CN203054158U - Arc fault detecting device with working state indicating function - Google Patents
Arc fault detecting device with working state indicating function Download PDFInfo
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- CN203054158U CN203054158U CN 201320002404 CN201320002404U CN203054158U CN 203054158 U CN203054158 U CN 203054158U CN 201320002404 CN201320002404 CN 201320002404 CN 201320002404 U CN201320002404 U CN 201320002404U CN 203054158 U CN203054158 U CN 203054158U
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Abstract
The utility model discloses an arc fault detecting device with a working state indicating function. The arc fault detecting device comprises an arc fault circuit breaker arranged in a load loop, wherein the arc fault circuit breaker is a circuit protection mechanism provided with a microprocessor, the arc fault circuit breaker is provided with an indicating lamp (1) which is used for indicating the working state of the load loop, and the indicating lamp (1) is connected with the microprocessor. The arc fault detecting device has reasonable design, can display the working state of the arc fault circuit breaker before tripping by adopting the design of the indicating lamp (1), is very convenient to use, can effectively help to find out line faults and eliminate fault hidden dangers, and has the advantages of low cost and high market value.
Description
Technical field
The utility model relates to the route protection field, specifically, is a kind of arc fault detection device with duty indication.
Background technology
Continuous development along with Power Electronic Technique; when electrifing degree is more and more higher; also more and more urgent to the requirement that circuit detects; therefore; in the prior art; research at fault is also more and more; and the arc fault detection device just one of them; it is mainly used in by electric insulation aging; damaged or there was dampness in the air and the arc fault detection that causes includes arc-fault circuit interrupter (AFCI/AFDD), this technology is risen in the U.S. the earliest; the route protection that is used for aircraft; this series products technical application standard is UL1699 in the U.S., though the U.S. that is applied in of this product is popularized, also still belongs to blank in China up to now.And by known technology as can be known, comprising the arc fault detection device of U.S.'s product at present, for the judgement of fault electric arc all less than indication, and existing product can only be realized the branch state that closes of arc-fault circuit interrupter (AFDD) by mechanical realization, therefore, in actual use, concerning search failure cause and the hidden danger of in time fixing a breakdown extremely inconvenience, and just be based on above-mentioned situation, the utility model has been set forth a kind of arc fault detection device, have the duty indication of AFDD product operation, easy to use, reliable.
The utility model content
The purpose of this utility model is to provide a kind of arc fault detection device with duty indication, adopted the pilot lamp design that can show the load circuit duty, in actual application, be convenient to searching or the eliminating of potential faults of fault in the circuit, it is extremely convenient to use.
The utility model is achieved through the following technical solutions: a kind of arc fault detection device with duty indication; comprise the arc-fault circuit interrupter of being located in the load circuit; described arc-fault circuit interrupter is for being provided with the microprocessor circuit protection mechanism; owing to comprise the arc fault detection device of U.S.'s product at present; for the judgement of fault electric arc all less than indication; use very inconvenient; therefore; the utility model proposes the technical scheme of pilot lamp; be provided with the pilot lamp of indication load circuit duty at described arc-fault circuit interrupter; described pilot lamp is connected with microprocessor; this scheme is compared with the branch state that closes of realizing arc-fault circuit interrupter (AFDD) by mechanical realization; structure is simpler, and with low cost, has marketable value.
Described arc-fault circuit interrupter comprises arc detection circuitry and the trip circuit that links to each other with microprocessor respectively, is provided with electrical apparatus release in described trip circuit, and described electrical apparatus release is the control device of control load circuit switching; Described arc detection circuitry then is to link to each other with load circuit and detect the detection module of arc fault, and based on said structure as can be known, the utility model can be indicated load circuit on off state and arc fault by pilot lamp.During use, when arc-fault circuit interrupter was connected power supply, pilot lamp then will show the situation of last tripping operation, assists searching of fault with this.
For better realizing the utility model, described arc detection circuitry mainly is made up of the flame current mutual inductor, signal voltage follower and the signal gain device A1 that link to each other successively, described flame current mutual inductor is located in the load circuit, and described signal voltage follower then is connected with microprocessor by signal gain device A1.During use, the flame current mutual inductor converts detected arcing fault signal to voltage signal, and by signal voltage follower, signal gain device A1 current signal is passed in the microprocessor successively, wherein, signal gain device A1 has the effect that increases current signal.When transmitting, fault-signal, when connecting arc-fault circuit interrupter again, can be shown by pilot lamp in microprocessor by memory storage.
The utility model also can be realized the detection of leak current fault, its circuit structure is as follows: described arc-fault circuit interrupter also comprises the electric-leakage detection circuit that is connected on the microprocessor, and described electric-leakage detection circuit is the detection module of being located in the load circuit and detecting leak current fault.
For better realizing said structure, described electric-leakage detection circuit comprises leakage current transformer and the signal gain device A2 that links to each other successively, and described leakage current transformer is located in the load circuit; Described signal gain device A2 then is connected with microprocessor.
The utility model also is provided with arc-detection IC and feeler switch in described arc-fault circuit interrupter, the feedback self-detection circuit of described arc-detection IC for being connected with flame current mutual inductor, signal voltage follower, microprocessor respectively, described feeler switch is then simulated electric arc fault self-checking slowdown monitoring circuit and is started the control button that arc fault is reported to the police for starting, and is connected with microprocessor; In the utility model, detection module can carry out from detecting arc-fault circuit interrupter by the simulation arc signal, and its detection mode is by a feeler switch, and microprocessor starts the feedback self-detection circuit by software program emulation arcing fault signal.Based on said method, the circuit arc-detection when the utility model also can be implemented in loaded work piece, high efficiency.
Feeler switch is connected with microprocessor, when use in 0.5S continuously by 2 times or pin after the method that powers on again, start arc fault and report to the police, can realize when detect arc fault that by software program the red LED lamp of isolating switch is glimmered, isolating switch does not cut off the power supply.
In the utility model, described pilot lamp is located at the outside surface of arc-fault circuit interrupter, and its quantity is more than one.
The quantity of described pilot lamp is three, can distinguish by different colours, as: described three pilot lamp are respectively yellow LED lamp, red LED lamp, green LED lamp, in post production process of the present utility model, can be by the programming to microcontroller, realize the difference indication situation of LED lamp, as: when the load circuit non-fault, at this moment, green LED lamp flicker, yellow LED lamp and red LED lamp do not work, and electric current is greater than 2 ampere-hours in load circuit, and the flicker frequency of green LED lamp then is 2 times/S; When arc fault occurring, red LED lamp flicker 8 times, green LED lamp and yellow LED lamp do not work; When leak current fault occurring, yellow LED lamp flicker 8 times, green LED lamp and red LED lamp do not work.
The utility model compared with prior art has the following advantages and beneficial effect:
(1) the utility model adopts the design of pilot lamp, can the duty before the arc-fault circuit interrupter tripping operation be shown, during use, can effectively assist to find out the eliminating of line fault and potential faults, this design is compared with the branch state that closes of realizing arc-fault circuit interrupter (AFDD) by mechanical realization, structure is simpler, and with low cost, has marketable value.
(2) the utility model operation is very simple, after the circuit tripping operation, only needs to connect the power supply of arc-fault circuit interrupter, and pilot lamp namely can show the situation of last tripping operation then, assists searching of fault with this.
(3) the utility model is reasonable in design, adopts yellow LED lamp, red LED lamp, green LED lamp respectively as the indication of running status, arc fault, leak current fault, is arranged at the outside surface of arc fault detection device, shows fully aware of, eye-catching.
Description of drawings
Fig. 1 is the structural representation of arc-fault circuit interrupter described in the utility model.
Fig. 2 is electrical block diagram of the present utility model.
Wherein, 1-pilot lamp, 2-load circuit switch, 3-feeler switch.
Embodiment
Be described in further detail below in conjunction with the utility model of embodiment, but embodiment of the present utility model is not limited thereto.
Embodiment:
A kind of arc fault detection device with duty indication; comprise the arc-fault circuit interrupter of being located in the load circuit; arc-fault circuit interrupter is for being provided with the microprocessor circuit protection mechanism; on existing arc fault detection device; all the judgement of fault electric arc is not indicated; therefore, after tripping operation appears in arc-fault circuit interrupter, be that troubleshooting and hidden danger eliminating are made troubles toward the contact meeting.Based on above-mentioned situation, the utility model proposes a kind of design of pilot lamp, but the duty in reflected load loop, that is: normal operation, arc fault, three kinds of situations of leak current fault.Fig. 1 is the structural representation of arc-fault circuit interrupter, and as shown in Figure 1, pilot lamp 1 is located at the outside surface of arc-fault circuit interrupter.During use, if tripping operation appears in load circuit, at this moment, only need to connect the power supply of arc-fault circuit interrupter, by 1 situation that shows last tripping operation of the pilot lamp on the outside surface, assist searching of fault with this, structure is very simple, and with low cost, has marketable value.
Fig. 2 is electrical block diagram of the present utility model; as shown in Figure 2; above-mentioned pilot lamp 1 all is connected on the microprocessor; arc-fault circuit interrupter can be realized the power-off protection to load circuit; realize by the trip circuit that links to each other with microprocessor; in trip circuit, be provided with electrical apparatus release; as shown in Figure 2; electrical apparatus release is the control device of control load circuit switching 2; control by microprocessor can realize the disconnection to load circuit switch 2; but the generation of situations such as electric arc, electric leakage appears in holding circuit, stops circuit safety hidden danger.And in the utility model, the circuit structure that detects based on arc fault detection, leak current fault then can be summarized as follows:
(1) arc fault detection: comprise the arc detection circuitry that links to each other with microprocessor, as shown in Figure 2, arc detection circuitry mainly is made up of the flame current mutual inductor, signal voltage follower and the signal gain device A1 that link to each other successively, and wherein, the flame current mutual inductor is located in the load circuit; Described signal voltage follower then is connected with microprocessor by signal gain device A1.During use, the flame current mutual inductor converts detected arcing fault signal to current signal, and by signal voltage follower, signal gain device A1 current signal is passed in the microprocessor successively, wherein, signal gain device A1 has the effect that increases current signal.When transmitting, arcing fault signal, when connecting arc-fault circuit interrupter again, can be shown by pilot lamp 1 in microprocessor by memory storage.
(2) leak current fault detects: comprise the electric-leakage detection circuit that links to each other with microprocessor, as shown in Figure 2, mainly be made up of the leakage current transformer and the signal gain device A2 that link to each other successively that wherein, leakage current transformer is located in the load circuit; Signal gain device A2 then is connected with microprocessor, during use, leakage current transformer converts detected leak current fault signal to current signal, and by signal gain device A2 signal is amplified, be resent on the microprocessor, similar as above-mentioned arc fault detection, when transmitting, the leak current fault signal, when connecting arc-fault circuit interrupter again, can be shown by pilot lamp 1 in microprocessor by memory storage.
Detection based on above-mentioned two kinds of faults, the utility model can be by programming to realize the difference indication of pilot lamp 1 under the different operating state to microprocessor, in the utility model, pilot lamp 1 can adopt the LED lamp, and its quantity is three, in the actual fabrication process, can distinguish by different colours, as: above-mentioned three LED lamps adopt yellow LED lamp, red LED lamp, green LED lamp respectively.In post production process of the present utility model, can be by the programming to microcontroller, realize the difference indication situation of LED lamp, as: when the load circuit non-fault, at this moment, green LED lamp flicker, yellow LED lamp and red LED lamp do not work, and electric current is greater than 2 ampere-hours in load circuit, and the flicker frequency of green LED lamp then is 2 times/S; When arc fault occurring, red LED lamp flicker 8 times, green LED lamp and yellow LED lamp do not work; When leak current fault occurring, yellow LED lamp flicker 8 times, green LED lamp and red LED lamp do not work.
As shown in Figure 2, the utility model also is provided with the detection module of being made up of arc-detection IC and feeler switch 3 in arc-fault circuit interrupter, in the time of can being implemented in loaded work piece, detection to circuit electric arc/electric leakage, can effectively improve detection efficiency, as shown in Figure 2, arc-detection IC for respectively with the flame current mutual inductor, the signal voltage follower, the feedback self-detection circuit that microprocessor is connected, feeler switch 3 is then for starting simulation electric arc fault self-checking slowdown monitoring circuit and starting the control button that arc fault is reported to the police, and be connected with microprocessor, in the utility model, detection module can detect arc-fault circuit interrupter by simulation electric arc/electric leakage signal, its detection mode is by a feeler switch 3, and microprocessor starts the feedback self-detection circuit by software program emulation arcing fault signal, also can be achieved as follows operation: in 0.5 second, press feeler switch 3 continuously twice, can realize that pilot lamp 1 only warns, and not have control circuit in the trip circuit, that is: load circuit does not open circuit; Pin feeler switch 3 earlier, and then arc-fault circuit interrupter is powered on, can realize that equally pilot lamp 1 only warns, and not the opening circuit of load circuit.
The utility model is reasonable in design, adopts the design of pilot lamp 1, can the duty before the arc-fault circuit interrupter tripping operation be shown, use very convenient, can effectively assist to find out the eliminating of line fault and potential faults, have advantages such as with low cost, marketable value height.
The above; it only is preferred embodiment of the present utility model; be not that the utility model is done any pro forma restriction, every foundation technical spirit of the present utility model all falls within the protection domain of the present utility model any simple modification, equivalent variations that above embodiment does.
Claims (9)
1. one kind has the arc fault detection device that duty is indicated; comprise the arc-fault circuit interrupter of being located in the load circuit; described arc-fault circuit interrupter is for being provided with the microprocessor circuit protection mechanism; it is characterized in that: be provided with the pilot lamp (1) of indicating the load circuit duty at described arc-fault circuit interrupter, described pilot lamp (1) is connected with microprocessor.
2. a kind of arc fault detection device with duty indication according to claim 1, it is characterized in that: described arc-fault circuit interrupter comprises arc detection circuitry and the trip circuit that links to each other with microprocessor respectively, be provided with electrical apparatus release in described trip circuit, described electrical apparatus release is the control device of control load circuit switching (2); Described arc detection circuitry then is to link to each other with load circuit and detect the detection module of arc fault.
3. a kind of arc fault detection device with duty indication according to claim 2, it is characterized in that: described arc detection circuitry mainly is made up of the flame current mutual inductor, signal voltage follower and the signal gain device A1 that link to each other successively, described flame current mutual inductor is located in the load circuit, and described signal voltage follower then is connected with microprocessor by signal gain device A1.
4. a kind of arc fault detection device with duty indication according to claim 3, it is characterized in that: described arc-fault circuit interrupter also comprises the electric-leakage detection circuit that is connected on the microprocessor, and described electric-leakage detection circuit is the detection module of being located in the load circuit and detecting leak current fault.
5. a kind of arc fault detection device with duty indication according to claim 4, it is characterized in that: described electric-leakage detection circuit comprises leakage current transformer and the signal gain device A2 that links to each other successively, and described leakage current transformer is located in the load circuit; Described signal gain device A2 then is connected with microprocessor.
6. a kind of arc fault detection device with duty indication according to claim 5, it is characterized in that: in described arc-fault circuit interrupter, also be provided with arc-detection IC and feeler switch (3), the feedback self-detection circuit of described arc-detection IC for being connected with flame current mutual inductor, signal voltage follower, microprocessor respectively, described feeler switch (3) is then simulated electric arc fault self-checking slowdown monitoring circuit and is started the control button that arc fault is reported to the police for starting, and is connected with microprocessor.
7. according to each described a kind of arc fault detection device with duty indication of claim 1～6, it is characterized in that: described pilot lamp (1) is located at the outside surface of arc-fault circuit interrupter, and its quantity is more than one.
8. a kind of arc fault detection device with duty indication according to claim 7, it is characterized in that: the quantity of described pilot lamp (1) is three.
9. a kind of arc fault detection device with duty indication according to claim 8, it is characterized in that: described three pilot lamp (1) are respectively yellow LED lamp, red LED lamp, green LED lamp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320002404 CN203054158U (en) | 2013-01-05 | 2013-01-05 | Arc fault detecting device with working state indicating function |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320002404 CN203054158U (en) | 2013-01-05 | 2013-01-05 | Arc fault detecting device with working state indicating function |
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| CN203054158U true CN203054158U (en) | 2013-07-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201320002404 Expired - Fee Related CN203054158U (en) | 2013-01-05 | 2013-01-05 | Arc fault detecting device with working state indicating function |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103605043A (en) * | 2013-10-31 | 2014-02-26 | 国网宁夏电力公司盐池县供电公司 | Distribution-box fault indicator |
| CN105845514A (en) * | 2016-05-19 | 2016-08-10 | 上海电科电器科技有限公司 | Arc fault detection circuit breaker |
| CN106159884A (en) * | 2015-05-11 | 2016-11-23 | 施耐德电气美国股份有限公司 | Use arc fault and the earth fault interrupter of dual ADC |
| CN106199477A (en) * | 2016-07-01 | 2016-12-07 | 西安华为技术有限公司 | Noise generation circuit, self-checking circuit, AFCI and photovoltaic generating system |
| CN106298382A (en) * | 2016-11-01 | 2017-01-04 | 绵阳和瑞电子有限公司 | Chopper realizes arc fault warning and the changing method of arc fault power-off |
| CN107179499A (en) * | 2017-06-09 | 2017-09-19 | 艾迪迪电气（苏州）有限公司 | Detection sensor for miniature circuit breaker |
| CN108461361A (en) * | 2017-02-21 | 2018-08-28 | 北京维森科技有限公司 | Air switch and air switch control method |
| CN109713652A (en) * | 2019-01-16 | 2019-05-03 | 安徽升隆电气有限公司 | A kind of fault electric arc breaker |
| WO2019091410A1 (en) * | 2017-11-07 | 2019-05-16 | 施耐德电气工业公司 | Arc leakage protection device |
-
2013
- 2013-01-05 CN CN 201320002404 patent/CN203054158U/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103605043A (en) * | 2013-10-31 | 2014-02-26 | 国网宁夏电力公司盐池县供电公司 | Distribution-box fault indicator |
| CN106159884A (en) * | 2015-05-11 | 2016-11-23 | 施耐德电气美国股份有限公司 | Use arc fault and the earth fault interrupter of dual ADC |
| CN105845514A (en) * | 2016-05-19 | 2016-08-10 | 上海电科电器科技有限公司 | Arc fault detection circuit breaker |
| CN106199477A (en) * | 2016-07-01 | 2016-12-07 | 西安华为技术有限公司 | Noise generation circuit, self-checking circuit, AFCI and photovoltaic generating system |
| US10996284B2 (en) | 2016-07-01 | 2021-05-04 | Huawei Technologies Co., Ltd. | Noise generation circuit, self-checking circuit, AFCI, and photovoltaic power generation system |
| CN106298382A (en) * | 2016-11-01 | 2017-01-04 | 绵阳和瑞电子有限公司 | Chopper realizes arc fault warning and the changing method of arc fault power-off |
| CN108461361A (en) * | 2017-02-21 | 2018-08-28 | 北京维森科技有限公司 | Air switch and air switch control method |
| CN107179499A (en) * | 2017-06-09 | 2017-09-19 | 艾迪迪电气（苏州）有限公司 | Detection sensor for miniature circuit breaker |
| CN107179499B (en) * | 2017-06-09 | 2023-12-08 | 艾迪迪电气（苏州）有限公司 | Detection sensor for miniature circuit breaker |
| WO2019091410A1 (en) * | 2017-11-07 | 2019-05-16 | 施耐德电气工业公司 | Arc leakage protection device |
| GB2583200A (en) * | 2017-11-07 | 2020-10-21 | Schneider Electric Ind Sas | ARC leakage protection device |
| CN109713652A (en) * | 2019-01-16 | 2019-05-03 | 安徽升隆电气有限公司 | A kind of fault electric arc breaker |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130710 Termination date: 20210105 |