CN216117725U - Handcart-type circuit breaker return circuit resistance testing arrangement - Google Patents
Handcart-type circuit breaker return circuit resistance testing arrangement Download PDFInfo
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- CN216117725U CN216117725U CN202122547526.XU CN202122547526U CN216117725U CN 216117725 U CN216117725 U CN 216117725U CN 202122547526 U CN202122547526 U CN 202122547526U CN 216117725 U CN216117725 U CN 216117725U
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- 238000012360 testing method Methods 0.000 title claims abstract description 85
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 66
- 229910052802 copper Inorganic materials 0.000 claims abstract description 66
- 239000010949 copper Substances 0.000 claims abstract description 66
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 claims description 5
- 239000004677 Nylon Substances 0.000 claims description 4
- 238000009434 installation Methods 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 229920001778 nylon Polymers 0.000 claims description 4
- 238000000034 method Methods 0.000 abstract description 8
- 230000008569 process Effects 0.000 abstract description 8
- 230000002035 prolonged effect Effects 0.000 abstract description 4
- 230000003044 adaptive effect Effects 0.000 abstract description 3
- 230000003068 static effect Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000002405 diagnostic procedure Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000009666 routine test Methods 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 210000000080 chela (arthropods) Anatomy 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 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
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Abstract
The utility model provides a handcart type circuit breaker loop resistance testing device, and belongs to the technical field of circuit breakers. The utility model provides a handcart type circuit breaker loop resistance testing device which comprises an insulating part, a conductive part and a handheld part, wherein a mounting groove is formed in the side wall of the insulating part; the conductive part comprises a conductive copper bar, a connecting bolt and a test lead, and the conductive copper bar is arranged in the mounting groove; the handheld portion comprises a handle, a first connecting piece and a second connecting piece, the first connecting piece and the second connecting piece are sequentially connected to the insulating portion, the first connecting piece and the insulating portion are located at the same horizontal position, the second connecting piece is arranged in a length direction deviating from the insulating portion, and the handle is arranged at one end, far away from the first connecting end, of the second connecting piece. According to the handcart type circuit breaker loop resistance testing device provided by the utility model, the testing process is closer to the actual operation condition, the testing data accuracy is high, the damage to the moving contact of the circuit breaker is reduced, the adaptive service life of the device is prolonged, and the popularization is easy.
Description
Technical Field
The utility model belongs to the technical field of power equipment, and particularly relates to a handcart type circuit breaker loop resistance testing device.
Background
Along with the continuous development of the economy of China, the electric power system of China is in a high-speed development stage, the living standard of people is also continuously improved, the power consumption is gradually increased along with the high-speed development of the economy and the improvement of the living standard of people, in order to continuously adapt to the increasing industrial power consumption and the increasing living power consumption requirements, the number of transformer stations is synchronously increased, the voltage grade of the transformer stations is also synchronously increased, meanwhile, the power transmission and transformation capacity of the power transmission and transformation line equipment is gradually improved in cooperation with the voltage grade of the transformer stations, the circuit breaker is used as indispensable important equipment in the transformer stations, the use safety of the circuit breaker is very important, therefore, the circuit breaker needs to be tested and detected, the use safety of the circuit breaker is ensured, and the test and detection comprise routine tests and diagnostic tests.
In the long-term operation of the circuit breaker, the contact resistance is too large due to the reasons that the contact surface is oxidized, the contact pressure of a moving contact and a static contact is reduced, the contact is burnt when a large current is cut off, and the like, so that the conductivity of the circuit breaker is influenced. Therefore, the circuit resistance of the circuit breaker needs to be tested to judge the conducting performance. The circuit breaker loop resistance test is an important test detection content of the routine test and the diagnostic test of the circuit breaker. The 10kV circuit breaker or 35kV circuit breaker used in the transformer substation is mostly of a handcart type, and a moving contact of the handcart type circuit breaker is composed of a conducting rod, a contact finger seat and an insulating sleeve. When carrying out the return circuit resistance test, generally use the return circuit resistance tester, use comparatively extensive return circuit resistance tester and generally adopt the binding clip to carry out experimental wiring, this mode has easy operation, convenient characteristics, at first closes a floodgate with the circuit breaker, then connects experimental lead wire to on the contact finger of upper and lower moving contact, constitutes a conductive loop, accomplishes the test through the return circuit resistance tester. However, the following disadvantages are also present: firstly, receive circuit breaker structure and test condition limit, the wiring position of wiring pincers is on the moving contact of circuit breaker touches the finger, sometimes can not directly connect to the contact of moving contact with experimental lead wire on, can only link to each other with the moving contact through external mode. The switch cabinet contact temperature testing device popularized at present is also arranged on the moving contact, and particularly after the 10kV handcart type circuit breaker is provided with the switch cabinet contact temperature testing device, the wiring clamp cannot perform test wiring, so that a loop resistance test cannot be performed; secondly, when the wiring clamp is connected with the moving contact, the proficiency of a tester can influence the wiring clamp, and the contact area between the conductive part of the wiring clamp and the contact is easy to be problematic, so that the test data is inaccurate; meanwhile, repeated wiring operation is carried out under the influence of the proficiency of testers and the contact area between the conductive part of the wiring clamp and the contact finger of the moving contact, so that the working efficiency is influenced, and the wiring clamp can damage the contact finger of the moving contact in the wiring process; in addition, the conventional wire pliers are not easy to hold during the wire connection process.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a handcart type circuit breaker loop resistance testing device, and aims to solve the problems that the working efficiency is influenced, a contact finger of a moving contact is damaged and a wiring clamp is not suitable to be held in the wiring process due to repeated wiring work in the loop resistance testing.
In order to achieve the purpose, the utility model adopts the technical scheme that: the utility model provides a handcart-type circuit breaker return circuit resistance testing arrangement, includes:
the side wall of the insulating part is provided with an installation groove;
the conductive part comprises a conductive copper bar, a connecting bolt and a test lead, the conductive copper bar is arranged in the mounting groove, and the conductive copper bar is connected with the test lead through the connecting bolt; and
the handheld portion, handheld portion includes handle, first connecting piece and second connecting piece, first connecting piece with the second connecting piece connects gradually on the insulating portion, just first connecting piece with the insulating portion is located same horizontal position, the second connecting piece is skew the length direction of insulating portion sets up, the handle sets up the second connecting piece is kept away from the one end of first connection.
In a possible implementation manner, the number of the mounting grooves is two, and the two mounting grooves are respectively arranged on the opposite side walls of the insulating part.
In one possible implementation manner, two conductive copper bars are arranged, and the conductive copper bars are symmetrically arranged in the mounting grooves.
In a possible implementation manner, a connecting column is arranged at one end, close to the handheld portion, of the conductive copper bar, the connecting column is vertically arranged on one side, away from the insulating portion, of the conductive copper bar, and the connecting column is in threaded connection with the connecting bolt.
In a possible implementation manner, a fixing screw is arranged between the conductive copper bar and the insulating part, and the fixing screw penetrates through the conductive copper bar and is in threaded connection with the insulating part.
In a possible implementation manner, a connecting piece is arranged at one end of the test lead connected with the connecting bolt.
In a possible implementation manner, one end of the insulating part close to the first connecting piece is provided with a mounting column, and the first connecting piece is provided with a mounting groove into which the mounting column can be embedded.
In a possible implementation manner, the handle is arranged perpendicular to the length direction of the conductive copper bar.
In one possible implementation, the insulating part is made of a nylon material.
In a possible implementation manner, an end of the conductive copper bar, which is far away from the handle, and an end of the insulating portion, which is far away from the handle, are in the same vertical plane.
The handcart type circuit breaker loop resistance testing device provided by the utility model has the beneficial effects that:
compared with the prior art, the device comprises an insulating part, a conductive part and a handheld part;
the insulating part is used for isolating the handheld part and the conductive part, one end of the insulating part is connected with the handheld part, the insulating part is used as a support of the conductive part, and the insulating part is used for simulating a static contact of a switch cabinet during a test;
the conductive part is arranged on the insulating part and comprises a conductive copper bar, a connecting bolt and a test lead, the conductive copper bar is arranged on the insulating part and is used for being connected with a moving contact of the circuit breaker, the connecting bolt is arranged on the conductive copper bar and connects the test lead with the conductive copper bar, the connection stability of the test lead is enhanced, and the test lead is convenient to disassemble;
the handheld part comprises a handle, a first connecting piece and a second connecting piece, the second connecting piece is arranged to deviate from the insulating part, the device is convenient to hold in a handheld mode in the test process, the device is more adaptive to the test environment, the use convenience of the device is improved, and the use safety of the device is improved as the other end of the first connecting piece is connected with the insulating part;
the handcart type circuit breaker loop resistance testing device provided by the utility model can effectively solve the problems that the working efficiency is low, the contact finger of the moving contact is damaged and the wiring clamp is not easy to hold in the wiring process due to repeated wiring work in the loop resistance test, and the contact between a test lead and the contact finger of the moving contact of the circuit breaker is closer to the actual operation condition by simulating the combination form of the moving contact and the fixed contact in the switch cabinet, so that the test data is more accurate; the damage to the moving contact of the breaker is reduced, and the service life of the device is prolonged.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a handcart type circuit breaker loop resistance testing device provided by an embodiment of the utility model;
fig. 2 is a schematic cross-sectional structural view of a conductive copper bar and a fixing screw adopted by the handcart type circuit breaker loop resistance testing device provided by the embodiment of the utility model;
fig. 3 is a schematic top view of a circuit resistance testing device of a handcart type circuit breaker according to an embodiment of the present invention.
In the figure:
1. a handle;
201. a first connecting member;
202. a second connecting member;
3. an insulating section;
4. a conductive copper bar;
5. a connecting bolt;
6. testing a lead;
7. connecting columns;
8. a set screw;
9. and assembling the column.
Detailed Description
To facilitate an understanding of the utility model, the utility model will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. In contrast, when an element is referred to as being "directly on" another element, there are no intervening elements present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1, a detailed description will be given of an embodiment of a circuit resistance testing device for a handcart type circuit breaker according to the present invention,
a handcart type circuit breaker loop resistance testing device comprises an insulating part 3, a conductive part and a handheld part, wherein a mounting groove is formed in the side wall of the insulating part 3; the conductive part comprises a conductive copper bar 4, a connecting bolt 5 and a test lead 6, the conductive copper bar 4 is arranged in the mounting groove, and the conductive copper bar 4 is connected with the test lead 6 through the connecting bolt 5; the handheld portion comprises a handle 1, a first connecting piece 201 and a second connecting piece 202, the first connecting piece 201 and the second connecting piece 202 are sequentially connected to the insulating portion 3, the first connecting piece 201 and the insulating portion 3 are located at the same horizontal position, the second connecting piece 202 deviates from the length direction of the insulating portion 3 and is arranged, and the handle 1 is arranged at one end, far away from the first connecting piece 201, of the second connecting piece 202.
Compared with the prior art, the handcart type circuit breaker loop resistance testing device provided by the utility model comprises an insulating part 3, a conductive part and a handheld part;
the insulating part 3 is used for isolating the handheld part and the conductive part, and one end of the insulating part 3 is connected with the handheld part; the conductive part is arranged on the insulating part 3 and comprises a conductive copper bar 4, a connecting bolt 5 and a test lead 6, the conductive copper bar 4 is arranged on the insulating part 3 and is used for being connected with a moving contact of a circuit breaker, the connecting bolt 5 is arranged on the conductive copper bar 4 and connects the test lead 6 with the conductive copper bar 4, so that the connection stability of the test lead 6 is enhanced, and the disassembly is convenient; the handheld part comprises a handle 1, a first connecting piece 201 and a second connecting piece 202, the second connecting piece 202 is arranged to deviate from the insulating part 3, the device is convenient to hold by hands in the test process, the device is more adaptive to the test environment, the use convenience of the device is improved, the other end of the first connecting piece 201 is connected with the insulating part 3, and the use safety of the device is improved; the handcart type circuit breaker loop resistance testing device provided by the utility model can effectively solve the problems that the working efficiency is low, the contact finger of the moving contact is damaged and the wiring clamp is not easy to hold in the wiring process due to repeated wiring work in the loop resistance test, and the contact between the test lead 6 and the contact finger of the moving contact of the circuit breaker is closer to the actual operation condition by simulating the combination form of the moving contact and the fixed contact in the switch cabinet, so that the test data is more accurate; the damage to the moving contact of the breaker is reduced, and the service life of the device is prolonged.
Specifically, fig. 1 includes a hand-held portion, an insulating portion 3 and a conductive portion.
The handheld part comprises a handle 1, a first connecting piece 201 and a second connecting piece 202, one end of the first connecting piece 201 is connected with the insulating part 3, the handle 1 is convenient to hold, the use convenience of the device is improved, the operation is easy, the first connecting piece 201 is arranged close to the insulating part 3, the second connecting piece 202 is arranged close to the handle 1, the first connecting piece 201 is arranged at the center of the insulating part 3, the axis of the first connecting piece 201 is coincident with the axis of the insulating part 3, and the use stability of the device is improved; the axis setting that second connecting piece 202 deviates first connecting piece 201, the device accords with human mechanics more, increases convenience and environmental suitability that the device used, and first connecting piece 201 and second connecting piece 202 are the integrated into one piece structure, and easy production further increases the stability that the device used, and first connecting piece 201 and second connecting piece 202 increase security and the stability that the device used.
The conductive part includes conductive copper bar 4, connecting bolt 5 and experimental lead 6, be provided with the mounting groove that is suitable for conductive copper bar 4 to install on the insulating part 3, conductive copper bar 4 is installed on insulating part 3, the security of increase device use, be provided with connecting bolt 5 on the conductive copper bar 4, connecting bolt 5 links together experimental lead 6 and conductive copper bar 4, easily installation dismantlement, and the stability of connection has been increased, the one end of handheld portion is kept away from to conductive copper bar 4, be connected with the reactor moving contact, be convenient for carry out experimental operation.
The safety and the reliability of the use of the equipment are improved, the wiring mode of a loop resistance test is improved, and the combination form of a moving contact and a static contact in a simulated switch cabinet is realized, so that the contact between a test lead 6 and a moving contact finger of a breaker is closer to the actual operation condition, and the test data is more accurate; the damage to the moving contact of the breaker is reduced, and the service life of the device is prolonged.
As a specific embodiment of the handcart type circuit breaker loop resistance testing device provided by the present invention, please refer to fig. 1, two mounting grooves are provided, and the two mounting grooves are respectively provided on the opposite side walls of the insulating portion 3.
Specifically, referring to fig. 1, two mounting grooves are provided, and the two mounting grooves are symmetrically disposed on the insulating portion 3, so as to facilitate the test operation.
As a specific embodiment of the handcart type circuit breaker loop resistance testing device provided by the utility model, please refer to fig. 1, two conductive copper bars 4 are provided, and the conductive copper bars 4 are symmetrically arranged in the mounting groove.
Specifically, referring to fig. 1, two conductive copper bars 4 are arranged and respectively arranged in the mounting groove, and the two conductive copper bars 4 are symmetrically arranged, so that the stability of the device and the accuracy of the test are improved.
As a specific embodiment of the handcart type circuit breaker loop resistance testing device provided by the utility model, referring to fig. 1, one end of the conductive copper bar 4 close to the handheld portion is provided with a connecting column 7, the connecting column 7 is vertically arranged on one side of the conductive copper bar 4 far away from the insulating portion 3, and the connecting column 7 is in threaded connection with the connecting bolt 5.
Specifically, please refer to fig. 1, the connecting column 7 is disposed at one end of the conductive copper bar 4 close to the hand-held portion, the connecting column 7 is vertically disposed on the conductive copper bar 4, and is disposed at one end of the conductive copper bar 4 far away from the mounting groove, so as to increase the convenience of the device.
Further, referring to fig. 1, a connection hole is formed in the connection column 7, an axis direction of the connection hole is parallel to an axis direction of the insulation portion 3 and is perpendicular to the surface of the connection column 7, and the connection bolt 5 penetrates through the connection hole and is in threaded connection with the connection column 7, so that the use stability of the device is improved.
As a specific embodiment of the handcart type circuit breaker loop resistance testing device provided by the present invention, referring to fig. 2, a fixing screw 8 is disposed between the conductive copper bar 4 and the insulating portion 3, and the fixing screw 8 penetrates through the conductive copper bar 4 and is in threaded connection with the insulating portion 3.
Specifically, please refer to fig. 2, the fixing screw 8 is used for fixing the conductive copper bar 4 on the insulating portion 3, the fixing screw 8 holes for communicating are arranged at the bottoms of the conductive copper bar 4 and the mounting groove, the fixing screw 8 penetrates the fixing screw 8 holes to fix the conductive copper bar 4 in the mounting groove, so that the conductive copper bar 4 can be conveniently installed and replaced, and the use stability of the device is improved.
Further, the number of the fixing screws 8 is multiple, and the number of the fixing screws 8 can be two, so that the stability of the device is improved.
Further, set screw 8 sets up on the axis of copper busbar 4, is convenient for carry out the installation change of copper busbar 4, increases the convenience and the stability of device.
As a specific embodiment of the handcart type circuit breaker loop resistance testing device provided by the utility model, a connecting sheet is arranged at one end of the test lead 6 connected with the connecting bolt 5.
Specifically, the test lead 6 is provided with a connecting sheet which is made of metal.
Further, connection piece one end sets up the one end at experimental lead wire 6, but the connection piece other end joint is between connecting bolt 5 and conductive copper bar 4, increases the simplicity and stability that the device used.
Further, the one end that experimental lead wire 6 was kept away from to the connection piece is provided with the joint groove, and joint groove width is greater than the diameter of connecting bolt 5's shaft, and is less than the diameter of connecting bolt 5's bolt head, and connecting bolt 5 runs through the joint groove of connection piece, fixes the connection piece on electrically conductive copper bar 4, increases the stability of connecting.
Referring to fig. 1 and 3, as an embodiment of a circuit resistance testing device for a handcart type circuit breaker, an end of an insulating part 3 close to a first connecting piece 201 is provided with an assembling post 9, and the first connecting piece 201 is provided with an assembling groove into which the assembling post 9 can be inserted.
Specifically, referring to fig. 1 and 3, an assembly post 9 is disposed at one end of the insulating portion 3, an assembly groove is disposed at one end of the first connecting member 201 away from the handle 1, the assembly groove is matched with the assembly post 9, and the assembly post 9 is clamped in the assembly groove to increase the stability of the device.
As a specific embodiment of the handcart type circuit breaker loop resistance testing device provided by the present invention, please refer to fig. 1 and fig. 3, the handle 1 is arranged perpendicular to the length direction of the conductive copper bar 4.
Specifically, referring to fig. 1 and 3, the handle 1 is perpendicular to the conductive copper bar 4, so that the handle is convenient to hold, and the comfort and convenience of the device are improved.
As a specific embodiment of the handcart type circuit breaker loop resistance testing device provided by the utility model, the insulating part 3 is made of a nylon material.
Specifically, insulating part 3 is made by insulating material, and insulating part 3 can adopt the nylon materials to make, guarantees the insulating properties of device, guarantees the security of device in the experimentation.
As a specific embodiment of the handcart type circuit breaker loop resistance testing device provided by the present invention, please refer to fig. 1 to 3, where an end of the conductive copper bar 4 far from the handle 1 and an end of the insulating portion 3 far from the handle 1 are on the same vertical plane.
Specifically, referring to fig. 1 to 3, the free ends of the conductive copper bar 4 and the insulating portion 3 are located on the same vertical plane, so that the stability and convenience of the device are improved.
The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides a handcart-type circuit breaker return circuit resistance testing arrangement which characterized in that includes:
the side wall of the insulating part is provided with an installation groove;
the conductive part comprises a conductive copper bar, a connecting bolt and a test lead, the conductive copper bar is arranged in the mounting groove, and the conductive copper bar is connected with the test lead through the connecting bolt; and
the handheld portion, handheld portion includes handle, first connecting piece and second connecting piece, first connecting piece with the second connecting piece connects gradually on the insulating portion, just first connecting piece with the insulating portion is located same horizontal position, the second connecting piece is skew the length direction of insulating portion sets up, the handle sets up the second connecting piece is kept away from the one end of first connecting piece.
2. The handcart type circuit breaker loop resistance testing device of claim 1, wherein, two mounting grooves are arranged, and the two mounting grooves are respectively arranged on the opposite side walls of the insulating part.
3. The handcart type circuit breaker loop resistance testing device of claim 2, wherein there are two conductive copper bars, and the conductive copper bars are symmetrically arranged in the mounting groove.
4. The handcart type circuit breaker loop resistance testing device according to claim 1, wherein a connecting column is arranged at one end of the conductive copper bar close to the hand-held part, the connecting column is vertically arranged at one side of the conductive copper bar far away from the insulating part, and the connecting column is in threaded connection with the connecting bolt.
5. The handcart type circuit breaker loop resistance testing device according to claim 1, wherein a fixing screw is arranged between the conductive copper bar and the insulating part, and the fixing screw penetrates through the conductive copper bar and is in threaded connection with the insulating part.
6. The handcart type circuit breaker loop resistance testing device according to claim 1, wherein one end of the test lead wire connected with the connecting bolt is provided with a connecting sheet.
7. The handcart type circuit breaker loop resistance testing device of claim 1, wherein one end of the insulating part close to the first connecting piece is provided with an assembling post, and the first connecting piece is provided with an assembling groove in which the assembling post can be embedded.
8. The handcart type circuit breaker loop resistance testing device of claim 1, wherein the handle is arranged perpendicular to the length direction of the conductive copper bar.
9. The handcart type circuit breaker loop resistance testing device of claim 1, wherein the insulating part is made of nylon material.
10. The handcart type circuit breaker loop resistance testing device of claim 1, wherein one end of the conductive copper bar, which is far away from the handle, and one end of the insulating part, which is far away from the handle, are on the same vertical plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122547526.XU CN216117725U (en) | 2021-10-22 | 2021-10-22 | Handcart-type circuit breaker return circuit resistance testing arrangement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122547526.XU CN216117725U (en) | 2021-10-22 | 2021-10-22 | Handcart-type circuit breaker return circuit resistance testing arrangement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216117725U true CN216117725U (en) | 2022-03-22 |
Family
ID=80694797
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122547526.XU Active CN216117725U (en) | 2021-10-22 | 2021-10-22 | Handcart-type circuit breaker return circuit resistance testing arrangement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216117725U (en) |
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2021
- 2021-10-22 CN CN202122547526.XU patent/CN216117725U/en active Active
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