CN204167902U - High safe Surge Protector - Google Patents
High safe Surge Protector Download PDFInfo
- Publication number
- CN204167902U CN204167902U CN201420447134.3U CN201420447134U CN204167902U CN 204167902 U CN204167902 U CN 204167902U CN 201420447134 U CN201420447134 U CN 201420447134U CN 204167902 U CN204167902 U CN 204167902U
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- filter circuit
- matrix filter
- discharge tube
- matrix
- surge protector
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Abstract
The utility model provides a kind of high safe Surge Protector, relates to electronic equipment protection device technical field.This utility model comprises the first matrix filter circuit, the second matrix filter circuit, the 3rd matrix filter circuit and the 4th matrix filter circuit, first matrix filter circuit and the parallel connection of the 3rd matrix filter circuit, the second matrix filter circuit and the parallel connection of the 4th matrix filter circuit; First matrix filter circuit, the second matrix filter circuit, the 3rd matrix filter circuit and the 4th matrix filter circuit are the piezo-resistance of series connection and many groups parallel-connection structure of discharge tube.The utility model utilize on the one hand gas discharge tube can blocking system pressure-sensitive when normally working in leakage current, slow down the deterioration of the performance of varistor; On the other hand timely electric equipment to be protected, afterflow problem, action sensitivity problem when stopping gas discharge tube discharge and problems such as effectively suppressing is difficult to for the lightning wave that wave head rising steepness is larger.
Description
Technical field
The utility model relates to a kind of electronic equipment protection device, particularly relates to a kind of high safe Surge Protector.
Background technology
Electricity Surge Protector is widely used in the security protection of whole world high added value, high-end electronic electric equipment.Modular electricity Surge Protector will protect and just can reach about 1000V through B level, C level, D level three; the leakage current of common votage limit type Surge Protector is generally at 10uA, and As time goes on, leakage current can be increasing; directly affect the stability that SPD uses, finally cause SPD to lose efficacy.
Modular Surge Protector adopts monolithic piezo-resistance as main discharge circuit; due to monolithic piezo-resistance through-current capacity always not ideal enough (general monolithic piezo-resistance maximum discharge current 20KA 8/20uS); because piezo-resistance has a fatal shortcoming---there is irregular leakage current; after piezo-resistance work a period of time; the particularly piezo-resistance of poor-performing, because leakage current becomes conference accelerated ageing or heating self-destruction.The pressure-sensitive sensing resistor electricity Surge Protector of single structure, in the reaction time long (> 25ns), easily aging, after action several times, leakage current can increase, thus causes piezo-resistance overheated, and finally cause ageing failure, electric capacity is larger.The discharge tube electricity Surge Protector of single structure, residual voltage high (2 ~ 4KV), reaction time long (> 100ns), operation voltage precision is lower, there is power frequency continued flow, directly can not be used on power supply and do differential mode protection, although general electrified equipment requirement can be met, but along with the development of large scale integrated circuit, electronics technology, automated control technology and the extensive use of information technology in social all trades and professions, responsive electric equipment, accurate electronic equipment, signal transmission apparatus had become the important leverage of all trades and professions production normal operation already.If the component quality of Surge Protector inside have problem, aging or lost efficacy, the response time be certain to extend, Surge Protector just can not preempt protected device interior overvoltage, electric discharge components and parts startup, just lost out Protection significance.
Utility model content
For the weak point existed in the problems referred to above, the utility model provides a kind of high safe Surge Protector, make its on the one hand gas discharge tube can blocking system pressure-sensitive when normally working in leakage current, slow down the deterioration of the performance of varistor; On the other hand timely electric equipment to be protected, afterflow problem, action sensitivity problem when stopping gas discharge tube discharge and problems such as effectively suppressing is difficult to for the lightning wave that wave head rising steepness is larger.
In order to solve the problem, the utility model provides a kind of high safe Surge Protector, wherein, comprise the first matrix filter circuit, the second matrix filter circuit, the 3rd matrix filter circuit and the 4th matrix filter circuit, described first matrix filter circuit and described 3rd matrix filter circuit parallel connection, described second matrix filter circuit and described 4th matrix filter circuit parallel connection; Described first matrix filter circuit, described second matrix filter circuit, described 3rd matrix filter circuit and described 4th matrix filter circuit are the piezo-resistance of series connection and many groups parallel-connection structure of discharge tube.
Preferably, one end of described first matrix filter circuit is connected with ground wire, and the other end is connected with phase line.
Preferably, one end of described second matrix filter circuit is connected with zero line, and the other end is connected with phase line.
Preferably, one end of described 3rd matrix filter circuit is connected with ground wire, and the other end is connected with phase line.
Preferably, one end of described 4th matrix filter circuit is connected with zero line, and the other end is connected with phase line.
Preferably, also comprise overcurrent fusible link, described overcurrent fusible link is arranged in phase line.
Compared with prior art, the utility model has the following advantages:
The utility model adopts the structure of piezo-resistance and discharge tube series connection, discharge tube serves as on-off action at this, when there is no temporary overvoltage effect, it can by varistor and whole system completely isolated, namely leakage current is not had, the same deterioration that can slow down the performance of varistor, on the one hand gas discharge tube can blocking system pressure-sensitive when normally working in leakage current, slow down the deterioration of the performance of varistor; Utilize the plurality of advantages such as pressure-sensitive fast response time, nonlinear characteristic are good, discharge capacity is large on the other hand; in time electric equipment is protected, afterflow problem, action sensitivity problem when stopping gas discharge tube discharge and problems such as effectively suppressing is difficult to for the lightning wave that wave head rising steepness is larger.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is embodiment circuit diagram of the present utility model;
Main element symbol description:
1-overcurrent fusible link 2-first matrix filter circuit
3-second matrix filter circuit 4-the 3rd matrix filter circuit
5-the 4th matrix filter circuit
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearly understand, below in conjunction with accompanying drawing and example, the utility model is described in further detail, but example is not as to restriction of the present utility model.
As depicted in figs. 1 and 2, embodiment of the present utility model comprises the first matrix filter circuit 2, second matrix filter circuit 3, the 3rd matrix filter circuit 4 and the 4th matrix filter circuit 5, first matrix filter circuit 2 and the parallel connection of the 3rd matrix filter circuit 4, the second matrix filter circuit 3 and the parallel connection of the 4th matrix filter circuit 5; First matrix filter circuit 2, second matrix filter circuit 3, the 3rd matrix filter circuit 4 and the 4th matrix filter circuit 5 are the piezo-resistance of series connection and many groups parallel-connection structure of discharge tube.
Further, one end of the first matrix filter circuit 2 is connected with ground wire, and the other end is connected with phase line.
Further, one end of the second matrix filter circuit 3 is connected with zero line, and the other end is connected with phase line.
Further, one end of the 3rd matrix filter circuit 4 is connected with ground wire, and the other end is connected with phase line.
Further, one end of the 4th matrix filter circuit 5 is connected with zero line, and the other end is connected with phase line.
Further, also comprise overcurrent fusible link 1, overcurrent fusible link 1 is arranged in phase line.
In the present embodiment, surge flows through piezo-resistance and discharge tube and forms the first matrix filter circuit 2 pairs of ground wires and discharge through overcurrent fusible link 1, tunnel, then flows through piezo-resistance and discharge tube and forms the 3rd matrix filter circuit 4 pairs of ground wires and discharge; Another road is flow through piezo-resistance and discharge tube and is formed the second matrix filter circuit 3 pairs of zero lines and discharge, and then flows through piezo-resistance and discharge tube and forms the 4th matrix filter circuit 5 pairs of zero lines and discharge.
Through laboratory research: share by pressing every resistance and ceramic discharge tube; the parasitic capacitance increasing parallel circuits can be overcome; be unfavorable for this shortcoming of electronic system protecting operating frequency higher; ceramic discharge tube discharge capacity is large; interelectrode capacitance little (≤3pF); insulation resistance high (>=1000M Ω); substantially leakage current is not had; once the surge voltage of more than 6KV can be suppressed to less than 2 times of system maximum working voltage; three-phase can be suppressed to 800V, single-phase can be suppressed to below 600V.
In the present embodiment, as adopted the structure of piezo-resistance and discharge tube series connection, discharge tube serves as on-off action at this, when there is no temporary overvoltage effect, it can by varistor and whole system completely isolated, namely there is no leakage current, the deterioration of the performance of varistor can be slowed down equally, on the one hand gas discharge tube can blocking system pressure-sensitive when normally working in leakage current, slow down the deterioration of the performance of varistor, utilize pressure-sensitive fast response time on the other hand, nonlinear characteristic is good, the plurality of advantages such as discharge capacity is large, in time electric equipment is protected, stop afterflow problem during gas discharge tube discharge, action sensitivity problem, and problems such as effectively suppressing is difficult to for the lightning wave that wave head rising steepness is larger, namely gas discharge tube makes the chargeability of varistor be zero, the nonlinear characteristic of varistor makes again blow-out immediately after gas discharge tube action, without afterflow, operating duty is light, robust to repeated Motor ability is strong, effectively can solve leakage problem, the job stability of leakage current size direct relation piezo-resistance, be related to the useful life of Surge Protector.
In the present embodiment, as adopted the structure of piezo-resistance and discharge tube parallel connection, the tube wall of ceramic discharge possesses effect of rapid Homogeneouslly-radiating, rapidly the electric energy of discharge process can be converted to heat energy and evenly spread rapidly, be conducive to absorbing pipe transient state relatively high power, before discharge tube not yet discharges conducting, piezo-resistance just starts action, to temporary overvoltage clamp, to release big current, when after discharge tube electric discharge conducting, it will carry out parallel shunt with piezo-resistance, reduce the through-flow pressure to piezo-resistance, thus shorten the time of piezo-resistance by transient heavy current, contribute to the performance degradation slowing down piezo-resistance, in parallel combination, if the reference voltage U1mA of piezo-resistance selects too low, then discharge tube will likely in temporary overvoltage interior conducting of can not discharging action period, superpotential energy will be born completely by piezo-resistance, unfavorable to piezo-resistance like this, therefore, the numerical value of U1mA must select larger than the DC disruptive voltage of discharge tube, but because it solves the afterflow problem of discharge tube generation well, it is not suitable for the protection of AC power supply system.
In the present embodiment, because piezo-resistance has larger parasitic capacitance, when protection for alternating current circuit, larger leakage current can be produced, large let out electric current and can have an impact to the normal work of system, after piezo-resistance is connected with ceramic discharge tube and is used, because ceramic discharge tube parasitic capacitance is very little, may diminish to several picofarad, in tandem compound, ceramic discharge tube is actual serves an on-off action, when it does not have temporary transient state overvoltage, piezo-resistance and system can separate by it, piezo-resistance is made not have leakage current, so just can reduce the reference voltage of piezo-resistance, thus effectively slow down piezo-resistance performance degradation, , the reference voltage of piezo-resistance can obtain lower by option, as long as ceramic discharge tube can conducting rapidly, then series circuit just can provide lower clamping voltage.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the utility model.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein when not departing from spirit or scope of the present utility model, can realize in other embodiments.Therefore, the utility model can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (6)
1. one kind high safe Surge Protector, it is characterized in that, comprise the first matrix filter circuit, the second matrix filter circuit, the 3rd matrix filter circuit and the 4th matrix filter circuit, described first matrix filter circuit and described 3rd matrix filter circuit parallel connection, described second matrix filter circuit and described 4th matrix filter circuit parallel connection; Described first matrix filter circuit, described second matrix filter circuit, described 3rd matrix filter circuit and described 4th matrix filter circuit are the piezo-resistance of series connection and many groups parallel-connection structure of discharge tube.
2. high safe Surge Protector as claimed in claim 1, is characterized in that, one end of described first matrix filter circuit is connected with ground wire, and the other end is connected with phase line.
3. high safe Surge Protector as claimed in claim 1, is characterized in that, one end of described second matrix filter circuit is connected with zero line, and the other end is connected with phase line.
4. high safe Surge Protector as claimed in claim 1, is characterized in that, one end of described 3rd matrix filter circuit is connected with ground wire, and the other end is connected with phase line.
5. high safe Surge Protector as claimed in claim 1, is characterized in that, one end of described 4th matrix filter circuit is connected with zero line, and the other end is connected with phase line.
6., as the safe Surge Protector of height as described in arbitrary in claim 1-5, it is characterized in that, also comprise overcurrent fusible link, described overcurrent fusible link is arranged in phase line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420447134.3U CN204167902U (en) | 2014-08-06 | 2014-08-06 | High safe Surge Protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420447134.3U CN204167902U (en) | 2014-08-06 | 2014-08-06 | High safe Surge Protector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204167902U true CN204167902U (en) | 2015-02-18 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420447134.3U Expired - Fee Related CN204167902U (en) | 2014-08-06 | 2014-08-06 | High safe Surge Protector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204167902U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108989908A (en) * | 2018-05-18 | 2018-12-11 | 云南电网有限责任公司电力科学研究院 | A kind of Surge Protector replacing options and device for communication base station |
| CN109888760B (en) * | 2019-03-12 | 2023-10-20 | 北京山图有源防雷科技有限公司 | Safety protection device for electrical equipment |
-
2014
- 2014-08-06 CN CN201420447134.3U patent/CN204167902U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108989908A (en) * | 2018-05-18 | 2018-12-11 | 云南电网有限责任公司电力科学研究院 | A kind of Surge Protector replacing options and device for communication base station |
| CN109888760B (en) * | 2019-03-12 | 2023-10-20 | 北京山图有源防雷科技有限公司 | Safety protection device for electrical equipment |
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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: 20150218 Termination date: 20150806 |
|
| EXPY | Termination of patent right or utility model |