CN202797960U - Lightening protection device of grounding-free broadband switch with equipotential connection - Google Patents
Lightening protection device of grounding-free broadband switch with equipotential connection Download PDFInfo
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- CN202797960U CN202797960U CN 201220400355 CN201220400355U CN202797960U CN 202797960 U CN202797960 U CN 202797960U CN 201220400355 CN201220400355 CN 201220400355 CN 201220400355 U CN201220400355 U CN 201220400355U CN 202797960 U CN202797960 U CN 202797960U
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Abstract
The utility model discloses a lightening protection device of a grounding-free broadband switch with equipotential connection. The lightening protection device comprises a power supply module and a network port end protection module. The network port end protection module comprises at least one tripolar gas discharge tube, wherein two outer-side electrodes of the triode gas discharge tube are respectively connected to network port end interfaces (RJ45). The power supply protection module comprises a single-phase balance circuit composed of 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 network port of the broadband switch to be designed into equipotential connection, and solves problems of common mode and differential mode protection of a signal incoming wire side and the power supply of the switch when no local grounding points are provided.
Description
Technical field
The utility model relates to the wide-band exchange unit in the Internet.
Background technology
The wide-band exchange unit lightning protection of traditional approach mainly relies on the discharge tube of the wide-band exchange unit grid line inlet wire side that arranges in the terminal equipment and isolating transformer to carry out respectively differential mode, common mode protection.General effective lightning protection measures is direct ground connection now, and in the user Internet access broadband, for each wide-band exchange unit goes to carry out special ground connection work, its difficulty and cost are very large.So how the lightning protection capability of simple and effective raising wide-band exchange unit just seems very important.
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' wide-band exchange unit, and a kind of apparatus for preventing thunderbolt of exempting from the ground connection wide-band exchange unit is provided.
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 wide-band exchange unit apparatus for preventing thunderbolt; comprise power source protective module and network interface end protection module; network interface end protection module comprises at least one three utmost point gas discharge tube; the two poles of the earth, the outside of three utmost point gas discharge tubes are connected on respectively on the network interface end interface RJ45; 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 interpoles.
Described network interface end protection module includes two three utmost point gas discharge tubes; three utmost point gas discharge tube G2 and three utmost point gas discharge tube G3; the two poles of the earth, the outside of three utmost point gas discharge tube G2 and three utmost point gas discharge tube G3 are connected on respectively on the network interface end interface RJ45; the pin of gas discharge tube G1 is connected between two piezo-resistances, and another pin connects respectively the interpole of three utmost point gas discharge tube G2 and three utmost point gas discharge tube G3.
Described network interface end protection module also comprises two differential mode protective circuits, differential mode protective circuit 1 is comprised of resistance R 1, resistance R 2 and solid discharging tube SAD1, resistance R 1, R2 are connected in respectively on the network interface end interface RJ45, three utmost point gas discharge tube G2 are attempted by resistance R 1, R2 front end, and solid discharging tube SAD1 is attempted by resistance R 1, R2 rear end; Differential mode protective circuit 2 is comprised of resistance R 3, resistance R 4 and solid discharging tube SAD2, and resistance R 3, R4 are connected in respectively on the network interface end interface RJ45, and three utmost point gas discharge tube G3 are attempted by resistance R 3, R4 front end, and solid discharging tube SAD2 is attempted by resistance R 3, R4 rear end.
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 wide-band exchange unit, and power port becomes equipotential to be connected with the network interface port design.Solved this locality without the earth point situation under, the common and different mode protection question of network interface end inlet wire side and power supply has promoted the common and different mode protective capacities, effectively protects wide-band exchange unit not to be damaged.
Description of drawings
Fig. 1 is schematic diagram of the present utility model.
Embodiment
Such as Fig. 1, a kind of equipotential connects exempts from ground connection wide-band exchange unit apparatus for preventing thunderbolt, comprise power source protective module and network interface end protection module, network interface end protection module comprises at least one three utmost point gas discharge tube, it is fixed that the quantity of three utmost point gas discharge tubes is come according to the quantity of netting twine, present embodiment has two three utmost point gas discharge tubes, three utmost point gas discharge tube G2 and three utmost point gas discharge tube G3, the two poles of the earth, the outside of three utmost point gas discharge tube G2 and three utmost point gas discharge tube G3 all are connected on respectively on the network interface end interface RJ45, this forms two first order differential mode protective circuits, also have two second level differential mode protective circuits, differential mode protective circuit 1 is by resistance R 1, resistance R 2 and solid discharging tube SAD1 form, its corresponding three utmost point gas discharge tube G2, resistance R 1, R2 is connected in respectively on the network interface end interface RJ45, three utmost point gas discharge tube G2 are attempted by resistance R 1, the R2 front end, solid discharging tube SAD1 is attempted by resistance R 1, the R2 rear end; Differential mode protective circuit 2 is comprised of resistance R 3, resistance R 4 and solid discharging tube SAD2; its corresponding three utmost point gas discharge tube G3; resistance R 3, R4 are connected in respectively on the network interface end interface RJ45; three utmost point gas discharge tube G3 are attempted by resistance R 3, R4 front end, and solid discharging tube SAD2 is attempted by resistance R 3, R4 rear end.
Two-stage differential mode protective circuit is carried out clamper to the signal input part voltage of wide-band exchange unit, 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 respectively three utmost point gas discharge tube G2 and three utmost point gas discharge tube G3 interpoles.Gas discharge tube G1 and three utmost point gas discharge tube G2 and three utmost point gas discharge tube G3 form the common mode protective circuit, realize that the equipotential between the network signal inlet wire of power line and wide-band exchange unit 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 network interface end protection module between wide-band exchange unit and network input line; between wide-band exchange unit and power module, access power source protective module; the two poles of the earth, the outside of three utmost point gas discharge tube G2 and three utmost point gas discharge tube G3 are connected on respectively on the network interface end interface RJ45; the pin of gas discharge tube G1 is connected between two piezo-resistances, and another pin connects respectively the interpole of three utmost point gas discharge tube G2 and three utmost point gas discharge tube G3.
When not running into thunderbolt; wide-band exchange unit normally uses; the signal of network interface end is equivalent to directly skip network interface end protection module; three utmost point gas discharge tube G2 and solid discharging tube SAD1; and three utmost point gas discharge tube G3 and solid discharging tube SAD2 all be in open-circuit condition; signal directly passes through resistance R 1, R2 or resistance R 3, R4 out; enter in the wide-band exchange unit; this moment three utmost point gas discharge tube G2 and solid discharging tube SAD1, and three utmost point gas discharge tube G3 and solid discharging tube SAD2 play the effect of differential mode protection.
Power end is to skip power source protective module equally, and wide-band exchange unit 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, three utmost point gas discharge tube G3 and gas discharge tube G1 have been punctured, so that three utmost point gas discharge tube G2, three utmost point gas discharge tube G3 and gas discharge tube G1 conducting, thunder-strike current is just by three utmost point gas discharge tube G2, gas discharge tube G1, piezo-resistance TMOV1 or piezo-resistance TMOV2, and by three utmost point gas discharge tube G3, gas discharge tube G1, piezo-resistance TMOV1 or piezo-resistance TMOV2, release to the neutral earthing end of far-end power transformer.
The utility model technology in use need not wide-band exchange unit is carried out special grounding construction; but end of incoming cables and the power end of wide-band exchange unit all coupled together by gas discharge tube; carry out the common mode protection; realize that power line is connected with equipotential between wide-band exchange unit 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.
Claims (4)
1. an equipotential connects exempts from ground connection wide-band exchange unit apparatus for preventing thunderbolt; it is characterized in that; comprise power source protective module and network interface end protection module; network interface end protection module comprises at least one three utmost point gas discharge tube; the two poles of the earth, the outside of three utmost point gas discharge tubes are connected on respectively on the network interface end interface RJ45; 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 interpoles.
2. a kind of equipotential according to claim 1 connects exempts from ground connection wide-band exchange unit apparatus for preventing thunderbolt; it is characterized in that; described network interface end protection module includes two three utmost point gas discharge tubes; three utmost point gas discharge tube G2 and three utmost point gas discharge tube G3; the two poles of the earth, the outside of three utmost point gas discharge tube G2 and three utmost point gas discharge tube G3 are connected on respectively on the network interface end interface RJ45; the pin of gas discharge tube G1 is connected between two piezo-resistances, and another pin connects respectively the interpole of three utmost point gas discharge tube G2 and three utmost point gas discharge tube G3.
3. a kind of equipotential according to claim 2 connects exempts from ground connection wide-band exchange unit apparatus for preventing thunderbolt, it is characterized in that, described network interface end protection module also comprises two differential mode protective circuits, differential mode protective circuit 1 is comprised of resistance R 1, resistance R 2 and solid discharging tube SAD1, resistance R 1, R2 are connected in respectively on the network interface end interface RJ45, three utmost point gas discharge tube G2 are attempted by resistance R 1, R2 front end, and solid discharging tube SAD1 is attempted by resistance R 1, R2 rear end; Differential mode protective circuit 2 is comprised of resistance R 3, resistance R 4 and solid discharging tube SAD2, and resistance R 3, R4 are connected in respectively on the network interface end interface RJ45, and three utmost point gas discharge tube G3 are attempted by resistance R 3, R4 front end, and solid discharging tube SAD2 is attempted by resistance R 3, R4 rear end.
4. a kind of equipotential according to claim 3 connects exempts from ground connection wide-band exchange unit 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 201220400355 CN202797960U (en) | 2012-08-13 | 2012-08-13 | Lightening protection device of grounding-free broadband switch with equipotential connection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220400355 CN202797960U (en) | 2012-08-13 | 2012-08-13 | Lightening protection device of grounding-free broadband switch with equipotential connection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202797960U true CN202797960U (en) | 2013-03-13 |
Family
ID=47825136
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220400355 Expired - Lifetime CN202797960U (en) | 2012-08-13 | 2012-08-13 | Lightening protection device of grounding-free broadband switch with equipotential connection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202797960U (en) |
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2012
- 2012-08-13 CN CN 201220400355 patent/CN202797960U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130313 |