CN202502243U - Error measurement device for current transformer - Google Patents
Error measurement device for current transformer Download PDFInfo
- Publication number
- CN202502243U CN202502243U CN2012201214593U CN201220121459U CN202502243U CN 202502243 U CN202502243 U CN 202502243U CN 2012201214593 U CN2012201214593 U CN 2012201214593U CN 201220121459 U CN201220121459 U CN 201220121459U CN 202502243 U CN202502243 U CN 202502243U
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- China
- Prior art keywords
- current transformer
- measured
- current
- standard
- error measurement
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
The utility model relates to an error measurement device for a current transformer. The device is connected with a current transformer to be measured and comprises a current booster, a standard current transformer and an error measurement device. The current booster is separately connected with the standard current transformer and the current transformer to be measured, the P end of the primary winding of the current transformer to be measured is connected with the L end of the standard current transformer, the non-polar end of the secondary current of the current transformer to be measured is connected with the measured end of the error measurement device through a current load box, the non-polar end of the secondary current of the standard current transformer is connected with the standard end of the error measurement device, and the polar ends of the current transformer to be measured and the standard current transformer are connected with the polar end of the error measurement device after being connected in parallel. Compared with the prior art, the error measurement device for the current transformer provided by the utility model has the advantages that the device is simple in structure, can be used in high voltage circuit testing, has high accuracy and the like.
Description
Technical field
The utility model relates to a kind of error measuring means, especially relates to a kind of current transformer error measurement mechanism.
Background technology
Continuous expansion along with the electric system transmission line capability; The application of novel current sensor in middle and high piezoelectricity net more and more widely; Current sensor is as the important component part of electric power meter; The accuracy of its translation data and rationality are directly connected to the calculating of total errors of electric energy countings, therefore must carry out accuracy test to current sensor.Like utility application 03271777.6 a kind of current sensor error check-out console is disclosed, mainly by pressure regulator T
1, current lifting device CT
2, standard current transformer CT
0, current-to-voltage converter TIV and mutual-inductor tester GS
2The circuit of forming connects, but this device is only applicable to the medium voltage network test.
Summary of the invention
The purpose of the utility model is exactly that a kind of simple in structure, current transformer error measurement mechanism that measuring accuracy is high is provided in order to overcome the defective that above-mentioned prior art exists.
The purpose of the utility model can realize through following technical scheme:
A kind of current transformer error measurement mechanism; This device connects current transformer to be measured; It is characterized in that; Described device comprises current lifting device, standard current transformer and error measuring means; Described current lifting device connects standard current transformer and current transformer to be measured respectively, and the P end of a winding of described current transformer to be measured connects the L end of standard current transformer, and the secondary current non-polar end of described current transformer to be measured connects the seized end of error measuring means through the current capacity case; The secondary current non-polar end of described standard current transformer connects the normal end of error measuring means, is connected the polar end of error measuring means after the polar end parallel connection of the polar end of described current transformer to be measured and standard current transformer.
Described current transformer to be measured is made up of a winding and a plurality of Secondary Winding, and said one of them Secondary Winding of a plurality of Secondary Winding is as winding to be measured, and all the other Secondary Winding two ends connect back ground connection through lead.
Described Secondary Winding is provided with 2 at least.
Compared with prior art, the utlity model has simple in structure, can be used for high-tension circuit test and the high advantage of degree of accuracy.
Description of drawings
Fig. 1 is the circuit theory diagrams of the utility model.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment the utility model is elaborated.
Embodiment
As shown in Figure 1, a kind of current transformer error measurement mechanism, this device connects current transformer T to be measured
1, comprise current lifting device 2, standard current transformer T
0With error measuring means 1, current lifting device 2 connects standard current transformer T respectively
0With current transformer T to be measured
1, current transformer T to be measured
1Be made up of a winding and a plurality of Secondary Winding, Secondary Winding is provided with 2 at least, and one of them Secondary Winding of a plurality of Secondary Winding is as winding to be measured, and all the other Secondary Winding two ends connect back ground connection through lead.Current transformer T to be measured
1The P end of a winding connect the L end of standard current transformer, current transformer T to be measured
1The secondary current non-polar end through current capacity case Z
BThe seized end that connects error measuring means 1, standard current transformer T
0The secondary current non-polar end connect the normal end of error measuring means 1, current transformer T to be measured
1Polar end and standard current transformer T
0The polar end parallel connection after connect the polar end of error measuring means.
This device is through current transformer T more to be measured in error measuring means 1
1With standard current transformer T
0The difference of electric current draws error amount.
Claims (3)
1. current transformer error measurement mechanism; This device connects current transformer to be measured; It is characterized in that; Described device comprises current lifting device, standard current transformer and error measuring means; Described current lifting device connects standard current transformer and current transformer to be measured respectively, and the P end of a winding of described current transformer to be measured connects the L end of standard current transformer, and the secondary current non-polar end of described current transformer to be measured connects the seized end of error measuring means through the current capacity case; The secondary current non-polar end of described standard current transformer connects the normal end of error measuring means, is connected the polar end of error measuring means after the polar end parallel connection of the polar end of described current transformer to be measured and standard current transformer.
2. a kind of current transformer error measurement mechanism according to claim 1; It is characterized in that; Described current transformer to be measured is made up of a winding and a plurality of Secondary Winding; Said one of them Secondary Winding of a plurality of Secondary Winding is as winding to be measured, and all the other Secondary Winding two ends connect back ground connection through lead.
3. a kind of current transformer error measurement mechanism according to claim 2 is characterized in that described Secondary Winding is provided with 2 at least.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201214593U CN202502243U (en) | 2012-03-27 | 2012-03-27 | Error measurement device for current transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201214593U CN202502243U (en) | 2012-03-27 | 2012-03-27 | Error measurement device for current transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202502243U true CN202502243U (en) | 2012-10-24 |
Family
ID=47038853
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201214593U Expired - Lifetime CN202502243U (en) | 2012-03-27 | 2012-03-27 | Error measurement device for current transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202502243U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105974352A (en) * | 2016-06-20 | 2016-09-28 | 国网天津市电力公司 | Ultra-high voltage current transformer error field test monitoring method |
-
2012
- 2012-03-27 CN CN2012201214593U patent/CN202502243U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105974352A (en) * | 2016-06-20 | 2016-09-28 | 国网天津市电力公司 | Ultra-high voltage current transformer error field test monitoring method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121024 |