CN113889387A - Quick closing anti-drop-out fuse and control method - Google Patents
Quick closing anti-drop-out fuse and control method Download PDFInfo
- Publication number
- CN113889387A CN113889387A CN202111201169.XA CN202111201169A CN113889387A CN 113889387 A CN113889387 A CN 113889387A CN 202111201169 A CN202111201169 A CN 202111201169A CN 113889387 A CN113889387 A CN 113889387A
- Authority
- CN
- China
- Prior art keywords
- fuse
- hanging
- moving contact
- fuse tube
- drop
- 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.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims description 15
- 230000003068 static effect Effects 0.000 claims abstract description 6
- 239000003302 ferromagnetic material Substances 0.000 claims abstract description 4
- 230000001133 acceleration Effects 0.000 claims description 26
- 230000002829 reductive effect Effects 0.000 claims description 9
- 230000005611 electricity Effects 0.000 claims description 5
- 230000005291 magnetic effect Effects 0.000 claims description 5
- 230000003247 decreasing effect Effects 0.000 claims description 3
- 238000010801 machine learning Methods 0.000 claims description 3
- 239000000725 suspension Substances 0.000 claims 1
- 238000009434 installation Methods 0.000 description 3
- 230000005415 magnetization Effects 0.000 description 3
- 230000036961 partial effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
-
- 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
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F18/00—Pattern recognition
- G06F18/20—Analysing
- G06F18/21—Design or setup of recognition systems or techniques; Extraction of features in feature space; Blind source separation
- G06F18/214—Generating training patterns; Bootstrap methods, e.g. bagging or boosting
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F18/00—Pattern recognition
- G06F18/20—Analysing
- G06F18/24—Classification techniques
- G06F18/241—Classification techniques relating to the classification model, e.g. parametric or non-parametric approaches
-
- 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
-
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Data Mining & Analysis (AREA)
- Theoretical Computer Science (AREA)
- Computer Vision & Pattern Recognition (AREA)
- Bioinformatics & Cheminformatics (AREA)
- Bioinformatics & Computational Biology (AREA)
- Artificial Intelligence (AREA)
- Evolutionary Biology (AREA)
- Evolutionary Computation (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Fuses (AREA)
Abstract
The invention discloses a rapid closing anti-drop-out fuse, which comprises: the upper part of the insulating sleeve is fixedly connected with an upper static contact, the lower part of the insulating sleeve is fixedly connected with a lower moving contact, and the lower moving contact is provided with a hanging groove; the lower end of the fuse tube is fixedly connected with a hanging rod, and the lower part of the fuse tube is hung in the hanging groove through the hanging rod; the lower moving contact is a permanent magnet, and the hanging rod is made of ferromagnetic materials. The problem of the prior art exist fuse tube be difficult for taking place the high altitude between falling and the fuse tube is easily installed is solved.
Description
Technical Field
The invention relates to a rapid switching-on anti-drop-out fuse and a control method thereof, belonging to the technical field of drop-out fuses.
Background
The drop-out fuse is a short-circuit protection switch most commonly used for 10kV distribution line branch lines and distribution transformers. The fuse tube comprises an insulating sleeve and a fuse tube, wherein the upper part of the insulating sleeve is fixedly connected with an upper static contact, the lower part of the insulating sleeve is fixedly connected with a lower moving contact, the lower moving contact is provided with a hanging groove, the lower end of the fuse tube is fixedly connected with a hanging rod, the lower part of the fuse tube is hung in the hanging groove through the hanging rod, once short circuit occurs, the upper part of the fuse tube is separated from the upper static contact, the fuse tube rotates in the hanging groove around the hanging rod at the lower part, and therefore a current loop is cut off.
However, in order to prevent the fuse tube from falling from the hanging groove to cause high-altitude falling, the hanging groove is designed to be narrow or zigzag in shape, so that the hanging rod is prevented from being separated from the hanging groove. Therefore, the contradiction between difficult high-altitude falling of the fuse tube and easy installation of the fuse tube exists in the prior art, and the drop-out fuse which is not easy to high-altitude falling and is easy to install the fuse tube is urgently needed.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the utility model provides a quick closing and anti-drop-out fuse and a control method, which overcome the defects of the prior art.
The technical scheme of the invention is as follows: a rapid closing anti-drop-out fuse comprises:
the upper part of the insulating sleeve is fixedly connected with an upper static contact, the lower part of the insulating sleeve is fixedly connected with a lower moving contact, and the lower moving contact is provided with a hanging groove;
the lower end of the fuse tube is fixedly connected with a hanging rod, and the lower part of the fuse tube is hung in the hanging groove through the hanging rod;
the lower moving contact is a permanent magnet, and the hanging rod is made of ferromagnetic materials.
Further, the width of the hanging groove is gradually reduced from top to bottom.
Further, still include:
the barb, barb fixed connection is in hanging groove upper portion open-ended lateral part, and the barb is close to the side of hanging the groove and is greater than 45 degrees with the contained angle of hanging groove opening width direction.
Further, still include:
the end part of the magnetizing column is fixedly connected to the left side of the lower moving contact and is in contact with the lower moving contact;
a magnetizing coil wound on the magnetizing pole;
the output end of the rectifier is electrically connected with the magnetizing coil;
and the input end of the transformer is electrically connected with the fuse cable, and the output end of the transformer is electrically connected with the rectifier.
Further, still include:
a controller;
the acceleration sensor is arranged on the fuse tube and is electrically connected with the controller;
and the input end of the relay is electrically connected with the controller, and the output end of the relay is connected between the rectifier and the magnetizing coil in series.
Further, the transformer and the fuse tube are in parallel connection.
Furthermore, the end part of the connecting rod of the insulating sleeve is fixedly connected with a sleeve box, the connecting sleeve box is matched with the pull rod of the tower beam, and the connecting sleeve box is provided with a connecting hole matched with the screw hole of the pull rod.
A method of controlling a fuse, the method comprising:
s01, collecting acceleration sensor data in a t-time period when the fuse tube falls and obtaining a training sample set according to the acceleration sensor data;
s02, the controller generates a classification prediction model from the training sample set by using a machine learning algorithm;
s03, classifying the acceleration sensor data by using the classification prediction model every t time periods;
s04, outputting a classification result: the fuse is dropped or not dropped;
and S05, if the classified result is that the fuse falls, the controller controls the output end of the relay to be conducted to electrify the magnetizing coil, and if the classified result is that the fuse does not fall, the controller jumps to the step S03.
Further, between step S02 and step S03, the method further includes:
s03-1, if the acceleration sensor detects that the acceleration in the horizontal direction is increased and the acceleration in the vertical direction is decreased, executing the step S03, otherwise, executing the step circularly.
Further, the t time period is less than the total time for the fuse tube to fall from the beginning to the lowest point.
The invention has the beneficial effects that: according to the invention, the hanging rod is sucked in the hanging groove through the attraction between the lower moving contact and the hanging rod, when the hanging rod moves upwards, the attraction can reduce the upward acceleration of the hanging rod, so that the hanging rod cannot move to the upper part of the opening of the hanging groove, and the risk of the hanging rod falling out of the hanging groove is reduced; the invention solves the contradiction between the fuse tube not easy to fall off high altitude and the fuse tube easy to install in the prior art, and the drop-out fuse of the fuse tube is not easy to fall off high altitude and the fuse tube is easy to install.
Drawings
FIG. 1 is a front view of an embodiment of the present invention;
FIG. 2 is a partial view at A of FIG. 1;
FIG. 3 is a perspective view of an embodiment of the present invention;
FIG. 4 is a perspective view of another perspective view according to the present invention;
FIG. 5 is a partial view at B of FIG. 4;
FIG. 6 is a circuit connection block diagram according to an embodiment of the invention.
Detailed Description
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and furthermore, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In order to better understand the technical solutions, the technical solutions will be described in detail below with reference to the drawings and the detailed description.
Example 1 was carried out: referring to fig. 1 to 6, a rapid-closing anti-drop-out fuse includes: the device comprises an insulating sleeve 1, wherein the upper part of the insulating sleeve 1 is fixedly connected with an upper static contact 1-1, the lower part of the insulating sleeve 1 is fixedly connected with a lower moving contact 1-2, and the lower moving contact 1-2 is provided with a hanging groove 1-2-1; the lower end of the fuse tube 2 is fixedly connected with a hanging rod 2-1, and the lower part of the fuse tube 2 is hung in a hanging groove 1-2-1 through the hanging rod 2-1; the lower moving contact 1-2 is a permanent magnet, and the hanging rod 2-1 is made of a ferromagnetic material.
The hanging rod 2-1 is sucked in the hanging groove 1-2-1 through the attraction between the lower moving contact 1-2 and the hanging rod 2-1, when the hanging rod 2-1 moves upwards, the attraction can reduce the upward acceleration of the hanging rod 2-1, so that the hanging rod 2-1 can not move to the upper part of the opening of the hanging groove 1-2-1, and the risk that the hanging rod 2-1 is separated from the hanging groove 1-2-1 is reduced; because the risk that the hanging rod 2-1 is separated from the hanging groove 1-2-1 is reduced, the opening at the upper part of the hanging groove 1-2-1 can be enlarged, the hanging groove 1-2-1 can not be designed to be narrow or bent, the hanging rod 2-1 can be ensured not to be separated from the hanging groove 1-2-1 easily, and meanwhile, even if the fuse tube 2 is installed at night, the hanging rod 2-1 can be installed in the hanging groove 1-2-1 more easily.
Further, the width of the hanging groove 1-2-1 is gradually reduced from top to bottom.
The opening of the hanging groove 1-2-1 is larger, and the hanging rod 2-1 is easier to be installed on the hanging groove 1-2-1.
Further, still include: the barb 1-2-2, the barb 1-2-2 is fixedly connected with the side part of the opening at the upper part of the hanging groove 1-2-1, and the included angle between the side surface of the barb 1-2-2, which is close to the hanging groove 1-2-1, and the width direction of the opening of the hanging groove 1-2-1 is more than 45 degrees.
The barb 1-2-2 can block the hanging rod 2-1, so that the hanging rod 2-1 is prevented from being separated from the lower moving contact 1-2, and a layer of safety is added.
Further, still include: the end part of the magnetizing column 3-2 is fixedly connected to the left side of the lower moving contact 1-2 and is in contact with the lower moving contact 1-2; the magnetizing coil 3-1 is wound on the magnetizing column 3-2; the output end of the rectifier 3-3 is electrically connected with the magnetizing coil 3-1; and the input end of the transformer 9 is electrically connected with the fuse cable, and the output end of the transformer 9 is electrically connected with the rectifiers 3-3.
Because the magnetic force of the permanent magnet is faded under the condition of long-term non-magnetization, the attractive force between the hanging rod 2-1 and the lower moving contact 1-2 is reduced, the magnetization intensity of the permanent magnet is lower, the attractive force to the hanging rod 2-1 is also lower, and the hanging rod 2-1 can be separated from the hanging groove 1-2-1 sometimes.
The patent reduces the voltage of the electricity on the fuse wire cable through the transformer 9, and then changes the electricity into direct current through the rectifier 3-3, so that the magnetizing coil 3-1 generates a magnetic field in a specific direction on the magnetizing column 3-2, firstly, the magnetizing coil can magnetize the lower moving contact 1-2 to keep the magnetization intensity of the lower moving contact 1-2, secondly, the magnetic field generated by the electricity is superposed with the magnetic field generated by the lower moving contact 1-2 to increase the attraction between the lower moving contact 1-2 and the hanging rod 2-1, and further, the probability that the hanging rod 2-1 is separated from the hanging groove 1-2-1 is reduced.
Further, still include: a controller 8; the acceleration sensor 6 is arranged on the fuse tube 2, and the acceleration sensor 6 is electrically connected with the controller 8; and the input end of the relay 7 is electrically connected with the controller 8, and the output end of the relay 7 is connected in series between the rectifier 3-3 and the magnetizing coil 3-1.
Whether the fuse tube 2 falls or not is detected through the acceleration sensor 6, so that the magnetizing coil 3-1 is electrified, and the electric energy waste caused by charging the magnetizing coil 3-1 due to the fact that the fuse tube 3-1 is not fallen is avoided.
Further, the transformer 9 is in parallel relationship with the fuse tube 2.
Here, by setting the transformer 9 and the fuse tube 2 in a parallel relationship, the dropping of the fuse tube 2 does not affect the energization of the magnetizing coil 3-1.
Furthermore, the end part of the connecting rod of the insulating sleeve 1 is fixedly connected with a sleeve box 5, the sleeve box 5 is matched with a pull rod of a tower beam, and the sleeve box 5 is provided with a connecting hole 5-1 matched with a screw hole of the pull rod.
When the installation drop out fuse is whole, need pass through the bolt fastening with the connecting rod of insulating sleeve 1 and the pull rod of shaft tower crossbeam, this process needs the people to hold the whole installation drop out fuse so that the construction bolt, because the drop out fuse is heavier, the hand fixation is comparatively wasted time and energy, here through inserting the pull rod of shaft tower crossbeam and connecting the cover box 5, the pull rod of shaft tower crossbeam can produce a pulling force to connecting the cover box 5 to play the effect of interim fixed drop out fuse, alleviate the fixed strength of staff.
A method of controlling a fuse, the method comprising:
s01, collecting data of the acceleration sensor 6 in a t-time period when the fuse tube 2 falls off, and accordingly obtaining a training sample set;
s02, the controller 8 generates a classification prediction model from the training sample set by using a machine learning algorithm;
s03, classifying the data of the acceleration sensor 6 by using the classification prediction model every t time period;
s04, outputting a classification result: the fuse is dropped or not dropped;
and S05, if the classified result is that the fuse falls, the controller 8 controls the output end of the relay 7 to be conducted to electrify the magnetizing coil 3-1, and if the classified result is that the fuse does not fall, the step S03 is skipped.
In order to monitor whether the fuse tube 2 falls or not, the data of the acceleration sensor 6 when the fuse tube falls is learned through a machine, so that the magnetizing coil 3-1 is electrified when the fuse tube falls, and the electric energy consumption is saved.
Further, between step S02 and step S03, the method further includes: s03-1, if the acceleration sensor 6 detects that the acceleration in the horizontal direction is increased and the acceleration in the vertical direction is decreased, executing the step S03, otherwise, executing the step circularly.
By the step S03-1, it is judged whether the fuse tube 2 starts to fall.
Further, the t period is smaller than the total time for the fuse tube 2 to fall from the beginning to the lowest point.
If the speed is the maximum when the fuse tube 2 falls to the lowest point, the speed is the speed at which the fuse tube 2 is most easily separated from the hanging groove 1-2-1 when the speed is the maximum, and the magnetizing coil 3-1 is charged before the fuse tube 2 falls to the lowest point, so that the fuse tube 2 has the attraction force of the lower moving contact 1-2 and the magnetizing coil 3-1 when falling to the lowest point, and the probability that the hanging rod 2-1 is separated from the hanging groove 1-2-1 is greatly reduced.
The foregoing is a more detailed description of the invention in connection with specific preferred embodiments and it is not intended that the invention be limited to these specific details. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.
Claims (10)
1. A rapid closing anti-drop-out fuse comprises:
the device comprises an insulating sleeve (1), wherein the upper part of the insulating sleeve (1) is fixedly connected with an upper static contact (1-1), the lower part of the insulating sleeve (1) is fixedly connected with a lower moving contact (1-2), and the lower moving contact (1-2) is provided with a hanging groove (1-2-1);
the lower end of the fuse tube (2) is fixedly connected with a hanging rod (2-1), and the lower part of the fuse tube (2) is hung in the hanging groove (1-2-1) through the hanging rod (2-1);
the magnetic suspension device is characterized in that the lower moving contact (1-2) is a permanent magnet, and the hanging rod (2-1) is made of a ferromagnetic material.
2. The rapid closing anti-drop type fuse according to claim 1, wherein the width of the hanging slot (1-2-1) is gradually reduced from top to bottom.
3. The rapid closing anti-drop type fuse according to claim 1, further comprising:
the barb (1-2-2), barb (1-2-2) fixed connection is at the lateral part of hanging groove (1-2-1) upper portion opening, and the side that barb (1-2-2) is close to hanging groove (1-2-1) and the contained angle of hanging groove (1-2-1) opening width direction are greater than 45 degrees.
4. The rapid closing anti-drop type fuse according to claim 1, further comprising:
the end part of the magnetizing column (3-2) is fixedly connected to the left side of the lower moving contact (1-2) and is in contact with the lower moving contact (1-2);
the magnetizing coil (3-1), the magnetizing coil (3-1) is wound on the magnetizing column (3-2);
the output end of the rectifier (3-3) is electrically connected with the magnetizing coil (3-1);
the transformer (9), transformer (9) input is connected with the fuse cable electricity, and transformer (9) output is connected with rectifier (3-3) electricity.
5. The rapid closing anti-drop type fuse according to claim 4, further comprising:
a controller (8);
the acceleration sensor (6), the said acceleration sensor (6) is set up on the fuse tube (2), the acceleration sensor (6) is connected with controller (8) electrically;
the input end of the relay (7) is electrically connected with the controller (8), and the output end of the relay (7) is connected between the rectifier (3-3) and the magnetizing coil (3-1) in series.
6. The rapid closing anti-drop-out fuse according to claim 5, characterized in that the transformer (9) and the fuse tube (2) are in parallel relation.
7. The quick closing and drop-out preventing fuse according to claim 1, characterized in that the end of the connecting rod of the insulating sleeve (1) is fixedly connected with a sleeve box (5), the sleeve box (5) is matched with the pull rod of the tower beam, and the sleeve box (5) is provided with a connecting hole (5-1) matched with the screw hole of the pull rod.
8. A method of controlling a fuse according to claim 6, wherein the method comprises:
s01, collecting data of the acceleration sensor (6) in a t-time period when the fuse tube (2) starts to fall, and accordingly obtaining a training sample set;
s02, the controller (8) generates a classification prediction model from the training sample set by using a machine learning algorithm;
s03, classifying the data of the acceleration sensor (6) by using the classification prediction model every t time periods;
s04, outputting a classification result: the fuse is dropped or not dropped;
and S05, if the classified result is that the fuse falls, the controller (8) controls the output end of the relay (7) to be conducted to electrify the magnetizing coil (3-1), and if the classified result is that the fuse does not fall, the step S03 is skipped.
9. A method of controlling a fuse as claimed in claim 8, further comprising, between step S02 and step S03:
s03-1, if the acceleration sensor (6) monitors that the acceleration in the horizontal direction is increased and the acceleration in the vertical direction is decreased, executing the step S03, otherwise, executing the step circularly.
10. A method of controlling a fuse as claimed in claim 8, characterized in that the t-period is less than the total time for the fuse tube (2) to fall from start to lowest point.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111201169.XA CN113889387A (en) | 2021-10-15 | 2021-10-15 | Quick closing anti-drop-out fuse and control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111201169.XA CN113889387A (en) | 2021-10-15 | 2021-10-15 | Quick closing anti-drop-out fuse and control method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113889387A true CN113889387A (en) | 2022-01-04 |
Family
ID=79002981
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111201169.XA Pending CN113889387A (en) | 2021-10-15 | 2021-10-15 | Quick closing anti-drop-out fuse and control method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113889387A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2052950U (en) * | 1988-11-18 | 1990-02-14 | 乔发明 | Easy pull on outduor drop fuse |
| CN202034328U (en) * | 2011-04-14 | 2011-11-09 | 保定冀开电力器材有限公司 | Outdoor alternating-current high-voltage dropout fuse |
| US20170059640A1 (en) * | 2015-08-31 | 2017-03-02 | Cooper Technologies Company | System for monitoring a fuse link, fuse tube assembly and fuse cutout including same |
| CN208336140U (en) * | 2018-07-19 | 2019-01-04 | 广东电网有限责任公司 | Fuse tube and fuse switch |
| CN110706988A (en) * | 2019-10-12 | 2020-01-17 | 国网山东省电力公司利津县供电公司 | Prevent weighing down ground drop out fuse |
-
2021
- 2021-10-15 CN CN202111201169.XA patent/CN113889387A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2052950U (en) * | 1988-11-18 | 1990-02-14 | 乔发明 | Easy pull on outduor drop fuse |
| CN202034328U (en) * | 2011-04-14 | 2011-11-09 | 保定冀开电力器材有限公司 | Outdoor alternating-current high-voltage dropout fuse |
| US20170059640A1 (en) * | 2015-08-31 | 2017-03-02 | Cooper Technologies Company | System for monitoring a fuse link, fuse tube assembly and fuse cutout including same |
| CN208336140U (en) * | 2018-07-19 | 2019-01-04 | 广东电网有限责任公司 | Fuse tube and fuse switch |
| CN110706988A (en) * | 2019-10-12 | 2020-01-17 | 国网山东省电力公司利津县供电公司 | Prevent weighing down ground drop out fuse |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104616705B (en) | Reactor control rod control system | |
| CN106786340B (en) | A kind of voltage shock avoiding decompression opening device and its control method again | |
| CN113889387A (en) | Quick closing anti-drop-out fuse and control method | |
| CN1881733A (en) | Wireless remote controller charging system | |
| CN208676054U (en) | A kind of herding field free-ranging place high voltage pulse electronic enclosure | |
| CN205911161U (en) | High voltage circuit breaker electro -magnet assembly | |
| CN112952975A (en) | Electromagnetic energy collection device for smart power grid and stable power supply system | |
| CN111634202A (en) | Storage battery charging protector | |
| CN205845447U (en) | Alarming device for electric power overhaul | |
| CN106230125A (en) | A kind of online electricity getting device of unmanned aerial vehicle | |
| JP6377590B2 (en) | Electromagnetic valve drive control device and electromagnetic valve provided with electromagnetic valve drive control device | |
| CN212243847U (en) | Umbrella rope cutter and control circuit | |
| CN209233512U (en) | Storage battery protection device | |
| CN212845810U (en) | Automatic display device for low voltage of storage battery | |
| CN208368290U (en) | A kind of intelligence magnetizing/demagnetizing system | |
| CN202756734U (en) | Dual-power electromagnetic valve | |
| CN210487345U (en) | Automatic water sampling electromagnetic switch of unmanned aerial vehicle | |
| CN111968896B (en) | Quick response type recoverable fuse | |
| CN109546707A (en) | A kind of storage battery protection device | |
| CN218546912U (en) | Voltage detection rod of high-voltage transformer box | |
| CN110011394A (en) | A kind of 12V battery charger intelligent power saving control circuit | |
| CN2461139Y (en) | Remote-control high voltage drop type fuse device | |
| CN215220611U (en) | Electromagnetic coil | |
| CN220604583U (en) | Fixed contact assembly riveting device of small intelligent circuit breaker | |
| CN213277729U (en) | Power-off delay anti-theft type transformer oil tank |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |