WO2014069195A1 - ガス遮断器 - Google Patents
ガス遮断器 Download PDFInfo
- Publication number
- WO2014069195A1 WO2014069195A1 PCT/JP2013/077417 JP2013077417W WO2014069195A1 WO 2014069195 A1 WO2014069195 A1 WO 2014069195A1 JP 2013077417 W JP2013077417 W JP 2013077417W WO 2014069195 A1 WO2014069195 A1 WO 2014069195A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- circuit breaker
- gas circuit
- exhaust pipe
- exhaust
- gas
- Prior art date
Links
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/70—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid
- H01H33/76—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid wherein arc-extinguishing gas is evolved from stationary parts; Selection of material therefor
- H01H33/78—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid wherein arc-extinguishing gas is evolved from stationary parts; Selection of material therefor wherein the break is in gas
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/70—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid
- H01H33/88—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/70—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid
- H01H33/88—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts
- H01H33/90—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts this movement being effected by or in conjunction with the contact-operating mechanism
- H01H33/91—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts this movement being effected by or in conjunction with the contact-operating mechanism the arc-extinguishing fluid being air or gas
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/02—Details
- H01H2033/028—Details the cooperating contacts being both actuated simultaneously in opposite directions
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/70—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid
- H01H33/88—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts
- H01H2033/888—Deflection of hot gasses and arcing products
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/70—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid
- H01H33/72—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid having stationary parts for directing the flow of arc-extinguishing fluid, e.g. arc-extinguishing chamber
- H01H33/74—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid having stationary parts for directing the flow of arc-extinguishing fluid, e.g. arc-extinguishing chamber wherein the break is in gas
Definitions
- the present invention relates to a circuit breaker, and more particularly to a gas circuit breaker that blows an insulating gas when current is interrupted to extinguish an arc.
- Figure 2 shows the schematic structure of the gas circuit breaker.
- the gas circuit breaker is housed in an insulating tank 1 filled with an insulating gas.
- the fixed arc contact 3 on the electrode side and the movable arc contact 5 on the movable side are electrically connected, but when the opening command is transmitted in the event of an accident, the movable side is operated by the operating device via the insulating rod 10. Then, the state shifts to the state where the fixed arc contact 3 on the electrode side and the movable arc contact 5 on the movable side are physically separated.
- the hot gas generated at the time of gas spraying has a high density at a high temperature and a low dielectric strength.
- the role of the exhaust tube is to quickly discharge the generated hot gas without staying between the electrodes, and to efficiently cool the hot gas.
- a through hole is provided in the exhaust tube, and high-density low-temperature gas is drawn into the exhaust tube through the through hole using the pressure difference inside and outside the exhaust tube, and a spiral groove structure is provided on the inner peripheral surface of the exhaust tube.
- an insulating gas having a low density is prevented from coming into contact with the inner peripheral surface in the vicinity of the end portion of the exhaust tube to prevent a decrease in dielectric strength (Patent Document 1).
- Insulation performance improvement means such as electric field relaxation by expanding the gas tank diameter and hot gas cooling performance by expanding the exhaust stack may lead to a larger circuit breaker.
- measures for improving insulation performance by processing into an exhaust pipe may lead to an increase in the cost of manufacturing a circuit breaker depending on the type of processing.
- a gas circuit breaker includes a pair of arc contacts arranged in an insulating tank so as to be capable of opening and closing operations, and coaxially arranged on the outer periphery of the one arc contact.
- a puffer cylinder provided in the puffer cylinder, a puffer chamber composed of the puffer cylinder, a fixed piston, and a hollow rod, an insulating nozzle that forms a space communicating with the puffer chamber, and an arc generated in the insulating nozzle.
- a structure is formed with an exhaust tube provided on the outer periphery of the other arc contact, and the flow passage area is temporarily restricted to the inner peripheral surface before the exhaust tube end portion It is characterized by providing objects.
- the present invention arranges a structure that temporarily narrows the flow path in the exhaust cylinder that discharges the hot gas generated when the current is interrupted, thereby changing the gas flow rate to separate the gas from the inner wall of the exhaust cylinder, The hot gas with reduced is prevented from reaching the high electric field portion at the end of the exhaust tube. Further, since it is not necessary to perform complicated processing on the exhaust pipe, it can be configured at low cost.
- FIG. 6 is a cross-sectional view of an exhaust cylinder in which a through hole is added to the exhaust cylinder structure in Embodiment 3.
- FIG. It is the schematic at the time of applying this invention to the gas circuit breaker of a double drive system.
- Example 1 will be described with reference to FIGS. 1, 3, and 4.
- the circuit breaker is connected to the operating device via the insulating rod 10, and the entire circuit breaker is disposed in the insulating tank 1 filled with SF 6 insulating gas.
- the circuit breaker in this embodiment includes a fixed arc contact 3, a movable arc contact 5, a puffer cylinder 7, a puffer chamber 9 constituted by a puffer cylinder 7 and a fixed piston 6,
- the insulating nozzle 4 and the exhaust pipe 2 that exhausts and cools the hot gas discharged from the insulating nozzle 4 are schematically configured.
- the fixed arc contact 3 and the exhaust tube 2 disposed on the outer periphery thereof, the movable arc contact 5 that contacts the fixed arc contact 3 in the energized state (closed state), and the exhaust in the energized state (closed state).
- the puffer cylinder 7 is in contact with the cylinder 2, and the fixed arc contact 3 and the movable arc contact 5, and the exhaust cylinder 2 and the puffer cylinder 7 are electrically connected to each other.
- the puffer chamber 9 is coaxially disposed on the inner periphery of the puffer cylinder 7 and the puffer cylinder 7.
- the puffer chamber 9 has a hollow inside, and a hollow rod 8 into which the insulating gas flows into the hollow. And the fixed piston 6 that slides in the space formed between the hollow rods 8.
- the fixed piston 6 is fixed to a mounting seat provided on the inner peripheral surface of the insulating tank.
- the pressure generation in the puffer chamber of the insulating gas blown to the arc is performed by the puffer cylinder 7 moving relative to the fixed piston 6. More specifically, the insulating gas in the puffer chamber 9 is compressed by moving the driving force of the operating device transmitted from the insulating rod 10 connected to the operating device (not shown) to the puffer cylinder 7 through the hollow rod 8. .
- the high-pressure insulating gas compressed in the puffer chamber 9 is sprayed on the arc generated between the fixed arc contact 3 and the movable arc contact 5.
- Hot hot gas generated after being blown by the arc passes through the insulating nozzle 4, passes through the inside of the exhaust pipe 2, and is discharged from the fixed side end into the insulating tank 1 while being cooled.
- a structure 11 for temporarily restricting the gas flow passage area of the exhaust tube is installed inside the exhaust tube.
- the hot gas discharged as shown in FIG. 3 is discharged along the inner wall of the exhaust tube.
- the structure 11 when the structure 11 is arranged on the inner wall of the end portion of the exhaust cylinder, the flow passage cross-sectional area is reduced at the position of the structure 11, thereby causing a change in flow velocity and pressure, and the hot gas is supplied to the inner wall of the exhaust cylinder. And is exhausted out of the exhaust stack.
- the discharged hot gas is discharged into the tank without reaching the high electric field portion at the end of the exhaust tube.
- a structure that temporarily restricts the flow path is arranged on the inner peripheral surface of the exhaust pipe in front of the high electric field part at the end of the exhaust pipe, so that the circuit breaker can be grounded without increasing the size and complicated processing. The purpose of improving performance has been achieved.
- the structure 11 for reducing the flow passage area is disposed on the inner peripheral surface avoiding the high electric field portion in the vicinity of the end portion of the exhaust pipe, so that the hot gas is separated from the inner wall of the exhaust pipe by the change in flow velocity and pressure.
- the hot gas can be prevented from reaching the high electric field part.
- the hot gas temporarily peels from the inner wall of the exhaust pipe and then flows again along the inner wall of the exhaust pipe. Are exposed to a hot gas having a reduced dielectric strength.
- the structure 11 for reducing the flow passage area may be manufactured integrally with the exhaust tube, or a ring-shaped member that is later welded or screwed to a simple cylindrical exhaust tube shape.
- the structure may be fixed.
- SF 6 is used as the insulating gas, but the type of insulating gas is not limited to SF 6, and it goes without saying that other insulating gases such as dry air and nitrogen gas can be used.
- Example 2 will be described with reference to FIG.
- the same parts as those in the first embodiment are denoted by the same reference numerals and the description thereof is omitted.
- the structure 11 for restricting the flow path is arranged in the exhaust pipe described in the first embodiment, and in addition to the exhaust pipe shape for improving the insulation performance, the flow path is expanded again after the flow path is narrowed.
- a through hole 12 penetrating the inside and outside of the exhaust pipe is provided at a position.
- the flow path is narrowed by the structure 11 provided inside the exhaust tube, and the through hole 12 is provided at a position where the structure is enlarged again, thereby generating a larger pressure difference than the case where the structure 11 is not provided.
- Example 3 will be described with reference to FIGS.
- the same parts as those in the first and second embodiments are denoted by the same reference numerals and the description thereof is omitted.
- This embodiment is characterized in that the structure 11 for narrowing the flow path disposed in the exhaust pipe described in the first and second embodiments has a tapered shape for narrowing the flow path along the flow direction.
- the structure 11 is disposed inside the exhaust pipe, and the flow path is narrowed to change the speed and pressure of the hot gas, thereby preventing the arrival of the hot gas with reduced insulation performance at the end of the exhaust pipe. It is out.
- the gas cross-sectional area is reduced by narrowing the gas flow path, the flow path resistance increases and the gas exhaust performance is reduced. If the exhaust performance is reduced, the gas whose insulation performance is deteriorated is retained between the electrodes, which may cause the arc to re-ignite between the electrodes.
- the tapered structure shown in FIG. 6 is used to reduce the increase in gas flow path resistance, and the exhaust pipe gas is efficiently exhausted to prevent a decrease in insulation performance between the electrodes.
- the hot gas cooling function described in the second embodiment can be obtained by providing a through-hole between the exhaust pipe end and the structure.
- the fixed arc contact 3 is fixed, but the present invention is applied to a so-called dual drive circuit breaker in which the arc contact facing the movable arc contact 5 on the movable side is relatively movable. Is also possible.
- the tip of the insulating nozzle 4 is fixed to one end of the connecting rod 21, and the other end of the connecting rod 21 and one end of the connecting lever 22 are rotatably connected.
- the substantially center of the connecting lever 22 is fixed to the inner peripheral surface of the exhaust tube 2 so as to be rotatable by a support shaft 22A, and the other end of the connecting lever 22 and the terminal portion of the arc contact 3A are rotatably connected.
- the hot gas it is possible to cool the hot gas more effectively by using a metal material or a resin material having high thermal conductivity for the structure 11 of the present invention. Further, when the structure 11 is formed of a resin material, the structure is ablated by the hot gas. The hot gas can be cooled by the heat of vaporization at this time.
Landscapes
- Circuit Breakers (AREA)
Abstract
Description
2・・・排気筒
3・・・固定アーク接触子
3A・・・アーク接触子
4・・・絶縁ノズル
5・・・可動アーク接触子
6・・・固定ピストン
7・・・パッファシリンダ
8・・・中空ロッド
9・・・パッファ室
10・・・絶縁ロッド
11・・・構造物
12・・・貫通孔
13・・・低温ガス
21・・・連結ロッド
22・・・連結レバー
22A・・・支持軸
Claims (7)
- 絶縁タンク内に開極及び閉極動作を可能に対向配置した一対のアーク接触子と、
前記一方のアーク接触子の外周に同軸上に設けられたパッファシリンダと、
前記パッファシリンダと固定ピストンと中空ロッドによって構成されるパッファ室と、
前記パッファ室に連通する空間を形成する絶縁ノズルと、
前記絶縁ノズル内で生じたアークから排出された熱ガスを排気・冷却するために、前記他方のアーク接触子の外周に設けられた排気筒とでガス遮断器を構成し、
前記排気筒終端部手前の内周面に流路面積を一時的に絞る構造物を設けたことを特徴とするガス遮断器。 - 請求項1に記載のガス遮断器であって、前記構造物の形状がガス排気方向に向かって流路を絞るテーパ形状に構成されたことを特徴とするガス遮断器。
- 請求項1に記載のガス遮断器であって、前記構造物と前記排気筒終端部との間の再び流路面積が拡がる位置に、前記排気筒の内外を貫通する貫通孔を設けたことを特徴とするガス遮断器。
- 請求項2に記載のガス遮断器であって、前記構造物と前記排気筒終端部との間の再び流路面積が拡がる位置に、前記排気筒の内外を貫通する貫通孔を設けたことを特徴とするガス遮断器。
- 請求項1に記載のガス遮断器であって、前記構造物は取り外し可能に前記排気筒終端部手前の内周部に嵌め込まれたことを特徴とするガス遮断器。
- 請求項2に記載のガス遮断器であって、前記構造物は取り外し可能に前記排気筒終端部手前の内周部に嵌め込まれたことを特徴とするガス遮断器。
- 請求項3に記載のガス遮断器であって、前記構造物は取り外し可能に前記排気筒終端部手前の内周部に嵌め込まれたことを特徴とするガス遮断器。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020147034012A KR20150003396A (ko) | 2012-10-31 | 2013-10-09 | 가스 차단기 |
CN201380042828.7A CN104584171A (zh) | 2012-10-31 | 2013-10-09 | 气体断路器 |
US14/414,492 US9336974B2 (en) | 2012-10-31 | 2013-10-09 | Gas circuit breaker |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2012-239737 | 2012-10-31 | ||
JP2012239737A JP2014089899A (ja) | 2012-10-31 | 2012-10-31 | ガス遮断器 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2014069195A1 true WO2014069195A1 (ja) | 2014-05-08 |
Family
ID=50627109
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2013/077417 WO2014069195A1 (ja) | 2012-10-31 | 2013-10-09 | ガス遮断器 |
Country Status (5)
Country | Link |
---|---|
US (1) | US9336974B2 (ja) |
JP (1) | JP2014089899A (ja) |
KR (1) | KR20150003396A (ja) |
CN (1) | CN104584171A (ja) |
WO (1) | WO2014069195A1 (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2015198640A1 (ja) * | 2014-06-25 | 2015-12-30 | 株式会社日立製作所 | ガス遮断器 |
CN110706967A (zh) * | 2019-09-30 | 2020-01-17 | 沈阳工业大学 | 一种具有熄弧装置的快速接地开关 |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP6363038B2 (ja) * | 2015-03-05 | 2018-07-25 | 株式会社日立製作所 | ガス遮断器 |
JP6478836B2 (ja) | 2015-06-29 | 2019-03-06 | 株式会社東芝 | ガス遮断器 |
JP6426114B2 (ja) * | 2016-03-28 | 2018-11-21 | 株式会社日立製作所 | ガス遮断器 |
JP6667370B2 (ja) * | 2016-05-31 | 2020-03-18 | 株式会社日立製作所 | ガス遮断器 |
WO2018225255A1 (ja) * | 2017-06-09 | 2018-12-13 | 株式会社 東芝 | ガス遮断器 |
JP6794327B2 (ja) | 2017-09-15 | 2020-12-02 | 株式会社東芝 | ガス遮断器 |
CN107706038A (zh) * | 2017-12-06 | 2018-02-16 | 广东电网有限责任公司江门供电局 | 一种六氟化硫断路器的静触头座 |
JP6901425B2 (ja) * | 2018-03-13 | 2021-07-14 | 株式会社日立製作所 | ガス遮断器 |
CN115985713B (zh) * | 2023-02-20 | 2023-10-10 | 纳图智能科技(常州)有限公司 | 一种防护型真空断路器 |
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JPH08115642A (ja) * | 1994-10-18 | 1996-05-07 | Mitsubishi Electric Corp | 接地タンク形ガス遮断器 |
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JP3876357B2 (ja) * | 2002-01-09 | 2007-01-31 | 株式会社日立製作所 | ガス遮断器 |
JP4716788B2 (ja) * | 2005-06-01 | 2011-07-06 | 三菱電機株式会社 | ガス遮断器 |
FR2896083B1 (fr) * | 2006-01-06 | 2009-07-10 | Areva T & D Sa | Echappement de gaz pour disjoncteur |
JP2008210710A (ja) * | 2007-02-27 | 2008-09-11 | Mitsubishi Electric Corp | 電力用ガス遮断器 |
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WO2012077436A1 (ja) * | 2010-12-07 | 2012-06-14 | 三菱電機株式会社 | ガス遮断器 |
JP5516568B2 (ja) * | 2011-12-28 | 2014-06-11 | 株式会社日立製作所 | パッファ形ガス遮断器 |
-
2012
- 2012-10-31 JP JP2012239737A patent/JP2014089899A/ja active Pending
-
2013
- 2013-10-09 WO PCT/JP2013/077417 patent/WO2014069195A1/ja active Application Filing
- 2013-10-09 US US14/414,492 patent/US9336974B2/en active Active
- 2013-10-09 KR KR1020147034012A patent/KR20150003396A/ko not_active Application Discontinuation
- 2013-10-09 CN CN201380042828.7A patent/CN104584171A/zh active Pending
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JPH08115642A (ja) * | 1994-10-18 | 1996-05-07 | Mitsubishi Electric Corp | 接地タンク形ガス遮断器 |
JPH09231885A (ja) * | 1996-02-22 | 1997-09-05 | Hitachi Ltd | ガス遮断器 |
JPH09306308A (ja) * | 1996-05-09 | 1997-11-28 | Meidensha Corp | パッファ形ガス遮断器 |
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2015198640A1 (ja) * | 2014-06-25 | 2015-12-30 | 株式会社日立製作所 | ガス遮断器 |
JP2016009601A (ja) * | 2014-06-25 | 2016-01-18 | 株式会社日立製作所 | ガス遮断器 |
TWI582814B (zh) * | 2014-06-25 | 2017-05-11 | Hitachi Ltd | Gas breaker |
CN110706967A (zh) * | 2019-09-30 | 2020-01-17 | 沈阳工业大学 | 一种具有熄弧装置的快速接地开关 |
Also Published As
Publication number | Publication date |
---|---|
US9336974B2 (en) | 2016-05-10 |
KR20150003396A (ko) | 2015-01-08 |
CN104584171A (zh) | 2015-04-29 |
US20150170858A1 (en) | 2015-06-18 |
JP2014089899A (ja) | 2014-05-15 |
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