WO2020233916A1 - Gas insulation switch connecting device and gas insulation switch - Google Patents
Gas insulation switch connecting device and gas insulation switch Download PDFInfo
- Publication number
- WO2020233916A1 WO2020233916A1 PCT/EP2020/060837 EP2020060837W WO2020233916A1 WO 2020233916 A1 WO2020233916 A1 WO 2020233916A1 EP 2020060837 W EP2020060837 W EP 2020060837W WO 2020233916 A1 WO2020233916 A1 WO 2020233916A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- gas insulation
- insulation switch
- flange body
- bowl
- type insulator
- Prior art date
Links
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
- H02B13/02—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle with metal casing
- H02B13/035—Gas-insulated switchgear
- H02B13/0356—Mounting of monitoring devices, e.g. current transformers
Abstract
The present utility model provides a gas insulation switch connecting device (10) and a gas insulation switch, said gas insulation switch connecting device comprising: an isolation break shell (1), comprising a first connecting end (2); a bowl-type insulator (3) disposed corresponding to said first connecting end; a movable-end conductor (5), disposed on said bowl-type insulator, comprising a free-end portion (51) and connected to an external voltage mutual inductor (7); a stationary-end conductor (6), comprising a projecting portion (61); and a flange (4), for combining said first connecting end and said bowl-type insulator, said flange comprising a flange body (41) and a connecting member that is combined with said first connecting end and said bowl-type insulator, respectively; when said flange body is rotatable relative to said first connecting end, said movable-end conductor is movable between a position in which said free-end portion and said projecting portion are electrically connected and a position in which said free-end portion and said projecting portion form a break; therefore, during a power frequency experiment, without the need of opening a sealed compartment that interconnects the gas insulation switch connecting device and the voltage mutual inductor, a break is manually disassembled, thus making it more convenient to perform a power frequency experiment on the gas insulation switch.
Description
GAS INSULATION SWITCH CONNECTING DEVICE AND GAS INSULATION SWITCH
Technical Field
The present utility model relates to a gas insulation switch connecting device, in particular to a gas insulation switch connecting device provided with an isolation break and a gas insulation switch.
Background Art
A gas insulation switch (GIS) apparatus is generally installed between a mains side and a load side of a power supply system to safely switch off an electric current, thereby protecting the power supply system and the loaded equipment. On a service site of a GIS apparatus, a voltage mutual inductor connected to the GIS apparatus needs to disassemble an isolation break for a power frequency experiment .
An existing isolation break disassembly solution includes: a voltage mutual inductor apparatus comprising an apparatus of a manual isolation break, allowing an isolation break to be obtained in the voltage mutual inductor by performing a manual operation outside a voltage mutual inductor compartment; or by opening a sealed compartment between the voltage mutual inductor and a gas insulation switch or a gas insulation switch connecting device, manually disassembling an isolation break, and then reassembling the break after completion of a power frequency experiment.
In order to achieve a gas insulation switch connecting device that has a compact design and a simple structure, delivers stable performance, and provides convenience of performing a power frequency experiment, a novel gas insulation switch connecting device provided with an isolation break is needed.
Summary of the Utility Model
An objective of the present utility model is to provide a gas insulation switch connecting device and a gas insulation switch that are capable of solving the above-mentioned and/or other technical problems, allowing an isolation break to be disassembled without opening a sealed compartment interconnecting a voltage mutual inductor and the gas insulation switch or the gas insulation switch connecting device, and that have compact designs and simple structures, deliver stable performance, and provide convenience of performing a power frequency experiment.
In one aspect, the present utility model provides a gas insulation switch connecting device that comprises: an isolation break shell provided with an accommodating space, said isolation break shell comprising a first connecting end; a bowl-type insulator, said bowl-type insulator being disposed corresponding to said first connecting end; a movable-end conductor, disposed on said bowl-type insulator, wherein when said bowl-type insulator and said first connecting end are combined, said movable-end conductor extends in said accommodating space, said movable-end conductor comprising
a free-end portion, said free-end portion being connected to an external voltage mutual inductor; a stationary-end conductor, comprising a projecting portion, said stationary-end conductor being disposed in said accommodating space; a flange, configured to combine said first connecting end of said isolation break shell with said bowl-type insulator, comprising a flange body, a first connecting member, and a second connecting member, wherein said first connecting member is configured to detachably combine said flange body with said first connecting end, and said second connecting member is configured to fixedly combine said bowl-type insulator with said flange body; wherein when said first connecting member is removed from said first connecting end or said flange body, said bowl-type insulator and said flange body, fixedly combined with each other, are rotatable relative to said first connecting end, so that said movable-end conductor, in said isolation break shell, is movable between a first position in which said free-end portion and said projecting portion are electrically connected and a second position in which said free-end portion and said projecting portion form an electric disconnection. Since a free-end portion of the movable-end conductor and a projecting portion of the stationary-end conductor may be electrically connected or electrically disconnected simply by rotating the flange body, during a power frequency experiment, an isolation break may be manually disassembled without opening a sealed compartment interconnecting the voltage mutual inductor and the gas insulation switch connecting device; thus, a power frequency experiment may be performed on a gas insulation switch more conveniently; in addition, said gas insulation switch connecting
device has a simple structure and is easy to maintain.
Optionally, the flange body of the gas insulation switch connecting device comprises a first screw hole, said first connecting member comprises a first bolt that corresponds to said first screw hole, and said first connecting end comprises a first connecting hole disposed in a position corresponding to said first screw hole, wherein said first bolt fits a thread of said first screw hole through said first connecting hole so that said flange body and said first connecting end are fixedly combined; said flange body comprises a second screw hole, said second connecting member comprises a second bolt that corresponds to said second screw hole, and said bowl-type insulator comprises a second connecting hole disposed in a position corresponding to said second screw hole, wherein said second bolt fits a thread of said second screw hole through said second connecting hole so that said flange body and said bowl-type insulator are fixedly combined.
Optionally, said first connecting end of the gas insulation switch connecting device comprises a groove located on a lateral surface thereof, and the flange body comprises a limit portion corresponding to a lateral surface of said first connecting end, wherein said limit portion comprises a limit through hole that corresponds to said groove, and said gas insulation switch connecting device further comprises a limit bolt, said limit bolt being combined with said groove through said limit through hole.
Optionally, in the gas insulation switch connecting device, said
free-end portion and an extensional direction of said movable-end conductor form an included angle. Since a free-end portion of the movable-end conductor and a projecting portion of the stationary-end conductor may be electrically connected or electrically disconnected simply by rotating the flange body, during a power frequency experiment, an isolation break may be disassembled without opening a sealed compartment interconnecting the voltage mutual inductor and the gas insulation switch connecting device, that is, by keeping the gas insulation switch connecting device and the voltage mutual inductor in a sealed state, thereby making it more convenient to perform a power frequency experiment on a gas insulation switch.
Optionally, the gas insulation switch connecting device further comprises: an electric connector, located in said projecting portion; a bolt, for connecting said electric connector to said projecting portion; and a spring, disposed between said electric connector and said bolt; wherein when said free-end portion is located in a first position, said free-end portion comes into contact with and presses said electric connector towards said projecting portion, thereby being electrically connected to said projecting portion, and when said free-end portion is located in a second position, said electric connector, under the action of an elastic force applied by said electric connector, moves in a direction away from said projecting portion.
Optionally, in the gas insulation switch connecting device, the flange body comprises an operating handle that is disposed on a
lateral surface of said flange body, making it convenient to rotate the flange, so that a free-end portion of the movable-end conductor and a projecting portion of the stationary-end conductor may be electrically connected or electrically disconnected.
In a second aspect, the present utility model further provides a gas insulation switch, said gas insulation switch comprising a voltage mutual inductor and the above-described gas insulation switch connecting device . Therefore, when a first connecting member between the flange body and the first connecting end is to be removed, a free-end portion of the movable-end conductor and a projecting portion of the stationary-end conductor may be electrically connected or electrically disconnected simply by rotating the flange; thus, during a power frequency experiment, without the need of opening a sealed compartment that interconnects the gas insulation switch connecting device and the voltage mutual inductor, a break is manually disassembled, making it more convenient to perform a power frequency experiment on the gas insulation switch; in addition, the gas insulation switch has a simple structure and is easy to maintain.
Brief Description of the Drawings
The following drawings are only intended to schematically describe and explain the present utility model, instead of limiting the scope of the present utility model. Among them,
Figure l isa structural diagram for a state in which a gas insulation
switch connecting device is disconnected from a connected voltage mutual inductor according to an exemplary embodiment;
Figure 2 is a structural diagram for a state in which a gas insulation switch connecting device is electrically connected to a connected voltage mutual inductor according to an exemplary embodiment;
Figure 3 is a partial structural diagram for a state in which a movable-end conductor is disconnected from a connector of a stationary-end conductor according to an exemplary embodiment;
Figure 4 is a partial structural diagram for a state in which a movable-end conductor is electrically connected to a connector of a stationary-end conductor according to an exemplary embodiment; and
Figure 5 is a partial assembly structural diagram for the rotation of a flange according to an exemplary embodiment.
1: Isolation break shell 2: First connecting end
21: Groove 3: Bowl-type insulator 4: Flange
41: Flange body 42: Hinged bolt 43: Fixed bolt
44: Operating handle 45: Limit portion 451: Limit bolt
5: Movable-end conductor 51: Free-end portion
6: Stationary-end conductor 61: Projecting portion
611: Electric connector 612: Compressible spring
613: Bolt 7: Voltage mutual inductor
10: Gas insulation switch connecting device
Specific Embodiments
In order to provide a better understanding of the technical features, objectives, and beneficial effects of the present utility model, specific embodiments of the present utility model will be described below with reference to the drawings, in which the same reference numerals denote the same parts. Note that a voltage transformer is a voltage mutual inductor.
Figure l isa structural diagram for a state in which a gas insulation switch connecting device is disconnected from a connected voltage mutual inductor according to an exemplary embodiment, and Figure 2 is a structural diagram for a state in which a gas insulation switch connecting device is electrically connected to a connected voltage mutual inductor according to an exemplary embodiment . As shown in Figures 1 and 2, the gas insulation switch connecting device 10 may at least comprise: an isolation break shell 1, a first connecting end 2, a bowl-type insulator 3, a flange 4, a movable-end conductor 5, and a stationary-end conductor 6.
The isolation break shell 1 may be a welded piece or a metallic cast piece having a hollow cavity as an accommodating space, and branch cavities extendable all around; end portions of each branch cavity may be disposed as connecting ends; by these connecting ends, connection is established to other modules of other gas insulation switches .
The first connecting end 2 may be disposed in an end portion in a vertical direction of the isolation break shell 1 and may function as a connecting end for combining with an external voltage mutual inductor 7.
The bowl-type insulator 3 may be disposed corresponding to the first connecting end 2, and one surface of the bowl-type insulator 3 is combined with the external voltage mutual inductor 7.
The movable-end conductor 5 may be disposed on the bowl-type insulator 3 and extend towards the accommodating space in the isolation break shell 1. The movable-end conductor 5 further comprises a free-end portion 51, and said free-end portion 51 may form an included angle with a vertical direction. The movable-end conductor 5 may be connected to the voltage mutual inductor 7.
The flange 4 may combine the first connecting end 2 and the bowl-type insulator 3, and may comprise a flange body 41, a hinged bolt 42, and a fixed bolt 43. One surface of the flange body 41 may be installed on the first connecting end 2; in the position where the lower surface of the flange body 41 and the first connecting end 2 are combined, a screw hole and a connecting hole may be made separately; The hinged bolt 42 may fit the screw hole through the connecting hole, so that the flange body 41 and the first connecting end 2 are fixedly combined. When the hinged bolt 42 is removed from the flange body 41, the flange body 41 is rotatable relative to the first connecting end 2. In the position where the upper surface of the flange body 41 and the bowl-type insulator 3 are combined,
a screw hole and a connecting hole that corresponds thereto are made separately, and the fixed bolt 43 may fit the screw hole through the connecting hole, so that the flange body 41 and the bowl-type insulator 3 are fixedly connected to each other. In addition, on a lateral surface of the flange body 4, an operating handle 44 may be further disposed making it convenient to rotate the flange body 41.
In addition, a limit portion 45 is further disposed in the position where the flange body 41 corresponds to a lateral surface of the first connecting end 2, a groove 21 is disposed on a lateral surface of the first connecting end 2, and at least one limit through hole is disposed on the limit portion 45. The limit bolt 451 may be adjustably installed in the groove 21 through the limit through hole. The combination between the limit bolt 451 and the groove 21 is tightened or loosened so that the flange body 4 remains stable with the first connecting end 2 when rotating, without overturning the flange body 4, the bowl-type insulator 3, or the external voltage mutual inductor 7.
The stationary-end conductor 6 may extend in a horizontal direction in the accommodating space of the isolation break shell 1, that is, being disposed in an extensional direction perpendicular to the movable-end conductor 5, and be fixed to a bowl-type insulator of the isolation break shell 1 on a connection break disposed in the horizontal direction. The stationary-end conductor 6 may comprise a projecting portion 61; said projecting portion 61 may be disposed at an eccentric point of the stationary-end conductor
6, that is, forming an included angle with an extensional direction of the movable-end conductor 5, thus ensuring that when the free-end portion 51 moves to the proximal end of the projecting portion 61, the free-end portion 51 comes into contact with the projecting portion 61.
As shown in Figure 1, when the hinged bolt 42 is adjusted to separate the hinged bolt 42 from the flange body 41, the flange body 41 and the bowl-type insulator 3 are rotatable relative to the first connecting end 2. By rotating the flange body 41, the flange body 4 and the bowl-type insulator 3 that is fixedly combined therewith are caused to become rotatable relative to the first connecting end 2, so that the movable-end conductor 5 rotates in the accommodating space. When the free-end portion 51 of the movable-end conductor 5 reaches a position away from the projecting portion 61, an isolation break is formed, and the free-end portion 51 is electrically disconnected from the projecting portion 61, allowing a power frequency experiment to be performed. Likewise, as shown in Figure 2, after completion of the above-mentioned power frequency experiment, by rotating the flange body 4, the flange body 4 and the bowl-type insulator 3 that is fixedly combined therewith are caused to become rotatable relative to the first connecting end, so that the free-end portion 51 of the movable-end conductor 5 reaches a position coming into contact with the projecting portion 61 and an electrical connection is formed.
Preferably, in a horizontal direction of the isolation break shell 1, namely, in the direction of the disposition of the stationary-end
conductor 6, a second connecting end is disposed for establishing a connection to another module of the gas insulation switch, and another bowl-type insulator is disposed at the connection break for fixing the stationary-end conductor 6.
Figure 3 is a partial structural diagram for a state in which a movable-end conductor is disconnected from a connector of a stationary-end conductor according to an exemplary embodiment; Figure 4 is a partial structural diagram for a state in which a movable-end conductor is electrically connected to a connector of a stationary-end conductor according to an exemplary embodiment. As shown in Figures 3 and 4, the bottom of the electric connector
611 is installed on a compressible spring 612, and, with a bolt 613, the electric connector 611 is connected to the projecting portion 61 of the stationary-end conductor 6. When the free-end portion 51 moves to a position coming into contact with the electric connector 611 of the stationary-end conductor 6, the electric connector 611 is pressed in a direction of the free-end portion 51 facing the stationary-end conductor 6; the compressible spring
612 is pressed and the electric connector 611 comes into contact with the free-end portion 51 of the movable-end conductor 5, so that the free-end portion 51 and the projecting portion 61 are electrically connected, and thus the movable-end conductor 5 and the stationary-end conductor 6 are electrically connected. When the free-end portion 51 of the movable-end conductor 5 moves to a position where an isolation break is formed with the stationary-end conductor 6, the electric connector 611, under the action of the elastic force applied by the compressible spring 612,
moves in a direction away from the projecting portion 61; at this point, the free-end portion 51 is electrically disconnected from the projecting portion 61, and an isolation break is formed between the movable-end conductor 5 and the stationary-end conductor 6.
Figure 5 is a partial assembly structural diagram for the rotation of a flange according to an exemplary embodiment. As shown in Figure 5, in order to allow the combination of the flange 4 and the bowl-type insulator 3 to be rotatable relative to the first connecting end 2, a surface of the flange body 41 may be installed on the first connecting end 2; in a position where the flange body 41 comes into contact with the first connecting end 2, a screw hole and a connecting hole may be made separately, and the hinged bolt 42 may be combined with the screw hole through the connecting hole, so that the flange body 41 is fixedly combined with the first connecting end 2. When the hinged bolt 42 is adjusted and removed from the flange body 41, the flange body 41 and the bowl-type insulator 3 are rotatable relative to the first connecting end 2. In the position where the flange body 41 and the bowl-type insulator 3 are combined, a screw hole and a connecting hole that corresponds thereto are made separately, and the fixed bolt 43 may be combined with the screw hole through the connecting hole, so that the flange body 4 and the bowl-type insulator 3 are fixedly connected to each other. In addition, on a lateral surface of the flange body 41, an operating handle 44 may be further disposed making it convenient to rotate the flange body 41.
In addition, a limit portion 45 is further disposed in the position
where the flange body 41 corresponds to a lateral surface of the first connecting end 2, a groove 21 is disposed on a lateral surface of the first connecting end 2, and at least one limit through hole is disposed on the limit portion 45; the limit bolt 451 corresponding to the limit through hole is adjustably installed in the groove 21 through the limit through hole. The combination between the limit bolt 451 and the groove 21 is tightened or loosened so that the flange body 4 remains relatively stable with the first connecting end 2 when rotating, without overturning the flange body 4, the bowl-type insulator, or the external voltage mutual inductor 7.
The present utility model further provides a gas insulation switch, comprising a gas insulation switch connecting device 10 as described above and a voltage mutual inductor 7; a bowl-type insulator of the device that is disposed corresponding to the first connecting end 2 and a movable-end conductor 5 are configured to be connected to the voltage mutual inductor 7.
It should be understood that although the specification describes the embodiments separately, an embodiment does not contain only one independent technical solution, and that such a method of description is only for the sake of clarity; those of ordinary skill in the art should treat the specification as a whole, and the technical solutions provided in the embodiments can be appropriately combined to form other embodiments that can be understood by those of ordinary skill in the art .
The above-described specific embodiments are only illustrative of
the present utility model, instead of limiting the scope of the present utility model. Any equivalent variations, modifications, or combinations made by those of ordinary skill in the art without departing from the spirit or principle of the prevent utility model shall fall into the scope of the present utility model.
Claims
1. A gas insulation switch connecting device, characterized by comprising :
an isolation break shell (1) provided with an accommodating space, said isolation break shell (1) comprising a first connecting end (2) ;
a bowl-type insulator (3) , said bowl-type insulator (3) being disposed corresponding to said first connecting end (2);
a movable-end conductor (5), disposed on said bowl-type insulator (3), wherein when said bowl-type insulator (3) and said first connecting end (2) are combined, said movable-end conductor (5) extends in said accommodating space, said movable-end conductor (5) comprising a free-end portion (51), said movable-end conductor (5) being connected to an external voltage mutual inductor (7); a stationary-end conductor (6), comprising a projecting portion (61), said stationary-end conductor (6) being disposed in said accommodating space;
a flange (4), configured to combine said first connecting end (2) of said isolation break shell (1) with said bowl-type insulator (3) , comprising a flange body (41) , a first connecting member, and a second connecting member, wherein said first connecting member is configured to detachably combine said flange body (41) with said first connecting end (2), and said second connecting member is configured to fixedly combine said bowl-type insulator (3) with said flange body (41);
wherein when said first connecting member is removed from said first
connecting end (2) or said flange body (41), said bowl-type insulator (3) and said flange body (41) , fixedly combined with each other, are rotatable relative to said first connecting end (2), so that said movable-end conductor (5) is movable between a first position in which said free-end portion (51) and said projecting portion (61) are electrically connected and a second position in which said free-end portion (51) and said projecting portion (61) form an electric disconnection.
2. The gas insulation switch connecting device as claimed in claim
1, characterized in that
said flange body (41) comprises a first screw hole, said first connecting member comprises a first bolt (42) that corresponds to said first screw hole, and said first connecting end (2) comprises a first connecting hole disposed in a position corresponding to said first screw hole, wherein said first bolt (42) fits a thread of said first screw hole through said first connecting hole so that said flange body (41) and said first connecting end (2) are fixedly combined;
said flange body (41) comprises a second screw hole, said second connecting member comprises a second bolt (43) that corresponds to said second screw hole, and said bowl-type insulator (3) comprises a second connecting hole disposed in a position corresponding to said second screw hole, wherein said second bolt (43) fits a thread of said second screw hole through said second connecting hole so that said flange body (41) and said bowl-type insulator (3) are fixedly combined.
3. The gas insulation switch connecting device as claimed in claim 1, characterized in that
said first connecting end (2) comprises a groove (21) located on a lateral surface thereof;
said flange body (41) comprises:
a limit portion (45) corresponding to a lateral surface of said first connecting end (2);
wherein limit portion (45) comprises a limit through hole that corresponds to said groove (21);
said gas insulation switch connecting device further comprises a limit bolt (451), said limit bolt (451) being combined with said groove (21) through said limit through hole.
4. The gas insulation switch connecting device as claimed in claim 1, characterized in that said free-end portion (51) and an extensional direction of said movable-end conductor (5) form an included angle .
5. The gas insulation switch connecting device as claimed in claim 1, characterized by further comprising:
an electric connector (611), located in said projecting portion (61) ;
a bolt (613), for connecting said electric connector (611) to said projecting portion (61); and
a spring (612), disposed between said electric connector (611) and said bolt (613) ;
wherein when said free-end portion (51) is located in a first position, said free-end portion (51) comes into contact with and
presses said electric connector (611) towards said projecting portion (61), thereby being electrically connected to said projecting portion (61), and when said free-end portion (51) is located in a second position, said electric connector (611) , under the action of an elastic force of a spring (612) , moves in a direction away from said projecting portion (61) .
6. The gas insulation switch connecting device as claimed in claim 1, characterized in that said flange body (41) comprises an operating handle (44) that is disposed on a lateral surface of said flange body (41) .
7. A gas insulation switch, characterized by comprising:
a voltage mutual inductor (7);
and a gas insulation switch connecting device (10) as claimed in any one of claims 1~6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP20720413.2A EP3956957A1 (en) | 2019-05-20 | 2020-04-17 | Gas insulation switch connecting device and gas insulation switch |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920725705.8 | 2019-05-20 | ||
| CN201920725705.8U CN209658073U (en) | 2019-05-20 | 2019-05-20 | Gas-insulated switch attachment device and gas-insulated switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2020233916A1 true WO2020233916A1 (en) | 2020-11-26 |
Family
ID=68530442
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2020/060837 WO2020233916A1 (en) | 2019-05-20 | 2020-04-17 | Gas insulation switch connecting device and gas insulation switch |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP3956957A1 (en) |
| CN (1) | CN209658073U (en) |
| WO (1) | WO2020233916A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112636230B (en) * | 2020-12-07 | 2023-04-14 | 河南平高电气股份有限公司 | Transition bus for GIS and GIS |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0008817A1 (en) * | 1978-08-21 | 1980-03-19 | Coq B.V. | Metal clad three phase switchgear |
| DE3721575A1 (en) * | 1986-06-30 | 1988-01-14 | Sprecher Energie Ag | Voltage converter arrangement having isolating contacts |
| JP2002084610A (en) * | 2000-09-08 | 2002-03-22 | Toshiba Corp | Transformer for gas-insulated instrument |
| JP2003244809A (en) * | 2002-02-15 | 2003-08-29 | Mitsubishi Electric Corp | Gas-insulated switchgear |
-
2019
- 2019-05-20 CN CN201920725705.8U patent/CN209658073U/en active Active
-
2020
- 2020-04-17 EP EP20720413.2A patent/EP3956957A1/en active Pending
- 2020-04-17 WO PCT/EP2020/060837 patent/WO2020233916A1/en unknown
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0008817A1 (en) * | 1978-08-21 | 1980-03-19 | Coq B.V. | Metal clad three phase switchgear |
| DE3721575A1 (en) * | 1986-06-30 | 1988-01-14 | Sprecher Energie Ag | Voltage converter arrangement having isolating contacts |
| JP2002084610A (en) * | 2000-09-08 | 2002-03-22 | Toshiba Corp | Transformer for gas-insulated instrument |
| JP2003244809A (en) * | 2002-02-15 | 2003-08-29 | Mitsubishi Electric Corp | Gas-insulated switchgear |
Also Published As
| Publication number | Publication date |
|---|---|
| EP3956957A1 (en) | 2022-02-23 |
| CN209658073U (en) | 2019-11-19 |
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