CN110601163A - Special overvoltage protection device - Google Patents
Special overvoltage protection device Download PDFInfo
- Publication number
- CN110601163A CN110601163A CN201911037581.5A CN201911037581A CN110601163A CN 110601163 A CN110601163 A CN 110601163A CN 201911037581 A CN201911037581 A CN 201911037581A CN 110601163 A CN110601163 A CN 110601163A
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- Prior art keywords
- piezoresistor
- bolt
- discharge
- mounting
- overvoltage protection
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Links
- 229910052573 porcelain Inorganic materials 0.000 claims abstract description 56
- 238000007599 discharging Methods 0.000 claims abstract description 23
- 230000005611 electricity Effects 0.000 claims abstract description 3
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 8
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 8
- 239000000919 ceramic Substances 0.000 claims description 6
- 239000011787 zinc oxide Substances 0.000 claims description 4
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 3
- 238000009434 installation Methods 0.000 description 9
- 230000001012 protector Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/04—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/04—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage
- H02H9/06—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage using spark-gap arresters
Landscapes
- Emergency Protection Circuit Devices (AREA)
Abstract
The invention provides a special overvoltage protection device, which relates to the technical field of electrical protection equipment and solves the technical problems of single protection function and narrow application range of the traditional overvoltage protection device in the prior art, and comprises a base, wherein the base is provided with a first gap porcelain cup and first to seventh piezoresistors, the first gap porcelain cup is provided with first to fourth discharge bolts, one ends of the first to fourth piezoresistors are respectively and electrically connected with the first to fourth discharge bolts, the other ends of the first to third piezoresistors are respectively and electrically connected with an A phase line, a B phase line and a C phase line of three-phase electricity, and the other end of the fourth piezoresistor is grounded; one ends of the fifth piezoresistor, the fourth piezoresistor and the fourth piezoresistor are respectively and electrically connected with the first discharging bolt, the second discharging bolt and the fourth discharging bolt, and the other ends of the fifth piezoresistor, the fourth piezoresistor and the fourth piezoresistor are all grounded; the invention has the advantages of various protection functions, wide application range and obvious overvoltage protection effect.
Description
Technical Field
The invention relates to the technical field of electrical protection equipment, in particular to a special overvoltage protection device.
Background
The three-phase overvoltage protector is a protection device for protecting the insulation of power equipment from overvoltage damage, and is mainly applied to power generation, power supply and power utilization power grids. The traditional three-phase overvoltage protector adopts a mode of gap discharge for dividing voltage for a zinc oxide valve plate to realize overvoltage protection, but the traditional three-phase overvoltage protector is often single in protection function, such as motor protection, power station protection, line protection, capacitance protection or generator protection, and the application range is narrow, and the application of multiple application environments cannot be met.
Disclosure of Invention
The invention aims to provide a special overvoltage protection device, which aims to solve the technical problems of single protection function and narrow application range of the traditional overvoltage protection device in the prior art; the invention provides a plurality of technical effects which can be produced by a preferred technical scheme in a plurality of technical schemes (four discharging bolts can form a three-dimensional triangular space gap, when in use, the first piezoresistor, the second piezoresistor and the third piezoresistor discharge to the fourth piezoresistor through the gap, and different values are configured, so that the overvoltage protection in different use ranges can be applied, the phenomena of leakage, overheating, explosion and the like caused by direct grounding of the fifth piezoresistor, the sixth piezoresistor and the seventh piezoresistor can be effectively avoided, the use process is safer, and the use period is longer; the second mounting chamber is used for mounting the second gap porcelain cup, and the accommodating chamber is used for mounting the fourth piezoresistor; the second gap porcelain cup is made of alumina ceramics and is resistant to high pressure and the like); see below for details.
In order to achieve the purpose, the invention provides the following technical scheme:
the invention provides a special overvoltage protection device, which comprises a base, wherein a piezoresistor and a first gap porcelain cup are arranged on the base, the piezoresistor comprises a first piezoresistor, a second piezoresistor, a third piezoresistor, a fourth piezoresistor, a fifth piezoresistor, a sixth piezoresistor and a seventh piezoresistor, a first discharge bolt, a second discharge bolt, a third discharge bolt and a fourth discharge bolt are arranged on the first gap porcelain cup, and the special overvoltage protection device comprises: one end of the first piezoresistor, one end of the second piezoresistor, one end of the third piezoresistor and one end of the fourth piezoresistor are respectively and electrically connected with the first discharging bolt, the second discharging bolt, the third discharging bolt and the fourth discharging bolt, the other end of the first piezoresistor, the other end of the second piezoresistor and the other end of the third piezoresistor are respectively and electrically connected with a phase line A, a phase line B and a phase line C of three-phase electricity, and the other end of the fourth piezoresistor is grounded; one end of the fifth piezoresistor, one end of the sixth piezoresistor and one end of the seventh piezoresistor are respectively and electrically connected with the first discharging bolt, the second discharging bolt and the third discharging bolt, and the other end of the fifth piezoresistor, the other end of the sixth piezoresistor and the other end of the seventh piezoresistor are all grounded.
Preferably, the first discharge bolt, the second discharge bolt, the third discharge bolt and the fourth discharge bolt are all disposed on a cup wall of the first gap porcelain cup, and a discharge end portion of the first discharge bolt, a discharge end portion of the second discharge bolt, a discharge end portion of the third discharge bolt and a discharge end portion of the fourth discharge bolt are all disposed in the first gap porcelain cup, so that a three-dimensional triangular space gap is formed between all discharge end portions.
Preferably, a first mounting cover, a second mounting cover and a third mounting cover are arranged on the top surface of the base, wherein: the fifth piezoresistor, the sixth piezoresistor and the seventh piezoresistor are respectively arranged in the first mounting cover, the second mounting cover and the third mounting cover.
Preferably, the base is provided with a first mounting cavity inside, and the first gap porcelain cup is arranged in the first mounting cavity.
Preferably, the first, second, third, fourth, fifth, sixth and seventh piezoresistors are all provided as zinc oxide piezoresistors; the first gap porcelain cup is made of alumina ceramics.
Preferably, be provided with first mount table, second mount table and third mount table on the top surface of base, wherein: the first piezoresistor, the second piezoresistor and the third piezoresistor are respectively arranged on the first mounting table, the second mounting table and the third mounting table.
Preferably, a fourth mounting table is arranged on the top surface of the base, and the fourth piezoresistor is arranged on the fourth mounting table.
Preferably, the base is further provided with a second gap porcelain cup, the fifth varistor, the sixth varistor and the seventh varistor are all grounded through the second gap porcelain cup, and a fifth discharge bolt and a sixth discharge bolt are oppositely arranged on a cup wall of the second gap porcelain cup, wherein: the fifth piezoresistor, the sixth piezoresistor and the seventh piezoresistor are electrically connected with the fifth discharge bolt, the sixth discharge bolt is electrically connected with a grounding terminal, and the discharge end part of the fifth discharge bolt and the discharge end part of the sixth discharge bolt are arranged inside the second gap porcelain cup.
Preferably, a second mounting cavity is arranged inside the base, and the second gap porcelain cup is arranged in the second mounting cavity; the inside of base is provided with the holding cavity, the fourth piezo-resistor sets up in the holding cavity.
Preferably, the second gap porcelain cup is made of alumina ceramics.
The special overvoltage protection device provided by the invention at least has the following beneficial effects:
the special overvoltage protection device comprises a base, wherein the base is provided with a piezoresistor and a first gap porcelain cup, the piezoresistor comprises a first to a seventh piezoresistor, and the base is used for supporting and installing the piezoresistor and the first gap porcelain cup; the first gap porcelain cup is provided with first to fourth discharge bolts, and the discharge bolts are used for electrically connecting corresponding devices; one ends of the first piezoresistor, the second piezoresistor and the fourth piezoresistor are respectively and electrically connected with the first discharging bolt, the fourth discharging bolt and the fourth discharging bolt, the other ends of the first piezoresistor, the second piezoresistor and the third piezoresistor are respectively and electrically connected with an A phase line, a B phase line and a C phase line of a three-phase power, the other end of the fourth piezoresistor is grounded, when the overvoltage protection circuit is used, the first piezoresistor, the second piezoresistor and the third piezoresistor discharge the fourth piezoresistor through gaps, and the overvoltage protection circuit can protect overvoltage in different application ranges by configuring different used values; one ends of the fifth piezoresistor to the seventh piezoresistor are electrically connected with the first discharging bolt to the third discharging bolt respectively, the other ends of the fifth piezoresistor to the seventh piezoresistor are grounded, and the fifth piezoresistor, the sixth piezoresistor and the seventh piezoresistor are matched with the first piezoresistor, the second piezoresistor, the third piezoresistor and the fourth piezoresistor to adjust the resistance value of the grounding resistor, so that the device can adapt to various application environments and provide omnibearing overvoltage protection; the invention has various protection functions, wide application range and obvious overvoltage protection effect.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural view of example 1 of the present invention;
FIG. 2 is a schematic bottom view of the structure of example 1 of the present invention;
FIG. 3 is a schematic top view of the structure of embodiment 1 of the present invention;
FIG. 4 is a schematic cross-sectional view taken along line b-b of FIG. 3 in accordance with the present invention;
FIG. 5 is a schematic structural view of a first gap porcelain cup according to embodiment 1 of the present invention;
FIG. 6 is a schematic circuit diagram of embodiment 1 of the present invention;
FIG. 7 is a schematic structural view of example 2 of the present invention;
FIG. 8 is a schematic bottom view of embodiment 2 of the present invention;
FIG. 9 is a schematic top view of the structure of embodiment 2 of the present invention;
FIG. 10 is a schematic cross-sectional view taken along line a-a of FIG. 9 in accordance with the present invention;
FIG. 11 is a schematic structural view of a first gap porcelain cup in embodiment 2 of the present invention;
fig. 12 is a schematic structural view of a second gap porcelain cup according to embodiment 2 of the present invention;
fig. 13 is a circuit schematic diagram of embodiment 2 of the present invention.
Reference numerals
1. A base; 2. a first gap porcelain cup; 21. a first discharge bolt; 22. a second discharge bolt; 23. a third discharge bolt; 24. a fourth discharge bolt; 3. a second gap porcelain cup; 31. a fifth discharge bolt; 32. a sixth discharge bolt; 4. a first mounting cover; 41. mounting holes; 5. a second mounting cover; 6. a third mounting cover; 7. a first mounting table; 8. a second mounting table; 9. a third mounting table; 10. a ground terminal; 11. a fourth mounting table; r1, a first varistor; r2, a second varistor; r3, third varistor; r4, fourth varistor; r5, fifth varistor; r6, sixth varistor; r7 and a seventh piezoresistor.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.
Example 1:
the invention provides a special overvoltage protection device, as shown in fig. 1 to 6, the special overvoltage protection device comprises a base 1, the base 1 is provided with a piezoresistor and a first gap porcelain cup 2, the piezoresistor comprises a first piezoresistor R1, a second piezoresistor R2, a third piezoresistor R3, a fourth piezoresistor R4, a fifth piezoresistor R5, a sixth piezoresistor R6 and a seventh piezoresistor R7, the first gap porcelain cup 2 is provided with a first discharge bolt 21, a second discharge bolt 22, a third discharge bolt 23 and a fourth discharge bolt 24, wherein: one end of the first piezoresistor R1, one end of the second piezoresistor R2, one end of the third piezoresistor R3 and one end of the fourth piezoresistor R4 are respectively and electrically connected with the first discharge bolt 21, the second discharge bolt 22, the third discharge bolt 23 and the fourth discharge bolt 24, the other end of the first piezoresistor R1, the other end of the second piezoresistor R2 and the other end of the third piezoresistor R3 are respectively and electrically connected with the phase line A, the phase line B and the phase line C of the three-phase power, and the other end of the fourth piezoresistor R4 is electrically connected with the grounding terminal 10; one end of the fifth varistor R5, one end of the sixth varistor R6, and one end of the seventh varistor R7 are electrically connected to the first discharge bolt 21, the second discharge bolt 22, and the third discharge bolt 23, respectively, and the other end of the fifth varistor R5, the other end of the sixth varistor R6, and the other end of the seventh varistor R7 are all grounded.
In the using process of the invention, the first piezoresistor R1, the second piezoresistor R2, the third piezoresistor R3 and the fourth piezoresistor R4 are connected through the first gap porcelain cup 2 and are not directly grounded, when overvoltage is generated, the first piezoresistor R1, the second piezoresistor R2 and the third piezoresistor R3 discharge to the fourth piezoresistor R4 through gaps, at the moment, the fifth piezoresistor R5, the sixth piezoresistor R6 and the seventh piezoresistor R7 are matched with the first piezoresistor to the fourth piezoresistor, and the resistance value of the grounding resistor is adjusted, so that the invention can be applied to various application scenes and provide omnibearing overvoltage protection.
As an alternative embodiment, the first discharge bolt 21, the second discharge bolt 22, the third discharge bolt 23, and the fourth discharge bolt 24 are all disposed on the cup wall of the first gap porcelain cup 2, and the discharge end portion of the first discharge bolt 21, the discharge end portion of the second discharge bolt 22, the discharge end portion of the third discharge bolt 23, and the discharge end portion of the fourth discharge bolt 24 are all disposed within the first gap porcelain cup 2 such that a three-dimensional triangular space gap is formed between all the discharge end portions.
As shown in fig. 5, the first discharge bolt 21, the second discharge bolt 22, and the fourth discharge bolt 24 are circumferentially disposed on the side wall of the first gap porcelain cup 2, and the third discharge bolt 23 is disposed on the top wall of the first gap porcelain cup 2.
As an optional embodiment, a first mounting cover 4, a second mounting cover 5 and a third mounting cover 6 are disposed on the top surface of the base 1, and the first mounting cover 4, the second mounting cover 5 and the third mounting cover 6 are uniformly arranged along the same straight direction, wherein: the fifth piezoresistor R5, the sixth piezoresistor R6 and the seventh piezoresistor R7 are respectively arranged in the first mounting cover 4, the second mounting cover 5 and the third mounting cover 6, mounting holes 41 are respectively arranged at the tops of the first mounting cover 4, the second mounting cover 5 and the third mounting cover 6, the fifth piezoresistor R5, the sixth piezoresistor R6 and the seventh piezoresistor R7 are respectively fixed with the first mounting cover 4, the second mounting cover 5 and the third mounting cover 6 through corresponding mounting holes 41, and the fifth piezoresistor R5, the sixth piezoresistor R6 and the seventh piezoresistor R7 are respectively encapsulated with the first mounting cover 4, the second mounting cover 5 and the third mounting cover 6 through epoxy resin which can seal the mounting covers on one hand and play a role of insulation on the other hand.
As an alternative embodiment, the base 1 is provided with a first mounting chamber inside, and the first gap porcelain cup 2 is provided in the first mounting chamber.
As shown in fig. 2, the first mounting chamber is located below the third mounting stage 9.
As an alternative embodiment, the first varistor R1, the second varistor R2, the third varistor R3, the fourth varistor R4, the fifth varistor R5, the sixth varistor R6 and the seventh varistor R7 are all provided as zinc oxide varistors.
The first gap porcelain cup 2 is made of alumina ceramics, and the first gap porcelain cup 2 is a porcelain which is sintered into a cup shape by using 95% of alumina ceramics, is resistant to high pressure and is used for connecting a high-pressure phase and a phase and the ground.
As an alternative embodiment, a first mounting table 7, a second mounting table 8 and a third mounting table 9 are provided on the top surface of the base 1, wherein: the first varistor R1, the second varistor R2, and the third varistor R3 are disposed on the first mount table 7, the second mount table 8, and the third mount table 9, respectively.
The first installation platform 7, the second installation platform 8 and the third installation platform 9 are uniformly arranged along the same straight line, and the straight line where the first installation platform 7, the second installation platform 8 and the third installation platform 9 are located is parallel to the straight line where the first installation cover 4, the second installation cover 5 and the third installation cover 6 are located.
As an alternative embodiment, a fourth mounting table 11 is provided on the top surface of the base 1, a fourth varistor R4 is provided on the fourth mounting table 11, and the fourth mounting table 11 is provided on one side of the third mounting table 9 and the third mounting cover 6.
Example 2:
the difference between example 2 and example 1 is: as shown in fig. 7-13, the base 1 is further installed with a second gap porcelain cup 3, and the fifth varistor R5, the sixth varistor R6 and the seventh varistor R7 are all grounded through the second gap porcelain cup 3, and a fifth discharge bolt 31 and a sixth discharge bolt 32 are oppositely arranged on the cup wall of the second gap porcelain cup 3, wherein: the fifth varistor R5, the sixth varistor R6, and the seventh varistor R7 are all electrically connected to the fifth discharge bolt 31, the sixth discharge bolt 32 is electrically connected to the ground terminal 10, and a discharge end portion of the fifth discharge bolt 31 and a discharge end portion of the sixth discharge bolt 32 are all disposed inside the second gap porcelain cup 3.
As shown in fig. 11, the first discharge bolt 21, the third discharge bolt 23, and the fourth discharge bolt 24 are circumferentially distributed on the outer wall of the first gap porcelain cup 2, and the second discharge bolt 22 is provided on the top wall of the first gap porcelain cup 2.
As an alternative embodiment, as shown in fig. 7 and 8, a second mounting chamber is arranged inside the base 1, the second gap porcelain cup 3 is arranged in the second mounting chamber, the second mounting chamber is arranged below between the first mounting cover 4 and the second mounting cover 5, an accommodating chamber is arranged inside the base 1, and the fourth piezoresistor R4 is arranged in the accommodating chamber, the accommodating chamber is arranged below between the second mounting cover 5 and the third mounting cover 6.
The first mounting chamber is arranged below the second mounting stage 8.
As an alternative embodiment, the second gap porcelain cup 3 is made of alumina ceramic.
Embodiment 2 compares embodiment 1, through setting up second gap porcelain cup 3, make fifth piezo-resistor R5, sixth piezo-resistor R6 and seventh piezo-resistor R7 directly not ground connection, can effectively avoid because of fifth piezo-resistor R5, sixth piezo-resistor R6 and seventh piezo-resistor R7 directly ground connection the overcurrent phenomenon that produces to avoid the emergence of phenomenons such as leaking, overheated, explosion, and then effectively prolonged life cycle, greatly improved the safety in utilization.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (10)
1. The utility model provides a special type overvoltage protection device, its characterized in that, includes the base, the pedestal mounting is provided with piezo-resistor and first clearance porcelain cup, piezo-resistor includes first piezo-resistor, second piezo-resistor, third piezo-resistor, fourth piezo-resistor, fifth piezo-resistor, sixth piezo-resistor and seventh piezo-resistor, be provided with first bolt, second discharge bolt, third discharge bolt and fourth discharge bolt on the first clearance porcelain cup, wherein:
one end of the first piezoresistor, one end of the second piezoresistor, one end of the third piezoresistor and one end of the fourth piezoresistor are respectively and electrically connected with the first discharging bolt, the second discharging bolt, the third discharging bolt and the fourth discharging bolt, the other end of the first piezoresistor, the other end of the second piezoresistor and the other end of the third piezoresistor are respectively and electrically connected with a phase line A, a phase line B and a phase line C of three-phase electricity, and the other end of the fourth piezoresistor is grounded;
one end of the fifth piezoresistor, one end of the sixth piezoresistor and one end of the seventh piezoresistor are respectively and electrically connected with the first discharging bolt, the second discharging bolt and the third discharging bolt, and the other end of the fifth piezoresistor, the other end of the sixth piezoresistor and the other end of the seventh piezoresistor are all grounded.
2. The special overvoltage protection device of claim 1, wherein the first discharge bolt, the second discharge bolt, the third discharge bolt and the fourth discharge bolt are all disposed on a cup wall of the first gap porcelain cup, and a discharge end portion of the first discharge bolt, a discharge end portion of the second discharge bolt, a discharge end portion of the third discharge bolt and a discharge end portion of the fourth discharge bolt are all disposed within the first gap porcelain cup, so that a three-dimensional triangular space gap is formed between all discharge end portions.
3. The special overvoltage protection device of claim 1 wherein a first mounting cup, a second mounting cup and a third mounting cup are disposed on a top surface of said base, wherein:
the fifth piezoresistor, the sixth piezoresistor and the seventh piezoresistor are respectively arranged in the first mounting cover, the second mounting cover and the third mounting cover.
4. The special overvoltage protection device of claim 1 wherein said base is internally provided with a first mounting chamber, said first gap porcelain cup being disposed within said first mounting chamber.
5. The special overvoltage protection device of claim 1, wherein the first, second, third, fourth, fifth, sixth and seventh piezoresistors are each provided as zinc oxide piezoresistors;
the first gap porcelain cup is made of alumina ceramics.
6. The special overvoltage protection device of claim 1 wherein a first mounting station, a second mounting station and a third mounting station are disposed on a top surface of said base, wherein:
the first piezoresistor, the second piezoresistor and the third piezoresistor are respectively arranged on the first mounting table, the second mounting table and the third mounting table.
7. The special overvoltage protection device of claim 1 wherein a fourth mounting block is disposed on a top surface of said base, said fourth varistor being disposed on said fourth mounting block.
8. The special overvoltage protection device according to any one of claims 1 to 6, wherein a second gap porcelain cup is further installed on the base, the fifth varistor, the sixth varistor and the seventh varistor are all grounded through the second gap porcelain cup, a fifth discharge bolt and a sixth discharge bolt are oppositely arranged on a cup wall of the second gap porcelain cup, wherein:
the fifth piezoresistor, the sixth piezoresistor and the seventh piezoresistor are electrically connected with the fifth discharge bolt, the sixth discharge bolt is electrically connected with a grounding terminal, and the discharge end part of the fifth discharge bolt and the discharge end part of the sixth discharge bolt are arranged inside the second gap porcelain cup.
9. The special overvoltage protection device of claim 8, wherein a second mounting chamber is disposed within the base, the second gap porcelain cup being disposed within the second mounting chamber;
the inside of base is provided with the holding cavity, the fourth piezo-resistor sets up in the holding cavity.
10. The special overvoltage protection device of claim 8 wherein said second gap porcelain cup is made of alumina ceramic.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911037581.5A CN110601163A (en) | 2019-10-29 | 2019-10-29 | Special overvoltage protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911037581.5A CN110601163A (en) | 2019-10-29 | 2019-10-29 | Special overvoltage protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110601163A true CN110601163A (en) | 2019-12-20 |
Family
ID=68851899
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911037581.5A Pending CN110601163A (en) | 2019-10-29 | 2019-10-29 | Special overvoltage protection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110601163A (en) |
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2019
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| CN201910617U (en) * | 2010-12-27 | 2011-07-27 | 安徽三和电力技术有限公司 | Composite monitor type voltage limiting device |
| CN203119468U (en) * | 2013-02-19 | 2013-08-07 | 安徽一天电气技术有限公司 | Three-phase combined overvoltage protector |
| CN210577794U (en) * | 2019-10-29 | 2020-05-19 | 安徽中电电气有限公司 | Special overvoltage protection device |
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