CN109975599B - Multifunctional electricity test pen for power distribution of power grid - Google Patents
Multifunctional electricity test pen for power distribution of power grid Download PDFInfo
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- CN109975599B CN109975599B CN201910369787.1A CN201910369787A CN109975599B CN 109975599 B CN109975599 B CN 109975599B CN 201910369787 A CN201910369787 A CN 201910369787A CN 109975599 B CN109975599 B CN 109975599B
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- checking
- pen
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- 230000005611 electricity Effects 0.000 title claims abstract description 22
- 238000012360 testing method Methods 0.000 title claims abstract description 9
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims description 8
- 235000017491 Bambusa tulda Nutrition 0.000 claims description 8
- 241001330002 Bambuseae Species 0.000 claims description 8
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 8
- 239000011425 bamboo Substances 0.000 claims description 8
- 238000007789 sealing Methods 0.000 claims description 3
- 238000007689 inspection Methods 0.000 abstract description 5
- 238000000034 method Methods 0.000 description 8
- 238000004364 calculation method Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 239000011159 matrix material Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/04—Housings; Supporting members; Arrangements of terminals
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/04—Housings; Supporting members; Arrangements of terminals
- G01R1/0408—Test fixtures or contact fields; Connectors or connecting adaptors; Test clips; Test sockets
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/145—Indicating the presence of current or voltage
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/08—Locating faults in cables, transmission lines, or networks
- G01R31/081—Locating faults in cables, transmission lines, or networks according to type of conductors
- G01R31/085—Locating faults in cables, transmission lines, or networks according to type of conductors in power transmission or distribution lines, e.g. overhead
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/08—Locating faults in cables, transmission lines, or networks
- G01R31/081—Locating faults in cables, transmission lines, or networks according to type of conductors
- G01R31/086—Locating faults in cables, transmission lines, or networks according to type of conductors in power transmission or distribution networks, i.e. with interconnected conductors
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Mechanisms For Operating Contacts (AREA)
- Measurement Of Current Or Voltage (AREA)
Abstract
The invention discloses a multifunctional electricity-testing pen for power distribution of an electric network, which comprises a carrying cylinder and a shell, wherein the surface of the shell is connected with a circular plate in a sliding manner, the top and the bottom of the surface of the circular plate are both movably connected with a transverse plate, the top and the bottom of one side of the circular plate are both fixedly connected with a fixed plate, one side of the transverse plate is fixedly connected with an inclined plate, a first spring is fixedly connected between one side of the inclined plate opposite to the fixed plate, the other side of the transverse plate is fixedly connected with an arc plate, and the top and the bottom between two sides of the inner wall of the shell are both rotatably connected with threaded rods. This multi-functional electric wire netting electricity distribution is with checking electric pen has the diaphragm through the equal swing joint in top and bottom on ring board surface, avoids maintainer's hand to touch the pen-holder of checking electric pen, avoids taking place the condition of electric shock, has certain guarantee to maintainer's safety, can directly hook whole device on the cable that needs to carry out the inspection.
Description
Technical Field
The invention relates to the technical field of electroscope, in particular to an electroscope for power distribution of a multifunctional power grid.
Background
The distribution network is composed of overhead lines, cables, towers, distribution transformers, isolating switches, reactive compensators, a plurality of auxiliary facilities and the like, plays a role in distributing electric energy in the power network, the topology analysis of the distribution network is a topology diagram combining lines and points according to the connection relation of distribution electric elements, then the topology connection analysis of the whole network is carried out according to power supply nodes, switching nodes and the like, the topology analysis is a basis for state estimation, tide calculation, fault location, isolation, power supply restoration, network reconstruction and other analysis of the distribution network, the structure of the distribution network is huge and complex, the network structure is changed frequently due to the opening and closing of the switches in fault or load transfer operation, the network topology calculation needs to be further improved as a basis for the analysis of the distribution network, so that a good network topology algorithm is needed to be urgently needed, the good network topology algorithm is effective and visual, the requirements of different-level functions in distribution network automation can be met, the quick tracking and identification of the connectivity of the distribution network can be realized, the event change is adapted, the time of storage space and other advanced calculation functions is saved, the current high-level calculation method is well known, the current high-level voltage matrix method, the correlation matrix method, the voltage matrix method can be used for carrying a high-level electrical equipment is used for the user to test and the user, and the user can be well known about the current voltage test method, and the user is used for carrying a user is well, and has a user.
When an electric network distribution is performed on electricity inspection operation, an maintainer sometimes touches a pen holder of the electricity inspection pen easily because the length of the electricity inspection pen is short, electric shock danger is caused, the safety of the maintainer cannot be guaranteed, and the electricity inspection pen is inconvenient to carry before use, so that inconvenience of the maintainer is caused.
Disclosure of Invention
(one) solving the technical problems
Aiming at the defects of the prior art, the invention provides the multifunctional electricity-checking pen for power distribution of the power grid, which solves the problems that sometimes, because the length of the electricity-checking pen is shorter, the pen holder of the electricity-checking pen is easy to touch and touch, the electric shock danger is caused, the safety of an maintainer cannot be ensured, and the electricity-checking pen is inconvenient to carry before use, so that the maintainer is inconvenient.
(II) technical scheme
In order to achieve the above purpose, the invention is realized by the following technical scheme: the utility model provides a multifunctional electricity network electricity distribution is with checking pencil, includes carries section of thick bamboo and shell, the surface sliding connection of shell has the ring board, the equal swing joint in top and bottom on ring board surface has the diaphragm to the equal fixedly connected with fixed plate in top and bottom on ring board one side, one side fixedly connected with swash plate of diaphragm to fixedly connected with first spring between one side that swash plate is relative with the fixed plate, the opposite side fixedly connected with arc of diaphragm to the top and the equal rotation of bottom between the shell inner wall both sides are connected with the threaded rod, the inside fixedly connected with motor of shell, the one end fixedly connected with first gear of motor output shaft, and the equal fixedly connected with second gear of one side on two threaded rod surfaces, two equal threaded connection in surface has the slider, and fixedly connected with checking pencil between two opposite sides of threaded rod, one side of checking pencil runs through the shell and extends to the outside of shell.
Preferably, two opposite sides of the arc plates are fixedly connected with anti-skid lugs, and one sides of the two inclined plates, which are away from each other, are provided with anti-skid patterns.
Preferably, two opposite sides of the transverse plates are fixedly connected with sliding rails, the top and the bottom of the surface of the shell are fixedly connected with movable blocks, and one side of each movable block is in sliding connection with one side of each sliding rail.
Preferably, the front and the back of shell surface all fixedly connected with fixed shell to one side swing joint of fixed shell has the fixture block, the fixture block extends to the inside one side fixedly connected with dog of fixed shell, and fixedly connected with second spring between the bottom of dog and the bottom of fixed shell inner wall.
Preferably, one side of the clamping block penetrates through the annular plate and extends to the outside of the annular plate, and clamping grooves matched with the clamping block are formed in two sides of the surface of the annular plate.
Preferably, one side of the test pencil is fixedly connected with a wire, and the surface of the shell is fixedly connected with an indicator lamp, and the wire is electrically connected with the indicator lamp.
Preferably, the surface cover of shell is equipped with the antiskid cover to one side that the shell kept away from the antiskid cover fixedly connected with handle, one side fixedly connected with switch of handle.
Preferably, the surface of the carrying cylinder is provided with a binding belt, and the top of the carrying cylinder is movably connected with a sealing cover.
(III) beneficial effects
The invention provides a multifunctional electricity test pen for power distribution of a power grid. Compared with the prior art, the method has the following beneficial effects:
(1) This multi-functional electric wire netting electricity distribution is with checking pencil, the equal swing joint in top and bottom through ring board surface has the diaphragm, and the equal fixedly connected with fixed plate in top and bottom of ring board one side, one side fixedly connected with swash plate of diaphragm, and fixedly connected with first spring between one side opposite to swash plate and the fixed plate, the opposite side fixedly connected with arc of diaphragm, and the top and the bottom between the shell inner wall both sides all rotate and be connected with the threaded rod, the inside fixedly connected with motor of shell, the one end fixedly connected with first gear of motor output shaft, and the equal fixedly connected with of one side on two threaded rod surfaces has the second gear that first gear meshes, the equal threaded connection in surface of two threaded rods has the slider, and fixedly connected with checks pencil between one side that two sliders are relative, one side of checking pencil runs through the shell and extends to the outside of shell, can adjust checking pencil's length, avoid the hand of maintainer to touch the pen-holder of checking pencil, avoid the condition of taking place, there is certain guarantee to personnel's safety.
(2) This multifunctional power grid electricity distribution is with checking pencil, opposite side fixedly connected with arc through the diaphragm, and the top between the shell inner wall both sides is all rotated with the bottom and is connected with the threaded rod, the inside fixedly connected with motor of shell, the one end fixedly connected with first gear of motor output shaft, and the second gear that the one side of two threaded rod surfaces all fixedly connected with first gear engaged with, the equal threaded connection of surface of two threaded rods has the slider, and fixedly connected with check pencil between two slider opposite sides, check pencil's one side runs through the shell and extends to the outside of shell, the equal fixedly connected with skid proof block of one side that two arc are opposite, and one side that two inclined plates deviate from mutually all is provided with the skid proof line, through the arc that can adjust, can directly hook whole device on the cable that needs to inspect, more convenience has been brought for maintainer.
(3) This multifunctional power grid electricity distribution is with checking electrography, there is the ring board through the surface sliding connection of shell, the equal swing joint in top and bottom on ring board surface has the diaphragm, and the equal fixedly connected with fixed plate in top and bottom of ring board one side, one side fixedly connected with swash plate of diaphragm, and fixedly connected with first spring between one side that swash plate is relative with the fixed plate, the opposite side fixedly connected with arc of diaphragm, the surface of carrying a section of thick bamboo is provided with the bandage, and the top swing joint of carrying a section of thick bamboo has sealed lid, conveniently accomodate checking electrography, conveniently carry checking electrography, the convenience of using has been improved.
Drawings
FIG. 1 is a perspective view of a carrying cylinder structure of the present invention;
FIG. 2 is a perspective view of the structure of the present invention;
FIG. 3 is a front view of the structure of the present invention;
FIG. 4 is a cross-sectional view of a stationary housing structure of the present invention;
FIG. 5 is a perspective view of the annular plate structure of the present invention;
fig. 6 is a cross-sectional view of the structure of the present invention.
In the figure, 1 carries section of thick bamboo, 2 shells, 3 ring plate, 4 diaphragm, 5 fixed plates, 6 swash plate, 7 first springs, 8 arc, 9 threaded rod, 10 motor, 11 first gear, 12 second gear, 13 sliders, 14 electroscope, 15 antiskid lug, 16 anti-skidding line, 17 slide rail, 18 movable block, 19 fixed shell, 20 fixture block, 21 dog, 22 second springs, 23 draw-in groove, 24 wires, 25 pilot lamp, 26 antiskid cover, 27 handles, 28 switch, 29 bandage, 30 sealed lid.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-6, the embodiment of the present invention provides a technical solution: the utility model provides a multifunctional electricity network electricity distribution is with checking pencil, including carrying section of thick bamboo 1 and shell 2, shell 2 is insulating material and makes, the logical groove with checking pencil 14 looks adaptation is seted up to one side of shell 2, conveniently check pencil 14 moves, when needs are accomodate, whole checking pencil 14 can all receive in the inside of shell 2, can directly accomodate shell 2 in the inside of carrying section of thick bamboo 1, conveniently carry checking pencil 14, simultaneously also be a protection to checking pencil 14, conveniently accomodate checking pencil 14, conveniently carry checking pencil 14, the convenience of using has been improved, the front on shell 2 surface and the equal fixedly connected with fixed shell 19 in back, one side of fixed shell 19 is provided with 7, can adjust the position that ring plate 3 is different, satisfy different work needs, and one side swing joint of fixed shell 19 has fixture block 20, one side of the clamping block 20 penetrates through the annular plate 3 and extends to the outside of the annular plate 3, clamping grooves 23 matched with the clamping block 20 are formed in two sides of the surface of the annular plate 3, one side of the clamping block 20 extending to the inside of the fixed shell 19 is fixedly connected with a stop block 21, a second spring 22 is fixedly connected between the bottom of the stop block 21 and the bottom of the inner wall of the fixed shell 19, the surface of the shell 2 is slidably connected with the annular plate 3, an anti-slip sleeve 26 is sleeved on the surface of the shell 2, the anti-slip sleeve 26 is a handheld position for a maintainer, an anti-slip effect can be achieved, the maintainer is also protected, one side of the shell 2 away from the anti-slip sleeve is fixedly connected with a handle 27, one side of the handle 27 is fixedly connected with a switch 28, the surface of the carrying cylinder 1 is provided with a binding band 29, the binding band 29 has elasticity and can be bound on a trouser belt, and can also be bound on other tools, the practicability is improved, the top of the carrying cylinder 1 is movably connected with a sealing cover 30, the top and the bottom of the surface of the circular plate 3 are movably connected with a transverse plate 4, one side of the surface of the outer shell 2, which is opposite to the transverse plates 4, is fixedly connected with a sliding rail 17, the top and the bottom of the surface of the outer shell 2 are fixedly connected with a movable block 18, one side of the movable block 18 is slidably connected with one side of the sliding rail 17, the top and the bottom of one side of the circular plate 3 are fixedly connected with a fixed plate 5, one side of the transverse plate 4 is fixedly connected with a sloping plate 6, one side of the sloping plate 6, which is opposite to the fixed plate 5, is fixedly connected with a first spring 7, the other side of the transverse plate 4 is fixedly connected with an arc plate 8, the whole device can be directly hooked on a cable to be tested through the adjustable arc plate 8, thereby bringing more convenience to maintenance personnel, one side of the two arc plates 8 is fixedly connected with a skid proof bump 15, the two inclined plates 6 are provided with anti-skid lines 16 on one side facing away, the top and the bottom between the two sides of the inner wall of the shell 2 are respectively and rotatably connected with a threaded rod 9, a motor 10 is fixedly connected in the shell 2, the motor 10 is a servo motor, the servo motor is an engine for controlling mechanical elements to operate in a servo system and is an indirect speed changing device for assisting the motor, the servo motor can control the speed, the position accuracy is very accurate, voltage signals can be converted into torque and rotating speed to drive a control object, the rotating speed of a rotor of the servo motor is controlled by input signals and can quickly react, the motor is used as an executing element in an automatic control system, has the characteristics of small electromechanical time constant, high linearity, starting voltage and the like, can convert received electric signals into angular displacement or angular speed output on the motor shaft and is divided into two types of direct current and alternating current servo motors, the electric power detecting device is mainly characterized in that when the signal voltage is zero, no autorotation phenomenon exists, the rotating speed drops at a constant speed along with the increase of the torque, one end of an output shaft of the motor 10 is fixedly connected with a first gear 11, one sides of the surfaces of two threaded rods 9 are fixedly connected with a second gear 12 meshed with the first gear 11, the surfaces of the two threaded rods 9 are fixedly connected with a sliding block 13, one sides of the two sliding blocks 13 opposite to each other are fixedly connected with an electric power detecting pen 14, the electric power detecting pens 14 are fixed with the sliding block 13, and meanwhile, one limiting function of the sliding block 13 is achieved, the sliding block 13 cannot rotate along with the threaded rod 9, the length of the electric power detecting pens 14 can be adjusted, the touch of a hand of an maintainer on the pen holder of the electric power detecting pens 14 is avoided, the electric power is prevented from being caused, the safety of the maintainer is guaranteed to a certain extent, one side of the electric power detecting pens 14 is fixedly connected with a lead 24, the surface of a shell 2 is fixedly connected with an indicator lamp 25, one side of the lead 24 is electrically connected with the indicator lamp 25, and one side of the electric power detecting pen 14 extends through the shell 2 to the outside of the shell 2.
During the use, take out shell 2 from carrying section of thick bamboo 1, then adjust the position of ring board 3, promote ring board 3 forward, slide rail 17 will slide on movable block 18, when removing suitable distance, fixture block 20 will block into draw-in groove 23 under the elasticity of second spring 22, limit ring board 3, then press swash plate 6 relatively, swash plate 6 will drive diaphragm 4 and move on fixed plate 5, make diaphragm 4 keep away from one side of handle 27 reverse motion, move arc 8 to the position of the cable that needs to detect, loosen swash plate 6, under the elasticity of first spring 7, arc 8 will carry out relative motion, and press and clamp on the cable, then start switch 28, motor 10 will drive first gear 11 and rotate, second gear 12 with first gear 11 mesh will follow the rotation, drive threaded rod 9 and rotate, slider 13 drives under the rotation of threaded rod 9 and examine electric pencil 14 and move forward, until when 14 contacts the wire in the cable, switch 28, judge through observing pilot lamp 25 and detect, detect the motor, then move arc 8 and will carry out relative motion, and press the arc 2, and then take in the cable 2 is followed by moving down, take-up the inside of arc 2, take-up the inside can take-up the shell 2, then, take-up the inside can be moved from the inside of arc 2.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. The utility model provides a multifunctional electricity network electricity distribution is with checking pencil, is including carrying section of thick bamboo (1) and shell (2), the surface sliding connection of shell (2) has ring plate (3), its characterized in that: the top and the bottom of ring board (3) surface all swing joint have diaphragm (4) to the top and the bottom of ring board (3) one side all fixedly connected with fixed plate (5), one side fixedly connected with swash plate (6) of diaphragm (4), and fixedly connected with first spring (7) between the opposite one side of swash plate (6) and fixed plate (5), the opposite side fixedly connected with arc (8) of diaphragm (4) to the top and the bottom between the inner wall both sides of shell (2) all rotate and be connected with threaded rod (9), the inside fixedly connected with motor (10) of shell (2), the one end fixedly connected with first gear (11) of motor (10) output shaft to the one side of two threaded rod (9) surface all fixedly connected with second gear (12) that first gear (11) meshed, two the surface all threaded rod (9) are threaded connection with slider (13), and are fixedly connected with test electric pencil (14) between the opposite one side of two slider (13), one side of test electric pencil (14) and run through shell (2) and extend to the outside of shell (2); the opposite sides of the two arc plates (8) are fixedly connected with anti-skid lugs (15), and the opposite sides of the two sloping plates (6) are provided with anti-skid patterns (16);
the front and the back of the surface of the shell (2) are fixedly connected with a fixed shell (19), one side of the fixed shell (19) is movably connected with a clamping block (20), one side of the clamping block (20) extending to the inside of the fixed shell (19) is fixedly connected with a stop block (21), and a second spring (22) is fixedly connected between the bottom of the stop block (21) and the bottom of the inner wall of the fixed shell (19);
one side of the clamping block (20) penetrates through the annular plate (3) and extends to the outside of the annular plate (3), and clamping grooves (23) matched with the clamping block (20) are formed in two sides of the surface of the annular plate (3).
2. The utility model provides a multi-functional electric wire netting electricity distribution is with checking electrography which characterized in that: two opposite sides of the transverse plates (4) are fixedly connected with sliding rails (17), the top and the bottom of the surface of the shell (2) are fixedly connected with movable blocks (18), and one side of each movable block (18) is in sliding connection with one side of each sliding rail (17).
3. The utility model provides a multi-functional electric wire netting electricity distribution is with checking electrography which characterized in that: one side of the electricity test pen (14) is fixedly connected with a wire (24), and the surface of the shell (2) is fixedly connected with an indicator lamp (25), and the wire (24) is electrically connected with the indicator lamp (25).
4. The utility model provides a multi-functional electric wire netting electricity distribution is with checking electrography which characterized in that: the anti-skid cover (26) is sleeved on the surface of the shell (2), a handle (27) is fixedly connected to one side, far away from the anti-skid cover, of the shell (2), and a switch (28) is fixedly connected to one side of the handle (27).
5. The utility model provides a multi-functional electric wire netting electricity distribution is with checking electrography which characterized in that: the surface of the carrying cylinder (1) is provided with a binding belt (29), and the top of the carrying cylinder (1) is movably connected with a sealing cover (30).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910369787.1A CN109975599B (en) | 2019-05-06 | 2019-05-06 | Multifunctional electricity test pen for power distribution of power grid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910369787.1A CN109975599B (en) | 2019-05-06 | 2019-05-06 | Multifunctional electricity test pen for power distribution of power grid |
Publications (2)
| Publication Number | Publication Date |
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| CN109975599A CN109975599A (en) | 2019-07-05 |
| CN109975599B true CN109975599B (en) | 2024-04-05 |
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| CN201910369787.1A Active CN109975599B (en) | 2019-05-06 | 2019-05-06 | Multifunctional electricity test pen for power distribution of power grid |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111579902A (en) * | 2020-05-15 | 2020-08-25 | 国网山东省电力公司沂源县供电公司 | Electric power detection device that electric power construction used |
| CN112305451B (en) * | 2020-09-16 | 2023-10-03 | 彩虹（合肥）液晶玻璃有限公司 | Protective device for electroscope |
| CN112526195A (en) * | 2020-11-30 | 2021-03-19 | 东南大学扬州研究院 | Smart power grids system is with test pencil with pen point adjusting part |
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