WO2012086216A1 - 開閉機器 - Google Patents
開閉機器 Download PDFInfo
- Publication number
- WO2012086216A1 WO2012086216A1 PCT/JP2011/051703 JP2011051703W WO2012086216A1 WO 2012086216 A1 WO2012086216 A1 WO 2012086216A1 JP 2011051703 W JP2011051703 W JP 2011051703W WO 2012086216 A1 WO2012086216 A1 WO 2012086216A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- shaft
- fixed
- vacuum valve
- elastic body
- movable
- Prior art date
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Classifications
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- 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
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
- H01H33/666—Operating arrangements
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/32—Driving mechanisms, i.e. for transmitting driving force to the contacts
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- 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
- H01H33/42—Driving mechanisms
- H01H2033/426—Details concerning the connection of the isolating driving rod to a metallic part
Definitions
- the present invention relates to a switchgear, and more particularly to a switchgear such as a power switch and a switchgear.
- chattering when a contact pair in an open state is turned on (closed) at a certain speed, bounce (hereinafter referred to as chattering) occurs between the contacts. Since a voltage is applied between the contacts, an arc is generated each time chattering occurs, and the contact surface is roughened or consumed, resulting in a disadvantage that contact resistance increases unnecessarily.
- chattering duration is long, there is a problem that the contacts are welded, so it is necessary to make this chattering duration as short as possible.
- the vacuum valve 1 houses a fixed contact 10 and a movable contact 11.
- the vacuum valve 1 is fixed to a fixed conductor 6, and the fixed conductor 6 is supported by a plurality of disc springs 63 stacked on each other.
- the disc spring 63 is an elastic body and is stacked by overlapping a plurality of disc springs.
- the movable contact 11 in the vacuum valve 1 is operated, and the disc spring 63 is slightly moved with respect to the bounce (chattering) generated when the movable contact 11 collides with the fixed contact 10, and a plurality of minute collisions are repeated and moved. Energy is consumed. In this way, chattering is suppressed.
- the height of the disc spring 63 is adjusted according to the switching device, and a predetermined buffering force is obtained by adjusting the tightening force of the fixing bolt 62. It is set to be obtained.
- the axis of the movable shaft 2 of the vacuum valve 1 fixed to the fixed conductor 6 is supported by a plurality of axes parallel to the axis. That is, support axis lines are provided on the outer side in the radial direction from the vacuum valve 1 in parallel with the axis of the movable shaft 2, and a plurality of sheets are stacked on the respective support axis lines between the insulating fixing base 61 and the fixed conductor 6.
- a disc spring 63 is arranged, and the load is adjusted and fixedly supported by the fixing bolt 62 so as to allow slight movement.
- the vacuum valve 1 can be stabilized by disposing and fixingly supporting a plurality of disc springs 63 stacked on a support axis parallel to the axis of the movable shaft 2 on the outer side in the radial direction from the vacuum valve 1.
- the disc springs 63 are stacked on a plurality of support axes, it takes a lot of work to adjust the load of the disc springs 63.
- the mechanical height adjustment of the disc spring 63 needs to be adjusted by actual measurement, and the adjustment work is difficult, and the disc springs 63 are stacked in two stages to further adjust the height. It will be difficult.
- the disc springs 63 stacked in two stages are arranged on a plurality of support axes, there is a problem that a plurality of times of work adjustment for load adjustment of the disc springs 63 are required, and a great deal of labor is required.
- the work of adjusting the load of the disc spring 63 needs to be performed in a state where the vacuum valve 1 which is a delicate part is fixed to the fixed conductor 6, and the load adjusting work needs to be performed with careful attention. is there.
- the disc spring 63 is supported on a plurality of support axes and allows minute movement, it is necessary to separately provide an operation failure prevention mechanism (not shown) due to a shift in the center of the axis, which increases the cost. .
- the fixed conductor 6 becomes thicker, and both sides of the fixed conductor 6 have a structure that protrudes greatly outward in the radial direction from the vacuum valve 1, resulting in an increase in cost. . Furthermore, since both sides of the fixed conductor 6 protrude greatly outward in the radial direction from the vacuum valve 1, the distance to the ground is increased in order to ensure the withstand voltage performance in the radial direction, and the entire switching device is increased. There is a problem that the cost will increase with the increase in cost.
- the present invention has been made to solve the above-described problems, and an object of the present invention is to provide an opening / closing device that can be reduced in size and cost.
- the switchgear according to the present invention includes a fixed-side electrode fixed to a fixed energizing shaft and a movable-side electrode fixed to a movable energizing shaft opposed to the fixed-side electrode and coaxially disposed with the fixed energizing shaft. And a buffer mechanism that is arranged coaxially with the fixed energizing shaft on the fixed side of the vacuum valve and attenuates a collision load when the movable side electrode is closed to the fixed side electrode It is equipped with.
- the switchgear according to the present invention it is possible to obtain a switchgear that can be downsized and cost-effective.
- FIG. 1 is a cross-sectional view showing a switchgear according to Embodiment 1 of the present invention.
- FIG. 2 is a sectional view showing a buffer mechanism in the switchgear according to Embodiment 1 of the present invention.
- Reference numeral 101 denotes a vacuum valve
- 102 denotes a fixed-side electrode that is disposed in the vacuum valve 101 and is fixed to the fixed energizing shaft 103, and is electrically connected to the fixed conductor 104 and the fixed-side terminal conductor 105 through the fixed energizing shaft 103.
- Reference numeral 106 denotes a movable side electrode that is disposed in the vacuum valve 101, is opposed to the fixed side electrode 102, is fixed to a movable energization shaft 107 that is disposed coaxially with the fixed energization shaft 103.
- Reference numeral 108 denotes a movable side terminal conductor
- reference numeral 109 denotes a shunt conductor that electrically connects the movable energizing shaft 107 extending outside the vacuum valve 101 and the movable side terminal conductor 108, and has flexibility.
- the fixed conductor 104 and the fixed-side terminal conductor 105 may be an integral structure.
- Reference numeral 110 denotes an operating rod connected to an operating mechanism (not shown).
- the operating rod 110 is connected to the movable energizing shaft 107, and the movable energizing shaft 107 is driven in the axial direction so that the movable electrode 106 is fixed.
- the electrode 102 is brought into contact with a closed state, and the movable side electrode 106 is separated from the fixed side electrode 2 to be in an open state.
- An insulating rod 111 is provided between the operating rod 110 and the movable energizing shaft 107, and the operating rod 110 and the movable energizing shaft 107 are insulated from each other and electrically insulated from each other by the insulating rod 111.
- 112 is a buffer mechanism that is disposed coaxially with the fixed energizing shaft 103 on the fixed side of the vacuum valve 101 and attenuates a collision load when the movable side electrode 106 is brought into contact with the fixed side electrode 102 and closed.
- the buffer mechanism 112 includes, for example, a shaft portion 113a arranged coaxially with the fixed energization shaft 103, and a base portion 113b and a shaft portion attached to one side of the shaft portion 113a on the fixed conductor 104 which is the fixed side of the vacuum valve 101.
- a base shaft 113 having a threaded portion 113c on the other side of 113a, a shaft support 114 inserted into the shaft portion 113a of the base shaft 113, and a shaft portion between the shaft support 114 and the base 113b of the base shaft 113
- the elastic body 115 is inserted concentrically with the 113a, and the adjustment member 116 is screwed into the threaded portion 113c of the base shaft 113 and adjusts the load of the elastic body 115.
- the shaft support 114 is provided with a minute gap so that the shaft portion 113a of the base shaft 113 can be slightly moved in the axial direction, and the movement in the radial direction is fixed by the shaft support 114 supported by the support member 117. ing.
- the elastic body 115 shows a case where it is constituted by a disc spring
- the adjustment member 116 shows a case where it is constituted by, for example, a first nut 116a and a second nut 116b, and is adjusted by tightening the first nut 116a.
- the load of the disc spring, which is the elastic body 115, is adjusted, and the adjusted load state is maintained by the second nut 116b.
- the manufacturing process of the buffer mechanism 112 is manufactured separately from the manufacturing process of the vacuum valve 101, the load adjustment is performed by the buffer mechanism 112 alone, and the buffer mechanism 112 in a state where the load adjustment is completed is attached to the vacuum valve 101.
- the fixed conductor 104 on the fixed side is disposed coaxially with the fixed energizing shaft 103.
- the movable electrode 106 When the movable electrode 106 comes into contact with the fixed electrode 102 with a predetermined load, that is, when the movable electrode 106 collides with the fixed electrode 102, the movable electrode 106 chatters with the fixed electrode 102. Can suppress chattering in a stable state by the buffer mechanism 112 disposed coaxially with the movable energizing shaft 107 and the fixed energizing shaft 103.
- chattering is suppressed on one support axis by the buffer mechanism 112 arranged coaxially with the movable energizing shaft 107 and the fixed energizing shaft 103, and the movable electrode 106
- the load at the time of collision with the fixed side electrode 102 is transmitted to the fixed energizing shaft 103 and the fixed conductor 104.
- the load transmitted to the fixed conductor 104 is transmitted to the base 113b of the base shaft 113 serving as the buffer mechanism 112, and the disc spring serving as the elastic body 115 is compressed by the base 113b of the base shaft 113 so that the movable electrode 106 collides with the fixed electrode 102.
- the chattering is suppressed in a stable state by absorbing and attenuating the load.
- the structure is not a structure in which the disc springs 63 are stacked on the plurality of support axes on the radially outer side of the vacuum valve 1 as in the above-described conventional switching device.
- the buffer mechanism 112 is disposed coaxially with the movable energizing shaft 107 and the fixed energizing shaft 103, so that the radial dimension of the vacuum valve 101 can be significantly reduced as compared with the conventional opening / closing device described above. Therefore, the withstand voltage performance in the radial direction can be improved, and the entire switching device can be reduced. Therefore, the size can be reduced and the cost can be reduced.
- both sides of the fixed conductor 6 have a structure that protrudes greatly outward in the radial direction from the vacuum valve 1, and thus it has been necessary to increase the thickness. Since the buffer mechanism 112 is disposed coaxially with the movable energizing shaft 107 and the fixed energizing shaft 103, the influence of the deformation of the fixed conductor 104 is extremely small, and the fixed conductor 104 can be downsized.
- the buffer mechanism 112 is a load adjustment of a disc spring which is an elastic body 115 on one support axis disposed coaxially with the movable energizing shaft 107 and the fixed energizing shaft 103, and the load adjustment may be performed only once.
- the number of work steps can be reduced and the cost can be further reduced as compared with the load adjustment of the disc spring 63 on a plurality of support axes.
- the buffer mechanism 112 is on one support axis disposed coaxially with the movable energizing shaft 107 and the fixed energizing shaft 103.
- the shock absorbing mechanism 112 operates with interference on a plurality of support axes. There are no problems, and a stable chattering suppression effect can be obtained.
- the buffer mechanism 112 in the first embodiment is manufactured separately from the manufacturing process of the vacuum valve 101, the load adjustment is performed by the buffer mechanism 112 alone, and the buffer is a completed product in a state where the load adjustment is completed. Since the mechanism 112 can be disposed coaxially with the fixed energizing shaft 103 on the fixed conductor 104 on the fixed side of the vacuum valve 101, the vacuum valve 1 which is a delicate component can be provided as in the conventional switchgear described above. There is no need to carefully adjust the load of the disc spring 63 while it is fixed to the fixed conductor 6, the number of work steps such as protection of the vacuum valve 101 can be reduced, and the assembly of the switching device can be remarkably improved. Cost reduction can be achieved.
- the buffer mechanism 112 can adjust the load of the disc spring which is the elastic body 115 alone, the cost can be further reduced when the switchgear is mass-produced.
- FIG. 3 is a sectional view showing a switchgear according to Embodiment 2 of the present invention.
- the elastic body 115 configured by a disc spring
- the elastic body 118 is configured by a rubber material.
- the figure shows an elastic body 118 composed of an O-ring as an example.
- the load is adjusted by the compression state of the O-ring which is the elastic body 118, and the same effects as those of the first embodiment described above can be obtained.
- a compressed state maintaining member 119 for maintaining the compressed state of the O-ring in a predetermined state is disposed on the inner peripheral side of the O-ring that is the elastic body 118.
- the compressed state maintaining member 119 is formed of, for example, an annular member that is harder than the material of the O-ring that is the elastic body 118, so that the O-ring that is the elastic body 118 is not compressed beyond the position of the compressed state maintaining member 119.
- FIG. 3 A third embodiment of the present invention will be described with reference to FIGS. 4 and 5.
- FIG. 4 is a cross-sectional view showing a switchgear according to Embodiment 3 of the present invention.
- FIG. 5 is a view of the switchgear according to Embodiment 3 of the present invention as seen from the direction of arrow AA in FIG.
- Embodiment 2 the case of the elastic body 118 made of a rubber material and made of an O-ring has been described. However, when there is a state where the load of the elastic body 118 cannot be adjusted within the compression range of the O-ring. It is necessary to remove the shaft portion 113a of the base shaft 113 of the buffer mechanism 112 from the shaft support 114 and replace the elastic body 118 formed of an O-ring.
- the elastic body 120 made of a rubber material is divided and arranged symmetrically is shown.
- the buffer mechanism 112 when there is a state in which the load adjustment of the elastic body 120 cannot be performed within the compression range of the elastic body 120 formed of the rubber material divided and arranged in an axial symmetry, the buffer mechanism 112 Without removing the shaft portion 113a of the base shaft 113 from the shaft support 114, it is only necessary to replace the elastic body 120 made of a rubber material by attaching and detaching the elastic body 120 made of a rubber material. Workability is improved as compared with the second embodiment.
- a compression state maintaining member 121 that maintains the compression state of the rubber material that is the elastic body 120 in a predetermined state is axially symmetric on the inner peripheral side of the elastic body 120 that is configured by a rubber material that is divided and arranged in an axial symmetry. It is divided and arranged.
- the compressed state maintaining member 121 is made of, for example, a member harder than the rubber material that is the elastic body 120 so that the rubber material that is the elastic body 120 is not compressed beyond the position of the compressed state maintaining member 121.
- the elastic body 120 and the compression state maintenance member 121 showed the case where it was formed in the quadrangular prism shape, it is not limited to this shape, For example, a polygonal column shape, a cylindrical shape, etc. may be sufficient, The same effect is produced.
- FIG. Embodiment 4 of the present invention will be described with reference to FIG. 6.
- FIG. 6 is a sectional view showing a switchgear according to Embodiment 4 of the present invention.
- Embodiment 4 it is arranged on the movable side of the vacuum valve 101 so as to enable the movement of the vacuum valve 101 in the axial direction and to suppress the movement of the vacuum valve 101 in the radial direction.
- the case where the suppression member 122 is provided is shown.
- the suppressing member 122 is provided with a through hole 122b through which the shunt conductor 109 and the movable terminal conductor 108 are inserted.
- the restraining part 122a of the restraining member 122 and the outer peripheral part on the movable side of the vacuum valve 101 are opposed to each other via a slight gap so that the vacuum valve 101 can be moved minutely in the axial direction.
- the vacuum valve 101 is restrained from moving outward in the radial direction by the restraining portion 122 a of the restraining member 122.
- the chattering suppression effect can be improved. it can.
- FIG. Embodiment 5 of the present invention will be described with reference to FIG. 7.
- FIG. 7 is a sectional view showing a switchgear according to Embodiment 5 of the present invention.
- a conductive bearing 123 made of a good conductor that supports the movable energizing shaft 107 so as to be movable in the axial direction and fixes movement in the radial direction, and a slide contact 124 that supports the conductive bearing 123 are provided.
- the case where it provided is shown. That is, it is a state in which the shunt conductor 109 and the movable terminal conductor 108 are replaced, and has the same function.
- the movable energizing shaft 107 is supported by the conductive bearing 123 so as to be movable in the axial direction, the movable energizing shaft 107 is operated in the same manner as in the above-described embodiments. Further, the conductive bearing 123 and the slide contact 124 suppress the movement of the movable energizing shaft 107 in the radial direction of the vacuum valve 101, and the chattering suppressing effect can be improved even if the configuration is movable in the axial direction. Can do.
- the present invention is suitable for realizing an opening / closing device that can be reduced in size and reduced in cost.
Landscapes
- High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
Description
以下、この発明の実施の形態1を図1および図2に基づいて説明するが、各図において、同一、または相当部材、部位については同一符号を付して説明する。図1はこの発明の実施の形態1に係わる開閉機器を示す断面図である。図2はこの発明の実施の形態1に係わる開閉機器における緩衝機構を示す断面図である。
この発明の実施の形態2を図3に基づいて説明するが、図において、同一、または相当部材、部位については同一符号を付して説明する。図3はこの発明の実施の形態2に係わる開閉機器を示す断面図である。
この発明の実施の形態3を図4および図5に基づいて説明するが、各図において、同一、または相当部材、部位については同一符号を付して説明する。図4はこの発明の実施の形態3に係わる開閉機器を示す断面図である。図5はこの発明の実施の形態3に係わる開閉機器を示す図4の矢印A-A方向から見た図である。
この発明の実施の形態4を図6に基づいて説明するが、図において、同一、または相当部材、部位については同一符号を付して説明する。図6はこの発明の実施の形態4に係わる開閉機器を示す断面図である。
この発明の実施の形態5を図7に基づいて説明するが、図において、同一、または相当部材、部位については同一符号を付して説明する。図7はこの発明の実施の形態5に係わる開閉機器を示す断面図である。
Claims (9)
- 固定通電軸に固着された固定側電極と前記固定側電極と相対して対向し前記固定通電軸と同軸上に配置された可動通電軸に固着された可動側電極とを収納する真空バルブと、前記真空バルブの固定側に前記固定通電軸と同軸上に配設され、前記可動側電極が前記固定側電極に閉極されたときの衝突荷重を減衰する緩衝機構とを備えたことを特徴とする開閉機器。
- 前記緩衝機構は、前記固定通電軸と同軸上に配置される軸部と前記軸部の一方側に前記真空バルブの固定側に取り付けられる基部と前記軸部の他方側にねじ部とを有する基軸と、前記基軸に挿着された軸支持体と、前記軸支持体と前記基軸の基部との間に前記軸部と同心状に挿着された弾性体と、前記基軸のねじ部に螺入され前記弾性体の荷重調整を行う調整部材とから構成されたことを特徴とする請求項1に記載の開閉機器。
- 前記弾性体は、皿ばねで構成されたことを特徴とする請求項2に記載の開閉機器。
- 前記弾性体は、ゴム材で構成されたことを特徴とする請求項2に記載の開閉機器。
- 前記弾性体の前記ゴム材は、Oリングで構成されたことを特徴とする請求項4に記載の開閉機器。
- 前記弾性体の前記ゴム材は、軸対称に分割されて同心状に配置されたことを特徴とする請求項4に記載の開閉機器。
- 前記弾性体は、ゴム材で構成されるとともに前記ゴム材の圧縮状態を維持する圧縮状態維持部材を設けたことを特徴とする請求項2に記載の開閉機器。
- 前記真空バルブの可動側に、前記真空バルブの軸方向の移動を可能とするように配置されるとともに前記真空バルブの半径方向の移動を抑制するように配置された抑制部材を設けたことを特徴とする請求項1ないし請求項7のいずれか1項に記載の開閉機器。
- 前記可動通電軸を軸方向に移動可能に支持するとともに半径方向への移動を固定する良導体からなる導電軸受と、前記導電軸受を支持するスライドコンタクトとを設けたことを特徴とする請求項1ないし請求項7のいずれか1項に記載の開閉機器。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
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DE112011104445.3T DE112011104445B4 (de) | 2010-12-20 | 2011-01-28 | Schaltvorrichtung |
CN201180047486.9A CN103140908B (zh) | 2010-12-20 | 2011-01-28 | 开关设备 |
JP2012533409A JP5116905B2 (ja) | 2010-12-20 | 2011-01-28 | 開閉機器 |
US13/821,616 US8941022B2 (en) | 2010-12-20 | 2011-01-28 | Switching apparatus |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP2010282923 | 2010-12-20 | ||
JP2010-282923 | 2010-12-20 |
Publications (1)
Publication Number | Publication Date |
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WO2012086216A1 true WO2012086216A1 (ja) | 2012-06-28 |
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ID=46313506
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/JP2011/051703 WO2012086216A1 (ja) | 2010-12-20 | 2011-01-28 | 開閉機器 |
Country Status (5)
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US (1) | US8941022B2 (ja) |
JP (1) | JP5116905B2 (ja) |
CN (1) | CN103140908B (ja) |
DE (1) | DE112011104445B4 (ja) |
WO (1) | WO2012086216A1 (ja) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9030280B2 (en) * | 2011-09-19 | 2015-05-12 | Mitsubishi Electric Corporation | Electromagnetically operated device and switching device including the same |
CN107275147A (zh) * | 2017-07-31 | 2017-10-20 | 安徽天电气技术股份有限公司 | 断路器防弹跳装置 |
DE102020202952A1 (de) | 2020-03-09 | 2021-09-09 | Siemens Aktiengesellschaft | Leistungsschalter und Verfahren zum Schalten eines Leistungsschalters |
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2011
- 2011-01-28 CN CN201180047486.9A patent/CN103140908B/zh active Active
- 2011-01-28 JP JP2012533409A patent/JP5116905B2/ja active Active
- 2011-01-28 WO PCT/JP2011/051703 patent/WO2012086216A1/ja active Application Filing
- 2011-01-28 DE DE112011104445.3T patent/DE112011104445B4/de active Active
- 2011-01-28 US US13/821,616 patent/US8941022B2/en active Active
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JPS5649030U (ja) * | 1979-09-21 | 1981-05-01 | ||
JPS56148840U (ja) * | 1980-04-08 | 1981-11-09 | ||
JPS5841952U (ja) * | 1981-09-16 | 1983-03-19 | 株式会社明電舎 | 碍子形真空しや断器 |
JPS58178246U (ja) * | 1982-05-25 | 1983-11-29 | 株式会社東芝 | ガス絶縁開閉器の緩衝装置 |
JPS62120237U (ja) * | 1986-01-23 | 1987-07-30 | ||
JPH05190063A (ja) * | 1992-01-17 | 1993-07-30 | Toshiba Corp | 真空遮断器 |
EP0704872A1 (fr) * | 1994-09-29 | 1996-04-03 | Schneider Electric Sa | Interrupteur ou disjonteur moyenne tension |
JPH09147701A (ja) * | 1995-11-22 | 1997-06-06 | Mitsubishi Electric Corp | 真空開閉装置 |
JP2004355937A (ja) * | 2003-05-29 | 2004-12-16 | Fuji Electric Fa Components & Systems Co Ltd | 真空遮断器の遮断装置 |
Also Published As
Publication number | Publication date |
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JPWO2012086216A1 (ja) | 2014-05-22 |
US20130161291A1 (en) | 2013-06-27 |
CN103140908B (zh) | 2015-11-25 |
CN103140908A (zh) | 2013-06-05 |
DE112011104445B4 (de) | 2018-10-25 |
DE112011104445T5 (de) | 2013-09-19 |
US8941022B2 (en) | 2015-01-27 |
JP5116905B2 (ja) | 2013-01-09 |
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