CN113629981A - Distribution network automation debugging portable power supply device - Google Patents

Distribution network automation debugging portable power supply device Download PDF

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Publication number
CN113629981A
CN113629981A CN202110956440.4A CN202110956440A CN113629981A CN 113629981 A CN113629981 A CN 113629981A CN 202110956440 A CN202110956440 A CN 202110956440A CN 113629981 A CN113629981 A CN 113629981A
Authority
CN
China
Prior art keywords
power supply
supply device
debugging
distribution network
device body
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
Application number
CN202110956440.4A
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Chinese (zh)
Inventor
叶俊鸿
黄世昌
谢政威
曾宇辉
刘波江
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.)
Dongguan Power Supply Bureau of Guangdong Power Grid Co Ltd
Original Assignee
Dongguan Power Supply Bureau of Guangdong Power Grid 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 Dongguan Power Supply Bureau of Guangdong Power Grid Co Ltd filed Critical Dongguan Power Supply Bureau of Guangdong Power Grid Co Ltd
Priority to CN202110956440.4A priority Critical patent/CN113629981A/en
Publication of CN113629981A publication Critical patent/CN113629981A/en
Pending legal-status Critical Current

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    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02MAPPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00Details of apparatus for conversion
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R1/00Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
    • G01R1/28Provision in measuring instruments for reference values, e.g. standard voltage, standard waveform
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0042Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by the mechanical construction
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02MAPPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00Details of apparatus for conversion
    • H02M1/10Arrangements incorporating converting means for enabling loads to be operated at will from different kinds of power supplies, e.g. from ac or dc
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02MAPPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M7/00Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/003Constructional details, e.g. physical layout, assembly, wiring or busbar connections
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02MAPPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M7/00Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/02Conversion of ac power input into dc power output without possibility of reversal

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Distribution Board (AREA)

Abstract

The invention discloses a portable power supply device for automatic debugging of a distribution network, which relates to the field of electric distribution network debugging and comprises a power supply device body, wherein a first input power supply point is arranged on the front surface of the power supply device body, a second input power supply point is arranged on the front surface of the power supply device body, a third input power supply point is arranged on the front surface of the power supply device body, an operation board is arranged in the power supply device body, and a first power supply receiving block is arranged at the upper end of the operation board. When the debugging module is used, a power distribution network to be debugged is connected to the debugging detection block, the first power point, the second power point and the third power point which are suitable are selected through the power points with different specifications for power connection, and the power currents of the first receiving power block, the second receiving power block and the third power receiving block are properly converted into direct current and alternating current through the rectifier, so that the power consumption of each part in the debugging process is reduced, and the service life of the debugging module part is prolonged.

Description

Distribution network automation debugging portable power supply device
Technical Field
The invention relates to the field of electric distribution network debugging, in particular to a portable power supply device for distribution network automatic debugging.
Background
The distribution network is the part that breaks down most easily among the electric power system, especially develops the distribution automation construction after, and present on-the-spot debugging overhauls equipment involves the debugging test of multiple equipment, especially at present distribution automation terminal more needs to debug and overhaul it.
The distribution network has the application in many places, and is also comparatively difficult to the distribution network debugging in some places that the environment is not good, so need a distribution network automation debugging portable power supply unit to make things convenient for the debugging to the distribution network, do not need the more manpower of loss to remove power supply unit.
The portable power supply device for automatic debugging of the distribution network at present only adopts a direct current or alternating current transmission debugging mode, the power consumption in the debugging and running process of the power supply device is increased, the power supply device is easy to receive damage, the service life of the power supply device is shortened, the power supply device is difficult to move in a severe environment, the power supply device cannot be debugged when the power supply is not stored enough in the debugging process, the power supply point is single and cannot be suitable for power supply point of various specifications to carry out power debugging and transmission, and the power supply point cannot be protected and is easy to have poor contact at the power supply point.
Disclosure of Invention
Based on this, the invention aims to provide a portable power supply device for automatic debugging of a distribution network, so as to solve the technical problems that the conventional portable power supply device for automatic debugging of the distribution network only adopts a direct current or alternating current transmission debugging mode, the power consumption of the power supply device in the debugging and running process is increased, the power supply device is easy to damage, the service life of the power supply device is shortened, the power supply device is difficult to move in a severe environment, the power supply device cannot be debugged when the power supply is not stored enough in the debugging process, a single power supply point cannot be suitable for power supply debugging and transmission of power supply points of various specifications, and the power supply point cannot be protected, and poor contact at the power supply point is easy to occur.
In order to achieve the purpose, the invention provides the following technical scheme: a portable power supply device for automatic debugging of a distribution network comprises a power supply device body, wherein a first input power supply point is arranged on the front surface of the power supply device body, a second input power supply point is arranged on the front surface of the power supply device body, a third input power supply point is arranged on the front surface of the power supply device body, an operation plate is arranged in the power supply device body, a first power supply receiving block is arranged at the upper end of the operation plate, a second power supply receiving block is arranged at one side of the first power supply receiving block, a third power supply receiving block is arranged at one side of the second power supply receiving block, a control plate is arranged at the upper end of the operation plate, a power supply transmission block is arranged at the upper end of the control plate, a signal generator is arranged at the upper end of the operation plate, a debugging detection block is arranged at one side of the signal generator, and a real-time display is arranged on the front surface of the power supply device body, and the control panel is in signal connection with the real-time display.
By adopting the technical scheme, the installed first input power supply point, the second input power supply point and the third input power supply point are conveniently connected with power supply points with different specifications, and a plurality of debugging parts are controlled by only being electrically connected with one control board by debugging a plurality of power transmission blocks integrated on one control board, so that the miniaturization of the installation of the debugging parts in the power supply device is realized.
The invention is further set up in that an adjusting button is arranged on the front surface of the real-time display, a numerical display screen is arranged on the front surface of the real-time display, a signal display screen is arranged on one side of the signal generator, and a signal state lamp is arranged on one side of the signal generator.
Through adopting above-mentioned technical scheme, the adjustment button of installation carries out the adjustment of debugging numerical value to real-time display, and numerical value display screen makes things convenient for debugging personnel to observe the numerical value change and the result in the debugging process in real time, and the debugging state that can show signal generator in real time of signal display screen and signal state makes things convenient for in time to its maintenance when signal generator breaks down.
The invention is further arranged in such a way that a through groove is formed in the front surface of the power supply device body, a protection frame is slidably arranged in the through groove, a pull ring is arranged on one side of the protection frame, sealing rings are arranged on the inner wall of the protection frame, and the number of the protection frames is three.
Through adopting above-mentioned technical scheme, the bearer bar of installation protects power supply point department, and the sealing washer avoids leading to appearing contact failure in the rainwater infiltration power supply point, influences the distribution network debugging.
The invention is further arranged in that a rectifier is arranged at the upper end of the first power supply receiving block, a large-capacity storage battery is arranged on the upper surface of the rectifier, a charging port is formed in one side of the rectifier, and the number of the charging ports is one group.
By adopting the technical scheme, the installed rectifier realizes the conversion of direct current and alternating current, reduces the power consumption of each part in the debugging process, prolongs the service life of the debugging module part, realizes the power supply for debugging the power supply device body by the arranged charging port, and avoids the interruption caused by insufficient power supply in the debugging process, so that the power supply device body cannot debug the power distribution network and the debugging working efficiency is influenced.
The invention is further provided that the rear surface of the power supply device body is provided with a fan groove, and a fan is arranged in the fan groove.
Through adopting above-mentioned technical scheme, the fan of installation dispels the heat to its debugging module when the internal debugging module of power supply unit uses for a long time and produces high heat, avoids debugging module high temperature to cause the circuit firing, causes the damage to the power supply unit body.
The portable electric power tool is further provided with two groups of movable wheels arranged at the bottom end of the power supply device body, a hinged mounting block is arranged on one side of the power supply device body, and a hand-held rod is arranged on one side of the hinged mounting block.
Through adopting above-mentioned technical scheme, the removal wheel of installation is convenient to be removed the power supply unit body in the highway section of unstability, provides the reliability of removal, and the portable pole is convenient to be lifted the power supply unit body and is removed and go out to carry, improves the convenience of device.
The invention is further provided that the front surface of the power supply device body is provided with display installation connecting grooves, and the number of the power supply transmission blocks is three.
Through adopting above-mentioned technical scheme, the power transmission piece of installation can transmit the power signal of different specifications, avoids power signal transmission to appear the confusion, causes the inaccuracy of debugging result, and display installation spread groove is convenient installs real-time display, guarantees real-time display erection joint's stability.
In summary, the invention mainly has the following beneficial effects:
1. the invention realizes the conversion of direct current and alternating current through the installed rectifier, reduces the power consumption of each part in the debugging process, prolongs the service life of the debugging module part, integrates a plurality of power transmission blocks into one control panel to ensure that a plurality of debugging parts are electrically connected and controlled by one control panel, realizes the miniaturization of the installation of the debugging parts in the power supply device body, and is convenient to push and carry the power supply device by using the portable rod in a severe environment.
2. According to the invention, the power supply for debugging the power supply device body is realized through the installed large-capacity storage battery and the arranged charging port, the power supply device body is prevented from being disconnected due to insufficient power supply in the debugging process, the power supply device body cannot debug the power distribution network, the debugging working efficiency is influenced, a plurality of power supply points are installed, the power supply points can be conveniently connected and debugged with the power supply points with different specifications, the installed protection frame protects the power supply points, and the power distribution network debugging is prevented from being influenced due to poor contact of the power supply point connection.
Drawings
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is a schematic view of the construction of the running plate of the present invention;
FIG. 3 is a schematic view of the back surface structure of the present invention;
fig. 4 is a schematic view of the front surface structure of the present invention.
In the figure: 1. a power supply device body; 2. a real-time display; 3. an adjustment button; 4. a numerical value display screen; 5. a moving wheel; 6. a first input power supply point; 7. a second input power supply point; 8. a third input power supply point; 9. a protective frame; 10. a seal ring; 11. a pull ring; 12. a running plate; 13. a first reception power supply block; 14. a second reception power supply block; 15. a third receive power supply block; 16. a rectifier; 17. a large-capacity storage battery; 18. a charging port; 19. a control panel; 20. a power transmission block; 21. a signal generator; 22. a signal display screen; 23. a signal status light; 24. debugging a detection block; 25. a fan groove; 26. a fan; 27. a hinged mounting block; 28. a hand-held lever; 29. a through groove; 30. the display mounting connection slot.
Detailed Description
The technical solution 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. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
The following describes an embodiment of the present invention based on its overall structure.
A portable power supply device for automatic debugging of a distribution network comprises a power supply device body 1, wherein a first input power supply point 6 is arranged on the front surface of the power supply device body 1, a second input power supply point 7 is arranged on the front surface of the power supply device body 1, a third input power supply point 8 is arranged on the front surface of the power supply device body 1, an operation plate 12 is arranged in the power supply device body 1, a first power supply receiving block 13 is arranged at the upper end of the operation plate 12, a second power supply receiving block 14 is arranged at one side of the first power supply receiving block 13, a third power supply receiving block 15 is arranged at one side of the second power supply receiving block 14, a control plate 19 is arranged at the upper end of the operation plate 12, a power supply transmission block 20 is arranged at the upper end of the control plate 19, a signal generator 21 is arranged at the upper end of the operation plate 12, a debugging detection block 24 is arranged at one side of the signal generator 21, a real-time display 2 is arranged on the front surface of the power supply device body 1, the control panel 19 is in signal connection with the real-time display 2, the installed first input power supply point 6, the second input power supply point 7 and the third input power supply point 8 are conveniently connected with power supply points with different specifications, a plurality of debugging parts are controlled by only one control panel 19 through the integration of a plurality of power supply transmission blocks 20 on one control panel 19, and the installation miniaturization of the debugging parts in the power supply device body 1 is realized.
Please refer to fig. 1, an adjusting button 3 is installed on the front surface of the real-time display 2, a numerical display 4 is installed on the front surface of the real-time display 2, a signal display 22 is installed on one side of the signal generator 21, a signal status lamp 23 is installed on one side of the signal generator 21, the adjusting button 3 is installed to adjust the debugging numerical value of the real-time display 2, the numerical display 4 facilitates the debugging personnel to observe the numerical value change and result in the debugging process in real time, the signal display 22 and the signal status lamp 23 can display the debugging status of the signal generator 21 in real time, and the signal generator 21 can be maintained in time when in fault.
Referring to fig. 1 and 4, a through groove 29 is formed in the front surface of the power supply device body 1, the protection frame 9 is slidably mounted inside the through groove 29, a pull ring 11 is mounted on one side of the protection frame 9, the sealing ring 10 is mounted on the inner wall of the protection frame 9, the number of the protection frames 9 is three, the protection frame 9 is mounted to protect a power supply point, and the sealing ring 10 prevents rainwater from permeating into the power supply point to cause poor contact and affect the debugging of the power distribution network.
Referring to fig. 2, a rectifier 16 is installed at the upper end of the first power receiving block 13, a large-capacity storage battery 17 is installed on the upper surface of the rectifier 16, a charging port 18 is formed in one side of the rectifier 16, the number of the charging ports 18 is one group, the installed rectifier 16 realizes conversion of direct current and alternating current, power consumption of each part in a debugging process is reduced, service lives of parts of a debugging module are prolonged, the formed charging port 18 realizes power supply for debugging the power supply device body 1, and the problem that the power supply device body 1 cannot debug a power distribution network due to insufficient interruption of power in the debugging process is avoided, and working efficiency of debugging is affected.
Referring to fig. 3, a fan groove 25 is formed in the rear surface of the power supply device body 1, a fan 26 is installed inside the fan groove 25, and the installed fan 26 dissipates heat of the debugging module when the debugging module inside the power supply device body 1 is used for a long time to generate high heat, so as to avoid circuit burning caused by over-high temperature of the debugging module and damage to the power supply device body 1.
Referring to fig. 1 and 3, the bottom end of the power supply device body 1 is provided with two sets of moving wheels 5, one side of the power supply device body 1 is provided with a hinged mounting block 27, one side of the hinged mounting block 27 is provided with a handle bar 28, the mounted moving wheels 5 facilitate the power supply device body 1 to move on an unstable road section, so that the moving reliability is provided, the handle bar 28 facilitates the power supply device body 1 to be lifted up for moving and carrying, and the convenience of the device is improved.
Referring to fig. 2 and 4, the display mounting connecting groove 30 is formed in the front surface of the power supply device body 1, the number of the power supply transmission blocks 20 is three, the mounted power supply transmission blocks 20 can transmit power supply signals of different specifications, so that the problem that the debugging result is inaccurate due to disorder in power supply signal transmission is avoided, the display mounting connecting groove 30 is convenient for mounting the real-time display 2, and the stability of mounting and connecting the real-time display 2 is ensured.
The working principle of the invention is as follows: when in use, the power distribution network to be debugged is accessed to the debugging detection block 24, the power points with different specifications select the proper first power point 6, second power point 7 and third power point 8 for power access, the rectifier 16 is used for properly converting the power supply currents of the first receiving power block 13, the second receiving power block 14 and the third power receiving block 15 into direct current and alternating current, the power consumption of each part in the debugging process is reduced, the service life of the debugging module part is prolonged, the converted current transmits the debugging current structure to the signal generator 21 through the control panel 19 and the power transmission block 20, the debugging result of the power distribution network is displayed through the signal display screen 22 and the signal display lamp 23, the information in the debugging process is transmitted to the real-time display 2 through the control panel 19, so that the debugging personnel can conveniently know the debugging information of the power distribution network in real time in the debugging process, and the debugging accuracy is improved, when the power is not enough, the charging port 18 through the installation supplies power to the large-capacity storage battery 17, so that debugging interruption caused by insufficient power is avoided, debugging efficiency is prevented from being influenced, power access of an input power point is protected through the protection frame installed at the power point, and the phenomenon that the access line is too much and winding is caused to cause poor contact and influence the accuracy of a debugging result is avoided.
Although embodiments of the present invention have been shown and described, it is intended that the present invention should not be limited thereto, that the particular features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples, and that modifications, substitutions, variations or the like, which are not inventive and may be made by those skilled in the art without departing from the principle and spirit of the present invention and without departing from the scope of the claims.

Claims (10)

1. The utility model provides a distribution network automation debugs portable power supply unit, includes the power supply unit body (1), its characterized in that: the front surface of the power supply device body (1) is provided with a first input power supply point (6), the front surface of the power supply device body (1) is provided with a second input power supply point (7), the front surface of the power supply device body (1) is provided with a third input power supply point (8), the power supply device body (1) is internally provided with an operation plate (12), the upper end of the operation plate (12) is provided with a first power supply receiving block (13), one side of the first power supply receiving block (13) is provided with a second power supply receiving block (14), one side of the second power supply receiving block (14) is provided with a third power supply receiving block (15), the upper end of the operation plate (12) is provided with a control plate (19), the upper end of the control plate (19) is provided with a power supply transmission block (20), and the upper end of the operation plate (12) is provided with a signal generator (21), debugging detection piece (24) are installed to one side of signal generator (21), the front surface mounting of power supply unit body (1) has real-time display (2), control panel (19) and real-time display (2) signal connection.
2. The distribution network automation debugging portable power supply device of claim 1, characterized in that: the utility model discloses a signal display device, including real-time display (2), the preceding surface mounting of real-time display (2) has adjustment button (3), the preceding surface mounting of real-time display (2) has numerical value display screen (4), signal display screen (22) are installed to one side of signal generator (21), signal status lamp (23) are installed to one side of signal generator (21).
3. The distribution network automation debugging portable power supply device of claim 1, characterized in that: a through groove (29) is formed in the front surface of the power supply device body (1), and a protection frame (9) is slidably mounted inside the through groove (29).
4. The distribution network automation debugging portable power supply device of claim 3, characterized in that: pull ring (11) are installed to one side of bearer bar (9), sealing washer (10) are installed to the inner wall of bearer bar (9), the quantity of bearer bar (9) has three.
5. The distribution network automation debugging portable power supply device of claim 1, characterized in that: a rectifier (16) is mounted at the upper end of the first power receiving block (13).
6. The distribution network automation debugging portable power supply device of claim 5, characterized in that: the high-capacity storage battery (17) is mounted on the upper surface of the rectifier (16), a charging port (18) is formed in one side of the rectifier (16), and the number of the charging ports (18) is one.
7. The distribution network automation debugging portable power supply device of claim 1, characterized in that: the rear surface of the power supply device body (1) is provided with a fan groove (25), and a fan (26) is arranged in the fan groove (25).
8. The distribution network automation debugging portable power supply device of claim 1, characterized in that: the bottom of the power supply device body (1) is provided with moving wheels (5), and the number of the moving wheels (5) is two.
9. The distribution network automation debugging portable power supply device of claim 1, characterized in that: articulated installation piece (27) is installed to one side of the power supply unit body (1), portable pole (28) is installed to one side of articulated installation piece (27).
10. The distribution network automation debugging portable power supply device of claim 1, characterized in that: the front surface of the power supply device body (1) is provided with display installation connecting grooves (30), and the number of the power supply transmission blocks (20) is three.
CN202110956440.4A 2021-08-19 2021-08-19 Distribution network automation debugging portable power supply device Pending CN113629981A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110956440.4A CN113629981A (en) 2021-08-19 2021-08-19 Distribution network automation debugging portable power supply device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110956440.4A CN113629981A (en) 2021-08-19 2021-08-19 Distribution network automation debugging portable power supply device

Publications (1)

Publication Number Publication Date
CN113629981A true CN113629981A (en) 2021-11-09

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ID=78386797

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Application Number Title Priority Date Filing Date
CN202110956440.4A Pending CN113629981A (en) 2021-08-19 2021-08-19 Distribution network automation debugging portable power supply device

Country Status (1)

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CN (1) CN113629981A (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202009329U (en) * 2011-03-04 2011-10-12 上海梅山钢铁股份有限公司 Power adaptor for equipment debugging on site
CN206178056U (en) * 2016-10-21 2017-05-17 国网江苏省电力公司扬州供电公司 Distribution automation debugging equipment that does not have a power failure
CN210626576U (en) * 2019-07-30 2020-05-26 遵义新瑞电力工程有限公司 Electric power safety operation monitoring alarm device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202009329U (en) * 2011-03-04 2011-10-12 上海梅山钢铁股份有限公司 Power adaptor for equipment debugging on site
CN206178056U (en) * 2016-10-21 2017-05-17 国网江苏省电力公司扬州供电公司 Distribution automation debugging equipment that does not have a power failure
CN210626576U (en) * 2019-07-30 2020-05-26 遵义新瑞电力工程有限公司 Electric power safety operation monitoring alarm device

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