CN202127241U - Electric leakage protection and warning device of single-phase switch - Google Patents
Electric leakage protection and warning device of single-phase switch Download PDFInfo
- Publication number
- CN202127241U CN202127241U CN2011202361608U CN201120236160U CN202127241U CN 202127241 U CN202127241 U CN 202127241U CN 2011202361608 U CN2011202361608 U CN 2011202361608U CN 201120236160 U CN201120236160 U CN 201120236160U CN 202127241 U CN202127241 U CN 202127241U
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- Prior art keywords
- phase switch
- thyristor
- rectifier bridge
- speech
- output
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- 230000002093 peripheral effect Effects 0.000 claims description 12
- 230000001681 protective effect Effects 0.000 claims description 9
- 230000005611 electricity Effects 0.000 abstract description 9
- 239000003990 capacitor Substances 0.000 abstract 2
- 238000004519 manufacturing process Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000007600 charging Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 239000012467 final product Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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Abstract
The utility model relates to a switch electric leakage protection device, in particular to an electric leakage protection and warning device of a single-phase switch, which mainly comprises a photoelectric coupler, a rectifier bridge, a capacitor, a voice integrated circuit, an amplifier, a loudspeaker and a contactor coil. Output ends of a fire wire and a zero wire of the single-phase switch are connected with the rectifier bridge, one output end of the rectifier bridge is connected with the anode of a thyristor, and the capacitor, the voice integrated circuit and the contactor coil are connected in parallel between the other end of the rectifier bridge and the cathode of the thyristor. The photoelectric coupler is connected between a ground wire and the zero wire of the single-phase switch, the cathode of a diode is connected with the zero wire, an output end of a triode is connected with a gate of the thyristor, and a voice output end of the voice integrated circuit is connected with a two-stage amplifying device. If the single-phase switch causes electricity leakage, the contactor coil obtains electricity, and a contactor auxiliary normally-closed contact is opened to cut off a power supply return circuit. The electric leakage protection and warning device can effectively avoid casualties caused by electric leakage, and is convenient to use, safe and reliable.
Description
Technical field
The utility model relates to a kind of switch earth leakage protective device, relates in particular to single-phase switch earth leakage protective and warning device, belongs to General Electric's auxiliary equipment technical field.
Background technology
In commercial production and civil equipment, the use of single-phase switch is very general.Especially on-the-spot in commercial production, various power consumption equipment frequencies of utilization are very high, all need use power supply, often use single-phase switch.There are power distribution cabinet and patchboard in traditional power supply source, but power distribution cabinet generally is mounted in the fixed distribution room, and the cable of on-the-spot equipment falls short of, and is mobile dumb, and a lot of occasions can't be supplied power; Though the patchboard conveniently moving, if the power consumption equipment electric leakage, the staff can't judge whether it leaks electricity and operation rashly, brings threat can for people's life.Under the policy of implementing " safety in production, people-oriented " energetically, whether the check power consumption equipment leaks electricity and in time cut off the electricity supply becomes a problem that must solve.The related device of the utility model can carry out detection of electrical leakage and warning, and in time cuts off power supply.
Summary of the invention
The purpose of the utility model provides a kind of switch earth leakage protective device, can carry out detection of electrical leakage and warning to single-phase switch, and in time cuts off power supply.
The technical scheme of the utility model is: the switch earth leakage protective device mainly comprises photoelectrical coupler 5 and peripheral cell, rectifier bridge 9 and peripheral cell thereof, electric capacity 13, speech IC 17 and peripheral cell thereof, amplifier 24 and 28 and peripheral cell, loud speaker 32 and contactor coil 34.The live wire of single-phase switch links to each other with rectifier bridge 9 with the output of zero line, and an output of rectifier bridge links to each other with the anode of thyristor, be connected in parallel to electric capacity 13, speech IC 17 and contactor coil 34 between the negative electrode of another output and thyristor; Be connected with photoelectrical coupler 5 between the ground wire of single-phase switch 2 and the zero line; Photoelectrical coupler comprises a triode and a diode; The negative electrode of diode is connected on the zero line, and the triode output of photoelectrical coupler links to each other with the gate pole of thyristor 11, to thyristor triggering signal is provided.The speech output end of speech IC 17 connects the two-stage amplifying device, and loud speaker 32 links to each other with the output of second level amplifier.Also be in series with normally closed switch type stop button 4 between the ground wire of single-phase switch and the zero line,, can make things convenient for maintainer's safety inspection on the one hand if the single-phase switch electric leakage then can be pressed stop button; Can prevent that on the other hand the electric leakage accident from enlarging, remove electric leakage immediately, take off power consumption equipment.Also be in series with normally closed switch type stop button 15 in the connection line of the negative electrode of thyristor 11 and speech IC 17, pressing this button can remove alarm signal by hand, and can restore electricity.
The wiring of electrical appliance is connected on the live wire of single-phase switch 2, zero line, ground wire respectively.If the electrical appliance electric leakage, then the ground wire of single-phase switch constitutes the loop through the diode and the zero line of normally closed switch type stop button, photoelectrical coupler.The live wire of single-phase switch 2 and the output of zero line become direct current through behind the rectifier bridge 9 with AC rectification.An output of rectifier bridge links to each other with the anode of thyristor 11, be connected in parallel to electric capacity 13, speech IC 17 and contactor coil 34 between the negative electrode of another output and thyristor 11.Photoelectrical coupler conducting during electric leakage, the phototriode output signal of photoelectrical coupler provides triggering signal, the thyristor conducting for thyristor 11.So direct current and electric capacity 13, speech IC 17 and the contactor coil 34 of rectifier bridge 9 outputs are all connected; Begin to be electric capacity 13 chargings; For speech IC 17 driving power is provided simultaneously; It is electric to make that also contactor coil 34 gets, thereby control contactor 34 auxiliary normally-closed contacts break off, and cut off the power supply loop.After the power supply loop is broken off, because electric capacity 13 has been stored a part of electric weight, constitute continuous current circuit with speech IC 17,13 pairs of speech ICs of electric capacity 17 continue power supply, and loud speaker 32 continues to report a period of time, to make things convenient for call user's attention safety.Press one of them stop button, the direct current of rectifier bridge 9 outputs is cut off, and removes loud speaker 32 warnings, and contactor coil 34 dead electricity, and the auxiliary normally-closed contact of contactor is closed again, and power supply continues power supply, and single-phase 2 passes of opening recover normal.The normally closed switch type stop button 4 of connecting between the ground wire of single-phase switch 2 and the zero line is the first class of protection switch, if the single-phase switch electric leakage then need be pressed this button immediately, breaks off the electric leakage power supply.The stop button 15 of the negative electrode output series connection of thyristor is the second class protection switch, if will remove warning device, can press this button.Two stop buttons all are normally closed switchs.
The audio frequency output of speech IC 17 links to each other with 28 with two amplifiers 24, and two amplifiers all adopt in-phase proportion input amplifying circuit mode.If the electrical appliance electric leakage, the output signal of speech IC 17 is very faint, can small-signal be zoomed into loud speaker acceptable signal through the two-stage amplifying device.The output of second amplifier 28 links to each other with loud speaker 32, and two amplifiers amplify small-signal, and loud speaker sends audio alert.
The beneficial effect of the utility model is:
(1) safe and reliable.After electrical appliance connected single-phase switch, if the electrical appliance electric leakage, then loud speaker was reported immediately; The contactor normally-closed contact breaks off, and the power supply loop is broken off.
(2) simple to operate, convenient.If will remove alarm signal, only need press stop button and get final product; If will restore electricity, only need press stop button and get final product.
Description of drawings
Fig. 1 is a kind of single-phase switch earth leakage protective warning device structural representation of iron and steel enterprise
Each label is represented successively among the figure: 1-contactor normally-closed contact, 2-single-phase switch, 3-resistance, 4-stop button, 5-photoelectrical coupler, 6-resistance, 7-electric capacity; The 8-diode, 9-rectifier bridge, 10-resistance, 11-thyristor, 12-resistance, 13-electric capacity, 14-voltage-stabiliser tube; The 15-stop button, 16-resistance, 17-speech IC, 18-resistance, 19-electric capacity, 20-ground connection; 21-resistance, 22,23-resistance, 24-amplifier, 25-electric capacity, 26,27-resistance, 28-amplifier; 29-resistance, 30-ground connection, 31-resistance, 32-loud speaker, 33-electric capacity, 34-contactor coil.
Embodiment
Under combine accompanying drawing and embodiment, the utility model is done further to set forth, but the content of the utility model is not limited to said scope.
Shown in accompanying drawing, the switch earth leakage protective device mainly comprises photoelectrical coupler 5 and peripheral cell, rectifier bridge 9 and peripheral cell thereof, electric capacity 13, speech IC 17 and peripheral cell thereof, amplifier 24 and 28 and peripheral cell, loud speaker 32 and contactor coil 34.The live wire of single-phase switch links to each other with rectifier bridge 9 with the output of zero line, and an output of rectifier bridge links to each other with the anode of thyristor, be connected in parallel to electric capacity 13, speech IC 17 and contactor coil 34 between the negative electrode of another output and thyristor; Be connected with photoelectrical coupler 5 between the ground wire of single-phase switch 2 and the zero line, photoelectrical coupler comprises a triode and a diode, and the negative electrode of diode is connected on the zero line, and the triode output of photoelectrical coupler links to each other with the gate pole of thyristor 11.The speech output end of speech IC 17 connects the two-stage amplifying device, and loud speaker 32 links to each other with the output of second level amplifier.Also be in series with normally closed switch type stop button 4 between the ground wire of single-phase switch and the zero line, also be in series with normally closed switch type stop button 15 in the connection line of the negative electrode of thyristor 11 and speech IC 17.
During use, single-phase switch 2 and warning device are installed in same distribution board.The live wire of single-phase switch 2 and the output of zero line become direct current through behind the rectifier bridge 9 with AC rectification.The output of rectifier bridge 9 links to each other with the anode of thyristor 11.The ground wire of single-phase switch links to each other with the anode of the photodiode of photoelectrical coupler 5, and the negative electrode of photodiode is connected to zero line through behind the diode 8.The collector electrode of the phototriode of photoelectrical coupler 5 links to each other with the gate pole of thyristor 11, triggering signal is provided for thyristor 11.The audio frequency output of speech IC 17 links to each other with two amplifiers 24,28, and two amplifiers 24,28 all adopt in-phase proportion input amplifying circuit mode.If the electrical appliance electric leakage, the output signal of speech IC 17 is very faint, can small-signal be zoomed into loud speaker 32 acceptable signals, loud speaker 32 audio alerts through the two-stage amplifying device.
The wiring of electrical appliance is connected on the live wire of single-phase switch 2, zero line, ground wire respectively.If the electrical appliance electric leakage, then the ground wire of single-phase switch 2 is through stop button 4, and diode 8 constitutes the loop with zero line.Photoelectrical coupler 5 conductings, the phototriode output signal of photoelectrical coupler 5 provides triggering signal, thyristor 11 conductings for thyristor 11.So direct current and electric capacity 13, speech IC 17 and the contactor coil 34 of rectifier bridge 9 outputs are all connected; Begin to be electric capacity 13 chargings; For speech IC 17 driving power is provided simultaneously; It is electric to make that also contactor coil 34 gets, and the auxiliary normally-closed contact 1 of the contactor of driving power current supply circuit breaks off, and cuts off the power supply loop.After the power supply loop was broken off, electric capacity 13 constituted continuous current circuit with speech IC 17, and 13 pairs of speech ICs of electric capacity 17 continue power supply, and loud speaker continues to report a period of time, to make things convenient for call user's attention safety.
Except aforementioned functional, operating personnel can also manually press stop button 4, and both convenient and safe maintenance can also prevent that the electric leakage accident from enlarging, and removes electric leakage immediately, takes off power consumption equipment.Also can manually press stop button 15 after hearing leakage-current alarm, remove loud speaker and report 32, while contactor coil 34 dead electricity, power supply continues power supply, and single-phase switch 2 recovers normal.
In the present embodiment; Each main element type selecting is: thyristor is BT169; Photoelectrical coupler is PS2051; Rectifier bridge is 1B4B42; Amplifier is OPAMP, and speech IC is BA08, and loud speaker is the miniature moving-coil type loud speaker of
.
Claims (2)
1. single-phase switch earth leakage protective and warning device; It is characterized in that: comprise photoelectrical coupler (5) and peripheral cell thereof, rectifier bridge (9) and peripheral cell thereof, electric capacity (13), speech IC (17) and peripheral cell thereof, amplifier (24) and (28) and peripheral cell thereof, loud speaker (32) and contactor coil (34); The live wire of single-phase switch links to each other with rectifier bridge (9) with the output of zero line; An output of rectifier bridge links to each other with the anode of thyristor (11), be connected in parallel to electric capacity (13), speech IC (17) and contactor coil (34) between the negative electrode of another output and thyristor; Be connected with photoelectrical coupler (5) between the ground wire of single-phase switch (2) and the zero line; Photoelectrical coupler comprises a triode and a diode; The negative electrode of diode is connected on the zero line; The triode output of photoelectrical coupler links to each other with the gate pole of thyristor (11), and the speech output end of speech IC (17) connects the two-stage amplifying device, and loud speaker (32) links to each other with the output of second level amplifier.
2. single-phase switch earth leakage protective according to claim 1 and warning device; It is characterized in that: be in series with normally closed switch type stop button (4) between the ground wire of single-phase switch and the zero line, be in series with normally closed switch type stop button (15) in the connection line of the negative electrode of thyristor (11) and speech IC (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202361608U CN202127241U (en) | 2011-07-06 | 2011-07-06 | Electric leakage protection and warning device of single-phase switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202361608U CN202127241U (en) | 2011-07-06 | 2011-07-06 | Electric leakage protection and warning device of single-phase switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202127241U true CN202127241U (en) | 2012-01-25 |
Family
ID=45490303
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202361608U Expired - Fee Related CN202127241U (en) | 2011-07-06 | 2011-07-06 | Electric leakage protection and warning device of single-phase switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202127241U (en) |
-
2011
- 2011-07-06 CN CN2011202361608U patent/CN202127241U/en not_active Expired - Fee Related
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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: 20120125 Termination date: 20140706 |
|
| EXPY | Termination of patent right or utility model |