EP1152444B1 - Appareillage de commutation - Google Patents

Appareillage de commutation Download PDF

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Publication number
EP1152444B1
EP1152444B1 EP00931702A EP00931702A EP1152444B1 EP 1152444 B1 EP1152444 B1 EP 1152444B1 EP 00931702 A EP00931702 A EP 00931702A EP 00931702 A EP00931702 A EP 00931702A EP 1152444 B1 EP1152444 B1 EP 1152444B1
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EP
European Patent Office
Prior art keywords
ground
conductor
switch gear
insulating
vacuum vessel
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.)
Expired - Lifetime
Application number
EP00931702A
Other languages
German (de)
English (en)
Other versions
EP1152444A1 (fr
EP1152444A4 (fr
Inventor
Toshimasa Mitsubishi Denki KK MARUYAMA
Toshifumi Mitsubishi Denki KK SATO
Minoru Mitsubishi Denki KK KOBAYASHI
Seiichi Mitsubishi Denki KK MIYAMOTO
Takayuki Mitsubishi Denki KK ITOTANI
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.)
Mitsubishi Electric Corp
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Mitsubishi Electric Corp
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Filing date
Publication date
Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Publication of EP1152444A1 publication Critical patent/EP1152444A1/fr
Publication of EP1152444A4 publication Critical patent/EP1152444A4/fr
Application granted granted Critical
Publication of EP1152444B1 publication Critical patent/EP1152444B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
    • 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
    • H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
    • H01H31/003—Earthing switches
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/58—Electric connections to or between contacts; Terminals
    • H01H1/5822—Flexible connections between movable contact and terminal
    • 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
    • H01H2033/6623—Details relating to the encasing or the outside layers of the vacuum switch housings
    • 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
    • H01H2033/6668—Operating arrangements with a plurality of interruptible circuit paths in single vacuum chamber
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/12—Means for earthing parts of switch not normally conductively connected to the contacts

Definitions

  • the present invention relates to a test terminal structure of a composite insulation vacuum switching apparatus (switch gear) having a vacuum vessel molded therein which accommodates a plurality of switches including main circuit switches each having a circuit-breaking portion and a circuit-disconnecting portion for connecting and disconnecting a bus side and a load side, and ground switches each for connecting and disconnecting the load side and a ground conductor.
  • switch gears are used for applications of distributing electric power received from a bus to a variety of kinds of load equipment, other electric rooms, etc., and they are constructed such that within an external box formed of a ground metal, there are properly arranged internal equipment such as a circuit main switch for connecting and disconnecting between bus side conductors and load side conductors, ground switches for grounding the load side conductors, control equipment necessary for supervisory control, etc., together with connection conductors such as the bus side conductors used for connection with the bus, and the load side conductors used for connection with transmission cables coupled to loads.
  • internal equipment such as a circuit main switch for connecting and disconnecting between bus side conductors and load side conductors, ground switches for grounding the load side conductors, control equipment necessary for supervisory control, etc.
  • Fig. 8 is a constructional view illustrating essential portions of a conventional switch gear described in, for example, the above-mentioned Japanese Patent Publication No. 7-28488
  • Fig. 9 is a circuit diagram of the switch gear illustrated in Fig. 8 .
  • a vessel 100 is formed of a ground metal, and has an SF 6 gas (insulating gas) sealingly filled therein.
  • Bushings 92a for connection with transmission cables and bushings 92b for connection with external buses are air-tightly mounted on and extend through the surrounding wall of the vessel 100.
  • first, second and third switches 50, 51 and 52 as well vacuum arc-extinguishing chambers 90 are provided in the vessel 100.
  • Three bus side branch conductors 61 are supported by corresponding support insulators 110, respectively, disposed in the vessel 100, and connected with the unillustrated external three-phase buses of the corresponding phases, respectively, through the bushings 92b. These bus side branch conductors 61 are connected with the first switches 50 through the switching devices (not shown) in the corresponding vacuum arc-extinguishing chambers 90, respectively.
  • Intermediate conductors 60 are disposed in the vessel 100 while being fixedly supported by the corresponding support insulators 111, respectively.
  • the first switches 50 are connected with intermediate conductors 60, respectively, so that they are branched by the intermediate conductors 60 in two directions and connected with the second and third switches 51 and 52.
  • Six load side conductors 92 are arranged to extend through the vessel 100 while being supported by the bushings 92a, respectively.
  • the six load side conductors 92 together constitute two sets of three-phase load side conductors.
  • the second switches 51 are connected with external transmission cables (not shown) through one set of load side conductors 92, and the third switches 52 are also connected with other external transmission cables through another set of three-phase load side conductors 92.
  • the first switches 50 are each provided with a swing electrode 50b which is caused to swing about a shaft 50a by means of an operation mechanism (not shown) through a metal link 80 and an insulation link 70.
  • the swing electrode 50b is constructed in such a manner that it takes, according to its swung position, a closing position at which an output electrode of a switching device (not shown) in the vacuum arc-extinguishing chamber 90 is connected with a corresponding stationary electrode protruded from an intermediate electrode 60 at a position thereof corresponding to the output electrode, a grounding position at which the swing electrode 50b is connected with a corresponding grounding conductor 100a, and a disconnecting position which is an intermediate position between the closing position and the grounding position, with the swing electrode 50b being separated or spaced from the stationary electrode and the grounding conductor 100a.
  • the second switches 51 are each provided with a swing electrode 51b which is caused to swing about a shaft 51a by means of an operation mechanism (not shown) through a metal link 80 and an insulation link 70.
  • the swing electrode 51b is constructed in such a manner that it takes, according to its swung position, a closing position at which a load side conductor 92 is connected with a corresponding stationary electrode protruded from an intermediate electrode 60 at a position thereof corresponding to the load side conductor 92, a grounding position in which the swing electrode 51 b is connected with a corresponding grounding conductor 100b, and a disconnecting position which is an intermediate position between the closing position and the grounding position, with the swing electrode 51b being separated or spaced from the stationary electrode and the grounding conductor 100b.
  • the third switches 52 are each provided with a swing electrode 52b which is caused to swing about a shaft 52a by means of an operation mechanism (not shown) through a metal link 80 and an insulation link 70.
  • the swing electrode 52b is constructed in such a manner that it takes, according to its swung position, a closing position at which a load side conductor 92 is connected with a corresponding stationary electrode protruded from an intermediate electrode 60 at a position thereof corresponding to the load side conductor 92, a grounding position in which the swing electrode 52b is connected with a corresponding grounding conductor 100c, and a disconnecting position which is an intermediate position between the closing position and the grounding position, with the swing electrode 52b being separated or spaced from the stationary electrode and the grounding conductor 100c.
  • the first, second and third switches 50, 51 and 52 composed of a main circuit switching portion, which serves to connect and disconnect between the bus side branch conductors 61 and the load side conductors 92, and a ground side switching portion for grounding the load side conductors 92, are accommodated in the vessel 100 together with the bus side branch conductors 61 and the load side conductors 92, thus achieving a reduction in size of the switch gear.
  • the conventional switch gear is applied to such a use in which electric power received from external buses is delivered to varying kinds of load equipment and the like by connecting the bus side branch conductors 61 with the external buses through the bushings 92b, and by connecting the load side conductors 92 with the transmission cables through the bushings 92a.
  • bushings with test terminals inserted therethrough are mounted on and passed through the wall surface of the vessel 100, and those ends of the test terminals which are extended into the interior of the vessel 100 are connected to the grounding conductors 100a, 100b and 100c. Using these test terminals, withstand voltage tests of the transmission cables are performed.
  • the SF6 gas is an emission regulation object for the prevention of global warming, and hence new issues in handling and management occur. This poses a further problem in that the costs will be increased at the times of production, maintenance and abandonment of the equipment.
  • JP 11 285 117 A discloses a switch gear according to the preamble of claim 1.
  • the present invention is intended to obviate the above-mentioned problems and has for its object to provide a switch gear which is capable of effectively using the space of a vessel, reducing the size and cost, and improving reliability and safety.
  • a switch gear according to the present invention is disclosed in claim 1.
  • Fig. 1 is a cross sectional side view schematically illustrating the construction of a switch gear according to embodiment 1 of the present invention. Here, a switch gear of a single phase is shown.
  • a vacuum vessel 1 includes a metallic tank 2, cylindrical insulating members 3a through 3d formed of insulating ceramics and each hermetically or air-tightly brazed or joined to an outer edge of a corresponding one of a plurality of openings formed through the opposite end surfaces of the tank 2, flanges 4a through 4d each configured in the shape of a bottomed cylinder and air-tightly secured to the corresponding insulating members 3a through 3d, and an insulating resin 5 which serves to mold the tank 2, the insulating members 3a through 3d and the flanges 4a through 4d into an integral unit.
  • the interior of the vacuum vessel 1 is maintained at a vacuum, and the outer surface of the insulating resin 5 is subjected to a conductive treatment and is covered with a conductive layer 19 which is connected to ground.
  • a main circuit contact side stationary conductor 10 which constitutes a main circuit conductor, is air-tightly secured to the vacuum vessel 1 in such a manner as to pass through the flange 4a and the insulating resin 5.
  • the stationary conductor 10 has one end extended into the interior of the vacuum vessel 1, which constitutes a stationary contact 8a of the main circuit contact 8, and the other end extended to the exterior of the vacuum vessel 1 and connected to a main bus 6.
  • a movable rod 14 is air-tightly mounted on the vacuum vessel 1 through the flange 4b and the bellows 16 in alignment with the stationary conductor 10 in such a manner that it is movable reciprocatingly along an axial direction of the stationary flange 10.
  • a main circuit contact side movable conductor 11 is fixedly secured through an insulating rod 15 to one end of the movable rod 14 which extends to the interior of the vacuum vessel 1 in alignment therewith.
  • the other end of the movable conductor 11 opposing the stationary contact 8a constitutes a movable contact 8b of the main circuit contact 8.
  • a ground contact side stationary conductor 12 which constitutes a main circuit conductor, is air-tightly secured to the vacuum vessel 1 in such a manner as to pass through the flange 4c and the insulating resin 5.
  • the stationary conductor 12 has one end extended into the interior of the vacuum vessel 1, which constitutes a stationary contact 9a of a ground contact 9, and the other end extended to the exterior of the vacuum vessel 1 and connected to a transmission cable 7.
  • a ground contact side movable conductor 13, which constitutes a ground conductor, is air-tightly mounted on the vacuum vessel 1 through the flange 4d and the bellows 17 in alignment with the stationary conductor 12 in such a manner that it is movable reciprocatingly along an axial direction of the stationary conductor 12.
  • One end of the movable conductor 13 extending into the interior of the vacuum vessel 1 constitutes a movable contact 9b of the ground contact 9.
  • the main-circuit-contcact-side movable conductor 11 and the ground contact side stationary conductor 12 are electrically connected with each other through a first flexible conductor 18 which is formed of a copper thin plate for example.
  • a portion of the insulating resin 5 is configured into a cylindrical shape so as to surround the ground contact side movable conductor 13 extending from the flange 4d, thereby to constitute an insulating barrier 20.
  • a ground/test terminal 21 is integrally molded into the insulating resin 5 with one end thereof extending into the insulating barrier 20. That' end of the ground/test terminal 21 which extends into the insulating barrier 20 is electrically connected with the movable contact 13 through a flexible conductor in the form of a second flexible conductor 22, which is formed of a copper thin plate for example.
  • a ground conductor 27 is connected with the other end of the ground/test terminal 21 (the ground/test terminal 21 is connected to ground).
  • the ground/test terminal 21 is arranged in a spaced-apart relation with respect to the conductive layer 19.
  • a movable rod 14 is connected with a main circuit contact switching mechanism 23 through a linkage (not shown).
  • the ground contact side movable conductor 13 is connected with a ground contact switching mechanism 24 through a linkage (not shown).
  • an insulating member in the form of an insulation rod 25 is disposed between the movable contact 13 and an operation rod 24a of the ground contact switching mechanism 24 so as to ensure electrical insulation between the ground contact side and the switching mechanism side.
  • the main circuit contact switching mechanism 23 and the ground contact switching mechanism 24 are housed in a grounded metallic frame 26.
  • a shield 29 is disposed so as to surround the main circuit contact 8, whereby the interior of the tank 2 is prevented from being contaminated by the metallic vapour generated by arcs in the tank 2.
  • the flanges 4a and 4c are joined to the tank 2 through the insulating members 3a and 3c, respectively, and the main circuit side stationary conductor 10 and the ground contact side stationary conductor 12 are adjusted in their positions and joined to the flanges 4a and 4c, respectively. Also, the main circuit side movable conductor 11 and the movable rod 14 are connected through the insulation rod 15. In addition, the flange 4b is joined to the tank 2 through the insulating member 3b. Then, the movable conductor 11 is inserted in the tank 2, and the movable conductor 11 thus inserted and the stationary conductor 12 are connected with each other by means of the first flexible conductor 18.
  • the assembly thus formed and the ground/test terminal 21 are disposed in position in a metal mold and then integrally molded with the insulating resin 5 to provide a molded body. Thereafter, the molded body is subjected to a conductive treatment so that a conductive layer 19 is formed on the surface of the insulating resin 5.
  • the ground contact side movable conductor 13 is inserted into the tank 2 through the flange 4d. After the position of the movable conductor 13 is adjusted, the movable conductors 13 is joined to the flange 4d through the bellows 17 in the vacuum atmosphere. Subsequently, the movable conductor 13 and the ground/test terminal 21 are connected with the second flexible conductor 22, thus providing the switch gear as shown in Fig. 1 .
  • the main circuit contact switching mechanism 23 is operated to move the movable rod 14 in a downward direction in Fig. 1 , whereby the movable contact 8b is brought into abutting engagement with the stationary contact 8a to close the main circuit contact 8.
  • the ground contact switching mechanism 24 is operated to cause the movable conductor 13 to travel in an upward direction in Fig. 1 , thus moving the movable contact 9b away from the stationary contact 9a to open the ground contact 9.
  • the main bus 6 is electrically connected with the transmission cable 7 through the stationary conductor 10, the movable conductor 11, the first flexible conductor 18 and the stationary conductor 12, as shown in (a) of Fig.
  • the main circuit contact switching mechanism 23 is operated to drive the movable rod 14 in the upward direction in Fig. 1 , whereby the movable contact 8b is caused to move away from the stationary contact 8a to open the main circuit contact 8.
  • the ground contact switching mechanism 24 is operated to move the movable conductor 13 in the downward direction in Fig. 1 , thereby placing the movable contact 9b into abutting engagement with the stationary contact 9a to close the ground contact 9.
  • the ground conductor 27 is detached from the ground/test terminal 21.
  • the main bus 6 is electrically separated or disconnected from the transmission cable 7, and the ground/test terminal 21 is electrically connected with the transmission cable 7 through the second flexible conductor 22, the movable conductor 13 and the stationary conductor 12, as shown in (b) of Fig. 2 . Thereafter, the power supply 28 is connected with the ground/test terminal 21, and a withstand voltage test of the transmission cable 7 is done.
  • the ground/test terminal 21 is arranged outside the vacuum vessel 1, so that the ground contact side movable conductor 13 and the ground/test terminal 21 are connected with each other by means of the second flexible conductor 22 outside the vacuum vessel 1.
  • the structure inside the vacuum vessel 1 is simplified, and hence reliability is improved, while at the same time achieving space-saving within the tank 2 and reducing the size and cost of the switch gear as well.
  • operations for connecting the ground contact side movable conductor 13 and the ground/test terminal 21 can be performed with ease and efficiency in a place outside of the vacuum vessel 1, productivity is improved, thus reducing the cost accordingly.
  • the flange 4d since the flange 4d is connected with the tank 2 through the insulating member 3d, the tank 2 takes an intermediate potential, and what is grounded inside the vacuum vessel 1 is the ground contact side movable conductor 13 alone, and hence the grounded portions can be minimized.
  • the flange 4d is connected with the tank 2 through the insulating member 3d, it is possible to achieve a construction which is effective to avoid ground faults without enlarging the size of the switch gear.
  • the movable contact 9b of the ground contact 9 can be arranged at a sufficient distance from the main circuit contact 8, thereby reducing the influence of arcs.
  • ground/test terminal 21 is molded integrally with the tank 2 by means of the insulating resin 5, and upon molding, the insulation barrier 20 is formed as a part of the insulating resin 5. With such an arrangement, assembling operations for the ground/test terminal 21 and the insulation barrier 20 become unnecessary, contributing a cost reduction accordingly.
  • the movable electrode 13 is at a ground potential in the normal operation, and a voltage is imposed to the movable electrode 13 only at the time of inspection for maintenance.
  • Such an arrangement does not at all deteriorate reliability and safety of the switch gear in comparison with the prior art technology in which the entire construction is arranged inside a vessel.
  • the insulation barrier 20 is formed in a cylindrical configuration
  • the shape of the insulation barrier is not limited to such a configuration, but instead may take any other configuration such as, for example, a hexagonal cylinder, a quadrangular cylinder, etc., as long as the connecting portions between the ground contact side movable conductor 13 and the second flexible conductor 22 are enclosed or surrounded by the insulation barrier.
  • Fig. 3 is a view diagrammatically illustrating essential portions of a switch gear according to embodiment 2 of the present invention, in which (a) of Fig. 3 is a top plan view, and (b) of Fig. 3 is a cross sectional side view.
  • a ground/test terminal 30 is formed at one end thereof with a ring-shaped connecting portion 30a, and is molded with an insulating resin 5.
  • the ground contact side movable conductor 13 is inserted through an opening of the connecting portion 30a.
  • a flexible conductor in the form of a second flexible conductor 40 is formed by bending a flexible copper thin plate of a short length into a U-shaped configuration, then bending the opposite side legs thereof outwardly, and further perforating the central portion of the U-shaped configuration with an opening.
  • the second flexible conductor 40 is mounted on the ground/test terminal 30 as follows.
  • the ground contact side movable conductor 13 is inserted through the opening in the second flexible conductor 40, and then the opposite side legs of the second flexible conductor 40 is brazed to the connecting portion 30a, and the second flexible conductor 40 is further brazed at its opening to the movable conductor 13 inserted therein.
  • the connecting portion 30a is arranged so as to surround the ground contact side movable conductor 13, so that the second flexible conductor 40 can be connected with the connecting portion 30a at any rotational position of the second flexible conductor 40 rotated around the central axis of the movable conductor 13.
  • the second flexible conductor 40 can be mounted to the connecting portion 30a while properly changing the arrangement of the second flexible conductor 40 according to the position of the frame 26. As a result, it is possible to ensure a proper insulation distance between the second flexible conductor 40 and the frame 26.
  • Fig. 4 is a cross sectional side view diagrammatically illustrating essential portions of a switch gear according to embodiment 3 of the present invention.
  • a ground/test terminal 31 is formed at one end thereof with a bottomed cylindrical connecting portion 31 a and is molded with an insulating resin 5.
  • the ground contact side movable conductor 13 is inserted through an opening which is formed through the bottom center of the connecting portion 31a.
  • An elastic member in the form of a ring 41 formed of insulating rubber is interposed between the inner peripheral wall surface of the connecting portion 31a and the outer peripheral wall surface of the flange 4d.
  • a space between the insulation rod 25 and the insulation barrier 20 is sealed up by an elastic (expandable and contractible) insulating member 42 formed of insulating rubber, as shown in Fig. 5 .
  • Fig. 6 is a view diagrammatically illustrating essential portions of a switch gear according to embodiment 5 of the present invention, and (a) of Fig. 6 is a top plan view thereof, and (b) of Fig. 6 is a cross sectional side view thereof.
  • a connection terminal 43 is formed into a U-shaped configuration, and is arranged perpendicular to the axial direction of the ground contact side movable conductor 13, with one side leg thereof being connected with the other end of the ground contact side movable conductor 13. Also, the second flexible conductor 22 is connected with the other side leg of the connection terminal 43.
  • a flanged or bent portion 44a is formed along the circumferential edge of an insulating member in the form of an insulation rod 44 so as to extend therefrom toward the insulation barrier 20.
  • the flanged portion 44a has an inner diameter greater than an outer diameter of the insulation barrier 20.
  • the insulation rod 44 is arranged in such a manner that upon closure of the ground contact 9, the flanged portion 44a overlaps the tip portion of the insulation barrier 20 in the axial direction of the ground contact side movable conductor 13.
  • the switch gear in a switch gear wherein a stationary side main circuit contact and a movable side main circuit contact are disposed in a vacuum vessel, and wherein main circuit conductors connected with the stationary side main circuit contact and the movable side main circuit contact, respectively, are arranged to pass through a wall of the vacuum vessel, the switch gear includes: a ground conductor arranged to pass through the wall of the vacuum vessel and having one end thereof movable toward and away from at least one of the main circuit conductors so as to contact therewith and separate therefrom; an operation mechanism connected through an insulating member with the other end of the ground conductor which extends from the vacuum vessel; and a ground/test terminal connected with the other end of the ground conductor extending from the vacuum vessel for relative displacement.
  • ground/test terminal and the other end of the ground conductor are connected with each other through a flexible conductor, and connection portions of the ground conductor and the flexible conductor are surrounded by a cylindrical insulating barrier.
  • the vacuum vessel comprises a metallic tank molded by an insulating resin, and the ground/test terminal is insulated from the tank and molded with the insulating resin integrally with the tank.
  • one end of the ground/test terminal is formed into a ring-shaped configuration so as to surround the ground conductor, and the flexible conductor is connected with the ring-shaped one end of the ground/test terminal. This serves to increase the flexibility in the arrangement of the flexible conductor, and ensure a sufficient insulation distance to a frame which accommodates the operation mechanism.
  • the ground conductor is air-tightly and elastically arranged to pass through a bottomed cylindrical flange which is attached to the tank in an insulating manner, and a ring-shaped insulating elastic member is interposed between the ring-shaped one end of the ground/test terminal and the flange.
  • a space between the insulating member and the insulating barrier is sealed up by an elastic insulating member, whereby a deterioration in the surface dielectric strength due to contamination of the insulating portions in the air and attachment of foreign matter can be suppressed.
  • connection terminal is arranged perpendicular to an axial direction of the ground conductor with one end thereof being connected with the other end of the ground terminal, and the flexible conductor is connected with the other end of the connection terminal.
  • a flanged portion is formed along a circumferential edge of the insulating member so as to extend therefrom toward the insulation barrier, and the flanged portion has an inner diameter greater than an outer diameter of the insulation barrier, and the insulating member is arranged in such a manner that when the ground conductor is in contact with the main circuit conductor, the flanged portion overlaps a tip portion of the insulation barrier in an axial direction of the ground conductor.
  • This arrangement serves to suppress a deterioration in the surface dielectric strength due to contamination of the insulating portions in the air and attachment of foreign matter.

Landscapes

  • High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
  • Gas-Insulated Switchgears (AREA)
  • Switch Cases, Indication, And Locking (AREA)

Abstract

Cette invention se rapporte à un appareillage de commutation fiable, de petite taille et peu coûteux, dont l'espace intérieur est entièrement utilisé. Cet appareillage comprend un récipient sous vide (1) qui contient un réservoir métallique (2) moulé en plastique isolant (5), dont une partie sert de barrière isolante (20) ayant la forme d'un cylindre renfermant un prolongement d'un conducteur de contact de terre mobile (13) partant du récipient sous vide (1). L'une des deux extrémités d'une borne de test/mise à la terre (21) s'étend jusque dans la barrière isolante (20) et l'autre extrémité est située à l'extérieur du plastique isolant. La borne de test/mise à la terre (21) et le conducteur de contact de terre mobile (13) sont connectés électriquement l'un à l'autre via un second conducteur souple (22) situé dans la barrière isolante (20).

Claims (7)

  1. Dispositif de commutation dans lequel un contact de circuit principal côté immobile (8a) et un contact de circuit principal côté mobile (8b) sont disposés dans un caisson à vide (1), et dans lequel des conducteurs de circuit principal (10, 12), respectivement reliés audit contact de circuit principal côté immobile (8a) et audit contact de circuit principal côté mobile (8b), sont agencés pour passer à travers une paroi dudit caisson à vide (1), comprenant
    un conducteur de masse (13) agencé pour passer à travers la paroi dudit caisson à vide (1) et ayant une extrémité de celui-ci mobile vers et loin d'au moins un desdits conducteurs de circuit principal (10, 12) de façon à entrer en contact avec celui-ci et distinct de celui-ci ;
    caractérisé comme comprenant
    un mécanisme de mise en oeuvre (24) relié par l'intermédiaire d'un élément d'isolation (25, 44) à l'autre extrémité dudit conducteur de masse (13) qui s'étend à partir dudit caisson à vide (1) ; et
    une borne de masse / test (21, 30, 31) reliée à l'autre extrémité dudit conducteur de masse (13) s'étendant à partir dudit caisson à vide (1) pour un déplacement relatif,
    dans lequel ledit caisson à vide (1) comprend un réservoir métallique (2) moulé par une résine isolante (5), ledit caisson à vide (1) étant relié à la masse par l'intermédiaire d'une couche conductrice (19), avec laquelle la résine isolante (5) est couverte ; et
    ladite borne de masse / test (21, 30, 31) est moulée avec ladite résine isolante (5) d'un seul tenant avec ledit réservoir (2) et isolée dudit caisson à vide (1) et dudit réservoir (2).
  2. Dispositif de commutation selon la revendication 1, caractérisé en ce qu'une extrémité de ladite borne de masse / test (21, 30, 31) et l'autre extrémité dudit conducteur de masse (13) sont reliées l'une à l'autre par un conducteur souple (22, 40), et des parties de connexion dudit conducteur de masse (13) et dudit conducteur souple (22, 40) sont entourées par une barrière isolante cylindrique (20).
  3. Dispositif de commutation selon la revendication 2, caractérisé en ce qu'une extrémité (30a, 31a) de ladite borne de masse / test (30, 31) est formée en une configuration annulaire de façon à entourer ledit conducteur de masse (13), et ledit conducteur souple (40) est relié à l'extrémité annulaire (30a, 31a) de ladite borne de masse / test (30, 31) .
  4. Dispositif de commutation selon la revendication 1, caractérisé en ce que ledit conducteur de masse (13) est agencé hermétiquement et élastiquement pour passer à travers une bride cylindrique avec fond (4d) qui est attachée audit réservoir (2) d'une manière isolante, et un élément élastique isolant annulaire (41) est interposé entre l'extrémité annulaire (31a) de ladite borne de masse / test (31) et ladite bride (4d).
  5. Dispositif de commutation selon la revendication 2, caractérisé en ce qu'un espace entre ledit élément isolant (25) et ladite barrière isolante (20) est scellé par un élément isolant élastique (42).
  6. Dispositif de commutation selon la revendication 2, caractérisé en ce qu'une borne de connexion en forme de U (43) est agencée perpendiculairement à une direction axiale dudit conducteur de masse (13), une extrémité de celui-ci étant reliée à l'autre extrémité de ladite borne de masse (13), et ledit conducteur souple (22) est relié à l'autre extrémité de ladite borne de connexion (43).
  7. Dispositif de commutation selon la revendication 2, caractérisé en ce qu'une partie à bride (44a) est formée le long d'un bord circonférentiel dudit élément isolant (44) de façon à s'étendre à partir de celui-ci vers ladite barrière isolante (20), et la partie à bride (44a) a un diamètre intérieur plus grand qu'un diamètre extérieur de ladite barrière isolante (20), et ledit élément isolant (44) est agencé de sorte que lorsque ledit conducteur de masse (13) est en contact avec ledit conducteur de circuit principal (10, 12), ladite partie à bride (44a) chevauche une partie de bout de ladite barrière isolante (20) dans une direction axiale dudit conducteur de masse (13).
EP00931702A 1999-11-10 2000-06-05 Appareillage de commutation Expired - Lifetime EP1152444B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP31938599A JP3577247B2 (ja) 1999-11-10 1999-11-10 スイッチギア
JP31938599 1999-11-10
PCT/JP2000/003646 WO2001035431A1 (fr) 1999-11-10 2000-06-05 Appareillage de commutation

Publications (3)

Publication Number Publication Date
EP1152444A1 EP1152444A1 (fr) 2001-11-07
EP1152444A4 EP1152444A4 (fr) 2006-08-16
EP1152444B1 true EP1152444B1 (fr) 2011-10-26

Family

ID=18109582

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00931702A Expired - Lifetime EP1152444B1 (fr) 1999-11-10 2000-06-05 Appareillage de commutation

Country Status (7)

Country Link
EP (1) EP1152444B1 (fr)
JP (1) JP3577247B2 (fr)
KR (1) KR100447050B1 (fr)
CN (1) CN1193394C (fr)
HK (1) HK1042161B (fr)
TW (1) TW480799B (fr)
WO (1) WO2001035431A1 (fr)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4537569B2 (ja) * 2000-04-24 2010-09-01 三菱電機株式会社 真空絶縁スイッチギヤ及びその製造方法
JP2003068175A (ja) * 2001-08-27 2003-03-07 Mitsubishi Electric Corp 電力用開閉装置
JP4247009B2 (ja) * 2002-03-06 2009-04-02 株式会社東芝 スイッチギヤ
JP3752598B2 (ja) * 2002-07-12 2006-03-08 株式会社日立製作所 真空スイッチギヤ
JP2004055150A (ja) * 2002-07-16 2004-02-19 Hitachi Ltd 真空スイッチギヤの製造方法
US6747234B2 (en) * 2002-07-23 2004-06-08 Maysteel Llc High voltage interrupter
JP4277198B2 (ja) * 2003-12-26 2009-06-10 株式会社日立製作所 真空スイッチギヤ
US7501598B2 (en) * 2006-05-31 2009-03-10 Thomas & Betts International, Inc. Connector system for an insulated switch with provision for grounding and visible break
WO2008006915A1 (fr) * 2006-07-13 2008-01-17 Ormazabal Y Cia, S.A. Équipement électrique encapsulé modulaire pour réseaux de distribution électrique
TW200841371A (en) 2007-02-14 2008-10-16 Hitachi Ltd Switchgear
JP5452555B2 (ja) * 2011-08-29 2014-03-26 株式会社日立製作所 スイッチギヤ及びスイッチギヤの操作方法
KR101147869B1 (ko) 2011-10-20 2012-05-24 (주)서전기전 아크 소호 진공밸브를 구비한 개폐장치
JP5905779B2 (ja) * 2012-06-13 2016-04-20 株式会社日立製作所 抵抗器及びそれを備えたスイッチギヤ
JP6382069B2 (ja) * 2014-10-30 2018-08-29 株式会社日立産機システム スイッチギヤ
EP4027365A1 (fr) 2021-01-07 2022-07-13 ABB Schweiz AG Appareil de commutation pour systèmes électriques
JP7313389B2 (ja) * 2021-02-09 2023-07-24 プライムプラネットエナジー＆ソリューションズ株式会社 電池パック

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD85798A (fr) *
JPH11113117A (ja) * 1997-10-03 1999-04-23 Hitachi Ltd スイッチギヤ
JP3683089B2 (ja) * 1997-11-27 2005-08-17 三菱電機株式会社 スイッチギヤ
TW405135B (en) * 1998-03-19 2000-09-11 Hitachi Ltd Vacuum insulated switch apparatus
JP3868104B2 (ja) * 1998-03-27 2007-01-17 三菱電機株式会社 スイッチギヤ

Also Published As

Publication number Publication date
CN1193394C (zh) 2005-03-16
EP1152444A1 (fr) 2001-11-07
WO2001035431A1 (fr) 2001-05-17
HK1042161A1 (en) 2002-08-02
HK1042161B (zh) 2005-09-02
KR20010101384A (ko) 2001-11-14
EP1152444A4 (fr) 2006-08-16
CN1337052A (zh) 2002-02-20
JP3577247B2 (ja) 2004-10-13
TW480799B (en) 2002-03-21
KR100447050B1 (ko) 2004-09-07
JP2001135207A (ja) 2001-05-18

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