CN104953548A - Intelligent selective current transformer winding secondary side open circuit protector circuit - Google Patents
Intelligent selective current transformer winding secondary side open circuit protector circuit Download PDFInfo
- Publication number
- CN104953548A CN104953548A CN201510436324.4A CN201510436324A CN104953548A CN 104953548 A CN104953548 A CN 104953548A CN 201510436324 A CN201510436324 A CN 201510436324A CN 104953548 A CN104953548 A CN 104953548A
- Authority
- CN
- China
- Prior art keywords
- circuit
- winding
- protector
- measuring unit
- secondary side
- Prior art date
- 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.)
- Pending
Links
Abstract
The invention discloses an intelligent selective current transformer winding secondary side open circuit protector circuit, and relates to the technical field of electric power transmission and distribution switch equipment. The 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 respectively connected with the open circuit protector. The circuit has the characteristics that the structure is simple, the operation is convenient, and the circuit can be inquired and maintained effectively.
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 |
|---|---|---|---|
| CN201510436324.4A CN104953548A (en) | 2015-07-23 | 2015-07-23 | Intelligent selective current transformer winding secondary side open circuit protector circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510436324.4A CN104953548A (en) | 2015-07-23 | 2015-07-23 | Intelligent selective current transformer winding secondary side open circuit protector circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104953548A true CN104953548A (en) | 2015-09-30 |
Family
ID=54168009
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510436324.4A Pending CN104953548A (en) | 2015-07-23 | 2015-07-23 | Intelligent selective current transformer winding secondary side open circuit protector circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104953548A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1208626B1 (en) * | 1999-08-13 | 2003-07-09 | Eaton Corporation | Non-automatic power circuit breaker including trip mechanism which is disabled after closure of separable contacts |
| CN201142567Y (en) * | 2007-12-13 | 2008-10-29 | 广州霍斯通电气有限公司 | Secondary side open circuit protecting equipment of current mutual inductor |
| 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 |
| 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 |
| 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 |
| 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
- 2015-07-23 CN CN201510436324.4A patent/CN104953548A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1208626B1 (en) * | 1999-08-13 | 2003-07-09 | Eaton Corporation | Non-automatic power circuit breaker including trip mechanism which is disabled after closure of separable contacts |
| CN201142567Y (en) * | 2007-12-13 | 2008-10-29 | 广州霍斯通电气有限公司 | Secondary side open circuit protecting equipment of current mutual inductor |
| 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 |
| 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 |
| 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 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204118696U (en) | Intelligent selection current transformer winding secondary side open-circuit protector circuit | |
| CN102332699A (en) | Ground wire safety voltage control system | |
| KR101451387B1 (en) | The Switchboard with the device of sensing open state of the secondary terminal and protecting of a current transformer | |
| CN202159961U (en) | Ground wire safe voltage control system | |
| CN104821545A (en) | Intelligent selection current transformer winding secondary side open circuit protector circuit | |
| CA3027172C (en) | High voltage training device and system and method thereof | |
| KR101451389B1 (en) | The Switchboard with the device of sensing open state and protecting of a current transformer | |
| CN103683225A (en) | Ground fault protection method of nuclear plant low-voltage power distribution system in all power supply ranges | |
| CN104953547A (en) | Secondary side open-circuit protector circuit adopting windings and used for intelligent selection current transformer | |
| CN104836200A (en) | Open circuit protector circuit of secondary side of current transformer winding capable of intelligent selection | |
| CN105098711A (en) | Intelligent selection current transformer winding secondary-side open-circuit protector circuit | |
| CN103427394A (en) | Mining flame-proof type selective leakage protector | |
| US20110178649A1 (en) | Method for preventing electric shock by contact with connected-to-ground electric appliances and installations, and apparatus therefor | |
| CN105703349A (en) | Low excitation impedance transformer single-phase grounding protection device and protection method | |
| WO2014090206A3 (en) | Intelligent online fault-proofing protection system | |
| CN104821547A (en) | Circuit having protector function | |
| CN104821546A (en) | Protector circuit | |
| CN203983954U (en) | Transformer neutral point is through circuit breaker parallel low resistance earthing device | |
| CN105529685B (en) | A kind of interim IT grounded system switching method of frequency conversion load with TT grounded systems low-pressure system under leak current fault | |
| CN103683187B (en) | Nuclear power station two-part leak current fault guard method | |
| CN104953548A (en) | Intelligent selective current transformer winding secondary side open circuit protector circuit | |
| CN105932642A (en) | Circuit with protector function | |
| CN104300493A (en) | Intelligent leakage protection device | |
| CN204832319U (en) | Multi -functional pointer ampere meter | |
| CN106229943A (en) | Intelligent selection current transformer winding secondary side open-circuit protector circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into 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: 20150930 |