CN203707770U - Communication cable lightning protection device - Google Patents
Communication cable lightning protection device Download PDFInfo
- Publication number
- CN203707770U CN203707770U CN201420065218.0U CN201420065218U CN203707770U CN 203707770 U CN203707770 U CN 203707770U CN 201420065218 U CN201420065218 U CN 201420065218U CN 203707770 U CN203707770 U CN 203707770U
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- CN
- China
- Prior art keywords
- lightning protection
- tvs
- protection tube
- ted485
- thunder 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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- Emergency Protection Circuit Devices (AREA)
Abstract
The utility model relates to a communication cable lightning protection device. The device is characterized in that a lightning protection module comprises a first-level lightning protection circuit and a second-level lightning protection circuit. The first lightning protection circuit utilizes a TED485 lightning protection tube, and the second lightning protection circuit utilizes a TVS lightning protection tube. FL means the TED485 lightning protection tube, and TS means the TVS lightening protection tube. The connection relations are that positive poles of a TED485 lightning protection tube FL1, a TED485 lightning protection tube FL2, a TVS lightning protection tube TS1 and a TVS lightning protection tube TS3 are connected together and then connected to the ground. The negative poles of the TED485 lightning protection tube FL1 and the TVS lightning protection tube TS1, and a positive pole of a TVS lightning protection tube TS2 are connected together to form a 485A terminal. The negative poles of the TVS lightning protection tube TS2, the TVS lightning protection tube TS3 and the TED485 lightning protection tube FL2 are connected together to form a 485B terminal. The circuit is wholly enclosed in a housing (1) made of PVC materials. The device is in parallel connection with an RS-485 trunk, and the lightning protection module is just connected to the 485 terminals. Capabilities of collective meter reading terminal communication and load carrying are unaffected, capability of inductive thunder resistance is effectively improved, and the terminal is ensured to be operated in a safe and stable manner in thunderstorm seasons.
Description
Technical field
The utility model belongs to electric elements technical field, relates in particular to the connection lightning protection device of a kind of lightning protection for 485 communications, Data Control, data acquisition and signal line and antisurge protection, antistatic protection, anti-overvoltage protection.
Background technology
Lightning discharge causes electromagnetic pulse overvoltage and overcurrent can be passed through the approach destruction signalling arrangements such as power-supply system, signal transmission passage.In the past, lightning rod, lightning arrester etc. have just been installed on building, above lightning protection facility can only prevent that like this direct lightning strike from not going to pot to building, antenna etc., and not ensure that communication equipment is not struck by lightning around, because can not prevent electrostatic induction, the harm of electromagnetic induction to circuit, equipment.
Summary of the invention
The purpose of this utility model is to provide the connection lightning protection device of a kind of lightning protection that can be used for 485 communications, Data Control, data acquisition and signal line and antisurge protection, antistatic protection, anti-overvoltage protection.Realizing the technical scheme that object of the present invention takes is: connection lightning protection device, it is characterized in that: this connection lightning protection device is provided with firsts and seconds two-stage lightning protection circuit, one-level lightning protection circuit adopts TED485 anti-thunder tube to realize, secondary lightning protection circuit adopts TVS anti-thunder tube to realize, wherein, FL is TED485 anti-thunder tube, TS is TVS anti-thunder tube, its annexation is: TED485 anti-thunder tube FL1, TED485 anti-thunder tube FL2, the positive pole of TVS anti-thunder tube TS1 and TVS anti-thunder tube TS3 joins and ground connection, TED485 anti-thunder tube FL1, the positive pole of TVS anti-thunder tube TS1 negative pole and TVS anti-thunder tube TS2 joins for 485A terminals, TVS anti-thunder tube TS2, the negative pole of TVS anti-thunder tube TS3 and TED485 anti-thunder tube FL2 joins for 485B terminals, circuit integrally closed is in the shell of PVC material.
The utility model good airproof performance, there is preventing dust corrosion function, reliability is high, easy for installation, volume is little and lightweight, adopt access RS-485 bus mode in parallel, only lightning-protection module need be connected on 485 terminals, do not affect centralized automatic meter-reading terminal called and load-carrying ability, effectively promote the ability of the anti-induction thunder of terminal, ensured that terminal is at thunderstorm season safe and stable operation.
Brief description of the drawings
Fig. 1 is contour structures schematic diagram of the present utility model;
Fig. 2 is electrical block diagram of the present utility model;
Fig. 3 is the connection diagram of the utility model on communication line.
In figure, 1, shell, 2, ground wire, 3,485A end, 4,485B end; FL is wherein TED485 anti-thunder tube, and TS is TVS anti-thunder tube.
Embodiment
With reference to accompanying drawing, a kind of connection lightning protection device, it is characterized in that: this connection lightning protection device is provided with firsts and seconds two-stage lightning protection circuit, one-level lightning protection circuit adopts TED485 anti-thunder tube to realize, secondary lightning protection circuit adopts TVS anti-thunder tube to realize, wherein, FL is TED485 anti-thunder tube, TS is TVS anti-thunder tube, its annexation is: TED485 anti-thunder tube FL1, TED485 anti-thunder tube FL2, the positive pole of TVS anti-thunder tube TS1 and TVS anti-thunder tube TS3 joins and ground connection, TED485 anti-thunder tube FL1, the positive pole of TVS anti-thunder tube TS1 negative pole and TVS anti-thunder tube TS2 joins for 485A terminals, TVS anti-thunder tube TS2, the negative pole of TVS anti-thunder tube TS3 and TED485 anti-thunder tube FL2 joins for 485B terminals, circuit integrally closed is in the shell 1 of PVC material.
Operation principle of the present utility model is as follows: this connection lightning protection device, and adopt advanced TED485 anti-thunder tube and TVS anti-thunder tube for basis, build the two-stage lightning protection circuit of firsts and seconds, can realize and overvoltage protection anti-lightning strike to the entirety of RS485 interface.When lightning induced surge senses in RS-485 bus, by one-level anti-thunder tube TED485 anti-thunder tube fast reaction (nanosecond), Lightning Over-voltage is released rapidly, and the large characteristic of surge suppressor absorption energy can ensure that one-level anti-thunder tube self is not damaged in large voltage is released process, voltage is down to 90V left and right.What second class protection used is TVS anti-thunder tube; its effect sponges above-described residual voltage exactly; be clamped at reliably within the scope of safe voltage 6.8V, be limited in, in the safe range of bearing of terminal equipment, so just having reached anti-lightning strike object.Mode of connection is: the cable of 485 communication equipments is respectively ground, signal A, and signal B, must take lightning protection, and lightning-protection module earth connection has good contacting with ground wire, and earth resistance should meet lightning protection code requirement, and earth connection is accomplished thick, short, straight as far as possible.Each terminal adopts a lightning-protection module, to strengthen the Lighting Protection Measures to equipment.
Claims (1)
1. a connection lightning protection device, it is characterized in that: this connection lightning protection device is provided with firsts and seconds two-stage lightning protection circuit, one-level lightning protection circuit adopts TED485 anti-thunder tube to realize, secondary lightning protection circuit adopts TVS anti-thunder tube to realize, wherein, FL is TED485 anti-thunder tube, TS is TVS anti-thunder tube, its annexation is: TED485 anti-thunder tube FL1, TED485 anti-thunder tube FL2, the positive pole of TVS anti-thunder tube TS1 and TVS anti-thunder tube TS3 joins and ground connection, TED485 anti-thunder tube FL1, the positive pole of TVS anti-thunder tube TS1 negative pole and TVS anti-thunder tube TS2 joins for 485A terminals, TVS anti-thunder tube TS2, the negative pole of TVS anti-thunder tube TS3 and TED485 anti-thunder tube FL2 joins for 485B terminals, circuit integrally closed is in the shell (1) of PVC material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420065218.0U CN203707770U (en) | 2014-02-14 | 2014-02-14 | Communication cable lightning protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420065218.0U CN203707770U (en) | 2014-02-14 | 2014-02-14 | Communication cable lightning protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203707770U true CN203707770U (en) | 2014-07-09 |
Family
ID=51058152
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420065218.0U Expired - Fee Related CN203707770U (en) | 2014-02-14 | 2014-02-14 | Communication cable lightning protection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203707770U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103762577A (en) * | 2014-02-14 | 2014-04-30 | 国网山东齐河县供电公司 | Communication line thunder prevention device |
-
2014
- 2014-02-14 CN CN201420065218.0U patent/CN203707770U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103762577A (en) * | 2014-02-14 | 2014-04-30 | 国网山东齐河县供电公司 | Communication line thunder prevention device |
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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: 20140709 Termination date: 20170214 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |