CN220603514U - Short-circuit grounding device for secondary side current terminal of current transformer - Google Patents
Short-circuit grounding device for secondary side current terminal of current transformer Download PDFInfo
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- CN220603514U CN220603514U CN202321781812.5U CN202321781812U CN220603514U CN 220603514 U CN220603514 U CN 220603514U CN 202321781812 U CN202321781812 U CN 202321781812U CN 220603514 U CN220603514 U CN 220603514U
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- guide groove
- metal guide
- secondary side
- current transformer
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- 239000002184 metal Substances 0.000 claims abstract description 43
- 229910052751 metal Inorganic materials 0.000 claims abstract description 43
- 238000009413 insulation Methods 0.000 claims description 2
- 238000012360 testing method Methods 0.000 description 9
- 238000012986 modification Methods 0.000 description 6
- 230000004048 modification Effects 0.000 description 6
- 238000004804 winding Methods 0.000 description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 210000002445 nipple Anatomy 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
Abstract
The utility model discloses a short-circuit grounding device for a secondary side current terminal of a current transformer, which comprises a grounding clip, an indicator lamp, a grounding wire, an insulating plate and a movable short joint, wherein the grounding clip is arranged on the grounding clip; the insulating plate is provided with a metal guide groove, one end of the metal guide groove is provided with a connecting terminal which is in direct contact with the metal guide groove, the movable short joint is used for connecting a secondary side current terminal of the current transformer to be short-circuited, the movable short joint is clamped in the metal guide groove, and the movable short joint can move along the length direction of the metal guide groove; the grounding clip, the indicator lamp and the connecting terminal are sequentially connected through the grounding wire, and the grounding clip is used for being connected with the grounding body. The short-circuit grounding device for the secondary side current terminal of the current transformer has the advantages that the structure is simple, an operator can hold the insulating plate by hand during operation, the safety is good, the movable short connector can slide along the metal guide groove, a plurality of movable short connectors can be simultaneously arranged in one metal guide groove, the applicability is good, misoperation can be avoided due to the existence of the indicator lamp, and the application prospect is good.
Description
Technical Field
The utility model relates to the technical field of debugging of electrical equipment in the metallurgical industry, in particular to a short-circuit grounding device for a secondary side current terminal of a current transformer.
Background
The electrical equipment test is an important measure for judging whether equipment can be continuously put into operation, preventing equipment damage and ensuring safe operation. In a primary winding withstand voltage test of a single test of a current transformer of an electrical device, a secondary winding loop of the current transformer needs to be in short circuit connection with a current terminal, and the current terminal is connected with a copper bare wire in sequence and then is grounded in the past, but the following defects exist in the operation mode: 1) Poor contact is easy to occur, short circuit grounding is unreliable, and the secondary side of the primary side winding of the current transformer can generate high voltage when being voltage-resistant, so that people and equipment are injured; 2) The bare copper wire is easy to leave in the cabinet after the withstand voltage test of the current transformer, and the secondary side current of the transformer is inaccurate after the equipment operates, so that the ammeter is inaccurate in measurement and the relay protection device is mistakenly jumped and bounced.
Therefore, the development of the short-circuit grounding device for the secondary side current terminal of the current transformer, which is convenient to operate, reliable in short-circuit grounding and free of carryover, has very practical significance.
Disclosure of Invention
Because the prior art has the defects, the utility model provides the short-circuit grounding device for the secondary side current terminal of the current transformer, which is convenient to operate, reliable in short-circuit grounding and free of carry-over, has the advantages of convenient operation, good safety and high integration level, is particularly suitable for the withstand voltage test of the primary side winding of the current transformer in the single test process of the current transformer of the electrical equipment, and overcomes the defects that the short-circuit means of the secondary side current terminal of the current transformer is poor in reliability, inconvenient to operate and the carry-over copper wire affects the operation of the equipment.
In order to achieve the above object, the present utility model provides the following technical solutions:
a short-circuit grounding device of a secondary side current terminal of a current transformer comprises a grounding clip, an indicator lamp, a grounding wire, an insulating plate and a movable short joint;
the insulation board is provided with a metal guide groove, one end of the metal guide groove is provided with a connecting terminal which is in direct contact with the metal guide groove, the movable short joint is used for connecting a secondary side current terminal of the current transformer to be short-circuited, the movable short joint is clamped in the metal guide groove, and the movable short joint can move along the length direction of the metal guide groove;
the grounding clamp, the indicator lamp and the connecting terminal are sequentially connected through the grounding wire, and the grounding clamp is used for being connected with the grounding body.
The short-circuit grounding device for the secondary side current terminal of the current transformer has the advantages that the structure is simple, an operator can hold the insulating plate by hand during operation, the safety is good, the movable short connector can slide along the metal guide groove, a plurality of movable short connectors can be simultaneously arranged in one metal guide groove, the applicability is good, the existence of the indicator lamp can provide a certain warning effect (when the secondary side current terminal device of the electrified current transformer is mistakenly inserted, the indicator lamp can be lightened to prompt, and misoperation is prevented), and the application prospect is good.
As a preferable technical scheme:
the short-circuit grounding device of the secondary side current terminal of the current transformer comprises a short-circuit connector clamping part and a short-circuit connector connecting part;
the short-circuit joint part is matched with the metal guide groove, and the short-circuit terminal connecting part is used for connecting a secondary side current terminal of the current transformer to be short-circuited.
According to the short-circuit grounding device for the secondary side current terminal of the current transformer, the cross section of the metal guide groove is T-shaped.
The secondary side current terminal short-circuit grounding device of the current transformer comprises a plurality of insulating plates;
the insulating plates are mutually spliced, and metal guide grooves in the insulating plates are mutually contacted after the splicing, so that the requirement of simultaneously shorting the secondary side current terminals of the current transformers can be met.
According to the short-circuit grounding device for the secondary side current terminal of the current transformer, the insulating plate is a plastic square plate.
According to the short-circuit grounding device for the secondary side current terminal of the current transformer, the plurality of movable short joints are clamped in the metal guide groove.
The above technical solution is only one possible technical solution of the present utility model, the protection scope of the present utility model is not limited thereto, and a person skilled in the art can reasonably adjust the specific design according to the actual requirements.
Said utility model has the following advantages or beneficial effects:
(1) According to the short-circuit grounding device for the secondary side current terminal of the current transformer, an operator can hold the insulating plate by hand during operation, the safety is good, meanwhile, the existence of the indicator lamp can provide a certain warning effect, and misoperation-wrong access to secondary side current terminal equipment of the electrified current transformer can be avoided;
(2) The short-circuit grounding device for the secondary side current terminals of the current transformer has the advantages that the structure is simple, the movable short joints can slide along the metal guide groove, a plurality of movable short joints can be simultaneously arranged in one metal guide groove, and the insulating plates can be mutually spliced to meet the requirement of simultaneously shorting the secondary side current terminals of the current transformer, so that the applicability is good;
(3) According to the short-circuit grounding device for the secondary side current terminal of the current transformer, numbers can be arranged on the insulating plate and the movable short-circuit joint, after the use, the current transformer can be recovered according to the numbers, the carry-over is prevented, the negative influence of the carry-over on equipment is avoided, and the application prospect is good.
Drawings
The utility model and its features, aspects and advantages will become more apparent from the detailed description of non-limiting embodiments with reference to the following drawings. Like numbers refer to like parts throughout the several views, emphasis instead being placed upon illustrating the principles of the utility model.
Fig. 1 is an overall schematic diagram of a current transformer secondary side current terminal short circuit grounding device of the present utility model;
FIG. 2 is a schematic view of an insulating plate and a movable nipple according to the present utility model;
FIG. 3 is a schematic diagram illustrating the operation of the current transformer secondary side current terminal shorting grounding device of the present utility model;
1, a grounding clip; 2. an indicator light; 3. a connection terminal; 4. a ground wire; 5. a metal guide groove; 6. an insulating plate; 7. a movable short joint; 71. a short joint clamping part; 72. shorting the header connection.
Detailed Description
The structure of the present utility model will be further described with reference to the accompanying drawings and specific examples, which are not intended to limit the utility model.
Example 1
The short-circuit grounding device for the secondary side current terminal of the current transformer comprises a grounding clip 1, an indicator lamp 2, a grounding wire 4, an insulating plate 6 (a plastic square plate) and a movable short joint 7 as shown in figures 1-3;
the insulating plate 6 is provided with a metal guide groove 5 (the cross section of the metal guide groove is T-shaped), one end of the metal guide groove 5 is provided with a connecting terminal 3, and the connecting terminal 3 is in direct contact with the metal guide groove 5; the insulating plates 6 can be only one or a plurality of insulating plates 6, the insulating plates 6 are spliced with each other, and metal guide grooves 5 in the insulating plates 6 are contacted with each other after splicing;
the movable short connector 7 comprises a short connector clamping part 71 and a short connector terminal connecting part 72, the short connector clamping part 71 is matched with the metal guide groove 5, the short connector terminal connecting part 72 is used for connecting a secondary side current terminal of the current transformer to be short-circuited, the movable short connector 7 is clamped in the metal guide groove 5 (1 movable short connector 7 can be clamped in the metal guide groove 5 at the same time and a plurality of movable short connectors 7 can be clamped in the metal guide groove 5) and the movable short connector 7 can move along the length direction of the metal guide groove 5;
as shown in fig. 3, the ground clip 1, the indicator lamp 2, and the connection terminal 3 are connected in this order through the ground wire 4, and the ground clip 1 is used for connection to the ground body.
Specifically, the insulating plate has dimensions of 100mm by 50mm by 30mm.
The using method of the secondary side current terminal short-circuit device of the current transformer comprises the following steps:
step 1: according to the number of current terminals on the secondary side of the current transformer to be short-circuited, a corresponding number of movable short joints are inserted into the metal guide groove, wherein one movable short joint corresponds to an insulating plate, and a plurality of movable short joints correspond to the insulating plate;
step 2: the grounding clamp is reliably grounded;
step 3: inserting the movable short-circuit joint into a secondary side current terminal of the current transformer to be short-circuited, and reliably short-circuiting and grounding the secondary side winding of the current transformer at the current terminal;
step 4: setting up the instrument required by the withstand voltage test of the current transformer, and starting the withstand voltage test by an operator in place;
step 5: after the withstand voltage test is finished, collecting the instrument;
step 6: pulling out the movable short joint from the secondary side current terminal of the current transformer, and recovering the original state of the terminal;
step 7: the grounding clip is removed from the grounding body, the movable short joint is removed, and the device is well received.
Through verification, according to the short-circuit grounding device for the secondary side current terminal of the current transformer, an operator can hold the insulating plate by hand during operation, the safety is good, meanwhile, the existence of the indicator lamp can provide a certain warning effect, and misoperation-wrong access to secondary side current terminal equipment of the electrified current transformer can be avoided; the movable short connector can slide along the metal guide groove, a plurality of movable short connectors can be simultaneously arranged in one metal guide groove, and the insulating plates can be mutually spliced to meet the requirement of simultaneously shorting the secondary side current terminals of a plurality of current transformers, so that the applicability is good; the number can be set on the insulating plate and the movable short joint, and the number can be recovered after the use, so that the carry-over is prevented, the negative influence on equipment caused by the carry-over is avoided, and the application prospect is good.
Those skilled in the art will understand that the skilled person can implement the modification in combination with the prior art and the above embodiments, and this will not be repeated here. Such modifications do not affect the essence of the present utility model, and are not described herein.
The preferred embodiments of the present utility model have been described above. It is to be understood that the utility model is not limited to the specific embodiments described above, wherein devices and structures not described in detail are to be understood as being implemented in a manner common in the art; any person skilled in the art can make many possible variations and modifications to the technical solution of the present utility model or modifications to equivalent embodiments without departing from the scope of the technical solution of the present utility model, using the methods and technical contents disclosed above, without affecting the essential content of the present utility model. Therefore, any simple modification, equivalent variation and modification of the above embodiments according to the technical substance of the present utility model still fall within the scope of the technical solution of the present utility model.
Claims (6)
1. A current transformer secondary side current terminal short circuit earthing device, its characterized in that: the device comprises a grounding clip, an indicator light, a grounding wire, an insulating plate and a movable short joint;
the insulation board is provided with a metal guide groove, one end of the metal guide groove is provided with a connecting terminal which is in direct contact with the metal guide groove, the movable short joint is used for connecting a secondary side current terminal of the current transformer to be short-circuited, the movable short joint is clamped in the metal guide groove, and the movable short joint can move along the length direction of the metal guide groove;
the grounding clamp, the indicator lamp and the connecting terminal are sequentially connected through the grounding wire, and the grounding clamp is used for being connected with the grounding body.
2. The current transformer secondary side current terminal short circuit grounding device according to claim 1, wherein the movable short connector comprises a short connector clamping part and a short connector terminal connecting part;
the short-circuit joint part is matched with the metal guide groove, and the short-circuit terminal connecting part is used for connecting a secondary side current terminal of the current transformer to be short-circuited.
3. The current transformer secondary side current terminal short circuit grounding device according to claim 2, wherein the cross section of the metal guide groove is T-shaped.
4. The current transformer secondary side current terminal short circuit grounding device according to claim 1, wherein the insulating plates share a plurality of blocks;
the insulating plates are mutually spliced, and metal guide grooves in the insulating plates are mutually contacted after splicing.
5. The current transformer secondary side current terminal short circuit grounding device according to claim 1, wherein the insulating plate is a plastic square plate.
6. The current transformer secondary side current terminal short circuit grounding device according to claim 1, wherein a plurality of movable short joints are clamped in the metal guide groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321781812.5U CN220603514U (en) | 2023-07-07 | 2023-07-07 | Short-circuit grounding device for secondary side current terminal of current transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321781812.5U CN220603514U (en) | 2023-07-07 | 2023-07-07 | Short-circuit grounding device for secondary side current terminal of current transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220603514U true CN220603514U (en) | 2024-03-15 |
Family
ID=90168707
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321781812.5U Active CN220603514U (en) | 2023-07-07 | 2023-07-07 | Short-circuit grounding device for secondary side current terminal of current transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220603514U (en) |
-
2023
- 2023-07-07 CN CN202321781812.5U patent/CN220603514U/en active Active
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