CN213364942U - Withstand voltage test tool for ring main unit - Google Patents
Withstand voltage test tool for ring main unit Download PDFInfo
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- CN213364942U CN213364942U CN202022326015.0U CN202022326015U CN213364942U CN 213364942 U CN213364942 U CN 213364942U CN 202022326015 U CN202022326015 U CN 202022326015U CN 213364942 U CN213364942 U CN 213364942U
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Abstract
Withstand voltage test tool of looped netowrk cabinet. The utility model relates to an electric power system test tool technical field, concretely relates to withstand voltage test tool of looped netowrk cabinet. The voltage-withstanding test tool for the ring main unit is convenient to operate, reliable in insulation and high in applicability. The utility model discloses a withstand voltage test tool of looped netowrk cabinet to the T type of the ordinary cable of market connects as the basis carries out the simulation design of "keeping somewhere needle" formula test tool, connects a horizontal interface connection cable interface of T type, the perpendicular interface connection test cable that T type connects, and another horizontal interface that T type connects is used for connecting insulating plug or experimental conductor. The utility model discloses still consider the commonality of experimental conductor, set up the toper section at its link for the T type that matches different specifications connects. The utility model discloses an experimental tool easily prepares, and the structure is exquisite, and the suitability is strong, has wide market prospect.
Description
Technical Field
The utility model relates to an electric power system test tool technical field, concretely relates to withstand voltage test tool of looped netowrk cabinet.
Background
The ring main unit, namely an outgoing line switch cabinet in a ring power system, is used for connecting and controlling the power supply of electrical equipment connected to a ring network, and a plurality of cable interfaces connected with the electrical equipment are arranged in the ring main unit. The ring main unit is widely used in an electric power system and a city distribution network, the insulation condition of the ring main unit directly influences the safe operation of power generation, power supply and power distribution of the electric power system, and therefore a voltage-resistant electrical test should be carried out on the ring main unit according to requirements so as to find defects in time and eliminate the defects and guarantee the safe operation of a power grid.
With the increasing application of 10kV cable lines in distribution networks, the lengths of single cables are not suitable to be too long in consideration of cable transportation and urban development layout, and accordingly the number of ring main units is increased; and because the ring main units are all in a full-closed type, a suitable test place is difficult to find during a pressure test, so that multipoint and sectional pressurization are needed, and the test time is increased. On the other hand, as the interval between the cable interfaces of the ring main unit is only 10CM, the distance between the center of the interface and the metal plate at the top of the ring main unit is only 7CM, and the distance between the center of the interface and the side plate of the interface is only 5.5CM, when the equipment is subjected to a voltage withstand test on site, the metal plate of the cabinet body is discharged in the voltage boosting process, so that the test fails, and the personal safety of the equipment and operators is endangered.
In the prior art, when a voltage withstand test is performed on a ring main unit, an insulating plate is cut into four insertion pieces according to the interval size of the ring main unit, the cable interface of a tested cabinet body is insulated at four positions, namely, the upper position, the lower position, the left position and the right position, and magnets are arranged on the insertion pieces and fixed on the cabinet body. However, the testing method has poor insulation reliability, so that the testing equipment is operated repeatedly, and the working hours are wasted.
Therefore, it is a technical problem to be solved urgently to design a testing tool which is suitable for rapid and multi-point testing of the ring main unit and is reliable in insulation.
Disclosure of Invention
The utility model provides an above problem, provide an operation facility, insulating reliable and suitability strong looped netowrk cabinet withstand voltage test instrument.
The technical scheme of the utility model is that:
the ring main unit voltage withstand test tool is used for connecting a cable interface in the ring main unit and comprises a T-shaped joint, an insulating plug and a test conductor,
the T-shaped joint is provided with a horizontal interface A, a horizontal interface B and a vertical interface C, the horizontal interface A is connected with the cable interface, and the vertical interface C is used for connecting a test cable;
the shape of the insulating plug is matched with that of the T-shaped joint, and the insulating plug is movably connected with the horizontal interface B;
the testing conductor is in a long strip shape and is provided with a connecting end a and a testing end B, an insulating layer is sleeved on the testing conductor, the connecting end a is movably connected with the horizontal interface B, and the testing end B is movably connected with the voltage-withstanding testing equipment.
Further, the connection end a of the test conductor is provided with a tapered section.
Furthermore, the testing end b of the testing conductor is provided with a plate-shaped testing joint, and the testing joint is provided with a through hole.
Further, the length of the test conductor is 550 mm.
Further, the length of the tapered section is 60 mm.
Furthermore, a hanging rope is arranged on the insulating plug, and a hook for hanging the hanging rope is arranged on the T-shaped joint.
The utility model discloses a withstand voltage test tool of looped netowrk cabinet to the T type of the ordinary cable of market connects as the basis carries out the simulation design of "keeping somewhere needle" formula test tool, connects a horizontal interface connection cable interface of T type, the perpendicular interface connection test cable that T type connects, and another horizontal interface that T type connects is used for connecting insulating plug or experimental conductor.
Specifically, when the power grid normally operates, the horizontal interface is plugged by an insulating plug; during the withstand voltage test of electric wire netting, pull out the insulating plug and insert horizontal interface with experimental conductor, extend the wiring end of cable interface to the cabinet body outside, ensured the reliable insulating of the cabinet body, reduced experimental preparation time simultaneously to effectively reduced withstand voltage test's the operation degree of difficulty and operating time, the material resources of using manpower sparingly.
The utility model discloses still consider the commonality of experimental conductor, set up the toper section at its link for the T type that matches different specifications connects. The utility model discloses an experimental tool easily prepares, and the structure is exquisite, and the suitability is strong, has wide market prospect.
Drawings
Figure 1 is a schematic view of the assembly of the present invention during normal power supply,
FIG. 2 is a schematic view of the assembly of the present invention during the pressure resistance test,
fig. 3 is a schematic structural diagram of the middle test conductor of the present invention.
In the figure, a 1-T-shaped joint, an 11-hook, an A-horizontal interface, a B-horizontal interface and a C-vertical interface are arranged; 2-insulating plug, 21-hanging rope; 3-test conductor, 31-taper section, 32-test joint, 320-through hole, a-connecting end and b-test end.
Detailed Description
The present invention will be further described with reference to the accompanying drawings 1-3. The utility model relates to a withstand voltage test tool of a ring main unit, which is used for connecting a cable interface in the ring main unit and comprises a T-shaped joint 1, an insulating plug 2 and a test conductor 3,
the T-shaped joint 1 is provided with a horizontal interface A, a horizontal interface B and a vertical interface C, wherein the horizontal interface A is connected with a cable interface, and the vertical interface C is used for connecting a test cable;
the shape and the size of the insulating plug 2 are matched with the horizontal interface B of the T-shaped joint 1, and the insulating plug 2 is movably connected to the horizontal interface B;
the test conductor 3 is in a strip shape and is provided with a connecting end a and a test end B, the test conductor 3 is sleeved with an insulating layer 30, the connecting end a is movably connected with the horizontal interface B, and the test end B extends out of the insulating layer 30 and is movably connected with a voltage-withstanding test device (a commercially available common test device). In a normal state, the insulating plug 2 seals the horizontal interface B; during the withstand voltage test, the insulating plug 2 is removed, the connecting end a of the test conductor 3 is connected with the test cable, then the test cable is in butt joint with the horizontal interface B, the test end B is connected with withstand voltage test equipment, the electrical performance of the ring main unit is tested, and after the test is finished, the horizontal interface B is sealed by the insulating plug 2 again.
The connecting end a of the test conductor 3 is provided with a conical section 31, and the conical section 31 is used for matching the T-shaped connectors 1 with different specifications and improving the applicability of the test conductor 3.
The test end b of the test conductor 3 is provided with a plate-shaped test connector 32, the test connector 32 is provided with a through hole 320, and the through hole 320 is used for conveniently realizing the electrical connection between the test conductor 3 and the withstand voltage test equipment.
The length of the test conductor 3 is 550mm, and the test point extends to the outside of the ring main unit, so that the discharge phenomenon is effectively avoided.
The length of toper section 31 is 60mm, can effectively match the T type of common specification and connect 1, improves experimental conductor 3's applicable scope.
The insulating plug 2 is provided with a hanging rope 21, the T-shaped joint 1 is provided with a hook 11 for hanging the hanging rope 21, and the hanging rope is used for accommodating the insulating plug 2 in a voltage withstand test.
The disclosure of the present application also includes the following points:
(1) the drawings of the embodiments disclosed herein only relate to the structures related to the embodiments disclosed herein, and other structures can refer to general designs;
(2) in case of conflict, the embodiments and features of the embodiments disclosed in this application can be combined with each other to arrive at new embodiments;
the above embodiments are only examples disclosed in the present application, but the scope of the present disclosure is not limited thereto, and those skilled in the art should be able to change some of the technical features of the present disclosure within the scope of the present application.
Claims (6)
1. A ring main unit voltage withstand test tool is used for connecting a cable interface in a ring main unit and is characterized in that the test tool comprises a T-shaped joint, an insulating plug and a test conductor,
the T-shaped joint is provided with a horizontal interface A, a horizontal interface B and a vertical interface C, the horizontal interface A is connected with the cable interface, and the vertical interface C is used for connecting a test cable;
the shape of the insulating plug is matched with that of the T-shaped joint, and the insulating plug is movably connected with the horizontal interface B;
the testing conductor is in a long strip shape and is provided with a connecting end a and a testing end B, an insulating layer is sleeved on the testing conductor, the connecting end a is movably connected with the horizontal interface B, and the testing end B is movably connected with the voltage-withstanding testing equipment.
2. The ring main unit withstand voltage test tool according to claim 1, wherein the connecting end a of the test conductor is provided with a tapered section.
3. The ring main unit withstand voltage test tool according to claim 1, wherein the test end b of the test conductor is provided with a plate-shaped test connector, and the test connector is provided with a through hole.
4. The ring main unit withstand voltage test tool of claim 1, wherein the length of the test conductor is 550 mm.
5. The ring main unit withstand voltage test tool according to claim 2, wherein the length of the tapered section is 60 mm.
6. The ring main unit withstand voltage test tool according to claim 1, wherein a hanging rope is provided on the insulating plug, and a hook for hanging the hanging rope is provided on the T-shaped joint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022326015.0U CN213364942U (en) | 2020-10-19 | 2020-10-19 | Withstand voltage test tool for ring main unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022326015.0U CN213364942U (en) | 2020-10-19 | 2020-10-19 | Withstand voltage test tool for ring main unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213364942U true CN213364942U (en) | 2021-06-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022326015.0U Active CN213364942U (en) | 2020-10-19 | 2020-10-19 | Withstand voltage test tool for ring main unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213364942U (en) |
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2020
- 2020-10-19 CN CN202022326015.0U patent/CN213364942U/en active Active
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