CN109638650A - One kind being based on multi-chamber line thunder protection device - Google Patents
One kind being based on multi-chamber line thunder protection device Download PDFInfo
- Publication number
- CN109638650A CN109638650A CN201811435389.7A CN201811435389A CN109638650A CN 109638650 A CN109638650 A CN 109638650A CN 201811435389 A CN201811435389 A CN 201811435389A CN 109638650 A CN109638650 A CN 109638650A
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- Prior art keywords
- chamber
- arc extinguishing
- electrode
- ontology
- protection device
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
- H01T4/00—Overvoltage arresters using spark gaps
- H01T4/16—Overvoltage arresters using spark gaps having a plurality of gaps arranged in series
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
- H01T1/00—Details of spark gaps
- H01T1/02—Means for extinguishing arc
- H01T1/08—Means for extinguishing arc using flow of arc-extinguishing fluid
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
- H01T4/00—Overvoltage arresters using spark gaps
- H01T4/02—Details
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
- H01T4/00—Overvoltage arresters using spark gaps
- H01T4/04—Housings
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
- H01T4/00—Overvoltage arresters using spark gaps
- H01T4/08—Overvoltage arresters using spark gaps structurally associated with protected apparatus
Abstract
The invention discloses one kind to be based on multi-chamber line thunder protection device, the multi-chamber arc extinguishing lightning protection ontology being connect using installation tool with by the insulator bottom of protection circuit, penetrating cable clamp electrode one end is connected to by protection circuit, series connection main gap is equipped between penetrating cable clamp electrode other end multi-chamber arc extinguishing lightning protection ontology, the overvoltage that lightning stroke generates generates a big electric arc between conducting wire and route, and by two it is adjacent between small arc chamber be discharged, the high pressure gas generated during electric arc release blows to small electric arc in air, to which electric arc be eliminated, the maximum quenching time is less than 10MS, operation voltage is high, thunder and lightning releasability is strong, simultaneously when thunder and lightning is directly hit on route, it will not burst since lightning current is excessive.Present apparatus structure is simple, be not required to ground connection, has self-cleaning performance, thus installation simply is not required to safeguard, the construction and installation expense and long-term O&M cost of power supply company can be greatly reduced.
Description
Technical field
The invention belongs to high-tension line lightning arresters, and in particular to one kind is based on multi-chamber line thunder protection device.
Background technique
Power distribution network is the tie for connecting power supply enterprise and user, is played the role of in the entire power system vital.
In order to improve the security reliability of distribution line, China is during Urbanization Construction gradually by 10kV distribution line by passing
The overhead bare conductor of system is transformed into suspended insulated guide wire.Thunder and lightning is to threaten distribution line, especially suspended insulated guide wire distribution wire
The major reason of road security reliability.By be struck by lightning initiation flashover when, electric arc discharges big calorimetric in a fixed point continuous discharge
Amount easily causes line insulation to burn out or even the case where lightning-caused breaking.
In thunder and lightning over the ground discharge process, the change dramatically of discharge channel surrounding space electromagnetic field can be maked somebody a mere figurehead nearby
Induced overvoltage is generated on line.Thunder and lightning possibly even directly hits distribution overhead line, generates high lightning surge.Work as thunder
When electric overvoltage is more than certain numerical value, the flashover that will lead to distribution line even breaks, and causes the destruction of supply network, this will
Directly affect the reliability of distribution system power supply.Therefore, it is necessary to the lightning surges of centering press-fitting network system, and protection to be taken to arrange
It applies.Currently, the lightning surge of medium voltage distribution network system takes safeguard procedures, there are two main classes: blocking type safeguard procedures can be divided into
The thunder and lightning for improving distribution line is resistant to insulation characterisitic, and direct lightning strike is intercepted using aerial earth wire, and the induction reduced on conducting wire is excessively electric
Pressure, and installation leakage conductor carry out clamper by the overvoltage at protection insulator both ends；Diverting type safeguard procedures basic principle is
Electric arc is dredged, does not allow electric arc calcination conducting wire.Including extending flashover path, being partially stripped insulated conductor, using portable protective gaps in parallel
(being commonly called as arcing horn) etc., common Zinc-Oxide Arrester, structure is complicated for Zinc-Oxide Arrester, needs grounding design and needs to determine
Phase detection replacement.Thus construction and installation are inconvenient, and maintenance work is more demanding, since what zinc oxide component aging was easy to appear takes shelter from the thunder
Device Problem of Failure, currently used distribution line lightning protection measures require to require to install in each circuit, Zinc-Oxide Arrester
Structure is complicated, needs grounding design and periodic detection is needed to replace.
Summary of the invention
The purpose of the present invention is to provide one kind to be based on multi-chamber line thunder protection device, with overcome the deficiencies in the prior art.
In order to achieve the above objectives, the present invention adopts the following technical scheme:
One kind being based on multi-chamber line thunder protection device, including the installation tool connecting with by the insulator bottom of protection circuit
With the multi-chamber arc extinguishing lightning protection ontology supported by installation tool, one end of multi-chamber arc extinguishing lightning protection ontology by installation tool with
The connection of insulator bottom, penetrating cable clamp electrode are connected to by protection circuit, penetrating cable clamp electrode and multi-chamber arc extinguishing lightning protection ontology
Between be equipped with series connection main gap；Multi-chamber arc extinguishing lightning protection ontology both ends are respectively equipped with end metal fitting, and multi-chamber arc extinguishing lightning protection sheet
Internal portion is equipped with multiple built-in electrodes, forms a gas chamber between each adjacent two built-in electrode, two of them are located at end
Built-in electrode distinguish end metal fitting connection adjacent thereto；Built-in electrode passes through in multi-chamber arc extinguishing lightning protection device body interior
Insulating layer encapsulation, wherein built-in electrode and gas chamber junction are exposed, and gas chamber is set to single-ended opening, single-ended opening
Multi-chamber arc extinguishing lightning protection body surface forms discharge channel.
Further, gas chamber is cylindrical or cuboid.
Further, installation tool is using metal linking clip tool or connecting rod.
Further, connect main gap distance be 50mm~60mm.
Further, penetrating cable clamp electrode one end is connect with the fitting of the multi-chamber arc extinguishing lightning protection ontology other end, puncture line
Folder electrode includes grip block and the fixed connecting plate that connect with the fitting of the multi-chamber arc extinguishing lightning protection ontology other end, grip block and
Fixed connecting plate is fixedly connected by bolt group, is equipped between grip block and fixed connecting plate for clamping by the recessed of protection circuit
Slot structure is fixed with bore spine type electrode in groove structure.
Further, it is fixed on by the insulator of protection circuit on the hack lever being made of cross bar and vertical frame bar.
Further, multi-chamber arc extinguishing lightning protection body interior is equipped with insulating bar in built-in base part), insulating bar both ends point
It is not connect with end metal fitting.
Further, gas chamber's quantity of multi-chamber arc extinguishing lightning protection body interior is no less than 5, and neighboring gas chamber
Distance is 0.5mm~5mm；Built-in electrode uses diameter for the ball shape of 4mm~12mm.
Further, gas chamber is cylindrical or cuboid, and there is single-ended opening to form discharge channel for gas chamber,
Single-ended opening is set to multi-chamber arc extinguishing lightning protection body surface.
Further, insulating layer uses high-temperature silicon disulfide rubber, liquid silastic, polyethylene, polyvinyl chloride or nylon material
Material is made；Insulating bar is glass fiber reinforced epoxy resin stick, glass fiber reinforcement unsaturated polyester stick or glass fiber reinforcement
Nylon rod.
Further, insulating bar both ends connect or are threadedly coupled using crimping with the end metal fitting respectively.
Compared with prior art, the invention has the following beneficial technical effects:
It is of the invention a kind of based on multi-chamber line thunder protection device, pass through the peace connecting with by the insulator bottom of protection circuit
Holding tool and the multi-chamber arc extinguishing lightning protection ontology supported by installation tool, one end of multi-chamber arc extinguishing lightning protection ontology passes through installation
Tool is connect with insulator bottom, and series connection main gap is equipped between penetrating cable clamp electrode and multi-chamber arc extinguishing lightning protection ontology；Multi-cavity
Room arc extinguishing lightning protection ontology both ends are respectively equipped with end metal fitting, and multi-chamber arc extinguishing lightning protection body interior is equipped with multiple built-in electrodes,
A gas chamber is formed between each adjacent two built-in electrode, the built-in electrode that two of them are located at end is distinguished adjacent thereto
End metal fitting connection；Built-in electrode is encapsulated in multi-chamber arc extinguishing lightning protection device body interior by insulating layer, wherein built-in electrode
Exposed with gas chamber junction, gas chamber has single-ended opening, and single-ended opening is set to multi-chamber arc extinguishing lightning protection body surface
Form discharge channel, the overvoltage for generation of being struck by lightning generates a big electric arc between conducting wire and route, and by two it is adjacent between
The discharge of small arc chamber, the high pressure gas that generates blows to small electric arc in air during electric arc release, thus by electric arc
It eliminates, the maximum quenching time is less than 10MS, and operation voltage is high, and thunder and lightning releasability is strong, and is not in due to zinc oxide member
Part aging and the arrester Problem of Failure occurred, while when thunder and lightning is directly hit on route, will not it is excessive due to lightning current and
It bursts, it is more preferable to the lightning protection effect of insulated circuit and insulator.Present apparatus structure is simple, is not required to ground connection, has certainly
Clean-up performance, thus installation simply be not required to safeguard, can be greatly reduced power supply company construction and installation expense and long-term O&M at
This.
Further, the external insulation absolutely as series connection multi-chamber arc extinguishing lightning protection device ontology of use, insulating layer use material
Material has excellent insulation performance, weather-resistant performance, resistance to electric arc calcination performance and resistance to pollution performance, can protect ontology
Internal element.
Further, using built-in multiple gas chamber, chamber is vulcanized by insulating materials by hot press moulding or injection
And shape, the chamber designed in this way can form good gas chamber's environment, be effectively protected internal microgap and interior
Electrode is set from the erosion and pollution of environment.
Detailed description of the invention
Fig. 1 is present system structural schematic diagram.
Fig. 2 is penetrating cable clamp electrode structure schematic diagram of the present invention.
Fig. 3 is insulating bar structural schematic diagram.
Fig. 4 is Fig. 3 top view.
Fig. 5 is the small arc chamber structural schematic diagram of the present invention.
Specific embodiment
The invention will be described in further detail with reference to the accompanying drawing:
As shown in Figures 1 to 5, a kind of to be based on multi-chamber line thunder protection device, including with by the insulator 2 of protection circuit 1
The installation tool 3 of bottom connection and the multi-chamber arc extinguishing lightning protection ontology 4 supported by installation tool 3, multi-chamber arc extinguishing lightning protection sheet
One end of body 4 is connect by installation tool 3 with 2 bottom of insulator, is equipped with penetrating cable clamp electrode by protection circuit isolation top
5,5 one end of penetrating cable clamp electrode is connected to by protection circuit 1,5 other end of penetrating cable clamp electrode and multi-chamber arc extinguishing lightning protection ontology 4
The other end is equipped with series connection main gap close to not contacting between penetrating cable clamp electrode 5 and multi-chamber arc extinguishing lightning protection ontology 4；Multi-chamber
4 both ends of arc extinguishing lightning protection ontology are respectively equipped with end metal fitting 8, i.e. metal electrode, and multi-chamber arc extinguishing lightning protection body interior is equipped with more
A built-in electrode 9 forms a gas chamber 11 between each adjacent two built-in electrode, and two of them are located at the built-in electrode of end
End metal fitting 8 adjacent thereto connects respectively；Built-in electrode 9 passes through insulating layer 10 in multi-chamber arc extinguishing lightning protection device body interior
Encapsulation, wherein built-in electrode 9 and gas chamber 11 junction are exposed, make to form multiple air chambers between each adjacent built-in electrode 9
Room is cascaded.
Installation tool 3 is had using metal linking clip or connecting rod, installation tool 3 and multi-chamber arc extinguishing lightning protection ontology one end
Fitting 8 connect；As shown in Fig. 2, 5 one end of penetrating cable clamp electrode is connect with the fitting 8 of the multi-chamber arc extinguishing lightning protection ontology other end,
Penetrating cable clamp electrode 5 includes grip block 14 and is fixedly connected with what the fitting 8 of the multi-chamber arc extinguishing lightning protection ontology other end was connect
Plate 13, grip block 14 are fixedly connected by bolt group 15 with fixed connecting plate 13, are set between grip block 14 and fixed connecting plate 13
Have for clamping by the groove structure of protection circuit 1, bore spine type electrode 16 is fixed in groove structure, penetrating cable clamp electrode 5 is equal
For conductive material；13 one end of fixed connecting plate and 8 gap of fitting of multi-chamber arc extinguishing lightning protection ontology one end are set in clamping process
It sets, then grip block 14 and fixed connecting plate 13 is fixed on by protection circuit 1 using bolt group 15, bore spine type electrode 16 is inserted
Enter by protection circuit 1, guarantees stable connection；
It is fixed on the hack lever being made of cross bar 7 and vertical frame bar 6 by the insulator 2 of protection circuit 1；
Inside multi-chamber arc extinguishing lightning protection ontology 4 below built-in electrode 9 be equipped with insulating bar 12,12 both ends of insulating bar respectively with
End metal fitting connection, provides mechanical strength for multi-chamber arc extinguishing lightning protection ontology.
Gas chamber's quantity inside multi-chamber arc extinguishing lightning protection ontology 4 is no less than 5, and gas chamber's distance is 0.5mm
~5mm；Built-in electrode uses diameter for the ball shape of 4mm~12mm.
Gas chamber 11 is cylindrical or cuboid, and there is single-ended opening to form discharge channel 17 for gas chamber, single-ended
Opening is set to multi-chamber arc extinguishing lightning protection body surface,.
Insulating layer 10 use hot press moulding or injection technique sulfidization molding, using high-temperature silicon disulfide rubber, liquid silastic,
Polyethylene, polyvinyl chloride or nylon material are made.
Insulating bar 12 is glass fiber reinforced epoxy resin stick, glass fiber reinforcement unsaturated polyester stick or glass fibre
Enhance nylon rod.
12 both ends of insulating bar connect or are threadedly coupled using crimping with the end metal fitting respectively.
The both ends fitting of multi-chamber arc extinguishing lightning protection ontology 4 uses cast steel, aluminium alloy or stainless steel material.
Series connection main gap and multiple gas chamber is respectively set in multi-chamber arc extinguishing lightning protection ontology 4, when being mounted on distribution wire
When on the road and with protected circuit insulator parallel running, the voltage of distribution system is applied to series connection main gap and multiple air chambers
On room, because the equivalent capacitance amount of main gap is much smaller than built-in gap, i.e. gas chamber, so system voltage acts predominantly on master
On gap, when the lightning surge that system is subjected to is more than certain numerical value, gap (including series connection main gap and gas chamber) is hit
It wears, power frequency continued flow will flow through gap (flowing successively through series connection main gap and gas chamber), and electric arc will be established between built-in electrode
Get up, electric arc is established initial stage, and length is shorter, and is burnt between built-in microgap, and resulting high temperature can make cavity bottom
Gas sharply expands, and air pressure increased dramatically；Due to chamber be single-ended hatch frame, hyperbar is horizontal blow effect under, cool electricity
Arc and electric arc are elongated to other than built-in microgap, and the impedance of arc road becomes larger, and power frequency continued flow is in half of frequency cycle by blow-out
Cutting.In addition, built-in microgap electrode nearby has " nearly cathode effect " when voltage zero-cross, series connection multi-chamber structure makes multiple
Nearly cathode effect superposition, improves the ratio between dielectric insulation intensity resume speed and rate of voltage rise, is more advantageous to inhibition electric arc
It restrikes.
It, can be according to the system voltage grade that device uses using main gap and multiple concatenated structures in built-in microgap
Size increases or decreases the distance of series connection main gap and increases or decreases the number of multiple gas chamber, so that whole device
Adapt to the voltage class used.The distance of series connection main gap is 50mm~60mm, and the number of built-in microgap is 40 or so
(single clearance distance 0.8mm~1.2mm).
The exhausted external insulation as series connection multi-chamber arc extinguishing lightning protection device ontology used, insulating layer use material (such as silicon
Rubber) there is excellent insulation performance, weather-resistant performance, resistance to electric arc calcination performance and resistance to pollution performance, it can protect this
The internal element of body.
Using built-in multiple gas chamber, chamber is vulcanized by hot press moulding or injection by insulating materials and is shaped, this
Sample design chamber can form good gas chamber's environment, be effectively protected internal microgap and built-in electrode from
The erosion and pollution of environment.
It can be in half of frequency cycle using series connection multi-chamber gas blast arc-quenching technology based on magnetohydrodynamics principle
(10ms) internal cutting off be struck by lightning caused by power frequency continued flow and extinguish electric arc, limiting circuitry insulator both ends overvoltage level, effectively
Protect middle voltage distribution networks route from Lightning disservice.
Claims (10)
1. one kind be based on multi-chamber line thunder protection device, which is characterized in that including with by insulator (2) bottom of protection circuit (1)
The installation tool (3) of portion's connection and the multi-chamber arc extinguishing lightning protection ontology (4) supported by installation tool (3), multi-chamber arc extinguishing are anti-
One end of thunder ontology (4) is connect by installation tool (3) with insulator (2) bottom, and penetrating cable clamp electrode (5), which is connected to, to be protected
Circuit (1) is equipped with series connection main gap between penetrating cable clamp electrode (5) and multi-chamber arc extinguishing lightning protection ontology (4)；Multi-chamber arc extinguishing is anti-
Thunder ontology (4) both ends are respectively equipped with end metal fitting (8), and multi-chamber arc extinguishing lightning protection body interior is equipped with multiple built-in electrodes (9),
Formed between each adjacent two built-in electrode a gas chamber (11), two of them be located at the built-in electrode of end respectively with its phase
Adjacent end metal fitting (8) connection；Built-in electrode (9) is sealed in multi-chamber arc extinguishing lightning protection device body interior by insulating layer (10)
Dress, wherein built-in electrode (9) and gas chamber (11) junction are exposed, and gas chamber (11) has single-ended opening, single-ended opening
Discharge channel (17) are formed set on multi-chamber arc extinguishing lightning protection ontology (4) surface.
2. a kind of multi-chamber line thunder protection device is based on according to claim 1, which is characterized in that gas chamber (11) is in
Cylindrical or cuboid, installation tool (3) is had using metal linking clip or connecting rod.
A kind of be based on multi-chamber line thunder protection device 3. according to claim 1, which is characterized in that main gap of connecting away from
From for 50mm~60mm.
4. according to claim 1 a kind of based on multi-chamber line thunder protection device, which is characterized in that penetrating cable clamp electrode
(5) one end is connect with the fitting (8) of the multi-chamber arc extinguishing lightning protection ontology other end, and penetrating cable clamp electrode (5) includes grip block (14)
And the fixed connecting plate (13) being connect with the fitting (8) of the multi-chamber arc extinguishing lightning protection ontology other end, grip block (14) and fixation
Connecting plate (13) is fixedly connected by bolt group (15), is equipped between grip block (14) and fixed connecting plate (13) for clamping quilt
The groove structure of circuit (1) is protected, is fixed with bore spine type electrode (16) in groove structure.
5. according to claim 1 a kind of based on multi-chamber line thunder protection device, which is characterized in that by protection circuit (1)
Insulator (2) be fixed on the hack lever being made of cross bar (7) and vertical frame bar (6).
6. according to claim 1 a kind of based on multi-chamber line thunder protection device, which is characterized in that multi-chamber arc extinguishing lightning protection
Ontology (4) is internal to be equipped with insulating bar (12) below built-in electrode (9), and insulating bar (12) both ends are connect with end metal fitting respectively.
7. according to claim 1 a kind of based on multi-chamber line thunder protection device, which is characterized in that multi-chamber arc extinguishing lightning protection
The internal gas chamber's quantity of ontology (4) is no less than 5, and neighboring gas chamber distance is 0.5mm~5mm；Built-in electrode is adopted
The ball shape for being 4mm~12mm with diameter.
8. a kind of multi-chamber line thunder protection device is based on according to claim 1, which is characterized in that gas chamber (11) is in
Cylindrical or cuboid, and there is single-ended opening to be formed discharge channel (17) for gas chamber, single-ended opening is set to multi-chamber arc extinguishing
Lightning protection body surface.
9. according to claim 1 a kind of based on multi-chamber line thunder protection device, which is characterized in that insulating layer (10) uses
High-temperature silicon disulfide rubber, liquid silastic, polyethylene, polyvinyl chloride or nylon material are made；Insulating bar (12) is glass fibre
Reinforced epoxy stick, glass fiber reinforcement unsaturated polyester stick or glass fibre reinforced nylon stick.
10. according to claim 1 a kind of based on multi-chamber line thunder protection device, which is characterized in that insulating bar (12) two
End connects or is threadedly coupled using crimping with the end metal fitting respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811435389.7A CN109638650A (en) | 2018-11-28 | 2018-11-28 | One kind being based on multi-chamber line thunder protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811435389.7A CN109638650A (en) | 2018-11-28 | 2018-11-28 | One kind being based on multi-chamber line thunder protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109638650A true CN109638650A (en) | 2019-04-16 |
Family
ID=66069479
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811435389.7A Pending CN109638650A (en) | 2018-11-28 | 2018-11-28 | One kind being based on multi-chamber line thunder protection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109638650A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111446626A (en) * | 2020-05-14 | 2020-07-24 | 国网湖北省电力有限公司十堰供电公司 | Electric arc-proof fitting |
| WO2020215650A1 (en) * | 2019-04-22 | 2020-10-29 | 中国电力科学研究院有限公司 | Lightning arrester having external series gap and lightning protection system |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203722173U (en) * | 2014-01-25 | 2014-07-16 | 广州供电局有限公司 | Integrated serial-connection gap-adjustable arc-blowing distribution line lightning protection device |
| CN207353645U (en) * | 2017-10-10 | 2018-05-11 | 总立机电工程（苏州）有限公司 | Split clamping type cable arrester |
| CN207530305U (en) * | 2017-10-18 | 2018-06-22 | 南阳金牛电气有限公司 | A kind of series connection multi-chamber arc extinguishing lightning protection device |
-
2018
- 2018-11-28 CN CN201811435389.7A patent/CN109638650A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203722173U (en) * | 2014-01-25 | 2014-07-16 | 广州供电局有限公司 | Integrated serial-connection gap-adjustable arc-blowing distribution line lightning protection device |
| CN207353645U (en) * | 2017-10-10 | 2018-05-11 | 总立机电工程（苏州）有限公司 | Split clamping type cable arrester |
| CN207530305U (en) * | 2017-10-18 | 2018-06-22 | 南阳金牛电气有限公司 | A kind of series connection multi-chamber arc extinguishing lightning protection device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020215650A1 (en) * | 2019-04-22 | 2020-10-29 | 中国电力科学研究院有限公司 | Lightning arrester having external series gap and lightning protection system |
| CN111446626A (en) * | 2020-05-14 | 2020-07-24 | 国网湖北省电力有限公司十堰供电公司 | Electric arc-proof fitting |
| CN111446626B (en) * | 2020-05-14 | 2024-01-30 | 国网湖北省电力有限公司十堰供电公司 | Electric arc-proof hardware fitting |
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Application publication date: 20190416 |