CN103487750A - Testing circuit capable of detecting residual current operated circuit breaker in remote mode - Google Patents
Testing circuit capable of detecting residual current operated circuit breaker in remote mode Download PDFInfo
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- CN103487750A CN103487750A CN201310431770.7A CN201310431770A CN103487750A CN 103487750 A CN103487750 A CN 103487750A CN 201310431770 A CN201310431770 A CN 201310431770A CN 103487750 A CN103487750 A CN 103487750A
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Abstract
The invention relates to a circuit, in particular to a testing circuit capable of detecting a residual current operated circuit breaker in a remote mode. The testing circuit capable of detecting the residual current operated circuit breaker in the remote mode is characterized in that a first end of a second testing winding is connected to the ground, and a second end of the second testing winding is connected with a double-direction optocoupler U1 and is electrically connected with a micro-control unit (MCU) through the double-direction optocoupler U1. According to the technical scheme, the problem existing in the prior art is solved, the novel testing circuit capable of detecting the residual current operated circuit breaker in the remote mode is in communication with the MCU through an upper computer, connecting and disconnecting of the double-direction optocoupler are controlled through the MCU, so that a zero sequence current mutual inductor detects a residual current, by processing of a sampling circuit, a residual current operated circuit breaker is subjected to brake opening, and accordingly testing of the residual current operated circuit breaker is completed.
Description
Technical field
The present invention relates to a kind of circuit, but refer to especially the hookup of remote detection residual current action breaker.
Background technology
The 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 breakers can only go to scene to carry out the test button operation to residual current action breaker by manpower all without communicator, 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, make the residual current action breaker separating brake by MCU to electrical apparatus release or a signal of switching-off device transmission, and can not really accomplish to detect zero sequence current mutual inductor, whether the residual current signal deteching circuit can work, as shown in Figure 1.
Summary of the invention
The present invention overcomes the problem that prior art exists, provide a kind of by communicating by letter between host computer and MCU, controlled the break-make of two-way optocoupler by MCU, make zero sequence current mutual inductor a residual current be detected, and by the processing of sample circuit, make the residual current action breaker separating brake, thereby complete, residual current action breaker is carried out to experimental test, but the hookup of novel remote detection residual current action breaker that whether can reliability service with the checking residual current action breaker.
Realize above-mentioned purpose, the present invention adopts following technology: but a kind of hookup of 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, be provided with sampling winding and the second test winding on current transformer ZCT, 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, be connected with two-way optocoupler U1 on the second end of the second test winding, and realize being electrically connected to by two-way optocoupler U1 and micro-control unit MCU.
By adopting such scheme, but whether the remote detection residual current action breaker can reliably working.
The further setting of the present invention is: the second end of described the second test winding is connected with the pin 3 of two-way optocoupler U1, be connected with resistance R 1 on the pin 4 of two-way optocoupler U1, resistance R 1 other end is connected with AC signal, be connected with test button between the pin 3 of two-way optocoupler U1 and pin 4, be connected to+5V of anode pin 1 power supply of two-way optocoupler U1, be connected with triode Q1 on the negative electrode pin 2 of two-way optocoupler U1, 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 invention, its purpose is all for more stable work.
Below in conjunction with drawings and embodiments, the present invention is described further.
The accompanying drawing explanation
Fig. 1 is embodiment of the present invention background technology circuit diagram;
The circuit diagram that Fig. 2 is the embodiment of the present invention.
Specific embodiment
As shown in Figure 2, but a kind of hookup of 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, be provided with sampling winding 51 and the second test winding 52 on current transformer ZCT5, 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, be connected with two-way optocoupler U1 on the second end of the second test winding 52, and the second end of the second test winding 52 is connected with the pin 3 of two-way optocoupler U1, be connected with resistance R 1 on the pin 4 of two-way optocoupler U1, resistance R 1 other end is connected with AC signal, be connected with test button K1 between the pin 3 of two-way optocoupler U1 and pin 4, be connected to+5V of anode pin 1 power supply of two-way optocoupler U1, be connected with triode Q1 on the negative electrode pin 2 of two-way optocoupler U1, 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: by host computer 8, send instructions to micro-control unit MCU7, 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 is just sensed a signal, through residual current input treatment circuit unit 6, again by the AD sampling of micro-control unit MCU7, 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.
Disclosed, be a kind of of preferred embodiment, local change or modification and come from technological thought of the present invention and be easy to by the people who has the knack of this technology the person of knowing by inference such as, all do not take off patent category of the present invention.
Claims (2)
1. but the hookup of a 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, be provided with sampling winding and the second test winding on current transformer ZCT, 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, be connected with two-way optocoupler U1 on the second end of the second test winding, and realize being electrically connected to by two-way optocoupler U1 and micro-control unit MCU.
2. but the hookup of remote detection residual current action breaker according to claim 1, it is characterized in that: the second end of described the second test winding is connected with the pin 3 of two-way optocoupler U1, be connected with resistance R 1 on the pin 4 of two-way optocoupler U1, resistance R 1 other end is connected with AC signal AC, be connected with test button between the pin 3 of two-way optocoupler U1 and pin 4, be connected to+5V of anode pin 1 power supply of two-way optocoupler U1, be connected with triode Q1 on the negative electrode pin 2 of two-way optocoupler U1, 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 |
|---|---|---|---|
| CN201310431770.7A CN103487750A (en) | 2013-09-18 | 2013-09-18 | Testing circuit capable of detecting residual current operated circuit breaker in remote mode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310431770.7A CN103487750A (en) | 2013-09-18 | 2013-09-18 | Testing circuit capable of detecting residual current operated circuit breaker in remote mode |
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| CN103487750A true CN103487750A (en) | 2014-01-01 |
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| CN201310431770.7A Pending CN103487750A (en) | 2013-09-18 | 2013-09-18 | Testing circuit capable of detecting residual current operated circuit breaker in remote mode |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104880666A (en) * | 2015-05-13 | 2015-09-02 | 国家电网公司 | Remote testing device of automatic grounding operation |
| CN106451375A (en) * | 2016-08-29 | 2017-02-22 | 厦门盈瑞丰电子科技有限公司 | Residual current monitor for equipment |
| CN107526010A (en) * | 2017-09-30 | 2017-12-29 | 南京国电南自电网自动化有限公司 | A kind of distributed small current earthing wire-selecting method based on double CT samplings |
| WO2018196531A1 (en) * | 2017-04-24 | 2018-11-01 | 深圳曼顿科技有限公司 | Novel circuit breaker leakage detection device and low voltage circuit breaker |
| CN109541287A (en) * | 2018-12-29 | 2019-03-29 | 天津康途科技有限公司 | A kind of leak current detection device |
| CN109901065A (en) * | 2019-04-08 | 2019-06-18 | 国网福建省电力有限公司 | A kind of Aftercurrent protection circuit breaker |
| CN110531139A (en) * | 2019-08-28 | 2019-12-03 | 徐州徐工矿业机械有限公司 | The current monitoring system and control method at a kind of movable Crushing screening station |
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| CN103001175A (en) * | 2011-09-19 | 2013-03-27 | 本德尔有限两合公司 | Electrical monitoring device and method for safeguarding the protective function of a type A residual current device |
| CN203465397U (en) * | 2013-09-18 | 2014-03-05 | 德力西电气有限公司 | esting circuit capable of detecting residual current operated circuit breaker remotely |
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| GB2277598A (en) * | 1993-04-20 | 1994-11-02 | Jekyll Electronic Technology L | Portable appliance testers |
| CN101900771A (en) * | 2009-05-31 | 2010-12-01 | 西门子公司 | RCD (Residual Current Device) detection device and detection method |
| CN101888082A (en) * | 2010-07-09 | 2010-11-17 | 上海诺雅克电气有限公司 | Residual current protector |
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| CN203465397U (en) * | 2013-09-18 | 2014-03-05 | 德力西电气有限公司 | esting circuit capable of detecting residual current operated circuit breaker remotely |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104880666A (en) * | 2015-05-13 | 2015-09-02 | 国家电网公司 | Remote testing device of automatic grounding operation |
| CN104880666B (en) * | 2015-05-13 | 2017-11-17 | 国家电网公司 | A kind of remote auto landing operation experimental rig |
| CN106451375A (en) * | 2016-08-29 | 2017-02-22 | 厦门盈瑞丰电子科技有限公司 | Residual current monitor for equipment |
| WO2018196531A1 (en) * | 2017-04-24 | 2018-11-01 | 深圳曼顿科技有限公司 | Novel circuit breaker leakage detection device and low voltage circuit breaker |
| CN107526010A (en) * | 2017-09-30 | 2017-12-29 | 南京国电南自电网自动化有限公司 | A kind of distributed small current earthing wire-selecting method based on double CT samplings |
| CN109541287A (en) * | 2018-12-29 | 2019-03-29 | 天津康途科技有限公司 | A kind of leak current detection device |
| CN109901065A (en) * | 2019-04-08 | 2019-06-18 | 国网福建省电力有限公司 | A kind of Aftercurrent protection circuit breaker |
| CN110531139A (en) * | 2019-08-28 | 2019-12-03 | 徐州徐工矿业机械有限公司 | The current monitoring system and control method at a kind of movable Crushing screening station |
| CN110531139B (en) * | 2019-08-28 | 2021-07-20 | 徐州徐工矿业机械有限公司 | Current monitoring system of mobile crushing and screening station and control method |
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Application publication date: 20140101 |