CN202473587U - Feedthrough type current transformer - Google Patents
Feedthrough type current transformer Download PDFInfo
- Publication number
- CN202473587U CN202473587U CN2012201049558U CN201220104955U CN202473587U CN 202473587 U CN202473587 U CN 202473587U CN 2012201049558 U CN2012201049558 U CN 2012201049558U CN 201220104955 U CN201220104955 U CN 201220104955U CN 202473587 U CN202473587 U CN 202473587U
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- copper rod
- primary
- primary conductive
- current transformer
- conductive copper
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- Expired - Fee Related
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Abstract
The utility model provides a feedthrough type current transformer, which comprises an iron core, a secondary winding and a primary electric conductor, wherein the secondary winding is wound on the iron core and is poured with epoxy resin to form a structure of an external cylinder body with an cylindrical cavity; the cavity is provided with a high-voltage shielding screen; the primary electric conductor is a primary electroconductive copper rod which penetrates through the cavity; one end of a flexible wire is connected with the high-voltage shielding screen, and the other end of the flexible wire is connected with the primary electroconductive copper rod; and insulation guard plates are arranged around outer edges at two ends of the primary electroconductive copper rod. The feedthrough type current transformer has the advantages and beneficial effects that due to adoption of the technical scheme, the primary electroconductive copper rod and the high-voltage shielding screen are connected to play a role in homogenizing an electric field around the primary electric conductor, and with addition of the dual protection of the insulation guard plates, the problems of breakdown and the like caused by corona and heating are prevented.
Description
Technical field
The utility model belongs to the power measuring instrument field, especially relates to a kind of straight-through current transformer.
Background technology
The effect of current transformer is to convert the bigger primary current of numerical value into numerical value less secondary current through certain no-load voltage ratio, is used for protecting, purposes such as measurement.Like no-load voltage ratio is 400/5 current transformer, can be reality that the current transitions of 400A is the electric current of 5A
At present, the current transformer that in 10 to 35KV electric power systems, uses, primary current generally adopt straight-through current transformer greater than the application of 1.5KA.
But there is shortcoming again in this transducer, is exactly when industrial frequency withstand voltage and circuit operation, to produce the corona heating and the problem of puncture.
Summary of the invention
The problem that the utility model will solve provides a kind of straight-through current transformer, especially is fit to the application of primary current greater than 1.5KA.
For solving the problems of the technologies described above, the technical scheme that the utility model adopts is:
A kind of straight-through current transformer comprises iron core, secondary winding and primary conductive body, twines secondary winding on the said iron core, and waters the structure that builds up band cylindrical cavity in the profile cylinder through epoxy resin; At said inner chamber the high-tension shielding net is set; Said primary conductive body is the primary conductive copper rod, and said primary conductive copper rod passes said inner chamber; Connect the high-tension shielding net through flexible cord one end, an end connects the primary conductive copper rod; The two ends outer circumference of said primary conductive copper rod is arranged with the insulation backplate.
Further, said inner chamber is provided with an outer screw that is connected with the high-tension shielding net, and the end that flexible cord connects the high-tension shielding net is connected to outer screw place.
Further, an end of said primary conductive copper rod is provided with inner bolt hole, and the end that flexible cord connects the primary conductive copper rod is connected to the inner bolt hole place.
Advantage and the good effect that the utlity model has are: owing to adopt technique scheme; The primary conductive copper rod is connected with the high-tension shielding net; Play even Primary Conductor effect of electric field on every side,, prevent the corona heating and problems such as puncture at the duplicate protection that adds the insulation backplate.
Description of drawings
Fig. 1 is the front view of the utility model;
Fig. 2 is the end view of the utility model.
Among the figure:
1, primary conductive copper rod 2, insulation backplate 3, outer screw
4, inner bolt hole
Embodiment
Like Fig. 1, shown in 2, a kind of straight-through current transformer of the utility model comprises iron core, secondary winding and primary conductive body, twines secondary winding on the said iron core, and waters the structure that builds up band cylindrical cavity in the profile cylinder through epoxy resin; At said inner chamber the high-tension shielding net is set, also is provided with an outer screw 3 that is connected with the high-tension shielding net on it; Said primary conductive body is a primary conductive copper rod 1, and said primary conductive copper rod 1 passes said inner chamber, and the one of which end also is provided with inner bolt hole 4; Connect the inner bolt hole 4 that above-mentioned outer screw 3, one ends are connected to primary conductive copper rod 1 through flexible cord one end; The two ends outer circumference of said primary conductive copper rod 1 is arranged with insulation backplate 2.
The course of work of this instance: in ready profile is cylinder, in the die cavity of band cylindrical hole, put into the iron core that twines secondary winding, the high-tension shielding net is arranged on the die cavity post that forms cylindrical hole, be poured in the die cavity with epoxy resin; Screw 3 outside on the inner chamber of pour mass, being provided with; And be connected with the high-tension shielding net; During installation flexible cord one end is connected outer screw 3, the other end connects on the inner bolt hole 4 of primary conductive copper rod 1 one ends that insert the pour mass inner chamber, again primary conductive copper rod 1 two ends is provided with insulation backplate 2.
More than the embodiment of the utility model is specified, but said content is merely the preferred embodiment of the utility model, can not be considered to be used to limit the practical range of the utility model.All equalizations of doing according to the utility model application range change and improve etc., all should still belong within the patent covering scope of the utility model.
Claims (3)
1. a straight-through current transformer comprises iron core, secondary winding and primary conductive body, twines secondary winding on the said iron core, and waters the structure that builds up band cylindrical cavity in the profile cylinder through epoxy resin; It is characterized in that: the high-tension shielding net is set at said inner chamber; Said primary conductive body is the primary conductive copper rod, and said primary conductive copper rod passes said inner chamber; Connect the high-tension shielding net through flexible cord one end, an end connects the primary conductive copper rod; The two ends outer circumference of said primary conductive copper rod is arranged with the insulation backplate.
2. straight-through current transformer according to claim 1 is characterized in that: said inner chamber is provided with an outer screw that is connected with the high-tension shielding net, and the end that flexible cord connects the high-tension shielding net is connected to outer screw place.
3. straight-through current transformer according to claim 1 is characterized in that: an end of said primary conductive copper rod is provided with inner bolt hole, and the end that flexible cord connects the primary conductive copper rod is connected to the inner bolt hole place.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201049558U CN202473587U (en) | 2012-03-20 | 2012-03-20 | Feedthrough type current transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201049558U CN202473587U (en) | 2012-03-20 | 2012-03-20 | Feedthrough type current transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202473587U true CN202473587U (en) | 2012-10-03 |
Family
ID=46921731
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201049558U Expired - Fee Related CN202473587U (en) | 2012-03-20 | 2012-03-20 | Feedthrough type current transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202473587U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105869831A (en) * | 2016-05-26 | 2016-08-17 | 国家电网公司 | 36000A strong current generator and detecting method thereof |
| CN110299673A (en) * | 2019-07-12 | 2019-10-01 | 江苏华鹏变压器有限公司 | High-tension switch cabinet |
-
2012
- 2012-03-20 CN CN2012201049558U patent/CN202473587U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105869831A (en) * | 2016-05-26 | 2016-08-17 | 国家电网公司 | 36000A strong current generator and detecting method thereof |
| CN110299673A (en) * | 2019-07-12 | 2019-10-01 | 江苏华鹏变压器有限公司 | High-tension switch cabinet |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121003 Termination date: 20150320 |
|
| EXPY | Termination of patent right or utility model |