CN210779047U - Short-circuit piece of high-arch low-metering current transformer - Google Patents
Short-circuit piece of high-arch low-metering current transformer Download PDFInfo
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- CN210779047U CN210779047U CN201922327553.9U CN201922327553U CN210779047U CN 210779047 U CN210779047 U CN 210779047U CN 201922327553 U CN201922327553 U CN 201922327553U CN 210779047 U CN210779047 U CN 210779047U
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- 239000002184 metal Substances 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 238000010276 construction Methods 0.000 abstract description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 239000011810 insulating material Substances 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
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Abstract
The utility model discloses a short splicing piece of a high-arch low-metering current transformer, which comprises a fixing screw, a first short splicing column, a second short splicing column, a first short splicing piece and a second short splicing piece; the circular through holes of the first shorting tab and the second shorting tab are aligned; the front end of the stud penetrates through the circular through hole; the stud is provided with a first C-shaped spring piece positioned between the front end of the stud and the second short connecting piece; a first spring sleeved on the stud is arranged between the first short connecting sheet positioned at the upper part of the second short connecting sheet and the rear end of the stud; the first short-circuit cylinder and the second short-circuit cylinder respectively penetrate through the first strip-shaped through hole and the second strip-shaped through hole. The utility model discloses change current operation mode, improve the power supply quality, improve work efficiency, reduce work flow, reduce because of the unable construction cost who trades the table increase that leads to of having a power failure.
Description
Technical Field
The utility model belongs to the technical field of electric power measuring equipment, in particular to height encircles short splicing of low meter current transformer.
Background
And when the current transformer works, the secondary side of the current transformer is not allowed to be open. If the secondary side is open-circuited, the magnetic flux in the iron core is increased sharply, the iron core is saturated seriously, and high voltage or even ten thousand volts is generated on the secondary winding, so that the secondary winding has great danger to workers and equipment in a secondary loop. Meanwhile, the iron core is overheated to damage insulation due to the sharp increase of the magnetic induction intensity and the iron loss of the iron core.
In reality, part of users do not have terminal boxes, and only power failure operation can be performed on the users needing to change the meter, so that the users need to perform power failure operation about the time, the construction period is increased, and the construction cost is increased. For a user mounting the terminal box, only the line electric meter behind the terminal box can be checked, and the terminal box and the front part of the line of the terminal box cannot be actually operated. The inspection can only be carried out in a power failure mode, so that the power supply quality is reduced, and the customer service order is increased.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a short contact piece of a high-arch low-count current transformer to solve the technical problem; adopt the utility model discloses the structure can be changed user's table meter under the circumstances that once does not have a power failure, inspects the secondary equipment and changes under the circumstances that once does not have a power failure.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the short connecting piece of the high-arch low-count current transformer comprises a fixing screw, a first short connecting column, a second short connecting column, a first short connecting piece and a second short connecting piece; the fixing screw comprises a stud, and the front end of the stud is provided with an external thread; the first short-circuit column and the second short-circuit column are identical in structure and different in length; the first short connecting piece and the second short connecting piece have the same structure and are rectangular metal pieces; a first strip-shaped through hole is formed in the first short tab, and a first circular threaded hole is formed beside the first strip-shaped through hole; a second strip-shaped through hole is formed in the second short tab, and a second circular threaded hole is formed beside the second strip-shaped through hole; the first and second circular through holes of the first and second shorting tabs are aligned; the front end of the stud penetrates through the first circular through hole and the second circular through hole; the stud is provided with a first C-shaped spring piece positioned between the front end of the stud and the second short connecting piece; a first spring sleeved on the stud is arranged between the first short connecting sheet positioned at the upper part of the second short connecting sheet and the rear end of the stud; the first short-circuit column body and the second short-circuit column body respectively penetrate through the first strip-shaped through hole and the second strip-shaped through hole; the first short-circuit cylinder and the second short-circuit cylinder are respectively provided with a second C-shaped spring piece and a third C-shaped spring piece; a second spring sleeved on the periphery of the first short-circuit cylinder is arranged between the second C-shaped spring piece and the first short-circuit piece; and a third spring sleeved on the periphery of the second short-circuit cylinder is arranged between the third C-shaped spring piece and the second short-circuit piece.
Furthermore, the rear end of the stud is an insulating operation part with the diameter larger than the diameter of the stud and the diameter of the first spring.
Furthermore, the first round through hole and the second round through hole are fastened together through a first hollow screw, and the front end of the stud penetrates through the center of the first hollow screw.
Furthermore, a second hollow screw and a third hollow screw are respectively arranged in the first strip-shaped through hole and the second strip-shaped through hole; and the first short-circuit column body and the second short-circuit column body respectively pass through the centers of the second hollow screw and the third hollow screw.
Furthermore, the first short-circuit column comprises a first short-circuit column body, the front end of the first short-circuit column body is in a cross screwdriver shape, and the rear end of the first short-circuit column body is provided with a first cross nut; the second short circuit post includes the second short circuit cylinder, and the front end of second short circuit cylinder is cross screwdriver shape, and the rear end is the second cross nut.
Further, the length of the first short-circuit cylinder is larger than that of the second short-circuit cylinder.
Furthermore, the front end of the fixing screw is fixed on the current transformer in a threaded manner, and the first short-circuit column and the second short-circuit column are respectively in contact with two wiring screws of the current transformer; two wiring screws of the current transformer are in short circuit through the first short connecting column, the first short connecting sheet, the second short connecting sheet and the second short connecting column in sequence.
Furthermore, the current transformer is an elevation angle type current transformer or a straight-through type current transformer.
Compared with the prior art, the utility model discloses following beneficial effect has:
the utility model discloses in, two contacts of first shorting post and second shorting post front end are cross screwdriver contact, can operate the CT terminal, make the convenient dismantlement of secondary line, and the CT short connector piece sets up the bar hole, and for adjustable, can carry out the short circuit to not unidimensional, the terminal of different angles. In order to improve the tightness of each part, the spring is adopted for compressing, and meanwhile, the adjustment is convenient. The tab portion may be provided with an insulating material to increase worker safety.
The utility model discloses change current operation mode, improve the power supply quality, improve work efficiency, reduce work flow, reduce because of the unable construction cost who trades the table increase that leads to of having a power failure.
Drawings
The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic structural view of a short contact piece of a high-arch low-count current transformer of the present invention;
FIG. 2 is a schematic structural view of a fixing screw;
FIG. 3 is a schematic structural view of a shorting tab;
FIG. 4 is a schematic structural view of a first shorting post and a second shorting post;
fig. 5 is a schematic structural view of a cannulated screw.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
The following detailed description is exemplary in nature and is intended to provide further details of the invention. Unless otherwise defined, all technical terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the invention.
Referring to fig. 1 to 5, the present invention provides a short contact piece for a high-arch low-voltage current transformer, which includes a fixing screw 1, a first short contact post 2, a second short contact post 3, a first short contact piece 4 and a second short contact piece 5.
The fixing screw 1 comprises a stud 10, the front end of the stud 10 is provided with an external thread 12, and the rear end is provided with an insulating operation part 11; the stud 10 is further provided with a groove for mounting a first C-shaped spring piece 13.
The first short connecting column 2 and the second short connecting column 3 have the same structure and different lengths; the first short-circuit column 2 comprises a first short-circuit column body 20, the front end of the first short-circuit column body 20 is in a cross screwdriver shape, and the rear end of the first short-circuit column body 20 is provided with a cross nut 21; the screw pressing device is used for pressing the screw to conveniently detach the lead on the CT terminal. The second short-circuit column 3 is shorter than the first short-circuit column 2 and comprises a second short-circuit column body 30, the front end of the second short-circuit column body 30 is in a cross screwdriver shape, and the rear end of the second short-circuit column body is in a cross nut 31 shape; the screw pressing device is used for pressing the screw to conveniently detach the lead on the CT terminal.
The first short connecting piece 4 and the second short connecting piece 5 are identical in structure and are both rectangular metal sheets. A strip-shaped through hole 41 is formed in the first short connecting piece 4, and a circular threaded hole 40 is formed beside the strip-shaped through hole 41; the second short connecting piece 5 is provided with a strip-shaped through hole 51, and a circular threaded hole 50 is formed beside the strip-shaped through hole 51.
The utility model relates to a short contact piece of a high-arch low-counter current transformer, wherein strip-shaped through holes 41 and 51 of a first short contact piece 4 and a second short contact piece 5 are aligned and are in threaded connection with a circular through hole 40 and a circular through hole 50 through a first hollow screw 7, so that the first short contact piece 4 and the second short contact piece 5 are fixed; the front end of a stud 10 of the fixing screw 1 penetrates through the center of the first hollow screw 7 and is fastened to the CT through an external thread 12, so that the fastening effect is achieved; the insulating operation part 11 of the fixing screw 1 is convenient to operate; then, a first C-shaped spring piece 13 is arranged in a groove of the stud 10 of the fixing screw 1, and the first C-shaped spring piece 13 is positioned at the lower parts of the first short connecting piece 4 and the second short connecting piece 5; a first spring 61 sleeved on the stud 10 is arranged between the top platform of the first hollow screw 7 and the insulating operation part 11; the first spring 61 is used to press-fit the first and second shorting tabs 4 and 5 firmly to the first C-shaped spring piece 13.
The strip-shaped through hole 41 and the strip-shaped through hole 51 are respectively provided with a second hollow screw and a third hollow screw, the first short-circuit column body 20 and the second short-circuit column body 30 respectively penetrate through the strip-shaped through hole 41 and the strip-shaped through hole 51, and the first short-circuit column body 20 and the second short-circuit column body 30 are respectively provided with a second C-shaped spring piece and a third C-shaped spring piece; a second spring 62 sleeved on the periphery of the first short-circuit column body 20 is arranged between the second C-shaped spring piece and the first short-circuit connecting piece 4; a third spring 63 sleeved on the periphery of the second short-circuit cylinder 30 is arranged between the third C-shaped spring piece and the second short-circuit piece 5 and used for enabling the cross screwdriver-shaped front ends of the first short-circuit cylinder 20 and the second short-circuit cylinder 30 to be in close contact with two wiring screws of the CT.
The utility model relates to a height encircles short splicing of low meter current transformer, during the use, adjust the position of second hollow screw and third hollow screw, align two wiring screws of CT and fasten, then install set screw 1, first shorting post 2, second shorting post 3; the first and second short connecting columns 2 and 3 are fastened to the CT through the external thread 12 at the front end of the stud 10 of the fixing screw 1, and correspond to two wiring screw positions of the CT and are in elastic close contact with the two wiring screws of the CT under the action of the second spring 62 and the third spring 63. Two binding screws of CT loop through first shorting post 2, first shorting tab 4, second shorting tab 5 and the short circuit of second shorting post 3 like this, are convenient for change user's table meter under the circumstances that once does not have a power failure, inspect the secondary equipment and change under the circumstances that once does not have a power failure.
In the utility model, two contacts at the front ends of the first short post 2 and the second short post 3 are cross screwdriver contacts, which can operate the CT terminal to facilitate the disassembly of the secondary wire,
CT short connector piece sets up the bar hole, for adjustable, can carry out the short circuit to not unidimensional, the terminal of different angles.
In order to improve the tightness of each part, the spring is adopted for compressing, and meanwhile, the adjustment is convenient.
The tab portion may be provided with an insulating material to increase worker safety. The utility model discloses the structure can be applicable to the elevation angle CT and the straight-through CT of height encircleing the low meter.
It will be appreciated by those skilled in the art that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The embodiments disclosed above are therefore to be considered in all respects as illustrative and not restrictive. All changes which come within the scope of the invention or which are equivalent to the scope of the invention are embraced by the invention.
Claims (8)
1. The short connecting piece of the high-arch low-count current transformer is characterized by comprising a fixing screw (1), a first short connecting column (2), a second short connecting column (3), a first short connecting piece (4) and a second short connecting piece (5);
the fixing screw (1) comprises a stud (10), and the front end of the stud (10) is provided with an external thread (12);
the first short connecting column (2) and the second short connecting column (3) have the same structure and different lengths;
the first short connecting piece (4) and the second short connecting piece (5) have the same structure and are both rectangular metal sheets; a first strip-shaped through hole (41) is formed in the first short connecting piece (4), and a first round threaded hole (40) is formed beside the first strip-shaped through hole; a second strip-shaped through hole (51) is formed in the second short connecting piece (5), and a second circular threaded hole (50) is formed in the side of the second strip-shaped through hole;
the first and second circular through holes of the first and second shorting tabs are aligned; the front end of the stud (10) penetrates through the first circular through hole and the second circular through hole; a first C-shaped spring piece (13) positioned between the front end of the stud (10) and the second short joint piece is arranged on the stud (10); a first spring (61) sleeved on the stud (10) is arranged between the first short connecting sheet positioned at the upper part of the second short connecting sheet and the rear end of the stud (10);
the first short-circuit column body (20) and the second short-circuit column body (30) respectively penetrate through the first strip-shaped through hole (41) and the second strip-shaped through hole (51); the first short-circuit cylinder and the second short-circuit cylinder are respectively provided with a second C-shaped spring piece and a third C-shaped spring piece; a second spring (62) sleeved on the periphery of the first short-circuit column body is arranged between the second C-shaped spring piece and the first short-circuit piece; a third spring (63) sleeved on the periphery of the second short-circuit cylinder is arranged between the third C-shaped spring piece and the second short-circuit piece.
2. A high camber low gauge current transformer shorting tab according to claim 1, characterized in that the rear end of the stud (10) is an insulated handling section (11) having a diameter larger than the diameter of the stud and the first spring diameter.
3. The short tab of high and low dome current transformer according to claim 1, wherein the first circular through hole and the second circular through hole are fastened together by a first hollow screw, the front end of the stud (10) passing through the center of the first hollow screw.
4. The short tab of high-arch low-count current transformer according to claim 1, wherein a second hollow screw and a third hollow screw are respectively installed in the first strip through hole (41) and the second strip through hole (51); the first short-circuit cylinder (20) and the second short-circuit cylinder (30) respectively penetrate through the centers of the second hollow screw and the third hollow screw.
5. The short tab of the high-arch low-count current transformer according to claim 1, characterized in that the first short post (2) comprises a first short post body (20), the front end of the first short post body (20) is in a cross screwdriver shape, and the rear end is a first cross nut (21); the second short-circuit column (3) comprises a second short-circuit column body (30), the front end of the second short-circuit column body (30) is in a cross screwdriver shape, and the rear end of the second short-circuit column body is provided with a second cross nut (31).
6. A high camber low gauge current transformer shorting tab according to claim 1, wherein the length of the first shorting post (20) is greater than the length of the second shorting post (30).
7. The short tab of the high-arch low-count current transformer according to claim 1, wherein the front end of the fixing screw (1) is fixed on the current transformer in a threaded manner, and the first short tab (2) and the second short tab (3) are respectively contacted with two wiring screws of the current transformer; two wiring screws of the current transformer are in short circuit sequentially through the first short connecting column (2), the first short connecting sheet (4), the second short connecting sheet (5) and the second short connecting column (3).
8. The high camber low gauge current transformer shorting tab of claim 1, wherein the current transformer is an elevation type current transformer or a feedthrough type current transformer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922327553.9U CN210779047U (en) | 2019-12-20 | 2019-12-20 | Short-circuit piece of high-arch low-metering current transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922327553.9U CN210779047U (en) | 2019-12-20 | 2019-12-20 | Short-circuit piece of high-arch low-metering current transformer |
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| Publication Number | Publication Date |
|---|---|
| CN210779047U true CN210779047U (en) | 2020-06-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922327553.9U Active CN210779047U (en) | 2019-12-20 | 2019-12-20 | Short-circuit piece of high-arch low-metering current transformer |
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| Country | Link |
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| CN (1) | CN210779047U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114062811A (en) * | 2021-11-12 | 2022-02-18 | 山东电工电气集团智能电气有限公司 | Universal low-voltage sleeve terminal quick short-circuit device for distribution transformer load test |
-
2019
- 2019-12-20 CN CN201922327553.9U patent/CN210779047U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114062811A (en) * | 2021-11-12 | 2022-02-18 | 山东电工电气集团智能电气有限公司 | Universal low-voltage sleeve terminal quick short-circuit device for distribution transformer load test |
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