CN103036198A - Multi-functional safe electricity leakage protection device capable of preventing false wiring of power socket - Google Patents
Multi-functional safe electricity leakage protection device capable of preventing false wiring of power socket Download PDFInfo
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- CN103036198A CN103036198A CN2012105079383A CN201210507938A CN103036198A CN 103036198 A CN103036198 A CN 103036198A CN 2012105079383 A CN2012105079383 A CN 2012105079383A CN 201210507938 A CN201210507938 A CN 201210507938A CN 103036198 A CN103036198 A CN 103036198A
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Abstract
The invention relates to a multi-functional safe electricity leakage protection device capable of preventing false wiring of a power socket. The multi-functional safe electricity leakage protection device capable of preventing false wiring of a power socket comprises a outer shell, a phase-zero-ground dipolar copper plug, a zero sequence current mutual inductor arranged among zero lines, a zero sequence current mutual inductor arranged on a zero line, a test circuit, a free tripping relay K1, a silicon controlled rectifier, an after-current application-specific integrated circuit IC1, an after-current application-specific integrated circuit IC2, a ground line voltage detection comparator IC3 and a tripping driving protection circuit. When line connection of a power socket of a user does not meet the requirements of 'left zero right phase up ground', such as interchanging of the phase line and the zero line, or lacking of the ground line, or overlap connection of the phase line and the ground line, voltage of a machine casing can be beyond human body safe voltage of 36 V. Then an earth leakage protection device can achieve switching-off of the three phases and a user can be effectively protected.
Description
Technical field
The present invention relates to a kind of earth leakage protective device, especially a kind of earth leakage protective device of anti-supply socket false wiring.
Background technology
At present, the earth leakage protective device of selling on the market all requires the user when installing and using, and must guarantee that the supply socket wiring is correct and have the good ground wire of ground connection.In case user's supply socket wiring error, as phase, zero line exchange, the ground wire vacancy, or phase line is when existing unusual conditions such as overlapping phenomenon with ground wire, earth leakage protective device is failure to actuate, and does not have effective protective effect at all, causes personal injury to the user.
Summary of the invention
Deficiency for above existing earth leakage protective device; the purpose of this invention is to provide a kind of earth leakage protective device product; can there be electric leakage in this earth leakage protective device at institute's circuit closer product; and user's supply socket wiring does not meet " the left zero right ground of going up mutually " requirement; such as phase, zero line exchange, ground wire vacancy; or phase line and ground wire be when existing the overlap joint phenomenon, and earth leakage protective device can realize effectively that three utmost points disconnect, and play the effective protection to user's person.
The objective of the invention is by realizing by the following technical solutions:
The safe earth leakage protective device of multi-functional anti-supply socket false wiring; comprise crust of the device and phase, zero, two utmost point copper insert; be located at the zero sequence current mutual inductor between the phase zero line; zero sequence current mutual inductor on the ground wire, test loop, trip free device; controllable silicon; residual current detection application-specific integrated circuit (ASIC) IC1, IC2, ground wire voltage detection comparator IC3, and tripping relay Drive Protecting Circuit.When user's supply socket wiring does not meet " the left zero right ground of going up mutually " requirement; such as phase, zero line exchange, ground wire vacancy; or phase line and ground wire existence overlap joint phenomenon; when causing thus machine casing voltage to surpass human safety voltage 36V; earth leakage protective device can realize that three utmost points disconnect, and play the effective protection to user's person.
Described earth leakage protective device is correct in supply socket ground wire G wiring, but left side N port access phase line, the right L port connecting to neutral line N; Or supply socket ground wire vacancy, and left side N port access phase line, the right L port connecting to neutral line N; Or supply socket left side N port access phase line, the right L port earth connection G, and during ground wire G port access zero line; Although and the correct but ground wire of supply socket wiring and phase line exist when overlapping phenomenon; voltage on the Nin input of earth leakage protective device is that 220VAC(is equivalent to the voltage on the original Lin at this moment); Vcc1=18V, Vcc2=5.6V, earth leakage protective device can be worked.Earth leakage protective device detects this voltage by the dividing potential drop sampling circuit that GND systematically, components and parts D5, R19-R23 consist of; and be input to the 7th pin of comparator IC3; compare with IC3 the 6th pin reference voltage (R8, R9 dividing potential drop); when by Nin end and PEin terminal voltage 〉=36VAC; the 1st pin output high level signal of comparator IC3; trigger controllable silicon Q1 conducting through D1, cause tripping relay K1 to move and the disconnection of three utmost points, play the safeguard protection effect.
The invention has the beneficial effects as follows: when user's supply socket wiring does not meet " the left zero right ground of going up mutually " requirement; such as phase, zero line exchange, ground wire vacancy; or phase line and ground wire be when existing the overlap joint phenomenon, and earth leakage protective device can realize effectively that three utmost points disconnect, and play the effective protection to user's person.
Description of drawings
The invention will be further described below in conjunction with accompanying drawing and specific embodiment:
Fig. 1 is fundamental diagram of the present invention.
Embodiment
As shown in Figure 1; the safe earth leakage protective device of multi-functional anti-supply socket false wiring; comprise crust of the device and phase, zero, two utmost point copper insert, be located at the zero sequence current mutual inductor between the phase zero line, the zero sequence current mutual inductor on the ground wire; the test loop; trip free relay K1, controllable silicon, residual current detection application-specific integrated circuit (ASIC) IC1, IC2; ground wire voltage detection comparator IC3, and dropout Drive Protecting Circuit.When user's supply socket wiring does not meet " the left zero right ground of going up mutually " requirement; such as phase, zero line exchange, ground wire vacancy; or phase line and ground wire existence overlap joint phenomenon; when causing thus machine casing voltage to surpass human safety voltage 36V; earth leakage protective device can realize that three utmost points disconnect, and play the effective protection to user's person.When entirely true and ground connection is good when wiring; this earth leakage protective device also has following protected mode in addition: one, when L/N line residue leakage current greater than 3-5mA; or the ground wire leakage current is greater than 15-30mA, earth leakage protective device immediately phase, zero, three utmost points tripping operation safeguard protection.Two, when ground wire during to the earth abnormal voltage 〉=36V safe voltage, but the earth leakage protective device instantaneous trip, and three utmost points disconnect protection.
When user's supply socket ground wire G wiring correct, but left side N port access phase line, the right L port connecting to neutral line N; Or supply socket ground wire vacancy, and left side N port access phase line, the right L port connecting to neutral line N; Or supply socket left side N port access phase line, during the L port earth connection G of the right, and ground wire G port access zero line; Although and the correct but ground wire of supply socket wiring and phase line exist when overlapping phenomenon; voltage on the Nin input of earth leakage protective device is that 220VAC(is equivalent to the voltage on the original Lin at this moment); Vcc1=18V, Vcc2=5.6V, earth leakage protective device can be worked.Earth leakage protective device detects this voltage by the dividing potential drop sampling circuit that GND systematically, components and parts D5, R19-R23 consist of; and be input to the 7th pin of comparator IC3; compare with IC3 the 6th pin reference voltage (R8, R9 dividing potential drop); when by Nin end and PEin terminal voltage 〉=36VAC; the 1st pin output high level signal of comparator IC3; trigger controllable silicon Q1 conducting through D1, cause tripping relay K1 to move and the disconnection of three utmost points, play the safeguard protection effect.
When entirely true and ground connection is good when wiring; this earth leakage protective device also has following protected mode in addition: one, when remaining leakage current L/N line greater than 3-5mA; or the ground wire leakage current is greater than 15-30mA, earth leakage protective device immediately phase, zero, three utmost points tripping operation safeguard protection.Two, when ground wire during to the earth abnormal voltage 36V safe voltage, but the earth leakage protective device instantaneous trip, and three utmost points disconnect protection.
When entirely true and ground connection is good when wiring, if the L/N electric leakage occurs, the L/N residue leakage current that produces detects by instrument transformer L2, the electric current that detects detects through residual current detection application-specific integrated circuit (ASIC) IC2 to be judged, when L/N remains leakage current greater than 3-5mA, the high level of IC2 output triggers controllable silicon Q1 action through D3, makes tripping relay K1 action, and three utmost points disconnect.
When entirely true and ground connection was good when wiring, if the ground wire electric leakage occurs, this moment, ground wire PEin was charged.The ground wire leakage current that produces is pressed through residual current detection application-specific integrated circuit (ASIC) IC1 and is detected judgement, or the voltage on the PEin detects this voltage by the dividing potential drop sampling circuit that GND systematically, components and parts D5, R19-R23 consist of, and be input to the 7th pin of comparator IC3, compare and detect judgement with IC3 the 6th pin reference voltage (R8, R9 dividing potential drop).When IC1 detects the ground wire leakage current greater than 15-30mA, or IC3 detect the Nin end poor with the PEin terminal voltage 〉=during 36VAC, they are respectively through IC1 or IC3 output high level; trigger controllable silicon Q1 action through D2, D1; make tripping relay K1 action, three utmost points disconnect, and play the effect of duplicate protection.
This device possesses supply socket false wiring protection, leakage current test protection, ground wire electrical leakage voltage detection triple protection function, be mainly used in that electric heater (comprising quick electric water heater), burnt gas wall hanging furnace, gas heater etc. are had relatively high expectations to electrical security and there is the high risk occasion of water power insulating properties in product, such as the electric heater of electric heating tube heating, because of electric heating tube hidden danger of quality and electrothermal tube after long-term work because the reasons such as tube wall incrustation may breakage cause electric leakage dangerous; There was the possibility of electric leakage in water pump because wearing and tearing may cause the electric insulating quality variation after burnt gas wall hanging furnace moved under the environment of warm moist for a long time continuously.When electric leakage occured for this series products, the user was because health directly contacts with water, in the situation of safety precautions deficiency, will be fatal to user's life security.
Claims (1)
1. safe earth leakage protective device of multi-functional anti-supply socket false wiring, comprise crust of the device and phase, zero, two utmost point copper insert, be located at the zero sequence current mutual inductor between the phase zero line, zero sequence current mutual inductor on the ground wire, the test loop, the trip free device, controllable silicon, and dropout Drive Protecting Circuit; It is characterized in that: also comprise residual current detection application-specific integrated circuit (ASIC) IC1, IC2, ground wire voltage detection comparator IC3;
When earth leakage protective device energy normal power-up working condition, when supply socket ground wire G wiring correct, but left side N port access phase line, during the L port connecting to neutral line N of the right, voltage on the Nin input of earth leakage protective device is 220VAC, this moment Vcc1=18V, Vcc2=5.6V, earth leakage protective device can be worked; Earth leakage protective device detects this voltage by the dividing potential drop sampling circuit that GND systematically, components and parts D5, R19-R23 consist of, and be input to the 7th pin of comparator IC3, be that R8, R9 dividing potential drop are compared with IC3 the 6th pin reference voltage, when Nin end and PEin terminal voltage 〉=36VAC, the 1st pin output high level signal of comparator IC3, trigger controllable silicon Q1 conducting through D1, cause tripping relay K1 to move and the disconnection of three utmost points, play the safeguard protection effect;
When earth leakage protective device energy normal power-up working condition, when supply socket ground wire vacancy, and left side N port access phase line, during the L port connecting to neutral line N of the right, when earth leakage protective device institute connecting circuit product, voltage on the Nin input of earth leakage protective device is 220VAC, this moment Vcc1=18V, Vcc2=5.6V, earth leakage protective device can be worked, and earth leakage protective device passes through systematically GND, components and parts D5, the dividing potential drop sampling circuit that R19-R23 consists of detects this voltage, and is input to the 7th pin of comparator IC3, with IC3 the 6th pin reference voltage be R8, the R9 dividing potential drop is compared, when Nin end and PEin terminal voltage 〉=36VAC, the 1st pin output high level signal of comparator IC3 triggers controllable silicon Q1 conducting through D1, cause tripping relay K1 to move and the disconnection of three utmost points, play the safeguard protection effect;
When earth leakage protective device energy normal power-up working condition, when supply socket left side N port access phase line, during the L port earth connection G of supply socket the right, during ground wire G port access zero line, voltage on the Nin input of earth leakage protective device is 220VAC, this moment Vcc1=18V, Vcc2=5.6V, earth leakage protective device can be worked, earth leakage protective device passes through systematically GND, components and parts D5, the dividing potential drop sampling circuit that R19-R23 consists of detects this voltage, and be input to the 7th pin of comparator IC3, with IC3 the 6th pin reference voltage be R8, the R9 dividing potential drop is compared, when by Nin end and PEin terminal voltage 〉=36VAC, the 1st pin output high level signal of comparator IC3, trigger controllable silicon Q1 conducting through D1, cause tripping relay K1 to move and the disconnection of three utmost points, play the safeguard protection effect;
When the correct but ground wire of supply socket interface wiring and phase line exist when overlapping phenomenon, the PEin input is charged, this moment Vcc1=18V, Vcc2=5.6V, earth leakage protective device can be worked, earth leakage protective device passes through systematically GND, components and parts D5, the dividing potential drop sampling circuit that R19-R23 consists of detects this voltage, and be input to the 7th pin of comparator IC3, with IC3 the 6th pin reference voltage be R8, the R9 dividing potential drop is compared, when Nin end and PEin terminal voltage 〉=36VAC, the 1st pin output high level signal of comparator IC3 triggers controllable silicon Q1 conducting through D1, cause tripping relay K1 to move and the disconnection of three utmost points, play the safeguard protection effect;
When correct and ground connection is good when user's supply socket wiring, if the L/N electric leakage occurs, the L/N residue leakage current that produces detects by instrument transformer L2, the electric current that detects detects through residual current detection application-specific integrated circuit (ASIC) IC2 to be judged, when L/N remains leakage current greater than 3-5mA, the high level of IC2 output triggers controllable silicon Q1 action through D3, makes tripping relay K1 action, and three utmost points disconnect;
When user's supply socket wiring correct and ground wire grounded when normal; if the ground wire electric leakage occurs; this moment, ground wire PEin was charged; the ground wire drain voltage that produces thus detects through residual current detection application-specific integrated circuit (ASIC) IC1 to be judged; or the voltage on the PEin passes through systematically GND; components and parts D5; the dividing potential drop sampling circuit that R19-R23 consists of detects this voltage; and be input to the 7th pin of comparator IC3; with IC3 the 6th pin reference voltage be R8; the R9 dividing potential drop is compared and is detected judgement; when IC1 detects the ground wire leakage current greater than 15-30mA; or IC3 detect Nin end poor with the PEin terminal voltage 〉=during 36VAC; they are respectively through IC1 or IC3 output high level; through D2; D1 triggers controllable silicon Q1 action; make tripping relay K1 action, three utmost points disconnect, and play the effect of duplicate protection.
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| CN201210507938.3A CN103036198B (en) | 2012-12-03 | 2012-12-03 | Multi-functional anti-supply socket false wiring safe electricity leakage protection device |
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| CN201210507938.3A CN103036198B (en) | 2012-12-03 | 2012-12-03 | Multi-functional anti-supply socket false wiring safe electricity leakage protection device |
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| CN103036198A true CN103036198A (en) | 2013-04-10 |
| CN103036198B CN103036198B (en) | 2016-06-22 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105492911A (en) * | 2013-06-07 | 2016-04-13 | iEP2研究有限公司 | An electrical protection device and a method of providing electrical protection |
| CN106451329A (en) * | 2016-07-19 | 2017-02-22 | 中山市开普电器有限公司 | Leakage protection apparatus |
| CN106970288A (en) * | 2015-09-15 | 2017-07-21 | 三垦电气株式会社 | Earth detector |
| CN108933427A (en) * | 2017-05-27 | 2018-12-04 | 芜湖美的厨卫电器制造有限公司 | Electric heater and its protective device |
| CN109217235A (en) * | 2017-06-29 | 2019-01-15 | 芜湖美的厨卫电器制造有限公司 | Gas heater and its protective device |
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| CN201138737Y (en) * | 2008-01-04 | 2008-10-22 | 章祖德 | Multifunctional leakage protecting equipment preventing earth wire to be charged and alarming |
| CN201181835Y (en) * | 2008-06-13 | 2009-01-14 | 章祖德 | Multifunctional earth-leakage protective equipment |
| CN202957574U (en) * | 2012-12-03 | 2013-05-29 | 佛山市顺德区澳骏电子科技有限公司 | Multifunctional safety electric-leakage protection device in case of false wiring of power source socket |
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| CN201138737Y (en) * | 2008-01-04 | 2008-10-22 | 章祖德 | Multifunctional leakage protecting equipment preventing earth wire to be charged and alarming |
| CN201181835Y (en) * | 2008-06-13 | 2009-01-14 | 章祖德 | Multifunctional earth-leakage protective equipment |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105492911A (en) * | 2013-06-07 | 2016-04-13 | iEP2研究有限公司 | An electrical protection device and a method of providing electrical protection |
| CN105492911B (en) * | 2013-06-07 | 2019-02-26 | iEP2研究有限公司 | The method of electric protective device and offer electic protection |
| CN106970288A (en) * | 2015-09-15 | 2017-07-21 | 三垦电气株式会社 | Earth detector |
| CN106451329A (en) * | 2016-07-19 | 2017-02-22 | 中山市开普电器有限公司 | Leakage protection apparatus |
| CN106451329B (en) * | 2016-07-19 | 2019-04-05 | 中山市开普电器有限公司 | A kind of earth leakage protective device |
| CN108933427A (en) * | 2017-05-27 | 2018-12-04 | 芜湖美的厨卫电器制造有限公司 | Electric heater and its protective device |
| CN108933427B (en) * | 2017-05-27 | 2021-02-23 | 芜湖美的厨卫电器制造有限公司 | Electric water heater and protection device thereof |
| CN109217235A (en) * | 2017-06-29 | 2019-01-15 | 芜湖美的厨卫电器制造有限公司 | Gas heater and its protective device |
| CN109217236A (en) * | 2017-06-29 | 2019-01-15 | 芜湖美的厨卫电器制造有限公司 | Gas heater and its protective device |
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| CN103036198B (en) | 2016-06-22 |
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