CN114242358A - Separable lightning arrester and manufacturing method thereof - Google Patents
Separable lightning arrester and manufacturing method thereof Download PDFInfo
- Publication number
- CN114242358A CN114242358A CN202111487760.6A CN202111487760A CN114242358A CN 114242358 A CN114242358 A CN 114242358A CN 202111487760 A CN202111487760 A CN 202111487760A CN 114242358 A CN114242358 A CN 114242358A
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- metal
- voltage end
- separable
- lightning arrester
- voltage
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 12
- 238000000034 method Methods 0.000 claims abstract description 19
- 238000003825 pressing Methods 0.000 claims abstract description 12
- 229910052751 metal Inorganic materials 0.000 claims description 105
- 239000002184 metal Substances 0.000 claims description 105
- 238000005219 brazing Methods 0.000 claims description 9
- 229920002379 silicone rubber Polymers 0.000 claims description 8
- 239000004945 silicone rubber Substances 0.000 claims description 5
- 229910052782 aluminium Inorganic materials 0.000 claims description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 4
- 238000000465 moulding Methods 0.000 claims description 2
- 238000007789 sealing Methods 0.000 claims description 2
- 238000003466 welding Methods 0.000 claims description 2
- 239000003292 glue Substances 0.000 abstract description 6
- 238000001746 injection moulding Methods 0.000 abstract 1
- 239000000463 material Substances 0.000 description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 239000000741 silica gel Substances 0.000 description 4
- 229910002027 silica gel Inorganic materials 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 239000011810 insulating material Substances 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000007723 die pressing method Methods 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 239000000499 gel Substances 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 238000001465 metallisation Methods 0.000 description 1
- 238000010068 moulding (rubber) Methods 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 238000004073 vulcanization Methods 0.000 description 1
Images
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
- H01C7/12—Overvoltage protection resistors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C17/00—Apparatus or processes specially adapted for manufacturing resistors
Abstract
The invention discloses a separable lightning arrester and a manufacturing method thereof, wherein the separable lightning arrester comprises: the resistance chip core body is an equal-diameter piezoelectric resistance chip column which is integrally formed by adopting an equal-diameter pressing forming process; and the insulating layer is hermetically coated on the surface of the resistor chip core. According to the separable lightning arrester, the resistor disc core body is integrally formed by adopting the equal-diameter pressing forming process, so that the phenomena of poor electrical contact and partial discharge caused by the fact that insulating glue enters the resistor disc layers when an insulating outer sleeve is formed on the surface of the resistor disc core body in a traditional multi-resistor disc superposed core body structure in an injection molding mode can be avoided.
Description
Technical Field
The invention relates to the technical field of lightning arresters, in particular to a separable lightning arrester and a manufacturing method thereof.
Background
The separable lightning arrester has the advantages of compact structure, small installation occupied space and the like, and is widely applied.
At present, a resistance chip core body of a separable lightning arrester is formed by connecting and fastening a plurality of resistance chips and a metal cushion block in series by adopting an insulating pull rod type structure, and because small air gaps exist among the resistance chips and the metal cushion block, silica gel can be immersed into the small air gaps when an insulating layer is formed by injecting the silica gel at high pressure, and the local discharge amount is increased during operation, so that the lightning arrester is damaged; if adopt the conductive adhesive technique of gluing between resistance card and metal pad, hardly guarantee that conductive adhesive scribbles whole contact surface, conductive adhesive scribbles not enough and can cause partial discharge, scribbles too much and can cause outside flashover.
Therefore, how to avoid the silica gel from being immersed into the resistor core is a technical problem to be solved urgently by those skilled in the art.
Disclosure of Invention
In view of the above, a first object of the present invention is to provide a separable lightning arrester, which can prevent the silicon gel from immersing into the core of the resistor.
A second object of the present invention is to provide a method of manufacturing a separable lightning arrester.
In order to achieve the first object, the present invention provides the following solutions:
a separable lightning arrester comprising:
the resistor chip core body is an equal-diameter piezoelectric resistor chip column integrally formed by adopting an equal-diameter pressing forming process;
and the insulating layer is hermetically coated on the surface of the resistor chip core body.
In a specific embodiment, the separable lightning arrester further comprises a high-voltage end metal conducting rod and a low-voltage end metal base;
the bottom end of the high-voltage end metal conducting rod and the top end of the low-voltage end metal seat are respectively welded with the high-voltage end and the low-voltage end of the resistor chip core body;
the insulating layer is hermetically coated on the metal conducting rod and is hermetically coated on the joint of the low-voltage end metal seat and the resistor chip core body.
In another specific embodiment, the separable electrical arrester further comprises a high voltage end contact;
the high-voltage end contact is arranged at the top end of the high-voltage end metal conducting rod and is in conductive connection with the high-voltage end metal conducting rod;
the high-voltage end contact is used for being connected with an inner cone metal socket of the high-voltage gas-filled cabinet in an inserting mode.
In another specific embodiment, the separable electrical arrester further comprises a metal housing;
the metal shell is coated outside the insulating layer and is in conductive connection with the low-voltage end metal seat;
the metal shell is grounded.
In another specific embodiment, the end of the metal shell close to the high-pressure end contact is provided with a connecting flange for connecting with a flange of the high-pressure gas-filled tank.
In another specific embodiment, the metal housing is an aluminum housing;
the high-voltage end metal conducting rod and the low-voltage end metal seat are respectively welded with two ends of the resistor disc core body through brazing.
In another specific embodiment, the separable electrical arrester further comprises a pressure relief device;
the pressure release device blocks the bottom opening of the metal shell and can open the bottom opening of the metal shell to release pressure when the separable lightning arrester is short-circuited.
In another specific embodiment, the separable electrical arrester further comprises a bottom end pressure spring;
the bottom pressure spring is arranged in the metal shell, and two ends of the bottom pressure spring are respectively abutted to the low-pressure end metal seat and the pressure release device.
The various embodiments according to the invention can be combined as desired, and the embodiments obtained after these combinations are also within the scope of the invention and are part of the specific embodiments of the invention.
According to the separable lightning arrester, the resistance card core body is integrally formed by adopting the equal-diameter pressing forming process, so that the insulating material cannot enter the resistance card core body when the insulating material is formed on the surface of the resistance card core body.
In order to achieve the second object, the present invention provides the following solutions:
a method of manufacturing a separable lightning arrester, comprising:
step S1: adopting an equal-diameter pressing forming process to manufacture an integrally formed resistor disc core body;
step S2: welding the bottom end of the high-voltage end metal conducting rod and the top end of the low-voltage end metal seat with the high-voltage end and the low-voltage end of the resistor chip core body respectively into a whole by adopting a brazing process;
step S3: molding the whole body with silicone rubber, and forming an insulating layer on the surface of the whole body;
step S4: the whole body coated with the insulating layer is arranged in a metal shell;
step S5: and fixing a high-voltage end contact to the top end of the high-voltage end metal conducting rod.
In another specific embodiment, the step S5 is followed by the step S6: and sealing the bottom end opening of the metal shell by using a pressure relief device.
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 novelty work.
Fig. 1 is a schematic structural view of a separable lightning arrester according to the present invention.
Wherein, in fig. 1:
the detachable lightning arrester comprises a separable lightning arrester 1000, a resistor disc core 100, an insulating layer 200, a high-voltage end metal conducting rod 300, a low-voltage end metal seat 400, a high-voltage end contact 500, a metal shell 600, a connecting flange 601 and a pressure release device 700.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to fig. 1 in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "top", "bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the position or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
As shown in fig. 1, a first aspect of the present invention provides a separable lightning arrester 1000, which can effectively avoid the problem of silica gel immersion between resistance cards and between a resistance card and a metal pad, and greatly improve the product quality.
Specifically, the separable lightning arrester 1000 includes a resistive sheet core 100 and an insulating layer 200.
The resistance chip core body 100 is an equal-diameter piezoelectric resistance chip column integrally formed by adopting an equal-diameter pressing forming process, only one rod-shaped resistance chip core body 100 is arranged in each separable lightning arrester 1000, and the length of the resistance chip core body 100 is specifically determined according to the parameters of the corresponding separable lightning arrester 1000.
The insulating layer 200 is hermetically coated on the surface of the resistor chip core 100, and specifically, the insulating layer 200 is made of a silicon rubber material and is formed by die pressing, so that the insulating layer has an insulating and protecting performance.
According to the separable lightning arrester 1000 provided by the invention, the resistance card core body 100 is integrally formed by adopting an equal-diameter pressing forming process, so that an insulating material cannot enter the resistance card core body 100 when being formed on the surface of the resistance card core body 100.
In some embodiments, the separable electrical arrester 1000 further includes a high-voltage end metal conducting rod 300 and a low-voltage end metal holder 400.
The bottom end of the high-voltage end metal conducting rod 300 and the top end of the low-voltage end metal seat 400 are respectively welded with the high-voltage end and the low-voltage end of the resistance chip core 100, and specifically, brazed.
Active elements are added into the brazing filler metal, a reaction layer is formed on the surface of the resistor disc core body 100 through chemical reaction, and the surface of the resistor disc core body 100 is subjected to pre-metallization, so that the wettability of the brazing filler metal on the surface of the resistor disc core body 100 is improved. The soldered joint of the resistor chip 100 and the high-voltage end metal conducting rod 300 and the low-voltage end metal seat 400 has high mechanical strength, and the problem of glue entering between the resistor chip 100 and the electrodes of the high-voltage end metal conducting rod 300 and the low-voltage end metal seat 400 through small air gaps in the silicone rubber molding process is effectively solved.
The insulating layer 200 is hermetically wrapped on the metal conducting rod, and hermetically wrapped on the joint of the low-voltage end metal seat 400 and the resistance chip core 100.
In some embodiments, the separable lightning arrester 1000 further comprises a high-voltage terminal contact 500, the high-voltage terminal contact 500 is disposed on the top end of the high-voltage terminal metal conducting rod 300 and is electrically connected to the high-voltage terminal metal conducting rod 300, and the high-voltage terminal contact 500 is used for plugging with an inner cone metal socket of the high-voltage gas-filled cabinet.
Specifically, the high-voltage terminal contact 500 is a conductive watchband type contact, so that after the silicon rubber insulating plug is inserted into the inner cone of the high-voltage gas-filled cabinet, the high-voltage terminal contact 500 is in good conductive contact with the metal socket at the top of the inner cone.
It should be noted that the high-voltage-side contact 500 is a watchband-type contact, which is only a preferred embodiment of the present invention, and in practical applications, the high-voltage-side contact 500 may be provided as another type of contact.
When the separable lightning arrester 1000 provided by the invention is used, the high-voltage end contact 500 is connected with the high-voltage side neutral point of the voltage transformer, so that the voltage transformer is prevented from being damaged.
In some embodiments, the separable lightning arrester 1000 further includes a metal shell 600, the metal shell 600 covers the insulating layer 200, the metal shell 600 is electrically connected to the low-voltage end metal base 400, and the metal shell 600 is grounded, so that the safety of an operator is ensured.
Further, the invention discloses that the metal casing 600 is an aluminum casing, and it should be noted that the material of the casing is not limited, and the casing may be made of other metal materials.
Furthermore, the invention discloses that the end of the metal shell 600 close to the high-voltage terminal contact 500 is provided with a connecting flange 601 for fastening and butting with a flange of a high-voltage gas-filled tank, so as to ensure the electrical connection between the plugged separable lightning arrester 1000 and a high-voltage system.
In some embodiments, the separable lightning arrester 1000 further includes a pressure relief device 700, and the pressure relief device 700 blocks the bottom opening of the metal shell 600 and is capable of opening the bottom opening of the metal shell 600 to release pressure when the separable lightning arrester 1000 is short-circuited.
Specifically, the pressure relief device 700 is a device that the high-pressure gas and the arc can rapidly break through the bottom of the separable lightning arrester 1000 when a fault occurs inside the arrester, so that the pressure inside the arrester is relieved without causing damage to the peripheral equipment.
The pressure relief device 700 is made of a plate material sensitive to pressure, which is mounted on the bottom of the metal casing 600.
In some embodiments, the separable lightning arrester 1000 further includes a bottom end pressure spring, the bottom end pressure spring is disposed in the metal shell 600, and both ends of the bottom end pressure spring are respectively abutted against the low-voltage end metal base 400 and the pressure release device 700, and the disposition of the bottom end pressure spring provides buffering for the low-voltage end metal base 400, the low-voltage end metal base 400 and the resistor disc core 100 as a whole.
The separable lightning arrester 1000 provided by the invention has the following advantages:
1) the resistor disc core body 100 adopts an equal-diameter pressing and forming manufacturing process, so that the problem of glue feeding between the traditional vulcanized core body resistor discs is effectively solved;
2) the resistor chip core 100, the high-voltage end metal conducting rod and the low-voltage end metal seat 400 are welded and fixed by adopting a brazing process, so that the problem that small air gaps between electrodes of the resistor chip core 100, the high-voltage end metal conducting rod and the low-voltage end metal seat 400 enter glue in the silicone rubber forming process is effectively solved;
3) the metal casing 600 is made of a metal material and is directly grounded, so that the safety of an operator is ensured;
4) the pressure release device 700 is designed at the bottom of the lightning arrester, so that when a short-circuit fault occurs in the lightning arrester, the internal pressure can be reliably released;
5) compact structure, small volume and convenient installation.
A second aspect of the present invention provides a method of manufacturing a separable lightning arrester 1000, including:
step S1: the resistance card core body 100 is manufactured by adopting an equal-diameter pressing forming process.
The resistor chip 100 is manufactured by equal-diameter pressing, and the problem of glue feeding between the traditional chip resistor chips after vulcanization is effectively solved.
Step S2: the bottom end of the high-voltage end metal conducting rod 300 and the top end of the low-voltage end metal seat 400 are respectively welded with the high-voltage end and the low-voltage end of the resistance chip core 100 into a whole by adopting a brazing process.
The resistor chip core 100, the high-voltage end metal conducting rod and the low-voltage end metal seat 400 are welded and fixed by adopting a brazing process, so that the problem that a small air gap between electrodes of the resistor chip core 100, the high-voltage end metal conducting rod and the low-voltage end metal seat 400 enters glue in the silicone rubber forming process is effectively solved.
Step S3: the whole is molded with silicon rubber, and an insulating layer 200 is formed on the surface of the whole.
The insulating layer 200 serves as electrical insulation of the resistive chip core 100 from the metal case 600.
Step S4: the entirety of the insulating cover layer 200 is enclosed in the metal case 600.
Specifically, the metal case 600 is made of an aluminum material.
Step S5: the high-voltage end contact 500 is fixed to the top end of the high-voltage end metal conductive rod 300.
Specifically, the high-voltage side contact 500 is a watchband type contact.
In some embodiments, step S5 is further followed by step S6: the bottom end opening of the metal case 600 is closed with a pressure relief device 700.
The pressure release device 700 is designed at the bottom of the lightning arrester, and when a short-circuit fault occurs inside the lightning arrester, the internal pressure can be reliably released.
It should be noted that the words used herein to indicate orientation, such as top and bottom, are set forth in the orientation of fig. 1 for convenience of description only and have no other specific meaning.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise forms disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.
Claims (10)
1. A separable lightning arrester, comprising:
the resistor chip core body is an equal-diameter piezoelectric resistor chip column integrally formed by adopting an equal-diameter pressing forming process;
and the insulating layer is hermetically coated on the surface of the resistor chip core body.
2. The separable lightning arrester according to claim 1, further comprising a high-voltage end metal conducting rod and a low-voltage end metal base;
the bottom end of the high-voltage end metal conducting rod and the top end of the low-voltage end metal seat are respectively welded with the high-voltage end and the low-voltage end of the resistor chip core body;
the insulating layer is hermetically coated on the metal conducting rod and is hermetically coated on the joint of the low-voltage end metal seat and the resistor chip core body.
3. The separable lightning arrester of claim 2, further comprising a high-voltage terminal contact;
the high-voltage end contact is arranged at the top end of the high-voltage end metal conducting rod and is in conductive connection with the high-voltage end metal conducting rod;
the high-voltage end contact is used for being connected with an inner cone metal socket of the high-voltage gas-filled cabinet in an inserting mode.
4. The separable lightning arrester of claim 2, further comprising a metal housing;
the metal shell is coated outside the insulating layer and is in conductive connection with the low-voltage end metal seat;
the metal shell is grounded.
5. The disconnectable surge arrester according to claim 4, wherein the end of said metal housing adjacent to said high voltage terminal contact is provided with a connecting flange for connection with a flange of said high voltage gas-filled tank.
6. The separable lightning arrester of claim 5, wherein the metal outer shell is an aluminum outer shell;
the high-voltage end metal conducting rod and the low-voltage end metal seat are respectively welded with two ends of the resistor disc core body through brazing.
7. The separable lightning arrester according to any one of claims 4 to 6, further comprising a pressure relief device;
the pressure release device blocks the bottom opening of the metal shell and can open the bottom opening of the metal shell to release pressure when the separable lightning arrester is short-circuited.
8. The separable lightning arrester of claim 5, further comprising a bottom end pressure spring;
the bottom pressure spring is arranged in the metal shell, and two ends of the bottom pressure spring are respectively abutted to the low-pressure end metal seat and the pressure release device.
9. A method of manufacturing a separable lightning arrester, comprising:
step S1: adopting an equal-diameter pressing forming process to manufacture an integrally formed resistor disc core body;
step S2: welding the bottom end of the high-voltage end metal conducting rod and the top end of the low-voltage end metal seat with the high-voltage end and the low-voltage end of the resistor chip core body respectively into a whole by adopting a brazing process;
step S3: molding the whole body with silicone rubber, and forming an insulating layer on the surface of the whole body;
step S4: the whole body coated with the insulating layer is arranged in a metal shell;
step S5: and fixing a high-voltage end contact to the top end of the high-voltage end metal conducting rod.
10. The manufacturing method according to claim 9, further comprising a step S6 after the step S5: and sealing the bottom end opening of the metal shell by using a pressure relief device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111487760.6A CN114242358A (en) | 2021-12-07 | 2021-12-07 | Separable lightning arrester and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111487760.6A CN114242358A (en) | 2021-12-07 | 2021-12-07 | Separable lightning arrester and manufacturing method thereof |
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| Publication Number | Publication Date |
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| CN114242358A true CN114242358A (en) | 2022-03-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111487760.6A Pending CN114242358A (en) | 2021-12-07 | 2021-12-07 | Separable lightning arrester and manufacturing method thereof |
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|---|---|---|---|---|
| CN101001486A (en) * | 2006-12-25 | 2007-07-18 | 杨世养 | Preparation method of ceramic heating core for sensor |
| CN202134300U (en) * | 2011-02-22 | 2012-02-01 | 中国西电电气股份有限公司 | Split type lightning arrester |
| CN103559962A (en) * | 2013-11-14 | 2014-02-05 | 都匀供电局 | Method and device for using arrester as supporting insulator |
| CN203631218U (en) * | 2013-12-13 | 2014-06-04 | 中国西电电气股份有限公司 | Current converter lightning arrestor |
| CN209625949U (en) * | 2018-12-11 | 2019-11-12 | 金冠电气股份有限公司 | A kind of 35kV exchange plug-in gapless metal-oxide lighting arrester |
| CN113393987A (en) * | 2021-06-03 | 2021-09-14 | 中国电力科学研究院有限公司 | Arrester core body with insulating layer, arrester body and multi-column parallel arrester |
-
2021
- 2021-12-07 CN CN202111487760.6A patent/CN114242358A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101001486A (en) * | 2006-12-25 | 2007-07-18 | 杨世养 | Preparation method of ceramic heating core for sensor |
| CN202134300U (en) * | 2011-02-22 | 2012-02-01 | 中国西电电气股份有限公司 | Split type lightning arrester |
| CN103559962A (en) * | 2013-11-14 | 2014-02-05 | 都匀供电局 | Method and device for using arrester as supporting insulator |
| CN203631218U (en) * | 2013-12-13 | 2014-06-04 | 中国西电电气股份有限公司 | Current converter lightning arrestor |
| CN209625949U (en) * | 2018-12-11 | 2019-11-12 | 金冠电气股份有限公司 | A kind of 35kV exchange plug-in gapless metal-oxide lighting arrester |
| CN113393987A (en) * | 2021-06-03 | 2021-09-14 | 中国电力科学研究院有限公司 | Arrester core body with insulating layer, arrester body and multi-column parallel arrester |
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