CN108597702A - Overvoltage protection device - Google Patents
Overvoltage protection device Download PDFInfo
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- CN108597702A CN108597702A CN201810508565.9A CN201810508565A CN108597702A CN 108597702 A CN108597702 A CN 108597702A CN 201810508565 A CN201810508565 A CN 201810508565A CN 108597702 A CN108597702 A CN 108597702A
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- electrode
- insulation division
- overvoltage protection
- protection device
- hole
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- 238000009413 insulation Methods 0.000 claims abstract description 59
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims abstract description 30
- 239000011787 zinc oxide Substances 0.000 claims abstract description 15
- 238000009434 installation Methods 0.000 abstract description 12
- 230000001012 protector Effects 0.000 description 11
- 230000006378 damage Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- 238000011900 installation process Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 230000001681 protective effect Effects 0.000 description 3
- 208000025274 Lightning injury Diseases 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C7/00—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
- H01C7/10—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material voltage responsive, i.e. varistors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C1/00—Details
- H01C1/02—Housing; Enclosing; Embedding; Filling the housing or enclosure
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C1/00—Details
- H01C1/14—Terminals or tapping points or electrodes specially adapted for resistors; Arrangements of terminals or tapping points or electrodes on resistors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C7/00—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
- H01C7/10—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material voltage responsive, i.e. varistors
- H01C7/102—Varistor boundary, e.g. surface layers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C7/00—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
- H01C7/10—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material voltage responsive, i.e. varistors
- H01C7/12—Overvoltage protection resistors
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Thermistors And Varistors (AREA)
Abstract
The present invention relates to a kind of overvoltage protection devices.A kind of overvoltage protection device, first electrode have the through-hole through the first electrode opposite end；First insulation division is set to the opposite both ends of the first electrode, and covers the through-hole；Second electrode is set in the through-hole, and at least one end of the second electrode is fixedly connected on first insulation division, and at least one end of the second electrode is pierced by from first insulation division, also has gap between the second electrode and the through-hole wall；Zinc oxide valve body is set in the gap between the second electrode and the through-hole wall.Overvoltage protection device provided by the invention is fixedly connected without passing through screw with external equipment, can be integrally connected with external equipment, easy for installation and be hardly damaged to realize that installation is fixed and electrical connection simultaneously.
Description
Technical field
The present invention relates to protector fields, more particularly to a kind of overvoltage protection device.
Background technology
The protection of high-tension cable sheath at present generally uses zinc oxide valve plate overvoltage protection device.In normal working voltage
Under, high resistance is presented in protector, extremely small by the operating current of protector, is substantially at cut-off state, makes cable conductor
Protective metal shell and the earth between not at access.When having lightning stroke in cable conductor or Operating Over Voltage Surge wave is propagated, cable
Protective metal shell can incude generation impulse overvoltage, when reaching the origination action voltage of protector, the resistance value of protector is very
It is fast to decline, make to be linked to be access between sheath and the earth, the high current that lightning stroke generates is allowed to flow into the earth through protector by protective metal shell,
To make insulating sheath from the destruction to overvoltage.After having served as loss of voltage, resistor valve sheet restores its high-resistance characteristic again,
Protector and cable run are restored to normal operating conditions again.
Current overvoltage protection device, upper and lower ends are fixedly connected using screw thread with external equipment, such as are fixedly connected on
In electronic box, the mode of threaded connection installs inconvenience, and is easily damaged after being used for multiple times.
Invention content
Based on this, it is necessary to which when being connected and fixed using screw and external equipment for overvoltage protection device, threaded connection is made
Inconvenient at installation and flimsy problem, provides that a kind of installation is simple and non-damageable overvoltage protection device.
A kind of overvoltage protection device, which is characterized in that including first electrode, have through the first electrode opposite end
Through-hole；First insulation division is set to the opposite both ends of the first electrode, and covers the through-hole；Second electrode is set to the through-hole
Interior, at least one end of the second electrode is fixedly connected on first insulation division, at least one end of the second electrode from this first absolutely
Edge is pierced by, and also has gap between the second electrode and the through-hole wall；Zinc oxide valve body, is set to the second electrode and is somebody's turn to do
In gap between through-hole wall.
Above-mentioned overvoltage protection device, by opening up through-hole on the first electrode, the first insulation division is arranged in first electrode
Second electrode so that there are one accommodating spaces for first electrode tool, then is set to the accommodating of first electrode by both ends to cover through-hole
Space, and at least one end is pierced by from the first insulation division outside to be revealed in, zinc oxide valve body is set in the accommodating space, and is located at
Between first electrode and second electrode.The overvoltage protection device of the present invention, simple in structure and compact, first electrode and the second electricity
Best small part is exposed outside, and is fixedly connected with external equipment without passing through screw, can be integrally connected with external equipment, from
And realize that installation is fixed and electrical connection simultaneously, it is easy for installation and be hardly damaged.
The above-mentioned through-hole of above-mentioned first electrode is round hole in one of the embodiments, and above-mentioned second electrode is in the form of a column,
And above-mentioned second electrode extends along the central axes of above-mentioned through-hole.
The radial cross-sectional shape of above-mentioned first electrode is in annular shape in one of the embodiments,.
Above-mentioned second electrode has the first connecting pin and opposite with first connecting pin the in one of the embodiments,
Two connecting pins, which is pierced by from above-mentioned first insulation division, and is fixedly connected on above-mentioned first insulation division, this second
Connecting pin is fixedly connected with another above-mentioned first insulation division.
Above-mentioned second connection end is pierced by from above-mentioned first insulation division in one of the embodiments,.
Above-mentioned first insulation division is set in the above-mentioned through-hole of above-mentioned first electrode in one of the embodiments, and with
The inner wall of above-mentioned first electrode connects.
The outer end face of above-mentioned first insulation division is concordant with the end face of above-mentioned first electrode in one of the embodiments,.
The end face of above-mentioned second electrode is concordant with the above-mentioned outer end face of first insulation division in one of the embodiments,.
It is sealed between above-mentioned first electrode and above-mentioned second electrode and above-mentioned first insulation division in one of the embodiments,
Connection.
Above-mentioned overvoltage protection device further includes the second insulation division in one of the embodiments, and second insulation division is along week
To being coated on above-mentioned first electrode.
Description of the drawings
Fig. 1 is the structural schematic diagram of the overvoltage protection device of one embodiment of the invention；
Fig. 2 is the structural schematic diagram at another visual angle of overvoltage protection device shown in FIG. 1.
Specific implementation mode
To facilitate the understanding of the present invention, below with reference to relevant drawings to invention is more fully described.In attached drawing
Give the better embodiment of the present invention.But the present invention can realize in many different forms, however it is not limited to herein
Described embodiment.On the contrary, the purpose of providing these embodiments is that making to understand more the disclosure
Add thorough and comprehensive.
It should be noted that when element is referred to as " being fixed on " another element, it can be directly on another element
Or there may also be elements placed in the middle.When an element is considered as " connection " another element, it can be directly connected to
To another element or it may be simultaneously present centering elements.Term as used herein "inner", "outside", "left", "right" and
Similar statement for illustrative purposes only, is not offered as being unique embodiment.
Technical solution in facilitate the understanding of the present invention, before explanation is developed in details, first to existing overvoltage
The structure of protector illustrates.Existing overvoltage protection device has insulation shell, is internally provided with positioned at zinc oxide valve plate
The electrode of upper and lower both sides, the corresponding both ends of insulation division open up screw hole, to use screw to draw electrode inside insulation division.Appear
Segment screw outside insulation shell can not only realize the effect that electrode is electrically connected with external equipment, secondly can also play guarantor
The effect that shield device is fixedly connected with external equipment.
Present inventor it has been investigated that, in traditional overvoltage protection device manufacturing process, need in insulation division two
End opens up screw hole, increases the difficulty of manufacturing process, and in use, is susceptible to screw extraction or damage, or
The case where can not being repaired due to screw damage causes electrode damage.
Accordingly, it is desirable to provide a kind of overvoltage protection device, keeps manufacturing process simple, and be hardly damaged electrode in installation process
Or other parts.
As shown in Figure 1, the overvoltage protection device 100 of one embodiment of the invention, including first electrode 10, second electrode 20,
First insulation division 30 and zinc oxide valve body 40.Overvoltage protection device 100 utilizes the nonlinear wind vibration of zinc oxide valve body, outside
Portion's cable is struck by lightning or when Operating Over Voltage Surge, and first electrode 10 and second electrode 20 are switched on using zinc oxide valve body,
Make to be linked to be access between cable and the earth, to protect cable.
There is first electrode 10 through-hole 11 through 10 opposite end of first electrode, the first insulation division 30 to be set to the first electricity
The opposite end of pole 10, and through-hole 11 is covered, second electrode 20 is set in through-hole 11, and at least one end of second electrode 20 is fixed
It is connected to the first insulation division 30, at least one end of second electrode 20 is pierced by from the first insulation division 30, second electrode 20 and through-hole 11
There is gap 12, zinc oxide valve body 40 are set between inner wall in the gap 12 between 11 inner wall of second electrode 20 and through-hole.It answers
When understanding, zinc oxide valve body 40 is contacted with first electrode 10 and second electrode 20, first electrode 10 and second is connected
Electrode 20 is realized and is linked to be access between cable and the earth.
By opening up through-hole 11 in first electrode 10, the first insulation division 30 is arranged at the both ends of first electrode 10 to cover
Second electrode 20 so that there are one accommodating spaces for the tool of first electrode 10, then is set to the accommodating sky of first electrode 10 by through-hole 11
Between, and at least one end is pierced by from the first insulation division 30 outside to be revealed in, zinc oxide valve body 40 is set in the accommodating space, and position
Between first electrode 10 and second electrode 20.The overvoltage protection device 100 of the present invention, simple in structure and compact, the first electricity
Pole 10 and second electrode 20 are at least partly exposed outside, and are fixedly connected with external equipment without passing through screw, can integrally with outside
Equipment is connected, easy for installation and be hardly damaged to realize that installation is fixed and electrical connection simultaneously.
As depicted in figs. 1 and 2, in one embodiment, the through-hole 11 of first electrode 10 is round hole, and second electrode 20 is in
It is cylindric, and second electrode 20 extends along the central axes of through-hole 11.This setting can make between first electrode 10 and second electrode 20
The uniform gap formed, so that overvoltage protection device 100 realizes stable protection feature, and can be with zinc oxide valve body 40
Shape matches, and is more advantageous to the installation of zinc oxide valve body 40.
Further, the radial cross-sectional shape of first electrode 10 is in annular shape.This shape can make overvoltage protection device 100
Structure it is compacter, it is smooth and conveniently with external equipment installation process, and rounded outer surface is not easy to keep first electrode 10 impaired.
Referring to Fig. 1, in one embodiment, second electrode 20 has the first connecting pin 21 and second connection end
22, the first connecting pin 21 is pierced by from one first insulation division 30, and is fixed on first insulation division 30, second connection end 22 with it is another
First insulation division 30 is fixedly connected.This set-up mode fixes the both ends of second electrode 20 respectively, keeps second electrode 20 fixed,
Second electrode 20 need not use other fixing pieces or fixed form to be just fixed in the through-hole 11 of first electrode 10, fixed form
It is simple and reliable.
Further, second connection end 22 is pierced by from the first insulation division 30.The both ends that overvoltage protection device 100 is arranged have
The first electrode 10 and the of one end in 100 installation process of voltage protector, can may be selected in first electrode 10 and second electrode 20
Two electrodes 20 are electrically connected with external equipment, and the first electrode 10 at both ends and second electrode 20 can also be made to be electrically connected with external equipment
It connects, so that first electrode 10 and second electrode 20 and external equipment fitness are high, and is electrically connected more reliable and more stable.
In one embodiment, the first insulation division 30 is set in the through-hole 11 of first electrode 10, and in through-hole 11
Wall connects.It is outer that this set-up mode can be such that the end face of first electrode 10 is revealed in, and first electrode 10 can simultaneously exist with second electrode 20
Side or opposite both sides are electrically connected and are fixedly mounted with external equipment, this electrical connection and fixed installation mode are simpler
It is convenient.Specifically, the first insulation division 30 can be Nian Jie etc. with the inner wall connection type of through-hole 11.
Further, the outer end face of the first insulation division 10 is concordant with the end face of first electrode 10.This set-up mode can be maximum
Utilize the space in first electrode 10 with changing, and when overvoltage protection device 100 is installed on external equipment, the first insulation division 10
Increase the cooperation area of overvoltage protection device 100 and external equipment cooperation, so that the fixation of overvoltage protection device 100 is more firm, and
It is electrically connected more stable.
In one embodiment, the end face of second electrode 20 is concordant with the outer end face of the first insulation division 30.This set-up mode
On the one hand it is reliable and stable to can guarantee that second electrode 20 is electrically connected with external equipment, on the other hand also increases overvoltage protection device 100
With the cooperation area of external equipment cooperation, the fixation of overvoltage protection device 100 is more firm, and is electrically connected more stable.
In one embodiment, it is tightly connected between first electrode 10 and second electrode 20 and the first insulation division 30.Tradition
Overvoltage protection device is generally positioned in babinet, and babinet is non-watertight structure, between existing between screw and insulation division and electrode
Gap, once water inlet, protector are easy to make moist and lead to protector short-circuit failure, because of 100 structure of overvoltage protection device of the present invention
Simple and compact, the structures such as no screw, therefore the present invention makes to seal between first electrode 10 and second electrode 20 and the first insulation division 30
Connection can be more convenient, and sealing effect is good.
In one embodiment, overvoltage protection device 100 further includes the second insulation division, and the second insulation division is circumferentially coated on
First electrode 10.The second insulation division is arranged to be conducive to that first electrode 10 is protected to damage from outside, secondly, can also avoid artificial
It touches and gets an electric shock.
Overvoltage protection device 100 provided by the invention, has the following advantages compared with prior art：
(1), by the way that in first electrode 10 through-hole 11 will be opened up, the first insulation division 30 be set to the both ends of first electrode 20 and
Through-hole 11 is covered, second electrode 20 is set to through-hole 11 and one end is pierced by from the first insulation division 30, and zinc oxide valve body is set to the
It between one electrode 10 and second electrode, can integrally be connected with external equipment, fixed and electrical connection is installed to realize simultaneously,
It is easy for installation and be hardly damaged；
(2) it is round hole by the way that through-hole 11 is arranged, and second electrode 20 is cylindrical, and prolongs along 11 central axes direction of through-hole
It stretches, the distance between first electrode 10 and second electrode 20 can be made uniform, so that overvoltage protection device 100 realizes stable protection
Characteristic；
(3), it is pierced by from corresponding first insulation division 30 by the way that the opposite both ends of second electrode 20 are arranged, first can be made
Electrode 10 and second electrode 20 and external equipment fitness are high, and are electrically connected more reliable and more stable；(4), absolutely by setting first
Edge 30 is connect with the inner wall of through-hole 11, the end face of first electrode 10 can be made to be revealed in outer, is first electrode 10 and second electrode
20 are revealed in the same side, this electrical connection and the fixed installation simpler convenience of mode；
(5), the outer end face by the first insulation division 10 of setting and the end face of first electrode 10 and the end face of second electrode 20
Concordantly, the cooperation area of overvoltage protection device 100 and external equipment cooperation can be increased, the fixation of overvoltage protection device 100 is more firm,
And electrical connection is more stable.
Each technical characteristic of embodiment described above can be combined arbitrarily, to keep description succinct, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, it is all considered to be the range of this specification record.
Several embodiments of the invention above described embodiment only expresses, the description thereof is more specific and detailed, but simultaneously
It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that coming for those of ordinary skill in the art
It says, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the protection of the present invention
Range.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (10)
1. a kind of overvoltage protection device, which is characterized in that including：
First electrode has the through-hole through the first electrode opposite end；
First insulation division is set to the opposite both ends of the first electrode, and covers the through-hole；
Second electrode is set in the through-hole, and at least one end of the second electrode is fixedly connected on first insulation division,
At least one end of the second electrode is pierced by from first insulation division, is also had between the second electrode and the through-hole wall
There is gap；
Zinc oxide valve body is set in the gap between the second electrode and the through-hole wall.
2. overvoltage protection device according to claim 1, which is characterized in that the through-hole of the first electrode is circle
Hole, the second electrode are in the form of a column, and the second electrode extends along the central axes of the through-hole.
3. overvoltage protection device according to claim 2, which is characterized in that the radial cross-sectional shape of the first electrode is in
It is circular.
4. overvoltage protection device according to claim 1, which is characterized in that the second electrode have the first connecting pin and
The second connection end opposite with first connecting pin, first connecting pin are pierced by from first insulation division, and fixed
It is connected to first insulation division, the second connection end is fixedly connected with another first insulation division.
5. overvoltage protection device according to claim 4, which is characterized in that the second connection end insulate from described first
Portion is pierced by.
6. overvoltage protection device according to claim 1, which is characterized in that first insulation division is set to described first
In the through-hole of electrode, and it is connect with the inner wall of the through-hole.
7. overvoltage protection device according to claim 6, which is characterized in that the outer end face of first insulation division with it is described
The end face of first electrode is concordant.
8. overvoltage protection device according to claim 6, which is characterized in that the end face of the second electrode and described first
The outer end face of insulation division is concordant.
9. overvoltage protection device according to claim 1, which is characterized in that the first electrode and the second electrode with
It is tightly connected between first insulation division.
10. overvoltage protection device according to claim 1, which is characterized in that the overvoltage protection device further includes second
Insulation division, second insulation division are circumferentially coated on the first electrode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810508565.9A CN108597702A (en) | 2018-05-24 | 2018-05-24 | Overvoltage protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810508565.9A CN108597702A (en) | 2018-05-24 | 2018-05-24 | Overvoltage protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108597702A true CN108597702A (en) | 2018-09-28 |
Family
ID=63629062
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810508565.9A Pending CN108597702A (en) | 2018-05-24 | 2018-05-24 | Overvoltage protection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108597702A (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4616155A (en) * | 1983-07-18 | 1986-10-07 | Compagnie Industrielle De Tubes Et Lampes Electriques Citel | Overvoltage discharger for coaxial cables and method of making same |
| JPH05251217A (en) * | 1992-03-09 | 1993-09-28 | Matsushita Electric Ind Co Ltd | Voltage dependent non-linear resistor ceramic element |
| JPH0714704A (en) * | 1993-01-20 | 1995-01-17 | Murata Mfg Co Ltd | Through-type varistor |
| CN1983470A (en) * | 2005-12-15 | 2007-06-20 | 雷伊卡普公司 | Overvoltage protection devices including wafer of pressure sensirive varistor material |
| CN201336195Y (en) * | 2008-12-23 | 2009-10-28 | 武汉雷泰新能源有限公司 | High-voltage power cable sheath protector |
| CN202977039U (en) * | 2012-12-17 | 2013-06-05 | 安徽一天电气技术有限公司 | Zinc oxide valve group overvoltage protector |
| JP2013247160A (en) * | 2012-05-23 | 2013-12-09 | Toshiba Corp | Arrestor |
| WO2014134885A1 (en) * | 2013-03-08 | 2014-09-12 | 隆科电子(惠阳)有限公司 | Tubular voltage dependent resistor |
| US20160055945A1 (en) * | 2014-08-19 | 2016-02-25 | Longke Electronics (Huiyang) Co., Ltd. | Barrel-shaped fireproof and explosion-proof surge protection device with over-temperature protection function |
| JP2017174596A (en) * | 2016-03-23 | 2017-09-28 | 三菱マテリアル株式会社 | surge absorber |
| CN208208453U (en) * | 2018-05-24 | 2018-12-07 | 广州供电局有限公司 | over-voltage protector |
-
2018
- 2018-05-24 CN CN201810508565.9A patent/CN108597702A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4616155A (en) * | 1983-07-18 | 1986-10-07 | Compagnie Industrielle De Tubes Et Lampes Electriques Citel | Overvoltage discharger for coaxial cables and method of making same |
| JPH05251217A (en) * | 1992-03-09 | 1993-09-28 | Matsushita Electric Ind Co Ltd | Voltage dependent non-linear resistor ceramic element |
| JPH0714704A (en) * | 1993-01-20 | 1995-01-17 | Murata Mfg Co Ltd | Through-type varistor |
| CN1983470A (en) * | 2005-12-15 | 2007-06-20 | 雷伊卡普公司 | Overvoltage protection devices including wafer of pressure sensirive varistor material |
| CN201336195Y (en) * | 2008-12-23 | 2009-10-28 | 武汉雷泰新能源有限公司 | High-voltage power cable sheath protector |
| JP2013247160A (en) * | 2012-05-23 | 2013-12-09 | Toshiba Corp | Arrestor |
| CN202977039U (en) * | 2012-12-17 | 2013-06-05 | 安徽一天电气技术有限公司 | Zinc oxide valve group overvoltage protector |
| WO2014134885A1 (en) * | 2013-03-08 | 2014-09-12 | 隆科电子(惠阳)有限公司 | Tubular voltage dependent resistor |
| US20160055945A1 (en) * | 2014-08-19 | 2016-02-25 | Longke Electronics (Huiyang) Co., Ltd. | Barrel-shaped fireproof and explosion-proof surge protection device with over-temperature protection function |
| JP2017174596A (en) * | 2016-03-23 | 2017-09-28 | 三菱マテリアル株式会社 | surge absorber |
| CN208208453U (en) * | 2018-05-24 | 2018-12-07 | 广州供电局有限公司 | over-voltage protector |
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| TA01 | Transfer of patent application right |
Effective date of registration: 20200917 Address after: 510620 Tianhe District, Guangzhou, Tianhe South Road, No. two, No. 2, No. Applicant after: Guangzhou Power Supply Bureau of Guangdong Power Grid Co.,Ltd. Address before: 510620 Tianhe District, Guangzhou, Tianhe South Road, No. two, No. 2, No. Applicant before: GUANGZHOU POWER SUPPLY Co.,Ltd. |
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