CN203465397U - esting circuit capable of detecting residual current operated circuit breaker remotely - Google Patents
esting circuit capable of detecting residual current operated circuit breaker remotely Download PDFInfo
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- CN203465397U CN203465397U CN201320581470.2U CN201320581470U CN203465397U CN 203465397 U CN203465397 U CN 203465397U CN 201320581470 U CN201320581470 U CN 201320581470U CN 203465397 U CN203465397 U CN 203465397U
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Abstract
The utility model relates to a circuit, especially to a testing circuit capable of detecting a residual current operated circuit breaker remotely. According to the technical scheme, the testing circuit is characterized in that a first terminal of a second testing winding is grounded; and a bidirectional optocoupler U1 is connected to a second terminal of a second testing winding and is electrically connected with a micro controller unit (MCU) by the bidirectional optocoupler U1. On the basis of the scheme, in order to solve problems existing in the prior art, the testing circuit capable of detecting a residual current operated circuit breaker remotely is provided. Because of communication between an upper computer and the MCU, the MCU controls turning on and turning off of the bidirectional optocoupler, so that a zero-sequence current transformer detects a residual current; and processing is carried out by a sampling circuit and thus the residual current operated circuit breaker is opened, thereby completing testing on the residual current operated circuit breaker.
Description
Technical field
The utility model relates to a kind of circuit, refer to especially can remote detection residual current action breaker hookup.
Background technology
Residual current action breaker application is more and more extensive, and network communication is more and more universal.And existing most of residual current action breaker is all without communicator, can only go to scene to carry out test button operation to residual current action breaker by manpower, verify whether residual current action breaker can work; Or only a few has communication function, also just by between host computer and MCU, communicate by letter, by MCU, to electrical apparatus release or a signal of switching-off device transmission, make residual current action breaker separating brake, and can not really accomplish to detect zero sequence current mutual inductor, whether residual current signal deteching circuit can work, as shown in Figure 1.
Summary of the invention
The utility model overcomes the problem that prior art exists, provide a kind of by communicating by letter between host computer and MCU, by MCU, controlled the break-make of two-way optocoupler, make zero sequence current mutual inductor a residual current be detected, and by the processing of sample circuit, make residual current action breaker separating brake, thereby complete, residual current action breaker is carried out to experimental test, with the novel hookup that can remote detection residual current action breaker of verifying that residual current action breaker whether can reliability service.
Realize above-mentioned purpose, the utility model adopts following technology: a kind of hookup that can remote detection residual current action breaker, include zero sequence current mutual inductor ZCT, residual current input treatment circuit unit, micro-control unit MCU and host computer, on current transformer ZCT, be provided with sampling winding and the second test winding, the winding of wherein sampling is connected on residual current input treatment circuit unit, it is characterized in that: the first end ground connection of described the second test winding, on the second end of the second test winding, be connected with two-way optocoupler U1, and realize and being electrically connected to micro-control unit MCU by two-way optocoupler U1.
By adopting such scheme, can remote detection residual current action breaker whether can reliably working.
Further setting of the present utility model is: described second test the second end of winding and the pin 3 of two-way optocoupler U1 are connected, on the pin 4 of two-way optocoupler U1, be connected with resistance R 1, resistance R 1 other end is connected with AC signal, between the pin 3 of two-way optocoupler U1 and pin 4, be connected with test button, be connected to+5V of anode pin 1 power supply of two-way optocoupler U1, on the negative electrode pin 2 of two-way optocoupler U1, be connected with triode Q1, and be connected on the collector of triode Q1, the grounded emitter of triode Q1, the base stage of triode Q1 is connected to resistance R 2, resistance R 2 other ends are connected with micro-control unit MCU, resistance R 2 is connected to capacitor C 1 with micro-control unit MCU junction, capacitor C 1 other end ground connection.
By adopting such scheme, be to further optimization of the present utility model, its object is all for more stable work.
Below in conjunction with drawings and embodiments, the utility model is described further.
Accompanying drawing explanation
Fig. 1 is the utility model embodiment background technology circuit diagram;
Fig. 2 is the circuit diagram of the utility model embodiment.
Specific embodiment
As shown in Figure 2, a kind of hookup that can remote detection residual current action breaker, include zero sequence current mutual inductor ZCT5, residual current input treatment circuit unit 6, micro-control unit MCU7 and host computer 8, on current transformer ZCT5, be provided with sampling winding 51 and the second test winding 52, the winding 51 of wherein sampling is connected on residual current input treatment circuit unit 6, in the present embodiment, the first end ground connection of described the second test winding 52, on the second end of the second test winding 52, be connected with two-way optocoupler U1, and second test the second end of winding 52 and the pin 3 of two-way optocoupler U1 are connected, on the pin 4 of two-way optocoupler U1, be connected with resistance R 1, resistance R 1 other end is connected with AC signal, between the pin 3 of two-way optocoupler U1 and pin 4, be connected with test button K1, be connected to+5V of anode pin 1 power supply of two-way optocoupler U1, on the negative electrode pin 2 of two-way optocoupler U1, be connected with triode Q1, and be connected on the collector of triode Q1, the grounded emitter of triode Q1, the base stage of triode Q1 is connected to resistance R 2, resistance R 2 other ends are connected with micro-control unit MCU7, resistance R 2 is connected to capacitor C 1 with micro-control unit MCU7 junction, capacitor C 1 other end ground connection.
Specific works principle: send instructions to micro-control unit MCU7 by host computer 8, then micro-control unit MCU7 exports a high level signal, through capacitor C 1 filtering and resistance R 2 current limlitings, drive triode Q1, make the negative electrode pin 2 of two-way optocoupler U1 obtain a low level, thereby make two-way optocoupler U1 work, then the pin 3 of two-way optocoupler U1 and pin 4 conductings, the AC signal of AC flows to from the pin 4 of two-way optocoupler U1, the second end of zero sequence current mutual inductor ZCT 5, the sampling winding 51 of zero sequence current mutual inductor ZCT5 just senses a signal, through residual current input treatment circuit unit 6, AD by micro-control unit MCU7 samples again, calculate, then by sending instructions to residual current action breaker ACT, make residual current action breaker ACT separating brake and obtain the information of a separating brake, and feed back to host computer 8 by micro-control unit MCU7, then judge whether residual current action breaker can work.
The utility model discloses, and is a kind of of preferred embodiment, and local change or modification and come from technological thought of the present utility model and be easy to by the people who has the knack of this technology the person of knowing by inference such as, does not all take off patent category of the present utility model.
Claims (2)
- One kind can remote detection residual current action breaker hookup, include zero sequence current mutual inductor ZCT, residual current input treatment circuit unit, micro-control unit MCU and host computer, on current transformer ZCT, be provided with sampling winding and the second test winding, the winding of wherein sampling is connected on residual current input treatment circuit unit, it is characterized in that: the first end ground connection of described the second test winding, on the second end of the second test winding, be connected with two-way optocoupler U1, and realize and being electrically connected to micro-control unit MCU by two-way optocoupler U1.
- 2. hookup that can remote detection residual current action breaker according to claim 1, it is characterized in that: described second test the second end of winding and the pin 3 of two-way optocoupler U1 are connected, on the pin 4 of two-way optocoupler U1, be connected with resistance R 1, resistance R 1 other end is connected with AC signal AC, between the pin 3 of two-way optocoupler U1 and pin 4, be connected with test button, be connected to+5V of anode pin 1 power supply of two-way optocoupler U1, on the negative electrode pin 2 of two-way optocoupler U1, be connected with triode Q1, and be connected on the collector of triode Q1, the grounded emitter of triode Q1, the base stage of triode Q1 is connected to resistance R 2, resistance R 2 other ends are connected with micro-control unit MCU, resistance R 2 is connected to capacitor C 1 with micro-control unit MCU junction, capacitor C 1 other end ground connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320581470.2U CN203465397U (en) | 2013-09-18 | 2013-09-18 | esting circuit capable of detecting residual current operated circuit breaker remotely |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320581470.2U CN203465397U (en) | 2013-09-18 | 2013-09-18 | esting circuit capable of detecting residual current operated circuit breaker remotely |
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| Publication Number | Publication Date |
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| CN203465397U true CN203465397U (en) | 2014-03-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201320581470.2U Expired - Lifetime CN203465397U (en) | 2013-09-18 | 2013-09-18 | esting circuit capable of detecting residual current operated circuit breaker remotely |
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| CN (1) | CN203465397U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103487750A (en) * | 2013-09-18 | 2014-01-01 | 德力西电气有限公司 | Testing circuit capable of detecting residual current operated circuit breaker in remote mode |
| CN113671232A (en) * | 2021-07-06 | 2021-11-19 | 国网思极神往位置服务（北京）有限公司 | Residual current detection device |
-
2013
- 2013-09-18 CN CN201320581470.2U patent/CN203465397U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103487750A (en) * | 2013-09-18 | 2014-01-01 | 德力西电气有限公司 | Testing circuit capable of detecting residual current operated circuit breaker in remote mode |
| CN113671232A (en) * | 2021-07-06 | 2021-11-19 | 国网思极神往位置服务（北京）有限公司 | Residual current detection device |
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Granted publication date: 20140305 |