KR20160027887A - The device that absorb leak electric current - Google Patents
The device that absorb leak electric current Download PDFInfo
- Publication number
- KR20160027887A KR20160027887A KR1020150054647A KR20150054647A KR20160027887A KR 20160027887 A KR20160027887 A KR 20160027887A KR 1020150054647 A KR1020150054647 A KR 1020150054647A KR 20150054647 A KR20150054647 A KR 20150054647A KR 20160027887 A KR20160027887 A KR 20160027887A
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- KR
- South Korea
- Prior art keywords
- resistor
- diode
- leakage current
- circuit
- relay coil
- Prior art date
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- 239000000758 substrate Substances 0.000 claims abstract description 23
- 238000010521 absorption reaction Methods 0.000 abstract description 4
- 230000005611 electricity Effects 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 11
- 239000003990 capacitor Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000006096 absorbing agent Substances 0.000 description 2
- 206010057190 Respiratory tract infection Diseases 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000002708 enhancing Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000001264 neutralization Effects 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/008—Intrinsically safe circuits
Abstract
Description
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an emergency electrical circuit protection device, and more particularly, to an apparatus for absorbing leakage current and preventing electric shock.
Some electrical devices, such as street lamps, pump rooms, household appliances, etc., often operate in humid environments, often resulting in electric shock accidents due to leakage currents in the wires. In order to prevent electric shock, a leakage current protection switch is generally used. The first reaction of the leakage current protection switch is to prevent the load from operating normally by turning off the power supply. Next, To remove it. At this time, the load still can not be operated. Some electrical devices, even though they have a grounding protection wire, can protect only the electrical device to which the grounding protection wire is connected, so that when the electrical device is immersed in water, Accidents occur frequently.
In order to overcome the shortcomings of the prior art, the present invention provides a device for absorbing a leakage current and preventing an electric shock, and also for absorbing a leakage current to allow a load to operate normally even when the electronic component is immersed in water do.
In order to solve the above technical problem, the present invention has the following technical solution, that is, the cathode, the capacitance C5, the resistor R8 and the one end of the electrically conductive substrate 1 of the diode D4 are connected to each other, The other end of the resistor R8 and the anode of the diode D4 are connected to the ground line G of the input terminal of the leakage current absorbing electric circuit and the other end of the electric conduction board 1 is connected to the output terminal of the leakage current absorbing electric circuit L1L), the outside of the electric circuit board of the leakage current-absorbing electric circuit is surrounded by a grounded first electric conductive board, and two input terminals (L1, L2) of the electric circuit board are connected to two input terminals One input terminal L1 of the AC power source is connected to the cathode of the diode D2 and the anode of the diode D2 is connected to one end of the resistor R3 and the other end of the resistor R3 is connected to the capacitance C4, one end of the resistor R4, and the inverting input terminal of the operational amplifier OP The inphase input terminal of the operational amplifier OP is connected to one end of the resistor R5 and the resistor R6 and connected to the other end of the resistor R4 and the resistor R5 and the other end of the capacitor C4, The positive power source of the operational amplifier OP is connected to the output terminal of the bridge rectifying circuit and the resistor R6 is connected to the emitter of the transistor A1 and the output terminal of the operational amplifier OP is connected to the output terminal of the operational amplifier OP, A resistor R7 is connected between the base of the diode A1 and the collector of the transistor A1 is connected to the anode of the diode D3 and the cathode of the diode D3 is grounded, The first grouping contact J12 and the first grouping contact J11 of the relay coil ZJ are connected in series and the second grouping contact J21 of the relay coil ZJ is connected in series. Contact J22 are connected in series and the other end of the normally-closed contact J11 and the common contact J21 are connected to the input terminal L1, The input terminal L2 is connected to the other terminal of the upper contact J12 and the normally closed contact J22. The upper contact J12 and the normally closed contact J11 are connected to the output terminal L1L. The upper contact J21, A device for absorbing a leakage current and preventing electric shock is connected between the contact J22 and the output terminal L2L.
The advantageous effect of the present invention is to absorb leakage current and to prevent electric shock, and also to allow the load to operate normally even when the electronic component is immersed in water.
A voltage comparison circuit part connected to the power supply L1 of the input stage
A relay coil circuit part connected to the voltage comparison circuit part,
An open / close contact part connected to the relay coil circuit part,
An input terminal power supply (L2) connected to the terminals of the open / close contact portion
And the input terminal power source L2 is connected to the rectifying unit.
Here, the voltage comparison circuit part
One input terminal L1 of the AC power source is connected to the cathode of the diode D2,
The anode of the diode D2 is connected to one end of the resistor R3,
The other end of the resistor R3 is connected to the capacitance C4, one end of the resistor R4 and the inverting input of the operational amplifier OP,
The inphase input terminal of the operational amplifier OP is connected to one end of the resistor R5 and the resistor R6,
The other end of the resistor R4, the resistor R5, the capacitance C4, and the negative power terminal of the operational amplifier OP are grounded,
The positive power source of the operational amplifier OP is connected to the output terminal of the bridge rectifier circuit,
The resistor R6 is connected to the emitter of the transistor A1. The relay coil circuit part is connected between the output terminal of the operational amplifier OP of the voltage comparison circuit part and the base of the transistor A1 A resistor R7 is connected,
The collector of the transistor A1 is connected to the anode of the diode D3,
The cathode of the diode D3 is grounded,
The relay coil ZJ and the diode D3 are connected in parallel.
Here, the first and second contact points J12 and J11 of the relay coil ZJ of the relay coil circuit unit are connected in series to each other,
The second normally open contact J21 of the relay coil ZJ and the second normally closed contact J22 of the relay coil ZJ are connected in series,
The other end of the normally-closed contact J11 and the common contact J21 is connected to the input terminal L1,
The other input terminal L2 is connected to the other terminal of the upper contact J12 and the normally closed contact J22,
The connection between the upper contact J12 and the normally closed contact J11 is connected to the output terminal L1L,
And between the upper contact J21 and the normally closed contact J22 is connected to the output terminal L2L.
In a device for absorbing leakage current for additional purposes
Ground;
A diode circuit connected to the ground;
An electrically conductive substrate connected to the other end of the diode circuit part;
And the other end of the electrically conductive substrate has a leakage current absorbing unit connected to an output terminal power source.
Here, the diode circuit part is connected to the cathode of the diode D4, the capacitance C5, the resistor R8 and the one end of the electrically conductive substrate 1,
The other end of the capacitance C5 and the resistor R8 and the anode of the diode D4 are connected to the ground line G of the input terminal of the leakage current absorbing electric circuit,
And the other end of the electrically conductive substrate 1 is connected to the output terminal L1L of the leakage current absorbing electric circuit.
When an electric device that is not connected to a grounding protection line is immersed in water, it is not possible to prevent leakage current from flowing in water, so that electric shock accidents often occur. Install leakage current absorbing part so that electric shock due to leakage current . ≪ / RTI >
BRIEF DESCRIPTION OF THE DRAWINGS FIG.
1 is a structural schematic diagram of the present invention.
2 is a structural schematic diagram of a leakage current absorber of the present invention.
3 is a sectional view of the leakage current absorbing device taken along AA line.
4 is a principle diagram of the leakage current-absorbing electric circuit of the present invention.
2 will be described below.
In the present invention, the diode protection circuit part is formed by connecting the cathode of the diode D4, the capacitance C5, the resistor R8 and one end of the second electrically conductive substrate 4 to each other, and the capacitance C5, the resistor R8, And the anode of the diode D4 are connected to the ground line G of the input terminal of the leakage current absorbing electric circuit and the other end of the second electric conductive board 4 is connected to the output terminal L1L of the leakage current absorbing electric circuit , And the outside of the electric circuit board of the leakage current-absorbing electric circuit is surrounded by the grounded electric conductive board (1).
Referring to FIG. 4, description will be made below.
Two input terminals L1 and L2 of the electric circuit board 2 are connected to two input terminals of an AC power source,
In the voltage comparison circuit part, one input terminal L1 of the AC power source is connected to the cathode of the diode D2, the anode of the diode D2 is connected to one end of the resistor R3, and the other end of the resistor R3 is connected to the capacitance Phase input of the operational amplifier OP is connected to one end of the resistor R5 and one end of the resistor R6 and the resistor R4 is connected to one end of the resistor R4 and the inverting input terminal of the operational amplifier OP, The resistor R5, the other end of the capacitance C4, and the negative power terminal of the operational amplifier OP are grounded
The positive rectifier of the operational amplifier OP is connected to the output terminal VCC of the bridge rectifier circuit and the bridge rectifier circuit includes a resistor R1, a resistor R2, a bridge rectifier UI, a transformer T1, (C1), an electrolytic capacitor (C3), a capacitance (C2), and a diode (D1). The resistor R6 is connected to the emitter of the transistor A1,
A resistor R7 is connected between the output terminal of the operational amplifier OP and the base of the transistor A1 and the collector of the transistor A1 is connected to the anode of the diode D3, And the relay coil ZJ and the diode D3 are connected in parallel.
The first and second contact points J12 and J11 of the relay coil ZJ are connected in series to each other and the second contact point J21 of the relay coil ZJ and the second contact point J21 of the relay coil ZJ are connected in series. The other end of the normally closed contact J11 and the upper contact J21 is connected to the input end L1 and the other end L2 is connected to the other end of the common contact J12 and the normally closed contact J22. And an output terminal L1L is connected between the upper contact J12 and the normally closed contact J11 and an output terminal L2L is connected between the upper contact J21 and the normally closed contact J22. And the output terminal L2L are connected to the load, and the electric circuit board 2 of the present invention may be provided with a ground line G and a ground line FN.
The following description will be focused on FIG.
The diode protection circuit is constituted by the diode D4, the capacitance C5 and the resistor R8 of the present invention.
Is connected to the second electrically conductive substrate 4 in parallel with the resistor R8 and the second electrically conductive substrate is welded to the electrical circuit substrate 2 and is connected to the leakage current absorbing electrical circuit, The circuit board 2 was mounted in one place to form a leakage current absorber OA2.
All of the electric circuits of the present invention and the second electrically conductive substrate 4 are mounted in the device housing to absorb leakage current and to prevent electric shock.
In the present invention, FIG. 4 is as follows. When the voltage of the input terminal L1 is higher than the voltage of the ground line G, the current is lowered by passing through the voltage dividing resistor R3 after half-wave rectification of the rectifying diode D2, ) To trigger the operational amplifier OP through a capacitance C4 filter and the DC power required for triggering is provided at the output stage VCC of the bridge rectifier circuit, The current output from the operational amplifier OP triggers PnP and the transistor A1 through the current limiting resistor R7 and the current at the inphase input terminal of the operational amplifier OP flows through the shunt resistor R5 to the ground line G And the current of the collector of the transistor A1 is passed through only the relay coil ZJ due to the unidirectional action of the switch diode D3 because the collector of the transistor A1 is shunted to the collector of the PnP transistor A1 via the current limiting resistor R6 . The resistor R5 and the operational amplifier OP constitute a voltage comparator circuit and the resistors R7 and PnP type The transistor A1 and the diode D3 constitute a relay coil ZJ circuit. At this time, the input terminal L2 and the output terminal L1L are connected to each other, and the input terminal L1 and the output terminal L2L are connected to each other. When the voltage of the input terminal L1 is lower than the voltage of the ground line G, there is no voltage input to the inverting input terminal of the operational amplifier OP due to the unidirectional conduction principle of the diode D2, Does not have electricity. At this time, the input terminal L1 and the output terminal L1L are connected to each other, and the input terminal L2 and the output terminal L2L are connected to each other.
2 and Fig. 3 will be described below.
In the normal state, the second electrically conductive substrate 4 and the phase voltage input terminal L1 do not constitute a circuit, but the output terminal L1L connected to the neutral point terminal L2 constitutes a circuit. When the input terminal L1 and the input terminal L2 are immersed in water, a current flowing from the terminals connected to the phase voltage input terminal L1 flows through the water to the electric conduction board 1 around the output terminal L1L And finally flows back into the input terminal (L1). Since the amount of water in the glass is very small, the human body hardly senses the presence of current when it comes into contact with water. At this time, since there is a resistance in the water between the electric conduction substrate 1 and the output terminal, the load and the water constitute a parallel connection circuit, so that the load can obtain a normal power supply voltage.
The following description will be focused on FIG.
In the present invention, the electric conduction substrate 1 having excellent electric conduction performance is connected to the output terminal L1L side to enhance the leakage current absorbing action, and as the leakage current amount increases, the electric charge amount stored in the electric conduction substrate 1 The diode D4 is turned on and discharges through the ground line FN to prevent unexpected accidents due to an increase in the leakage current and to prevent the capacitances C5 and C5 from being generated when the stored amount of electricity reaches a certain level. The resistor R8 acts to protect the diode D4.
1: Electrically conductive substrate
2: electric circuit board part
3: Electrically non-
4: second electrically conductive substrate
100: Diode protection circuit
200: rectification part
300: voltage comparison circuit
400: Relay coil circuit
500: open / close contact part
L1: input stage
L2: input
L1L: Output stage
L2L: Output stage
R1, R2, R3, R4, R5, R6, R7, R8:
C1, C3: electrolytic capacitor
C2, C4, C5: Capacitance
D1, D2, D3, D4: Diodes
OP: Op Amp
U1: Bridge rectifier
T1: Transformer
ZJ: Relay coil
J11: Normally closed contact
J12: Upper contact
J21: Upper contact
J22: Normally closed contact
A1: transistor
G: Ground wire
FN: Ground wire
OA2: Leakage Current Absorption Part
Claims (6)
A relay coil circuit part connected to the voltage comparison circuit part;
An open / close contact part connected to the relay coil circuit part;
An input terminal power supply L2 connected to the terminals of the open / close contact portion;
Wherein the input power source (L2) is connected to a rectifying unit.
One input terminal L1 of the AC power source is connected to the cathode of the diode D2,
The anode of the diode D2 is connected to one end of the resistor R3,
The other end of the resistor R3 is connected to the capacitance C4, one end of the resistor R4 and the inverting input of the operational amplifier OP,
The inphase input terminal of the operational amplifier OP is connected to one end of the resistor R5 and the resistor R6,
The other end of the resistor R4, the resistor R5, the capacitance C4, and the negative power terminal of the operational amplifier OP are grounded,
The positive power source of the operational amplifier OP is connected to the output terminal of the bridge rectifier circuit,
And the resistor (R6) is connected to an emitter of the transistor (A1).
The collector of the transistor A1 is connected to the anode of the diode D3,
The cathode of the diode D3 is grounded,
Characterized in that the relay coil (ZJ) and the diode (D3) are connected in parallel.
The second normally open contact J21 of the relay coil ZJ and the second normally closed contact J22 of the relay coil ZJ are connected in series,
The other end of the normally-closed contact J11 and the common contact J21 is connected to the input terminal L1,
The other input terminal L2 is connected to the other terminal of the upper contact J12 and the normally closed contact J22,
The connection between the upper contact J12 and the normally closed contact J11 is connected to the output terminal L1L,
And a junction between the upper contact (J21) and the normally closed contact (J22) is connected to the output terminal (L2L)
A diode circuit connected to the ground;
An electrically conductive substrate connected to the other end of the diode circuit part;
And the other end of the electrically conductive substrate has a leakage current absorbing unit connected to an output terminal power source.
The other end of the capacitance C5 and the resistor R8 and the anode of the diode D4 are connected to the ground line G of the input terminal of the leakage current absorbing electric circuit,
And the other end of the electrically conductive substrate (1) is connected to the output terminal (L1L) of the leakage current absorbing electric circuit.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420501213.8 | 2014-09-02 | ||
| CN201420501213.8U CN204030154U (en) | 2014-09-02 | 2014-09-02 | Inhale leakage current, Anti-electric-shock power socket |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| KR20160027887A true KR20160027887A (en) | 2016-03-10 |
Family
ID=52069984
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1020150054647A KR20160027887A (en) | 2014-09-02 | 2015-04-17 | The device that absorb leak electric current |
Country Status (2)
| Country | Link |
|---|---|
| KR (1) | KR20160027887A (en) |
| CN (1) | CN204030154U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20220021320A (en) | 2020-08-13 | 2022-02-22 | 김학민 | Leackage current stopper |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111751742B (en) * | 2020-06-30 | 2022-12-02 | 上海瓶安新能源科技有限公司 | Battery pack water inlet and leakage detection device with self-checking function and control method |
| CN111751745B (en) * | 2020-06-30 | 2022-12-06 | 上海瓶安新能源科技有限公司 | Battery pack leakage detection device with self-checking function and control method thereof |
| CN111751743B (en) * | 2020-06-30 | 2022-12-02 | 上海瓶安新能源科技有限公司 | Battery pack water detection device with self-checking function and control method thereof |
-
2014
- 2014-09-02 CN CN201420501213.8U patent/CN204030154U/en not_active Expired - Fee Related
-
2015
- 2015-04-17 KR KR1020150054647A patent/KR20160027887A/en not_active Application Discontinuation
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20220021320A (en) | 2020-08-13 | 2022-02-22 | 김학민 | Leackage current stopper |
Also Published As
| Publication number | Publication date |
|---|---|
| CN204030154U (en) | 2014-12-17 |
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| Date | Code | Title | Description |
|---|---|---|---|
| A201 | Request for examination | ||
| N231 | Notification of change of applicant | ||
| E902 | Notification of reason for refusal | ||
| E601 | Decision to refuse application |