EP2360798B1 - Dispositif de commutation impérméable au gaz - Google Patents

Dispositif de commutation impérméable au gaz Download PDF

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Publication number
EP2360798B1
EP2360798B1 EP09829033.1A EP09829033A EP2360798B1 EP 2360798 B1 EP2360798 B1 EP 2360798B1 EP 09829033 A EP09829033 A EP 09829033A EP 2360798 B1 EP2360798 B1 EP 2360798B1
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EP
European Patent Office
Prior art keywords
operating rod
insulated
rod
gas
moving rod
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP09829033.1A
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German (de)
English (en)
Other versions
EP2360798A1 (fr
EP2360798A4 (fr
Inventor
Ryoichi Shinohara
Toshiaki Rokunohe
Tatsuro Kato
Kenji Aoyagi
Takeshi Ito
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Hitachi Ltd
Original Assignee
Hitachi Ltd
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Filing date
Publication date
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Publication of EP2360798A1 publication Critical patent/EP2360798A1/fr
Publication of EP2360798A4 publication Critical patent/EP2360798A4/fr
Application granted granted Critical
Publication of EP2360798B1 publication Critical patent/EP2360798B1/fr
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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
    • H01H33/02—Details
    • H01H33/42—Driving mechanisms
    • 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
    • H01H33/70—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

Definitions

  • the present invention relates to such a gas-insulated switchgear that the switching movement of the moving rod thereof is caused by use of an insulated operating rod that rotates around its rotational axis.
  • a gas-insulated switchgear is comprised of a switching device that uses a moving rod the switching movement of which is caused by an operating device. Therefore, if metallic particle are emitted on the high-voltage side relating to the switching movement of the moving rod in the switching device for example, it is probable that the dielectric strength performance of the switching device may be lowered greatly.
  • JP 2002-245909 Patent literature 1
  • JP 2008-176942 Patent literature 2
  • JP H8-298040 Patent literature 3
  • US 2006/243091 discloses a gas-insulated swicthgear according to the preamble of claim 1.
  • the later mechanism which uses the move in the form of a segment of a circle of the insulated operating rod, has such an advantageous feature that reduction of number of constituent parts and simplification of the mechanism are attainable easily.
  • Those insulated operating rods that are of these types of mechanism configuration usually use so-called fiber reinforced plastics (FRP), main constituent of which is glass fiber, as their material.
  • FRP fiber reinforced plastics
  • FRP has problems.
  • the dielectric strength of FRP becomes greatly lowered, if FRP involves follow fibers therein mixed at the manufacturing stage.
  • the dielectric strength of FRP becomes low, because cracked gas damages glass fibers in FRP causing aging degradation thereof.
  • the dielectric strength of the insulated operating rod that uses FRP greatly lowers.
  • An object of the present invention is to provide a small-sized gas-insulated switchgear with reduced number of constituent parts.
  • the present invention provides a gas-insulated switchgear has a sealed container filled with insulating gas; a bar-shaped rotary shaft driven and rotated by an operating device with the sealed container maintained hermetically; an insulated operating rod.
  • the one end of the insulated operating rod is fixed on the bar-shaped rotary shaft and the other end of the insulated operating rod is moved in the form of a segment of a circle by rotation of the bar-shaped rotary shaft.
  • the gas-insulated switchgear has a moving rod connected to the other end of the insulated operating rod and driven in an axial direction to perform switching operation.
  • the bar-shaped rotary shaft has a large-diameter part formed integrally at the axial-middle part thereof, and the insulated operating rod is cast integrally with the large-diameter part by using filler-filled resin so that the large-diameter part is embedded into one end of the insulated operating rod.
  • the insulated operating rod has a sliding surface formed on the other end thereof, the sliding surface is formed to slide on the moving rod at roughly one-point on the axis line of the moving rod during the switching operation.
  • the large-diameter part on the axial-middle part of the rotary shaft has an elliptical shape, the diameter of the large-diameter part along the axial direction of the insulated operating rod is a long diameter, and the diameter of the large-diameter part along the width direction of the insulated operating rod is a short diameter.
  • the material for the resin includes epoxy resin or phenol resin.
  • the filler filled in the resin includes alumina or silica.
  • the gas-insulated switchgear by the present invention provides an insulated operating rod having enhanced dielectric strength compared to the conventional FRP insulated operating rod. This feature is brought about not only from improved abrasion resistance given by the filler filled in the resin but also from greatly enhanced mechanical strength given by increased reinforcement and reduced residual stress. Thereby, the small-sizing of the gas-insulated switchgear and number-reduction of constituent parts therein are realized while reliability of insulation system thereof is assured.
  • the gas-insulated switchgear by the present invention provides features as follows.
  • the position of contact between the insulated operating rod and the moving rod on the sliding surface changes its location as the insulated operating rod rotates.
  • this contact point falls always approximately on the central axis line of the moving rod as far as the insulated operating rod moves rotationally within the predetermined range of angles. Therefore, when the moving rod is moved toward circuit closing by the rotation of the insulated operating rod, the moving rod smoothly moves linearly on the central axis line.
  • Fig. 1 is a sectional view that illustrates a disconnecting switch as the gas-insulated switchgear in an embodiment of the present invention.
  • a high-voltage conductors 2 and 3 are supported in a state electrically insulated by an insulating spacers 4 and 5.
  • a fixed contactor 7 is fixed.
  • an electric field controlling shield 8 is arranged on the periphery of the fixed contactor 7.
  • a moving contactor 11 is installed using a moving-side cylindrical conductor 10.
  • the electric field controlling shield 12 is arranged on the periphery of the moving contactor 11.
  • a moving rod 13 that is provided for bridging between the fixed-side contact 7 and the moving-side contact 11 in an openable and closable manner is connected to one end of an insulated operating rod 14, the free end thereof, in a manner of the contact and connection so as to make a switching movement on its central axis line.
  • a rotary shaft 15 which hermetically leads out to the outside of the sealed container 1, is connected.
  • an operating device (not illustrated) is connected to the rotary shaft 15.
  • Both sides of the free end of the insulated operating rod 14 severally have a contrived curved surface on their parts that contact with the moving rod 13.
  • a part on the moving rod 13 as contacts with the curved surface is a flat plane; therefore, they contact each other almost in one-point contact.
  • the uniquely designed shape of the curved surface makes the contact point between the moving rod 13 and the insulated operating rod 14 be kept always aligned almost on the central axis line of the moving rod 13.
  • the distal end of the moving rod 13 separates from the fixed contactor 7 retracting into the inside of the electric field controlling shield 12 to reach the circuit-open state as illustrated in Fig. 2 .
  • the rotary shaft 15 is rotated counterclockwise by the operating device (not illustrated) from the circuit-open state as indicated in Fig. 2
  • the free end of the insulated operating rod 14 integrally formed on the rotary shaft 15 rotates counterclockwise around its central axis.
  • the insulated operating rod 14 drives the moving rod 13 connected thereto in a manner of the contact and connection toward the left side, in the circuit closing direction, on its central axis line.
  • the distal end of the moving rod 13 contacts with the fixed contactor 7 to establish the circuit-closed state as illustrated in Fig. 1 .
  • Fig. 3 is an enlarged perspective view that illustrates the joint part between the insulated operating rod 14 and the rotary shaft 15.
  • the rotary shaft 15 is a bar-shaped and has an large-diameter part 16 integrally formed at the axially-middle portion thereof, wherein the large-diameter part 16 is given a rounded shape to relax electric field.
  • the integrally formed large-diameter part 16 is given for example such an elliptical shape that the diameter thereof along the axis of the insulative rod 14 is large diameter and that the diameter thereof along the width of the insulative rod 14 is a small diameter.
  • the shape applicable to the large-diameter part 16 of the rotary shaft 15 is not limited to such an elliptical shape as stated above; also an edge-rounded polygon is applicable too.
  • the insulated operating rod 14 made of FRP is used.
  • the insulated operating rod 14 is manufactured integrally by cast involving both end faces 16a and 16b of the large-diameter part 16 on the axial direction with respect to the rotary shaft 15, using filler-filled resin. This practice prevents the appearing of minute gaps on boundaries among the resin and the rotary shaft 15 and the diameter-enlarged part 16 by eliminating gap that may appear between the insulated operating rod 14 and the diameter-enlarged part 16 of the rotary shaft 15 because of resin contraction that occurs while resin curing.
  • Fig. 4 is a property diagram that shows the relationship between the amount of filler filled in resin and the abrasion loss, wherein the filler is alumina or silica and the resin is epoxy resin.
  • the abrasion property curve 17A represented by a solid line, wherein alumina is filled and the abrasion property curve 17B represented by a dotted line, wherein silica is filled, indicate that the effect such that alumina or silica, the rigidity of which is high, suppresses abrasion of epoxy resin appears more clearly as the filler amount of alumina or silica increases.
  • a practical range of filler amount of alumina or silica as the filler is 45 to 75 wt-%.
  • Fig. 5 is a property diagram that shows the relationship between the amount of filler filled in resin and the strength, wherein the filler is alumina or silica and the resin is epoxy resin.
  • the static strength curve 18A and the fatigue strength curve 19A represented respectively by the thin solid line and the thick solid line, indicate that the static strength and the fatigue strength improve more, when the filler amount of alumina is more than a predetermined amount, compared to those cases where resin is used alone. This is because of that particles of alumina, rigidity of which is high, shares the internal stress inside the resin and therefrom a reinforcing effect appears preventing minute peering-off.
  • the static strength curve 18B and the fatigue strength curve 19B indicated respectively with the thin dotted line and the thick dotted line, demonstrate similar property behavior.
  • Fig. 6 is a property diagram that shows the relationship between the amount of alumina or silica filled in epoxy resin as the filler and the linear expansion coefficient.
  • both the linear expansion coefficient curves 20A and 20B represented respectively by the solid line and the dotted line, indicate that the linear expansion coefficient becomes smaller as the filler amount of alumina in the epoxy resin increases showing coefficient differences from the linear expansion coefficients of iron (1.3 x 10-5/°C) and of aluminum (2.5 x 10-5/°C) come to be small.
  • filler amount of alumina in the case where epoxy resin is used for example, about 50 wt-% of filler amount of alumina can make the linear expansion coefficient to be almost equivalent to that of aluminum.
  • Alumina or silica as the filler for epoxy resin should be used considering the linear expansion coefficient of the filler-filled epoxy resin when combined with aluminum, copper, or iron.
  • the insulated operating rod 14 having the style illustrated in Fig. 3 , it becomes practicable to reduce the residual stress by employing the practice: preparing the filler-filled resin by filling epoxy resin with alumina or silica as the filler so that the linear expansion coefficient of the filler-filled resin will be close to that of the rotary shaft 15 of metal such as iron or copper or aluminum and then integrally forming the insulated operating rod 14 on the rotary shaft 15 by cast using thus prepared filler-filled resin.
  • the structure such that the insulated operating rod 14 and the rotary shaft 15 are integrally fabricated with the cast as stated above offers not only an improved abrasion resistance given by the filler but also a greatly enhanced mechanical strength given by increased reinforcement and reduced residual stress. Further, reduction of thickness of the insulated operating rod 14 becomes practicable without loss of mechanical reliability. Moreover, improved performance in dielectric strength, or through-breakdown voltage, of the resin can be expected and thereby the length of the insulated operating rod 14 can be shortened more than the length of the same manufactured with no filler.
  • epoxy resin resin having high resistivity against water or cracked gas like phenol resin is also usable.
  • Usable material as the filler is not limited to alumina but silica is also usable with expectation of the almost same effect as stated above.
  • the insulated operating rod 14 transfers the switching manipulation power from the operating device to the moving rod 13, which makes switching movement in the disconnecting switch of a gas-insulated switchgear, or an earthing switch and a circuit breaker having a construction similar to the disconnecting switch. Therefore, integrally forming the insulated operating rod 14 on the rotary shaft 15 by cast using filler-filled resin improves the dielectric strength more than that of the insulated operating rod of FRP. Thus thereby, the small-sizing of the gas-insulated switchgear and number-reduction of constituent parts therein are realized while reliability of insulation system thereof is assured.
  • epoxy resin or phenol resin as the material for the molding of the insulated operating rod 14 permits giving an excellent properties in water resistance and SF6 cracked gas resistance to the insulated operating rod 14 even though the coating work which the conventional FRP type rod requires is omitted.
  • Fig. 7 is an enlarged view that illustrates the linking part between the free end of the insulated operating rod 14 and the moving rod 13.
  • sliding surfaces 21 on the both sides of the free end of the insulated operating rod 14 that contact with the moving rod 13 and slide on the moving rod 13 are given such a curved surface that the contact always occurs at almost one-point on the central axis line of the moving rod 13. Details are as follows: each of the sliding surfaces 21 on the free end of the insulated operating rod 14 that contacts with the moving rod 13 and slides on the moving rod 13 is given a curved surface having the ellipsoidal curvature. Where the minor axis and the major axis of an ellipse are denoted by a and b respectively, the ellipse on the X-Y plane is expressed by Equation 1 given below.
  • the sliding surfaces 21 of the insulated operating rod 14 that contact with the moving rod 13 and slide on the moving rod 13 as illustrated in Fig. 7 may be given a full-ellipsoidal shape as the dotted line in Fig. 7 describes, or instead, may be given a part-of-ellipsoidal shape as the solid line in Fig. 7 describes with the upper part thereof cut off leaving such a part as actually contacts with the moving rod 13.
  • b ⁇ 2 ⁇ x ⁇ 2 + a ⁇ 2 ⁇ y ⁇ 2 a ⁇ 2 ⁇ b ⁇ 2
  • Equation 2 indicates that the rotation is equivalent to a rotation of a ⁇ /b in terms of the move in the form of a segment of a circle when the range of ⁇ is defined as -45° ⁇ ⁇ ⁇ 45°.
  • Fig. 8 indicates, for comparison purpose, the variation of displacement of the contact point 26 for the cases where the shape of the sliding surface 21 of the insulated operating rod 14, which contacts with the moving rod 13, is a circle, and where the shape of the sliding surface 21 is an ellipse.
  • the displacement is calculated by the equation R(1 - cos ⁇ ).
  • the displacement of the contact point 26 actually contacting with the moving rod 13 is below 3 mm from the central axis line of the moving rod 13 as indicated in Fig. 9 , which means that the contact occurs almost at one-point on the central axis line of the moving rod 13.
  • one end of the insulated operating rod 14 has the rotary shaft 15 secured thereto by cast integrally.
  • the insulated operating rod 14 is arranged so that the other end, i.e., the free end, thereof will rotate around the rotary shaft 15 describing a circular arc and so that the other end will contact with the end face of the moving rod 13 to establish the contact and connection.
  • the shape of the through-hole 27 is designed so that a pair of end faces 28a and 28b will be formed perpendicularly to the central axis line of the moving rod 13.
  • the shape of such a part of the insulated operating rod 14 as contacts with the pair of end faces 28a and 28b is given an elliptical shape on both sides thereof to provide the sliding surface 21.
  • the ellipse-shaped sliding surface 21 is formed on such a part of the insulated operating rod 14 as contacts with the end faces 28a and 28b so that the counterclockwise rotation of the insulated operating rod 14, which is transmitted as the circuit-closing movement will push the end face 28a of the moving rod 13 and so that the clockwise rotation of the insulated operating rod 14, which is transmitted as the circuit-opening movement, will push the end face 28b of the moving rod 13.
  • the driving force transmitted from the insulated operating rod 14 to the moving rod 13 produces a component of force perpendicular to the central axis line of the moving rod 13 as the arrow indicates; this component of force works as an oblique force as a whole with respect to the central axis line of the moving rod 13.
  • the contact and connection having the construction illustrated in Fig. 12 increases the sliding frictional drag that will be impressed on the insulated operating rod 14 of an insulating material and on the moving rod 13 of metallic material. Further, there appears a component of force perpendicular to the central axis line of the moving rod 13 and thereby an excessive uneven force acts on the contactor 13 on every circuit-closing movement.
  • gas-insulated switchgear is prone to greatly lower its dielectric strength performance if metallic particle exists within the sealed container 1 inside of which the high-voltage conductor is accommodated. Therefore, gas-insulated switchgears are carefully controlled so that no metallic particle will invade.
  • a tulip style contactor in which contacting segments are arranged periphery of the moving rod 13, plural springs 27 are arranged over the contacting segments like the moving contactor 11 illustrated in Fig. 11 so that the contacting force will work on the moving rod 13 for maintaining good electrical contact therewith even while in motion. Therefore, where contactors 7 and 11 are employed, it is preferable to regulate the spring force so that the periphery of the moving rod 13 will receive the spring force evenly.
  • lubricant like grease is applied on a metal-metal sliding portion to make sliding movement smooth for reduction of the frictional drag on such sliding portion.
  • the frictional drag will increase making it highly possible to invite emission of hair-like or powder-like fragments of metallic particle attributable to scraping.
  • the sliding portion may be prevented from smooth movement if greasing performance becomes poor because of deterioration or depletion due to long-time use.
  • Fig. 15 and Fig. 16 are the plan view and the sectional view respectively. They illustrate the configuration of the contact and connection between the insulated operating rod 14 and the moving rod 13 in another embodiment.
  • the configuration of the sliding surface 21 on the free end of the insulated operating rod 14 is the same as that in the above-stated embodiment.
  • the moving rod 13 has a holder part 29 on the right side to establish the linkage with the insulated operating rod 14 in addition to a conductor portion on the left side for electrical current-carrying.
  • the holder part 29 has the through-hole 27, explained in terms of Fig. 13 , which is detachably secured on the conductor portion with a screw 30.
  • the frictional drag that appears in a sliding motion can be made low by using same material. Therefore, the frictional drag is repressed further-lower by using the same material as the one used in the insulated operating rod 14 stated above for the insulating material of the holder part 29.
  • the insulated operating rod 14 uses the filler-filled epoxy resin
  • a derivation of embodiments illustrated in Figs. 15 and 16 it may be practicable to affix the same material as used in the insulated operating rod 14 on such a portion of the holder part 29 as contacts with the insulated operating rod 14 instead of manufacturing the whole body of the holder part 29 using the same material as used in the insulated operating rod 14.
  • the sliding occurs between same materials with considerably lowered frictional drag. Therefore, such a contact and connection as works smoothly without lubricant like grease can be established.
  • Fig. 17 and Fig. 18 are the plan view and the sectional view respectively. They illustrate the configuration of the contact and connection between the insulated operating rod 14 and the moving rod 13 in another embodiment.
  • the configuration of the contact and connection in this embodiment is similar to that in the embodiment illustrated in Figs. 15 and 16 , wherein thin films 31a and 31b of solid lubricant are provided on the contacting portion at which the holder part 29 of the moving rod 13 contacts with the insulated operating rod 14.
  • Fluorocarbon resin like polytetrafluoroethylene (PTFE) is applicable as the solid lubricant in this configuration.
  • the gas-insulated switchgear by the present invention is applicable not only to the disconnecting switch illustrated in Fig. 1 but also to switching devices in other configuration.

Landscapes

  • Gas-Insulated Switchgears (AREA)
  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Displays For Variable Information Using Movable Means (AREA)
  • Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)

Claims (5)

  1. Dispositif de commutation imperméable au gaz comportant :
    un récipient scellé (1) rempli d'un gaz isolant,
    un arbre rotatif en forme de barre (15) entraîné en rotation par un dispositif d'actionnement en maintenant le récipient fermé hermétiquement,
    une tige de commande (14), l'une des extrémités de la tige de commande étant fixée sur l'arbre rotatif en forme de barre, l'autre extrémité de la tige de commande étant déplacée sous la forme d'un segment d'un cercle par rotation de l'arbre rotatif en forme de barre, et
    une tige mobile (13) reliée à l'autre extrémité de la tige de commande (14) et entraînée dans une direction axiale pour effectuer une opération de commutation,
    dans lequel l'arbre rotatif en forme de barre (15) a une partie de grand diamètre formée d'un seul tenant avec la partie axiale intermédiaire de celui-ci, caractérisé en ce que la tige de commande (14) est une tige de commande isolée et est moulée d'un seul tenant avec la partie de grand diamètre à l'aide de résine remplie d'une matière de remplissage de sorte que la partie de grand diamètre est incorporée dans une extrémité de la tige de commande isolée.
  2. Dispositif de commutation imperméable au gaz selon la revendication 1, dans lequel la tige de commande isolée a une surface de glissement formée sur l'autre extrémité de celle-ci, la surface de glissement étant formée pour coulisser sur la tige mobile d'environ un point sur la ligne axiale de la tige mobile au cours de l'opération de commutation.
  3. Dispositif de commutation imperméable au gaz selon la revendication 1 ou la revendication 2, dans lequel la partie de grand diamètre sur la partie axiale intermédiaire de l'arbre rotatif a une forme elliptique, le diamètre de la partie de grand diamètre le long de la direction axiale de la tige de commande isolée est un long diamètre, et le diamètre de la partie de grand diamètre le long de la direction de la tige de commande isolée est un court diamètre.
  4. Dispositif de commutation imperméable au gaz selon les revendications 1 à 3, dans lequel le matériau de la résine comprend une résine époxy ou une résine phénolique.
  5. Dispositif de commutation imperméable au gaz selon les revendications 1 à 4, dans lequel la matière de remplissage remplissant la résine comprend de l'alumine ou de la silice.
EP09829033.1A 2008-11-26 2009-11-16 Dispositif de commutation impérméable au gaz Active EP2360798B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2008300619 2008-11-26
PCT/JP2009/069676 WO2010061785A1 (fr) 2008-11-26 2009-11-16 Dispositif de commutation impérméable au gaz

Publications (3)

Publication Number Publication Date
EP2360798A1 EP2360798A1 (fr) 2011-08-24
EP2360798A4 EP2360798A4 (fr) 2013-11-20
EP2360798B1 true EP2360798B1 (fr) 2014-08-20

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EP09829033.1A Active EP2360798B1 (fr) 2008-11-26 2009-11-16 Dispositif de commutation impérméable au gaz

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EP (1) EP2360798B1 (fr)
JP (1) JP5135442B2 (fr)
CN (1) CN102187537B (fr)
HK (1) HK1158384A1 (fr)
WO (1) WO2010061785A1 (fr)

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DK3252793T3 (da) 2016-06-03 2021-04-12 Abb Schweiz Ag Omskifteranordning med dobbelt ledende hus
JP2023032081A (ja) * 2021-08-26 2023-03-09 株式会社日立産機システム 真空遮断器

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JPS48103862U (fr) * 1972-03-08 1973-12-04
JPH01161633A (ja) * 1987-12-18 1989-06-26 Fuji Electric Co Ltd 高電圧開閉器の動作位置検出装置
JPH04359821A (ja) * 1991-06-04 1992-12-14 Mitsubishi Electric Corp 開閉器の操作リンク機構
JPH05114337A (ja) * 1991-10-23 1993-05-07 Fuji Electric Co Ltd 開閉器
JPH0684431A (ja) * 1992-09-03 1994-03-25 Fuji Electric Co Ltd 直線形３位置断路器
JP3294464B2 (ja) 1995-04-26 2002-06-24 三菱電機株式会社 回路遮断器操作装置および真空回路遮断器
JPH0928011A (ja) * 1995-07-13 1997-01-28 Fuji Electric Co Ltd ガス絶縁開閉装置の断路器および接地開閉器
JP4218216B2 (ja) 2001-02-22 2009-02-04 株式会社日立製作所 ガス遮断器
ATE323943T1 (de) * 2003-07-02 2006-05-15 Abb Research Ltd Kraftübertragungselement, verfahren zu dessen herstellung und vorrichtung zur durchführung des verfahrens
JP4601487B2 (ja) * 2005-05-02 2010-12-22 三菱電機株式会社 ガス絶縁開閉機器
JP4612495B2 (ja) * 2005-07-21 2011-01-12 株式会社日本Ａｅパワーシステムズ ガス絶縁開閉器
JP4852434B2 (ja) 2007-01-16 2012-01-11 株式会社日本Ａｅパワーシステムズ ガス絶縁開閉器

Also Published As

Publication number Publication date
CN102187537B (zh) 2013-11-27
HK1158384A1 (en) 2012-07-13
EP2360798A1 (fr) 2011-08-24
EP2360798A4 (fr) 2013-11-20
JPWO2010061785A1 (ja) 2012-04-26
JP5135442B2 (ja) 2013-02-06
CN102187537A (zh) 2011-09-14
WO2010061785A1 (fr) 2010-06-03

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