishing cavity at a certain filling density; the arc extinguishing filler of the fuse does not damage the tightness of the arc extinguishing cavity when the circuit normally works and breaks down, the circuit does not have physicochemical reaction with other components in the fuse when the circuit normally works, the property is stable, and the arc extinguishing filler can quickly absorb the energy of the arc, promote the dissipation of plasma and extinguish the arc when the circuit breaks down.
6. A fuse with an independent arc extinguishing chamber as defined in claim 1, wherein: when the circuit normally works, the fuse arc extinguishing coating (404) does not have physicochemical reaction with other components in the fuse and has stable property; the fuse arc extinguishing coating (404) is a gas capable of generating an arc extinguishing effect during the fuse opening fault current, and can absorb the heat of an arc generated during the fuse opening fault current to play a cooling effect.
7. A fuse with an independent arc extinguishing chamber as defined in claim 1, wherein: the fuse arc extinguishing coating (404) adopts a melamine powder coating or a Teflon PTFE coating.
8. A fuse with a separate arc extinguishing chamber according to claim 1, characterized in that: a metallurgical effect point or a mechanical trigger device is arranged on the fuse melt (401) to accelerate the arcing process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211652768.8A CN115910722A (en) | 2022-12-21 | 2022-12-21 | Fuse with independent arc extinguishing cavity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211652768.8A CN115910722A (en) | 2022-12-21 | 2022-12-21 | Fuse with independent arc extinguishing cavity |
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| Publication Number | Publication Date |
|---|---|
| CN115910722A true CN115910722A (en) | 2023-04-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211652768.8A Pending CN115910722A (en) | 2022-12-21 | 2022-12-21 | Fuse with independent arc extinguishing cavity |
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| CN (1) | CN115910722A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117334542A (en) * | 2023-12-01 | 2024-01-02 | 杭州高特电子设备股份有限公司 | Fuse with separated cavities for isolating arc extinction |
-
2022
- 2022-12-21 CN CN202211652768.8A patent/CN115910722A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117334542A (en) * | 2023-12-01 | 2024-01-02 | 杭州高特电子设备股份有限公司 | Fuse with separated cavities for isolating arc extinction |
| CN117334542B (en) * | 2023-12-01 | 2024-03-19 | 杭州高特电子设备股份有限公司 | Fuse with separated cavities for isolating arc extinction |
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