CN2316756Y - Lighting protector for AC power - Google Patents
Lighting protector for AC power Download PDFInfo
- Publication number
- CN2316756Y CN2316756Y CN 97232242 CN97232242U CN2316756Y CN 2316756 Y CN2316756 Y CN 2316756Y CN 97232242 CN97232242 CN 97232242 CN 97232242 U CN97232242 U CN 97232242U CN 2316756 Y CN2316756 Y CN 2316756Y
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- CN
- China
- Prior art keywords
- zero line
- live wire
- circuit
- electric capacity
- wire
- 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 relates to a lighting protector for an AC power used for power transmission engineering. The control circuit of the utility model comprises an overcurrent protection circuit 1, a choke and overvoltage protection circuit 2, a purification absorption circuit 3, and an overvoltage protection circuit 4. The utility model has the advantages of broad lightning protection range, fast response speed, large discharge current capacity, and compact circuit. The utility model has a self-healing action, and the loss of power cords caused by lightning stroke can be effectively avoided.
Description
The utility model relates to a kind of lightning protector that is used for power transmission engineering, and especially a kind of AC power lightning protector belongs to the power technology field.
Annual because thunderbolt causes very big economic loss in the power transmission engineering, people have taked a kind of measure for this reason, as lightning rod, carborundum lightning arrester etc., but there are many drawbacks in these measures, and are big as afterflow, the residual voltage height, response speed waits slowly, can't satisfy the requirement of high-precision electronic equipment to power supply.The zinc oxide lightning arrester of Chu Xianing had solved the problems referred to above preferably in recent years, but had following problem: the one, and lightning protection effect is relatively poor, and the 2nd, structure, complex circuit.
The purpose of this utility model is to provide the AC power that a kind of line construction is succinct, lightning protection effect is good lightning protector.
The purpose of this utility model is achieved through the following technical solutions: a kind of AC power lightning protector; include housing and control circuit, its special character is that described control circuit is connected with circuit overcurrent protection, wave arrestment and overvoltage crowbar in regular turn, purification absorbs circuit, overvoltage crowbar.Wherein circuit overcurrent protection is the overcurrent protection that utilizes the normal air switch, and two groups of overcurrent protection air switches are serially connected in respectively on live wire, the zero line, and is excessive at the transmission line electric current, when surpassing the current limit amount transmission line is disconnected.In wave arrestment and the overvoltage crowbar, utilize two inductance coils to be serially connected in respectively on live wire and the zero line, weaken lightning wave amplitude and steepness with this; Surge current to thunderbolt then adopts the electric capacity that is connected across between live wire, zero line to absorb; To the voltage that is struck by lightning between line and between line ground, then adopt between live wire and ground wire, between zero line and ground wire, the cross-over connection piezo-resistance is carried out amplitude limit between live wire and zero line, and after the thunderbolt, piezo-resistance automatically restore to former resistance value.The effect that purify to absorb circuit is that the high order harmonic component of thunder and lightning and the infection in the electrical network ripple of making an uproar is suppressed and absorbs, adopt between the live wire and zero line of two groups of symmetries, between live wire and ground wire, the capacitor of cross-over connection absorbing high-frequency ripple constitutes between zero line and ground wire, be connected in series respectively on the live wire in the middle of two groups of symmetry electric capacity and the zero line can coaxial adjusting inductance coil.The overvoltage crowbar utilization be connected the piezo-resistance between live wire and ground wire, zero line and ground wire, live wire and zero line and be connected live wire and zero line between electric capacity thunderbolt rudimental energy and surge current are carried out further amplitude limit and absorption.
For transmission line is carried out further reliable protection; the utility model also can be between live wire in notch and the overvoltage crowbar and zero line vacuum discharge tube of cross-over connection; this is to utilize vacuum discharge tube under the instant high-voltage effect; two interpolars produce short circuit phenomenon and spark; utilize the big characteristics of discharge tube through-current capacity simultaneously; under strong thunderbolt, this scheme is more feasible.
It is fast and have self-healing to the utlity model has lightning protection wide ranges, response speed, and discharge capacity is big, and simple in circuits can be avoided power line preferably because the loss of being struck by lightning and causing.
Description of drawings:
Fig. 1: the utility model control circuit electricity functional-block diagram;
Fig. 2: the utility model embodiment 1 control circuit electrical schematic diagram;
Fig. 3: the utility model embodiment 2 control circuit electrical schematic diagrams.
Provide specific embodiment of the utility model below in conjunction with accompanying drawing, be used for that the utility model will be further described.
The AC power lightning protector lightning protection wide ranges of present embodiment, response speed is fast, the big simple in circuits of discharge capacity, the loss that can avoid power line to cause owing to thunderbolt preferably.
Claims (6)
1, a kind of AC power lightning protector includes housing and control circuit, it is characterized in that described control circuit is connected with circuit overcurrent protection (1), wave arrestment and overvoltage crowbar (2) in regular turn, purifies absorption circuit (3), overvoltage crowbar (4).
2, according to the described AC power lightning protector of claim 1, it is characterized in that described circuit overcurrent protection (1) be two groups of overcurrent protection air switches (K1) with (K2) be serially connected in live wire (AA ') respectively, zero line (BB ') is gone up and is constituted.
3, according to the described AC power lightning protector of claim 1; it is characterized in that described wave arrestment and overvoltage crowbar (2) are two inductance coils (L1) and (L2) are serially connected in respectively on live wire (AA '), the zero line (BB '); cross-over connection has the electric capacity (C1) that absorbs the lightning surge electric current and thunderbolt voltage is carried out the piezo-resistance (MY1) of amplitude limit between live wire (AA ') and the zero line (BB '), also is connected with the piezo-resistance (MY2), (MY3) that thunderbolt voltage are carried out amplitude limit between live wire (AA '), zero line (BB ') and the ground respectively.
4, according to the described AC power lightning protector of claim 1, it is characterized in that described purification absorption circuit (3) is two groups and is connected across electric capacity and inductance formation between live wire and the zero line symmetrically, comprise between electric capacity between live wire and zero line (C2, C7), live wire and ground wire electric capacity (C5, C6) between electric capacity (C3, C4), zero line and ground wire, tandem electric inductance (L3 ') on tandem electric inductance on the live wire (L3), the zero line is (L3) with (L3 ') coaxial adjusting.
5, according to the described AC power lightning protector of claim 1; it is characterized in that described overvoltage crowbar is piezo-resistance (MY6) and the electric capacity (C8) that is connected across between live wire and the zero line, is serially connected in piezo-resistance (MY4), (MY5) between live wire and ground wire, zero line and the ground wire.
6,, it is characterized in that between live wire in described notch and the overvoltage crowbar and the zero line that also one of cross-over connection is used for the vacuum discharge tube (VE) that strong thunderbolt sparks down according to the described AC power lightning protector of claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97232242 CN2316756Y (en) | 1997-12-08 | 1997-12-08 | Lighting protector for AC power |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97232242 CN2316756Y (en) | 1997-12-08 | 1997-12-08 | Lighting protector for AC power |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2316756Y true CN2316756Y (en) | 1999-04-28 |
Family
ID=33944084
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97232242 Expired - Fee Related CN2316756Y (en) | 1997-12-08 | 1997-12-08 | Lighting protector for AC power |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2316756Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102148500A (en) * | 2011-03-16 | 2011-08-10 | 深圳茂硕电源科技股份有限公司 | Unique lightning protection circuit of LED (light-emitting diode) power supply |
| CN103296661A (en) * | 2013-05-30 | 2013-09-11 | 深圳远征技术有限公司 | Lightning protection circuit of direct-current system |
| CN106411112A (en) * | 2016-10-12 | 2017-02-15 | 长沙群瑞电子科技有限公司 | Surge overvoltage absorption circuit used for power device |
| CN110932250A (en) * | 2019-12-02 | 2020-03-27 | 国家电网公司西南分部 | Lightning protection circuit for communication power supply |
-
1997
- 1997-12-08 CN CN 97232242 patent/CN2316756Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102148500A (en) * | 2011-03-16 | 2011-08-10 | 深圳茂硕电源科技股份有限公司 | Unique lightning protection circuit of LED (light-emitting diode) power supply |
| CN103296661A (en) * | 2013-05-30 | 2013-09-11 | 深圳远征技术有限公司 | Lightning protection circuit of direct-current system |
| CN103296661B (en) * | 2013-05-30 | 2016-02-03 | 深圳远征技术有限公司 | A kind of lightning protection circuit of direct current system |
| CN106411112A (en) * | 2016-10-12 | 2017-02-15 | 长沙群瑞电子科技有限公司 | Surge overvoltage absorption circuit used for power device |
| CN110932250A (en) * | 2019-12-02 | 2020-03-27 | 国家电网公司西南分部 | Lightning protection circuit for communication power supply |
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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 |