CN204118696U - Intelligent selection current transformer winding secondary side open-circuit protector circuit - Google Patents
Intelligent selection current transformer winding secondary side open-circuit protector circuit Download PDFInfo
- Publication number
- CN204118696U CN204118696U CN201420504489.1U CN201420504489U CN204118696U CN 204118696 U CN204118696 U CN 204118696U CN 201420504489 U CN201420504489 U CN 201420504489U CN 204118696 U CN204118696 U CN 204118696U
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- circuit
- winding
- measuring unit
- secondary side
- protector
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- Expired - Fee Related
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Abstract
The utility model relates to intelligent selection current transformer winding secondary side open-circuit protector circuit, and it relates to electrical power distribution switchgear technical field.It is characterized in that it comprises open-circuit protector, measuring unit winding circuit, protected location winding circuit, measuring unit winding circuit is connected with open-circuit protector respectively with protected location winding circuit.It is simple that the utility model has structure, easy to operate, can effectively inquire about circuit and the feature such as maintenance.
Description
Technical field
The utility model relates to electrical power distribution switchgear technical field, is specifically related to intelligent selection current transformer winding secondary side open-circuit protector circuit.
Background technology
Increasingly mature along with electric automatization; various protection type components and parts emerge in an endless stream; in electric power system, current transformer plays and big current is reduced into small area analysis carries out protecting, measuring; if but equipment long-play; or Current Transformer Secondary side open circuit will cause secondary side voltage to raise in transport; badly influence protection, even injure personal safety as well as the property safety.In nowadays existing product, CT open-circuit protector has dumb; if single phasing protection loop current is opened a way; this protector can be got through by piezo-resistance and connect with the earth; instrument transformer secondary side is made to form loop; but shielded by the defencive function of this phase, the protection measure and control unit be connected with this does not have effect yet simultaneously.
Summary of the invention
The purpose of this utility model is to provide intelligent selection current transformer winding secondary side open-circuit protector circuit, and it is simple that it has structure, easy to operate, can effectively inquire about circuit and the feature such as maintenance.
In order to solve the problem existing for background technology; the utility model is by the following technical solutions: it comprises open-circuit protector, measuring unit winding circuit, protected location winding circuit, and measuring unit winding circuit is connected with open-circuit protector respectively with protected location winding circuit.
Described measuring unit winding circuit comprises three windings and measuring unit, three winding parallels, and three windings are connected with measuring unit respectively.
Described protected location winding circuit comprises three windings and protected location, three winding parallels, and three windings are connected with protected location respectively.
Described open-circuit protector comprises intelligent monitor, piezo-resistance, intelligent monitor has six delivery outlets, and be connected with six windings of protected location winding circuit with measuring unit winding circuit respectively, piezo-resistance is connected with intelligent monitor.
The advantage that the utility model has:
There is intelligent selection protection type or measurement type, if the input string measuring level can make protective loop normally work as protective loop according to the polarity of input analog amount by protected level open circuit intelligent monitor automatically, prevent unnecessary electric misoperation, and shielding failure; Send again switching value alarm signal, tell this instrument transformer of backstage concrete corresponding winding open circuit, convenient inquiry and maintenance, make it to fix a breakdown rapidly simultaneously.
accompanying drawing explanation
Fig. 1 is the utility model structural representation.
Embodiment
With reference to Fig. 1, it comprises open-circuit protector, measuring unit winding circuit, protected location winding circuit, and measuring unit winding circuit is connected with open-circuit protector respectively with protected location winding circuit.
Described measuring unit winding circuit comprises three windings and measuring unit, three winding parallels, and three windings are connected with measuring unit respectively.
Described protected location winding circuit comprises three windings and protected location, three winding parallels, and three windings are connected with protected location respectively.
Described open-circuit protector comprises intelligent monitor, piezo-resistance, intelligent monitor has six delivery outlets, and be connected with six windings of protected location winding circuit with measuring unit winding circuit respectively, piezo-resistance is connected with intelligent monitor.
Claims (4)
1. intelligent selection current transformer winding secondary side open-circuit protector circuit; it is characterized in that it comprises open-circuit protector, measuring unit winding circuit, protected location winding circuit, measuring unit winding circuit is connected with open-circuit protector respectively with protected location winding circuit.
2. intelligent selection current transformer winding secondary side open-circuit protector circuit according to claim 1; it is characterized in that described measuring unit winding circuit comprises three windings and measuring unit; three winding parallels, three windings are connected with measuring unit respectively.
3. intelligent selection current transformer winding secondary side open-circuit protector circuit according to claim 1; it is characterized in that described protected location winding circuit comprises three windings and protected location; three winding parallels, three windings are connected with protected location respectively.
4. intelligent selection current transformer winding secondary side open-circuit protector circuit according to claim 1; it is characterized in that open-circuit protector comprises intelligent monitor, piezo-resistance; intelligent monitor there are six delivery outlets; be connected with six windings of protected location winding circuit with measuring unit winding circuit respectively, piezo-resistance is connected with intelligent monitor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420504489.1U CN204118696U (en) | 2014-09-03 | 2014-09-03 | Intelligent selection current transformer winding secondary side open-circuit protector circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420504489.1U CN204118696U (en) | 2014-09-03 | 2014-09-03 | Intelligent selection current transformer winding secondary side open-circuit protector circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204118696U true CN204118696U (en) | 2015-01-21 |
Family
ID=52335976
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420504489.1U Expired - Fee Related CN204118696U (en) | 2014-09-03 | 2014-09-03 | Intelligent selection current transformer winding secondary side open-circuit protector circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204118696U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104836200A (en) * | 2015-06-01 | 2015-08-12 | 安徽禄讯电子科技有限公司 | Open circuit protector circuit of secondary side of current transformer winding capable of intelligent selection |
| CN104953547A (en) * | 2015-07-07 | 2015-09-30 | 安徽瑞宏信息科技有限公司 | Secondary side open-circuit protector circuit adopting windings and used for intelligent selection current transformer |
| CN104953548A (en) * | 2015-07-23 | 2015-09-30 | 合肥扬帆通信元器件有限公司 | Intelligent selective current transformer winding secondary side open circuit protector circuit |
| CN105093058A (en) * | 2015-06-03 | 2015-11-25 | 国家电网公司 | Method for determining whether secondary circuit of current transformer is left open-circuited and corresponding determining apparatus |
| CN105098711A (en) * | 2014-11-24 | 2015-11-25 | 芜湖蓝宙电子科技有限公司 | Intelligent selection current transformer winding secondary-side open-circuit protector circuit |
-
2014
- 2014-09-03 CN CN201420504489.1U patent/CN204118696U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105098711A (en) * | 2014-11-24 | 2015-11-25 | 芜湖蓝宙电子科技有限公司 | Intelligent selection current transformer winding secondary-side open-circuit protector circuit |
| CN104836200A (en) * | 2015-06-01 | 2015-08-12 | 安徽禄讯电子科技有限公司 | Open circuit protector circuit of secondary side of current transformer winding capable of intelligent selection |
| CN105093058A (en) * | 2015-06-03 | 2015-11-25 | 国家电网公司 | Method for determining whether secondary circuit of current transformer is left open-circuited and corresponding determining apparatus |
| CN104953547A (en) * | 2015-07-07 | 2015-09-30 | 安徽瑞宏信息科技有限公司 | Secondary side open-circuit protector circuit adopting windings and used for intelligent selection current transformer |
| CN104953548A (en) * | 2015-07-23 | 2015-09-30 | 合肥扬帆通信元器件有限公司 | Intelligent selective current transformer winding secondary side open circuit protector circuit |
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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: 20150121 Termination date: 20150903 |
|
| EXPY | Termination of patent right or utility model |