CN112071728A - Novel high-voltage fuse and preparation method thereof - Google Patents
Novel high-voltage fuse and preparation method thereof Download PDFInfo
- Publication number
- CN112071728A CN112071728A CN202011061101.1A CN202011061101A CN112071728A CN 112071728 A CN112071728 A CN 112071728A CN 202011061101 A CN202011061101 A CN 202011061101A CN 112071728 A CN112071728 A CN 112071728A
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- fuse
- fixed contact
- contact
- tube
- cap
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
- H01H85/54—Protective devices wherein the fuse is carried, held, or retained by an intermediate or auxiliary part removable from the base, or used as sectionalisers
- H01H85/60—Protective devices wherein the fuse is carried, held, or retained by an intermediate or auxiliary part removable from the base, or used as sectionalisers the intermediate or auxiliary part having contacts at opposite ends for co-operation with the base
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H69/00—Apparatus or processes for the manufacture of emergency protective devices
- H01H69/02—Manufacture of fuses
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
- H01H85/02—Details
- H01H85/0241—Structural association of a fuse and another component or apparatus
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
- H01H85/02—Details
- H01H85/04—Fuses, i.e. expendable parts of the protective device, e.g. cartridges
- H01H85/041—Fuses, i.e. expendable parts of the protective device, e.g. cartridges characterised by the type
- H01H85/042—General constructions or structure of high voltage fuses, i.e. above 1000 V
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
- H01H85/02—Details
- H01H85/04—Fuses, i.e. expendable parts of the protective device, e.g. cartridges
- H01H85/05—Component parts thereof
- H01H85/143—Electrical contacts; Fastening fusible members to such contacts
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
- H01H85/02—Details
- H01H85/04—Fuses, i.e. expendable parts of the protective device, e.g. cartridges
- H01H85/05—Component parts thereof
- H01H85/165—Casings
- H01H85/175—Casings characterised by the casing shape or form
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
- H01H85/02—Details
- H01H85/30—Means for indicating condition of fuse structurally associated with the fuse
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
- H01H85/02—Details
- H01H85/38—Means for extinguishing or suppressing arc
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Power Engineering (AREA)
- Fuses (AREA)
Abstract
The invention discloses a novel high-voltage fuse and a preparation method thereof, wherein the preparation method comprises the following steps: one end of the first insulating column is provided with a first fixed contact and a movable contact connected with the first fixed contact, an ejection piece and a fuse tube are arranged inside the first insulating column, and the ejection piece is respectively connected with the first fixed contact and the fuse tube; the fuse tube comprises a fuse cap, an elastic mechanism and a fuse wire which are sequentially connected, and the fuse wire is fused to enable the elastic mechanism to sequentially push the fuse cap and the ejection piece so as to separate the first fixed contact from the movable contact; and one end of the second insulating column is provided with a second fixed contact which is movably connected with a conductive rod, and the other end of the conductive rod is connected with a movable contact, so that the conductive rod drives the movable contact to rotate around the second fixed contact. Through the connection of fuse wire and elastic mechanism, fuse cap, ejection piece, after the fuse wire melts, can separate moving contact and static contact, quick arc extinguishing and the contact is difficult for generating heat, improves the security, the reliability of fuse.
Description
Technical Field
The invention relates to the technical field of high-voltage equipment manufacturing, in particular to a novel high-voltage fuse and a preparation method thereof.
Background
The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art.
The high-voltage fuse is mainly used for overload and short-circuit protection of equipment such as power transmission and distribution lines, transformers and the like, and switching operation of the equipment, and common high-voltage fuses in the market at present mainly comprise drop-out fuses and closed jet fuses, wherein the drop-out fuses are most widely applied.
The inventors have found that the existing drop-out fuse has a number of serious drawbacks affecting the safe operation of the device, such as: the contact is exposed, the insulation level is low, certain dangerousness exists in the pulling-in operation and the like, and the contact is poor in contact and is easy to generate heat; in actual operation, the drop-out fuse has various defects which are difficult to overcome, and serious safety problems of line short circuit trip, override trip, equipment damage, even personal injury and the like occur frequently; the existing drop-out fuse has the following problems:
(1) due to the rough product process and manufacturing quality, the elasticity of the contact spring is insufficient, so that the contact is poor in contact and the spark overheating is generated.
(2) The inflexible property of the rotating shaft of the fusion tube ensures that the angle of the fusion tube cannot meet the regulation requirement, particularly the size of the prepared fusion tube cannot meet the regulation requirement, and the overlong fusion tube pushes the duckbill to cause that the fusion tube cannot fall down quickly after the fused mass is fused, the electric arc cannot be cut off and extinguished in time, and the fusion tube is burnt or exploded; the fuse tube has short size, difficult closing, poor contact of a contact, electric sparks, influence on the working process due to multiple closing failures of a drop fuse in actual operation, and very easy damage to equipment or personal casualty accidents.
(3) The rated disconnection capacity of the fuse is small, and the lower limit value of the rated disconnection capacity of the fuse is smaller than the three-phase short-circuit capacity of a protected system; currently, 10kV outdoor drop-out fuses are classified into three types, namely 50A, 100A, and 200A. The upper limit of the breaking capacity of the 200A drop-out fuse is 200MVA, the lower limit is 20MVA, and according to the capacity of the breaking capacity, the arc cannot be extinguished in time after the melt is fused in the short-circuit fault, so that a fuse tube is easy to burn or explode.
(4) The size of the fuse tube of the new switch is not matched with the size of the fixed contact part of the fuse, the fuse tube is easy to loosen, and the fuse tube can be automatically and mistakenly moved to fall off once external force action, vibration or strong wind weather is met during operation, so that the electric quantity is reduced, and the power supply reliability index is difficult to ensure.
Due to the defects of the prior drop-out fuse, the workload of maintenance personnel is increased, the improper use of the maintenance personnel is promoted, the due protection function of the drop-out fuse is completely lost, the power failure range is expanded only when the short circuit occurs in a circuit, and the 10kV outgoing line main breaker of the substation is tripped out in an override manner, so that the power failure of the whole circuit is caused.
Although improvements in insulation and the like have been made in the closed-jet fuses, there still exist some drawbacks, such as: the electric fracture is in the fuse, and can not form the obvious disconnection point of circuit, and the in-place of the internal electric contact part is difficult to control, causes the defects of large formation resistance, burning loss equipment, easy explosion of porcelain parts, hurting people and the like, leads to large market popularization difficulty, can not be widely applied, and can not completely replace the drop-out fuse.
In addition, the two common high-voltage fuses cannot upload a remote signaling deflection signal in real time, cannot inform workers of timely arriving at a field to process faults in the first time, and cannot meet the requirements of inspection work.
Disclosure of Invention
In order to solve the problems, the invention provides a novel high-voltage fuse and a preparation method thereof, and the novel high-voltage fuse can separate a moving contact from a static contact after a fuse is fused by connecting the fuse with an elastic mechanism, a fuse cap and an ejection piece, so that arc is rapidly extinguished, the contact is not easy to generate heat, and the safety and the reliability of the fuse are improved.
In order to achieve the purpose, the invention adopts the following technical scheme:
in a first aspect, the present invention provides a novel high voltage fuse comprising: a first insulating column and a second insulating column;
a first fixed contact and a movable contact connected with the first fixed contact are arranged at one end of the first insulating column, an ejection piece and a fuse tube are arranged inside the first insulating column, and the ejection piece is respectively connected with the first fixed contact and the fuse tube;
the fuse tube comprises a fuse cap, an elastic mechanism and a fuse wire which are sequentially connected, and the fuse wire is fused to enable the elastic mechanism to sequentially push the fuse cap and the ejection piece so as to separate the first fixed contact from the movable contact;
and one end of the second insulating column is provided with a second fixed contact which is movably connected with a conductive rod, and the other end of the conductive rod is connected with a movable contact, so that the conductive rod drives the movable contact to rotate around the second fixed contact.
In a second aspect, the present invention provides a method for manufacturing a novel high-voltage fuse, including:
arranging a first fixed contact and a movable contact connected with the first fixed contact at one end of a first insulating column;
arranging a second fixed contact at one end of a second insulating column, wherein the second fixed contact is movably connected with a conductive rod; the other end of the conducting rod is connected with a moving contact;
the ejection piece and the fuse tube are connected and then arranged inside the first insulation column, the fuse tube comprises a fuse cap, an elastic mechanism and a fuse wire which are sequentially connected, after the fuse wire is fused, the elastic mechanism pushes the fuse cap and the ejection piece to separate the first fixed contact from the movable contact, and the conductive rod drives the movable contact to rotate around the second fixed contact.
Compared with the prior art, the invention has the beneficial effects that:
according to the invention, through the connection of the fuse wire, the elastic mechanism, the fuse wire cap and the ejection piece, after the fuse wire is fused, the moving contact and the static contact can be separated, so that an obvious disconnection point of a circuit can be formed, arc can be rapidly extinguished, the contact is not easy to heat, the switching operation is simple and reliable, the defects of the existing drop-out fuse and the defect of the jet fuse that the electric disconnection point is not obvious are solved, and the safety, reliability and easy operability of the fuse are improved.
According to the invention, the magnetic induction switch is arranged, so that a fuse fusing signal can be monitored in real time, the alarm device is connected with the Internet of things platform, a remote signaling deflection signal generated by fusing of the fuse is uploaded in time, a worker is prompted to fuse the fuse, the operation and maintenance efficiency is improved, and the operation and maintenance cost is greatly reduced.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the invention and together with the description serve to explain the invention and not to limit the invention.
Fig. 1 is a schematic structural diagram of a novel high-voltage fuse provided in embodiment 1 of the present invention;
wherein, 1, a first insulating column; 2. a second insulating column; 3. a pop-up member; 4. a fuse tube; 5. a first fuse cap; 6. an elastic member; 7. a fuse piston; 8. a fuse; 9. a second fuse cap; 10. a fuse fixing screw; 11. an operation hole; 12. a fuse tube closing cap; 13. an insulating pull rod; 14. a magnetic induction switch; 15. a bolt; 16. a conductive rod; 17. the knife operating ring is isolated.
The specific implementation mode is as follows:
the invention is further described with reference to the following figures and examples.
It is to be understood that the following detailed description is exemplary and is intended to provide further explanation of the invention as claimed. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
In the present invention, terms such as "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "side", "bottom", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only terms of relationships determined for convenience of describing structural relationships of the parts or elements of the present invention, and are not intended to refer to any parts or elements of the present invention, and are not to be construed as limiting the present invention.
In the present invention, terms such as "fixedly connected", "connected", and the like are to be understood in a broad sense, and may be a fixed connection, or may be an integral connection or a detachable connection; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be determined according to specific situations by persons skilled in the relevant scientific or technical field, and are not to be construed as limiting the present invention.
Example 1
As shown in fig. 1, the present embodiment provides a novel high-voltage fuse, including: a first insulating column 1 and a second insulating column 2;
a first fixed contact and a movable contact connected with the first fixed contact are arranged at one end of the first insulating column 1, an ejection piece 3 and a fuse tube 4 are arranged inside the first insulating column 1, and the ejection piece 3 is respectively connected with the first fixed contact and the fuse tube 4;
the fuse tube 4 comprises a fuse cap, an elastic mechanism and a fuse wire 8 which are sequentially connected, and the fuse wire 8 is fused to enable the elastic mechanism to sequentially push the fuse cap and the ejection piece 3 so as to separate the first fixed contact from the moving contact;
one end of the second insulating column 2 is provided with a second fixed contact, the second fixed contact is movably connected with a conductive rod 16, and the other end of the conductive rod 16 is connected with a movable contact, so that the conductive rod 16 drives the movable contact to rotate around the second fixed contact.
In the present embodiment, a first fuse cap 5, an elastic mechanism, a fuse 8, and a second fuse cap 9 are disposed in the fuse tube 4; a first fuse cap 5 is arranged at one end of the fuse tube 4, the first fuse cap 5 is connected with an elastic mechanism, a fuse 8 is positioned on the elastic mechanism, and the other end of the fuse 8 is connected to a second fuse cap 9 at the other end of the fuse tube 4;
preferably, the other end of the fuse 8 is connected to the second fuse cap 9 by a fuse fixing screw 10, and the fuse 8 is tightly fixed at the second fuse cap 9.
In the present embodiment, the elastic mechanism includes an elastic member 6 and a fusion tube piston 7; after the fuse wire is tensioned and fixed in the fuse wire tube, the elastic potential energy of the elastic part is enhanced, after the fuse wire is disconnected, electric arcs are generated in the fuse wire tube to generate high-pressure gas, and after the fuse wire is disconnected, the elastic part releases the elastic force to push the fuse tube piston and the first fuse cap so as to bounce the moving contact to separate the moving contact from the first static contact;
preferably, the elastic member is a spring.
Preferably, the first fuse cap 5 is in contact with a line-in contact, the line-in contact is connected with the first fixed contact, and the second fuse cap is in contact with the line-out contact.
In the present embodiment, the ejector 3 is a cylinder having an insulating property, and is used to separate the movable contact from the stationary contact by the force of the high-pressure gas and the spring force.
In the embodiment, a spiral protrusion is arranged on the fuse tube, a spiral recess matched with the spiral protrusion is arranged at the position of the first insulating column inner tube corresponding to the fuse tube, and the fuse tube is fixed in the first insulating column inner tube by rotating the fuse tube;
preferably, the spiral protrusion may be provided at one end or both ends or in the middle of the fuse tube.
Preferably, an operation hole 11 is formed in the second fuse cap 9, and the fuse tube can be fixed inside the first insulating column inner tube by inserting the operation rod into the operation hole and rotating the fuse tube clockwise;
preferably, the operation hole is circular or square in shape.
Preferably, a fuse tube closing cover 12 is connected to the second fuse cap 9, and the fuse tube closing cover 12 shields and prevents contamination to an operation hole on the second fuse cap, and can directly pass through the center of the closing cover during operation.
In this embodiment, the moving contact is connected to the second stationary contact of the second insulating column through the conducting rod 16, and the second stationary contact is movably connected to the conducting rod, so that the conducting rod rotates to make a vertical opening and closing motion;
preferably, the movable contact and the conducting rod 16, and the conducting rod 16 and the second fixed contact are all connected by a bolt 15.
Preferably, an isolation knife operating ring 17 is provided on the conductive rod, and the opening and closing operation is performed by using an insulating rod hook.
Preferably, an insulating protective cover can be arranged at the positions of the outgoing line contact, the incoming line contact, the movable contact and the like.
In the embodiment, the ejection member 3 is connected with a magnetic induction switch 14 through an insulating pull rod 13, and the magnetic induction switch 14 is connected with an alarm device;
preferably, the magnetic induction switch 14 is arranged on the side surface of the fuse tube 4, and after the fuse is fused, the magnetic induction switch is disconnected, and the alarm device is started;
preferably, the alarm device can be connected with the Internet of things platform, a remote signaling signal is sent to the Internet of things platform, and the Internet of things platform sends an alarm notice to a worker;
preferably, the magnetic induction switch is in wired connection with the alarm device;
preferably, the alarm device is arranged on a base, and the novel high-voltage fuse is installed on the base.
The embodiment can realize rapid arc extinction, the contact is not easy to heat, various defects of the existing drop-out fuse and the defect that the electrical disconnection point of the jet fuse is not obvious are solved, and the safety of the fuse is improved; and by arranging the magnetic induction switch, a fuse fusing signal can be monitored in real time, the alarm device is connected with the Internet of things platform, a remote signaling deflection signal generated by fusing of the fuse is uploaded in time, the fuse fusing of a worker is prompted, the operation and maintenance efficiency is improved, and the operation and maintenance cost is greatly reduced.
In a further embodiment, there is provided a method of making the novel high voltage fuse described in example 1, comprising:
arranging a first fixed contact and a movable contact connected with the first fixed contact at one end of a first insulating column;
arranging a second fixed contact at one end of a second insulating column, wherein the second fixed contact is movably connected with a conductive rod; the other end of the conducting rod is connected with a moving contact;
the ejection piece and the fuse tube are connected and then arranged inside the first insulation column, the fuse tube comprises a fuse cap, an elastic mechanism and a fuse wire which are sequentially connected, after the fuse wire is fused, the elastic mechanism pushes the fuse cap and the ejection piece to separate the first fixed contact from the movable contact, and the conductive rod drives the movable contact to rotate around the second fixed contact.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Although the embodiments of the present invention have been described with reference to the accompanying drawings, it is not intended to limit the scope of the present invention, and it should be understood by those skilled in the art that various modifications and variations can be made without inventive efforts by those skilled in the art based on the technical solution of the present invention.
Claims (10)
1. A novel high voltage fuse, comprising: a first insulating column and a second insulating column;
a first fixed contact and a movable contact connected with the first fixed contact are arranged at one end of the first insulating column, an ejection piece and a fuse tube are arranged inside the first insulating column, and the ejection piece is respectively connected with the first fixed contact and the fuse tube;
the fuse tube comprises a fuse cap, an elastic mechanism and a fuse wire which are sequentially connected, and the fuse wire is fused to enable the elastic mechanism to sequentially push the fuse cap and the ejection piece so as to separate the first fixed contact from the movable contact;
and one end of the second insulating column is provided with a second fixed contact which is movably connected with a conductive rod, and the other end of the conductive rod is connected with a movable contact, so that the conductive rod drives the movable contact to rotate around the second fixed contact.
2. A novel high voltage fuse as claimed in claim 1 wherein said fuse tube further includes a second fuse cap, said other end of said fuse wire being connected to said second fuse cap.
3. A novel high voltage fuse as claimed in claim 2 wherein said other end of said fuse is connected to said second fuse cap by means of fuse set screws.
4. A novel high-voltage fuse as claimed in claim 2, wherein an operation hole is provided in said second fuse cap, and the fuse tube is fixed inside the first insulating column by inserting the operation rod into the operation hole and rotating the fuse tube clockwise.
5. The new high voltage fuse of claim 4 wherein said access opening is circular or square.
6. A novel high voltage fuse as claimed in claim 2 wherein a fuse tube closure is attached to said second fuse cap.
7. A novel high-voltage fuse as claimed in claim 1, wherein a spiral projection is provided on said fuse tube, a spiral recess matching with the spiral projection is provided at a position corresponding to the fuse tube in the inner cylinder of the first insulating column, and the fuse tube is fixed inside the inner cylinder of the first insulating column by rotating the fuse tube.
8. A novel high voltage fuse as claimed in claim 1 wherein said resilient means comprises a resilient member and a fuse tube piston connected to the resilient member.
9. The novel high voltage fuse as claimed in claim 1, wherein said ejection member is connected to a magnetic induction switch by an insulating pull rod, said magnetic induction switch being connected to an alarm device.
10. A preparation method of a novel high-voltage fuse is characterized by comprising the following steps:
arranging a first fixed contact and a movable contact connected with the first fixed contact at one end of a first insulating column;
arranging a second fixed contact at one end of a second insulating column, wherein the second fixed contact is movably connected with a conductive rod; the other end of the conducting rod is connected with a moving contact;
the ejection piece and the fuse tube are connected and then arranged inside the first insulation column, the fuse tube comprises a fuse cap, an elastic mechanism and a fuse wire which are sequentially connected, after the fuse wire is fused, the elastic mechanism pushes the fuse cap and the ejection piece to separate the first fixed contact from the movable contact, and the conductive rod drives the movable contact to rotate around the second fixed contact.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011061101.1A CN112071728A (en) | 2020-09-30 | 2020-09-30 | Novel high-voltage fuse and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011061101.1A CN112071728A (en) | 2020-09-30 | 2020-09-30 | Novel high-voltage fuse and preparation method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN112071728A true CN112071728A (en) | 2020-12-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011061101.1A Pending CN112071728A (en) | 2020-09-30 | 2020-09-30 | Novel high-voltage fuse and preparation method thereof |
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| CN (1) | CN112071728A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112735929A (en) * | 2021-01-27 | 2021-04-30 | 史振军 | High-voltage fuse for oil field power transmission and transformation |
| CN114864357A (en) * | 2022-07-06 | 2022-08-05 | 南通柯益诺智能科技有限公司 | Remote control intelligent drop-out fuse with self-learning capability |
| CN117316737A (en) * | 2023-11-06 | 2023-12-29 | 广东红杉信息科技有限公司 | Fuse for intelligent electric power internet of things |
-
2020
- 2020-09-30 CN CN202011061101.1A patent/CN112071728A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112735929A (en) * | 2021-01-27 | 2021-04-30 | 史振军 | High-voltage fuse for oil field power transmission and transformation |
| CN114864357A (en) * | 2022-07-06 | 2022-08-05 | 南通柯益诺智能科技有限公司 | Remote control intelligent drop-out fuse with self-learning capability |
| CN114864357B (en) * | 2022-07-06 | 2022-09-23 | 南通柯益诺智能科技有限公司 | Remote control intelligent drop-out fuse with self-learning capability |
| CN117316737A (en) * | 2023-11-06 | 2023-12-29 | 广东红杉信息科技有限公司 | Fuse for intelligent electric power internet of things |
| CN117316737B (en) * | 2023-11-06 | 2024-04-05 | 广东红杉信息科技有限公司 | Fuse for intelligent electric power internet of things |
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