CN201036100Y - Large current voltage-limiting power source surge protector - Google Patents
Large current voltage-limiting power source surge protector Download PDFInfo
- Publication number
- CN201036100Y CN201036100Y CNU2007200488006U CN200720048800U CN201036100Y CN 201036100 Y CN201036100 Y CN 201036100Y CN U2007200488006 U CNU2007200488006 U CN U2007200488006U CN 200720048800 U CN200720048800 U CN 200720048800U CN 201036100 Y CN201036100 Y CN 201036100Y
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- metal
- electrode
- surge protector
- oxide varistor
- voltage limit
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Abstract
The utility model in particular relates to a large-galvanization voltage-limiting protector for power surges, which comprises an upper metal electrode and a lower metal electrode as well as a metal oxide varistor which is clipped between the upper metal electrode and the lower metal electrode and is integrated with the upper metal electrode and the lower metal electrode by a tinfoil; the edge of the metal oxide varistor is sealed by epoxy resin. The utility model adopts the technology of surrounding with big metal electrodes innovatively, thereby greatly improving the flame retardant capability and the safety of products, and prolonging the service life of the products by being compared with the general SPD which uses the epoxy resin in large scale.
Description
Technical field:
The utility model refers in particular to a kind of high-throughput voltage limit power surge protector that has high anti-pulse ability and improve greatly in fire retardancy, security performance and useful life.
Background technology:
The B level of protection is made (according to E DIN VDE 0675Part 6/A1 in the direct lightning strike guard plot (LPZOB) and the interface, first guard plot (LPZ1) that are used for anti-minefield (Lightning Protection Zone is called for short LPZ) now; other differentiation of SPD level) power surge protector (Surge Protective Device is called for short SPD) is many based on discharging gap; the relative discharging gap of its anti-high rush of current ability of electronic ceramic limits of fabrication techniques is poor now owing to being subjected to for unitary piece of metal oxide voltage-sensitive resistor (Metal Oxide Varistor is called for short MOV); so less be used for B level SPD; though and also can be competent in the surge protection in B level lightning protection zone by the big through-current capacity votage limit type SPD that multi-disc small pieces MOV composes in parallel; but the screening of valve block pairing will inevitably greatly improve the manufacturing cost of product, thereby hinders the popularization in its market.Therefore now votage limit type SPD is not extensive in the application in B level lightning protection field.
Summary of the invention:
The purpose of this utility model is that purpose provides a kind of high-throughput voltage limit power surge protector.It can be under electronic ceramic limits of fabrication techniques now, the heat conduction technology efficiently of introducing solves the weakness of the shock-resistant current capacity difference of domestic and international one chip high-throughput voltage limit type SPD, overcome the problem of big through-flow type votage limit type SPD life characteristic difference both at home and abroad, improve the security performance of domestic big through-flow type votage limit type SPD, and the production cost of reduction high-throughput voltage limit type SPD, metal-oxide varistor is widely used in the B level lightning protection zone, makes product better realize the marketization.
For achieving the above object; the technical scheme that the utility model provides is: high-throughput voltage limit power surge protector; include electrode of metal, metal bottom electrode and metal-oxide varistor; metal-oxide varistor is located between electrode of metal and the metal bottom electrode; combine metal-oxide varistor edge epoxy sealing by tinfoil paper between two electrodes and the metal-oxide varistor up and down.
Electrode of metal and metal bottom electrode are fixed by insulated bolt.
Electrode of metal and metal bottom electrode are tightened by annular fixed housing.
Be reserved with the epoxy resin fill orifice on the electrode of metal.
Described metal-oxide varistor is the zinc oxide varistor chip.
Described electrode of metal, metal bottom electrode are for being metal aluminium electrode.
The utility model compared with prior art has the following advantages:
Be that the monolithic type votage limit type SPD product of chip is an example at present both at home and abroad with diameter 80D MOV, its 8/20 μ s waveform (simulation thunder and lightning waveform) nominal impulse current In is 50kA, peak current Imax is 100kA, the design's like product can be 100kA by the nominal impulse current In of 8/20 μ s test, peak current Imax is 150kA (test method among the secundum legem YD/T 1235.2), or 100kA impacts 40 times and do not damage, and greatly improved the anti-pulse shock ability of the SPD under the comparable size Zinc-oxide piezoresistor chip.
Votage limit type SPD used epoxy resin enclosed or encapsulation technology basically in a large number in the past; to reach its protection chip effect; and the fire retardancy of epoxy resin is relatively poor; when being subjected to rush of current or because the heat that zinc oxide varistor is produced during the network system irregular variation causes catching fire of epoxy resin probably, such accident takes place repeatedly.The design's structure innovation ground uses big metal electrode to surround technology, uses epoxy resin to compare in a large number with common SPD, improves the product fire retardancy greatly, improves product safety performance and useful life.The design can be easily by test (test method among the secundum legem YD/T 1235.2), and the burn-in test performance is excellent.
Description of drawings:
Below in conjunction with accompanying drawing the utility model is described further,
Accompanying drawing 1 is the utility model embodiment 1 structural representation;
Accompanying drawing 2 is the vertical view of Fig. 1;
Accompanying drawing 3 is the utility model embodiment 2 structural representations.
Embodiment:
Embodiment 1:
See Fig. 1, shown in Figure 2, the present embodiment acp chip is the metal-oxide varistor 4 of a slice diameter 80mm, it is folded between the electrode system that is made of metallic aluminium top electrode 1 and following metal electrode 6, combine by tinfoil paper 5 between the chip silver layer of two electrodes and metal-oxide varistor 4, smooth with the contact-making surface that guarantees chip and electrode.Two electrodes are fixing by four insulated bolts 2, and metal-oxide varistor 4 edges are reserved with epoxy resin fill orifice 7 with epoxy resin 3 sealings on the electrode of metal 1.Physics of the present utility model behind the employing said structure and unit for electrical property parameters are with reference to as follows:
| Physical parameter (Physical parameters) unit (Unit): millimeter (mm) | ||
| Working temperature | -25℃～+70℃ | |
| Storing temperature | -40℃～+85℃ | |
| Relative humidity | ≤95％ | |
| Running environment | Indoor or do not have sleet to corrode place | |
| Sheathing material | Aluminium | |
| Encapsulant | Epoxy resin | |
| Unit for electrical property parameters (EIectrical parameters) | ||
| Maximum Uc | Uc | 385V |
| Maximum direct-current working volts | Udc | 505V |
| Nominal discharge current | In(8/20μs) | 100KA |
| Maximum discharge current | Imax(8/20μs) | 150KA |
| The protection level | Up | ≤1.6KV |
| Testing standard | YD/T 1235.2 | |
Embodiment 2:
See shown in the accompanying drawing 3 that metallic aluminium top electrode 1 and following metal electrode 6 are to be tightened by annular fixed housing 8 as different from Example 1.
The embodiment of the above is preferred embodiment of the present utility model only, is not to limit practical range of the present utility model with this, so the equivalence that all shapes according to the utility model, structure and principle are done changes, all should be covered by in the protection range of the present utility model.
Claims (6)
1. high-throughput voltage limit power surge protector; it is characterized in that: include electrode of metal, metal bottom electrode and metal-oxide varistor; metal-oxide varistor is located between electrode of metal and the metal bottom electrode; combine metal-oxide varistor edge epoxy sealing by tinfoil paper between two electrodes and the metal oxide resistor up and down.
2. high-throughput voltage limit power surge protector according to claim 1 is characterized in that: electrode of metal and metal bottom electrode are fixed by insulated bolt.
3. high-throughput voltage limit power surge protector according to claim 1 is characterized in that: electrode of metal and metal bottom electrode are tightened by annular fixed housing.
4. high-throughput voltage limit power surge protector according to claim 1 is characterized in that: be reserved with the epoxy resin fill orifice on the electrode of metal.
5. high-throughput voltage limit power surge protector according to claim 1 is characterized in that: described metal-oxide varistor is the zinc oxide varistor chip.
6. high-throughput voltage limit power surge protector according to claim 1 is characterized in that: the electric down level of described electrode of metal, metal is for being metal aluminium electrode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200488006U CN201036100Y (en) | 2007-02-15 | 2007-02-15 | Large current voltage-limiting power source surge protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200488006U CN201036100Y (en) | 2007-02-15 | 2007-02-15 | Large current voltage-limiting power source surge protector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201036100Y true CN201036100Y (en) | 2008-03-12 |
Family
ID=39196989
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200488006U Expired - Fee Related CN201036100Y (en) | 2007-02-15 | 2007-02-15 | Large current voltage-limiting power source surge protector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201036100Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104582383A (en) * | 2015-01-13 | 2015-04-29 | 四川中光防雷科技股份有限公司 | Surge protection device with high reliability and high protection level |
-
2007
- 2007-02-15 CN CNU2007200488006U patent/CN201036100Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104582383A (en) * | 2015-01-13 | 2015-04-29 | 四川中光防雷科技股份有限公司 | Surge protection device with high reliability and high protection level |
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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: 20080312 Termination date: 20150215 |
|
| EXPY | Termination of patent right or utility model |