CN204067750U - A kind of leakage protecting plug - Google Patents
A kind of leakage protecting plug Download PDFInfo
- Publication number
- CN204067750U CN204067750U CN201420534381.7U CN201420534381U CN204067750U CN 204067750 U CN204067750 U CN 204067750U CN 201420534381 U CN201420534381 U CN 201420534381U CN 204067750 U CN204067750 U CN 204067750U
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- China
- Prior art keywords
- ground wire
- detection circuit
- leakage
- resistance
- circuit
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Abstract
The utility model discloses a kind of leakage protecting plug, comprise header body, main circuit board is provided with in described header body, described main circuit board comprises rectification circuit and leakage protection circuit, described leakage protection circuit comprises zero sequence current mutual inductor, first one-way SCR and amplifying circuit, described main circuit board comprises ground wire electric-leakage detection circuit, ground wire electrified detection circuit and ground wire grounded state detection circuit, the output of described ground wire electrified detection circuit is connected with zero line and ground wire respectively, described ground wire grounded state detection circuit is connected with live wire and described ground wire respectively, described ground wire electric-leakage detection circuit is connected with power input and earth terminal respectively.The utility model can detect live wire electric leakage by the electric-leakage detection circuit be arranged on main circuit board; ground wire leaks electricity, and detects ground wire electrification, detects ground connection abnormal; and then ground wire electrification or the ground wire accident caused of leaking electricity that avoids occurs, and improves the fail safe that three poles disconnect leakage protecting plugs.
Description
Technical field
The utility model relates to a kind of electric protective device, refers more particularly to a kind of three poles and disconnects leakage protecting plug.
Background technology
Existing leakage protecting plug, does not generally have special in ground wire earth leakage protective, the device that ground wire electrified detection is reported to the police and imperfect earth is reported to the police.Like this can not just warning before ground wire leakage current does not produce, can not the anticreep performance of general warranty plug.Ground wire electrification or ground connection lack monitoring extremely, and cause under ground wire causes drain conditions extremely, the anticreep performance of plug exists major defect.
Utility model content
It is simple that the purpose of this utility model is just to provide a kind of structure to solve the problem, practical and convenient leakage protecting plug.
The utility model is achieved through the following technical solutions above-mentioned purpose:
The utility model comprises header body, main circuit board is provided with in described header body, described main circuit board comprises rectification circuit and leakage protection circuit, described leakage protection circuit comprises zero sequence current mutual inductor, first one-way SCR and amplifying circuit, described main circuit board also comprises live wire electric-leakage detection circuit, ground wire electric-leakage detection circuit, ground wire electrified detection circuit and ground wire grounded state detection circuit, the output of described ground wire electrified detection circuit is connected with zero line and ground wire respectively, described ground wire grounded state detection circuit is connected with live wire and described ground wire respectively, described ground wire electric-leakage detection circuit is connected with power input and earth terminal respectively.
Particularly, described ground wire electric-leakage detection circuit comprises the 7th electric capacity, the 8th electric capacity, the second controllable silicon, the 6th diode and the 5th electric capacity.
Further, described ground wire electrified detection circuit comprises the 7th diode, the 7th resistance, the 8th resistance, the 9th resistance, the second light-emitting diode and the 3rd triode.
Particularly, described ground wire grounded state detection circuit comprises optocoupler, the 4th triode, the 5th triode, the 12 resistance, the 13 resistance, the 14 resistance, the 15 resistance and the 16 resistance.
The beneficial effects of the utility model are:
The utility model can detect live wire electric leakage by the electric-leakage detection circuit be arranged on main circuit board; ground wire leaks electricity, and detects ground wire electrification, detects ground connection abnormal; and then ground wire electrification or the ground wire accident caused of leaking electricity that avoids occurs, and improves the fail safe that three poles disconnect leakage protecting plugs.
Accompanying drawing explanation
Fig. 1 is main circuit board schematic diagram of the present utility model;
Fig. 2 is structural representation of the present utility model;
Fig. 3 is structural representation of the present utility model;
Fig. 4 is structural representation of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail:
As shown in Figure 1, the utility model comprises header body, main circuit board is provided with in described header body, described main circuit board comprises rectification circuit and leakage protection circuit, described leakage protection circuit comprises zero sequence current mutual inductor, first one-way SCR and amplifying circuit, on the phase line that described zero sequence current mutual inductor is sleeved on power circuit and the neutral line, the output of described zero sequence current mutual inductor is connected with the input of described amplifying circuit, the output of described amplifying circuit is connected with the control pole of the first one-way SCR, the anode of described first one-way SCR is connected with the both positive and negative polarity of the power circuit after rectification with negative electrode is corresponding respectively, described main circuit board also comprises ground wire electric-leakage detection circuit, ground wire electrified detection circuit and ground wire grounded state detection circuit, the output of described ground wire electrified detection circuit is connected with zero line and ground wire respectively, described ground wire grounded state detection circuit is connected with live wire and described ground wire respectively, described ground wire electric-leakage detection circuit is connected with power input and earth terminal respectively.
As shown in Figure 2, described ground wire electric-leakage detection circuit comprises zero sequence current mutual inductor B, the 5th resistance, the 6th resistance, the 7th electric capacity, the 8th electric capacity, the second controllable silicon, the 6th voltage stabilizing didoe and the 5th diode, if ground wire electric leakage, then and can automatic trip.When ground wire has leakage current to flow through, zero sequence current mutual inductor B will sense small and weak electric current, with the one end through the 5th resistance step-down, the 6th voltage-stabiliser tube voltage stabilizing, the 6th resistance current limliting link zero sequence current mutual inductor B, the zero sequence current mutual inductor B other end links the second SCR control pole, trigger the second controlled silicon conducting, the second controllable silicon anode and negative electrode are linked on the circuit both positive and negative polarity after rectification respectively.
As shown in Figure 3, described ground wire electrified detection circuit comprises the 7th diode, the 7th resistance, the 8th resistance, the 9th resistance, the second light-emitting diode and the 3rd triode, if ground wire electrification.Then light-emitting diode can light.If ground wire is not charged, light-emitting diode can not be bright.When ground wire is not charged, power circuit can not work due to phase shortage electricity, and the second light-emitting diode does not work; When after ground wire electrification, flow through the 7th rectifier diode, trigger the 3rd transistor base through the 8th resistance current limliting, make the 3rd transistor collector and emitter conducting, circuit working, the second light-emitting diode lights.
As shown in Figure 4, described ground wire grounded state detection circuit comprises the first optocoupler, the 4th triode, the 5th triode, the tenth resistance, the 11 resistance, the 12 resistance, the 13 resistance, the 14 resistance, the 15 resistance, the 16 resistance, the 3rd light-emitting diode, if ground connection normally would not light the 3rd light-emitting diode, if do not have ground connection will light the 3rd light-emitting diode.When normally ground wire grounded, one end of tenth resistance is connected with the output phase line of power circuit, the other end of the tenth resistance is connected with the first pin of the first optocoupler, the output ground wire of the crus secunda link power supply circuit of optocoupler, when the first optocoupler obtains electric work, the output conducting of the first optocoupler, one end link rectifier power source positive pole of the 11 resistance, the other end of the 11 resistance links the first optocoupler four pin, after first optocoupler conducting, the base stage of the 4th triode obtains electric, 4th triode starts ON operation, the positive pole of one end link rectification circuit of the 14 resistance, link the 15 resistance one end, one end of 14 resistance, the other end of the 15 resistance links the 4th transistor collector and the 5th triode base electrode respectively, because the 4th triode normally works, make the voltage of the 15 resistance link the 5th triode base electrode low, 5th triode quits work, the 3rd light-emitting diode be then connected on the 5th triode can not be shinny, when ground wire does not have ground connection, the output phase line of the tenth resistance one end link power supply circuit, one end of tenth resistance links a pin of the first optocoupler, the output ground wire of two pin link power supply circuit of the first optocoupler, when ground wire does not have ground connection, first optocoupler does not work, the output of the first optocoupler can not conducting, otherwise, 4th transistor base triggerless voltage, then the 4th triode can not work, the positive pole of one end link rectification circuit of the 14 resistance, link the 15 resistance one end, one end of 14 resistance, 15 resistance other end link the 4th transistor collector and the 5th triode base electrode, because the 4th triode has not worked, the voltage of the 15 resistance link the 5th triode base electrode is enable to trigger the 5th triode operation, 13 resistance one end link rectification positive pole, other end link the 3rd light-emitting diode, 3rd light-emitting diode one end link the 5th transistor collector, on five transistor collector emitter link rectification circuit negative poles, 5th triode operation conducting, 3rd LED operation is lighted.
These are only preferred embodiment of the present utility model, not in order to limit the utility model, all do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included in protection range of the present utility model.
Claims (4)
1. a leakage protecting plug, comprise header body, main circuit board is provided with in described header body, described main circuit board comprises rectification circuit and leakage protection circuit, described leakage protection circuit comprises zero sequence current mutual inductor, first one-way SCR and amplifying circuit, it is characterized in that: described main circuit board also comprises ground wire electric-leakage detection circuit, ground wire electrified detection circuit and ground wire grounded state detection circuit, the output of described ground wire electrified detection circuit is connected with zero line and ground wire respectively, described ground wire grounded state detection circuit is connected with live wire and described ground wire respectively, described ground wire electric-leakage detection circuit is connected with power input and earth terminal respectively.
2. a kind of leakage protecting plug according to claim 1, is characterized in that: described ground wire electric-leakage detection circuit comprises the 7th electric capacity, the 8th electric capacity, the second controllable silicon, the 6th diode and the 5th electric capacity.
3. a kind of leakage protecting plug according to claim 1, is characterized in that: described ground wire electrified detection circuit comprises the 7th diode, the 7th resistance, the 8th resistance, the 9th resistance, the second light-emitting diode and the 3rd triode.
4. a kind of leakage protecting plug according to claim 1, is characterized in that: described ground wire grounded state detection circuit comprises optocoupler, the 4th triode, the 5th triode, the 12 resistance, the 13 resistance, the 14 resistance, the 15 resistance and the 16 resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420534381.7U CN204067750U (en) | 2014-09-18 | 2014-09-18 | A kind of leakage protecting plug |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420534381.7U CN204067750U (en) | 2014-09-18 | 2014-09-18 | A kind of leakage protecting plug |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204067750U true CN204067750U (en) | 2014-12-31 |
Family
ID=52209199
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420534381.7U Expired - Fee Related CN204067750U (en) | 2014-09-18 | 2014-09-18 | A kind of leakage protecting plug |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204067750U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104466555A (en) * | 2015-01-01 | 2015-03-25 | 唐相成 | Ground protection indicator |
| CN110768208A (en) * | 2019-11-25 | 2020-02-07 | 刘月星 | Leakage protection device |
| CN112436483A (en) * | 2020-11-06 | 2021-03-02 | 江西百盈高新技术股份有限公司 | Leakage protection circuit |
-
2014
- 2014-09-18 CN CN201420534381.7U patent/CN204067750U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104466555A (en) * | 2015-01-01 | 2015-03-25 | 唐相成 | Ground protection indicator |
| CN110768208A (en) * | 2019-11-25 | 2020-02-07 | 刘月星 | Leakage protection device |
| CN112436483A (en) * | 2020-11-06 | 2021-03-02 | 江西百盈高新技术股份有限公司 | Leakage protection circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141231 Termination date: 20150918 |
|
| EXPY | Termination of patent right or utility model |