CN118053705A - Close integrated thing networking circuit breaker that changes - Google Patents
Close integrated thing networking circuit breaker that changes Download PDFInfo
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- CN118053705A CN118053705A CN202410453815.9A CN202410453815A CN118053705A CN 118053705 A CN118053705 A CN 118053705A CN 202410453815 A CN202410453815 A CN 202410453815A CN 118053705 A CN118053705 A CN 118053705A
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- 230000006855 networking Effects 0.000 title claims description 4
- 230000007246 mechanism Effects 0.000 claims abstract description 61
- 239000002184 metal Substances 0.000 claims abstract description 34
- 238000012545 processing Methods 0.000 claims abstract description 33
- 230000009471 action Effects 0.000 claims abstract description 18
- 238000013461 design Methods 0.000 claims abstract description 16
- 238000012544 monitoring process Methods 0.000 claims abstract description 12
- 230000035945 sensitivity Effects 0.000 claims abstract description 7
- 230000005540 biological transmission Effects 0.000 claims description 30
- 238000010206 sensitivity analysis Methods 0.000 claims description 12
- 238000011161 development Methods 0.000 claims description 8
- 230000008859 change Effects 0.000 claims description 4
- 230000002457 bidirectional effect Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 3
- 230000008569 process Effects 0.000 claims description 3
- 238000012546 transfer Methods 0.000 claims description 3
- 238000010891 electric arc Methods 0.000 claims 1
- 230000018109 developmental process Effects 0.000 description 6
- 230000005611 electricity Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
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Abstract
The invention discloses a close-changing integrated circuit breaker of the Internet of things, which comprises a shell, wherein a first connecting terminal and a second connecting terminal are respectively arranged at the upper part and the lower part in the shell, an arc extinguishing system is arranged at one side in the shell, an electromagnetic release is arranged at the side position of the arc extinguishing system in the shell, a current transformer is arranged on a deformed metal sheet positioned in the shell and positioned in a thermal bimetallic strip mechanism, and a temperature sensor is also arranged on the deformed metal sheet of the thermal bimetallic strip mechanism. The safety monitoring module is matched with the current transformer, a pair of circuit breaker outputs and internal current value monitoring, and the temperature value of the deformed metal sheet of the bimetallic strip mechanism is obtained through the temperature sensor, so that the action sensitivity of the circuit breaker is analyzed under the definition of the current value and the temperature value of the circuit breaker combined with standard design, and the action processing capacity of the circuit breaker can be fed back in real time, and the circuit breaker has better information safety processing capacity.
Description
Technical Field
The invention belongs to the technical field of application of the Internet of things, and particularly relates to a density-improved integrated circuit breaker of the Internet of things.
Background
The circuit breaker is capable of closing, carrying and breaking a current under normal circuit conditions and is capable of closing, carrying and breaking a current under abnormal circuit conditions for a prescribed time. The circuit breaker is divided into a high-voltage circuit breaker and a low-voltage circuit breaker according to the application range, and the division of a high-voltage boundary line and a low-voltage boundary line is fuzzy, and is generally called as a high-voltage electrical appliance with the voltage of more than 3 kV.
The low-voltage circuit breaker is an electrical appliance with wide application range, and the main body of the low-voltage circuit breaker consists of a shell, a wiring terminal, a mechanical locking handle device, an arc extinguishing system, an electromagnetic release and a thermal bimetallic strip mechanism; the electromagnetic release is used for realizing short-circuit protection in a circuit, when the circuit is short-circuited, the magnetic force of an electromagnet in the electromagnetic release is increased, and the traction buckle is pulled down, so that the mechanical locking handle device is unlocked, and the circuit is disconnected; the thermal bimetallic strip mechanism is used for realizing overload protection in a circuit, when overload occurs in the circuit, the top of the deformed metal strip is bent upwards, so that the movable lock catch of the mechanical locking handle device is lifted, the mechanical locking handle device is unlocked, and the circuit is disconnected; when the electromagnetic release and the thermal bimetallic strip mechanism area are in open circuit action, the generated arc is attracted and eliminated by the arc extinguishing system; and each time the handle of the mechanical locking handle means is operated, the movable lock catch and the traction lock catch are reset.
When the circuit breaker is put into circuit on-off and circuit protection work for a long time, the action delay of the internal thermal bimetallic strip and the electromagnetic release occurs due to aging, and if the circuit breaker cannot be replaced in time, electric equipment is difficult to protect in time under the conditions of serious overload and short circuit; therefore, it is necessary to provide an internet of things circuit breaker which combines with a density change integration technology and can feed back the action processing capability of the circuit breaker in real time.
Disclosure of Invention
The invention aims to provide a dense integrated circuit breaker for the Internet of things, which solves the problems in the prior art.
In order to achieve the above purpose, the present invention provides the following technical solutions: the utility model provides a close integrated thing networking circuit breaker that changes, includes the casing, upper and lower part are provided with binding post one and binding post two respectively in the casing, one side is provided with the arc extinguishing system in the casing, in the casing and be located the avris position of arc extinguishing system and be provided with electromagnetic release, in the casing and be located the lower part position of arc extinguishing system and be provided with hot bimetallic strip mechanism, electromagnetic release electricity connection hot bimetallic strip mechanism, and hot bimetallic strip mechanism electricity connection binding post two, in the casing and be located the upper position of arc extinguishing system and be provided with mechanical locking handle device, mechanical locking handle device's stationary contact and binding post one are connected electrically;
a current transformer is arranged in the shell and positioned on the deformed metal sheet of the thermal bimetallic strip mechanism, and a temperature sensor is also arranged on the deformed metal sheet of the thermal bimetallic strip mechanism;
A current acquisition chip is arranged on one side in the shell, a transmission line of the current transformer is connected with an acquisition access end on the current acquisition chip, a development board is arranged in the shell and positioned at the upper part of the current acquisition chip, and an antenna is arranged at the top of the shell;
The development board is provided with a safety monitoring module, the safety monitoring module is used for matching with a current transformer and a temperature sensor, analyzing the action sensitivity of the circuit breaker in real time, combining with an antenna, and sending an analysis result to the appointed terminal equipment through encryption processing.
In order to better collect the current values of the output position and the internal position of the circuit breaker, preferably, the number of the current collection chips is at least two, and at least one current collection chip is used for collecting the current values on the deformed metal sheet of the thermal bimetallic strip mechanism in real time.
In order to better judge the action sensitivity of the circuit breaker, preferably, the safety monitoring module comprises a first current data receiving module, a second current data receiving module and a temperature data receiving module, wherein the first current data receiving module is used for receiving the current value of the deformed metal sheet of the heat transfer bimetallic strip mechanism on the current acquisition chip in real time, the second current data receiving module is used for receiving the current value on the wiring terminal II, the temperature data receiving module is used for receiving the temperature value of the thermal bimetallic strip mechanism, the first current data receiving module, the second current data receiving module and the temperature data receiving module are in transmission connection with an information isochronous buffer module, and the information isochronous buffer module is used for storing the current value of the deformed metal sheet of the thermal bimetallic strip mechanism, the current value on the wiring terminal II and the temperature value of the thermal bimetallic strip mechanism in an isochronous sequence mode;
The information isochronous buffer module is in transmission connection with a non-punctuation processing module, and the non-punctuation processing module is used for enabling the current value of the deformed metal sheet of the thermal bimetallic strip mechanism, the current value on the second wiring terminal and the temperature value of the thermal bimetallic strip mechanism to be integrated into a standard design value, and marking a value group which is different from the standard design value;
The non-benchmarking processing module is in transmission connection with the sensitivity analysis module, and the sensitivity analysis module is used for calculating a time period when the current value on the second connecting terminal becomes zero according to the deformation critical current value of the deformation metal sheet of the thermal bimetallic strip mechanism and the deformation critical temperature value change process of the thermal bimetallic strip mechanism, so that the ratio of the time period to the design action time period of the circuit breaker is calculated.
In order to transmit the data report with the positioning code to the terminal equipment matched with the data report more safely, preferably, the sensitivity analysis module is in transmission connection with an analysis generation module, the analysis generation module is used for generating the data report by the sensitivity analysis result, the analysis generation module is in transmission connection with a coding processing module and a key generation module, the coding processing module is in bidirectional transmission connection with the key generation module, the coding processing module and the key generation module are in transmission connection with a matching module, the matching module is in transmission connection with a wireless receiving and transmitting module, the wireless receiving and transmitting module is in wireless connection with the terminal equipment through an antenna, the unique positioning code of the circuit breaker is loaded at the front part of the data report through the coding processing module, the key generation module remotely transmits a key to the terminal equipment, the terminal equipment access unit is unlocked, and the data report with the positioning code is uploaded to the terminal equipment in real time through the wireless receiving and transmitting module.
Compared with the prior art, the invention has the beneficial effects that:
According to the close-improved integrated Internet of things circuit breaker, the safety monitoring module is matched with the current transformer and the current transformer to monitor the output and internal current value of the circuit breaker, the temperature value of the deformed metal sheet of the bimetallic strip mechanism is obtained through the temperature sensor, the action sensitivity of the circuit breaker is analyzed under the definition of the current value and the temperature value of the circuit breaker combined with the standard design, and the analysis result is sent to the appointed terminal equipment through encryption processing by combining with the antenna, so that the action processing capability of the circuit breaker can be fed back in real time, and the circuit breaker has good information safety processing capability.
Drawings
FIG. 1 is a schematic front view of the present invention;
FIG. 2 is a schematic left-hand view of the present invention;
FIG. 3 is a left side partially cut-away schematic view of the present invention;
FIG. 4 is a schematic diagram of module connections in a development board of the present invention.
In the figure: 1 shell, 2 binding post, 3 binding post two, 4 arc extinguishing system, 5 electromagnetic release, 6 hot bimetallic strip mechanisms, 7 current transformer, 8 current acquisition chip, 9 development board, 10 temperature sensor, 11 antenna, 101 mechanical locking handle device.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
Referring to fig. 1, 2 and 3, a circuit breaker integrated with internet of things by sealing and changing comprises a shell 1, wherein a first connecting terminal 2 and a second connecting terminal 3 are respectively screwed on the upper part and the lower part in the shell 1, an arc extinguishing system 4 is screwed on the middle side in the shell 1, an electromagnetic release 5 is screwed on the side position in the shell 1 and positioned on the arc extinguishing system 4, a thermal bimetallic strip mechanism 6 is screwed on the lower part in the shell 1 and positioned on the arc extinguishing system 4, the electromagnetic release 5 is electrically connected with the thermal bimetallic strip mechanism 6, the thermal bimetallic strip mechanism 6 is electrically connected with the second connecting terminal 3, a mechanical locking handle device 101 is screwed on the upper part in the shell 1 and positioned on the arc extinguishing system 4, and a fixed contact of the mechanical locking handle device 101 is electrically connected with the first connecting terminal 2 through the electromagnetic release 5 and the thermal bimetallic strip mechanism 6;
A current transformer 7 is screwed on the deformed metal sheet positioned in the shell 1 and in the thermal bimetallic strip mechanism 6, the deformed metal sheet of the thermal bimetallic strip mechanism 6 is sleeved by the current transformer 7, a temperature sensor 10 is screwed on the deformed metal sheet of the thermal bimetallic strip mechanism 6, and the sensing surface of the temperature sensor 10 is attached to the lower part of the bent part of the deformed metal sheet of the thermal bimetallic strip mechanism 6;
The lower screw at the left side in the shell 1 is fixedly provided with a current acquisition chip 8, a transmission line of a current transformer 7 is connected with an acquisition access end on one of the current acquisition chips 8, on the other hand, the current transformer is sleeved on a wiring terminal II 3 cable, and the transmission line of the current transformer is connected with an acquisition access end on the other current acquisition chip 8; a development board 9 is screwed and fixed on the upper part of the current acquisition chip 8 in the shell 1, and an antenna 11 is screwed and fixed on the top of the shell 1;
The development board 9 is provided with a safety monitoring module which is used for matching the current transformer 7 and the temperature sensor 10, analyzing the action sensitivity of the circuit breaker in real time, combining the antenna 11 and sending the analysis result to the appointed terminal equipment through encryption processing.
Referring to fig. 3, the number of the current collecting chips 8 is two, and one current collecting chip 8 is used for collecting the current value on the deformed metal sheet of the thermal bimetal mechanism in real time.
Referring to fig. 4, the safety monitoring module includes a first current data receiving module, a second current data receiving module, and a temperature data receiving module, where the first current data receiving module is configured to receive a current value of a deformed metal sheet of the heat transfer bimetal mechanism 6 on the current collecting chip 8 in real time, and more specifically, the current collecting chip 8 connected to the current transformer 7 is connected to the first current data receiving module through a transmission line; the second current data receiving module is used for receiving the current value on the second connecting terminal 3, and more specifically, the current acquisition chip 8 connected with the current transformer is connected with the second current data receiving module through a transmission line, so that the current data output by the circuit breaker can be acquired, and the current data in the circuit breaker can be acquired; the temperature data receiving module is used for receiving the temperature value of the thermal bimetallic strip mechanism 6, the first current data receiving module, the second current data receiving module and the temperature data receiving module are in transmission connection with an information isochronous buffer module, and the information isochronous buffer module is used for storing the current value of the deformed metal strip of the thermal bimetallic strip mechanism 6, the current value on the second connecting terminal 3 and the temperature value of the thermal bimetallic strip mechanism 6 in an isochronous sequence mode, wherein the instantaneous acquisition time is 0.1 second, the acquisition time is 5 seconds, and the information isochronous buffer module is deleted after 5 seconds;
By collecting the breaker output and its internal current value in real time, at the breaker self-breaking action instant, the instantaneous breaker output current peak value and its internal current peak value can be collected, and the deformed sheet metal maximum temperature value of the thermal bimetal mechanism 6 can be collected.
The information isochronous buffer module is in transmission connection with a non-benchmarking point processing module, and the non-benchmarking point processing module is used for integrating the current value of the deformed metal sheet of the thermal bimetallic strip mechanism 6, the current value on the second wiring terminal 3 and the temperature value of the thermal bimetallic strip mechanism 6 into a standard design value and marking a value group which is different from the standard design value;
wherein the standard design values are: the standard current value of the breaking action of the breaker and the highest temperature value of the deformed metal sheet of the thermal bimetallic strip mechanism 6; and comparing the standard current value and the standard highest temperature value with the acquired current value of the deformed metal sheet of the thermal bimetallic strip mechanism 6, the current value on the wiring terminal II 3 and the temperature value of the thermal bimetallic strip mechanism 6 through a non-standard point processing module, and detecting occurrence points different from the standard design values.
The non-calibration point processing module is in transmission connection with the sensitivity analysis module, the sensitivity analysis module is used for calculating a time period when the current value on the wiring terminal II 3 becomes zero according to the deformation critical current value of the deformation metal sheet of the thermal bimetallic strip mechanism 6 and the deformation critical temperature value change process of the thermal bimetallic strip mechanism 6, wherein the deformation critical is an instantaneous state of breaking current, so as to calculate the ratio of the time period to the design action time period of the circuit breaker, if the deformation metal sheet of the thermal bimetallic strip mechanism 6 is actually monitored to reach the standard design deformation critical temperature value Q, the standard design deformation critical current value is R, the time at the moment is T1, if the current value on the wiring terminal II 3 is not zero, the current value on the wiring terminal II 3 is zero, the deformation metal sheet temperature value of the bimetallic strip mechanism 6 is Q1, the current value of the bimetallic strip mechanism 6 is R1, and the overload failure degree of the circuit breaker is obtained at the moment: (Q1-Q)/Q, the breaker short circuit failure degree is: (R1-R)/R, the breaking delay time is: (T1-T)/T.
Referring to fig. 4, the sensitivity analysis module is connected with an analysis generation module in a transmission manner, the analysis generation module is used for generating a data report from a sensitivity analysis result, the analysis generation module is connected with an encoding processing module and a key generation module in a transmission manner, the encoding processing module is connected with the key generation module in a bidirectional transmission manner, the encoding processing module is connected with a matching module in a transmission manner, the matching module is connected with a wireless transceiver module in a transmission manner, the wireless transceiver module is connected with a terminal device in a wireless manner through an antenna 11, the unique positioning code of the circuit breaker is loaded at the front part of the data report through the encoding processing module, the key generation module remotely transmits the key to the terminal device, the terminal device access unit is unlocked, and the wireless transceiver module uploads the data report with the positioning code to the terminal device in real time.
The arrangement enables the generated data report with the positioning code to be effectively transmitted to the terminal equipment matched with the secret key in a wireless mode, and the data report with the positioning code is prevented from being acquired by other terminal equipment.
The working principle of this embodiment is as follows: the safety monitoring module is matched with the current transformer 7 and the current transformer to monitor the output and the internal current value of the circuit breaker, the temperature value of the deformed metal sheet of the bimetallic strip mechanism 6 is obtained through the temperature sensor 10, the action sensitivity of the circuit breaker is analyzed under the definition of the current value and the temperature value which are combined with the standard design circuit breaking, the analysis result is sent to the appointed terminal equipment through encryption processing by combining the antenna 11, and thus the action processing capacity of the circuit breaker can be fed back in real time, and the circuit breaker has better information safety processing capacity.
The foregoing description is only of the preferred embodiments of the present invention, and is not intended to limit the scope of the present invention.
Claims (4)
1. The utility model provides a close integrated thing networking circuit breaker that changes which characterized in that: the novel electric arc extinguishing device comprises a shell (1), wherein a first connecting terminal (2) and a second connecting terminal (3) are respectively arranged in the upper part and the lower part of the shell (1), an arc extinguishing system (4) is arranged on one side of the shell (1), an electromagnetic release (5) is arranged at the side position of the arc extinguishing system (4) in the shell (1), a thermal bimetallic strip mechanism (6) is arranged at the lower position of the arc extinguishing system (4) in the shell (1), the electromagnetic release (5) is electrically connected with the thermal bimetallic strip mechanism (6), the thermal bimetallic strip mechanism (6) is electrically connected with the second connecting terminal (3), a mechanical locking handle device (101) is arranged at the upper position of the arc extinguishing system (4) in the shell (1), and a fixed contact of the mechanical locking handle device (101) is electrically connected with the first connecting terminal (2);
A current transformer (7) is arranged in the shell (1) and positioned on the deformed metal sheet of the thermal bimetallic strip mechanism (6), and a temperature sensor (10) is also arranged on the deformed metal sheet of the thermal bimetallic strip mechanism (6);
One side in the shell (1) is provided with a current acquisition chip (8), a transmission line of the current transformer (7) is connected with an acquisition access end on the current acquisition chip (8), a development board (9) is arranged in the shell (1) and positioned at the upper part of the current acquisition chip (8), and an antenna (11) is arranged at the top of the shell (1);
The development board (9) is provided with a safety monitoring module, the safety monitoring module is used for being matched with the current transformer (7) and the temperature sensor (10), analyzing the action sensitivity of the circuit breaker in real time, combining with the antenna (11), and sending the analysis result to the appointed terminal equipment through encryption.
2. The density-change integrated internet of things circuit breaker of claim 1, wherein: the number of the current collection chips (8) is at least two, and at least one current collection chip (8) is used for collecting current values on the deformed metal sheet of the thermal bimetallic strip mechanism in real time.
3. The density-change integrated internet of things circuit breaker of claim 1, wherein: the safety monitoring module comprises a first current data receiving module, a second current data receiving module and a temperature data receiving module, wherein the first current data receiving module is used for receiving current values of deformed metal sheets of the heat transfer bimetallic strip mechanism (6) on a current acquisition chip (8) in real time, the second current data receiving module is used for receiving the current values of the connecting terminal II (3), the temperature data receiving module is used for receiving temperature values of the heat bimetallic strip mechanism (6), the first current data receiving module, the second current data receiving module and the temperature data receiving module are in transmission connection with an information isochronous buffer module, and the information isochronous buffer module is used for storing the current values of the deformed metal sheets of the heat bimetallic strip mechanism (6), the current values of the connecting terminal II (3) and the temperature values of the heat bimetallic strip mechanism (6) in an isochronous sequence mode;
The information isochronous buffer module is in transmission connection with a non-punctuation processing module, and the non-punctuation processing module is used for enabling the current value of the deformed metal sheet of the thermal bimetallic strip mechanism (6), the current value on the wiring terminal II (3) and the temperature value of the thermal bimetallic strip mechanism (6) to be integrated into a standard design value, and marking a value group which is different from the standard design value;
The non-benchmarking processing module is in transmission connection with the sensitivity analysis module, and the sensitivity analysis module is used for calculating a time period when the current value on the wiring terminal II (3) becomes zero according to the deformation critical current value of the deformation metal sheet of the thermal bimetallic strip mechanism (6) and the deformation critical temperature value change process of the thermal bimetallic strip mechanism (6), so that the ratio of the time period to the design action time period of the circuit breaker is calculated.
4. A density-changing integrated internet of things circuit breaker as set forth in claim 3 wherein: the system is characterized in that the sensitivity analysis module is in transmission connection with an analysis generation module, the analysis generation module is used for generating a data report from a sensitivity analysis result, the analysis generation module is in transmission connection with a coding processing module and a key generation module, the coding processing module is in bidirectional transmission connection with the key generation module, the coding processing module is in transmission connection with a matching module, the matching module is in transmission connection with a wireless receiving and transmitting module, the wireless receiving and transmitting module is in wireless connection with a terminal device through an antenna (11), the unique positioning code of the circuit breaker is loaded at the front part of the data report through the coding processing module, the key generation module remotely transmits a key to the terminal device, the terminal device access unit is unlocked, and the wireless receiving and transmitting module uploads the data report with the positioning code to the terminal device in real time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410453815.9A CN118053705B (en) | 2024-04-16 | 2024-04-16 | Close integrated thing networking circuit breaker that changes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410453815.9A CN118053705B (en) | 2024-04-16 | 2024-04-16 | Close integrated thing networking circuit breaker that changes |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN118053705A true CN118053705A (en) | 2024-05-17 |
| CN118053705B CN118053705B (en) | 2024-07-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202410453815.9A Active CN118053705B (en) | 2024-04-16 | 2024-04-16 | Close integrated thing networking circuit breaker that changes |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204706525U (en) * | 2015-07-02 | 2015-10-14 | 浙江百事宝电器有限公司 | A kind of hydraulic-electromagnetic residual current circuit breaker |
| KR20200082129A (en) * | 2018-12-28 | 2020-07-08 | 강승오 | Disaster and disaster warning system using a composite sensor that can be used in stand-alone or in various electrical and electronic devices |
| CN113012998A (en) * | 2021-03-10 | 2021-06-22 | 北京中兆龙芯软件科技有限公司 | Intelligent internet-of-things type residual current operated circuit breaker |
| CN114441949A (en) * | 2020-11-04 | 2022-05-06 | 厦门华电开关有限公司 | On-line monitoring device of circuit breaker and switch cabinet |
| CN220753343U (en) * | 2023-09-13 | 2024-04-09 | 浙江华内电力科技有限公司 | Intelligent circuit breaker |
-
2024
- 2024-04-16 CN CN202410453815.9A patent/CN118053705B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204706525U (en) * | 2015-07-02 | 2015-10-14 | 浙江百事宝电器有限公司 | A kind of hydraulic-electromagnetic residual current circuit breaker |
| KR20200082129A (en) * | 2018-12-28 | 2020-07-08 | 강승오 | Disaster and disaster warning system using a composite sensor that can be used in stand-alone or in various electrical and electronic devices |
| CN114441949A (en) * | 2020-11-04 | 2022-05-06 | 厦门华电开关有限公司 | On-line monitoring device of circuit breaker and switch cabinet |
| CN113012998A (en) * | 2021-03-10 | 2021-06-22 | 北京中兆龙芯软件科技有限公司 | Intelligent internet-of-things type residual current operated circuit breaker |
| CN220753343U (en) * | 2023-09-13 | 2024-04-09 | 浙江华内电力科技有限公司 | Intelligent circuit breaker |
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| CN118053705B (en) | 2024-07-09 |
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