CN104836200A - Open circuit protector circuit of secondary side of current transformer winding capable of intelligent selection - Google Patents
Open circuit protector circuit of secondary side of current transformer winding capable of intelligent selection Download PDFInfo
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- CN104836200A CN104836200A CN201510289094.3A CN201510289094A CN104836200A CN 104836200 A CN104836200 A CN 104836200A CN 201510289094 A CN201510289094 A CN 201510289094A CN 104836200 A CN104836200 A CN 104836200A
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Abstract
An open circuit protector circuit of the secondary side of a current transformer winding capable of intelligent selection relates to the technical field of power transmission and distribution switchgear. The open circuit protector circuit is characterized by comprising an open circuit protector, a measuring unit winding circuit and a protection unit winding circuit, wherein the measuring unit winding circuit and the protection unit winding circuit are connected with the open circuit protector. The open circuit protector circuit is characterized by simple structure, convenient operation, capabilities of inquiring and maintaining lines effectively, and the like.
Description
Technical field
The present invention relates to electrical power distribution switchgear technical field, be 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 object of this invention is to provide intelligent selection current transformer winding secondary side open-circuit protector circuit, 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 present invention 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 present invention 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 illustrates:
Fig. 1 is structural representation of the present invention.
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 |
|---|---|---|---|
| CN201510289094.3A CN104836200A (en) | 2015-06-01 | 2015-06-01 | Open circuit protector circuit of secondary side of current transformer winding capable of intelligent selection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510289094.3A CN104836200A (en) | 2015-06-01 | 2015-06-01 | Open circuit protector circuit of secondary side of current transformer winding capable of intelligent selection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104836200A true CN104836200A (en) | 2015-08-12 |
Family
ID=53813903
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510289094.3A Pending CN104836200A (en) | 2015-06-01 | 2015-06-01 | Open circuit protector circuit of secondary side of current transformer winding capable of intelligent selection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104836200A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2602531Y (en) * | 2000-05-11 | 2004-02-04 | 铁道部第四勘测设计院 | Secondary open circuit protector for current transformer |
| CN2768267Y (en) * | 2005-02-19 | 2006-03-29 | 中山市富达电气有限公司 | Open-circuit-proof protector for current transformer |
| CN204118696U (en) * | 2014-09-03 | 2015-01-21 | 安徽国安电气股份有限公司 | Intelligent selection current transformer winding secondary side open-circuit protector circuit |
| CN104821546A (en) * | 2015-05-25 | 2015-08-05 | 舒尔环保科技（合肥）有限公司 | Protector circuit |
| CN104821547A (en) * | 2015-05-25 | 2015-08-05 | 舒尔环保科技（合肥）有限公司 | Circuit having protector function |
| CN104821545A (en) * | 2015-05-25 | 2015-08-05 | 舒尔环保科技（合肥）有限公司 | Intelligent selection current transformer winding secondary side open circuit protector circuit |
| 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 |
-
2015
- 2015-06-01 CN CN201510289094.3A patent/CN104836200A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2602531Y (en) * | 2000-05-11 | 2004-02-04 | 铁道部第四勘测设计院 | Secondary open circuit protector for current transformer |
| CN2768267Y (en) * | 2005-02-19 | 2006-03-29 | 中山市富达电气有限公司 | Open-circuit-proof protector for current transformer |
| CN204118696U (en) * | 2014-09-03 | 2015-01-21 | 安徽国安电气股份有限公司 | Intelligent selection current transformer winding secondary side open-circuit protector circuit |
| 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 |
| CN104821546A (en) * | 2015-05-25 | 2015-08-05 | 舒尔环保科技（合肥）有限公司 | Protector circuit |
| CN104821547A (en) * | 2015-05-25 | 2015-08-05 | 舒尔环保科技（合肥）有限公司 | Circuit having protector function |
| CN104821545A (en) * | 2015-05-25 | 2015-08-05 | 舒尔环保科技（合肥）有限公司 | Intelligent selection current transformer winding secondary side open circuit protector circuit |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| EXSB | Decision made by sipo to initiate substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150812 |