CN215813141U - Line concentration and selection integrated tester for high-voltage circuit breaker - Google Patents
Line concentration and selection integrated tester for high-voltage circuit breaker Download PDFInfo
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Abstract
The invention relates to a high-voltage circuit breaker line concentration and selection comprehensive tester, which comprises a box body, a box cover, a lock catch and an operation panel, wherein an A-phase aviation socket, a B-phase aviation socket, a C-phase aviation socket, a loop phase selection circuit selection switch, a power interface, a power main switch, a unit function change-over switch, a grounding terminal, an instrument switching-on and switching-off control power circuit common terminal, an instrument switching-off control power circuit switching-off terminal, an instrument switching-on control power circuit switching-on terminal, a breaker characteristic test circuit upper fracture line selection control switch, a breaker characteristic test circuit lower fracture line selection control switch, a first printer, a second printer, a switch characteristic test unit touch screen and a loop test unit touch screen are fixedly arranged on the operation panel and are respectively and electrically connected with corresponding ports on a PCB circuit board arranged in the box body; during the test, the problems of low efficiency, overweight personnel bearing capacity, high climbing safety risk and high climbing frequency in the electrical test are solved.
Description
Technical Field
The invention relates to the field of power grid testing tools, in particular to a line concentration and selection comprehensive tester for a high-voltage circuit breaker.
Background
The circuit breaker applied to the power grid mainly comprises: car-type vacuum circuit breakers, open-type SF6 circuit breakers, etc., which require the following electrical routine test items to be performed before verification: insulation resistance test, circuit breaker operating characteristic test, main circuit resistance test, therefore need carry corresponding equipment to test, can put into the electric wire netting operation after waiting through the experiment.
At present, one of reliable operation elements of a power grid is lack of power failure and short in power failure interval time, so that the power grid is limited by factors such as short operation time, large equipment quantity, few climbing personnel, heavy test work tasks and the like when power is planned to be powered off, and the power grid is limited by factors such as low efficiency, overweight personnel bearing capacity, high climbing safety risk, high climbing times and the like, and moreover, due to the fact that three different project tests have respective test leads, the climbing personnel are required to climb to connect and disconnect lines for at least 6 times when three routine test projects of one circuit breaker are completed.
Disclosure of Invention
The invention provides a high-voltage circuit breaker line concentration and selection comprehensive tester aiming at the defect that an effective test tool is lacked in a circuit breaker test, and aims to solve the working situations of low efficiency, overlarge personnel bearing capacity, high climbing safety risk and high climbing times in an electrical test.
The invention discloses a line concentration and selection comprehensive tester of a high-voltage circuit breaker, which comprises: the circuit breaker performance testing device comprises a box body 1, a box cover 2, a lock catch 3 and an operation panel 4, wherein an A-phase aviation socket 410, a B-phase aviation socket 411, a C-phase aviation socket 412, a loop phase selection circuit selection switch 413, a power interface 414, a power main switch 415, a unit function switching switch 416, a grounding terminal 417, an instrument switching control power circuit common terminal 418, an instrument switching control power circuit switching-off terminal 419, an instrument switching-on control power circuit switching-on terminal 420, a breaker performance testing loop upper fracture line selection control switch 421, a breaker performance testing loop lower fracture line selection control switch 422, a first printer 423, a second printer 424, a switch performance testing unit touch screen 425 and a loop testing unit touch screen 426 are fixedly arranged on the operation panel 4 and are respectively and electrically connected with corresponding ports on a PCB circuit board arranged in the box body 1.
Further, the a-phase aviation socket 410, the B-phase aviation socket 411, the C-phase aviation socket 412, the loop phase selection circuit selection switch 413 and the power interface 414 are sequentially and fixedly arranged on the upper portion of the operation panel 4 from left to right; the A-phase aviation socket 410 is electrically connected with a phase A port of a test circuit on the PCB and used for communicating a phase A test loop; the phase B aviation socket 411 is electrically connected with a phase B port of a test circuit on the PCB and used for communicating a phase B test loop; the C-phase aviation socket 412 is electrically connected with a C-phase port of a test circuit on the PCB, and is used for communicating a C-phase test loop; the loop phase selection circuit selection switch 413 is electrically connected with a phase test circuit port on the PCB and is used for controlling the on-off of loop test circuits of phases A, B and C; the power interface 414 is electrically connected to a power module on the PCB for inputting a working power.
The power main switch 415 is fixedly arranged below the power interface 414, is electrically connected with a power interface loop switch on the PCB, and is used for starting and stopping the high-voltage circuit breaker line concentration and selection comprehensive tester; the unit function switch 416 is located below the power main switch 415 and is fixedly arranged, and is connected in series with a power circuit between the circuit testing unit and the characteristic testing unit on the PCB for power switching between the circuit testing and the characteristic testing.
A ground terminal 417 is fixedly arranged at the lower right of the circuit phase selection circuit selection switch 413, and an instrument switching control power supply circuit common terminal 418 is fixedly arranged at the lower left; the grounding terminal 417 is electrically connected with a grounding circuit ground connecting terminal on the PCB circuit board and is used for grounding of the line concentration and selection comprehensive tester of the high-voltage circuit breaker; the instrument switching control power supply loop common terminal 418 is electrically connected with a switching control power supply loop common terminal on the PCB, and forms a loop with a switching-on terminal or a switching-off terminal for outputting switching-off and switching-on signals.
An instrument switching-off control power supply loop switching-off terminal 419 is fixedly arranged at the lower right of the C-phase aviation socket 412, and an instrument switching-on control power supply loop switching-on terminal 420 is fixedly arranged at the lower left; the device switching-off control power supply loop switching-off terminal 419 is electrically connected with a switching-off control power supply loop switching-off terminal on the PCB, forms a loop with a common terminal and is used for outputting a switching-off signal; the instrument switching-on control power supply circuit switching-on terminal 420 is electrically connected with a switching-on and switching-off control power supply circuit switching-on terminal on the PCB circuit board, and forms a circuit with the common terminal for outputting a switching-on signal.
A circuit breaker characteristic test loop upper fracture line selection control switch 421 is fixedly arranged below the B-phase aviation socket 411 and is electrically connected in series with a circuit breaker characteristic test loop upper fracture test lead terminal on a PCB circuit board for controlling a circuit breaker characteristic test loop upper fracture circuit; and a circuit breaker characteristic test loop lower fracture line selection control switch 422 is fixedly arranged below the A-phase aviation socket 410, is electrically connected with a circuit breaker characteristic test loop lower fracture test lead terminal on the PCB circuit board in series, and is used for controlling a circuit breaker characteristic test loop lower fracture circuit.
The switch characteristic test unit touch screen 425 and the loop test unit touch screen 426 are fixedly arranged at the lower part of the operation panel 4 from left to right in sequence, a first printer 423 is fixedly arranged above the switch characteristic test unit touch screen 425, and a second printer 424 is fixedly arranged on the loop test unit touch screen 426; the first printer 423 is electrically connected with a printing port of the characteristic testing unit module on the PCB and is used for printing test data; the second printer 424 is connected with a printing port of the loop test unit module on the PCB for printing test data; the switch characteristic test unit touch screen 425 is electrically connected with the input and output interface of the switch characteristic test unit on the PCB and used for inputting and outputting test parameters; the loop test unit touch screen 426 is electrically connected to the input/output interface of the loop test unit module on the PCB, and is used for inputting/outputting test parameters.
Preferably, the specification of the a-phase aviation socket 410, the B-phase aviation socket 411 and the C-phase aviation socket 412 is 4 x 100A, namely four-pin socket capable of passing 100A current.
Preferably, the specification of the power interface 414, the power master switch 415, the unit function switch 416, the instrument switching control power circuit common terminal 418, the instrument switching control power circuit opening terminal 419 and the instrument switching control power circuit closing terminal 420 is AC220V/5A, that is, the device is suitable for AC220V and can pass 5A current.
Preferably, the specification of the loop phase selection circuit selection switch 413 is a 4-speed 100A knob switch.
Preferably, the cross section of the ground terminal 417 is not less than 16mm2。
Preferably, the specification of the upper fracture line selection control switch 421 and the lower fracture line selection control switch 422 of the circuit breaker characteristic test circuit are knob switches of two-gear DC 100A.
Preferably, the first printer 423 and the second printer 424 have an external dimension of 5 × 8 cm.
Preferably, the external dimensions of the switching characteristic test unit touch screen 425 and the loop test unit touch screen 426 are 10 × 18 cm.
The invention has the following beneficial effects: the line concentration and selection comprehensive tester for the high-voltage circuit breaker adopts a box body type, all original devices are arranged in the box body in a centralized manner and are buckled by using the lock catches 3, the integration level is high, the safety is good, the test connecting line is arranged in the containing bag of the box cover 2, the use is convenient, the loss is not easy, the related original devices are fixedly arranged on the operation panel 4, a tester can complete all operations and directly obtain test data, the line concentration and selection comprehensive tester is very convenient and fast, a test circuit is arranged on the PCB and is provided with corresponding wiring ports, the later maintenance cost is low, the replacement and damage of the original devices are very convenient, and the comprehensive service life is effectively prolonged; and the tester selects the corresponding knob to select the line and connect the line according to different test items, can finish the test of the action characteristic of the circuit breaker and the test item of the resistance of the main loop, thus effectively reducing and reducing the ascending times and the operation risk of the operator and improving the test efficiency and the reliability.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1: a schematic diagram of a high-voltage circuit breaker line concentration and selection comprehensive tester;
FIG. 2: the high-voltage circuit breaker line concentration and selection comprehensive tester comprises an operation panel arrangement schematic diagram;
in the figure: 1. a box body; 2. a box cover; 3. locking; 4. an operation panel; 410. an A-phase aviation socket; 411. a B-phase aviation socket; 412. a phase C aviation socket; 413. a loop phase selection circuit selection switch; 414. a power interface; 415. a power supply main switch; 416. a unit function changeover switch; 417. a ground terminal; 418. the instrument switching control power supply circuit common terminal; 419. the instrument switching-off control power supply loop switching-off terminal; 420. a closing terminal of an instrument closing control power supply loop; 421. a circuit breaker characteristic test loop fracture line selection control switch; 422. a circuit breaker characteristic test loop lower fracture line selection control switch; 423. a first printer; 424. a second printer; 425. a switching characteristic test unit touch screen; 426. and the loop test unit is used for testing the touch screen.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example (b):
in the attached figure 1, the integrated tester for line concentration and line selection of the high-voltage circuit breaker comprises: the circuit breaker comprises a box body 1, a box cover 2, a lock catch 3 and an operation panel 4, wherein the operation panel 4 is fixedly provided with an A-phase aviation socket 410, a B-phase aviation socket 411, a C-phase aviation socket 412, a loop phase selection circuit selection switch 413, a power interface 414, a power main switch 415, a unit function switch 416, a grounding terminal 417, an instrument switching control power circuit common terminal 418, an instrument switching control power circuit switching-off terminal 419, an instrument switching-on control power circuit switching-on terminal 420, a breaker characteristic test circuit upper fracture line selection control switch 421, a breaker characteristic test circuit lower fracture line selection control switch 422, a first printer 423, a second printer 424, a switch characteristic test unit touch screen 425 and a loop test unit touch screen 426, and the A-phase aviation socket, the B-phase aviation socket 411, the C-phase aviation socket, the loop phase selection circuit selection switch 413, the power interface 414, the power main switch 415, the unit function switch 416, the grounding terminal 417, the instrument switching-on switching control power circuit switching-off control power circuit switching-on terminal 419, the instrument switching control power circuit switching-on circuit, the breaker characteristic test circuit upper fracture line selection control switch 421, the circuit lower fracture line selection control switch 422, the first printer 423, the second printer 424, the switch 425 and the switch 426, and the switch for testing unit touch screen 426, and the circuit for electrically connected with corresponding connection ports on the PCB circuit board arranged in the box body 1.
High-voltage circuit breaker line concentration route selection integrated test appearance adopts the box formula, all former devices concentrate and set up wherein in, and with 3 locks of hasp, the integrated level is high and the security is good, wherein experimental line is arranged in the bag that holds of case lid 2, convenient to use and difficult losing, at the fixed relevant former device that sets up of operating panel 4, the tester can accomplish whole operations, and directly obtain test data, it is very convenient, the last test circuit that has arranged of PCB circuit board, and be provided with corresponding wiring port, later maintenance low cost, it is very convenient to change the former device of damage, the comprehensive life has effectively been improved.
In fig. 2, the a-phase aviation socket 410, the B-phase aviation socket 411, the C-phase aviation socket 412, the loop phase selection circuit selection switch 413 and the power interface 414 according to the present invention are sequentially and fixedly disposed on the upper portion of the operation panel 4 from left to right; the A-phase aviation socket 410 is electrically connected with a phase A port of a test circuit on the PCB and used for communicating a phase A test loop; the phase B aviation socket 411 is electrically connected with a phase B port of a test circuit on the PCB and used for communicating a phase B test loop; the C-phase aviation socket 412 is electrically connected with a C-phase port of a test circuit on the PCB, and is used for communicating a C-phase test loop; the loop phase selection circuit selection switch 413 is electrically connected with a phase test circuit port on the PCB and is used for controlling the on-off of loop test circuits of phases A, B and C; the power interface 414 is electrically connected to a power module on the PCB for inputting a working power.
The power main switch 415 is fixedly arranged below the power interface 414, is electrically connected with a power interface loop switch on the PCB, and is used for starting and stopping the high-voltage circuit breaker line concentration and selection comprehensive tester; the unit function switch 416 is located below the power main switch 415 and is fixedly arranged, and is connected in series with a power circuit between the circuit testing unit and the characteristic testing unit on the PCB for power switching between the circuit testing and the characteristic testing.
A ground terminal 417 is fixedly arranged at the lower right of the circuit phase selection circuit selection switch 413, and an instrument switching control power supply circuit common terminal 418 is fixedly arranged at the lower left; the grounding terminal 417 is electrically connected with a grounding circuit ground connecting terminal on the PCB circuit board and is used for grounding of the line concentration and selection comprehensive tester of the high-voltage circuit breaker; the instrument switching control power supply loop common terminal 418 is electrically connected with a switching control power supply loop common terminal on the PCB, and forms a loop with a switching-on terminal or a switching-off terminal for outputting switching-off and switching-on signals.
An instrument switching-off control power supply loop switching-off terminal 419 is fixedly arranged at the lower right of the C-phase aviation socket 412, and an instrument switching-on control power supply loop switching-on terminal 420 is fixedly arranged at the lower left; the device switching-off control power supply loop switching-off terminal 419 is electrically connected with a switching-off control power supply loop switching-off terminal on the PCB, forms a loop with a common terminal and is used for outputting a switching-off signal; the instrument switching-on control power supply circuit switching-on terminal 420 is electrically connected with a switching-on and switching-off control power supply circuit switching-on terminal on the PCB circuit board, and forms a circuit with the common terminal for outputting a switching-on signal.
A circuit breaker characteristic test loop upper fracture line selection control switch 421 is fixedly arranged below the B-phase aviation socket 411 and is electrically connected in series with a circuit breaker characteristic test loop upper fracture test lead terminal on a PCB circuit board for controlling a circuit breaker characteristic test loop upper fracture circuit; and a circuit breaker characteristic test loop lower fracture line selection control switch 422 is fixedly arranged below the A-phase aviation socket 410, is electrically connected with a circuit breaker characteristic test loop lower fracture test lead terminal on the PCB circuit board in series, and is used for controlling a circuit breaker characteristic test loop lower fracture circuit.
The switch characteristic test unit touch screen 425 and the loop test unit touch screen 426 are fixedly arranged at the lower part of the operation panel 4 from left to right in sequence, a first printer 423 is fixedly arranged above the switch characteristic test unit touch screen 425, and a second printer 424 is fixedly arranged on the loop test unit touch screen 426; the first printer 423 is electrically connected with a printing port of the characteristic testing unit module on the PCB and is used for printing test data; the second printer 424 is connected with a printing port of the loop test unit module on the PCB for printing test data; the switch characteristic test unit touch screen 425 is electrically connected with the input and output interface of the switch characteristic test unit on the PCB and used for inputting and outputting test parameters; the loop test unit touch screen 426 is electrically connected to the input/output interface of the loop test unit module on the PCB, and is used for inputting/outputting test parameters.
Preferably, the specification of the a-phase aviation socket 410, the B-phase aviation socket 411 and the C-phase aviation socket 412 is 4 × 100A, that is, four-pin sockets capable of passing 100A of current.
Preferably, the specification of the power interface 414, the power master switch 415, the unit function switch 416, the instrument switching control power circuit common terminal 418, the instrument switching control power circuit opening terminal 419 and the instrument switching control power circuit closing terminal 420 is AC220V/5A, that is, the specification is suitable for devices with alternating current of 220V and capable of passing 5A current.
Preferably, the specification of the loop phase selection circuit selection switch 413 is a 4 th 100A knob switch.
Preferably, the cross section of the ground terminal 417 is not less than 16mm2。
Preferably, the specification of the breaker characteristic test circuit upper fracture line selection control switch 421 and the breaker characteristic test circuit lower fracture line selection control switch 422 is two-gear knob switches of DC 100A.
Preferably, the first printer 423 and the second printer 424 have an external dimension of 5 × 8 cm.
Preferably, the external dimensions of the switching characteristic test unit touch screen 425 and the circuit test unit touch screen 426 are 10 × 18 cm.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (9)
1. The utility model provides a high-voltage circuit breaker line concentration line selection integrated test appearance, includes box (1), case lid (2), hasp (3) and operating panel (4), a serial communication port, operating panel (4) are gone up fixed A looks aviation socket (410), B looks aviation socket (411), C looks aviation socket (412), circuit phase selection circuit selection switch (413), power source (414), power master switch (415), unit function change-over switch (416), ground terminal (417), instrument on-off control power supply circuit public terminal (418), instrument on-off control power supply circuit separating brake terminal (419), instrument on-off control power supply circuit closing terminal (420), circuit breaker characteristic test circuit upper fracture line selection control switch (421), circuit breaker characteristic test circuit lower fracture line selection control switch (422), first printer (423), second printer (424) line selection control switch (422), The switch characteristic test unit touch screen (425) and the loop test unit touch screen (426) are respectively and electrically connected with corresponding ports on a PCB circuit board arranged in the box body (1).
2. The line concentration and selection comprehensive tester for the high-voltage circuit breakers according to claim 1, wherein the A-phase aviation socket (410), the B-phase aviation socket (411), the C-phase aviation socket (412), the loop phase selection circuit selection switch (413) and the power interface (414) are fixedly arranged on the upper part of the operation panel (4) from left to right in sequence; the A-phase aviation socket (410) is electrically connected with a phase A port of a test circuit on the PCB and used for communicating a phase A test loop; the B-phase aviation socket (411) is electrically connected with a B-phase port of a test circuit on the PCB and used for communicating a B-phase test loop; the C-phase aviation socket (412) is electrically connected with a C-phase port of a test circuit on the PCB and used for communicating a C-phase test loop; the loop phase selection circuit selection switch (413) is electrically connected with a phase test circuit port on the PCB and used for controlling the on-off of loop test circuits of phases A, B and C; the power supply interface (414) is electrically connected with a power supply module on the PCB and is used for inputting a working power supply;
the power main switch (415) is positioned below the power interface (414), is fixedly arranged, is electrically connected with a power interface loop switch on the PCB, and is used for starting and stopping the high-voltage circuit breaker line concentration and selection comprehensive tester; the unit function switch (416) is positioned below the power main switch (415), fixedly arranged, connected with a power circuit between the circuit test unit and the characteristic test unit on the PCB in series and used for switching the power between the circuit test and the characteristic test;
a grounding terminal (417) is fixedly arranged at the lower right side of the circuit phase selection circuit selection switch (413), and an instrument switching control power supply circuit common terminal (418) is fixedly arranged at the lower left side; the grounding terminal (417) is electrically connected with a grounding circuit ground connecting terminal on the PCB circuit board and is used for grounding of the high-voltage circuit breaker line concentration and selection comprehensive tester; the instrument switching control power supply loop common terminal (418) is electrically connected with the switching control power supply loop common terminal on the PCB, and forms a loop with the switching-on terminal or the switching-off terminal for outputting switching-off and switching-on signals;
an instrument switching-off control power supply loop switching-off terminal (419) is fixedly arranged at the lower right side of the C-phase aviation socket (412), and an instrument switching-on control power supply loop switching-on terminal (420) is fixedly arranged at the lower left side; the device switching-off control power supply circuit switching-off terminal (419) is electrically connected with a switching-off control power supply circuit switching-off terminal on the PCB, and forms a circuit with the common terminal for outputting a switching-off signal; the instrument switching-on control power supply loop switching-on terminal (420) is electrically connected with a switching-on terminal of a switching-off control power supply loop on the PCB circuit board, forms a loop with a public terminal and is used for outputting a switching-on signal;
a circuit breaker characteristic test loop upper fracture line selection control switch (421) is fixedly arranged below the B-phase aviation socket (411), is electrically connected in series with a circuit breaker characteristic test loop upper fracture test lead terminal on a PCB circuit board, and is used for controlling a circuit breaker characteristic test loop upper fracture circuit; a circuit breaker characteristic test loop lower fracture line selection control switch (422) is fixedly arranged below the A-phase aviation socket (410), is electrically connected in series with a circuit breaker characteristic test loop lower fracture test lead terminal on the PCB circuit board, and is used for controlling a circuit breaker characteristic test loop lower fracture circuit;
the switch characteristic testing unit touch screen (425) and the loop testing unit touch screen (426) are fixedly arranged at the lower part of the operation panel (4) from left to right in sequence, a first printer (423) is fixedly arranged above the switch characteristic testing unit touch screen (425), and a second printer (424) is fixedly arranged on the loop testing unit touch screen (426); the first printer (423) is electrically connected with a printing port of the characteristic testing unit module on the PCB and used for printing test data; the second printer (424) is connected with a printing port of the loop test unit module on the PCB and used for printing test data; the switch characteristic testing unit touch screen (425) is electrically connected with the input and output interface of the switch characteristic testing unit on the PCB and used for inputting and outputting test parameters; the circuit testing unit touch screen (426) is electrically connected with the input and output interface of the circuit testing unit module on the PCB and used for inputting and outputting testing parameters.
3. The integrated tester for the line concentration and selection of the high-voltage circuit breaker according to claim 2, wherein the specification of the A-phase aviation socket (410), the B-phase aviation socket (411) and the C-phase aviation socket (412) is 4 x 100A, namely four-pin sockets capable of passing 100A of current.
4. The integrated tester for line concentration and line selection of the high-voltage circuit breaker according to claim 2, wherein the specifications of the power interface (414), the power main switch (415), the unit function switch (416), the instrument switching control power circuit common terminal (418), the instrument switching control power circuit switching terminal (419) and the instrument switching control power circuit switching terminal (420) are AC220V/5A, that is, the integrated tester is suitable for AC220V and can pass 5A current.
5. The integrated tester for line concentration and selection of high-voltage circuit breakers according to claim 2, characterized in that the specification of the loop phase selection circuit selection switch (413) is a 4-gear 100A knob switch.
6. The line concentration and selection comprehensive tester for the high-voltage circuit breaker according to claim 2, characterized in that the section of the grounding terminal (417) is not less than 16mm2。
7. The integrated tester for line concentration and selection of the high-voltage circuit breaker according to claim 2, wherein the specification of the upper fracture line selection control switch (421) and the lower fracture line selection control switch (422) of the circuit breaker characteristic test loop is a knob switch of two-gear DC 100A.
8. The integrated tester for line concentration and line selection of the high-voltage circuit breaker according to claim 2, wherein the first printer (423) and the second printer (424) have an external dimension of 5 x 8 cm.
9. The integrated tester for line concentration and selection of high-voltage circuit breakers according to claim 2, wherein the external dimensions of the switching characteristic test unit touch screen (425) and the loop test unit touch screen (426) are 10 x 18 cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121878488.XU CN215813141U (en) | 2021-08-12 | 2021-08-12 | Line concentration and selection integrated tester for high-voltage circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121878488.XU CN215813141U (en) | 2021-08-12 | 2021-08-12 | Line concentration and selection integrated tester for high-voltage circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215813141U true CN215813141U (en) | 2022-02-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121878488.XU Active CN215813141U (en) | 2021-08-12 | 2021-08-12 | Line concentration and selection integrated tester for high-voltage circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215813141U (en) |
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2021
- 2021-08-12 CN CN202121878488.XU patent/CN215813141U/en active Active
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