CN102998573A - Electric arc fault protector inspection device - Google Patents
Electric arc fault protector inspection device Download PDFInfo
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- CN102998573A CN102998573A CN2012105832363A CN201210583236A CN102998573A CN 102998573 A CN102998573 A CN 102998573A CN 2012105832363 A CN2012105832363 A CN 2012105832363A CN 201210583236 A CN201210583236 A CN 201210583236A CN 102998573 A CN102998573 A CN 102998573A
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- electric arc
- arc fault
- protection device
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- fault protection
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- Testing Electric Properties And Detecting Electric Faults (AREA)
Abstract
The invention discloses an electric arc fault protector inspection device. The electric arc fault protector inspection device comprises an electric arc simulating module for simulating a fault electric arc; an output interface which is connected with the electric arc simulating module and used for connecting an external electric arc fault protector to be detected, and transmits an electric current signal simulated by the electric arc simulating module to the electric arc fault protector; and a power source module which is respectively connected with the electric arc simulating module and the output interface, and used for supplying power. The electric arc fault protector inspection device adopting the structure simulates the fault electric arc through the electric arc simulating module, and then is connected with the external electric arc fault protector to be detected through the output interface, and furthermore transmits the electric current signal simulated by the electric arc simulating module to the electric arc fault protector, so that the electric arc fault protector inspection device can judge whether the electric arc fault protector functions normally or not, and thereby inspecting whether the electric arc fault protector can be used normally or not.
Description
Technical field
The present invention relates to electronics, electric equipment safeguard protection field, especially a kind of electric arc fault protection apparatus.
Background technology
Along with the develop rapidly of economy and the raising of people's lives, power consumption is also in continuous increase.Electrical Safety comprises personal safety and prevents from leaking electricity or fire that arc fault causes, day by day is subject to people and payes attention to.The fire that arc fault causes accounts for more than 60% in all electrical fires, so people improve gradually to the attention degree of low-voltage electrical safety and electric arc fault protection.
Electric arc is the continuous discharge phenomenon of crossing over certain insulating medium between two electrodes, often is accompanied by the part volatilization of electrode.Typical electric arc is to form in the airspace between yin, yang the two poles of the earth.Arc center's temperature is generally 5000 to 15000 degrees centigrade.The zone that electric arc exists can produce very high ionization air pressure, and what cause that electric arc limited to all can discharge hot gas and electrode substance particle Anywhere.
Electric arc on the circuit can be divided into two kinds, and a kind of is normal operation arc, claims that " good arc " another kind is fault electric arc, claims " bad arc "." good arc " refers to the arc that motor rotation (such as electric drill, suction cleaner etc.) produces, and when people's device for switching, the arc that produces during plugging electric also belongs to " good arc " in addition." bad arc " is fault electric arc, and fault electric arc generally results from two kinds of situations: 1. along insulator part conductive surface; 2. result from two electrodes that approach very much.The former causes the insulating surface carbonization and forms arc channel because insulator is heated for a long time or the contingency electric spark occurs; The latter is because electric conductor is run into ground conduit, or part is hurt insulation by sharp-pointed metallic object in a branch of conductor.In the low pressure power and distribution supply cable, over the ground arc fault of series arc faults, Line To Line arc fault and line is arranged.
Traditional electric arc fault protection device generally includes signal gathering unit, microprocessor unit, electrical apparatus release unit and power circuit unit; Wherein, signal gathering unit is for the current signal that gathers electric circuit; Microprocessor unit links to each other with signal gathering unit, be used for to receive the signal that signal gathering unit collects, and judges whether have fault electric arc in the circuit, and controls whether disconnecting circuit of electrical apparatus release according to judged result; Described microprocessor unit has the arc fault detection module; The electrical apparatus release unit links to each other with microprocessor, is used for disconnecting circuit when arc fault occurs electric circuit, thereby plays the effect of holding circuit; The power circuit unit is used to signal gathering unit, microprocessor unit and electrical apparatus release unit that power supply is provided.
Yet, if the electric arc fault protection device itself exists defective, erroneous judgement in use appears easily, normal operation arc is judged as fault electric arc, the easily normal productive life running of impact; If fault electric arc is judged as normal operation arc, then very easy accidents caused, cause casualties difficult to the appraisal or property loss.
Summary of the invention
The technical problem to be solved in the present invention is to overcome defective of the prior art, and providing a kind of can test to the electric arc fault protection device, in use whether has the electric arc fault protection device verifying attachment of erroneous judgement to determine it.
For addressing the above problem, a kind of electric arc fault protection device verifying attachment of the present invention comprises:
Simulation electric arc module is used for simulated failure electric arc;
Output interface links to each other with simulation electric arc module, is used for connecting outside electric arc fault protection device to be detected, and will simulate the current signal that the electric arc module simulates and be passed to this electric arc fault protection device;
Power module links to each other with simulation electric arc module and output interface respectively, is used for providing power supply.
Described simulation electric arc module comprises two groups of triode groups, every group of triode and resistance that includes two reverse parallel connections; And comprise the single-chip microcomputer of controlling two groups of triode groups output simulation electric arcs by sending pulse train.
Described every group of triode group also comprises a LED lamp.
Described simulation electric arc module also comprises sample circuit, links to each other with single-chip microcomputer, is used for gathering the current signal of output interface end and being sent to single-chip microcomputer, is used for producing corresponding pulse train for single-chip microcomputer.
Described sample circuit comprises current transformer and signal conditioning circuit.
Described power module comprises transformer and power circuit; This power circuit comprises not control rectifying circuit and voltage transitions chip, is used for to single-chip microcomputer and sample circuit power supply.
Described output interface comprises two probes.
Adopt the electric arc fault protection device verifying attachment of structure of the present invention; by simulation electric arc module simulation fault electric arc; connect electric arc fault protection device outside to be detected through output interface again; and will simulate the current signal that the electric arc module simulates and be passed to this electric arc fault protection device; judging whether the electric arc fault protection device works, thereby whether check electric arc fault protection device can normally use.
Description of drawings
Fig. 1 is the structured flowchart of electric arc fault protection device verifying attachment of the present invention.
Fig. 2 is the synoptic diagram of two groups of triode groups in the electric arc fault protection device verifying attachment of the present invention.
Embodiment
In order to make those skilled in the art person understand better technical solution of the present invention, the present invention is described in further detail below in conjunction with drawings and embodiments.
As shown in Figure 1, electric arc fault protection device verifying attachment of the present invention comprises simulation electric arc module, output interface and power module.
Wherein simulate the electric arc module and be used for simulated failure electric arc; Output interface links to each other with simulation electric arc module, is used for connecting outside electric arc fault protection device to be detected, and will simulate the current signal that the electric arc module simulates and be passed to this electric arc fault protection device; Power module links to each other with simulation electric arc module and output interface respectively, is used for providing power supply.
Described simulation electric arc module comprises two groups of NPN triode groups and single-chip microcomputer.
Wherein, every group of triode group includes the triode of two reverse parallel connections, a resistance and a LED lamp.
Two resistance differences in two groups of triode groups are in the resistance line attachment of different resistances, so that the output voltage values of output interface is different.Two groups of triode groups are switched the duty of this verifying attachment by receiving the different pulse train of single-chip microcomputer.The duty of this verifying attachment comprises two kinds of normal condition and test status, and wherein the waveform of simulation electric arc module output simulated failure electric arc during test status is exported normal waveform during normal condition.
The color of two LED lamps is different, can be respectively red and green, and the lamp of different colours lights this verifying attachment of expression and is in different duties.
Described simulation electric arc module also comprises sample circuit, links to each other with single-chip microcomputer, is used for gathering the current signal of output interface end and being sent to single-chip microcomputer, is used for producing corresponding pulse train for single-chip microcomputer.
Described sample circuit comprises current transformer and signal conditioning circuit, and the current signal that current transformer gathers is sent into the I/O interface of single-chip microcomputer through signal conditioning circuit.
Described power module comprises transformer and power circuit; This power circuit comprises not control rectifying circuit and voltage transitions chip, is used for to single-chip microcomputer and sample circuit power supply.Wherein control rectifying circuit is not converted to direct current with the alternating current of Circuit Fault on Secondary Transformer, and the voltage transitions chip is converted to the 3.3V power supply with this direct current, is the power supply of single-chip microcomputer and sample circuit.
Described output interface comprises two probes, during use two probes is placed the sampling resistor two ends of external arc-fault circuit interrupter to be measured, for it provides the line signal of simulation.
Fault electric arc protector verifying attachment of the present invention; in use; when this verifying attachment of needs was operated in normal condition, single-chip microcomputer provided high level for the triode of two reverse parallel connections in first group of triode group, for the triode in second group of triode group provides low level.The triode of two reverse parallel connections in first group of triode group forms the simple alternating current electric pathway; joint output this moment sinusoidal voltage; green LED lamp in first group of triode group is bright; two probes of output interface are put on the sampling resistor two ends of fault electric arc protector, and the fault electric arc protector is failure to actuate.
Sample circuit gathers the current signal in the circuit, sends in the single-chip microcomputer moment of the each zero passage of single-chip microcomputer record current.
When this verifying attachment of needs enters detected state, press the switching push button on the single-chip microcomputer, after single-chip microcomputer receives switching signal, the two-way high level signal that offers first group of triode group is become low level, wherein one tunnel low level that offers second group of triode group is become high level, another road is low level when the each zero passage of line current, postpones a period of time, becomes high level by low level again.The fault electric arc waveform of output interface output simulation this moment, red LED lamp is bright, and two probes of output interface are put on the sampling resistor two ends of fault electric arc protector, the action of fault electric arc protector.
If want to switch back normal condition by detected state, again press switching push button, red LED lamp is extinguished, and green LED lamp lights, and shows handover success.This moment, output interface was exported sinusoidal voltage again.
During use, when green LED lamp is bright, two probes of output interface are placed the sampling resistor two ends of the fault electric arc protector that is verified, then press switching push button, green LED lamp is extinguished, red LED lamp lights, and the action of simultaneous faults arc protector shows that then this fault electric arc protector is normal; If the fault electric arc protector is failure to actuate, show that then this fault electric arc protector breaks down, and can't normally use.
The above only is preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (7)
1. an electric arc fault protection device verifying attachment is characterized in that, comprising:
Simulation electric arc module is used for simulated failure electric arc;
Output interface links to each other with simulation electric arc module, is used for connecting outside electric arc fault protection device to be detected, and will simulate the current signal that the electric arc module simulates and be passed to this electric arc fault protection device;
Power module links to each other with simulation electric arc module and output interface respectively, is used for providing power supply.
2. electric arc fault protection device verifying attachment as claimed in claim 1 is characterized in that, described simulation electric arc module comprises two groups of triode groups, and every group of triode group includes triode and resistance of two reverse parallel connections;
And comprise the single-chip microcomputer of controlling two groups of triode groups output simulation electric arcs by sending pulse train.
3. electric arc fault protection device verifying attachment as claimed in claim 2 is characterized in that, described every group of triode group also comprises a LED lamp.
4. electric arc fault protection device verifying attachment as claimed in claim 2 or claim 3; it is characterized in that described simulation electric arc module also comprises sample circuit, links to each other with single-chip microcomputer; be used for gathering the current signal of output interface end and being sent to single-chip microcomputer, be used for producing corresponding pulse train for single-chip microcomputer.
5. electric arc fault protection device verifying attachment as claimed in claim 4 is characterized in that described sample circuit comprises current transformer and signal conditioning circuit.
6. electric arc fault protection device verifying attachment as claimed in claim 4 is characterized in that described power module comprises transformer and power circuit; This power circuit comprises not control rectifying circuit and voltage transitions chip, is used for to single-chip microcomputer and sample circuit power supply.
7. electric arc fault protection device verifying attachment as claimed in claim 1 is characterized in that, described output interface comprises two probes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210583236.3A CN102998573B (en) | 2012-12-27 | 2012-12-27 | Electric arc fault protection device verifying attachment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210583236.3A CN102998573B (en) | 2012-12-27 | 2012-12-27 | Electric arc fault protection device verifying attachment |
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| Publication Number | Publication Date |
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| CN102998573A true CN102998573A (en) | 2013-03-27 |
| CN102998573B CN102998573B (en) | 2016-05-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210583236.3A Expired - Fee Related CN102998573B (en) | 2012-12-27 | 2012-12-27 | Electric arc fault protection device verifying attachment |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104090231A (en) * | 2014-07-02 | 2014-10-08 | 珠海格力电器股份有限公司 | Device and method for detecting arc-fault circuit interrupter |
| CN106940410A (en) * | 2017-05-18 | 2017-07-11 | 艾迪迪电气（苏州）有限公司 | Arc fault protector oscillating arc testboard |
| CN107144747A (en) * | 2017-05-18 | 2017-09-08 | 艾迪迪电气（苏州）有限公司 | Arc fault protector combined test stand |
| 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 |
| CN107290661A (en) * | 2017-08-21 | 2017-10-24 | 优利德科技(中国)有限公司 | A kind of arc fault breaker detection means and its detection method |
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| CN101114768A (en) * | 2006-07-27 | 2008-01-30 | 刘浩铭 | Method for performing malfunction arc self-examination by analogue signal produced from microprocessor |
| US7333920B2 (en) * | 2002-10-03 | 2008-02-19 | Leviton Manufacturing Co., Inc. | Arc fault detector with circuit interrupter |
| CN102611069A (en) * | 2012-04-18 | 2012-07-25 | 天津市鸿远电气设备有限公司 | Electric arc fault protector |
| CN203025274U (en) * | 2012-12-27 | 2013-06-26 | 天津市鸿远电气设备有限公司 | Arc fault protector detection device |
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2012
- 2012-12-27 CN CN201210583236.3A patent/CN102998573B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US7333920B2 (en) * | 2002-10-03 | 2008-02-19 | Leviton Manufacturing Co., Inc. | Arc fault detector with circuit interrupter |
| CN1725589A (en) * | 2005-07-15 | 2006-01-25 | 蒋闯 | Flashover leakage protector and protection method thereof |
| CN101114768A (en) * | 2006-07-27 | 2008-01-30 | 刘浩铭 | Method for performing malfunction arc self-examination by analogue signal produced from microprocessor |
| CN102611069A (en) * | 2012-04-18 | 2012-07-25 | 天津市鸿远电气设备有限公司 | Electric arc fault protector |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104090231A (en) * | 2014-07-02 | 2014-10-08 | 珠海格力电器股份有限公司 | Device and method for detecting arc-fault circuit interrupter |
| CN106940410A (en) * | 2017-05-18 | 2017-07-11 | 艾迪迪电气（苏州）有限公司 | Arc fault protector oscillating arc testboard |
| CN107144747A (en) * | 2017-05-18 | 2017-09-08 | 艾迪迪电气（苏州）有限公司 | Arc fault protector combined test stand |
| CN106940410B (en) * | 2017-05-18 | 2020-08-21 | 艾迪迪电气（苏州）有限公司 | Arc fault protector vibration arc test bench |
| CN107144747B (en) * | 2017-05-18 | 2020-08-21 | 艾迪迪电气（苏州）有限公司 | Comprehensive test bench for arc fault protector |
| 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 |
| CN107290661A (en) * | 2017-08-21 | 2017-10-24 | 优利德科技(中国)有限公司 | A kind of arc fault breaker detection means and its detection method |
| CN107290661B (en) * | 2017-08-21 | 2019-08-06 | 优利德科技(中国)股份有限公司 | A kind of arc fault breaker detection device and its detection method |
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| Publication number | Publication date |
|---|---|
| CN102998573B (en) | 2016-05-04 |
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Granted publication date: 20160504 Termination date: 20201227 |