CN212586537U - Equal ampere-turn wiring switching device for low-voltage current transformer verification - Google Patents
Equal ampere-turn wiring switching device for low-voltage current transformer verification Download PDFInfo
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- CN212586537U CN212586537U CN202020466324.5U CN202020466324U CN212586537U CN 212586537 U CN212586537 U CN 212586537U CN 202020466324 U CN202020466324 U CN 202020466324U CN 212586537 U CN212586537 U CN 212586537U
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- copper bar
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- moving contact
- current transformer
- current
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- 238000012795 verification Methods 0.000 title claims description 5
- 230000003068 static effect Effects 0.000 claims abstract description 30
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 65
- 229910052802 copper Inorganic materials 0.000 claims description 65
- 239000010949 copper Substances 0.000 claims description 65
- 230000000630 rising effect Effects 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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Abstract
The utility model belongs to the field of calibrating devices, and relates to a calibrating device of a current transformer, in particular to an equal ampere-turn wiring switching device for calibrating a low-voltage current transformer, which adjusts the positions of a first moving contact and a second moving contact through the outlet and return actions of two cylinders, thereby realizing the conduction with different static contacts, and when the current transformer with large current is calibrated, the second moving contact is conducted with a third static contact, so that the current output by a current booster passes through the current transformer to be tested twice to adapt to the calibration work of the large current transformer; when the small current transformer is calibrated, the first moving contact is conducted with the first fixed contact, and the second moving contact is conducted with the second fixed contact, so that the current output by the current booster passes through the current transformer to be tested once, the cost is saved, and the accuracy is improved.
Description
Technical Field
The utility model belongs to the calibrating installation field relates to current transformer's calibrating installation, especially a equal ampere-turn wiring auto-change over device for low-voltage current transformer examination.
Background
When a large current transformer is detected on an existing automatic detection assembly line of a low-voltage current transformer, and a transformer above 1000A is detected, the rising current of a primary loop is difficult to some extent. But for calibrating the transformers below 1000A, the primary loop current rise capacity has a larger margin. Therefore, an ampere-turn wire switching device should be designed to solve the above-mentioned contradiction.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome prior art not enough, provide a rational in infrastructure, switch on with different static contacts through the moving contact, realize the switching of circuit, when examining and determine heavy current transformer for the primary current of system is twice through the mutual-inductor, when examining and determining little current transformer, makes the primary current of system once through the mutual-inductor.
The utility model adopts the technical proposal that:
the utility model provides an equal ampere-turn wiring auto-change over device for low-voltage current transformer examination which characterized in that: the copper bar structure comprises two copper bars (5) which are arranged in parallel at intervals, wherein an insulating layer is arranged between the two copper bars, an upper copper bar is arranged above the upper copper bar, a lower copper bar is arranged below the upper copper bar, two ends of the upper copper bar and the lower copper bar are respectively and integrally provided with a conductive block, a first conductive block (4) is arranged at one side of the upper copper bar, and a second conductive block (6) is arranged at the other side of the upper copper bar and the; the first conducting block (4) of the upper copper bar is connected with one wiring end of the current booster (11), a first static contact (2) is connected in series between the first conducting block (4) and the current booster (11), the second conducting block (6) of the lower copper bar is connected with the other wiring end of the current booster (11), a second static contact (8) is connected in series between the second conducting block (6) and the current booster (11), a third static contact (7) is installed above the second static contact (8), and the third static contact (7) is communicated with the first conducting block (4) of the lower copper bar through a lead (3); a first moving contact (1) is arranged above the first fixed contact (2), the first moving contact (1) is connected in series between the third fixed contact (7) and a first conductive block (4) of the lower copper bar, and the first moving contact (1) is conducted with the first fixed contact (2) in a low-position state; a second moving contact (9) is arranged between the second fixed contact (8) and the third fixed contact (7), the second moving contact (9) is connected with a second conductive block (6) of the upper copper bar, the second moving contact (9) is conducted with the third fixed contact (7) in a high-position state and is conducted with the second fixed contact (8) in a low-position state (8).
And the output end of the current booster (11) is conducted with the first conductive block (4) of the upper copper bar, and the first fixed contact (2) is connected in series between the output end of the current booster (11) and the first conductive block (4) of the upper copper bar.
And the outer parts of the two copper bars (5) are used for sleeving a current transformer to be calibrated.
Moreover, the first moving contact (1) and the second moving contact (9) are respectively arranged at the end part of a piston rod of one cylinder (10), the two piston rods are synchronously lifted, the first moving contact (1) is separated from the first static contact (2) when the two piston rods are in an out-stroke state, and the second moving contact (9) is conducted with the third static contact (7); in the return state of the two piston rods, the first moving contact (1) is communicated with the first fixed contact (2), and the second moving contact (9) is communicated with the second fixed contact (8).
The utility model has the advantages that:
in the utility model, the positions of the first moving contact and the second moving contact are adjusted through the outlet and return movements of the two cylinders, so as to realize the conduction with different static contacts, and when the current transformer with large current is calibrated, the second moving contact is conducted with the third static contact, so that the current output by the current booster passes through the current transformer to be tested twice, and the calibration work of the large current transformer is adapted; when the small current transformer is calibrated, the first moving contact is conducted with the first fixed contact, and the second moving contact is conducted with the second fixed contact, so that the current output by the current booster passes through the current transformer to be tested once, the cost is saved, and the accuracy is improved.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural diagram of an embodiment;
FIG. 3 is a schematic diagram of another embodiment.
Detailed Description
The present invention is further illustrated by the following examples, which are intended to be illustrative, not limiting and are not intended to limit the scope of the invention.
The utility model provides an equal ampere-turn wiring auto-change over device for low-voltage current transformer examination which characterized in that: the copper bar structure comprises two copper bars (5) which are arranged in parallel at intervals, wherein an insulating layer is arranged between the two copper bars, an upper copper bar is arranged above the upper copper bar, a lower copper bar is arranged below the upper copper bar, two ends of the upper copper bar and the lower copper bar are respectively and integrally provided with a conductive block, a first conductive block (4) is arranged at one side of the upper copper bar, and a second conductive block (6) is arranged at the other side of the upper copper bar and the; the first conducting block (4) of the upper copper bar is connected with one wiring end of the current booster (11), a first static contact (2) is connected in series between the first conducting block (4) and the current booster (11), the second conducting block (6) of the lower copper bar is connected with the other wiring end of the current booster (11), a second static contact (8) is connected in series between the second conducting block (6) and the current booster (11), a third static contact (7) is installed above the second static contact (8), and the third static contact (7) is communicated with the first conducting block (4) of the lower copper bar through a lead (3); a first moving contact (1) is arranged above the first fixed contact (2), the first moving contact (1) is connected in series between the third fixed contact (7) and a first conductive block (4) of the lower copper bar, and the first moving contact (1) is conducted with the first fixed contact (2) in a low-position state; a second moving contact (9) is arranged between the second fixed contact (8) and the third fixed contact (7), the second moving contact (9) is connected with a second conductive block (6) of the upper copper bar, the second moving contact (9) is conducted with the third fixed contact (7) in a high-position state and is conducted with the second fixed contact (8) in a low-position state (8).
In this embodiment, the 2000A primary through copper bar is made into two turns, i.e., an upper copper bar and a lower copper bar.
In this embodiment, the output end of the current booster (11) is connected to the first conductive block (4) of the upper copper bar, and the first fixed contact (2) is connected in series between the output end of the current booster (11) and the first conductive block (4) of the upper copper bar.
In the embodiment, the current transformer to be calibrated is sleeved outside the two copper bars (5).
In this embodiment, the first moving contact (1) and the second moving contact (9) are respectively installed at the end of a piston rod of an air cylinder (10), the two piston rods are lifted synchronously, the first moving contact (1) is separated from the first fixed contact (2) when the two piston rods are in an out-stroke state, and the second moving contact (9) is conducted with the third fixed contact (7); in the return state of the two piston rods, the first moving contact (1) is communicated with the first fixed contact (2), and the second moving contact (9) is communicated with the second fixed contact (8).
The utility model discloses a working process is:
the utility model discloses during the use, when reaching the low-voltage current transformer to detecting 1000A, the current transformer suit that will await measuring is in the outside of two copper bars, later as shown in fig. 2, the journey motion is all made to two cylinders, make first moving contact and second moving contact all be in the high position, first moving contact and first static contact disconnection this moment, second moving contact and third static contact switch on, the electric current that rises a ware output is through first static contact, go up the copper bar, the second moving contact, the third static contact, the wire, the copper bar is to rising a ware down. Equal ampere-turn wiring is realized, namely, the current of the current booster passes through the tested mutual inductor twice.
For detecting a low-voltage current transformer below 1000A, as shown in fig. 3, the two cylinders both perform return motion, so that the first moving contact and the second moving contact are both located at low positions, the first moving contact is conducted with the first fixed contact, the second moving contact is conducted with the second fixed contact, and the current output by the current booster passes through the first fixed contact and then respectively flows through the upper copper bar and the lower copper bar to the current booster. And common wiring is realized, namely, the current of the current booster passes through the tested mutual inductor once.
In the utility model, the positions of the first moving contact and the second moving contact are adjusted through the outlet and return movements of the two cylinders, so as to realize the conduction with different static contacts, and when the current transformer with large current is calibrated, the second moving contact is conducted with the third static contact, so that the current output by the current booster passes through the current transformer to be tested twice, and the calibration work of the large current transformer is adapted; when the small current transformer is calibrated, the first moving contact is conducted with the first fixed contact, and the second moving contact is conducted with the second fixed contact, so that the current output by the current booster passes through the current transformer to be tested once, the cost is saved, and the accuracy is improved.
Claims (4)
1. The utility model provides an equal ampere-turn wiring auto-change over device for low-voltage current transformer examination which characterized in that: the copper bar structure comprises two copper bars (5) which are arranged in parallel at intervals, wherein an insulating layer is arranged between the two copper bars, an upper copper bar is arranged above the upper copper bar, a lower copper bar is arranged below the upper copper bar, two ends of the upper copper bar and the lower copper bar are respectively and integrally provided with a conductive block, a first conductive block (4) is arranged at one side of the upper copper bar, and a second conductive block (6) is arranged at the other side of the upper copper bar and the; the first conducting block (4) of the upper copper bar is connected with one wiring end of the current booster (11), a first static contact (2) is connected in series between the first conducting block (4) and the current booster (11), the second conducting block (6) of the lower copper bar is connected with the other wiring end of the current booster (11), a second static contact (8) is connected in series between the second conducting block (6) and the current booster (11), a third static contact (7) is installed above the second static contact (8), and the third static contact is communicated with the first conducting block (4) of the lower copper bar through a conducting wire (3); a first moving contact (1) is arranged above the first fixed contact (2), the first moving contact (1) is connected in series between the third fixed contact (7) and a first conductive block (4) of the lower copper bar, and the first moving contact (1) is conducted with the first fixed contact (2) in a low-position state; a second moving contact (9) is arranged between the second fixed contact (8) and the third fixed contact (7), the second moving contact (9) is connected with a second conductive block (6) of the upper copper bar, and the second moving contact (9) is conducted with the third fixed contact (7) in a high-position state and is conducted with the second fixed contact (8) in a low-position state.
2. The equal ampere-turn wiring switching device for the verification of the low-voltage current transformer as claimed in claim 1, wherein: the output end of the current rising device (11) is communicated with the first conductive block (4) of the upper copper bar, and the first fixed contact (2) is connected in series between the output end of the current rising device (11) and the first conductive block (4) of the upper copper bar.
3. The equal ampere-turn wiring switching device for the verification of the low-voltage current transformer as claimed in claim 1, wherein: the exterior of the two copper bars (5) is used for sleeving a current transformer to be calibrated.
4. An equal ampere-turn wire switching device for low-voltage current transformer verification according to claim 1, 2 or 3, wherein: the first moving contact (1) and the second moving contact (9) are respectively arranged at the end part of a piston rod of an air cylinder (10), the two piston rods are synchronously lifted, the first moving contact (1) is separated from the first static contact (2) when the two piston rods are in an out-of-range state, and the second moving contact (9) is conducted with the third static contact (7); in the return state of the two piston rods, the first moving contact (1) is communicated with the first fixed contact (2), and the second moving contact (9) is communicated with the second fixed contact (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020466324.5U CN212586537U (en) | 2020-04-02 | 2020-04-02 | Equal ampere-turn wiring switching device for low-voltage current transformer verification |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020466324.5U CN212586537U (en) | 2020-04-02 | 2020-04-02 | Equal ampere-turn wiring switching device for low-voltage current transformer verification |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212586537U true CN212586537U (en) | 2021-02-23 |
Family
ID=74656214
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020466324.5U Active CN212586537U (en) | 2020-04-02 | 2020-04-02 | Equal ampere-turn wiring switching device for low-voltage current transformer verification |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212586537U (en) |
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2020
- 2020-04-02 CN CN202020466324.5U patent/CN212586537U/en active Active
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