CN1941245A - Multi circuit selecting switchgear - Google Patents
Multi circuit selecting switchgear Download PDFInfo
- Publication number
- CN1941245A CN1941245A CNA2006101599398A CN200610159939A CN1941245A CN 1941245 A CN1941245 A CN 1941245A CN A2006101599398 A CNA2006101599398 A CN A2006101599398A CN 200610159939 A CN200610159939 A CN 200610159939A CN 1941245 A CN1941245 A CN 1941245A
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- Prior art keywords
- mentioned
- vacuum valve
- solid insulator
- conductor
- fixed
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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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
- H01H33/662—Housings or protective screens
- H01H33/66207—Specific housing details, e.g. sealing, soldering or brazing
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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
-
- 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
- H01H2033/6665—Details concerning the mounting or supporting of the individual vacuum bottles
-
- 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
- H01H33/6661—Combination with other type of switch, e.g. for load break switches
Landscapes
- High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
- Gas-Insulated Switchgears (AREA)
Abstract
A multi circuit selecting switchgear having a vacuum interrupter (2) formed by sealing with a shield end plate (4,5) either open end of an insulated cylinder (3), a fixed contact (6) placed inside the vacuum interrupter and connected to a fixed holder (7) penetrating the shield end plate at one open end, a moving contact (8) placed inside the vacuum interrupter and connected to a moving holder (9) penetrating the shield end plate at the other open end and facing the fixed contact, arc shields (10) placed surrounding the fixed contact and the moving contact inside the vacuum interrupter and an earthed outer case (16) sealed to capsulate the vacuum interrupter through the moving side and filled with insulating gas therein, characterized in that a part of the outside of the vacuum chamber is covered with a solid insulator molding from a fixed side to a moving side, and the earthed outer case is fixed on the solid insulator.
Description
Technical field
The present invention relates to use the multi circuit selecting switchgear of conversion to the vacuum valve of the power-supply system of electric.
Background technology
Usually, in distribution system, multi circuit selecting switchgear is used in the electric power system of electric in order to change.As this multi circuit selecting switchgear is known the gas-insulating type multi circuit selecting switchgear arranged.But gas-insulating type needs maintenance because of the insulating gas deterioration, very trouble; In addition, insulating gas is also poorer than the proof voltage of solid insulator, and distance must be done greatlyyer than solid insulation formula between each phase of three-phase conductor.Especially be that two loops, load system are that a multiloop the loop is three when above as electric power system, be difficult to miniaturization.
Therefore, use vacuum valve to constitute multi circuit selecting switchgear.The structure of vacuum valve is: thus constitute vacuum tank with the openend that shields end plate sealed insulation tube respectively, in vacuum tank, dispose fixed electrode and movable electrode relatively, the fixed electrode connection is arranged on the fixed conductor that runs through a shielding end plate, and but the movable electrode connection is arranged on the moving-conductor that runs through another shielding end plate, disposes the electric arc shield in the mode of surrounding two electrodes.
In addition, the outside at vacuum tank, but movable side bus is connected on the moving-conductor, die forming is carried out in the outside of vacuum tank, thereby cover axial whole zone from fixation side one end (fixed conductor side) to movable side one end (but moving-conductor side) with solid insulator.The ground connection outer container is inserted together with movable side bus after the embedding by the solid insulator sealing and fixing from the movable side of vacuum tank, and insulating gas is sealing in the ground connection outer container.
In the past, when with solid insulator vacuum tank being carried out die forming and insulating, die forming is carried out in the outside of vacuum tank, thereby cover axial whole zone from fixation side one end to movable side one end with solid insulator.This scheme for example is documented in, in the patent documentation 1-TOHKEMY 2002-15645 communique.
In the prior art, owing to be that die forming is carried out in the outside of vacuum tank, thereby with the axial whole zone of solid insulator covering from fixation side one end to movable side one end, so when movable electrode is switched to fixed electrode, the end face of the solid insulator between vacuum tank and ground connection outer container along having applied the sizable electric field of power-supply system voltage on the face direction.So, must strengthen the thickness of solid insulator, have the problem that the multi circuit selecting switchgear volume is big, cost is high.
Summary of the invention
The object of the present invention is to provide a kind of can reducing that vacuum tank is carried out the electric field that applies of solid insulator of die forming and insulation and can realize the multi circuit selecting switchgear of miniaturization.
The invention is characterized in, vacuum tank is carried out die forming and insulation, thereby cover the part of insulating cylinder from fixation side vertically with solid insulator; The structure of this vacuum tank is respectively with the openend that shields end plate sealed insulation tube.
In other words, the present invention utilizes solid insulator to cover the position of insulating cylinder vertically, and the static capacity between its contact electrode (fixed electrode or movable electrode) and the electric arc shield is littler than the static capacity between electric arc shield and the ground connection outer container.
Have again, in this manual, fixed electrode (fixed conductor) side of vacuum tank (vacuum valve) is called fixation side, movable electrode (but moving-conductor) side is called movable side.
The present invention is owing to carry out die forming and insulation in the mode of the part that covers insulating cylinder, thereby make the static capacity between electric arc shield and the ground connection outer container bigger with the static capacity of electric arc shield, share so can reduce the voltage of electric arc shield and ground connection outer container than contact electrode.Therefore, owing to can reduce the electric field that applies along the face direction to solid insulator, thus can make the thickness attenuation of solid insulator, and can be with the multi circuit selecting switchgear miniaturization.
Description of drawings
Fig. 1 is the longitudinal section of facing of the expression embodiment of the invention 1.
Fig. 2 is the cutaway view along the A-A line of Fig. 1.
Fig. 3 is the vertical view of Fig. 2.
Fig. 4 is the amplification view of the pith of embodiment 1.
Fig. 5 is the single-phase single line diagram of the embodiment of the invention 1.
Fig. 6 is used to illustrate equipotential surface distribution map of the present invention.
Fig. 7 is used to illustrate equipotential surface distribution map of the present invention.
Fig. 8 is used to illustrate equipotential surface distribution map of the present invention.
Fig. 9 is used to illustrate performance plot of the present invention.
Figure 10 is the structure chart of the expression embodiment of the invention 2.
Figure 11 is the longitudinal section of facing of the expression embodiment of the invention 3.
Figure 12 is the cutaway view along the B-B line of Figure 11.
Figure 13 is the vertical view of Figure 12.
Figure 14 is the single-phase single line diagram of the embodiment of the invention 3.
Figure 15 is the longitudinal section of facing of the expression embodiment of the invention 4.
Figure 16 is the vertical view of Figure 15.
Embodiment
Vacuum tank constitutes with the openend of shielding end plate sealed insulation tube respectively.Fixed electrode connects and to be arranged on the fixed conductor that runs through a shielding end plate, but movable electrode connects and is arranged on the moving-conductor that runs through another shielding end plate, and dispose relative with fixed electrode.In vacuum tank, dispose the electric arc shield in the mode of surrounding contact electrode (fixed electrode and movable electrode).But movable side bus is connected with moving-conductor in the outside of vacuum tank.Solid insulator is carried out die forming and insulation, to cover the part of insulating cylinder vertically from the fixedly side of vacuum tank.The ground connection outer container from movable side embed and cover on the top of vacuum tank and sealing and fixing on solid insulator, enclose insulating gas in the ground connection outer container.Cover the position of insulating cylinder vertically by solid insulator, the static capacity between its contact electrode and the electric arc shield is littler than the static capacity between electric arc shield and the ground connection outer container.
Fig. 1～Fig. 4 represents one embodiment of the present of invention.Fig. 1 faces longitudinal section, and Fig. 2 is the cutaway view along the A-A line of Fig. 1, and Fig. 3 is the vertical view of Fig. 2, and Fig. 4 is the amplification view of expression pith.In addition, Fig. 1～embodiment shown in Figure 4 is illustrated in three loops, is respectively equipped with the example of the vacuum valve that earthed switch uses, and diagram has been omitted the framework of holding multi circuit selecting switchgear of the present invention.In addition, the thick chain-dotted line of the usefulness represented of Fig. 4 scope of surrounding is used to illustrate effect of the present invention described later.
In Fig. 1～Fig. 4, be provided with three vacuum valve 1a, 1b, 1c in mutually at each.The vacuum tank 2 that constitutes vacuum valve 1 constitutes with the openend of shielding end plate 4,5 sealed insulation tubes 3 respectively.The fixed electrode (fixed contact) 6 that constitutes vacuum valve 1 connects on the front end of the fixed conductor 7 that is arranged on a shielding end plate 5 that runs through the diagram downside.But moving-conductor 9 is arranged on and runs through another shielding end plate 4 and be positioned on the top and the axis identical with fixed conductor 7 of fixed conductor 7.But connect at the front end of the moving-conductor 9 relative and to be provided with and to be fixed with movable electrode (travelling contact) 8 with fixed electrode 6.Movable electrode 8 and fixed electrode 6 relative configurations.
It is surrounded the contact electrode of fixed electrode 6 and movable electrode 8 by electric arc shield 10 on every side.Movable electrode 9 is outstanding from vacuum tank 2, and is connected with operator 12 by action bars 11.Operator 12 is connected in the driving mechanism portion (not shown) that movable electrode 8 is contacted with fixed electrode 6 or separate.
But for keeping the relative vacuum of the vacuum tank that moves up and down 2 of moving-conductor 9 to be provided with the bellows 13 of stainless steel.But on moving-conductor 9, be connected with movable side bus 14 in vacuum tank 2 outsides.Movable side bus 14 possesses sliding contact, but is electrically connected with moving-conductor 9 by sliding contact.As shown in Figure 1, but movable side bus 14 and same three vacuum valve 1a, 1b, each moving-conductor 9 connection of 1c mutually.
For covering, carry out die forming and insulate with solid insulator 15 from the fixation side of vacuum tank 2 part of the insulating cylinder of (vertical direction) vertically.At the 15a place, position (upper end position) that covers insulating cylinder 3 with solid insulator 15 vertically, the static capacity between fixed electrode 6 or movable electrode 8 and the electric arc shield 10 is littler than the static capacity between electric arc shield 10 and the ground connection outer container 16.Fig. 1, Fig. 2, Fig. 4 are near the examples the lower end of the expression vertical direction that the upper end 15a of solid insulator 15 is arranged on electric arc shield 10.
The ground connection outer container 16 that is covered with the top from the movable side of vacuum tank 2 embed and together with movable side bus 14 with on three vacuum valve 1a, 1b, the 1c cover, with the peristome sealing and fixing of downside on solid insulator 15.In ground connection outer container 16, enclose insulating gas.Three vacuum valve 1a, 1b, 1c being supported by solid insulator 15 are contained in the ground connection outer container 16 that is filled with insulating gas.But the action bars 11 of vacuum valve 1a, 1b, 1c is connected with moving-conductor 9 in ground connection outer container 16, and runs through ground connection outer container 16 and make device 12 with groove and be connected.
The switch element 26 (26U, 26V, 26W) that constitutes by the vacuum valve 1a～1c of each phase (U, V, W) and ground connection outer container 16 etc. as shown in Figure 2, three-phase disposes side by side.The taper that diminishes along with downward diameter is formed at the bottom of solid insulator 15, and is connected with cable straight joint 17.Fixed conductor 7 is connected with fixation side bus 24, and is connected on the cable 18 by cable straight joint 17.Around fixed insulation body 15, form ground plane 19.
As Fig. 2, shown in Figure 4, on vacuum valve 1, be provided with the vacuum valve 20 that earthed switch is used side by side.Vacuum valve 20 is identical with vacuum valve 1, is kept by solid insulator 15.The fixation side of vacuum valve 20 utilizes bonding conductor 21 to be connected with the fixed conductor 7 of vacuum valve 1, and its movable side is made bar 22 by groove and is connected with operator 23.
So the action of the multi circuit selecting switchgear that constitutes is well-known, describes in detail though omit it, and single-phase single line diagram as shown in Figure 5.For example, load system L is connected on the fixation side of vacuum valve 1c, and in addition, the fixation side of vacuum valve 1a, 1b connects different power-supply system A, B.Drive vacuum valve 1 (1a, 1b, 1c) by operator 12 (12a, 12b, 12c).Vacuum valve 1 (1a, 1b, 1c) utilizes its subscript (a, b, c) identical operations device 12 (12a, 12b, 12c) to drive.
For load system L is powered, then to connect the vacuum valve 1c of each phase (U, V, W), and connect vacuum valve 1a.From the power-supply system A of the fixation side that is connected vacuum valve 1a the load system L of the fixation side that is connected vacuum valve 1c is powered.In addition,, disconnect the vacuum valve 1a of each phase (U, V, W), connect vacuum valve 1b when power-supply system B powers to load system L.Carrying out multiloop selection like this switches.Have, the switch inspection of vacuum valve 1 is undertaken by connecting vacuum valve 20 again.The driving of vacuum valve 20 is undertaken by operator 23 (23a, 23b, 23c).
So, in the present invention, the mode that covers the part of insulating cylinder 3 with the fixation side from the vacuum tank 2 that constitutes vacuum valve 1 vertically utilizes solid insulator 15 to carry out die forming and insulation.Fig. 6～Fig. 8 is illustrated in and makes vacuum valve 1 be in on-state, but the result that the equipotential surface when power-supply system voltage being added on fixed conductor 7 and the moving-conductor 9 distributes and carries out sunykatuib analysis.
To equipotential surface analysis is the scope of surrounding with thick chain-dotted line in Fig. 4, with the position (highly) of the fixation side of solid insulator 15 die forming vacuum valves 1 as parameter.With contact electrode (fixed electrode 6 with movable electrode 8) just the current potential of fixed conductor 7 (but moving-conductor 9) be made as 100%, the current potential of ground connection outer container 16 is made as 0%, the current potential of electric arc shield 10 calculates as floating potential.
Fig. 6 represents that the equipotential surface of solid insulator 15 die formings when the position (highly) of the shielding end plate 5 that comprises vacuum tank 2 and the part of insulating cylinder 3 distributes.Equipotential surface distribute be shown as when the dispersion of distribution hour electric field then big.Have again,, represented to be used for comparative structure with analysis result and with the structure of the chain-dotted line encirclement of Fig. 4 in the diagram of Fig. 6 left side.
In this case, owing between electric arc shield 10 and ground connection outer container 16, solid insulator 15 is made the shape that part is got into, the static capacity between electric arc shield 10 and the ground connection outer container 116 increases.Just the static capacity between fixed conductor 7 (but moving-conductor 9) and the electric arc shield 10 and the static capacity between electric arc shield 10 and the ground connection outer container 16 are inverse ratio to the current potential of electric arc shield 10 with contact electrode (fixed electrode 6 and movable electrode 8).When static capacity is big then voltage share and diminishing.In this case, the current potential of electric arc shield 10 reduces towards the current potential of ground connection outer container 16 that to form be 56%.In addition, solid insulator 13 is 43% with the current potential at the junction point 50 of insulant 3.
Fig. 7 represents that the equipotential surface of solid insulator 15 die formings when the bottom of the shielding end plate 5 of vacuum tank 2 distributes.In this case because solid insulator 15 do not enter between electric arc shield 10 and the ground connection outer container 16, so the current potential of electric arc shield 10 higher slightly than the situation of Fig. 6 be 65%.In addition, because the central shaft side of solid insulator 15 is connected on the fixed conductor 7, so the current potential at junction point 50 is 100%.
Fig. 8 represents that the equipotential surface of solid insulator 15 die formings when the upper end of the insulating cylinder 3 of vacuum tank 2 distributes.In this case, because solid insulator 15 enters between electric arc shield 10 and the ground connection outer container 16 fully,, be 35% so the current potential of electric arc shield 10 declines to a great extent than the situation of Fig. 6.In addition, owing to solid insulator 15 is connected with shielding end plate 4, so the current potential at junction point 50 is 100%.
Fig. 9 is for Fig. 6～three kinds of situations shown in Figure 8, is initial point with the junction point 50 of solid insulator 15 and insulating cylinder 3, relatively solid insulator 15 and to the electric-field intensity distribution in the path at the junction point 51 of ground connection outer container 15 and the performance plot of being represented.The corresponding ground connection outer container 16 of the right of the transverse axis of Fig. 9.The longitudinal axis is the relative value of electric field strength, represents with logarithm.
Characteristic a is the electric-field intensity distribution of expression with the situation of solid insulator 15 Fig. 6 after with the mode die forming that comprises insulating cylinder 3 parts, characteristic b is with the solid insulator 15 die formings electric-field intensity distribution up to Fig. 7 situation of fixation side shielding end plate 5 bottoms, and characteristic c is with the mode die forming that comprises whole insulating cylinder 3 electric-field intensity distribution up to the situation of Fig. 8 of the upper end of insulating cylinder 3 with solid insulator 15.
When they are compared, with the electric field value of solid insulator 15 when comprising the mode die forming of insulating cylinder 3 parts, as indicated in characteristic a, with characteristic b compare greatly reduction with solid insulator 15 with the situation of the mode die forming that comprises whole insulating cylinder 3 up to the situation of bottom of shielding end plate 5 and characteristic c with solid insulator 15 die formings.Therefore, owing to can reduce the electric field that applies along the face direction to solid insulator 15, thus can be with the thickness attenuation of solid insulator 15, can be with the multi circuit selecting switchgear miniaturization.
In addition, except function, also can obtain to improve the effect of insulating reliability at the junction surface 50 of solid insulator 15 with fixing vacuum valve 1.
Figure 10 represents embodiments of the invention 2.In Figure 10, be with the difference of embodiment 1, constitute movable side bus 25 with the pliability conductor.
In embodiment 2, also can reduce the electric field that applies along the face direction to solid insulator 15, in addition, owing to needn't on movable side bus 25, sliding contact be set, so also have the effect that can reduce the part number.
Figure 11～Figure 13 represents embodiments of the invention 3.Figure 11 faces longitudinal section, and Figure 12 is the cutaway view along the B-B line of Figure 11, and Figure 13 is the vertical view of Figure 12.
In embodiment 3, also can reduce the electric field that applies along the face direction to solid insulator 15, can be with the multi circuit selecting switchgear miniaturization.
Figure 15 and Figure 16 represent embodiments of the invention 4.Embodiment 4 is examples of the ground connection outer container 16 in embodiment 3 being made three-phase integrated shape.Whole vacuum valve 1a～1c in each phase of internal configurations (U, V, W) of ground connection outer container 16.
In embodiment 4, also can reduce the electric field that the solid insulator 15 to two-phase applies, in addition, because insulating gas is divided into one, so played the effect of simplified structure.
Claims (7)
1. a multi circuit selecting switchgear possesses: the openend of insulating cylinder is sealed and the vacuum valve of formation with the shielding end plate respectively; Be configured in this vacuum valve and connect the fixed electrode that is arranged on the fixed conductor that runs through an above-mentioned shielding end plate; But be configured in the above-mentioned vacuum valve and connect when being arranged on the moving-conductor that runs through above-mentioned another shielding end plate the movable electrode of relative configuration with the said fixing electrode; Be configured in the electric arc shield in the above-mentioned vacuum valve with surrounding said fixing electrode and movable electrode; And, but cover and seal above-mentioned vacuum valve and enclose the ground connection outer container of insulating gas in inside from above-mentioned moving-conductor one side, it is characterized in that,
The part in the above-mentioned vacuum valve outside is carried out die forming and insulation to movable side with solid insulator from fixation side, and above-mentioned ground connection outer container is sealed to be fixed on the above-mentioned solid insulator.
2. multi circuit selecting switchgear according to claim 1 is characterized in that,
With above-mentioned solid insulator the part in the above-mentioned vacuum valve outside is carried out the also position of insulation of die forming from fixation side to movable side, the static capacity between said fixing electrode or movable electrode and the above-mentioned electric arc shield is littler than the static capacity between above-mentioned electric arc shield and the above-mentioned ground connection outer container.
3. multi circuit selecting switchgear according to claim 1 and 2 is characterized in that,
Each all has above-mentioned vacuum valve in mutually, when the vacuum valve of each phase is carried out die forming and insulation with above-mentioned solid insulator, above-mentioned ground connection outer container each mutually in all sealed being fixed on the above-mentioned solid insulator.
4. multi circuit selecting switchgear according to claim 1 and 2 is characterized in that,
Above-mentioned vacuum valve all has three at each in mutually, to solid insulator die forming and the insulation time that three vacuum valves one of each phase are reinstated each phase, the above-mentioned ground connection outer container of each phase is at each in mutually on the sealed above-mentioned solid insulator that is fixed on each phase.
5. multi circuit selecting switchgear according to claim 4 is characterized in that,
Three above-mentioned vacuum valves of each phase are used separately as disconnect, earthed switch and circuit breaker at each in mutually.
6. multi circuit selecting switchgear according to claim 1 and 2 is characterized in that,
But the upper outer of above-mentioned vacuum valve possesses the movable side bus that is connected with above-mentioned moving-conductor.
7. multi circuit selecting switchgear according to claim 6 is characterized in that,
Above-mentioned movable side bus constitutes with the pliability conductor.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2005278990A JP4234125B2 (en) | 2005-09-27 | 2005-09-27 | Multi-circuit selection switchgear |
| JP2005278990 | 2005-09-27 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1941245A true CN1941245A (en) | 2007-04-04 |
| CN100568434C CN100568434C (en) | 2009-12-09 |
Family
ID=37564972
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006101599398A Expired - Fee Related CN100568434C (en) | 2005-09-27 | 2006-09-26 | Multi circuit selecting switchgear |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP1768149B1 (en) |
| JP (1) | JP4234125B2 (en) |
| CN (1) | CN100568434C (en) |
| DE (1) | DE602006003709D1 (en) |
| SG (1) | SG131084A1 (en) |
| TW (1) | TW200715330A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4555857B2 (en) * | 2007-12-21 | 2010-10-06 | 株式会社日立製作所 | Vacuum insulated switchgear |
| JP4764906B2 (en) | 2008-08-12 | 2011-09-07 | 株式会社日立製作所 | Vacuum switch and vacuum switch gear |
| KR101494790B1 (en) | 2013-05-15 | 2015-02-23 | 엘에스산전 주식회사 | Arc extinguishing unit for solid insulated switchgear |
| JP2023028398A (en) * | 2021-08-19 | 2023-03-03 | 株式会社日立産機システム | gas insulated switchgear |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56114234A (en) * | 1980-02-14 | 1981-09-08 | Meidensha Electric Mfg Co Ltd | Vacuum switching device |
| US4527028A (en) * | 1984-06-27 | 1985-07-02 | Joslyn Mfg. And Supply Co. | Modular vacuum interrupter |
| JP3756025B2 (en) * | 1999-10-04 | 2006-03-15 | 株式会社東芝 | Switchgear |
| JP4537569B2 (en) * | 2000-04-24 | 2010-09-01 | 三菱電機株式会社 | Vacuum insulated switchgear and manufacturing method thereof |
-
2005
- 2005-09-27 JP JP2005278990A patent/JP4234125B2/en active Active
-
2006
- 2006-09-04 TW TW095132575A patent/TW200715330A/en not_active IP Right Cessation
- 2006-09-22 SG SG200606582-5A patent/SG131084A1/en unknown
- 2006-09-25 DE DE200660003709 patent/DE602006003709D1/en active Active
- 2006-09-25 EP EP20060020018 patent/EP1768149B1/en not_active Not-in-force
- 2006-09-26 CN CNB2006101599398A patent/CN100568434C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| EP1768149A1 (en) | 2007-03-28 |
| EP1768149B1 (en) | 2008-11-19 |
| TWI307905B (en) | 2009-03-21 |
| TW200715330A (en) | 2007-04-16 |
| CN100568434C (en) | 2009-12-09 |
| DE602006003709D1 (en) | 2009-01-02 |
| SG131084A1 (en) | 2007-04-26 |
| JP4234125B2 (en) | 2009-03-04 |
| JP2007095316A (en) | 2007-04-12 |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
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Granted publication date: 20091209 Termination date: 20160926 |