CN215641682U - Residual current operated circuit breaker performance detection device - Google Patents

Residual current operated circuit breaker performance detection device Download PDF

Info

Publication number
CN215641682U
CN215641682U CN202120452624.2U CN202120452624U CN215641682U CN 215641682 U CN215641682 U CN 215641682U CN 202120452624 U CN202120452624 U CN 202120452624U CN 215641682 U CN215641682 U CN 215641682U
Authority
CN
China
Prior art keywords
electrically connected
processor
module
circuit breaker
residual current
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.)
Active
Application number
CN202120452624.2U
Other languages
Chinese (zh)
Inventor
吴宇红
莫金龙
来骏
孙先山
蔡金明
罗莉
黄锋
纪涛
朱腾海
费继华
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Deqing Xindian Electric Power Construction Co ltd
Huzhou Power Supply Co of State Grid Zhejiang Electric Power Co Ltd
Deqing Power Supply Co of State Grid Zhejiang Electric Power Co Ltd
Original Assignee
Deqing Xindian Electric Power Construction Co ltd
Huzhou Power Supply Co of State Grid Zhejiang Electric Power Co Ltd
Deqing Power Supply Co of State Grid Zhejiang Electric Power Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Deqing Xindian Electric Power Construction Co ltd, Huzhou Power Supply Co of State Grid Zhejiang Electric Power Co Ltd, Deqing Power Supply Co of State Grid Zhejiang Electric Power Co Ltd filed Critical Deqing Xindian Electric Power Construction Co ltd
Priority to CN202120452624.2U priority Critical patent/CN215641682U/en
Application granted granted Critical
Publication of CN215641682U publication Critical patent/CN215641682U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y04INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04SSYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S10/00Systems supporting electrical power generation, transmission or distribution
    • Y04S10/20Systems supporting electrical power generation, transmission or distribution using protection elements, arrangements or systems

Abstract

The utility model discloses a performance detection device of a residual current operated circuit breaker, which belongs to the field of electric power and solves the problem of low operation sensitivity in the prior art, and the technical scheme for solving the problem is mainly that an intelligent control terminal comprises a mains supply module, a storage battery, a first communication module, a first processor, a first memory, a man-machine interaction module and a clock chip, wherein the first processor comprises a main processor and a coprocessor, the main processor is respectively and electrically connected with the first memory and the clock chip and respectively realizes bidirectional data transmission, the coprocessor is electrically connected with the main processor and realizes bidirectional data transmission, the coprocessor is electrically connected with the man-machine interaction module and is used for receiving or sending man-machine interaction information, and the first communication module is electrically connected with the coprocessor and realizes bidirectional data transmission. The utility model is mainly used for improving the action sensitivity.

Description

Residual current operated circuit breaker performance detection device
Technical Field
The utility model relates to the field of electric power, in particular to a performance detection device for a residual current operated circuit breaker.
Background
The classified arrangement of residual current operated protectors in rural low-voltage power networks is one of effective measures for reducing or preventing personal electric shock casualty accidents, and is also a technical measure for preventing electric fire and electric equipment damage caused by electric leakage. For many years, the popularization and application of the residual current operated protectors are all over the country, and the residual current operated protectors are used by families, enterprises and power supply enterprises, particularly intelligent residual current operated protectors installed by the power supply enterprises in recent years relieve more pressure on the power supply enterprises in operation and maintenance work. The detection of the action characteristic of the residual current action protector of the low-voltage power grid is the key work for the operation and maintenance of power distribution equipment of power supply enterprises, and the improvement of the action sensitivity of the performance detection device of the residual current action circuit breaker is the most effective defense technical measure for directly preventing personal electric shock casualty accidents.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a device for detecting the performance of a residual current operated circuit breaker, which improves the operation sensitivity.
In order to achieve the purpose, the utility model adopts the following technical scheme: the utility model provides a residual current operated circuit breaker performance detection device, female arranging including low-voltage distribution cabinet, intelligent control terminal, residual current operated circuit breaker, current transformer, the leakage protection device of trying to jump, grounding body and fuse, the N/A/B/C terminal of residual current operated circuit breaker upper end is connected with the female N/A/B/C terminal electricity that arranges of low-voltage distribution cabinet respectively, the N/A/B/C terminal of residual current operated circuit breaker lower extreme is connected through current transformer and fuse electricity, the N/A/B/C terminal of intelligent control terminal is connected with the N/A/B/C terminal electricity that the residual current operated circuit breaker upper end is connected respectively, intelligent control terminal is connected for the power supply of leakage protection device of trying to jump with the leakage protection device electricity, the N/A/B/C terminal of leakage protection device lower extreme respectively with the N of residual current operated circuit breaker lower extreme of trying to jump the power supply, the N/A/B/C terminal of leakage protection device lower extreme of leakage protection device of trying to jump is connected with the leakage protection device The A/B/C terminal is electrically connected and positioned at the upper stream of the current transformer, a grounding terminal of the leakage protection jump testing device is electrically connected with a grounding body, the intelligent control terminal, the leakage protection jump testing device and the residual current operated circuit breaker realize local communication through RS485, the intelligent control terminal comprises a mains supply module, a storage battery, a first communication module, a first processor, a first memory, a man-machine interaction module and a clock chip, the first processor comprises a main processor and a coprocessor, the main processor is electrically connected with the first memory and the clock chip respectively and realizes bidirectional data transmission, the coprocessor is electrically connected with the main processor and realizes bidirectional data transmission, the coprocessor is electrically connected with the man-machine interaction module and is used for receiving or sending man-machine interaction information, and the first communication module is electrically connected with the coprocessor and realizes bidirectional data transmission.
Further, the first communication module comprises an RS485 module, a GPRS module and a GSM module, the RS485 module is in communication connection with the leakage protection jump test device and the residual current operated circuit breaker respectively, the GPRS module is used for receiving or sending data through remote communication with the server, and the GSM module is used for receiving or sending short messages through communication with the mobile phone terminal.
Furthermore, the mains supply module comprises a direct current output circuit, a charging circuit and a power supply circuit, the direct current output circuit is electrically connected with a power input end of the leakage protection tripping test device to supply power, the charging circuit is electrically connected with the storage battery to charge the storage battery, the power supply circuit is electrically connected with the first processor to supply power, and the storage battery is electrically connected with the first processor and supplies power to the first processor after the mains supply module is powered off.
Further, the human-computer interaction module comprises a keyboard for inputting human-computer interaction information and a display for outputting the human-computer interaction information.
Furthermore, the leakage protection jump-testing device comprises a direct current power circuit, an RS485 communication module, a second processor, an impedance selection relay set and a phase selection relay set, the input end of the direct-current power supply circuit is electrically connected with the direct-current output circuit as the power supply input end of the leakage protection trial tripping device to supply power for the RS485 communication module, the RS485 communication module is connected with the first communication module for communication and data bidirectional transmission with the second processor, the input end of the three-phase four-wire power supply is electrically connected with the second processor through the voltage sampling circuit and transmits voltage data to the second processor, the current sampling circuit is electrically connected with the second processor and transmits current data to the second processor, the impedance selection relay group and the phase selection relay group are sequentially and electrically connected, and the output end of the phase selection relay group is electrically connected with a grounding body as the grounding terminal of the leakage protection trial tripping device.
Further, the input voltage of the direct current power supply circuit is 12V, and the direct current power supply circuit is connected to the RS485 communication module after being reduced to 3.3V.
After the technical scheme is adopted, the utility model has the following advantages: the intelligent control terminal adopts a dual-processor design consisting of a main processor and a coprocessor, the coprocessor is mainly responsible for data communication and comprises a first communication module, a second communication module, a third communication module, a fourth communication module, a fifth communication module, a sixth communication module, a fourth communication module, a fifth communication module, a sixth communication module and a fourth communication module, wherein the first communication module is used for receiving data pushed by a residual current operated circuit breaker and a leakage test tripping device and issuing control instructions, generating alarm information and temporarily storing various collected data; the main processor is responsible for decompressing, classifying, calculating and analyzing the received data packet, pushing the completed data to the first memory for storage, sorting and packaging according to a 900-second task list and reporting the data to the server, so that the execution speed of data sorting, calculating and judging programs of the intelligent control terminal can be increased, and the action sensitivity of the residual current operated circuit breaker performance detection device is improved; secondly, the requirements of rapidly acquiring data, receiving, analyzing and storing can be met; and thirdly, data temporary storage can be realized, and the loss of the acquired data is avoided.
Drawings
The utility model will be further described with reference to the accompanying drawings in which:
fig. 1 is a schematic circuit diagram of a residual current operated circuit breaker performance detection device according to the present invention;
FIG. 2 is a schematic diagram of the intelligent control terminal according to the present invention;
fig. 3 is a schematic diagram of the leakage protection jump test device according to the present invention.
Detailed Description
As shown in figure 1, the utility model provides a device for detecting the performance of a residual current operated circuit breaker, which comprises a low-voltage power distribution cabinet busbar 1, an intelligent control terminal 2, a residual current operated circuit breaker 3, a current transformer 4, a leakage protection test tripping device 5, a grounding body 6 and a fuse 7, wherein an N/A/B/C terminal at the upper end of the residual current operated circuit breaker 3 is respectively and electrically connected with an N/A/B/C terminal at the lower end of the residual current operated circuit breaker 3, the N/A/B/C terminal at the lower end of the residual current operated circuit breaker 3 is electrically connected with the fuse 7 through the current transformer 4, the N/A/B/C terminal at the intelligent control terminal 2 is respectively and electrically connected with the N/A/B/C terminal at the upper end of the residual current operated circuit breaker 3, the intelligent control terminal 2 is electrically connected with a power input end of the leakage protection test tripping device 5 to supply power to the leakage protection test tripping device 5, an N/A/B/C terminal at the lower end of the residual current device 5 is electrically connected with an N/A/B/C terminal at the lower end of a residual current operated circuit breaker 3 respectively and is positioned at the upstream of a current transformer 4, a grounding terminal of the residual current device 5 is electrically connected with a grounding body 6, the intelligent control terminal 2, the residual current operated circuit breaker 5 and the residual current operated circuit breaker 3 realize local communication through RS485, and in combination with the figure 2, the intelligent control terminal 2 comprises a mains supply module 21, a storage battery 22, a first communication module, a first processor, a first memory 26, a man-machine interaction module and a clock chip 28, the first processor comprises a main processor 241 and a coprocessor 242, the main processor 241 is electrically connected with the first memory 26 and the clock chip 28 respectively and realizes bidirectional data transmission, the coprocessor 242 is electrically connected with the main processor 241 and realizes bidirectional data transmission, the coprocessor 242 is electrically connected to the human-computer interaction module for receiving or sending human-computer interaction information, and the first communication module is electrically connected to the coprocessor 242 for implementing bidirectional data transmission.
In the utility model, the intelligent control terminal 2 adopts a dual-processor design consisting of a main processor 241 and a coprocessor 242, the coprocessor 242 is mainly responsible for data communication, and comprises a first communication module for receiving data pushed by a residual current operated circuit breaker 3 and a leakage test tripping device and issuing a control instruction, generating alarm information and reporting, temporarily storing various collected data and the like; the main processor 241 is responsible for decompressing, classifying, calculating and analyzing the received data packets, pushing the completed data to the first memory 26 for storage, sorting and packaging the data according to a 900-second task list and reporting the data to the server, so that the execution speed of the data sorting, calculating and judging program of the intelligent control terminal 2 can be increased, and the action sensitivity of the performance detection device of the residual current operated circuit breaker 3 can be improved; secondly, the requirements of rapidly acquiring data, receiving, analyzing and storing can be met; and thirdly, data temporary storage can be realized, and the loss of the acquired data is avoided.
In this embodiment, the first communication module includes an RS485, a GPRS module 231, and a GSM module 232, the RS485 is in communication connection with the leakage protection trial tripping device 5 and the residual current operated circuit breaker 3, the GPRS module 231 is used for receiving or sending data through remote communication with the server, and the GSM module 232 is used for receiving or sending a short message through communication with the mobile phone terminal. The GPRS module 231 is mainly responsible for reporting data normally acquired by the intelligent control terminal in 900 seconds, receiving various instructions of the server, and reporting real-time fault alarm information; the GSM module 232 is responsible for sending detection results of various power distribution equipment, short message alarm contents generated by sudden faults, and controlling or inquiring data of the intelligent control terminal 2 and the operation state of the power distribution equipment by using a remote editing short message; when the alarm information generated by the sudden failure occurs, the alarm information is transmitted synchronously in two directions through the GPRS module 231 and the GSM module 232, and the method has the following advantages: firstly, when the GPRS network is unstable, the transmitted emergency information is not lost; secondly, when a single communication module fails, the alarm information can be transmitted through another communication module; thirdly, different communication modules can be adopted for important data to obtain recheck; and fourthly, when the important command cannot be issued, switching the communication mode to transmit the command.
Because the intelligent control terminal 2 realizes local communication with the residual current operated circuit breaker 3 and the leakage protection jump-testing device 5 through RS485, the intelligent control terminal 2 finishes data acquisition of A/B/C phase voltage, A/B/C phase current, residual current and switching value of the residual current operated circuit breaker 3 every 2 seconds; the collected data is pushed to the server once every 900 seconds by the GPRS module 231. The communication fault diagnosis can be realized by the communication fault diagnosis method of the intelligent control terminal 2, which specifically comprises the following steps:
s1: starting a fault diagnosis program;
s2: communication fault judgment is carried out on the GPRS module 231 of the intelligent control terminal 2 by utilizing data uploading and server response information at an interval of 900 seconds, the response is normal, the GPRS module 231 is normal, otherwise, the coprocessor 242 generates 'XX public transformation XX terminal GPRS module suspected fault' short message content to be pushed to the GSM module 232 to be sent to operation and maintenance personnel;
s3: judging according to the A/B/C phase voltage, A/B/C phase current, residual current and the number of times of reporting the switching value data packet to the intelligent control terminal 2 reported by the residual current operated circuit breaker 3 every 2 seconds, if the number of times of acquiring data per hour is less than 9 or the number of times of acquiring data per day is less than 216, generating a short message content of the XX public transformer X residual current operated circuit breaker RS485 communication suspected connection loose fault by the coprocessor 242, and carrying out bidirectional transmission by the GPRS module 231 and the GSM module 232, and if the number of times of acquiring data within 6 hours is zero, generating the XX public transformer X residual current operated circuit breaker RS485 communication connection fault.
S4: at 4 and 12 days, the intelligent control terminal 2 retrieves the push records of the GSM module 232 in the first memory 26, if the short message records are sent from 15 days to 2 days, the fault diagnosis link of the GSM module 232 is skipped, otherwise, the process goes to S5.
S5: the main processor 241 of the intelligent control terminal 2 edits a GSM module fault diagnosis short message, the GSM module fault diagnosis short message is pushed to the GSM module 232 through the coprocessor 242 and is sent to the mobile phone of the 1 st reserved mobile phone number of the intelligent control terminal 2, and the mobile company short message automatic reply function is performed, if the intelligent control terminal 2 receives the reply short message of "1", it indicates that the GSM module 232 is normal, otherwise, the coprocessor 242 generates a "xxx public transformation xxx terminal GSM module fault" message, and pushes the xxx terminal GSM module fault message to the server fault alarm interface through the GPRS module 231.
S6: when the leakage protection test tripping device 5 does not receive a performance detection task pushed by the intelligent control terminal 2 to the residual current operated circuit breaker 3 or assist in fault diagnosis of the power distribution equipment, the communication port of the RS485 is in a dormant period, when 4 days and 12 days, if the performance detection task or the auxiliary fault diagnosis record occurs from 15 days to 2 days, the fault diagnosis of the RS485 communication port is terminated, otherwise, the main processor 241 generates an A/B/C phase voltage data instruction for calling the leakage protection test tripping device 5 and pushes the A/B/C phase voltage data instruction to the coprocessor 242, the coprocessor 242 pushes the A/B/C phase voltage data which activates the leakage protection test tripping device 5 through the RS485 communication port to acquire and report, then the intelligent control terminal 2 compares the internally acquired A/B/C phase voltage data, and the error of the two voltage data is normal for communication, if the reported data is not received or the data error is large, the coprocessor 242 generates the short message content of the suspected connection fault of the x public variable x number loss protection test tripping device RS485 communication, and the short message content is synchronously transmitted in two directions through the GPRS module 231 and the GSM module 232.
In order to ensure that the intelligent control terminal 2 and the leakage protection jump-testing device 5 can operate reliably for a long time, in this embodiment, the utility power supply module 21 includes a dc output circuit, a charging circuit and a power supply circuit, the dc output circuit is electrically connected with the power input end of the leakage protection jump-testing device 5 to supply power, the charging circuit is electrically connected with the storage battery 22 to charge the storage battery 22, the power supply circuit is electrically connected with the first processor to supply power, and the storage battery 22 is electrically connected with the first processor and supplies power to the first processor after the power failure of the utility power supply module 21.
The human-computer interaction module comprises a keyboard 271 for inputting human-computer interaction information and a display 272 for outputting human-computer interaction information.
Referring to fig. 3, the leakage protection trial tripping device 5 comprises a direct current power circuit 51, an RS485 communication module 52, a second processor 53, an impedance selection relay group 54, a phase selection relay group 55, a three-phase four-wire power input 56, a voltage sampling circuit 57 and a current sampling circuit 58, wherein the input end of the direct current power circuit 51 is electrically connected with the direct current output circuit as the power input end of the leakage protection trial tripping device 5 and supplies power to the RS485 communication module, the RS485 communication module is connected and communicated with the first communication module and bidirectionally transmits data with the second processor 53, the three-phase four-wire power input 56 is electrically connected with the second processor 53 through the voltage sampling circuit 57 and supplies voltage data to the second processor 53, the current sampling circuit 58 is electrically connected with the second processor 53 and supplies current data to the second processor 53, the impedance selection relay group 54 and the phase selection relay group 55 are electrically connected in turn, the output terminal of the phase selection relay group 55 is electrically connected to the ground body 6 as the ground terminal of the leakage protection trial tripping device 5.
The input voltage of the dc power circuit 51 is 12V, and is reduced to 3.3V and then connected to the RS485 communication module 52. When the residual current operated circuit breaker 3 is used for performance detection, the normal power supply of the residual current operated circuit breaker 3 is not influenced no matter before or after the residual current operated circuit breaker 3 acts.
Other embodiments of the present invention than the preferred embodiments described above, and those skilled in the art can make various changes and modifications according to the present invention without departing from the spirit of the present invention, should fall within the scope of the present invention defined in the claims.

Claims (6)

1. A performance detection device for a residual current operated circuit breaker comprises a low-voltage power distribution cabinet busbar, an intelligent control terminal, a residual current operated circuit breaker, a current transformer, a leakage protection jump-test device, a grounding body and a fuse, wherein an N/A/B/C terminal at the upper end of the residual current operated circuit breaker is electrically connected with an N/A/B/C terminal at the busbar of the low-voltage power distribution cabinet respectively, an N/A/B/C terminal at the lower end of the residual current operated circuit breaker is electrically connected with the fuse through the current transformer, an N/A/B/C terminal at the intelligent control terminal is electrically connected with an N/A/B/C terminal at the upper end of the residual current operated circuit breaker respectively, the intelligent control terminal is electrically connected with the leakage protection jump-test device to supply power for the leakage protection jump-test device, and the N/A/B/C terminal at the lower end of the leakage protection jump-test device is electrically connected with the N/A/B/C terminal at the lower end of the residual current operated circuit breaker respectively The A/B/C terminal is electrically connected and positioned at the upper stream of the current transformer, the grounding terminal of the leakage protection jump testing device is electrically connected with the grounding body, the intelligent control terminal is in local communication with the leakage protection jump testing device and the residual current operated circuit breaker through RS485, the intelligent control terminal is characterized by comprising a mains supply module, a storage battery, a first communication module, a first processor, a first memory, a man-machine interaction module and a clock chip, wherein the first processor comprises a main processor and a coprocessor, the main processor is respectively and electrically connected with the first memory and the clock chip and respectively realizes bidirectional data transmission, the coprocessor is electrically connected with the main processor and realizes bidirectional data transmission, the coprocessor is electrically connected with the man-machine interaction module and is used for receiving or sending man-machine interaction information, and the first communication module is electrically connected with the coprocessor and realizes bidirectional data transmission.
2. The device for detecting the performance of the residual current operated circuit breaker according to claim 1, wherein the first communication module comprises an RS485 module, a GPRS module and a GSM module, the RS485 module is respectively in communication connection with the residual current operated circuit breaker and the residual current operated circuit breaker, the GPRS module is used for receiving or sending data through remote communication with a server, and the GSM module is used for receiving or sending short messages through communication with a mobile phone terminal.
3. The device for detecting the performance of the residual current operated circuit breaker according to claim 1, wherein the mains power module comprises a dc output circuit, a charging circuit and a power supply circuit, the dc output circuit is electrically connected with the power input terminal of the leakage protection tripping device to supply power, the charging circuit is electrically connected with the storage battery to charge the storage battery, the power supply circuit is electrically connected with the first processor to supply power, and the storage battery is electrically connected with the first processor to supply power to the first processor after the power supply module is powered off.
4. The residual current operated circuit breaker performance detection device of claim 1, wherein the human-computer interaction module comprises a keyboard for inputting human-computer interaction information and a display for outputting human-computer interaction information.
5. The device for detecting the performance of the residual current operated circuit breaker according to claim 1, wherein the leakage protection trial tripping device comprises a dc power circuit, an RS485 communication module, a second processor, an impedance selection relay set, a phase selection relay set, a three-phase four-wire power input, a voltage sampling circuit and a current sampling circuit, wherein the input end of the dc power circuit is electrically connected with the dc output circuit as the power input end of the leakage protection trial tripping device to supply power to the RS485 communication module, the RS485 communication module is in communication with the first communication module and is used for bidirectionally transmitting data to the second processor, the three-phase four-wire power input is electrically connected with the second processor through the voltage sampling circuit and is used for transmitting voltage data to the second processor, the current sampling circuit is electrically connected with the second processor and is used for transmitting current data to the second processor, and the second processor, the impedance selection relay set and the impedance selection relay set, The phase selection relay groups are electrically connected in sequence, and the output end of the phase selection relay group is electrically connected with the grounding body as a grounding terminal of the leakage protection trial tripping device.
6. The device for detecting the performance of the residual current operated circuit breaker according to claim 5, wherein the input voltage of the direct current power supply circuit is 12V, and the input voltage is reduced to 3.3V and then is connected to the RS485 communication module.
CN202120452624.2U 2021-03-02 2021-03-02 Residual current operated circuit breaker performance detection device Active CN215641682U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202120452624.2U CN215641682U (en) 2021-03-02 2021-03-02 Residual current operated circuit breaker performance detection device

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202120452624.2U CN215641682U (en) 2021-03-02 2021-03-02 Residual current operated circuit breaker performance detection device
JP2021002872U JP3234333U (en) 2021-03-02 2021-07-26 Residual current operation circuit breaker function detector

Publications (1)

Publication Number Publication Date
CN215641682U true CN215641682U (en) 2022-01-25

Family

ID=77914869

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202120452624.2U Active CN215641682U (en) 2021-03-02 2021-03-02 Residual current operated circuit breaker performance detection device

Country Status (2)

Country Link
JP (1) JP3234333U (en)
CN (1) CN215641682U (en)

Also Published As

Publication number Publication date
JP3234333U (en) 2021-10-07

Similar Documents

Publication Publication Date Title
CN105093033A (en) Power grid multi-source information-based fault integrated analysis system and analysis method
CN202737576U (en) Intelligent measure-control apparatus used for low voltage power distribution network
CN109687590B (en) Grading outage and restoration reporting method and system
CN201478809U (en) Single-phase grounding line selection device for 20 kV power grid
CN104730397A (en) Interoperation test system and method between distribution automation terminals
CN210626591U (en) Intelligent alarm device for monitoring state of low-voltage distribution substation area
CN201893540U (en) Intelligent radio network dispatching digital-type boundary controller complete equipment
CN202978426U (en) Fault detection terminal based on power distribution automation
CN202333982U (en) Intelligent low-voltage electric-network leakage remote monitoring protecting device
CN215641682U (en) Residual current operated circuit breaker performance detection device
CN109599941A (en) A kind of distribute-electricity transformer district perception terminal device and method
CN204330940U (en) A kind of line fault monitoring system
CN105871645A (en) Automatic collecting and publishing device for grid fault information
CN201860040U (en) Intelligent distribution cabinet provided with grounding switch and integrating remote communication control and short message transmission
CN203423539U (en) Low-voltage power grid load and leak current integrated monitoring device
CN200950530Y (en) Switch multifunctional intelligent comprehensive protector
CN104333143A (en) Intelligent feeder terminal device for power distribution network fault detection
CN201860172U (en) Automatic looped network type distribution network based on reclosers
CN209088521U (en) Mutually protective device
CN201984117U (en) Capacitor group switching testing device
CN111398857A (en) Single-phase earth fault detection system of line selection device for arc suppression coil grounding system
CN201270385Y (en) Intelligent synthetic electric distribution box
CN113030715A (en) Residual current operated circuit breaker performance detection device and fault judgment method
CN207819457U (en) Intelligent network lotus control system
CN201066671Y (en) Monitoring residual current action protection relay

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant