CN2248877Y - Electric current safety and error compensation device - Google Patents
Electric current safety and error compensation device Download PDFInfo
- Publication number
- CN2248877Y CN2248877Y CN 95238643 CN95238643U CN2248877Y CN 2248877 Y CN2248877 Y CN 2248877Y CN 95238643 CN95238643 CN 95238643 CN 95238643 U CN95238643 U CN 95238643U CN 2248877 Y CN2248877 Y CN 2248877Y
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- China
- Prior art keywords
- coil
- electric current
- utility
- model
- current
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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 - Fee Related
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- Transformers For Measuring Instruments (AREA)
- Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
Abstract
The utility model relates to a current safety error compensation device, comprising a casing, an insulating supporting frame, an iron core, a coil, and a wiring terminal. The utility model is characterized in that the iron core which is wound with a coil is arranged in the casing by the insulating supporting frame; five taps are arranged on the coil; the taps are respectively connected with wiring terminals. Matched with a current mutual inductor, the utility model has the advantages of measuring level of current mutual inductors improved, precision of meters maintained, and service life of meters extended.
Description
The utility model relates to the essential electronic element technical field, particularly a kind of electric current security personnel error compensator of measuring current value.
At present, generating plant and each step voltage electric substation at China's power network generally use 0,5 grades current transformer and reometer are measured electric weight, its error rate is ± 5%, safety coefficient is 15, and the indicated value of reometer is lower than the true value in the electrical network often, because 0, the precision of 5 grades of current transformers does not reach international standard, has caused very big waste.
The purpose of this utility model provides a kind of mutual inductor that improves and measures grade, reduces the electric current security personnel error compensator of measuring error.
The utility model is to realize like this, it comprises housing, insulation bracing frame, iron stamen, coil and connection terminal, it is characterized in that the iron stamen that will be wound with coil is installed in the housing by insulating support, coil is provided with five taps, and this tap is connected with connection terminal respectively.
This electric current security personnel's error compensator and current transformer are used, principle by the secondary current root a tree name magnetic potential balance on the current transformer can be compensated, improve the measurement grade of current transformer, root a tree name ferromagnetic characteristic again, the control of safety coefficient is because current value constantly increases, electric current when reaching certain value in the instrument just is not directly proportional with the secondary current in the current transformer, and the precision of instrument can be guaranteed, and prolongs the serviceable life of instrument.
Below in conjunction with accompanying drawing the utility model is further described,
Fig. 1 is the structural representation of electric current security personnel error compensator, and Fig. 2 is the user mode synoptic diagram of electric current security personnel error compensator.
As Fig. 1--shown in 2, this electric current security personnel error compensator comprises housing 1, insulation bracing frame 2, iron stamen 3, coil 4 and connection terminal 5, the iron stamen 3 that is wound with coil 4 is installed in the housing 1 by insulating support 2, and coil 4 is provided with five taps, and this tap is connected with connection terminal 5 respectively; During use electric current ensured public security error compensator 6 and current transformer 7 is installed on the reometer after in parallel, when electric current passes through gauze, on current transformer 7 and electric current security personnel error compensator 6, produce induction current simultaneously and constitute the loop with reometer 8, but the root a tree name is measured the tap that the needs of grade are selected connection terminal 5, reaches the purpose of current compensation.
Claims (1)
1, a kind of electric current security personnel error compensator, it comprises housing, insulation bracing frame, iron stamen, coil and connection terminal, it is characterized in that the iron stamen that will be wound with coil is installed in the housing by insulating support, coil is provided with five taps, and this tap is connected with connection terminal respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95238643 CN2248877Y (en) | 1995-12-26 | 1995-12-26 | Electric current safety and error compensation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95238643 CN2248877Y (en) | 1995-12-26 | 1995-12-26 | Electric current safety and error compensation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2248877Y true CN2248877Y (en) | 1997-03-05 |
Family
ID=33880837
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 95238643 Expired - Fee Related CN2248877Y (en) | 1995-12-26 | 1995-12-26 | Electric current safety and error compensation device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2248877Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102928633A (en) * | 2012-11-21 | 2013-02-13 | 保定天威互感器有限公司 | Heavy-current mutual inductor error testing method and anti-toppling testing brackets for GIS (Gas Insulated Substation) |
| CN103823095A (en) * | 2014-02-27 | 2014-05-28 | 上海品研测控技术有限公司 | Rogowski coil compensation device |
-
1995
- 1995-12-26 CN CN 95238643 patent/CN2248877Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102928633A (en) * | 2012-11-21 | 2013-02-13 | 保定天威互感器有限公司 | Heavy-current mutual inductor error testing method and anti-toppling testing brackets for GIS (Gas Insulated Substation) |
| CN103823095A (en) * | 2014-02-27 | 2014-05-28 | 上海品研测控技术有限公司 | Rogowski coil compensation device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |