CN111490487A - Arc extinguishing switch cabinet - Google Patents
Arc extinguishing switch cabinet Download PDFInfo
- Publication number
- CN111490487A CN111490487A CN202010208005.9A CN202010208005A CN111490487A CN 111490487 A CN111490487 A CN 111490487A CN 202010208005 A CN202010208005 A CN 202010208005A CN 111490487 A CN111490487 A CN 111490487A
- Authority
- CN
- China
- Prior art keywords
- arc
- grounding
- room
- contact
- moving contact
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000004880 explosion Methods 0.000 claims abstract description 29
- 238000010891 electric arc Methods 0.000 claims abstract description 23
- 239000007787 solid Substances 0.000 claims abstract description 8
- 239000000945 filler Substances 0.000 claims abstract description 7
- 238000013022 venting Methods 0.000 claims description 15
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 8
- 230000003068 static effect Effects 0.000 claims description 8
- 239000011810 insulating material Substances 0.000 claims description 5
- 239000004254 Ammonium phosphate Substances 0.000 claims description 4
- 229910000148 ammonium phosphate Inorganic materials 0.000 claims description 4
- 235000019289 ammonium phosphates Nutrition 0.000 claims description 4
- MNNHAPBLZZVQHP-UHFFFAOYSA-N diammonium hydrogen phosphate Chemical compound [NH4+].[NH4+].OP([O-])([O-])=O MNNHAPBLZZVQHP-UHFFFAOYSA-N 0.000 claims description 4
- 239000003973 paint Substances 0.000 claims description 4
- -1 polytetrafluoroethylene Polymers 0.000 claims description 4
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 4
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 4
- 239000000843 powder Substances 0.000 claims description 4
- 239000010453 quartz Substances 0.000 claims description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 4
- 239000011780 sodium chloride Substances 0.000 claims description 4
- 239000000126 substance Substances 0.000 claims description 4
- WYXIGTJNYDDFFH-UHFFFAOYSA-Q triazanium;borate Chemical compound [NH4+].[NH4+].[NH4+].[O-]B([O-])[O-] WYXIGTJNYDDFFH-UHFFFAOYSA-Q 0.000 claims description 4
- 229920002943 EPDM rubber Polymers 0.000 claims description 3
- 239000003822 epoxy resin Substances 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 229920000647 polyepoxide Polymers 0.000 claims description 3
- 229920002379 silicone rubber Polymers 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 4
- 238000009413 insulation Methods 0.000 description 3
- 238000005422 blasting Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B13/00—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/56—Cooling; Ventilation
- H02B1/565—Cooling; Ventilation for cabinets
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B13/00—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle
- H02B13/02—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle with metal casing
- H02B13/025—Safety arrangements, e.g. in case of excessive pressure or fire due to electrical defect
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Gas-Insulated Switchgears (AREA)
Abstract
The invention provides an arc extinguishing switch cabinet which comprises an external arc discharge area (1), an instrument room (2), a breaker room (3), an insulating box room (4), a wire inlet room (5) and an arc striking channel for communicating the external arc discharge area (1) with a compartment, wherein an explosion releasing plate is arranged at an outlet of the arc striking channel, and an insulating box of the insulating box room (4) consists of a vacuum arc extinguishing chamber (42), an isolating switch, a grounding switch, a main bus, a branch bus and a solid insulating filler. This application is with vacuum interrupter, striking passageway, let out and explode the board combination for cubical switchboard fundamentally realizes arc extinguishing, striking, explosion-proof function, has improved the security performance of cubical switchboard.
Description
Technical Field
The invention relates to the technical field of switch cabinets, in particular to an arc extinguishing switch cabinet.
Background
The switch cabinet is very important electrical equipment in a power system, and the safe and reliable operation of the switch cabinet has very important significance for the safe and effective operation of the power system. The high-voltage switch cabinet mainly comprises a cable chamber, an instrument chamber, a breaker chamber and a bus chamber. In the high tension switchgear use, the phenomenon of arcing inevitably can take place in cable chamber, circuit breaker room and the generating line room, have characteristics such as high power, high temperature and strong destructive power because of electric arc, so when electric arc takes place, electric arc can make the internal gas of cabinet body heat up, also can make insulating material and metal material gasification decompose toxic and corrosive gas, these phenomena can cause in the compartment, the internal pressure of cabinet rises suddenly, and then arouses the cabinet body blasting, cause very big harm to the person and equipment, the safety in utilization is lower. And in a severe environment, the viscosity of oil in the switch cabinet is increased or solidified, which can affect the normal operation of the switch cabinet. Special designs are required to meet the environmental and safety requirements of the switchgear.
Disclosure of Invention
The invention provides an arc extinguishing switch cabinet, aiming at solving the problem of safety performance caused by electric arc in the switch cabinet in the prior art.
The utility model provides an arc extinguishing switch cabinet, its characterized in that, includes outside row arc district, instrument room, circuit breaker room, insulating box room, inlet wire room, still including the striking passageway a of intercommunication outside row arc district and instrument room, the striking passageway b of intercommunication outside row arc district and circuit breaker room, the striking passageway c of intercommunication outside row arc district and insulating box room, the striking passageway d of intercommunication outside row arc district and inlet wire room, the exit of striking passageway a, striking passageway b, striking passageway c, striking passageway d is equipped with respectively and lets out explosion plate a, let out explosion plate b, let out explosion plate c, let out explosion plate d, the insulating box of insulating box room comprises vacuum interrupter, isolator, earthing switch, main bus, branch generating line and solid insulation filler.
In a preferred embodiment of the invention, the explosion venting plate is mounted in a manner that one side of the explosion venting plate is hinged with the switch cabinet through a rotating shaft, and the other side of the explosion venting plate is locked with the switch cabinet through an explosion-proof bolt.
In a preferred embodiment of the invention, the solid insulating filler is a mixture of epoxy resin and ethylene propylene diene monomer, and the weight ratio of the components is 10: 3.
In a preferred embodiment of the present invention, the vacuum arc-extinguishing chamber includes a long tubular housing made of an insulating material and having a vacuum inside, and the housing is provided with a line inlet end, a fixed contact, a movable contact, a strap contact finger, a grounding movable contact, an insulating pull rod, a bellows and a linkage shaft at a time along an axial direction of the housing.
In a preferred embodiment of the present invention, the wire inlet end is fixed at one end of the housing and is fixedly connected to the static contact, the moving contact is connected to the grounding moving contact through a watchband contact finger, a cylindrical wire outlet end is provided at the periphery of the watchband contact finger and is fixed on the housing, one side of the wire outlet end extends out of the housing and is connected to an external circuit outside the housing, a cylindrical grounding static contact is provided at the periphery of the grounding moving contact and is fixed on the housing, the grounding moving contact is connected to the bellows through an insulating pull rod, the bellows is connected to the linkage shaft, and the linkage shaft penetrates through the end of the other end of the housing.
In a preferred embodiment of the present invention, an annular notch adapted to the lower portion of the grounding moving contact is disposed at the upper portion of the inner side of the grounding fixed contact, and when the grounding moving contact moves downward and axially to the grounding fixed contact, the grounding moving contact is embedded in the annular notch; the upper part of the corrugated pipe is fixedly connected with a locking plate which is circumferentially fixed on the inner wall of the shell, the lower part of the corrugated pipe is fixed on the bottom of the shell, and the corrugated pipe has elasticity; when the moving contact is contacted with the fixed contact, the distance between the moving contact and the upper surface of the outlet end is more than or equal to the distance between the grounding moving contact and the annular notch; and the lower end of the linkage shaft is provided with a positioning screw hole.
In a preferred embodiment of the invention, a layer of silicon rubber is vulcanized on the surface of the shell of the vacuum arc extinguish chamber.
In a preferred embodiment of the present invention, the outer side of the outer arc discharge area is uniformly distributed with air discharge holes.
In a preferred embodiment of the invention, the surface of the arc ignition channel is coated with a layer of finish paint.
In a preferred embodiment of the invention, the finishing paint comprises polytetrafluoroethylene, a non-combustible film-forming substance, sodium chloride, ammonium phosphate, ammonium borate and quartz powder.
Compared with the prior art, the invention has the beneficial effects that:
(1) the vacuum arc extinguishing chamber, the arc striking channel and the explosion releasing plate are combined, so that the switch cabinet fundamentally realizes the functions of arc extinguishing, arc striking and explosion prevention, and the safety performance of the switch cabinet is improved;
(2) the arc extinguishing chamber is simple and convenient in structure, the whole arc extinguishing chamber is in a vacuum state, the arc extinguishing function can be really realized, and the safety performance is better;
(3) the utility model provides an arc striking passageway and let out and explode the board and can in time carry out the pressure release cooling to the compartment of arcing, effectively avoid the emergence of the cabinet body blasting phenomenon because of the arcing arouses.
Drawings
Fig. 1 is a schematic structural diagram of a preferred embodiment of an arc extinguishing switchgear of the present invention;
fig. 2 is a schematic structural diagram of a vacuum arc-extinguishing chamber of a preferred embodiment of an arc-extinguishing switch cabinet of the invention;
in the figure, 1-external arc discharge area, 2-instrument room, 21-arc discharge channel a, 22-explosion discharge plate a, 3-breaker room, 31-arc discharge channel b, 32-explosion discharge plate b, 4-insulating box room, 41-arc discharge channel c, 412-explosion discharge plate c, 42-vacuum arc extinguish chamber, 421-shell, 422-wire inlet end, 423-static contact, 424-movable contact, 425-watchband contact finger, 426-grounding movable contact, 427-insulating pull rod, 428-corrugated pipe, 429-linkage shaft, 4210-wire outlet end, 4211-grounding static contact, 4212-shielding cover, 4213-annular notch, 4214-locking plate, 4215-positioning screw hole, 5-wire inlet room, 51-arc discharge channel d and 52-explosion discharge plate d.
Detailed Description
The present invention will be described in further detail with reference to the following drawings and examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Please refer to fig. 1, which is a schematic structural diagram of a preferred embodiment of an arc extinguishing switch cabinet of the present invention, the arc extinguishing switch cabinet comprises an external arc discharge area 1, an instrument room 2, a breaker room 3, an insulation box room 4, a wire inlet room 5, an arc striking channel a21 for communicating the external arc discharge area 1 and the instrument room 2, an arc striking channel b31 for communicating the external arc discharge area 1 and the breaker room 3, an arc striking channel c41 for communicating the external arc discharge area 1 and the insulation box room 4, and an arc striking channel d51 for communicating the external arc discharge area 1 and the wire inlet room 5, the outlets of the arc ignition channel a21, the arc ignition channel b31, the arc ignition channel c41 and the arc ignition channel d51 are respectively provided with an explosion venting plate a22, an explosion venting plate b32, an explosion venting plate c412 and an explosion venting plate d52, the insulating box of the insulating box chamber 4 is composed of a vacuum arc-extinguishing chamber 42, an isolating switch, a grounding switch, a main bus, a branch bus and solid insulating filler.
In this embodiment, let out the mounting means that explodes the board and do, let out one side of exploding the board and articulate mutually with the cubical switchboard through the pivot, the opposite side is through explosion-proof bolt and cubical switchboard locking.
In a preferred embodiment of the invention, the solid insulating filler is a mixture of epoxy resin and ethylene propylene diene monomer, and the weight ratio of the components is 10: 3.
Referring to fig. 2, which is a schematic structural diagram of the vacuum interrupter of this embodiment, in this embodiment, the vacuum interrupter 42 includes an elongated tubular outer shell 421 made of an insulating material and having a vacuum inside, and the outer shell 421 is provided with a wire inlet end 422, a fixed contact 423, a movable contact 424, a strap contact finger 425, a grounding movable contact 426, an insulating pull rod 427, a bellows 428, and a linkage shaft 429 along an axial direction thereof at a time.
In this embodiment, the wire inlet end 422 is fixed at one end of the outer shell 421, the wire inlet end 422 is fixedly connected to the fixed contact 423, and the outer peripheries of the fixed contact 423 and the movable contact 424 are provided with a cylindrical shield 4212 fixed in the outer shell 421. The shield 4212 has an arc extinguishing function.
In a preferred embodiment of the present invention, the movable contact 424 is connected to the grounding movable contact 426 through a watchband contact finger 425, and the watchband contact finger 425 has a good function of switching between a power-on state and a power-off state.
In a preferred embodiment of the present invention, a cylindrical outlet 4210 solidified on the case 421 is disposed at the periphery of the strap contact finger 425, and one side of the outlet 4210 extends out of the case 421 and is connected to an external circuit outside the case 421.
In a preferred embodiment of the present invention, the grounding moving contact 426 is provided with a cylindrical grounding static contact 4211 fixed on the outer shell 421 at the periphery thereof, and one side of the grounding static contact 4211 extends out of the outer shell 421 and is grounded.
In a preferred embodiment of the present invention, the grounding movable contact 426 is connected to the bellows 428 by an insulating rod 427, and the insulating rod 427 is made of a solid insulating material and has a wavy surface.
In a preferred embodiment of the present invention, the bellows 428 is connected to the linkage rod 429, and the linkage rod 429 passes through the other end of the housing 421.
In a preferred embodiment of the invention, the lower end of the linkage shaft 429 is provided with a positioning screw hole 4215.
In a preferred embodiment of the present invention, the upper portion of the bellows 428 is fixedly connected to the latch plate 4214 circumferentially fixed to the inner wall of the outer shell 421, and the lower portion of the bellows 428 is fixed to the bottom of the outer shell 421, and the bellows 428 has elasticity; when the moving contact 424 contacts with the fixed contact 423, the arc extinguish chamber is in a closing state; pulling the linkage shaft 429 to drive the moving contact 424 to be separated from the fixed contact 423, so that the arc extinguish chamber is in a brake-off state; when the linkage shaft 429 is pulled to enable the grounding movable contact 426 to be contacted with the grounding fixed contact 4211, the arc extinguish chamber is in a grounding state.
In a preferred embodiment of the present invention, the upper portion of the inside of the grounding fixed contact 4211 is provided with an annular notch 4213 corresponding to the lower portion of the grounding movable contact 426, and when the grounding movable contact 426 axially moves downward to the position of the grounding fixed contact 4211, the grounding movable contact 426 is inserted into the annular notch 4213.
In a preferred embodiment of the present invention, the distance between the movable contact 424 and the upper surface of the outlet terminal 4210 is greater than or equal to the distance between the grounding movable contact 426 and the annular notch 4213.
In a preferred embodiment of the present invention, the surface of the outer shell 421 of the vacuum arc-extinguishing chamber 42 is vulcanized with a layer of silicon rubber to increase the insulating property of the switch cabinet.
In this embodiment, exhaust holes are uniformly distributed on the outer side of the outer arc discharge area 1.
In this embodiment, the surface of the arc ignition channel is coated with a layer of finish.
In this embodiment, the finish paint comprises polytetrafluoroethylene, a non-combustible film-forming substance, sodium chloride, ammonium phosphate, ammonium borate and quartz powder.
Furthermore, incombustible film forming substances, sodium chloride, ammonium phosphate, ammonium borate and quartz powder are added into the polytetrafluoroethylene coating, so that the fireproof and heat-resistant performances can be effectively improved.
The vacuum arc extinguishing chamber, the arc striking channel and the explosion releasing plate are combined, so that the switch cabinet fundamentally realizes the functions of arc extinguishing, arc striking and explosion prevention, and the safety performance of the switch cabinet is improved; the arc extinguishing chamber is simple and convenient in structure, the whole arc extinguishing chamber is in a vacuum state, the arc extinguishing function can be really realized, and the safety performance is better; the arc striking channel and the explosion venting plate can timely carry out pressure relief cooling on the arcing compartment, and the occurrence of cabinet body explosion phenomenon caused by arcing is effectively avoided.
While the foregoing description shows and describes the preferred embodiments of the present invention, it is to be understood that the invention is not limited to the forms disclosed herein, but is not to be construed as excluding other embodiments and is capable of use in various other combinations, modifications, and environments and is capable of changes within the scope of the inventive concept as described herein, commensurate with the above teachings, or the skill or knowledge of the relevant art. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. The arc extinguishing switch cabinet is characterized by comprising an external arc discharge area (1), an instrument room (2), a circuit breaker room (3), an insulating box room (4) and a wire inlet room (5), and further comprising an arc striking channel a (21) communicated with the external arc discharge area (1) and the instrument room (2), an arc striking channel b (31) communicated with the external arc discharge area (1) and the circuit breaker room (3), an arc striking channel c (41) communicated with the external arc discharge area (1) and the insulating box room (4), and an arc striking channel d (51) communicated with the external arc discharge area (1) and the wire inlet room (5), wherein an explosion venting plate a (22), an explosion venting plate b (32), an explosion venting plate c (412) and an explosion venting plate d (52) are respectively arranged at the outlets of the arc striking channel a (21), the arc striking channel b (31), the arc striking channel c (41) and the arc striking channel d (51), and an insulating box of the insulating box room (4) is formed by a vacuum arc extinguishing chamber (42), The isolating switch, the grounding switch, the main bus, the branch bus and the solid insulating filler.
2. An arc suppressing switchgear as claimed in claim 1, wherein: the explosion venting plate is installed in a mode that one side of the explosion venting plate is hinged with the switch cabinet through a rotating shaft, and the other side of the explosion venting plate is locked with the switch cabinet through an explosion-proof bolt.
3. An arc suppressing switchgear as claimed in claim 1, wherein: the solid insulating filler is a mixture of epoxy resin and ethylene propylene diene monomer, and the weight ratio of the components is 10: 3.
4. An arc suppressing switchgear as claimed in claim 1, wherein: the vacuum arc-extinguishing chamber (42) comprises a long tubular outer shell (421) which is made of insulating materials and is internally vacuum, and the outer shell (421) is provided with a wire inlet end (422), a static contact (423), a moving contact (424), a watchband contact finger (425), a grounding moving contact (426), an insulating pull rod (427), a corrugated pipe (428) and a linkage shaft (429) along the axial direction of the outer shell at one time.
5. An arc suppressing switchgear as claimed in claim 1, wherein: the grounding moving contact is characterized in that the wire inlet end (422) is solidified at one end of the shell (421), the wire inlet end (422) is fixedly connected with the static contact (423), the moving contact (424) is connected with the grounding moving contact (426) through the watchband contact finger (425), a cylindrical wire outlet end (4210) solidified on the shell (421) is arranged on the periphery of the watchband contact finger (425), one side of the wire outlet end (4210) extends out of the shell (421) and is connected with an external circuit outside the shell (421), a cylindrical grounding static contact (4211) solidified on the shell (421) is arranged on the periphery of the grounding moving contact (426), the grounding moving contact (426) is connected with the corrugated pipe (428) through an insulating pull rod (427), the corrugated pipe (428) is connected with the linkage shaft (429), and the linkage shaft (429) penetrates out of the end of the other end of the shell (421).
6. An arc suppressing switchgear as claimed in claim 1, wherein: the upper part of the inner side of the grounding fixed contact (4211) is provided with an annular notch (4213) matched with the lower part of the grounding moving contact (426), and when the grounding moving contact (426) axially moves downwards to the position of the grounding fixed contact (4211), the grounding moving contact (426) is embedded into the annular notch (4213); the upper part of the corrugated pipe (428) is fixedly connected with a locking plate (4214) which is circumferentially fixed on the inner wall of the shell (421), the lower part of the corrugated pipe is fixed on the bottom of the shell (421), and the corrugated pipe (428) has elasticity; when the moving contact (424) is in contact with the fixed contact (423), the distance between the moving contact (424) and the upper surface of the wire outlet end (4210) is greater than or equal to the distance between the grounding moving contact (426) and the annular notch (4213); the lower end of the universal driving shaft (429) is provided with a positioning screw hole (4215).
7. An arc suppressing switchgear as claimed in claim 1, wherein: and a layer of silicon rubber is vulcanized on the surface of the shell (421) of the vacuum arc-extinguishing chamber (42).
8. An arc suppressing switchgear as claimed in claim 1, wherein: and air exhaust holes are uniformly distributed on the outer side of the outer arc exhaust area (1).
9. An arc suppressing switchgear as claimed in claim 1, wherein: and a layer of finish paint is coated on the surface of the arc striking channel.
10. An arc suppressing switchgear as claimed in claim 9, wherein: the finishing coat comprises the components of polytetrafluoroethylene, a non-combustible film forming substance, sodium chloride, ammonium phosphate, ammonium borate and quartz powder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010208005.9A CN111490487A (en) | 2020-03-23 | 2020-03-23 | Arc extinguishing switch cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010208005.9A CN111490487A (en) | 2020-03-23 | 2020-03-23 | Arc extinguishing switch cabinet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111490487A true CN111490487A (en) | 2020-08-04 |
Family
ID=71810823
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010208005.9A Pending CN111490487A (en) | 2020-03-23 | 2020-03-23 | Arc extinguishing switch cabinet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111490487A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103683016A (en) * | 2013-11-30 | 2014-03-26 | 国家电网公司 | Modular stacked switch cabinet |
| CN108292830A (en) * | 2015-12-02 | 2018-07-17 | 三菱电机株式会社 | Gas-insulated switchgear device |
| CN109449813A (en) * | 2018-12-28 | 2019-03-08 | 南通苏源恒炫电气有限公司 | A kind of highland and severe cold type solid-state insulated switchgear |
| EP3518358A1 (en) * | 2016-09-26 | 2019-07-31 | Hitachi Industrial Equipment Systems Co., Ltd. | Switchgear |
-
2020
- 2020-03-23 CN CN202010208005.9A patent/CN111490487A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103683016A (en) * | 2013-11-30 | 2014-03-26 | 国家电网公司 | Modular stacked switch cabinet |
| CN108292830A (en) * | 2015-12-02 | 2018-07-17 | 三菱电机株式会社 | Gas-insulated switchgear device |
| EP3518358A1 (en) * | 2016-09-26 | 2019-07-31 | Hitachi Industrial Equipment Systems Co., Ltd. | Switchgear |
| CN109449813A (en) * | 2018-12-28 | 2019-03-08 | 南通苏源恒炫电气有限公司 | A kind of highland and severe cold type solid-state insulated switchgear |
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Application publication date: 20200804 |