CN103956723A - Multi-pulse surge protector - Google Patents
Multi-pulse surge protector Download PDFInfo
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- CN103956723A CN103956723A CN201410093870.8A CN201410093870A CN103956723A CN 103956723 A CN103956723 A CN 103956723A CN 201410093870 A CN201410093870 A CN 201410093870A CN 103956723 A CN103956723 A CN 103956723A
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Abstract
The invention discloses a multi-pulse surge protector. The multi-pulse surge protector comprises a protector body. The live wire branch inside the protector body is provided with at least one order of a multi-pulse heavy-current impact voltage limiting protection circuit with reserve protection elements. Each order of the multi-pulse heavy-current impact voltage limiting protection circuit comprises a serial branch formed by at least one pressure-sensitive resistor and a reserve protection element. The advantages are as follows: power frequency short circuit currents are directly broken (replacement by use of copper is unnecessary), energy and time cooperate, and the multi-pulse surge protector can bear the multi-pulse impact of actual thunder. Besides, the multi-pulse surge protector can pass a secondary test T2, is suitable for installation in a building, and accordingly more effectively protects the various electrical electronic devices of a low-voltage distribution line.
Description
Technical field
The present invention relates to a kind of surge protector, belong to anti-lightning strike protection equipment technical field, refer in particular to a kind of multiple-pulse surge protector.
Background technology
Along with the continuous progress of science and technology, the development of electronic technology, what various advanced persons' electronic product was just increasingly extensive is applied in the neighborhood systems such as information industry, communications and transportation, electric power, finance, chemical industry.And progressively intelligent along with various electric elements in low-voltage distribution system consequently selected the electronic component that a large amount of withstand voltages are low, sensitiveness is high, integrated level is high.But lightning overvoltage or switching overvoltage, bring fatal infringement usually to these electronic components, range, the degree of depth, frequency that overvoltage is destroyed all continue to increase.Therefore, in order to prevent the infringement to electronic and electrical equipment of lightning overvoltage and switching overvoltage, improve the security reliability of device systems, various surge protectors (being called for short SPD, the abbreviation of English Surge Protective Device) have obtained using widely.
At present, the surge protector SPD that global various countries produce researches and develops and produces and adopt the pulse shock wave of 10/350 μ s or 8/20 μ s to test through thunder and lightning High-Voltage Experimentation chamber according to the product technology standard of IEC/TC61643.In IEC61643-1--2011 and China's standard GB/T 50057-2010 " Code for design of lightning protection of buildings ", the surge protector of low-voltage distribution system is divided into three grades of test methods, and represents respectively with T1, T2 and T3.
Existing surge protector generally can be divided into switching mode SPD and votage limit type SPD, and switching mode SPD can bear the large capacity impulse current of the formation such as direct stroke, but exist, deboost is high, the reaction time is long, and difficulty is turn-offed in afterflow.And current research also shows, too slow (response time≤20ns of votage limit type SPD of switching mode SPD response time, response time >=200us of switching mode SPD, pulse length mean value≤the 180us of true lightning current, the shortest is 119.6us), cause playing good inhibitory action to lightning current, often occur that lightening pulse has damaged second level SPD and equipment and the inoperative phenomenon of first order switching mode SPD.Although the votage limit type SPD reaction time is fast, deboost is low; but can only bear limited impulse current; and the backup protection of itself require can by large pulse current again can less power current pass through time quick disjunction, and the time of disjunction be less than 5 seconds.
But, not yet there is in the world the technical scheme that solves above-mentioned technical barrier at present, therefore in IEC61643-1-2011, in 8.3.5.3, regulation should adopt suitable copper billet (stimulated replacement thing) to replace.But, often there is explosion phenomenon on fire in the actual conditions while replacing the way of switching mode or votage limit type device not meet SPD short circuit with copper billet in actual motion.On the other hand, the SPD that is arranged on the second level in building need carry out secondary test T2 according to the regulation of GB50057-2010, impacts with 8/20us waveform.In order to test by secondary, the SPD of the second level adopts the design of pressure limiting device, this votage limit type SPD(T2 conventionally) there is the through-current capability of larger 8/20us waveform electric current, but only have 1/20 of its nominal value by the ability of 10/350us waveform electric current.And according to existing international national standard, in the time carrying out short circuit current test, need adopt suitable copper billet (stimulated replacement thing) to replace core devices.Moreover, further scientific experimentation and lightning protection practice all illustrate, thunder and lightning High-Voltage Experimentation chamber is not inconsistent by the fact that method and the true thunder and lightning of Sing plus inspection SPD are once launch aed surprise attack multiple pulses, tolerance and its nominal value of the SPD checking with Sing plus through thunder and lightning High-Voltage Experimentation chamber in the time of true thunderbolt greatly differs from each other, often cause SPD overheated on fire from explosion, initiation fire accident.Naturally be struck by lightning tolerance test of Lightning Test base, field, Guangzhou SPD on August 12nd, 2008: the non-single LEMP of negative polarity has 8 counterattack, maximum current 26.4kA, the current maxima of the SPD that flows through is 1.64KA, causes the SPD damage of nominal current 20kA.[on August 12nd, 2011, poplar was few outstanding, the paper that Chen Shaodong etc. deliver in the international atmospheric electricity conference of Brazilian 14Jie: <Triggered Lightning Analysis Gives New Insight into Over Current Effects on Surge Protective Devices >].In sum, the direct disjunction of power frequency short circuit current, energy and time coordination, to stand that multiple-pulse impacts be the international technical barrier of San great in current SPD research and production.
Therefore, development can tolerate the multiple-pulse impact capacity of true thunder and lightning, there is again the direct disjunction of power frequency short circuit current (not needing to substitute with copper billet), and the SPD(T2 of the employing secondary of energy and time coordination test), be not only the active demand in domestic and international lightning protection field, and be the historic leap of lightning protection product technology.
Summary of the invention
The object of the invention is to overcome shortcoming of the prior art with not enough; a kind of multiple-pulse surge protector is provided; this surge protector has advantages of the direct disjunction of power frequency short circuit current (do not need with copper billet substitute), energy and time coordination, can bear the multiple-pulse impact of true thunder and lightning; and can test T2 by secondary; be applicable to be arranged in building, thus the various electric/electronic devices of more effective protection low-voltage distributing line.
To achieve these goals, the present invention realizes according to following technical scheme:
A kind of multiple-pulse surge protector; include protector body; described protector body interior live wire branch road is provided with one-level at least and possesses the multiple-pulse heavy current impact pressure limited protection circuit of backup protection element; wherein, every one-level multiple-pulse heavy current impact pressure limited protection circuit includes the series arm of at least one piezo-resistance and backup protection element formation.
Further; the live wire branch road of described protector body interior is provided with multistage multiple-pulse rush of current pressure limited protection circuit; every one-level multiple-pulse rush of current pressure limited protection circuit includes the series arm of at least one piezo-resistance and pulse fuse formation, and wherein the direct-current working volts of the piezo-resistance of first order series arm are U
0, the direct-current working volts of the piezo-resistance of the above series arm in the second level are U
0+ △ U
n, n is 1 to 9.
Further; described protector body is also provided with faulty indication circuit for lamp; this faulty indication circuit for lamp includes the series arm of indicator light and conventional, electric-resistance formation, and this series arm is connected between the piezo-resistance and pulse fuse of first order multiple-pulse heavy current impact pressure limited protection circuit.
Further, described protector body is also provided with remote signalling socket.
Further, the zero line branch road of described protector body is also provided with multiple-pulse heavy current impact pressure limited protection circuit, and this multiple-pulse heavy current impact pressure limited protection circuit includes the series arm of at least one piezo-resistance and backup protection element formation.
A kind of multiple-pulse surge protector; include protector body; in described protector body, be provided with three-phase circuit; the live wire branch road of described each circuitry phase is provided with one-level at least and possesses the multiple-pulse heavy current impact pressure limited protection circuit of backup protection element; wherein, every one-level multiple-pulse heavy current impact pressure limited protection circuit includes the series arm of at least one piezo-resistance and backup protection element formation.
Further; the live wire branch road of described each circuitry phase is provided with multistage multiple-pulse rush of current pressure limited protection circuit; every one-level multiple-pulse rush of current pressure limited protection circuit includes the series arm of at least one piezo-resistance and pulse fuse formation, and wherein the direct-current working volts of the piezo-resistance of first order series arm are U
0, the direct-current working volts of the piezo-resistance of the above series arm in the second level are U
0+ △ U
n, n is 1 to 9.
Further; described protector body is also provided with faulty indication circuit for lamp; this faulty indication circuit for lamp includes the series arm of indicator light and conventional, electric-resistance formation, and this series arm is connected between the piezo-resistance and pulse fuse of first order multiple-pulse heavy current impact pressure limited protection circuit of each circuitry phase.
Further, described protector body is also provided with remote signalling socket.
Further, the zero line branch road of described protector body is also provided with multiple-pulse heavy current impact pressure limited protection circuit, and this multiple-pulse heavy current impact pressure limited protection circuit includes the series arm of at least one piezo-resistance and backup protection element formation.
Compared with prior art, its beneficial effect is in the present invention:
1, lightning protection capability of the present invention improves greatly, has the ability of the direct disjunction of power frequency short circuit current (do not need with copper billet substitute), has solved SPD(T2) standby disjunction problem when short circuit own, greatly improved SPD(T2) fail safe; There is good energy and time coordination, all adopt piezo-resistance as SPD(T2) core component, solved mixed type SPD in energy and ill-matched problem on the time; There is the impact capacity of bearing multiple-pulse thunder and lightning, solved the problem that can not bear true multiple-pulse lightning impulse with the SPD of pulse test.
2, the present invention is applicable to be arranged in building, thereby the various electric/electronic devices of more effective protection low-voltage distributing line, the particularly overvoltage protection to the high important electronic equipment of sensitiveness ensure the safe and effective running of electronic apparatus system.
3, of the present invention being widely used, will greatly reduce the generation of Lightning Disaster; Overall structure advantages of simple of the present invention simultaneously, cost is moderate, and operation and maintenance is convenient, has good economic benefit and social benefit.
In order to understand more clearly the present invention, set forth the specific embodiment of the present invention below with reference to brief description of the drawings.
Brief description of the drawings
Fig. 1 is the circuit diagram in the embodiment of the present invention 1 single phase circuit with one-level multiple-pulse rush of current pressure limited protection circuit.
Fig. 2 is the circuit diagram in the embodiment of the present invention 1 single phase circuit with three grades of multiple-pulse rush of current pressure limited protection circuits.
Fig. 3 is the circuit diagram of the embodiment of the present invention 2 three-phase circuits.
Fig. 4 is the circuit connection diagram that the present invention uses state.
Embodiment
Embodiment 1
As shown in Figure 1; multiple-pulse surge protector of the present invention; it includes protector body; the live wire branch road of protector body interior is provided with one-level multiple-pulse heavy current impact pressure limited protection circuit; this multiple-pulse heavy current impact pressure limited protection circuit includes the series arm of at least one piezo-resistance TMOV1 and pulse fuse Mb1 formation, and wherein the direct-current working volts of piezo-resistance are U
0.Further, described protector body is also provided with faulty indication circuit for lamp and remote signalling socket, this faulty indication circuit for lamp includes the series arm of indicator light D and conventional, electric-resistance R formation, and this series arm is connected between the piezo-resistance TMOV1 and pulse fuse Mb1 of first order multiple-pulse heavy current impact pressure limited protection circuit; The zero line branch road of described protector body is also provided with multiple-pulse heavy current impact pressure limited protection circuit, and this multiple-pulse heavy current impact pressure limited protection circuit includes the series arm of at least one piezo-resistance and backup protection element formation equally.
As shown in Figure 2; the live wire branch road of protector body interior of the present invention is provided with the multiple-pulse rush of current pressure limited protection circuit of three grades; every one-level multiple-pulse rush of current pressure limited protection circuit includes the series arm of at least one piezo-resistance and pulse fuse formation, and wherein the direct-current working volts of the piezo-resistance of first order series arm are U
0, the direct-current working volts of the piezo-resistance of second level series arm are U
0+ △ U
1, the direct-current working volts of the piezo-resistance of third level series arm are U
0+ △ U
2.Basic identical shown in all the other frame modes and Fig. 1.
Experimental result shows, the present invention has adopted to be had by large pulse through-current capability and has the pulse fuse (be called for short MB) of little power frequency breaking capacity (discreteness parameter control technology refers in same product according to discreteness parameter control technology with metal zinc oxide piezo-resistance (being called for short MOV), coordination and control to each device parameters while using the larger core devices of more than one discreteness parameter, jointly going to realize the target component of one or more designs) (classification breaking technology refers to that the backup protection equipment of each the branch road to composition SPD circuit is in the time of power frequency short circuit for the classification breaking technology of series connection, can carry out step by step disjunction by designing requirement, make SPD throw off supply line, thereby improve the fail safe that SPD uses.), make pulse fuse disconnect and play the backup protection equipment effect that makes low-voltage distributing line not be subject to SPD Effect of Short Circuit fast in the time of power frequency short circuit, realize the direct disjunction of power frequency short circuit current that does not need to substitute with copper billet MOV in the time of power frequency short circuit test; (odd even matching technology refers to when the branch road of composition SPD circuit adds up to odd number or even number to have adopted the odd even matching technology that whole uses have the MOV of heat energy positive feedback and carry out according to discreteness parameter control technology, need to carry out to it technology of the coupling of distributed constant), overcome current SPD(T2) employing switch and pressure limiting device Mixed Design, its energy and can not meet coordinating of time and suppress the defect of lightening pulse, has realized the consistency of energy and time coordination; Adopt the micro-rule parameter equity of multistage MOV distributed constant balancing technique in parallel, make SPD when by lightening pulse, the MOV of each parallel branch can be balanced pass through lightening pulse electric current, there is the multiple-pulse impact capacity of bearing true thunder and lightning thereby realized SPD.
Embodiment 2
As shown in Figure 3; multiple-pulse surge protector of the present invention; include protector body; in described protector body, be provided with three-phase circuit; the live wire branch road of each circuitry phase is provided with three grades of multiple-pulse rush of current pressure limited protection circuits; every one-level multiple-pulse rush of current pressure limited protection circuit includes the series arm of at least one piezo-resistance and pulse fuse formation, and wherein the direct-current working volts of the piezo-resistance of first order series arm are U
0, the direct-current working volts of the piezo-resistance of second level series arm are U
0+ △ U
1, the direct-current working volts of the piezo-resistance of third level series arm are U
0+ △ U
2.Other frame mode is substantially the same manner as Example 1.
As shown in Figure 4, when use, only the live wire of the first order multiple-pulse heavy current impact pressure limited protection circuit input of multiple-pulse surge protector need be connected with the live wire of electric low-voltage distributing line; The ground wire of n level multiple-pulse heavy current impact pressure limited protection circuit output is connected with the ground wire of electric low-voltage distributing line, can completes the installation of whole surge protector, simple and convenient, practical safety.
The present invention is not limited to above-mentioned execution mode, if to various changes of the present invention or modification (as the box or modular on surface structure; The size of through-current capacity In; the various protected modes of single-phase or three-phase of power supply form) do not depart from the spirit and scope of the present invention; if within these changes and modification belong to claim of the present invention and equivalent technologies scope, the present invention is also intended to comprise these changes and modification.
Claims (10)
1. a multiple-pulse surge protector; include protector body; it is characterized in that: the live wire branch road of described protector body interior is provided with one-level at least and possesses the multiple-pulse heavy current impact pressure limited protection circuit of backup protection element; wherein, every one-level multiple-pulse heavy current impact pressure limited protection circuit includes the series arm of at least one piezo-resistance and backup protection element formation.
2. multiple-pulse surge protector according to claim 1; it is characterized in that: the live wire branch road of described protector body interior is provided with multistage multiple-pulse rush of current pressure limited protection circuit; every one-level multiple-pulse rush of current pressure limited protection circuit includes the series arm of at least one piezo-resistance and pulse fuse formation, and wherein the direct-current working volts of the piezo-resistance of first order series arm are U
0, the direct-current working volts of the piezo-resistance of the above series arm in the second level are U
0+ △ U
n, n is 1 to 9.
3. multiple-pulse surge protector according to claim 2; it is characterized in that: described protector body is also provided with faulty indication circuit for lamp; this faulty indication circuit for lamp includes the series arm of indicator light and conventional, electric-resistance formation, and this series arm is connected between the piezo-resistance and pulse fuse of first order multiple-pulse heavy current impact pressure limited protection circuit.
4. multiple-pulse surge protector according to claim 1, is characterized in that: described protector body is also provided with remote signalling socket.
5. multiple-pulse surge protector according to claim 1; it is characterized in that: the zero line branch road of described protector body is also provided with at least one-level multiple-pulse heavy current impact pressure limited protection circuit; wherein, every one-level multiple-pulse heavy current impact pressure limited protection circuit includes the series arm of at least one piezo-resistance and backup protection element formation.
6. a multiple-pulse surge protector; include protector body; in described protector body, be provided with three-phase circuit; it is characterized in that: the live wire branch road of described each circuitry phase is provided with one-level at least and possesses the multiple-pulse heavy current impact pressure limited protection circuit of backup protection element; wherein, every one-level multiple-pulse heavy current impact pressure limited protection circuit includes the series arm of at least one piezo-resistance and backup protection element formation.
7. multiple-pulse surge protector according to claim 6; it is characterized in that: the live wire branch road of described each circuitry phase is provided with multistage multiple-pulse rush of current pressure limited protection circuit; every one-level multiple-pulse rush of current pressure limited protection circuit includes the series arm of at least one piezo-resistance and pulse fuse formation, and wherein the direct-current working volts of the piezo-resistance of first order series arm are U
0, the direct-current working volts of the piezo-resistance of the above series arm in the second level are U
0+ △ U
n, n is 1 to 9.
8. multiple-pulse surge protector according to claim 7; it is characterized in that: described protector body is also provided with faulty indication circuit for lamp; this faulty indication circuit for lamp includes the series arm of indicator light and conventional, electric-resistance formation, and this series arm is connected between the piezo-resistance and pulse fuse of first order multiple-pulse heavy current impact pressure limited protection circuit of each circuitry phase.
9. multiple-pulse surge protector according to claim 6, is characterized in that: described protector body is also provided with remote signalling socket.
10. multiple-pulse surge protector according to claim 6; it is characterized in that: the zero line branch road of described protector body is also provided with at least one-level multiple-pulse heavy current impact pressure limited protection circuit; wherein, every one-level multiple-pulse heavy current impact pressure limited protection circuit includes the series arm of at least one piezo-resistance and backup protection element formation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410093870.8A CN103956723A (en) | 2014-03-13 | 2014-03-13 | Multi-pulse surge protector |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410093870.8A CN103956723A (en) | 2014-03-13 | 2014-03-13 | Multi-pulse surge protector |
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|---|---|
| CN103956723A true CN103956723A (en) | 2014-07-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410093870.8A Pending CN103956723A (en) | 2014-03-13 | 2014-03-13 | Multi-pulse surge protector |
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| CN (1) | CN103956723A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110445142A (en) * | 2019-08-27 | 2019-11-12 | 四川三普科技有限公司 | A kind of strong electromagnetic pulse multistage protection device with detecting display function |
| CN110445113A (en) * | 2019-08-27 | 2019-11-12 | 中国工程物理研究院激光聚变研究中心 | A kind of strong electromagnetic pulse integrated protection device with detecting display function |
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| CN2619393Y (en) * | 2003-05-06 | 2004-06-02 | 深圳市麦克海鹏信电子有限公司 | Power lightning protector |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110445142A (en) * | 2019-08-27 | 2019-11-12 | 四川三普科技有限公司 | A kind of strong electromagnetic pulse multistage protection device with detecting display function |
| CN110445113A (en) * | 2019-08-27 | 2019-11-12 | 中国工程物理研究院激光聚变研究中心 | A kind of strong electromagnetic pulse integrated protection device with detecting display function |
| CN110445113B (en) * | 2019-08-27 | 2024-05-10 | 中国工程物理研究院激光聚变研究中心 | Strong electromagnetic pulse comprehensive protection device with detection and display functions |
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Application publication date: 20140730 |