CN204144939U - A kind of lightning protection circuit - Google Patents
A kind of lightning protection circuit Download PDFInfo
- Publication number
- CN204144939U CN204144939U CN201420522803.9U CN201420522803U CN204144939U CN 204144939 U CN204144939 U CN 204144939U CN 201420522803 U CN201420522803 U CN 201420522803U CN 204144939 U CN204144939 U CN 204144939U
- Authority
- CN
- China
- Prior art keywords
- resistance
- transient suppression
- suppression diode
- piezo
- discharge tube
- Prior art date
- 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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Abstract
The utility model discloses a kind of lightning protection circuit, comprise discharge tube RV1, piezo-resistance RV2, Transient Suppression Diode TVS1, discharge tube RV4, piezo-resistance RV3, Transient Suppression Diode TVS2, discharge tube RV6, piezo-resistance RV5, Transient Suppression Diode TVS3, after discharge tube RV1 connects with piezo-resistance RV2, in parallel with Transient Suppression Diode TVS1, the two ends of Transient Suppression Diode TVS1 are connected across between live wire L and zero line N, discharge tube RV4, after piezo-resistance RV3 series connection, in parallel with Transient Suppression Diode TVS2, between the two ends cross-over connection live wire L of Transient Suppression Diode TVS2 and ground wire PE, discharge tube RV6, after piezo-resistance RV5 series connection, in parallel with Transient Suppression Diode TVS3, between the two ends cross-over connection zero line N of Transient Suppression Diode TVS3 and ground wire PE.The utility model provides the lightning protection circuit that a kind of structure is simple, lightning protection effect good, cost is low.
Description
Technical field
The utility model relates to a kind of lightning protection circuit.
Background technology
Along with the paces of communication field process are constantly accelerated.The continuous foundation of communication base station, for proterctive equipment and the safety protecting life, by design in several serious fires personnel and broad masses of the people's extensive concern.Therefore the generation that effectively prevent the fire incident that thunderbolt causes is needed.Because circuit is subject to frequently being struck by lightning action, make the reliability of power supply receive very large impact, cause communicating interrupt, brought inconvenience, existing anti-lightening protector complex structure, cost is high, and lightning protection effect is very poor.
Utility model content
The purpose of this utility model overcomes deficiency in existing product, provides the lightning protection circuit that a kind of structure is simple, lightning protection effect good, cost is low.
In order to achieve the above object, the utility model is achieved through the following technical solutions:
A kind of lightning protection circuit, comprise discharge tube RV1, piezo-resistance RV2, Transient Suppression Diode TVS1, discharge tube RV4, piezo-resistance RV3, Transient Suppression Diode TVS2, discharge tube RV6, piezo-resistance RV5, Transient Suppression Diode TVS3, after described discharge tube RV1 connects with piezo-resistance RV2, in parallel with Transient Suppression Diode TVS1, the two ends of described Transient Suppression Diode TVS1 are connected across between live wire L and zero line N, described discharge tube RV4, after piezo-resistance RV3 series connection, in parallel with Transient Suppression Diode TVS2, between the two ends cross-over connection live wire L of described Transient Suppression Diode TVS2 and ground wire PE, described discharge tube RV6, after piezo-resistance RV5 series connection, in parallel with Transient Suppression Diode TVS3, between the two ends cross-over connection zero line N of described Transient Suppression Diode TVS3 and ground wire PE.
The utility model also comprises zero sequence current mutual inductor LA, resistance R10, amplifier chip U2, voltage-stabiliser tube D7, current transformer A, resistance R35, amplifier chip U2, diode D4, resistance R7, voltage-stabiliser tube D6, diode D5, resistance R12, live wire L and zero line N is through zero sequence current mutual inductor LA, the output of zero sequence current mutual inductor LA is input to an input of amplifier chip U2 by resistance R10, an output of amplifier chip U2 connects diode D5, one end of diode D5 contact resistance R12, the other end of resistance R12 connects earth signal by voltage-stabiliser tube D7, live wire L is through current transformer A, the output of current transformer A is input to another input of amplifier chip U2 by resistance R35, another output of amplifier chip U2 connects the positive pole of diode D4, one end of the negative pole contact resistance R7 of diode D4, the other end of resistance R7 also connects earth signal by voltage-stabiliser tube D6
The beneficial effects of the utility model are as follows: the utility model can ensure that more big current passes through, and meet the requirements at the higher level to electricity consumption of client; The utility model is to lightning wave, overvoltage and harmonic absorption or release, and make circuit working safer, stable, the utility model components and parts are few, and structure structure is simple, and cost is low,
The utility model has absorption and the effect of releasing by piezo-resistance, discharge tube, Transient Suppression Diode to lightning wave; thus available protecting zero line N, live wire L, ground wire PE, circuit can be run normally, the utility model components and parts are few; structure structure is simple, and cost is low.The utility model gathers electric current, leakage current by zero sequence current mutual inductor LA, resistance R10, amplifier chip U2, voltage-stabiliser tube D7, current transformer A, resistance R35, amplifier chip U2, diode D4, resistance R7, voltage-stabiliser tube D6.
Accompanying drawing explanation
Fig. 1 is electrical block diagram of the present utility model.
Embodiment
Below in conjunction with Figure of description, the technical solution of the utility model is described further:
As shown in Figure 1, a kind of lightning protection circuit, comprise discharge tube RV1, piezo-resistance RV2, Transient Suppression Diode TVS1, discharge tube RV4, piezo-resistance RV3, Transient Suppression Diode TVS2, discharge tube RV6, piezo-resistance RV5, Transient Suppression Diode TVS3, after discharge tube RV1 connects with piezo-resistance RV2, in parallel with Transient Suppression Diode TVS1, the two ends of Transient Suppression Diode TVS1 are connected across between live wire L and zero line N, discharge tube RV4, after piezo-resistance RV3 series connection, in parallel with Transient Suppression Diode TVS2, between the two ends cross-over connection live wire L of Transient Suppression Diode TVS2 and ground wire PE, discharge tube RV6, after piezo-resistance RV5 series connection, in parallel with Transient Suppression Diode TVS3, between the two ends cross-over connection zero line N of Transient Suppression Diode TVS3 and ground wire PE.The utility model also comprises zero sequence current mutual inductor LA, resistance R10, amplifier chip U2, voltage-stabiliser tube D7, current transformer A, resistance R35, amplifier chip U2, diode D4, resistance R7, voltage-stabiliser tube D6, diode D5, resistance R12, live wire L and zero line N is through zero sequence current mutual inductor LA, the output of zero sequence current mutual inductor LA is input to an input of amplifier chip U2 by resistance R10, an output of amplifier chip U2 connects diode D5, one end of diode D5 contact resistance R12, the other end of resistance R12 connects earth signal by voltage-stabiliser tube D7, live wire L is through current transformer A, the output of current transformer A is input to another input of amplifier chip U2 by resistance R35, another output of amplifier chip U2 connects the positive pole of diode D4, one end of the negative pole contact resistance R7 of diode D4, the other end of resistance R7 also connects earth signal by voltage-stabiliser tube D6.
Be connected across between zero line N and live wire L after discharge tube RV1 connects with piezo-resistance RV2, Transient Suppression Diode TVS1 is also connected between zero line N and live wire L, when voltage reaches certain value, discharge tube RV1 will be breakdown, thus a large amount of leakage currents by circuit release enter the earth.Discharge tube RV1 plays the effect of protection piezo-resistance RV2, plays an on-off action, when not having transient voltage, piezo-resistance RV2 and circuit can be separated, make piezo-resistance RV2 almost No leakage electric current.Transient Suppression Diode TVS1 plays pressure stabilization function, the high impedance of two interpolars becomes Low ESR, absorbs the surge power up to thousands of watts, makes the voltage clamp of two interpolars in about 900V, thus to lightning wave, overvoltage and harmonic absorption or release, make circuit working safer, stable.
Piezo-resistance RV3 is connected across after connecting with discharge tube RV4 between live wire L and ground wire PE, Transient Suppression Diode TVS2 is also connected between live wire L and ground wire PE, when voltage reaches certain value, discharge tube RV4 will be breakdown, thus a large amount of leakage currents by circuit release enter the earth.Discharge tube RV4 plays the effect of protection piezo-resistance RV3, plays an on-off action, when not having transient voltage, piezo-resistance RV3 and circuit can be separated, make piezo-resistance RV3 almost No leakage electric current.Transient Suppression Diode TVS2 plays pressure stabilization function, the high impedance of two interpolars becomes Low ESR, absorbs the surge power up to thousands of watts, makes the voltage clamp of two interpolars in about 900V, thus to lightning wave, overvoltage and harmonic absorption or release, make circuit working safer, stable.
Piezo-resistance RV5 is connected across after connecting with discharge tube RV6 between ground wire PE and zero line N, also connects Transient Suppression Diode TVS3 between ground wire PE and zero line N.When voltage reaches certain value, discharge tube RV6 will be breakdown, thus a large amount of leakage currents by circuit release enter the earth.Discharge tube RV6 plays the effect of protection piezo-resistance RV5, plays an on-off action, when not having transient voltage, piezo-resistance RV5 and circuit can be separated, make piezo-resistance RV5 almost No leakage electric current.Transient Suppression Diode TVS3 plays pressure stabilization function, the high impedance of two interpolars becomes Low ESR, absorbs the surge power up to thousands of watts, makes the voltage clamp of two interpolars in about 900V, thus to lightning wave, overvoltage and harmonic absorption or release, make circuit working safer, stable.
The utility model carries out by zero sequence current mutual inductor LA the leakage current gathered strong and is converted into weak current, the input being entered amplifier chip U2 by resistance R10 is amplified, through diode D5, resistance R12, voltage-stabiliser tube D7, voltage stabilizing and filtering are carried out to signal, thus gather leakage current.
It is weak current that the utility model is undertaken gathering by strong current conversion by current transformer A, another input being input to amplifier chip U2 by resistance R35 is amplified, through diode D4, resistance R7, voltage-stabiliser tube D6, voltage stabilizing and filtering are being carried out to signal, thus gathering electric current.
The utility model has absorption and the effect of releasing by piezo-resistance, discharge tube, Transient Suppression Diode to lightning wave; thus available protecting zero line N, live wire L, ground wire PE, circuit can be run normally, the utility model components and parts are few; structure structure is simple, and cost is low.The utility model gathers electric current, leakage current by zero sequence current mutual inductor LA, resistance R10, amplifier chip U2, voltage-stabiliser tube D7, current transformer A, resistance R35, amplifier chip U2, diode D4, resistance R7, voltage-stabiliser tube D6.
It should be noted that above what enumerate is only a kind of specific embodiment of the present utility model.Obviously, the utility model is not limited to above embodiment, can also have many distortion.
In a word, all distortion that those of ordinary skill in the art can directly derive from content disclosed in the utility model or associate, all should think protection range of the present utility model.
Claims (2)
1. a lightning protection circuit, it is characterized in that, comprise discharge tube RV1, piezo-resistance RV2, Transient Suppression Diode TVS1, discharge tube RV4, piezo-resistance RV3, Transient Suppression Diode TVS2, discharge tube RV6, piezo-resistance RV5, Transient Suppression Diode TVS3, after described discharge tube RV1 connects with piezo-resistance RV2, in parallel with Transient Suppression Diode TVS1, the two ends of described Transient Suppression Diode TVS1 are connected across between live wire L and zero line N, described discharge tube RV4, after piezo-resistance RV3 series connection, in parallel with Transient Suppression Diode TVS2, between the two ends cross-over connection live wire L of described Transient Suppression Diode TVS2 and ground wire PE, described discharge tube RV6, after piezo-resistance RV5 series connection, in parallel with Transient Suppression Diode TVS3, between the two ends cross-over connection zero line N of described Transient Suppression Diode TVS3 and ground wire PE.
2. a kind of lightning protection circuit according to claim 1, is characterized in that, also comprise zero sequence current mutual inductor LA, resistance R10, amplifier chip U2, voltage-stabiliser tube D7, current transformer A, resistance R35, amplifier chip U2, diode D4, resistance R7, voltage-stabiliser tube D6, diode D5, resistance R12, described live wire L and zero line N is through zero sequence current mutual inductor LA, the output of described zero sequence current mutual inductor LA is input to an input of amplifier chip U2 by resistance R10, an output of described amplifier chip U2 connects diode D5, one end of described diode D5 contact resistance R12, the other end of described resistance R12 connects earth signal by voltage-stabiliser tube D7, described live wire L is through current transformer A, the output of described current transformer A is input to another input of amplifier chip U2 by resistance R35, another output of described amplifier chip U2 connects the positive pole of diode D4, one end of the negative pole contact resistance R7 of described diode D4, the other end of described resistance R7 also connects earth signal by voltage-stabiliser tube D6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420522803.9U CN204144939U (en) | 2014-09-12 | 2014-09-12 | A kind of lightning protection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420522803.9U CN204144939U (en) | 2014-09-12 | 2014-09-12 | A kind of lightning protection circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204144939U true CN204144939U (en) | 2015-02-04 |
Family
ID=52421604
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420522803.9U Expired - Fee Related CN204144939U (en) | 2014-09-12 | 2014-09-12 | A kind of lightning protection circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204144939U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117410951A (en) * | 2023-10-31 | 2024-01-16 | 云南电力试验研究院(集团)有限公司 | Lightning protection device and method for residual current circuit breaker |
-
2014
- 2014-09-12 CN CN201420522803.9U patent/CN204144939U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117410951A (en) * | 2023-10-31 | 2024-01-16 | 云南电力试验研究院(集团)有限公司 | Lightning protection device and method for residual current circuit breaker |
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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: 20150204 Termination date: 20170912 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |