CN203025274U - Arc fault protector detection device - Google Patents
Arc fault protector detection device Download PDFInfo
- Publication number
- CN203025274U CN203025274U CN 201220736676 CN201220736676U CN203025274U CN 203025274 U CN203025274 U CN 203025274U CN 201220736676 CN201220736676 CN 201220736676 CN 201220736676 U CN201220736676 U CN 201220736676U CN 203025274 U CN203025274 U CN 203025274U
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- electric arc
- module
- protection device
- arc fault
- arc
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Abstract
The utility model discloses an arc fault protector detection device comprising a simulated arc module, an output interface and a power supply module, wherein the simulated arc module is used for simulating a fault arc; the output interface is connected with the simulated arc module and is used for connecting an outer arc fault protector to be detected and transmitting a current signal simulated by the simulated arc module to the arc fault protector; and the power supply module is respectively connected with the simulated arc module and the output interface and is used for providing a power supply. With the adoption of the arc fault protector detection device with the structure disclosed by the utility model, the fault arc is simulated through the simulated arc module and then the outer arc fault protector to be detected is connected through the output interface; and the current signal simulated by the simulated arc module is transmitted to the arc fault protector to judge whether the arc fault protector works normally or not so as to detect whether the 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 to cross over the continuous discharge phenomenon of 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 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 (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 is heated for a long time due to insulator or the contingency electric spark occurs, and causes the insulating surface carbonization and forms arc channel; The latter is because electric conductor is run into ground conduit, or in a branch of conductor, part is hurt insulation by sharp-pointed metallic object.In the low pressure power and distribution supply cable, series arc faults, Line To Line arc fault and line arc fault is over the ground 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 is connected with signal gathering unit, be used for to receive the signal that signal gathering unit collects, and judge whether have fault electric arc in circuit, and according to judged result control electrical apparatus release disconnecting circuit whether; Described microprocessor unit has the arc fault detection module; The electrical apparatus release unit is connected 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 easily appears, 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, 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 is connected 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 is connected 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 by sending the single-chip microcomputer of two groups of triode groups output simulation electric arcs of pulse train control.
Described every group of triode group also comprises a LED lamp.
Described simulation electric arc module also comprises sample circuit, is connected 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 schematic diagram of two groups of triode groups in 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 is connected 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 is connected 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, export 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, is connected 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 in 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, the fault electric arc protector is failure to actuate.
Sample circuit gathers the current signal in circuit, sends in single-chip microcomputer the 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 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, then becomes high level by low level.The fault electric arc waveform of output interface output simulation this moment, red LED lamp is bright, two probes of output interface is 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, two probes of output interface are placed in the sampling resistor two ends of the fault electric arc protector that is verified when green LED lamp is bright, then press switching push button, green LED lamp is extinguished, red LED lamp lights, and the action of simultaneous faults arc protector shows that this fault electric arc protector is normal; If the fault electric arc protector is failure to actuate, show that this fault electric arc protector breaks down, and can't normally use.
The above is only the preferred embodiment 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 is connected 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 is connected 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 by sending the single-chip microcomputer of two groups of triode groups output simulation electric arcs of pulse train control.
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, is connected 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 |
|---|---|---|---|
| CN 201220736676 CN203025274U (en) | 2012-12-27 | 2012-12-27 | Arc fault protector detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220736676 CN203025274U (en) | 2012-12-27 | 2012-12-27 | Arc fault protector detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203025274U true CN203025274U (en) | 2013-06-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220736676 Expired - Fee Related CN203025274U (en) | 2012-12-27 | 2012-12-27 | Arc fault protector detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203025274U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102998573A (en) * | 2012-12-27 | 2013-03-27 | 天津市鸿远电气设备有限公司 | Electric arc fault protector inspection device |
| CN104242263A (en) * | 2014-08-29 | 2014-12-24 | 天津市鸿远电气股份有限公司 | Breaker with fault arc protecting and alarming functions |
-
2012
- 2012-12-27 CN CN 201220736676 patent/CN203025274U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102998573A (en) * | 2012-12-27 | 2013-03-27 | 天津市鸿远电气设备有限公司 | Electric arc fault protector inspection device |
| CN102998573B (en) * | 2012-12-27 | 2016-05-04 | 天津市鸿远电气设备有限公司 | Electric arc fault protection device verifying attachment |
| CN104242263A (en) * | 2014-08-29 | 2014-12-24 | 天津市鸿远电气股份有限公司 | Breaker with fault arc protecting and alarming functions |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: TIANJING HONGYUAN ELECTRIC CORP., LTD. Free format text: FORMER NAME: TIANJIN HONGYUAN ELECTRICAL EQUIPMENT CO., LTD. |
|
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 300000, Tianjin, Jinnan District, eight Li Tai Taida (Jinnan) Microelectronics Industrial Zone, Keda Road, No. 9-1012 Patentee after: TIANJIN HONGYUAN ELECTRIC CO., LTD. Address before: 300350, Tianjin, Jinnan District, eight Li Tai Taida (Jinnan) Microelectronics Industrial Zone, Keda Road, No. 9-1012 Patentee before: Tianjin Hongyuan Electrical Equipment Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130626 Termination date: 20151227 |
|
| EXPY | Termination of patent right or utility model |