CN205070415U - Single -phase overvoltage protector - Google Patents
Single -phase overvoltage protector Download PDFInfo
- Publication number
- CN205070415U CN205070415U CN201520754666.6U CN201520754666U CN205070415U CN 205070415 U CN205070415 U CN 205070415U CN 201520754666 U CN201520754666 U CN 201520754666U CN 205070415 U CN205070415 U CN 205070415U
- Authority
- CN
- China
- Prior art keywords
- voltage
- protection
- voltage protection
- overvoltage
- protective device
- 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
Links
- 230000001012 protector Effects 0.000 title abstract description 4
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims abstract description 24
- 239000000463 material Substances 0.000 claims abstract description 22
- 239000011787 zinc oxide Substances 0.000 claims abstract description 12
- 229910010271 silicon carbide Inorganic materials 0.000 claims abstract description 6
- 230000001681 protective effect Effects 0.000 claims description 15
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 3
- 238000010030 laminating Methods 0.000 claims description 2
- 229910052709 silver Inorganic materials 0.000 claims description 2
- 239000004332 silver Substances 0.000 claims description 2
- 230000007935 neutral effect Effects 0.000 abstract description 8
- 230000015556 catabolic process Effects 0.000 description 3
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical group [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910044991 metal oxide Inorganic materials 0.000 description 2
- 150000004706 metal oxides Chemical class 0.000 description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
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- Emergency Protection Circuit Devices (AREA)
Abstract
The utility model provides a single -phase overvoltage protector, including voltage protection subassembly and non -linear resistor, the voltage protection subassembly includes the first portion of zinc oxide material and the second portion of carborundum material, first portion and second portion fixed connection, first portion and second portion electric connection, non -linear resistor's one end with second portion electric connection, this kind of single -phase overvoltage protector uses the voltage protection subassembly that combines two kinds of materials in zinc oxide and the carborundum, has the protection threshold values and hangs down, and the residual voltage is low after switching on, when emergence overvoltage especially single -phase overvoltage, the voltage protection subassembly between neutral point and the ground switches on, can eliminate the voltage excursion phenomenon of neutral point, therefore the voltage protection threshold values can be selected according to the phase voltage to reduce the threshold values of voltage protection widely, improved the precision and the response speed of protection, guaranteed overvoltage protection's reliability.
Description
Technical field
The utility model relates to voltage protection technical field, particularly relates to a kind of individual phase over voltage protective device.
Background technology
Current over-pressure safety device forms based on metal oxide zinc or by voltage switch type assembly and votage limit type component design mostly, the value of depressor protective valve excessively that the former is made up of metal oxide is high, protection precision is poor, response speed is slow, protection can be held little, due in the distribution system of China, the not direct ground connection of below 110kV neutral point, when there is overvoltage, zinc oxide arrester must bear the long duration of action of single-phase earthing arc overvoltage, the setting of its threshold voltage must consider the impact of chargeability, cause protected effect very poor, and energy does not reach the time requirement of switching overvoltage yet, therefore this zinc oxide arrester cannot realize superpotential reliable real-time guard, over-voltage breakdown accident occurs repeatedly, and the overvoltage protector that voltage switch type assembly and votage limit type assembly are formed is because employing electronic component, though improve the accuracy of response speed and protection threshold values, electronic component often occurs breakdown, causes failure rate to remain high.
Utility model content
The technical problems to be solved in the utility model is: in order to solve, over-pressure safety device of the prior art protection threshold values is high, protection precision is poor; response speed is slow, protection can hold the problems such as little, protected effect is poor, easily breakdown, failure rate is high, and the utility model provides a kind of individual phase over voltage protective device and solves the problems referred to above.
The utility model solves the technical scheme that its technical problem adopts: a kind of individual phase over voltage protective device; comprise voltage protection component and nonlinear resistance; described voltage protection component comprises the Part I of zinc oxide material and the Part II of silicon carbide material; described Part I is fixedly connected with Part II; described Part I and Part II are electrically connected, and one end and the described Part II of described nonlinear resistance are electrically connected.
As preferably, described Part I and Part II fit tightly.
As preferably, between the laminating interface of described Part I and Part II, be also filled with conductive layer.
As preferably, the material of described conductive layer is silver.
As preferably, described Part I is cylinder, described Part II is hollow circular cylinder, and the internal diameter of described Part II is consistent with the diameter of described Part I, and the inwall of described Part II and the sidewall of Part I fit tightly and described conductive layer is arranged between which.
As preferably, the material of described nonlinear resistance is zinc oxide.
The beneficial effects of the utility model are, this individual phase over voltage protective device uses the voltage protection component in conjunction with zinc oxide and carborundum bi-material, and have protection threshold values low, after conducting, residual voltage is low; When generation overvoltage especially single-phase overvoltage; voltage protection component conducting between neutral point and ground; the variation phenomenon of neutral point can be eliminated; therefore voltage protection threshold values can be selected according to phase voltage; thus greatly reduce the threshold values of voltage protection; improve precision and the response speed of protection, ensure that the reliability of overvoltage protection.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is further illustrated.
Fig. 1 is the structural representation of the optimum embodiment of individual phase over voltage protective device of the present utility model.
Fig. 2 is the structural representation of the voltage protection component of the optimum embodiment of individual phase over voltage protective device of the present utility model.
In figure 1, nonlinear resistance, 2, Part I, 3, Part II.
Embodiment
Be described below in detail embodiment of the present utility model, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Being exemplary below by the embodiment be described with reference to the drawings, only for explaining the utility model, and can not being interpreted as restriction of the present utility model.On the contrary, embodiment of the present utility model comprise fall into attached claims spirit and intension within the scope of all changes, amendment and equivalent.
In description of the present utility model, it will be appreciated that, term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width ", " thickness ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end " " interior ", " outward ", " axis ", " radial direction ", orientation or the position relationship of the instruction such as " circumference " are based on orientation shown in the drawings or position relationship, only the present invention for convenience of description and simplified characterization, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore limitation of the present invention can not be interpreted as.
In addition, term " first ", " second " etc. only for describing object, and can not be interpreted as instruction or hint relative importance.In description of the present utility model, it should be noted that, unless otherwise clearly defined and limited, term " is connected ", " connection " should be interpreted broadly, such as, can be fixedly connected with, also can be removably connect, or connect integratedly; Can be mechanical connection, also can be electrical connection; Can be directly be connected, also indirectly can be connected by intermediary.For the ordinary skill in the art, concrete condition the concrete meaning of above-mentioned term in the utility model can be understood.In addition, in description of the present utility model, except as otherwise noted, the implication of " multiple " is two or more.
As shown in Figure 1, the utility model provides a kind of individual phase over voltage protective device, comprise the nonlinear resistance 1 that voltage protection component and material are zinc oxide, voltage protection component comprises the Part I 2 of zinc oxide material and the Part II 3 of silicon carbide material, Part I 2 is fixedly connected with Part II 3, Part I 2 and Part II 3 are electrically connected, one end and the Part II 3 of nonlinear resistance 1 are electrically connected, one end is connected with live wire in addition, Part I 2 is connected with ground wire, Part I 2 is drawn with Part II 3 and is connected with the neutral line, it is large that zinc oxide material has energy capacitance, threshold voltage is high, residual voltage is low, temperature coefficient is the characteristics such as negative value, can when voltage be greater than its threshold voltage, electric energy is discharged, thus realize overvoltage protection, but its threshold values is higher, protection precision is not enough, and carbofrax material to have threshold voltage low, the more high characteristic of residual voltage after conducting, this bi-material has obvious complementary characteristic, therefore by this bi-material according to certain proportionality coefficient with the use of, composition voltage protection component, this voltage protection component is made to have the low feature of residual voltage after the low and conducting of protection threshold values, the accounting coefficient of this bi-material in voltage protection component can be selected according in different electric pressure, like this when there is single-phase overvoltage, voltage protection component conducting between the neutral line and ground wire, thus eliminate the variation phenomenon of neutral point, therefore voltage protection threshold values can be selected according to phase voltage, so greatly reduce the threshold values of voltage protection, improve precision and the response speed of protection, ensure that the reliability of overvoltage protection.
As shown in Figure 2, by sintering and forging and stamping, make Part I 2 for cylinder, Part II 3 is hollow circular cylinder, and the internal diameter of Part II 3 is consistent with the diameter of Part I 2, and the inwall of Part II 3 and the sidewall of Part I 2 fit tightly, the inwall of Part II 3 or the sidewall of Part I 2 are coated with and spread silver powder, form conductive layer, improve conductivity, improve the performance of product further.
In the description of this specification, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present utility model or example.In this manual, identical embodiment or example are not necessarily referred to the schematic representation of described term.And the specific features of description, structure, material or feature can combine in an appropriate manner in any one or more embodiment or example.
With above-mentioned according to desirable embodiment of the present utility model for enlightenment, by above-mentioned description, relevant staff in the scope not departing from this utility model technological thought, can carry out various change and amendment completely.The technical scope of this utility model is not limited to the content on specification, must determine its technical scope according to right.
Claims (6)
1. an individual phase over voltage protective device; it is characterized in that: comprise voltage protection component and nonlinear resistance; described voltage protection component comprises the Part I of zinc oxide material and the Part II of silicon carbide material; described Part I is fixedly connected with Part II; described Part I and Part II are electrically connected, and one end and the described Part II of described nonlinear resistance are electrically connected.
2. individual phase over voltage protective device as claimed in claim 1, is characterized in that: described Part I and Part II fit tightly.
3. individual phase over voltage protective device as claimed in claim 2, is characterized in that: be also filled with conductive layer between the laminating interface of described Part I and Part II.
4. individual phase over voltage protective device as claimed in claim 3, is characterized in that: the material of described conductive layer is silver.
5. the individual phase over voltage protective device as described in claim 3 or 4; it is characterized in that: described Part I is cylinder; described Part II is hollow circular cylinder; the internal diameter of described Part II is consistent with the diameter of described Part I, and the inwall of described Part II and the sidewall of Part I fit tightly and described conductive layer is arranged between which.
6. individual phase over voltage protective device as claimed in claim 5, is characterized in that: the material of described nonlinear resistance is zinc oxide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520754666.6U CN205070415U (en) | 2015-09-25 | 2015-09-25 | Single -phase overvoltage protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520754666.6U CN205070415U (en) | 2015-09-25 | 2015-09-25 | Single -phase overvoltage protector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205070415U true CN205070415U (en) | 2016-03-02 |
Family
ID=55396923
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520754666.6U Expired - Fee Related CN205070415U (en) | 2015-09-25 | 2015-09-25 | Single -phase overvoltage protector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205070415U (en) |
-
2015
- 2015-09-25 CN CN201520754666.6U patent/CN205070415U/en not_active Expired - Fee Related
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160302 |