CN215955022U - Secondary side short-circuit device of current transformer - Google Patents
Secondary side short-circuit device of current transformer Download PDFInfo
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- CN215955022U CN215955022U CN202121199623.8U CN202121199623U CN215955022U CN 215955022 U CN215955022 U CN 215955022U CN 202121199623 U CN202121199623 U CN 202121199623U CN 215955022 U CN215955022 U CN 215955022U
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- secondary side
- current transformer
- conductive connecting
- terminal
- short circuit
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Abstract
The utility model provides a secondary side short circuit device of a current transformer, which comprises a terminal row provided with a plurality of wiring terminals, wherein each wiring terminal comprises a threaded sleeve provided with a screw hole and a screw rod with a cap arranged in the threaded sleeve. The conductive connecting strips are placed on the wiring terminal strip, so that each protrusion is matched and connected with the top of the corresponding terminal threaded sleeve but not connected with the top of the corresponding terminal threaded sleeve, the conductive connecting strips are insulated from the threaded sleeves through the insulating layers, the threaded rods with caps penetrate through the through holes in the protrusions of the conductive connecting strips to be screwed into the corresponding threaded sleeves when in use, the nuts are tightly connected with the protrusions of the conductive connecting strips, short circuit crossing at a long distance or short circuit in various combination forms can be realized, the secondary side short circuit of the current transformer is completed, and the secondary side operation safety is guaranteed.
Description
Technical Field
The utility model relates to a short-circuit device, in particular to a short-circuit device for a secondary side of a current transformer, and belongs to the technical field of design and manufacture of electrical facilities.
Background
The secondary side of the current transformer is not allowed to be open-circuited, otherwise, high voltage is generated on the secondary side, and personal and equipment safety is endangered. Meanwhile, the secondary side open circuit can greatly increase the magnetic induction intensity, increase the loss of an iron core, seriously heat and even burn out the current transformer. It is therefore necessary to short the secondary side of the current transformer using the terminal strip. The existing terminal row can only carry out short circuit between adjacent terminals, and only can use a wire for interconnection if long-distance crossing short circuit or various short circuit combinations are needed. Not only the operation is inconvenient, but also the lead is loosened to cause the secondary side of the current transformer to be open-circuited, thereby damaging the current transformer and even causing safety accidents. There is therefore a need for improvements in the prior art.
Disclosure of Invention
The utility model provides a short-circuit device for a secondary side of a current transformer, which aims to solve the problems that a terminal block for short-circuit of the secondary side of the current transformer can only carry out short-circuit of adjacent terminals, so that the test is insufficient, the operation is inconvenient and the like.
The utility model is completed by the following technical scheme: a short circuit device for secondary side of current transformer is prepared as setting several conductive connection strips on several connection terminals, setting screw bolt to pass through hole in screw sleeve on each connection terminal and setting insulation layer on surface of lower part of each projection for placing conductive connection strip on connection terminal row to let each projection be matched with top of corresponding terminal screw sleeve but not be connected, using insulation layer to insulate conductive connection strip from screw sleeve, passing screw bolt with cap through hole on said projection to screw in corresponding screw sleeve for tightly connecting screw cap with said projection to realize short circuit of long distance crossing short circuit or multiple combination form to finish short circuit of secondary side of current transformer, the secondary side operation safety is guaranteed.
The conductive connecting strip is arranged into a strip metal plate, the length of the conductive connecting strip is matched with the length of the terminal row, a plurality of protrusions are arranged from one end of the conductive connecting strip to the other end at intervals, the protrusions are arranged into a rectangle or a circle or a triangle matched with the shape of the top of the terminal screw sleeve, the distance between every two protrusions is matched with the distance between every two terminals, so that the conductive connecting strip is placed on the terminal row, each protrusion is matched and connected with the corresponding terminal screw sleeve, and all the terminal screw sleeves on the terminal row are connected into a whole.
The through hole on the conductive connecting strip protrusion is designed into a vertical hole so that the through hole is matched and connected with the terminal threaded sleeve, and the screw with the cap can penetrate through the through hole and be screwed into the terminal threaded sleeve.
The thickness of the insulating layer is set to be 1-3mm, so that the conductive connecting strip and the terminal screw sleeve are prevented from being mutually conductive through the insulating layer.
The utility model has the following advantages and effects: by adopting the scheme, the conductive connecting strips are placed on the wiring terminal strip, each protrusion is matched and connected with the top of the corresponding terminal screw sleeve but not connected, the conductive connecting strips are insulated from the screw sleeves through the insulating layers, the screw rods with the caps penetrate through the through holes in the protrusions of the conductive connecting strips and are screwed into the corresponding screw sleeves when the conductive connecting strips are used, the screw caps are tightly connected with the protrusions of the conductive connecting strips, the short circuit of a long-distance crossing short circuit or multiple combination forms can be realized, the secondary side short circuit of the current transformer is completed, and the secondary side operation safety is guaranteed. The short-circuit device is an ideal short-circuit device.
Drawings
FIG. 1 is a block diagram of the present invention.
Detailed Description
The utility model provides a secondary side short circuit device of a current transformer, which comprises a terminal row 1 provided with a plurality of wiring terminals 2, each wiring terminal 2 comprises a threaded sleeve 4 provided with a screw hole, a screw rod 5 with a cap arranged in the threaded sleeve 4, a plurality of conductive connecting strips 3 provided with a plurality of bulges 6 are arranged on the wiring terminals 2, through holes 7 allowing the screw rod 5 to penetrate into the threaded sleeve 4 are arranged on the bulges 6, and the surface of the lower part of the bulge 6 is provided with an insulating layer 8, the conductive connecting strip 3 is a strip metal plate, the length of the terminal strip is matched with that of the terminal strip 1, a plurality of bulges 6 are arranged from one end of the conductive connecting strip 3 to the other end at intervals, and the protrusion 6 is set to be a rectangle which is matched with the shape of the top of the terminal threaded sleeve 4, the distance between every two protrusions 6 is matched with the distance between every two terminals 2, the through hole 7 on the protrusion 6 of the conductive connecting strip 3 is set to be a vertical hole, and the thickness of the insulating layer 8 is set to be 2 mm.
During the use, pass every screw rod 5 of taking the cap in the corresponding swivel nut 4 of through-hole 7 screw on the 3 protruding 6 of corresponding conductive connection strip as required, make screw rod 5 of taking the cap and the protruding 6 zonulae occludens of conductive connection strip 3, can realize long distance crossing over the short circuit, can go into corresponding screw rod 5 of taking the cap on the 3 protruding 6 of every conductive connection strip, perhaps go into corresponding screw rod 5 of taking the cap on the 3 protruding 6 of one or more conductive connection strips 3 at the interval, in order to carry out the short circuit of multiple combination form, it is short to accomplish current transformer secondary side, guarantee secondary side operation safety.
Claims (4)
1. The utility model provides a current transformer secondary side short circuit device, includes the terminal row of establishing a plurality of binding post on it, and each binding post is equipped with a plurality of bellied electrically conductive connecting strips on its screw including the swivel nut of establishing the screw on it, arranges the screw rod of taking the cap in the swivel nut in its characterized in that a plurality of binding post are equipped with on it, are equipped with in the arch to let the screw rod pass the through-hole that stretches into in the swivel nut, and the face of protruding lower part is equipped with insulating layer.
2. The secondary side short-circuit device of the current transformer as claimed in claim 1, wherein the conductive connecting strip is a long metal plate with a length corresponding to the length of the terminal row, a plurality of protrusions are arranged from one end of the conductive connecting strip to the other end at intervals, the protrusions are rectangular, circular or triangular corresponding to the shape of the top of the terminal screw sleeve, and the distance between every two protrusions is corresponding to the distance between every two terminals.
3. The secondary side shorting device of the current transformer as recited in claim 1 wherein the through hole on the conductive connecting bar protrusion is a vertical hole.
4. The current transformer secondary side shorting device as recited in claim 1 wherein the thickness of the insulating layer is set to 1-3 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121199623.8U CN215955022U (en) | 2021-06-01 | 2021-06-01 | Secondary side short-circuit device of current transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121199623.8U CN215955022U (en) | 2021-06-01 | 2021-06-01 | Secondary side short-circuit device of current transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215955022U true CN215955022U (en) | 2022-03-04 |
Family
ID=80565181
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121199623.8U Active CN215955022U (en) | 2021-06-01 | 2021-06-01 | Secondary side short-circuit device of current transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215955022U (en) |
-
2021
- 2021-06-01 CN CN202121199623.8U patent/CN215955022U/en active Active
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