CN202444252U - Novel power protection device - Google Patents
Novel power protection device Download PDFInfo
- Publication number
- CN202444252U CN202444252U CN2012200492233U CN201220049223U CN202444252U CN 202444252 U CN202444252 U CN 202444252U CN 2012200492233 U CN2012200492233 U CN 2012200492233U CN 201220049223 U CN201220049223 U CN 201220049223U CN 202444252 U CN202444252 U CN 202444252U
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- China
- Prior art keywords
- output
- circuit
- optical coupler
- transfer contact
- power supply
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- 230000003287 optical effect Effects 0.000 claims description 27
- 230000001681 protective effect Effects 0.000 claims description 11
- 239000003990 capacitor Substances 0.000 claims description 7
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 6
- 230000000087 stabilizing effect Effects 0.000 claims description 6
- 239000000523 sample Substances 0.000 claims description 5
- 230000002457 bidirectional effect Effects 0.000 claims description 3
- 229960001296 zinc oxide Drugs 0.000 claims description 3
- 239000011787 zinc oxide Substances 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 abstract description 2
- 230000001419 dependent effect Effects 0.000 abstract 3
- 238000010304 firing Methods 0.000 abstract 1
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 230000010355 oscillation Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000003534 oscillatory effect Effects 0.000 description 1
- 230000005236 sound signal Effects 0.000 description 1
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- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
Abstract
The utility model relates to a novel power protection device. Output ends of a phase line L and a zero line M are connected with a voltage dependent resistor RV, the output end of the voltage dependent resistor RV is connected with a first photo-coupler IC2 and a first photo-coupler IC3, the output ends of the first photo-coupler IC2 and the first photo-coupler IC3 are respectively connected with the input end of a socket CZ through a first transfer contact KA and a second transfer contact KB, and the output end of the first transfer contact KA is connected with a warning circuit and a carrier radiating circuit. When thunder and lightning happen, high voltage pulse induced by a power grid punctures and breaks over the voltage dependent resistor RV, power supply output voltage is limited in a normal scope and the function of instant overvoltage protection is provided. When the zero line is disconnected to be a firing line, the device controls the relay to suck and disconnect through connection and disconnection, power utilization safety is protected, simultaneously alarm information is sent to a carrier wave host machine through carrier signals, voice warns are sent out, and purposes of safely monitoring and protection are achieved.
Description
Technical field
The utility model relates to a kind of protective device, particularly be a kind of novel power supply protective device.
Background technology
Normal ac commercial power voltage is 220V, is provided by a phase line L and zero line N.If when electrical network or Repair of Transformer, wrongly another root phase line is made zero line insert electric power system, become mutually power supply mutually, thunderstorm hour perhaps takes place, the electrical network high-voltage pulse of inducting, all can make the civil power output voltage is 380V, will cause phase voltage too high, burns out electric equipment.
The utility model content
The purpose of the utility model is to overcome above-mentioned deficiency, and a kind of novel power supply protective device is provided.
The utility model solves the technical scheme that its technical problem adopted: a kind of novel power supply protective device; Output by phase line L and zero line N is connected piezo-resistance RV; The output of piezo-resistance RV is connected to the first optical coupler IC2 and the first optical coupler IC3; Be connected with AC relay K1 between the input of the first optical coupler IC2 and the first optical coupler IC3; Its output is connected to the input of socket CZ respectively through the first transfer contact KA, the second transfer contact KB, the output of the said first transfer contact KA is connected with warning circuit and carrier transmit circuit.
Said piezo-resistance RV is the Zinc-oxide piezoresistor of 470V, 3000A.
The said first optical coupler IC2 and the first optical coupler IC3 all adopt bidirectional triode thyristor output type optical coupler.
Said warning circuit comprises halfwave rectifier diode D1, current-limiting resistance 1R3, music triode IC1, transistor Q2 and the piezoelectric buzzer HTD that connects successively, and the input of music triode IC1 also is connected with voltage stabilizing didoe DW and filter capacitor 1C1.
The one 555 time-base circuit oscillating circuit U1, the 2 555 time-base circuit oscillating circuit U2 of two different frequencies that the short-circuit type alarm probe M that said carrier transmit circuit is connected by relay J 1 output, M1 output connect produce pulse-modulated signal, and this signal sends the carrier wave alarm signal through the pulse modulated circuit that triode Q1, transformer BT, capacitor C 5, C6 constitute to the carrier wave main frame again.
Through adopting above-mentioned technical scheme, the beneficial effect of the utility model is: when thunderstorm hour takes place, the high-voltage pulse that electrical network is inducted makes piezo-resistance puncture conducting; The output voltage of will supplying power is limited in the normal range (NR); Play moment overvoltage protection effect, and when the zero line misconnection was live wire, this device passed through the conducting of photoelectric coupled circuit or ends the adhesive or the disconnection of control relay; The Electrical Safety of protection electric equipment; Send warning message through carrier signal to the carrier wave main frame simultaneously, and send language alarm, reach the purpose of security monitoring protection.
Description of drawings
Fig. 1 is the circuit theory diagrams of the utility model.
Embodiment
As shown in Figure 1; A kind of novel power supply protective device of the utility model; Output by phase line L and zero line N is connected piezo-resistance RV; The output of piezo-resistance RV is connected to the first optical coupler IC2 and the first optical coupler IC3; Be connected with AC relay K1 between the input of the first optical coupler IC2 and the first optical coupler IC3, its output is connected to the input of socket CZ respectively through the first transfer contact KA, the second transfer contact KB, and the output of the said first transfer contact KA is connected with warning circuit and carrier transmit circuit.
Said piezo-resistance RV is the Zinc-oxide piezoresistor of 470V, 3000A, and it mainly acts on is to take shelter from the thunder, absorb surge voltage.Piezo-resistance RV resistance is very big during the power supply operate as normal, and supply line is not had influence.When thunderstorm hour takes place, the high-voltage pulse that electrical network is inducted makes piezo-resistance RV puncture conducting, and the output voltage of will supplying power is limited in the normal range (NR), plays moment overvoltage protection effect.The first optical coupler IC2 and the first optical coupler IC3 all adopt bidirectional triode thyristor output type optical coupler; The first transfer contact KA, the second transfer contact KB are normally closed; In supply line just often, promptly the L end is zero line for phase line N end, when the L end is held to phase line for zero line N; The first optical coupler IC2 and the first optical coupler IC3 can only be conductings; Because AC relay K1 is in release condition, the first transfer contact KA, second transfer contact KB connection socket CZ power supply, but the electrical appliance operate as normal.Resistance 1R1,1R2 are respectively the input current-limiting resistance of the first optical coupler IC2 and the first optical coupler IC3.When connecting false line, make L, N hold when being phase line the first optical coupler IC2 and the equal conducting of the first optical coupler IC3; AC relay K1 adhesive; The first transfer contact KA, the second transfer contact KB dislocation make socket CZ outage, guarantee the safety of power consumption equipment.Because the wrong zero line is a live wire; The 380V alternating current is behind diode D1 halfwave rectifier, resistance 1R3 current limliting, voltage stabilizing didoe DW voltage stabilizing and electric capacity 1C1 smothing filtering; IC1 provides 3V operating voltage for the music triode; After its music triode IC1 output audio signal was amplified by transistor Q2, drive pressure electric buzzer HTD sent music alarm sound, just stopped until cutting off the input power supply.Simultaneously; Because the positive voltage that voltage stabilizing didoe DW voltage stabilizing produces provides working power for the carrier transmit circuit; The one 555 time-base circuit oscillating circuit U1, the 2 555 time-base circuit oscillating circuit U2 of two different frequencies that the short-circuit type alarm probe M that the carrier transmit circuit is connected by relay J 1 output, M1 output connect produce pulse-modulated signal; During transistor Q2 conducting; Relay J 1 adhesive, its contact J1-1 makes short-circuit type alarm probe M and M1 point be in on-state by transferring normally closed point normal battle to.When short-circuit type alarm probe M and M1 two terminal shortcircuits; The one 555 time-base circuit oscillating circuit U1 constitutes low-frequency oscillatory network; Its 3rd pin output frequency is the low frequency signal of F1, and frequency F1 is mainly by capacitor C 1, R2 decision, when 3 pin of U1 are exported high level; The high-frequency oscillating circuits work that the 2 555 time-base circuit oscillating circuit U2 constitutes; Its frequency of oscillation F2 is mainly by capacitor C 3, R4 decision, and frequency of oscillation F2 is output as the pulse-modulated signal of frequency of oscillation F2 like this much larger than frequency F1 at the 3rd pin of the 2 555 time-base circuit oscillating circuit U2.This modulation signal produces the high frequency modulated pulse through the drive circuit that is made up of triode Q1, transformer BT, capacitor C 5, C6 on power line, the high frequency modulated pulse voltage is sent the carrier wave alarm signal to the carrier wave main frame.
An above-described preferred embodiment that is merely the utility model can not limit the scope that the utility model is implemented, and every equalization of being done according to the utility model claim changes and decorates, and all should still belong in the scope that the utility model contains.
Claims (5)
1. novel power supply protective device; It is characterized in that: the output by phase line L and zero line N is connected piezo-resistance RV; The output of piezo-resistance RV is connected to the first optical coupler IC2 and the first optical coupler IC3; Be connected with AC relay K1 between the input of the first optical coupler IC2 and the first optical coupler IC3; Its output is connected to the input of socket CZ respectively through the first transfer contact KA, the second transfer contact KB, the output of the said first transfer contact KA is connected with warning circuit and carrier transmit circuit.
2. novel power supply protective device according to claim 1 is characterized in that: said piezo-resistance RV is the Zinc-oxide piezoresistor of 470V, 3000A.
3. novel power supply protective device according to claim 1 is characterized in that: the said first optical coupler IC2 and the first optical coupler IC3 all adopt bidirectional triode thyristor output type optical coupler.
4. novel power supply protective device according to claim 1; It is characterized in that: said warning circuit comprises halfwave rectifier diode D1, current-limiting resistance 1R3, music triode IC1, transistor Q2 and the piezoelectric buzzer HTD that connects successively, and the input of music triode IC1 also is connected with voltage stabilizing didoe DW and filter capacitor 1C1.
5. novel power supply protective device according to claim 1; It is characterized in that: the one 555 time-base circuit oscillating circuit U1, the 2 555 time-base circuit oscillating circuit U2 of two different frequencies that the short-circuit type alarm probe M that said carrier transmit circuit is connected by relay J 1 output, M1 output connect produce pulse-modulated signal, and this signal sends the carrier wave alarm signal through the pulse modulated circuit that triode Q1, transformer BT, capacitor C 5, C6 constitute to the carrier wave main frame again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200492233U CN202444252U (en) | 2012-02-16 | 2012-02-16 | Novel power protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200492233U CN202444252U (en) | 2012-02-16 | 2012-02-16 | Novel power protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202444252U true CN202444252U (en) | 2012-09-19 |
Family
ID=46825682
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200492233U Expired - Fee Related CN202444252U (en) | 2012-02-16 | 2012-02-16 | Novel power protection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202444252U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108120872A (en) * | 2017-12-27 | 2018-06-05 | 奥克斯空调股份有限公司 | A kind of protection system and method for three-phase electricity air-conditioner controller |
| CN110855280A (en) * | 2019-12-13 | 2020-02-28 | 珠海格力电器股份有限公司 | Solid state relay circuit and heating device |
-
2012
- 2012-02-16 CN CN2012200492233U patent/CN202444252U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108120872A (en) * | 2017-12-27 | 2018-06-05 | 奥克斯空调股份有限公司 | A kind of protection system and method for three-phase electricity air-conditioner controller |
| CN110855280A (en) * | 2019-12-13 | 2020-02-28 | 珠海格力电器股份有限公司 | Solid state relay circuit and heating device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120919 Termination date: 20130216 |