CN202275157U - Device special for high-current transformer error test - Google Patents
Device special for high-current transformer error test Download PDFInfo
- Publication number
- CN202275157U CN202275157U CN201120408397XU CN201120408397U CN202275157U CN 202275157 U CN202275157 U CN 202275157U CN 201120408397X U CN201120408397X U CN 201120408397XU CN 201120408397 U CN201120408397 U CN 201120408397U CN 202275157 U CN202275157 U CN 202275157U
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- shaped
- current transformer
- shaped joint
- test
- error test
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Abstract
The utility model relates to a device special for a high-current transformer error test and belongs to the technical field of transformer tests. The technical scheme is as follows: one edges of two L-shaped binding plates (1,3) are mutually close, and the other edges of the two L-shaped binding plates are separated with each other, so that the whole is of a U-shaped structure; the two ends of the U-shaped structure are respectively connected with the two ends of an arc binding plate (4); the two L-shaped binding plates and the arc binding plate are connected in series to jointly constitute a two-turn structure; the edges, which are closely arranged, of the two L-shaped binding plates jointly pass through the center of the current transformer to be tested; and the distance from the two ends of the two L-shaped binding plates to the current transformer to be tested and the distance from the arc binding plate to the current transformer to be tested are at least three meters; and the end parts of the edges, which are closely arranged, of the two L-shaped binding plates are respectively connected with the two ends of a current-raising transformer used for a test so as to complete the error test of the current transformer. In the device provided by the utility model, experiment equipment with low output current can be used so as to complete the error test of the high-current transformer, thereby reducing cost to complete the test and avoiding the influence of a returning conductor. By using the device, the test result is correct and reliable.
Description
Technical field
The utility model relates to a kind of great current mutual inductor error test isolated plant, belongs to mutual inductor experimental technique field.
Background technology
The current transformer error test is generally carried out in the semi-manufacture testing station, and the general maximum output primary current of the testing equipment of semi-manufacture testing station only can carry out error test to rated primary current 1250A and following current transformer in 1500A.When if rated primary current surpasses 1250A, adopt the method that improves a number of turn usually.Promptly according to the principle I of ampere-turn equilibrium
1N
1=I
2N
2, increase by one time the number of turn, reduce primary current.For example: the test product rated primary current is 5000A, can only apply the 1250A electric current and carry out error test around 4 circles on current transformer.Because p-wire directly on current transformer, can't avoid returning the influence of conductor, test result exists than large deviation, can't judge correctly whether current transformer error is qualified.If improve the testing equipment ability, need purchase change of high capacity pressure regulator and high capacity up-flow and supporting power supply, big current lead etc., need to drop into hundreds thousand of units; Cost is too high; How to use the experimental facilities of less output current, accomplish, reduce cost than the great current mutual inductor error test; Accomplishing experiment, is the technical matters that this area needs to be resolved hurrily.
The utility model content
The purpose of the utility model provides a kind of great current mutual inductor error test isolated plant, uses the experimental facilities of less output current, accomplishes than the great current mutual inductor error test, reduces cost, and accomplishes experiment, solves the problems referred to above that background technology exists.
The technical scheme of the utility model is: a kind of great current mutual inductor error test isolated plant; Comprise two L shaped joint covers, an arc joint cover, one side two L shaped joint covers each other near, be arranged in parallel; Do not contact, leave the slit each other; The another side of two L shaped joint covers is separated from each other, the layout that also is parallel to each other, overall U-shaped structure; The two ends of U-shaped structure are connected with the two ends of an arc joint cover respectively, and it is the structure of two circles that two L shaped joint covers and an arc joint cover constitute series connection together.
Also be provided with fixed head, be fixed on two L shaped joint covers each other near the limit on, guarantee that two limits of two L shaped joint covers do not contact, leave slit, keeping parallelism each other; The quantity of fixed head is two, separation on the limit of L shaped joint cover.
Two L shaped joint covers are the joint cover that copper busbar is processed, and fixed head is provided with the parallel tabular hole of twice, and two L shaped joint covers that copper busbar is processed pass from the parallel tabular hole of twice respectively.
Method of application comprises following steps: one side 1. two L shaped joint covers each other near, be arranged in parallel; Do not contact, leave the slit each other; The another side of two L shaped joint covers is separated from each other, the layout that also is parallel to each other, overall U-shaped structure; The two ends of U-shaped structure are connected with the two ends of an arc joint cover respectively, and it is the structure of two circles that two L shaped joint covers and an arc joint cover constitute series connection together; 2. two L shaped joint covers pass from the center of tested current transformer near the limit of arranging together, and L shaped joint cover two ends and the tested current transformer of arc joint cover distance have three meters distances at least; 3. two L shaped joint covers are near the limit of arranging, its end connects the two ends that test becomes with up-flow respectively, accomplish the current transformer error test.
The good effect of the utility model: the utility model can use the experimental facilities of less output current, accomplishes than the great current mutual inductor error test, reduces cost, and accomplishes experiment, can avoid returning the influence of conductor, and test result accurately and reliably.
Description of drawings
Fig. 1 is the embodiment synoptic diagram of the utility model;
Fig. 2 is facing of the utility model fixed head and schematic side view;
Among the figure: L shaped joint cover 1,3, fixed head 2, arc joint cover 4, tested current transformer 5, two end P1 of L shaped joint cover 1, C2, two end P2 of L shaped joint cover 3, C1, two end E1 of arc joint cover 4, E2.
Embodiment
Below in conjunction with accompanying drawing, the utility model is further specified through embodiment.
A kind of great current mutual inductor error test isolated plant comprises two L shaped joint covers, an arc joint cover 4, one side two L shaped joint covers 1,3 each other near; Be arranged in parallel, do not contact, leave the slit each other, the another side of two L shaped joint covers is separated from each other; Layout also is parallel to each other; Overall U-shaped structure, the two ends of U-shaped structure are connected with the two ends of an arc joint cover respectively, and it is the structure of two circles that two L shaped joint covers and an arc joint cover constitute series connection together.
Also be provided with fixed head 2, be fixed on two L shaped joint covers each other near the limit on, guarantee that two limits of two L shaped joint covers do not contact, leave slit, keeping parallelism each other; The quantity of fixed head is two, separation on the limit of L shaped joint cover.
Two L shaped joint covers are the joint cover that copper busbar is processed, and fixed head is provided with the parallel tabular hole of twice, and two L shaped joint covers that copper busbar is processed pass from the parallel tabular hole of twice respectively.
Method of application comprises following steps: 1. one side of two L shaped joint covers near, be arranged in parallel; Do not contact, leave the slit each other; The another side of two L shaped joint covers is separated from each other, the layout that also is parallel to each other, overall U-shaped structure; The two ends of U-shaped structure are connected with the two ends of an arc joint cover respectively, and it is the structure of two circles that two L shaped joint covers and an arc joint cover constitute series connection together; 2. two L shaped joint covers pass from the center of tested current transformer near the limit of arranging together, and L shaped joint cover two ends and the tested current transformer of arc joint cover distance have three meters distances at least; 3. two L shaped joint covers are near the limit of arranging, its end connects the two ends that test becomes with up-flow respectively, accomplish the current transformer error test.
During test, the P1 of L shaped joint cover 1 end connects test and becomes with up-flow, and the C2 end connects the E1 end of arc joint cover 4, and the E2 end of arc joint cover 4 connects the C1 end of L shaped joint cover 3, and the P2 end of L shaped joint cover 2 takes back test again and becomes with up-flow.
Also be provided with fixed head 2; Be fixed on two L shaped joint covers each other near the limit on; Two limits that guarantee two L shaped joint covers do not contact, leave slit, keeping parallelism each other; The quantity of fixed head is two, and separation on the limit of L shaped joint cover is tested current transformer in the middle of two fixed heads.
Claims (3)
1. great current mutual inductor error test isolated plant; It is characterized in that comprising two L shaped joint covers, an arc joint cover (4), two L shaped joint covers (1,3) one side each other near, be arranged in parallel; Do not contact, leave the slit each other; The another side of two L shaped joint covers is separated from each other, the layout that also is parallel to each other, overall U-shaped structure; The two ends of U-shaped structure are connected with the two ends of an arc joint cover respectively, and it is the structure of two circles that two L shaped joint covers and an arc joint cover constitute series connection together.
2. a kind of great current mutual inductor error test isolated plant according to claim 1; It is characterized in that also being provided with fixed head (2); Be fixed on two L shaped joint covers each other near the limit on, the quantity of fixed head is two, separation on the limit of L shaped joint cover.
3. a kind of great current mutual inductor error test isolated plant according to claim 2; It is characterized in that two L shaped joint covers are the joint cover that copper busbar is processed; Fixed head is provided with the parallel tabular hole of twice, and two L shaped joint covers that copper busbar is processed pass from the parallel tabular hole of twice respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120408397XU CN202275157U (en) | 2011-10-25 | 2011-10-25 | Device special for high-current transformer error test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120408397XU CN202275157U (en) | 2011-10-25 | 2011-10-25 | Device special for high-current transformer error test |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202275157U true CN202275157U (en) | 2012-06-13 |
Family
ID=46195505
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120408397XU Expired - Lifetime CN202275157U (en) | 2011-10-25 | 2011-10-25 | Device special for high-current transformer error test |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202275157U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102385045A (en) * | 2011-10-25 | 2012-03-21 | 保定天威集团有限公司 | Error test method for heavy current transformer and special device used in same |
-
2011
- 2011-10-25 CN CN201120408397XU patent/CN202275157U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102385045A (en) * | 2011-10-25 | 2012-03-21 | 保定天威集团有限公司 | Error test method for heavy current transformer and special device used in same |
| CN102385045B (en) * | 2011-10-25 | 2013-06-12 | 保定天威集团有限公司 | Error test method for heavy current transformer and special device used in same |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20120613 Effective date of abandoning: 20130612 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20120613 Effective date of abandoning: 20130612 |
|
| RGAV | Abandon patent right to avoid regrant |