CN219871446U - Current test terminal wiring device - Google Patents
Current test terminal wiring device Download PDFInfo
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- CN219871446U CN219871446U CN202320973979.5U CN202320973979U CN219871446U CN 219871446 U CN219871446 U CN 219871446U CN 202320973979 U CN202320973979 U CN 202320973979U CN 219871446 U CN219871446 U CN 219871446U
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- 238000012360 testing method Methods 0.000 title claims abstract description 174
- 239000004020 conductor Substances 0.000 claims abstract description 5
- 230000003044 adaptive effect Effects 0.000 claims abstract description 3
- 238000000034 method Methods 0.000 abstract description 7
- 230000008569 process Effects 0.000 abstract description 6
- 208000027418 Wounds and injury Diseases 0.000 abstract description 3
- 230000006378 damage Effects 0.000 abstract description 3
- 208000014674 injury Diseases 0.000 abstract description 3
- 230000017105 transposition Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 4
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
Abstract
The utility model provides a current test terminal wiring device, which relates to the technical field of electric power and comprises a current test clamping piece and a plurality of test terminal wiring terminals; the current test clamp comprises a male plug and a female plug; the front part of the male plug is provided with a contact pin, the back part of the male plug is provided with a jack, the female plug is a spring leaf switch made of conductive materials, and the spring leaf switch is adaptive to the contact pin; the test terminal binding post is used for providing a binding point for a device side and a load side; the female plug is arranged between two connected test terminal binding posts; the contact pin comprises a conductive contact pin and an insulating contact pin, the spring leaf switch comprises a normally closed spring leaf switch and a normally open spring leaf switch, and the connection state of a current loop is changed by inserting the male plug into the female plug. The wiring device of the current test terminal is simple to operate, and personnel and equipment injury caused by high voltage generated by the open circuit of the current secondary circuit in the test process is avoided.
Description
Technical Field
The utility model relates to the technical field of electric power, in particular to a current test terminal wiring device.
Background
The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art.
In the running process of the power equipment, workers need to test the running on-load interval protection device regularly so as to ensure the running safety of the equipment. During the test, the staff needs to short-circuit the current load side loop by a special line firstly, and after confirming that the short-circuit wiring is correct, the current test terminal connecting piece is opened by the tester, and then the device test and verification can be carried out. And during the period that the working personnel performs short-circuit wiring and connecting piece opening of the current loop, faults easily occur to cause the open circuit of the current secondary loop, and misoperation of the protection device is caused, or the safety and orderly operation of personnel and equipment are endangered.
The existing current secondary loop opening prevention device is complex in structure or can not realize safe and reliable transposition of a current loop rapidly and is poor in universality aiming at current test of a specific protection device, so that how to realize simple and rapid current test terminal wiring and ensure safety of a test environment of the current test terminal wiring becomes a problem to be solved in the prior art.
Disclosure of Invention
In order to solve the defects in the prior art, the utility model provides a current test terminal wiring device, which realizes that a load side current loop is automatically and reliably switched to a short circuit state in a test plug-in plugging mode, and the wiring of the device side current loop is reliably switched to an open circuit non-current state. The testing efficiency is effectively improved, and personnel and equipment injuries caused by high voltage generated by the open circuit of the current secondary circuit in the testing process are avoided.
The utility model adopts the following technical scheme:
a current test terminal wiring device comprises a current test clamping piece and a plurality of test terminal wiring posts; the current test clamp comprises a male plug and a female plug; the front part of the male plug is provided with a contact pin, the back part of the male plug is provided with a jack, the female plug is a spring leaf switch made of conductive materials, and the spring leaf switch is adaptive to the contact pin; the test terminal binding post is used for providing a binding point for a device side and a load side; the female plug is arranged between two connected test terminal binding posts; the contact pin comprises a conductive contact pin and an insulating contact pin, the spring leaf switch comprises a normally closed spring leaf switch and a normally open spring leaf switch, and the connection state of a current loop is changed by inserting the male plug into the female plug.
Further, the test terminal binding post comprises a first test terminal binding post, a second test terminal binding post, a third test terminal binding post and a fourth test terminal binding post, the first test terminal binding post is connected with the third test terminal binding post, the second test terminal binding post is connected with the fourth test terminal binding post, the third test terminal binding post is connected with the fourth test terminal binding post, and the connecting part between the test terminal binding posts is provided with a female plug.
Further, the first test terminal binding post and the second test terminal binding post are both connected with the protection device to be tested, and the third test terminal binding post and the fourth test terminal binding post are both connected with the load side.
Further, the female plug arranged between the first test terminal binding post and the third test terminal binding post is a normally closed spring leaf switch, the female plug arranged between the second test terminal binding post and the fourth test terminal binding post is a normally closed spring leaf switch, and the female plug arranged between the third test terminal binding post and the fourth test terminal binding post is a normally open spring leaf switch.
Further, the male plug inserts the conductive pin into the normally open leaf spring switch conduction circuit.
Further, the male plug inserts the insulated pin into the normally closed leaf spring switch opening circuit.
Further, the contact pin is in a strip shape, and the diameter of the contact pin gradually increases from the top to the root.
Further, the top end of the contact pin is hemispherical.
Further, the spring switch comprises two spring pieces, and the spring pieces are in a wide strip shape.
Further, the jack at the back of the male plug is matched with a special wire of a test device for current test.
Compared with the prior art, the utility model has the beneficial effects that:
the utility model discloses a current test terminal wiring device which comprises a current test clamping piece, wherein the current test clamping piece is divided into a male plug and a female plug, and the transposition of a current loop wiring mode is controlled by plugging and unplugging the male plug. When the equipment device is required to be regulated, only the male plug is required to be inserted into the equipment device, so that the short circuit of the load side current loop and the open circuit state of the equipment side current loop can be realized. The utility model has simple operation, effectively improves the testing efficiency, and avoids the injury of personnel and equipment caused by high voltage generated by the open circuit of the current secondary circuit in the testing process.
Drawings
The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model.
FIG. 1 is a schematic diagram of the connection relationship of a current test terminal connection device in a test state of the present utility model;
FIG. 2 is a schematic diagram showing the connection relationship of the current test terminal connection device in the normal operation state of the present utility model
FIG. 3 is a schematic diagram of the conduction state of the current loop in the normal operation state according to the embodiment of the utility model;
FIG. 4 is a schematic diagram of a current loop in a test state according to an embodiment of the present utility model;
in the figure: 1. the protection device, the load side, the female plug, the normally closed spring leaf switch, the normally open spring leaf switch, the male plug, the insulating pin, the conductive pin, the test terminal binding post and the test terminal binding post are respectively arranged on the load side, the female plug, the normally closed spring leaf switch, the normally open spring leaf switch, the male plug, the insulating pin and the test terminal binding post, 5-1, 5-2, 5-3, 5-4, 6, 7, special wire.
Detailed Description
The utility model will be further described with reference to the drawings and examples.
The terms "mounted," "connected," "secured," and the like are to be construed broadly and refer to either a fixed connection, a removable connection, or an integral body, for example; the terms "mechanically coupled" and "directly coupled" may be used interchangeably to refer to either a mechanical coupling, an indirect coupling via an intermediary, an internal coupling of two elements, or an interaction of two elements, as would be understood by one of ordinary skill in the art, and the terms are to be understood in the specific sense of the present utility model as appropriate.
Examples
The current test terminal is composed of movable track connecting piece and connecting terminal fixing end, and the movable track is required to be in a linked state and fastened during normal operation. The test phase should short-circuit the load side current in advance to perform the movable track opening operation. However, during the period that the working personnel conduct current loop termination wiring and connecting piece opening, errors easily occur to cause the current secondary loop to open, and the safety and orderly operation of personnel and equipment are endangered.
The utility model provides a wiring device for a current test terminal, which comprises a current test clamping piece and a plurality of test terminal wiring posts 5, wherein the current test clamping piece is arranged on the wiring device; the current testing clamp comprises a male plug 4 and a female plug 3, and the male plug 4 and the female plug 3 are similar to the aviation plug of the circuit breaker in form; the front part of the male plug 4 is provided with a pin, the back part of the male plug is provided with a jack, the pin is in a strip shape, the diameter of the pin is gradually increased from the top end to the root end, the male plug is convenient to insert between spring pieces of the female plug, the contact surface is increased for facilitating current conduction, and the top end of the pin is provided with a hemispherical shape. The female plug is the spring leaf switch of being made by conductive material, and the spring leaf switch includes two spring leaves, and the spring leaf is wide strip shape, has good conductivility, and sufficient area of contact ensures the switch-on of electric current when two spring leaves contact, has sufficient mechanical properties, can not take place problem such as burn because of the contact failure.
The contact pin comprises a conductive contact pin 4-1 and an insulating contact pin 4-2, the conductive contact pin 4-1 is made of a conductive material, the insulating contact pin 4-2 is made of an insulating material, the spring piece switch comprises a normally closed spring piece switch 3-1 and a normally open spring piece switch 3-2, and two spring pieces of the normally open spring piece switch 3-2 are not contacted. The two spring pieces of the normally closed spring piece switch 3-1 are always contacted, the two spring pieces are not contacted after the male plug is inserted, and the two spring pieces are contacted again after the male plug is pulled out through elastic resilience. The connection state of the current loop is changed by inserting the male plug into the female plug. The spring leaf switch is adapted to the contact pin, the male plug can insert the contact pin between two spring leaves, and the connection state of the circuit is changed; the male plug inserts the conductive pin into the normally open spring switch conduction circuit. The male plug inserts the insulated pin into the normally closed leaf spring switch opening circuit.
The test terminal post 5 is used for providing a connection point for the device side and the load side 2; as shown in fig. 1, the device side refers to a protection device 1 and a test device 6 for current test, the load side 2 refers to a secondary coil of a current transformer, and a female plug is arranged between two connected test terminal binding posts 5; the connection state of the current loop is changed by inserting the male plug into the female plug.
In this embodiment, as shown in fig. 2, the test terminal post 5 includes a first test terminal post 5-1, a second test terminal post 5-2, a third test terminal post 5-3 and a fourth test terminal post 5-4, the first test terminal post 5-1 is connected with the third test terminal post 5-3, the second test terminal post 5-2 is connected with the fourth test terminal post 5-4, the third test terminal post 5-3 is connected with the fourth test terminal post 5-4, the connection portions between the test terminal posts 5 are all provided with female plugs, wherein the female plugs arranged between the first test terminal post and the third test terminal post are normally closed spring leaf switches, the female plugs arranged between the second test terminal post and the fourth test terminal post are normally closed spring leaf switches, and the female plugs arranged between the third test terminal post and the fourth test terminal post are normally open spring leaf switches. The first test terminal binding post and the second test terminal binding post are both connected with the anode and the cathode of the protection device to be tested, and the third test terminal binding post and the fourth test terminal binding post are both connected with the anode and the cathode of the load side. As shown in fig. 1, the positive and negative electrodes of the test device connect the first test terminal post and the second test terminal post during the test.
The male plug has no external lead, and after the male plug is inserted into the female plug during testing, the load side is short-circuited through the configured conductive contact pins, and the device side is broken through the insulating column. The jack at the back of the male plug is matched with a special wire 7 of a test device for current test. The special wire is connected with the test device, and the test device is connected with the device to be tested through the special wire to perform current test. After the male plug is inserted into the female plug, the jack can be reliably connected with the terminal post of the load side test terminal, so that a special test wire can be directly inserted into the jack for device test.
In the embodiment, the current loop load side inflow cable is connected to the terminal post of the test terminal according to the clamp mark, as shown in fig. 3 and 4, so that the current test of a plurality of protection devices can be realized at the same time. The female plug is fixedly arranged on the test platform, and the transposition of the current loop wiring mode is controlled through the plug insertion and the plug extraction of the male plug. In the normal operating state, as shown in fig. 3, the load side current forms a reliably closed loop through the female plug, the protection device when the male plug is not inserted. In the test state, as shown in fig. 4, when the male plug is fully inserted, the load side circuit and the device side current loop are isolated by the male plug insulating pin, and each phase current of the load side is terminated with the corresponding N phase, and the device side current loop is in an open state. In the male plug inserting process, the load side current loop is in a short circuit state in advance due to the fact that the conductive contact pin is inserted into the normally open spring piece switch, after the load side current loop is in the short circuit state, the transposition current loop is in a closed transposition open circuit state along with the fact that the male plug insulation contact pin is continuously inserted into other normally closed spring piece switches, and the loop transposition dynamic process is safe and reliable. The principle of short circuit and open circuit state transposition is that the short circuit is firstly followed by open circuit, so that the normally open spring leaf switch of the conductive contact pin is firstly inserted, and then the insulating contact pin is inserted into the rest normally closed spring leaf switches. After the male plugs are fully inserted, the test device can be connected for current test.
When the current test terminal connection device in this embodiment is used, it is first necessary for a worker to be able to correctly identify the test circuit and to be able to correctly use the test instrument. The male plug must be properly stored and protected, and the male plug pins should not be damaged. The quality of the connecting spring connecting piece of the female plug is enough to ensure reliable transition between the on state and the off state. Based on this, this example gives a test specific procedure:
1) And preparing an aviation male plug matched with the female plug fixed on the test platform.
2) The male plug is inserted into the female plug current loop that is scheduled for testing.
3) And (3) correctly connecting wiring of a test instrument, and inserting a test current wire into the male plug wiring terminal to perform test work.
4) The test results were recorded correctly and well.
5) And closing the power supply of the test instrument after the test is ended, and pulling out the current test wire.
6) And (5) pulling out the male plug to finish the test.
Compared with the traditional current test terminal wiring mode, the current test terminal wiring device is simpler and more reliable in operation, and test preparation work can be completed only by inserting and extracting the clamping piece. The hidden trouble of improper fastening and operation during the current loop open circuit or the wire recovery caused by the conventional current testing terminal is avoided.
It should be noted that, the foregoing description is only a preferred embodiment of the present utility model, and although the present utility model has been described in detail with reference to the foregoing embodiment, it will be apparent to those skilled in the art that modifications may be made to the technical solutions described in the foregoing embodiments, or equivalents may be substituted for some of the technical features thereof, and any modifications, equivalents, improvements or changes thereof may be made without departing from the spirit and principle of the present utility model.
Claims (10)
1. The current test terminal wiring device is characterized by comprising a current test clamping piece and a plurality of test terminal wiring posts; the current test clamp comprises a male plug and a female plug; the front part of the male plug is provided with a contact pin, the back part of the male plug is provided with a jack, the female plug is a spring leaf switch made of conductive materials, and the spring leaf switch is adaptive to the contact pin; the test terminal binding post is used for providing a binding point for a device side and a load side; the female plug is arranged between two connected test terminal binding posts; the contact pin comprises a conductive contact pin and an insulating contact pin, the spring leaf switch comprises a normally closed spring leaf switch and a normally open spring leaf switch, and the connection state of a current loop is changed by inserting the male plug into the female plug.
2. The current testing terminal connection device according to claim 1, wherein the testing terminal connection terminals include a first testing terminal connection terminal, a second testing terminal connection terminal, a third testing terminal connection terminal, and a fourth testing terminal connection terminal, the first testing terminal connection terminal is connected with the third testing terminal connection terminal, the second testing terminal connection terminal is connected with the fourth testing terminal connection terminal, the third testing terminal connection terminal is connected with the fourth testing terminal connection terminal, and the connection portions between the testing terminal connection terminals are all provided with female plugs.
3. A current testing terminal connection device according to claim 2, wherein the first testing terminal post and the second testing terminal post are each connected to a protection device to be tested, and the third testing terminal post and the fourth testing terminal post are each connected to a load side.
4. The current testing terminal wiring device of claim 2, wherein the female plug disposed between the first testing terminal post and the third testing terminal post is a normally closed spring leaf switch, the female plug disposed between the second testing terminal post and the fourth testing terminal post is a normally closed spring leaf switch, and the female plug disposed between the third testing terminal post and the fourth testing terminal post is a normally open spring leaf switch.
5. A current testing terminal connection device according to claim 1, wherein said male plug inserts conductive pins into a normally open leaf spring switch conduction circuit.
6. A current testing terminal connection device according to claim 1, wherein said male plug inserts an insulated pin into a normally closed leaf spring switch to open the circuit.
7. A current testing terminal connection device according to claim 1, wherein said pin is in the shape of a strip, and the diameter of said pin increases gradually from the tip to the root.
8. A current testing terminal connection device according to claim 1, wherein the tip of the pin is hemispherical.
9. A current testing terminal connection device according to claim 1, wherein said leaf switch comprises two leaf springs, said leaf springs being in the shape of a wide strip.
10. A current testing terminal connection device according to claim 1, wherein the jack on the back of the male plug is matched with a test device specific wire for current testing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320973979.5U CN219871446U (en) | 2023-04-23 | 2023-04-23 | Current test terminal wiring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320973979.5U CN219871446U (en) | 2023-04-23 | 2023-04-23 | Current test terminal wiring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219871446U true CN219871446U (en) | 2023-10-20 |
Family
ID=88319342
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320973979.5U Active CN219871446U (en) | 2023-04-23 | 2023-04-23 | Current test terminal wiring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219871446U (en) |
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2023
- 2023-04-23 CN CN202320973979.5U patent/CN219871446U/en active Active
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