CN2689416Y - Lightening-proof over voltage protector for telephone line interface end in telephone communicating system - Google Patents
Lightening-proof over voltage protector for telephone line interface end in telephone communicating system Download PDFInfo
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- CN2689416Y CN2689416Y CN 200420041679 CN200420041679U CN2689416Y CN 2689416 Y CN2689416 Y CN 2689416Y CN 200420041679 CN200420041679 CN 200420041679 CN 200420041679 U CN200420041679 U CN 200420041679U CN 2689416 Y CN2689416 Y CN 2689416Y
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- lightning
- telephone line
- line interface
- interface end
- telephone
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Abstract
The utility model relates to a lightning-proof overvoltage protector for telephone line interface end in telephone communicating system, which is a lightning-proof device comprising a gas discharge tube F and a voltage dependent resistor Rv which are connected in parallel. The parallel connection of the two devices can improve the response speed of the overvoltage protector and also avoid the performance degradation of the voltage dependent resistor because of continuous and great passing current, prolonging the service life of the voltage dependent resistor. In addition, the protector has big insulation resistance and small parasitic capacitance; the normal work of the telephone line is not influenced when the protector is connected to the telephone line interface end, and thereby the task of the lightning proof overvoltage protection is better finished.
Description
Technical field
The utility model relates to the overvoltage protection device that a kind of anti-lightning strike surge current impacts, and specifically, it is a kind of lightning protection overvoltage protection device that is used for telephonic communication system telephone line interface end.
Background technology
In telephonic communication system, total equipment such as main frame, branch wire module that be unable to do without, a lot of telephone line interfaces are arranged in these equipment, these telephone line interfaces are easy to be subjected to the impact of lightning surge electric current, if do not protected, probably cause the instantaneous interruption of communication network, thereby influence the operate as normal of telephonic communication system.In prior art, yet there are no the people and this is proposed safeguard procedures.
The utility model content
The purpose of this utility model is at the problem in the prior art; at first provide a kind of lightning protection overvoltage protection device that is used for telephonic communication system telephone line interface end; in order to eliminate of the influence of lightning surge electric current to telephonic communication system; next is to divide the mounting structure of using on the wire module in a kind of phone coupling box for this protector provides, and divides on the wire module to be easily installed in rotary clamp type.
For achieving the above object, solution of the present utility model is as follows:
It is a lightning-arrest device that is made of gas discharge tube and piezo-resistance parallel connection.
Above-mentioned lightning-arrest device is encapsulated in the cuboid insulation crust in pairs, and this parallel connected end to lightning-arrest device is drawn by two pairs of shape of a hoof electrodes respectively, and these two pairs of shape of a hoof electrodes are outwards arranged along the horizontal long axis axial symmetry opening of cuboid insulation crust.
The gas discharge tube that the utility model is selected for use is a clearance-type lightning protection component; its discharge capacity is big; parasitic capacitance is little; can play the effect of release thunder and lightning transient state and deboost; but its response speed is slow (generally in the ms level); for improving its response speed; piezo-resistance in parallel on this gas discharge tube; the response speed of piezo-resistance more faster than the gas discharge tube (generally in the ns level); but it is unsuitable for continuing by big electric current (continuing by easily making himself performance degradation behind the big electric current); therefore; after two device parallel connections, when running into the lightning surge impact, piezo-resistance can be moved and earial drainage earlier; gas discharge tube moves and forms shunting with piezo-resistance subsequently; thereby alleviate the earial drainage pressure of piezo-resistance immediately, like this, both can improve the response speed of device; protect the performance of piezo-resistance again, prolonged the useful life of device.Simultaneously, the parallel connection of above-mentioned two devices combination, its insulation resistance is big, and parasitic capacitance is little, when being connected on the telephone wire end interface, can not influence the operate as normal of telephone line, thereby has finished the task of lightning protection overvoltage protection preferably.Moreover the utility model is installed in the structure of dividing in the phone coupling box on the wire module for energy of this protector design again more conveniently, makes that it is easy for installation, it is reliable to connect.
Description of drawings
Fig. 1, electrical schematic diagram of the present utility model.
Fig. 2, the utility model are connected on the circuit theory diagrams on the branch wire module.
Fig. 3, the utility model are used for the structural representation on the branch wire module.
Fig. 4, the utility model are installed in the structural representation on the branch wire module.
Embodiment
Describe structure of the present utility model and operation principle in detail according to embodiment below.
Referring to Fig. 1,2, to divide the structure on the wire module be the explanation that example is carried out structure and principle to this example to be installed in the phone coupling box rotary clamp type.This lightning protection overvoltage protection device is a lightning-arrest device 1 that is made of gas discharge tube F and piezo-resistance Rv parallel connection; their parallel end connection (a end hold with b between) on phone divides user side interface on the wire module, it can carry out the lightning protection overvoltage protection to telephone set, facsimile machine and the apparatus such as computer of user side.Through test, the operate as normal signal amplitude of telephone wire is between 110V～170V, and lightning impulse current is generally about 5KA.According to this test, choose the load voltage value of gas discharge tube and the pressure sensitive voltage value of piezo-resistance effectively and can play the effect of lightning protection overvoltage protection.For example, choosing load voltage value and pressure sensitive voltage value is 230V, when lightning impulse, when the voltage of each the user interface end on the branch wire module 2 surpasses 230V, piezo-resistance Rv and gas discharge tube F be earial drainage successively, each user interface terminal voltage is limited in below the 230V, plays the effect of lightning protection overvoltage protection; When the telephone wire operate as normal, because the insulation resistance of the device of should taking shelter from the thunder is big, parasitic capacitance is little, is equivalent to the interface end open circuit, so do not influence the operate as normal of telephone wire.Show through test, when the pressure sensitive voltage value of the load voltage value of gas discharge tube and piezo-resistance is selected same rated value, gas discharge tube F might be failure to actuate when overvoltage, cause the situation of finishing earial drainage by piezo-resistance Rv separately, this will damage piezo-resistance, so, the pressure sensitive voltage value is slightly higher like the load voltage value of gas discharge tube, for example: the pressure sensitive voltage value can exceed about the about 10V of load voltage value of gas discharge tube and gets final product, like this, in the time of just can guaranteeing the action of piezo-resistance earial drainage, gas discharge tube is earial drainage action subsequently also.
Referring to Fig. 3; divide on the wire module 2 in order to make this protector be installed in rotary clamp type easily; this protector adopts a cuboid insulation crust 3; the described lightning-arrest device 1 of a pair of Fig. 1 of encapsulation in shell 3; and their parallel connected end is drawn by two pairs of shape of a hoof electrodes 4,5, and these two pairs of shape of a hoof electrodes are outwards arranged along the horizontal long axis axial symmetry opening of cuboid insulation crust 3.
Referring to Fig. 2,4, adopting structure among Fig. 3 can make two lightning-arrest devices 1 just be installed in rotary clamp type divides on two relative user side interfaces on the wire module 2, make these two relative user side interfaces all connect a lightning-arrest device 1 respectively, adopt shape of a hoof electrode to be connected, can make easy for installation, connection reliably with interface node (a, b point).
The utility model is not limited to be used on the branch wire module, can be used for the lightning protection overvoltage protection of many telephone line interface ends of telephonic communication system.
Claims (2)
1, a kind of lightning protection overvoltage protection device that is used for telephonic communication system telephone line interface end is characterized in that: it is a lightning-arrest device (1) that is made of gas discharge tube F and piezo-resistance Rv parallel connection.
2, the lightning protection overvoltage protection device that is used for telephonic communication system telephone line interface end according to claim 1; it is characterized in that: described lightning-arrest device is encapsulated in the cuboid insulation crust (3) in pairs; should draw by two pairs of shape of a hoof electrodes (4), (5) respectively the parallel connected end of lightning-arrest device, and these two pairs of shape of a hoof electrodes are outwards arranged along the horizontal long axis axial symmetry opening of cuboid insulation crust (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420041679 CN2689416Y (en) | 2004-03-22 | 2004-03-22 | Lightening-proof over voltage protector for telephone line interface end in telephone communicating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420041679 CN2689416Y (en) | 2004-03-22 | 2004-03-22 | Lightening-proof over voltage protector for telephone line interface end in telephone communicating system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2689416Y true CN2689416Y (en) | 2005-03-30 |
Family
ID=34671408
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420041679 Expired - Fee Related CN2689416Y (en) | 2004-03-22 | 2004-03-22 | Lightening-proof over voltage protector for telephone line interface end in telephone communicating system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2689416Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102957141A (en) * | 2011-08-31 | 2013-03-06 | 江苏怡丰通信设备有限公司 | Lightning protection circuit of telecommunication terminal equipment |
| CN103001201A (en) * | 2011-09-13 | 2013-03-27 | 黄岩 | Method and device for suppressing high-energy surge |
| CN103069788A (en) * | 2010-08-26 | 2013-04-24 | 佳能株式会社 | Facsimile communication apparatus and control method thereof |
| CN103138251A (en) * | 2011-11-24 | 2013-06-05 | 瑞昱半导体股份有限公司 | Network communication device with instant energy protective capacity and printed circuit board thereof |
-
2004
- 2004-03-22 CN CN 200420041679 patent/CN2689416Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103069788A (en) * | 2010-08-26 | 2013-04-24 | 佳能株式会社 | Facsimile communication apparatus and control method thereof |
| CN103069788B (en) * | 2010-08-26 | 2015-09-02 | 佳能株式会社 | Facsimile communication equipment and control method thereof |
| CN102957141A (en) * | 2011-08-31 | 2013-03-06 | 江苏怡丰通信设备有限公司 | Lightning protection circuit of telecommunication terminal equipment |
| CN103001201A (en) * | 2011-09-13 | 2013-03-27 | 黄岩 | Method and device for suppressing high-energy surge |
| CN103138251A (en) * | 2011-11-24 | 2013-06-05 | 瑞昱半导体股份有限公司 | Network communication device with instant energy protective capacity and printed circuit board thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |