CN218546869U - Special tool for testing loop resistance of indoor handcart type high-voltage circuit breaker - Google Patents
Special tool for testing loop resistance of indoor handcart type high-voltage circuit breaker Download PDFInfo
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- CN218546869U CN218546869U CN202122351371.2U CN202122351371U CN218546869U CN 218546869 U CN218546869 U CN 218546869U CN 202122351371 U CN202122351371 U CN 202122351371U CN 218546869 U CN218546869 U CN 218546869U
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Abstract
The utility model relates to a special tool for testing the loop resistance of an indoor handcart type high-voltage circuit breaker, which comprises a handle metal frame, an insulating handle and a cone connector; the handle metal frame is an inverted isosceles trapezoid, a connecting bolt is fixedly arranged at the center of the bottom of the handle metal frame, the top of the handle metal frame is sleeved with an insulating handle, and a current electrode wiring terminal is further arranged on one side of the top of the handle metal frame; the number of the cone joints is a plurality, the diameters of the cone joints are different, a threaded hole matched with the connecting bolt is formed in the center of the top of each cone joint, and the cone joints can be detachably connected with the handle metal frame through the threaded holes and the connecting bolts; and the upper part of one side end face of each cone joint is also provided with a voltage pole wiring hole. The special tool for testing the loop resistance of the indoor handcart type high-voltage circuit breaker is convenient to replace the cone, meanwhile, the influence of the contact resistance of the handle metal frame, the bolt and the cone connector in the detection process of the contact claw of the high-voltage handcart type circuit breaker is avoided, and the accuracy of the detection result of the contact claw of the circuit breaker is ensured.
Description
Technical Field
The utility model relates to a detection device, in particular to indoor handcart-type high-voltage circuit breaker return circuit resistance test specialized tool.
Background
Because the high-voltage handcart type circuit breaker is arranged in the sealing cabinet, the high-voltage handcart type circuit breaker is easy to generate heat and even cause faults due to poor contact of the contact claws in the use process. In order to ensure that the circuit breaker can work normally, the contact condition of the contact claw of the circuit breaker needs to be detected regularly. In the prior art, the outgoing line of a measurer is connected to a conducting rod of a breaker for contact detection, and the mode can only detect the conducting condition of the conducting rod and cannot detect the contact condition of the conducting rod and a contact claw. In addition, the circuit breaker needs to be disconnected during detection, and a spring on the contact claw can enable the contact claw to be folded to be separated from the conducting rod, so that the detection work cannot be completed. Therefore, the contact condition of the contact claw and the conducting rod can be observed only by means of manual naked eyes, errors are easy to generate, and hidden dangers such as fatigue of the contact claw spring and ablation of the contact finger cannot be effectively found, so that the safe and stable operation of the circuit breaker is influenced.
The application numbers are: 201320873076.6 provides a high-voltage handcart type circuit breaker contact claw detection device, which can conveniently detect the contact claw of a circuit breaker; however, the cone of the high-voltage handcart type circuit breaker contact claw detection device is troublesome to replace, and the detection result of the circuit breaker contact claw is not accurate due to the influence of contact resistance of the handle metal frame, the bolt and the cone connector in the detection process.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem, the utility model provides an indoor handcart-type high-voltage circuit breaker return circuit resistance test specialized tool.
The utility model adopts the technical proposal that:
a special tool for testing the loop resistance of an indoor handcart type high-voltage circuit breaker comprises a handle metal frame, an insulating handle and a cone connector; the handle metal frame is an inverted isosceles trapezoid, the center of the bottom of the handle metal frame is fixedly provided with a connecting bolt, the top of the handle metal frame is sleeved with an insulating handle, and one side of the top of the handle metal frame is also provided with a current electrode wiring terminal; the number of the cone joints is a plurality, the diameters of the cone joints are different, a threaded hole matched with the connecting bolt is formed in the center of the top of each cone joint, and the cone joints can be detachably connected with the handle metal frame through the threaded holes and the connecting bolts; and the upper part of one side end face of each cone joint is also provided with a voltage pole wiring hole.
Further, the current pole terminal is a wiring bolt.
Further, the outer surface of the insulating handle is wavy.
The utility model has the advantages that:
the special tool for testing the loop resistance of the indoor handcart type high-voltage circuit breaker can effectively and reliably find the faults of contact finger overheating, ablation and the like caused by the fatigue of the contact claw spring of the indoor handcart type high-voltage circuit breaker, eliminate the faults caused by heating and insulation reduction caused by poor contact of the contact claw of the indoor handcart type high-voltage circuit breaker, and ensure the safe and stable operation of the indoor handcart type high-voltage circuit breaker.
The special tool for testing the loop resistance of the indoor handcart type high-voltage circuit breaker can thoroughly solve the problems that in the loop resistance test of the indoor handcart type high-voltage circuit breaker such as 10-35kV ABB, VEP and VS1, the conventional vice jaw cannot test and the influence on the test result caused by the fact that the good contact is difficult to ensure by pressing a test line with a hand is caused; meanwhile, the special tool for testing the loop resistance of the indoor handcart type high-voltage circuit breaker is matched with the detector, so that the problems that the appearance of a contact claw and a spring of the circuit breaker can only be checked by naked eyes manually, and the faults such as overheating and ablation of a contact finger caused by fatigue of the spring cannot be effectively found are solved.
In the process of overhauling a 10-35kV indoor handcart type high-voltage circuit breaker, the special tool for testing the loop resistance of the indoor handcart type high-voltage circuit breaker is widely applied to the loop resistance test of the indoor handcart type high-voltage circuit breaker such as 10-35kV ABB, VEP and VS1, can quickly and accurately test the local and overall loop resistance of the circuit breaker, eliminates faults such as overheating and ablation, and achieves full coverage on the loop resistance test of the high-voltage circuit breaker.
In addition, the special tool for testing the loop resistance of the indoor handcart type high-voltage circuit breaker is convenient to replace the cone, meanwhile, the influence of the contact resistance of the handle metal frame, the bolt and the cone connector in the detection process of the high-voltage handcart type circuit breaker contact claw is avoided, and the accuracy of the detection result of the circuit breaker contact claw is ensured.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
fig. 2 is a schematic view of the split structure of the present invention;
FIG. 3 is a circuit comparison diagram of the present invention with a prior art tool;
in the figures 1-2, 1-handle metal frame, 2-insulating handle, 3-cone joint, 4-connecting bolt, 5-current pole terminal, 6-voltage pole terminal hole.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without any creative effort belong to the protection scope of the present invention.
As shown in fig. 1-2, the utility model relates to a special tool for indoor handcart-type high-voltage circuit breaker loop resistance test, which comprises a handle metal frame 1, an insulating handle 2 and a cone connector 3.
Furthermore, the handle metal frame 1 is an inverted isosceles trapezoid, a connecting bolt 4 is fixedly arranged at the center of the bottom of the handle metal frame 1, the insulating handle 2 is sleeved on the top of the handle metal frame 1, and a current electrode wiring terminal 5 is further arranged on one side of the top of the handle metal frame 1.
Specifically, the number of the cone joints 3 is a plurality, the diameters of the cone joints 3 are different, a threaded hole matched with the connecting bolt 4 is formed in the center of the top of each cone joint 3, and the cone joints 3 can be detachably connected with the handle metal frame 1 through the threaded holes and the connecting bolts 4; the upper part of one side end face of each cone joint 3 is also provided with a voltage pole wiring hole 6.
When in work: firstly, selecting a proper cone connector 3 according to a contact claw of a circuit breaker, then electrically connecting a current outgoing line of a detector with a handle metal frame 1 through a current pole wiring terminal 5, and simultaneously electrically connecting a voltage outgoing line of the detector with the cone connector 3 through a current pole wiring hole; finally, inserting the cone connector 3 into the contact claw of the circuit breaker, and expanding the contact claw to connect the cone connector 3 with the contact claw of the circuit breaker, so that the contact claw of the circuit breaker, the conductive rod, the cone connector 3 and the contact of the circuit breaker form a loop; the contact condition of the conducting rod and the contact of the breaker can be detected. It should be noted that the detector is an existing detection device, and the specific structure and detection principle thereof are not described herein again.
The special tool for testing the loop resistance of the indoor handcart type high-voltage circuit breaker can effectively and reliably find the faults of contact finger overheating, ablation and the like caused by the fatigue of the contact claw spring of the indoor handcart type high-voltage circuit breaker, eliminate the faults caused by heating and insulation reduction caused by poor contact of the contact claw of the indoor handcart type high-voltage circuit breaker, and ensure the safe and stable operation of the indoor handcart type high-voltage circuit breaker.
By using the special indoor handcart type high-voltage circuit breaker loop resistance test tool, loop resistance test can be performed on indoor handcart type high-voltage circuit breaker contact claws of 10-35kV ABB, VEP, VS1 and the like by replacing a proper cone connector 3, so that the problems that a conventional vice jaw cannot be tested and the test result is influenced by the fact that a test line is difficult to ensure good contact by pressing a hand are solved; meanwhile, the special tool for testing the loop resistance of the indoor handcart type high-voltage circuit breaker is matched with the detector, so that the problems that the appearance of a contact claw and a spring of the circuit breaker can only be checked by naked eyes manually, and the faults such as overheating and ablation of a contact finger caused by fatigue of the spring cannot be effectively found are solved.
In addition, the special tool for testing the loop resistance of the indoor handcart type high-voltage circuit breaker is convenient to replace the cone, the influence of the contact resistance of the handle metal frame 1, the connecting bolt 4 and the cone connector 3 on the detection process of the contact claw of the high-voltage handcart type circuit breaker is avoided, and the accuracy of the detection result of the contact claw of the circuit breaker is ensured.
In order to further explain that the accuracy of the detection result of the special indoor handcart type high-voltage circuit breaker loop resistance test tool is superior to the prior art, as shown in fig. 3, the utility model provides a circuit comparison diagram of the special indoor handcart type high-voltage circuit breaker loop resistance test tool and the prior art tool, wherein the left side is a circuit diagram of the prior art tool, and the right side is a circuit diagram of the special indoor handcart type high-voltage circuit breaker loop resistance test tool; the circuit of a comparison graph shows that the tool in the prior art is influenced by the contact resistance of the handle metal frame 1, the connecting bolt 4 and the cone joint 3 in the detection process, and the special tool for testing the loop resistance of the indoor handcart type high-voltage circuit breaker effectively avoids the influence of the contact resistance of the handle metal frame 1, the connecting bolt 4 and the cone joint 3 by arranging the voltage pole wiring hole 6 on the cone joint 3, so that the accuracy of the detection result of the contact claw of the circuit breaker is ensured.
In another embodiment of the present invention, as shown in fig. 1-2, the current electrode terminal 5 is a wiring bolt; specifically, the current electrode terminal 5 adopts a wiring bolt to ensure the electric connection between the current outgoing line of the detector and the handle metal frame 1.
In another embodiment of the present invention, as shown in fig. 1-2, the outer surface of the insulated handle 2 is wavy; specifically, the outer surface of the insulating handle 2 is wavy, so that the insulating handle can be better held by a user.
Claims (3)
1. A special tool for testing the loop resistance of an indoor handcart type high-voltage circuit breaker comprises a handle metal frame, an insulating handle and a cone connector; the method is characterized in that: the handle metal frame is an inverted isosceles trapezoid, the center of the bottom of the handle metal frame is fixedly provided with a connecting bolt, the top of the handle metal frame is sleeved with an insulating handle, and one side of the top of the handle metal frame is also provided with a current electrode wiring terminal; the number of the cone joints is a plurality, the diameters of the cone joints are different, a threaded hole matched with the connecting bolt is formed in the center of the top of each cone joint, and the cone joints can be detachably connected with the handle metal frame through the threaded holes and the connecting bolts; and the upper part of one side end face of each cone joint is also provided with a voltage pole wiring hole.
2. The special tool for testing the loop resistance of the indoor handcart type high-voltage circuit breaker according to claim 1, wherein the special tool comprises: the current pole wiring terminal is a wiring bolt.
3. The special tool for testing the loop resistance of the indoor handcart type high-voltage circuit breaker according to claim 1, wherein: the outer surface of the insulating handle is wavy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122351371.2U CN218546869U (en) | 2021-09-27 | 2021-09-27 | Special tool for testing loop resistance of indoor handcart type high-voltage circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122351371.2U CN218546869U (en) | 2021-09-27 | 2021-09-27 | Special tool for testing loop resistance of indoor handcart type high-voltage circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218546869U true CN218546869U (en) | 2023-02-28 |
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ID=85259872
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122351371.2U Active CN218546869U (en) | 2021-09-27 | 2021-09-27 | Special tool for testing loop resistance of indoor handcart type high-voltage circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218546869U (en) |
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2021
- 2021-09-27 CN CN202122351371.2U patent/CN218546869U/en active Active
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