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WO2018146720A1 - Dispositif de connexion/déconnexion - Google Patents

Dispositif de connexion/déconnexion Download PDF

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Publication number
WO2018146720A1
WO2018146720A1 PCT/JP2017/004384 JP2017004384W WO2018146720A1 WO 2018146720 A1 WO2018146720 A1 WO 2018146720A1 JP 2017004384 W JP2017004384 W JP 2017004384W WO 2018146720 A1 WO2018146720 A1 WO 2018146720A1
Authority
WO
WIPO (PCT)
Prior art keywords
conductor
insulating spacer
connection
tank
attachment
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.)
Ceased
Application number
PCT/JP2017/004384
Other languages
English (en)
Japanese (ja)
Inventor
隆史 加藤
博紀 矢永
靖憲 真田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Toshiba Energy Systems and Solutions Corp
Original Assignee
Toshiba Corp
Toshiba Energy Systems and Solutions Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Toshiba Corp, Toshiba Energy Systems and Solutions Corp filed Critical Toshiba Corp
Priority to PCT/JP2017/004384 priority Critical patent/WO2018146720A1/fr
Publication of WO2018146720A1 publication Critical patent/WO2018146720A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G5/00—Installations of bus-bars
    • H02G5/06—Totally-enclosed installations, e.g. in metal casings
    • H02G5/063—Totally-enclosed installations, e.g. in metal casings filled with oil or gas
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G5/00—Installations of bus-bars
    • H02G5/06—Totally-enclosed installations, e.g. in metal casings
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G5/00—Installations of bus-bars
    • H02G5/06—Totally-enclosed installations, e.g. in metal casings
    • H02G5/066—Devices for maintaining distance between conductor and enclosure
    • H02G5/068—Devices for maintaining distance between conductor and enclosure being part of the junction between two enclosures

Definitions

  • Embodiment of this invention is related with the attachment or detachment apparatus applied to a gas insulated switchgear.
  • the insulating spacer used in the gas-insulated switchgear serves as an insulating support that supports the conductor in an insulating gas such as SF 6 gas. Further, the insulating spacer has a role as a gas section that separates the pressure vessels filled with the insulating gas compressed at a high pressure while gas-sealing.
  • the existing side terminal portion that is the terminal end of the existing side tank 30 is referred to as the existing side A
  • the additional side terminal portion that is the end of the additional side tank 33 is referred to as the additional side B.
  • the insulation spacer 1 on the existing side A supports the conductor 2.
  • An end shield 3 that is a conductor for relaxing the electric field is detachably attached to the end of the conductor 2.
  • the conductor 2 and the end shield 3 are electrically connected via the contact C.
  • an end shield 5a for relaxing the electric field is also detachably attached to the end of the conductor 5 supported by the insulating spacer 4 on the additional side B.
  • the existing side A is hermetically sealed by an end tank 31
  • the additional side B is hermetically sealed by an end tank 32.
  • FIG. 22 shows an example of the procedure for adding a line for such a detachable device.
  • the existing end tank 31 and the additional end tank 32 are removed, and the end shield 3 and the end shield 5a are removed.
  • the connecting conductor 11 is inserted into the conductor 2 by applying a force in a direction perpendicular to the plane of the insulating spacer 1.
  • the connection conductor 11 is a member having a contactor having a function of adjusting the dimension between the insulating spacers 1 and 4 caused by an equipment installation dimensional tolerance and a part machining tolerance.
  • a detachable conductor 7 having at least two coupling surfaces is incorporated between the connection spacer 11 and the insulating spacer 4.
  • the detachable conductor 7 is bolted to the connecting conductor 11 and the insulating spacer 4.
  • connection conductor 11 when the connection conductor 11 is inserted with a force greater than the frictional force due to the contact contact load, the insertion is completed when the connection conductor 11 collides with the conductor 2. At this time, an impact load corresponding to the weight of the connection conductor 11 is applied to the conductor 2, and the force is transmitted to the insulating spacer 1.
  • the insulating spacer 1 receives pressure from a high-pressure insulating gas sealed in the tank 30 on the existing side A. In this state, it is problematic from the viewpoint of safety to apply the impact load generated at the end when the conductor is inserted as described above.
  • the gas pressure in the tank 30 on the existing side A must be reduced to about atmospheric pressure.
  • the disconnecting device when the disconnecting device is included in the gas section where the pressure is reduced on the existing side A, the function of the disconnecting device cannot be performed due to the decrease in gas pressure. As a result, the line having the disconnector must be stopped.
  • Embodiment of this invention aims at providing the attachment / detachment apparatus which can prevent that an impact force is added when the excessive pressure by the insulating gas has arisen in the insulating spacer.
  • the attachment / detachment device of the embodiment of the present invention includes an insulating spacer for gas classification connected to a tank of a gas insulated switchgear, a conductor supported by the insulating spacer, and a pluggable and electrically connected to the conductor, A connection conductor having a connection surface connectable to another conductor on the opposite side of the conductor, and the connection conductor is not connected to the other conductor when connected to the other conductor In some cases, it has a field relaxation function.
  • FIG. 22 is an axial cross-sectional view showing the connection / removal device of FIG.
  • the present embodiment is an attachment / detachment device configured on the existing side A, and has an insulating spacer 1, a conductor 2, and a connection conductor 6.
  • the insulating spacer 1 is a gas classification member connected to the tank 30 of the gas insulated switchgear.
  • the tank 30 is a metal container, and a flange is formed at an end thereof.
  • the tank 30 may have various shapes such as a circular cross section, an elliptical shape, an oval shape, a cylindrical shape such as a polygonal shape.
  • a cylindrical tank 30 will be described as an example.
  • the insulating spacer 1 is attached to the flange at the end of the tank 30 by, for example, bolt fastening or the like in the vicinity of the outer periphery of one surface, and seals the terminal end of the existing side A of the tank 30.
  • shape of the insulating spacer 1 various shapes such as a circle, an ellipse, an ellipse, and a polygon can be applied according to the cross-sectional shape of the tank 30. A conical shape or a blade shape may be applied.
  • a disk-shaped insulating space 1 will be described as an example.
  • the conductor 2 is a rod-shaped conductive member supported by the insulating spacer 1.
  • the conductor 2 constitutes a line of the gas-insulated switchgear and is disposed in the axial direction of the tank 30 (indicated by a one-dot chain line in the figure). It is attached by bolt fastening.
  • a cylindrical hole 2 a is formed in the end surface of the conductor 2 in the axial direction.
  • the conductor 2 may be configured so as to penetrate the center of the insulating spacer 1 from the tank 30 side in an airtight manner and be fixed to the insulating spacer 1 by bolt fastening or the like.
  • connection conductor 6 is a conductive member that is slidably and electrically connected to the conductor 2 and has a connection surface 62a between the conductor 2 and an internal conductor that is connected between the conductor 2 and the opposite conductor.
  • the connection conductor 6 is inserted into a hole 2a formed in the conductor 2, and is electrically connected to the conductor 2 via a contact C provided in the hole 2a.
  • the connection shape of the connection conductor 6 and the conductor 2 is not limited to the above, The connection conductor 6 should just be inserted in and extracted from the conductor 2 and electrically connected.
  • the connection conductor 6 has an electric field relaxation function when connected to other conductors such as a detachable conductor 7 described later and when not connected to other conductors.
  • the contact C may be provided on the connecting conductor 6 side.
  • the conductor 2 and the connection conductor 6 for example, aluminum or copper can be used.
  • the opposing conductor is a conductor 5 on the additional side B described later.
  • the internal conductor includes a detachable conductor 7 and a conductor 8 described later (see FIG. 2).
  • the connection conductor 6 has a contact 61 and an end shield 62.
  • the contact 61 is inserted into the hole 2 a of the conductor 2.
  • the contact 61 is slidably inserted into the hole 2a and is electrically connected to the conductor 2 via the contact C.
  • the conductor 2 is connected to the conductor 2 by some mechanical method so that it does not come off due to vibration or the like. It is fixed. For example, it is fixed by a bolt or the like.
  • the end shield 62 is an enlarged diameter portion formed continuously with the insertion portion 61 and is exposed to the outside of the conductor 2. This exposure means having a surface exposed from the conductor 2 to the outside, and may or may not have a portion protruding from the diameter of the conductor 2. In the present embodiment, an example in which a portion protruding from the diameter of the conductor 2 is provided will be described.
  • the end shield 62 has a shape having an electric field relaxation function.
  • the outer periphery of the end shield 62 is a continuous curved surface with no corners.
  • connection surface 62 a is a flat surface formed on the end shield 62.
  • the connection surface 62a is in contact with the detachable conductor 7 and has a cross-sectional area capable of supplying at least a rated current (see FIG. 2).
  • the connection surface 62a is formed with a screw hole capable of fastening a fastener such as a bolt or a screw.
  • Each contact surface of the conductor portion is subjected to silver plating for the purpose of stabilizing the contact resistance.
  • the tank 30 is filled with an insulating gas at a rated pressure.
  • An end tank 31 is airtightly attached to the insulating spacer 1 so as to cover the conductor 2 and the connection conductor 6.
  • An insulating gas is also sealed inside the end tank 31.
  • the insulating spacer 1 is of mechanical strength that can withstand even if there is a differential pressure in the gas pressure.
  • the insulating spacer 4 on the expansion side B is a member for gas classification connected to the tank 33 of the gas insulated switchgear.
  • the tank 33 is a metal container, and a flange is formed at an end thereof.
  • the insulating spacer 4 is attached to the flange at the end of the tank 33 by bolt fastening or the like in the vicinity of the outer periphery of one surface, and seals the end of the additional side B of the tank 33.
  • the conductor 5 is a rod-shaped conductive member supported by the insulating spacer 4.
  • the conductor 5 is disposed in the tank 33 and its end is attached to an electrode embedded in the insulating spacer 4 by bolt fastening or the like.
  • the tank 33, the insulating spacer 4, and the conductor 5 have basically the same configuration as the existing side A.
  • an end shield 5a for electric field relaxation is detachably attached to the surface of the insulating spacer 4 opposite to the conductor 5 of the electrode.
  • the inside of the tank 30 may be depressurized, for example, at the time of expansion. “Depressurize” indicates, for example, an enclosed gas pressure of 0.05 MPa-g or less.
  • the bellows bellows 34 is used for the expansion work.
  • the bellows bellows 34 is a metal bellows-shaped cylindrical body, has elasticity, and has flanges at both ends.
  • the detachable conductor 7 and the conductor 8 are used as internal conductors connecting the existing side A and the additional side B.
  • the detachable conductor 7 and the conductor 8 are conductive members having a substantially U-shaped cross section. However, it is not limited to this shape.
  • the end tank 32 and the end shield 5a on the expansion side B are removed.
  • the end tank 31 is removed using the space generated thereby.
  • the flange at one end of the bellows bellows 34 is compressed and connected to the insulating spacer 1 on the existing side A by bolt fastening or the like.
  • the detachable conductor 7 and the conductor 6 are connected by bolt fastening or the like.
  • the conductor 8 is connected to the conductor 5 through the electrode by being attached to the electrode of the insulating spacer 4.
  • the detachable conductor 7 and the conductor 8 are connected by bolt fastening or the like, the bellows bellows 34 is extended, and the other end is connected to the insulating spacer 4 on the extension side B by bolt fastening or the like.
  • the detachable conductor 7 is in contact with the connection surface 62a through one flat surface, and is in contact with the conductor 8 through the other flat surface.
  • the flat surface of the detachable conductor 7 and the connection surface 62a are fixed by, for example, bolt fastening using a screw hole formed in the connection surface 62a.
  • connection conductor 6 having a connection surface 62a that is connected and can be connected to another conductor, for example, an internal conductor, on the side opposite to the conductor 2 is provided.
  • the connecting conductor 6 can be used as it is without being inserted or removed. Therefore, as in the case of inserting the connecting conductor after removing the end shield, the insulating spacer 1 is applied with an impact load. Accidents such as rupture are prevented. Therefore, the expansion work can be performed without reducing the pressure in the tank 30, and the influence of the line stop can be prevented.
  • the detachable conductor 7 is separated from the insulating spacer 1 by the exposed length of the conductor 2 from the insulating spacer 1 and the exposed length of the connecting conductor 6 from the conductor 2. In this manner, since bolt fastening or the like can be performed at a position sufficiently away from the insulating spacer 1, bolt fastening or the like can be performed without damaging the insulating spacer 1 with a fastening tool. More specifically, since a screw hole into which a fastener such as a bolt for fastening the detachable conductor 7 is screwed is formed in the connection surface 62a farthest from the insulating spacer 1, the work location such as bolt fastening is It is sufficiently far from the insulating spacer 1.
  • connection conductor 6 is formed on the contact 61 inserted into the hole 2a formed at the end of the conductor 2, the end shield 62 exposed from the conductor 2, and the end shield 62, and constitutes the connection surface 62a. And a flat surface.
  • connection conductor 6 has a curved surface shape for electric field relaxation on the outer periphery, and the connection surface 62a has at least a cross-sectional area through which a rated current can be passed. Therefore, a safe state can be continuously maintained in both the withstand voltage test before the extension and the energization after the extension.
  • the end shield is configured to further include a part of the connection conductor 10 at the end of the conductor 9.
  • the shape of the conductor 9 supported by the insulating spacer 1 on the existing side A and the connecting conductor 10 connected to the conductor 9 is characteristic. That is, a hole 9 a is formed in the end surface of the conductor 9 in the axial direction, for example. Further, a curved surface portion 9 b is formed at the tip of the conductor 9.
  • the curved surface portion 9b has a shape expanded in a ring shape so that the cross section of the conductor 9 swells in a substantially hemispherical shape. That is, the curved surface portion 9b is formed by an arc having a larger radius R than when the corners are simply rounded.
  • connection conductor 10 has a contact 101 inserted into the hole 9a of the conductor 9 and a connection surface 102. That is, by inserting the conductor 10 into the conductor 9 and fixing it, the tip has a shape constituting an end shield having an electric field relaxation function.
  • connection surface 102 is formed with a screw hole capable of fastening a fastener such as a bolt.
  • the extension procedure of the present embodiment is the same as that of the first embodiment described above.
  • the detachable conductor 7 is fixed to the connection surface 102 by bolt fastening or the like using screw holes. .
  • connection conductor 10 and the conductor 9 constitutes an end shield having an electric field relaxation function.
  • the projecting dimension from the conductor 9 can be minimized. For this reason, the distance between the insulating spacer 1 and the insulating spacer 4, that is, the distance between the existing side A and the additional side B can be minimized.
  • the general connection conductor 11 has a connection surface for connecting to the detachable conductor 7, but the tip shape, that is, the finished dimension of the tip portion of the connection conductor 11 is connected. Since only the electric field relaxation function in a state where the conductor 11 and the detachable conductor 7 are connected is necessary, the radius Rx of the corner arc is small. For this reason, when it becomes a conductor edge part in the state where the detachable conductor 7 is not connected, it does not have an electric field relaxation function.
  • the conductor 9 and the conductor 10 have a connection surface 102 for connecting to the detachable conductor 7 and have an electric field relaxation function even if the detachable conductor 7 is not connected.
  • the tip shape that is, the finishing dimension of the tip portions of the conductors 9 and 10, the radius Ry of the arc is large. For this reason, the conductor 9 and the conductor 10 function as an end shield.
  • connection conductor 10 on the extension side B into the conductor 9 in advance, it is possible to perform connection without applying an impact load due to the insertion of the conductor into the insulating spacer 4 during the extension work. Further, it is possible to perform a bolt fastening operation at a position sufficiently away from the insulating spacer 4, and the conductor can be fastened without damaging the insulating spacer 4 with a fastening tool or the like.
  • the additional side B can be an existing facility. In other words, even in the attachment / detachment operation between two adjacent existing lines, the attachment / detachment operation can be performed without stopping the two existing lines.
  • the hand hole 35 a is a cylindrical opening provided in a part of the peripheral surface of the end tank 35.
  • the opening of the hand hole 35a is a size that allows an operator to insert a hand to perform work.
  • the opening is normally sealed.
  • the extension side B is connected to the insulating spacer 4 with the conductor 2 and the connection conductor 6 by bolt fastening or the like, and is further connected to the existing side A via the detachable conductor 7 in the same manner as the above-described existing side A.
  • the connection conductors 6 on the side A and the expansion side B can be connected by bolt fastening or the like.
  • a tank 35 having a hand hole 35 a is connected to the insulating spacer 1 on the existing side A. For this reason, since both sides of the insulating spacer 1 are sandwiched between the flanges of the tank 30 and the tank 35, the insulating spacer 1 can withstand the differential pressure due to the high-pressure gas even if the mechanical strength is relatively low. Further, when the insulating spacer 1 having a relatively high mechanical strength is used, the breaking strength is further improved.
  • the connecting surface 62 a for connecting to the detachable conductor 7 and the conductor 6 having an electric field relaxation function and a rated current energizing function are inserted in the conductor 2 in advance, so that the detachable conductor 7 is removed.
  • the expansion side B can withstand differential pressure even if the insulating spacer 4 with relatively low mechanical strength is used, and if the insulating spacer 4 with relatively high mechanical strength is used, higher safety is ensured. can do.
  • the slide bellows 36 is a device that has a pair of metallic cylindrical bodies, one cylindrical body is inserted into the other cylindrical body, and expands and contracts by sliding, and flanges are provided at both ends. .
  • the end tank 32 and the end shield 5a are removed.
  • the end tank 31 is removed using the space generated thereby.
  • a flange at one end is attached to the insulating spacer 1 on the existing side A by bolt fastening or the like.
  • the detachable conductor 7 and the conductor 10 are connected by bolt fastening or the like, and the conductor 8 is attached to the insulating spacer 4.
  • the detachable conductor 7 and the conductor 8 are connected by bolt fastening or the like, the slide bellows 36 is extended, and the other flange is attached to the insulation spacer 4 on the extension side B by bolt fastening or the like.
  • the insulating spacer 1 is attached to the tank 30, and further the gas pressure P generated in the insulating spacer 1 from the inside of the tank 30 in a state where the insulating spacer 1 is tightened from both sides by the ring 37.
  • pressure is applied.
  • the insulating spacer 1 Since the insulating spacer 1 is sandwiched and fixed between the flange of the tank 30 and the ring 37, the insulating spacer 1 is fixed to the positions of both ends of ⁇ A by the flange. In this state, when a high gas pressure P is applied to the insulating spacer 1, the deformation starts from the positions at both ends of ⁇ A and is deformed by the strain amount ⁇ 1.
  • the case where the insulating spacer 1 is fixed only on one side by the flange of the tank 30 is considered.
  • the insulating spacer 1 is fixed at both ends of ⁇ C by the flange and the stud of the tank 30.
  • the gas pressure P is applied to the insulating spacer 1 in this state, the deformation starts from the positions at both ends of ⁇ C and is deformed by the strain amount ⁇ 2.
  • the position where the insulating spacer 1 is fixed is ⁇ C> ⁇ A
  • the amount of deformation is ⁇ 2> ⁇ 1
  • the stress generated at that time is larger when only one side is fixed. That is, as compared with the case where the insulating spacer 1 is fixed from both sides, the one that is fixed only on one side has a lower breaking strength and is more likely to break.
  • the insulating spacer 1 when the insulating spacer 1 has a relatively high mechanical strength, it can withstand the differential pressure due to the high-pressure gas even when it is fixed to the flange only on one side.
  • the mechanical strength of the insulating spacer 1 is relatively weak, there are some that cannot withstand the differential pressure due to the high-pressure gas only by fixing with the flange on one side.
  • the both sides of the insulating spacer 1 are sandwiched and fixed by flange-like members, so that only the assembly of the attaching / detaching device is performed without reducing the gas pressure in the tank 30 or the tank 33 on the existing side A or the extension side B.
  • the mechanical strength can be improved.
  • the detachable conductor 7 on the existing side A and the detachable conductor 7 on the additional side B are connected by bolt fastening or the like, and the bellows bellows 34 is extended and attached to the insulating spacer 4 on the additional side B.
  • the configuration of this embodiment will be described with reference to FIGS.
  • the present embodiment is basically the same configuration as the third embodiment.
  • one end of a bellows bellows 34 of the attachment / detachment device is connected to the insulating spacer 1.
  • the other end of the bellows bellows 34 is sealed with a cover 40.
  • One end of an end tank 38 is connected to the insulating spacer 4 and the other end is sealed with a cover 40.
  • the insulating spacers 1 and 4 used may have a relatively low mechanical strength or a high one.
  • the bellows bellows 34 and the tank 38 are separated end tanks, the number of parts required for a series of attaching and detaching operations is reduced, which contributes to cost reduction.
  • the existing side A is the tank 38 and the additional side B is the bellows bellows 34.

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  • Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Gas-Insulated Switchgears (AREA)
  • Installation Of Bus-Bars (AREA)

Abstract

Le problème décrit par la présente invention est de fournir un dispositif de connexion/déconnexion capable d'empêcher l'application d'une force d'impact lorsqu'une pression excessive due à un gaz isolant se produit sur un élément d'espacement isolant. À cet effet, l'invention concerne un dispositif de connexion/déconnexion comprenant : un élément d'espacement isolant de séparation de gaz 1 relié à un réservoir 30 d'un appareillage de commutation à isolation gazeuse ; un conducteur 2 supporté par l'élément d'espacement isolant 1 ; et un conducteur de connexion 6 électriquement connecté au conducteur 2 et ayant une surface de connexion 62a sur le côté opposé au conducteur 2, ladite surface de connexion 62a étant apte à être connectée à un autre conducteur. Le conducteur de connexion 6 a une structure apte à être insérée/extraite dans/depuis le conducteur 2 à travers un point de contact et, même lorsqu'elle n'est pas connectée à un conducteur de connexion/déconnexion, a une fonction de relaxation de champ électrique dans la région de connexion.
PCT/JP2017/004384 2017-02-07 2017-02-07 Dispositif de connexion/déconnexion Ceased WO2018146720A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/JP2017/004384 WO2018146720A1 (fr) 2017-02-07 2017-02-07 Dispositif de connexion/déconnexion

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2017/004384 WO2018146720A1 (fr) 2017-02-07 2017-02-07 Dispositif de connexion/déconnexion

Publications (1)

Publication Number Publication Date
WO2018146720A1 true WO2018146720A1 (fr) 2018-08-16

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PCT/JP2017/004384 Ceased WO2018146720A1 (fr) 2017-02-07 2017-02-07 Dispositif de connexion/déconnexion

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115224655A (zh) * 2022-08-09 2022-10-21 鼎圣集团有限公司 一种角度可调的l型加强端脚母线槽

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54173932U (fr) * 1978-05-30 1979-12-08
JPS5561226A (en) * 1978-10-30 1980-05-08 Tokyo Shibaura Electric Co Enclosed bus line
JPS59159128U (ja) * 1983-04-11 1984-10-25 株式会社東芝 着脱母線
JPH10271650A (ja) * 1997-03-28 1998-10-09 Toshiba Corp ガス絶縁開閉装置
JP2002142340A (ja) * 2000-11-06 2002-05-17 Toshiba Corp ガス絶縁着脱母線装置

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54173932U (fr) * 1978-05-30 1979-12-08
JPS5561226A (en) * 1978-10-30 1980-05-08 Tokyo Shibaura Electric Co Enclosed bus line
JPS59159128U (ja) * 1983-04-11 1984-10-25 株式会社東芝 着脱母線
JPH10271650A (ja) * 1997-03-28 1998-10-09 Toshiba Corp ガス絶縁開閉装置
JP2002142340A (ja) * 2000-11-06 2002-05-17 Toshiba Corp ガス絶縁着脱母線装置

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115224655A (zh) * 2022-08-09 2022-10-21 鼎圣集团有限公司 一种角度可调的l型加强端脚母线槽
CN115224655B (zh) * 2022-08-09 2023-10-10 鼎圣集团有限公司 一种角度可调的l型加强端脚母线槽

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