CN202797961U - Lightening protection device of grounding-free communication device with equipotential connection - Google Patents
Lightening protection device of grounding-free communication device with equipotential connection Download PDFInfo
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- CN202797961U CN202797961U CN 201220400457 CN201220400457U CN202797961U CN 202797961 U CN202797961 U CN 202797961U CN 201220400457 CN201220400457 CN 201220400457 CN 201220400457 U CN201220400457 U CN 201220400457U CN 202797961 U CN202797961 U CN 202797961U
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- gas discharge
- discharge tube
- resistance
- signal end
- piezo
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Abstract
The utility model discloses a lightening protection device of a grounding-free communication device with equipotential connection. A signal end protection module is connected between the communication device and a signal line, and a power supply protection module is connected between the communication device and a power supply module. The signal end protection device comprises a tripolar gas discharge tube (G2), where two outer-side poles of the tripolar gas discharge tube (G2) are respectively connected to signal end interfaces. The power supply protection module comprises a variostor (TMOV1), a variostor (TMOV2) and a gas discharge tube (G1), wherein the variostors TMOV1 and TMOV2 are connected in series and then are connected between a phase line (L) and a neutral line (N) of a power supply module; one pin of the gas discharge tube (G1) is connected between the two variostors, and the other pin of the gas discharge tube (G1) is connected with a middle pole of the tripolar gas discharge tube. The lightening protection device enables a power supply port and a signal port of the communication device to be designed into equiopotential connection, and solves problems of common mode and differential mode protection of a signal incoming wire side and the power supply of the communication device when no local grounding points are provided.
Description
Technical field
The utility model relates to the lightning protection of the communicator, particularly communicator of signal transmission in the Internet, conversion.
Background technology
The ADSL terminal lightning protection of traditional approach mainly relies on the discharge tube of the ADSL telephone wire inlet wire side that arranges in the terminal equipment and isolating transformer to carry out respectively differential mode, common mode protection.From ADSL terminal practical using result, thunderstorm later terminal damage quantity is multiplied, and the broken by lightning ratio has reached protects more than 30% of outer maintenance capacity.Economize fixed network operator's maintaining unit incomplete statistics according to certain, ADSL terminal in October, 2011 ~ 2012 broken by lightning number in year March is 37563 after going out to protect.General effective lightning protection measures is direct ground connection now, in the user Internet access broadband, goes to carry out special ground connection work for each ADSL terminal, and its difficulty and cost are very large.So how the simple and effective lightning protection capability that improves the ADSL terminal just seems very important.Equally for also having identical Lightning Protection with the similar communicator of ADSL terminal.
The utility model content
The purpose of this utility model is to suffer the problem of lightning damage in order easy, economical, effectively to have solved numerous broadband users' communicator, the apparatus for preventing thunderbolt of exempting from the ground connection communicator that provides a kind of equipotential to connect.
In order to achieve the above object, the utility model is by the following technical solutions:
A kind of equipotential connects exempts from ground connection communicator apparatus for preventing thunderbolt; comprise power source protective module and signal end protection module; the signal end protection module comprises three utmost point gas discharge tube G2; the two poles of the earth, the outside of three utmost point gas discharge tube G2 are connected on respectively on the signal end interface RJ11; described power source protective module comprises by piezo-resistance TMOV1; the monophase equilibrium circuit that piezo-resistance TMOV2 and gas discharge tube G1 form; be attempted by between the phase line L and neutral line N of power module after piezo-resistance TMOV1 and the piezo-resistance TMOV2 series connection; the pin of gas discharge tube G1 is connected between two piezo-resistances, and another pin connects three utmost point gas discharge tube G2 interpoles.
Described signal end protection module also comprises the differential mode protective circuit; the differential mode protective circuit is comprised of resistance R 1, resistance R 2 and solid discharging tube SAD; resistance R 1, R2 are connected in respectively on the signal end interface RJ11; three utmost point gas discharge tube G2 are attempted by resistance R 1, R2 front end, and solid discharging tube SAD is attempted by resistance R 1, R2 rear end.
Described communicator is the ADSL terminal, and described signal end protection module is the telephone wire protection module, and described signal end interface RJ11 is telephone line interface RJ11.
Described power source protective module also comprises the working indicating that is comprised of resistance R 0, diode D1, light-emitting diode L1 and inductance L 0.
Equipment of the present utility model can form modular guard to communicator, and power port is designed to equipotential with signal port and is connected.Solved this locality without the earth point situation under, the common and different mode protection question of signal end inlet wire side and power supply has promoted the common and different mode protective capacities.The telephone wire side common mode protective capacities of ADSL terminal is promoted to more than the 20KV, and through-current capacity is greater than 5KA, and the output residual voltage is lower than 1.5KV, effectively protects the ADSL terminal not to be damaged.
Description of drawings
Fig. 1 is the schematic diagram of the utility model embodiment 1.
Fig. 2 is the schematic diagram of the utility model embodiment 2.
Embodiment
Embodiment 1
Such as Fig. 1; a kind of equipotential connects exempts from ground connection communicator apparatus for preventing thunderbolt; comprise power source protective module and signal end protection module; the signal end protection module comprises three utmost point gas discharge tube G2; the two poles of the earth, the outside of three utmost point gas discharge tube G2 are connected on respectively on the signal end interface RJ11; this forms first order differential mode protective circuit; also has second level differential mode protective circuit; by resistance R 1; resistance R 2 and solid discharging tube SAD form; resistance R 1; R2 is connected in respectively on the signal end interface RJ11; three utmost point gas discharge tube G2 are attempted by resistance R 1; the R2 front end, solid discharging tube SAD is attempted by resistance R 1; the R2 rear end.Two-stage differential mode protective circuit is carried out clamper to the signal input part voltage of communicator, plays a protective role.
Power source protective module comprises the monophase equilibrium circuit that is comprised of piezo-resistance TMOV1, piezo-resistance TMOV2 and gas discharge tube G1; be attempted by between the phase line L and neutral line N of power module after piezo-resistance TMOV1 and the piezo-resistance TMOV2 series connection; the pin of gas discharge tube G1 is connected between two piezo-resistances, and another pin connects three utmost point gas discharge tube G2 interpoles.Gas discharge tube G1 and three utmost point gas discharge tube G2 form the common mode protective circuit, realize that the equipotential between the signal inlet wire of power line and communicator is connected.The common mode thunder-strike current is released to the neutral earthing end of far-end power transformer by gas discharge tube G1, piezo-resistance TMOV1 or the piezo-resistance TMOV2 of power source protective module like this.
Access signal end protection module between communicator and signal input line; between communicator and power module, access power source protective module; the signal end protection module comprises three utmost point gas discharge tube G2; the two poles of the earth, the outside of three utmost point gas discharge tube G2 are connected on respectively on the signal end interface RJ11; power source protective module comprises by piezo-resistance TMOV1; the monophase equilibrium circuit that piezo-resistance TMOV2 and gas discharge tube G1 form; be attempted by between the phase line L and neutral line N of power module after piezo-resistance TMOV1 and the piezo-resistance TMOV2 series connection; the pin of gas discharge tube G1 is connected between two piezo-resistances, and another pin connects three utmost point gas discharge tube G2 interpoles.
When not running into thunderbolt; communicator normally uses; the signal of signal end is equivalent to direct bypass signal end protection module; three utmost point gas discharge tube G2 and solid discharging tube SAD are in open-circuit condition; signal directly passes through resistance R 1, R2 out; enter in the communicator, this moment, three utmost point gas discharge tube G2 and solid discharging tube SAD played the effect of differential mode protection.
Power end is to skip power source protective module equally, and communicator is directly received on the 220V power supply by power supply adaptor.This moment, gas discharge tube G1 was in open-circuit condition.
When suffering from thunderbolt, thunderbolt voltage is excessive, three utmost point gas discharge tube G2 and gas discharge tube G1 have been punctured, so that three utmost point gas discharge tube G2 and gas discharge tube G1 conducting, thunder-strike current just by three utmost point gas discharge tube G2, gas discharge tube G1, piezo-resistance TMOV1 or piezo-resistance TMOV2, is released to the neutral earthing end of far-end power transformer.
Present embodiment in use need not communicator is carried out special grounding construction; but end of incoming cables and the power end of communicator all coupled together by gas discharge tube; carry out the common mode protection; realize that power line is connected with equipotential between communicator signal inlet wire; and all be connected on the neutral earthing end of far-end power transformer; like this no matter when being power end or signal end of incoming cables generation thunder-strike current; can release by the earth terminal of far-end power transformer smoothly and drain, thereby play effective protective effect.
In addition, power source protective module also comprises the working indicating that is comprised of resistance R 0, diode D1, light-emitting diode L1 and inductance L 0.Under normal circumstances, the light-emitting diode L1 of working indicating is bright, when breaking down, piezo-resistance TMOV1 and piezo-resistance TMOV2 lost efficacy, and electric current no longer passes through light-emitting diode L1, and light-emitting diode L1 does not just work, represent that this thunder resisting equipment lost efficacy, need to change.
Embodiment 2
Such as Fig. 2, change communicator into the ADSL terminal, signal input line is telephone wire, and the signal end protection module is the telephone wire protection module, and signal end interface RJ11 is telephone line interface RJ1.All the other whole principles are identical with embodiment 1 with structure.
Access telephone wire protection module between ADSL terminal and telephone wire; between ADSL terminal and power module, access power source protective module; the telephone wire protection module comprises three utmost point gas discharge tube G2; the two poles of the earth, the outside of three utmost point gas discharge tube G2 are connected on respectively on the telephone line interface RJ11; power source protective module comprises by piezo-resistance TMOV1; the monophase equilibrium circuit that piezo-resistance TMOV2 and gas discharge tube G1 form; be attempted by between the phase line L and neutral line N of power module after piezo-resistance TMOV1 and the piezo-resistance TMOV2 series connection; the pin of gas discharge tube G1 is connected between two piezo-resistances, and another pin connects three utmost point gas discharge tube G2 interpoles.
When not running into thunderbolt; the ADSL terminal is normally used; the signal of phone line end is equivalent to directly skip the telephone wire protection module; three utmost point gas discharge tube G2 and solid discharging tube SAD are in open-circuit condition; signal directly passes through resistance R 1, R2 out; enter in the ADSL terminal, this moment, three utmost point gas discharge tube G2 and solid discharging tube SAD played the effect of differential mode protection.
Power end is to skip power source protective module equally, and the ADSL terminal is directly received on the 220V power supply by power supply adaptor.This moment, gas discharge tube G1 was in open-circuit condition.
When suffering from thunderbolt, thunderbolt voltage is excessive, three utmost point gas discharge tube G2 and gas discharge tube G1 have been punctured, so that three utmost point gas discharge tube G2 and gas discharge tube G1 conducting, thunder-strike current just by three utmost point gas discharge tube G2, gas discharge tube G1, piezo-resistance TMOV1 or piezo-resistance TMOV2, is released to the neutral earthing end of far-end power transformer.
Claims (4)
1. an equipotential connects exempts from ground connection communicator apparatus for preventing thunderbolt; it is characterized in that; comprise power source protective module and signal end protection module; the signal end protection module comprises three utmost point gas discharge tube G2; the two poles of the earth, the outside of three utmost point gas discharge tube G2 are connected on respectively on the signal end interface RJ11; described power source protective module comprises by piezo-resistance TMOV1; the monophase equilibrium circuit that piezo-resistance TMOV2 and gas discharge tube G1 form; be attempted by between the phase line L and neutral line N of power module after piezo-resistance TMOV1 and the piezo-resistance TMOV2 series connection; the pin of gas discharge tube G1 is connected between two piezo-resistances, and another pin connects three utmost point gas discharge tube G2 interpoles.
2. a kind of equipotential according to claim 1 connects exempts from ground connection communicator apparatus for preventing thunderbolt; it is characterized in that; described signal end protection module also comprises the differential mode protective circuit; the differential mode protective circuit is comprised of resistance R 1, resistance R 2 and solid discharging tube SAD; resistance R 1, R2 are connected in respectively on the signal end interface RJ11; three utmost point gas discharge tube G2 are attempted by resistance R 1, R2 front end, and solid discharging tube SAD is attempted by resistance R 1, R2 rear end.
3. a kind of equipotential according to claim 1 and 2 connects exempts from ground connection communicator apparatus for preventing thunderbolt; it is characterized in that; described communicator is the ADSL terminal, and described signal end protection module is the telephone wire protection module, and described signal end interface RJ11 is telephone line interface RJ11.
4. a kind of equipotential according to claim 3 connects exempts from ground connection communicator apparatus for preventing thunderbolt, it is characterized in that described power source protective module also comprises the working indicating that is comprised of resistance R 0, diode D1, light-emitting diode L1 and inductance L 0.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220400457 CN202797961U (en) | 2012-07-27 | 2012-08-13 | Lightening protection device of grounding-free communication device with equipotential connection |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220369377.0 | 2012-07-27 | ||
| CN201220369377 | 2012-07-27 | ||
| CN 201220400457 CN202797961U (en) | 2012-07-27 | 2012-08-13 | Lightening protection device of grounding-free communication device with equipotential connection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202797961U true CN202797961U (en) | 2013-03-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220400457 Withdrawn - After Issue CN202797961U (en) | 2012-07-27 | 2012-08-13 | Lightening protection device of grounding-free communication device with equipotential connection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202797961U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102761118A (en) * | 2012-07-27 | 2012-10-31 | 中国电信集团浙江省电信公司 | Lightning protection method and lightning protection device of ground-connection-free communication device with equipotential connection |
-
2012
- 2012-08-13 CN CN 201220400457 patent/CN202797961U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102761118A (en) * | 2012-07-27 | 2012-10-31 | 中国电信集团浙江省电信公司 | Lightning protection method and lightning protection device of ground-connection-free communication device with equipotential connection |
| CN102761118B (en) * | 2012-07-27 | 2015-09-16 | 中国电信集团浙江省电信公司 | A kind of lightning protection method and apparatus of exempting from ground connection communicator of equipotential link |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130313 Effective date of abandoning: 20150916 |
|
| RGAV | Abandon patent right to avoid regrant |