EP1367681A1 - Vakuumschaltereinheit und schaltvorrichtung - Google Patents

Vakuumschaltereinheit und schaltvorrichtung Download PDF

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Publication number
EP1367681A1
EP1367681A1 EP02726482A EP02726482A EP1367681A1 EP 1367681 A1 EP1367681 A1 EP 1367681A1 EP 02726482 A EP02726482 A EP 02726482A EP 02726482 A EP02726482 A EP 02726482A EP 1367681 A1 EP1367681 A1 EP 1367681A1
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EP
European Patent Office
Prior art keywords
vacuum switch
electrode
contact terminal
circuit conductor
connection contact
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.)
Granted
Application number
EP02726482A
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English (en)
French (fr)
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EP1367681B2 (de
EP1367681A4 (de
EP1367681B1 (de
Inventor
Hiroshi Mitsubishi Denki KK OKAZAWA
Kouji Mitsubishi Denki Kabushiki Kaisha SANO
Masashi Mitsubishi Denki KK UENUSHI
Takao Mitsubishi Denki KK TSURIMOTO
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Mitsubishi Electric Corp
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Mitsubishi Electric Corp
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Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to DE60219769.4T priority Critical patent/DE60219769T3/de
Publication of EP1367681A1 publication Critical patent/EP1367681A1/de
Publication of EP1367681A4 publication Critical patent/EP1367681A4/de
Application granted granted Critical
Publication of EP1367681B1 publication Critical patent/EP1367681B1/de
Publication of EP1367681B2 publication Critical patent/EP1367681B2/de
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
    • H01H33/66—Vacuum switches
    • H01H33/666—Operating arrangements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
    • H01H33/66—Vacuum switches
    • 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
    • H01H33/6606—Terminal arrangements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/02—Details
    • H01H33/022—Details particular to three-phase circuit breakers
    • H01H2033/024—Details particular to three-phase circuit breakers with a triangular setup of circuit breakers
    • 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
    • H01H2033/6665—Details concerning the mounting or supporting of the individual vacuum bottles
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/02—Details
    • H01H33/022—Details particular to three-phase circuit breakers
    • 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

Definitions

  • the present invention relates to a vacuum switch unit constituting an essential part of switchgear (for example, enclosed type switchboard) applied to reception and distribution facilities and to the switchgear in which such a vacuum switch unit is used. More particularly, the invention relates to a construction of vacuum switch unit capable of improving structural reliability, improving assembling efficiency and achieving downsizing, and to a construction of switchgear in which the vacuum switch unit is used.
  • switchgear for example, enclosed type switchboard
  • circuit apparatus such as circuit breaker, disconnecting switch, a transformer, and bus bars, etc. are arranged for each functional unit in accordance with a receiving system or a connecting system, and in such a construction, a vacuum switch unit forms an essential part thereof.
  • Fig. 32 is a schematic view showing a construction of a conventional vacuum switch unit disclosed in, for example, the Japanese Patent Publication (unexamined) No. 18528/1989.
  • reference numeral 1 is a cylindrical vacuum switch (vacuum circuit breaker) forming a main body of the vacuum switch unit, numeral 1a is a stationary electrode of the vacuum switch 1, and numeral 1b is a movable electrode of the vacuum switch 1.
  • vacuum switch 1 a vacuum vessel charged with any gas is sometimes used as the vacuum switch 1, and this type of vacuum switch is also included in the vacuum switch hereinafter.
  • Numeral 200 is a stationary-electrode-side connection contact terminal of which one end side is fixedly arranged on the stationary electrode 1a of the vacuum switch 1.
  • Numeral 300 is a movable-electrode-side connection contact terminal of which one end side is fixedly arranged on the movable electrode 1b of the vacuum switch 1 through a shunt 300a.
  • the mentioned stationary-electrode-side connection contact terminal 200 and the movable-electrode-side connection contact terminal 300 both extending in a direction crossing a central axis (indicated by S in the drawing) of the vacuum switch 1 at right angles are formed in parallel to each other.
  • the vacuum switch 1, the stationary-electrode-side connection contact terminal 200, and the movable-electrode-side connection contact terminal 300 constitute a vacuum switch unit 400.
  • vacuum switch 1 itself or the vacuum switch unit 400 comprised of the vacuum switch 1, the stationary-electrode-side connection contact terminal 200 and the movable-electrode-side connection contact terminal 300 is frequently referred to as "vacuum valve" in the field of art.
  • Numerals 140 and 150 are insulators each for insulating and supporting the stationary-electrode-side connection contact terminal 200 and the movable-electrode-side connection contact terminal 300.
  • Numeral 160 is a mold frame that fixedly supports the other end sides of the stationary-electrode-side connection contact terminal 200 and the movable-electrode-side connection contact terminal 300 and is arranged so as to lighten a load on the vacuum switch unit 400.
  • Fig. 33 is an example showing a construction of switchgear (for example, enclosed type switchboard) in which the conventional vacuum switch unit shown in Fig. 32 is used.
  • switchgear for example, enclosed type switchboard
  • the vacuum switch 1, the stationary-electrode-side connection contact terminal 200, and the movable-electrode-side connection contact terminal 300 constitute one vacuum switch unit covering one phase (i.e., the conventional vacuum switch unit 400 shown in Fig. 32) .
  • a group or plural groups of vacuum switch units each covering three phases are arranged in the switchgear (for example, enclosed type switchboard) used in reception and distribution facilities.
  • a group of vacuum switch units each covering three phases are arranged vertically in the switchboard.
  • the main bus conductor 80 is connected to the movable-electrode-side connection contact terminal 300 of the upper vacuum switch unit 400 through a power supply side conductor 60.
  • main bus conductor 80 is connected to the stationary-electrode-side connection contact terminal 200 of the lower vacuum switch unit 400 through the power supply side conductor 60.
  • a load side cable 190 is connected to the stationary-electrode-side connection contact terminal 200 of the upper vacuum switch unit 400 through a load side conductor 70.
  • a load side cable 110 is connected to the movable-electrode-side connection contact terminal 300 of the lower vacuum switch unit 400 through the load side conductor 70.
  • the load side cables 110 and 190 are connected to a load apparatus. They are sometimes connected to another enclosed type switchboard.
  • Numeral 11 is a sensor such as current sensor or voltage sensor.
  • Numeral 500 is a housing for the switchgear (for example, enclosed type switchboard) with an opening/closing door 500a on the front thereof.
  • switchgear for example, enclosed type switchboard
  • Fig. 34 is a schematic view showing another example of the construction of the switchgear (for example, enclosed type switchboard) in which the conventional vacuum switch unit 400 shown in Fig. 33 is used.
  • the switchgear for example, enclosed type switchboard
  • the main bus conductor 80 is connected to the stationary-electrode-side connection contact terminal 200 arranged on the stationary electrode 1a (not shown in the drawing) of the vacuum switch 1 through the power supply side conductor 60.
  • the load side cable 190 is connected to the movable-electrode-side connection contact terminal 300 arranged on the movable electrode 1b (not shown) of the vacuum switch 1 through the load side conductor 70 and a long conductor 180.
  • Numeral 12 is an auxiliary machine composed of, for example, an instrument transformer, a switch control mechanism, and others.
  • the auxiliary machine 12 is arranged in an upper portion or a lower portion in the switchboard conforming to the position of the vacuum switch 1 (i.e., the position of the vacuum switch unit 400) in the switchgear (enclosed type switchboard) 500.
  • the auxiliary machine 12 is connected to the movable-electrode-side connection contact terminal 300 of the vacuum switch unit 400 through the long conductor 180 (there is a case of using a part of the load side cable 190 as the long conductor 180) or a cable 170.
  • numeral 130 is a support member for supporting the load side cable 190 and others.
  • a switch mechanism for driving the movable electrode 1b of the vacuum switch 1, a mechanism for opening the vacuum switch unit 400 from the main bus conductor 80, and so on are omitted in the switchgear (enclosed type switchboard) shown in Figs. 33 and 34.
  • the stationary-electrode-side connection contact terminal 200 and the movable-electrode-side connection contact terminal 300 forming a pair in order to form a current path to another circuit apparatus is arranged extending in a direction crossing the central axis (indicated by S in the drawing) of the vacuum switch 1 at right angles.
  • any force in the direction indicated by the arrows A in Fig. 32 acts thereon. Accordingly, a heavy burden due to bending load generated at portions indicated with B and C in the drawing is imposed on the stationary electrode 1a and the movable electrode 1b arranged in the direction of the central axis of the vacuum switch 1. This results in lowering reliability on mechanical strength.
  • Fig. 35 is a schematic view showing a condition that the conventional vacuum switch unit is arranged in the housing 500 of the enclosed type switchboard.
  • the vacuum switches 1 and the stationary-electrode-side connection contact terminals 200 or the movable-electrode-side connection contact terminals 300 require a space insulation distance L 1 and an earth insulation distance L 2 in the housing 500 of the switchgear (enclosed type switchboard). Therefore, the housing 500 cannot be smaller than a certain size; hence a problem exists in that it is difficult to downsize the switchgear (enclosed type switchboard).
  • the main bus conductor 80 is generally arranged at the rear portion of the vacuum switch unit 400. Moreover, a conductor connected to a power supply side or load side cable or another switchboard is arranged at the further rear portion of the main bus conductor 80.
  • the main bus conductor 80 arranged at the rear portion of the vacuum switch 1 (i.e., at the rear portion of the vacuum switch unit 400) requires a long power supply side conductor 60 between the main bus conductor 80 and the vacuum switch 1. Furthermore, since the load side/power supply side cables 170, 190 and 110 or other cables connected to another switchboard are arranged at the rear portion of the main bus conductor 80, it is necessary to use a long conductor as those cables.
  • the stationary electrode 1a and the movable electrode 1b of the vacuum switch 1 have less mechanical strength against transversal external force as compared with their mechanical strength against longitudinal external force.
  • the stationary-electrode-side connection contact terminal 200 and the movable-electrode-side connection contact terminals 300 are both arranged in a direction crossing the central axis S of the vacuum switch 1 at right angles. Therefore the stationary electrode 1a and the movable electrode 1b are liable to receive transversal external force. A further problem exists in that structural reliability of the vacuum switch 1 is lowered.
  • the present invention was made to solve the above-discussed problems and has an object of providing a vacuum switch capable of improving structural reliability of the vacuum switch in mounting the vacuum switch on the switchgear (for example, enclosed type switchboard) and downsizing the switchgear (for example, enclosed type switchboard).
  • a vacuum switch capable of improving structural reliability of the vacuum switch in mounting the vacuum switch on the switchgear (for example, enclosed type switchboard) and downsizing the switchgear (for example, enclosed type switchboard).
  • Another object of the invention is to provide a switchgear capable of reducing the amount of material, number of parts, and assembling cost and so on, in addition to the advantage of miniaturization and lightening.
  • a vacuum switch unit includes:
  • any force that acts at the time of connecting the vacuum switch unit to another circuit apparatus applies in a direction parallel to the central axis of the vacuum switch.
  • the other end side having the contact connection part of either the stationary-electrode-side connection contact terminal or the movable-electrode-side connection contact terminal is preferably formed on the central axis of the vacuum switch.
  • the other end side of the stationary-electrode-side connection contact terminal having the contact connection part is formed on the central axis of the vacuum switch, and the other end side of the movable-electrode-side connection contact terminal having the contact connection part is formed so that the other end side extends substantially in parallel to the central axis of the vacuum switch toward the stationary-electrode-side connection contact terminal.
  • the vacuum switch is further downsized in the direction of central axis, it is possible to achieve a reliable and compact vacuum tube switch unit.
  • the vacuum switch, the stationary-electrode-side connection contact terminal and the movable-electrode-side connection contact terminal are preferably formed integrally into one body of an organic insulating material.
  • switch unit members each covering three phases are preferably formed integrally into one body of an organic insulating material.
  • a switchgear according to the invention includes:
  • the vacuum switch unit is preferably comprised of a vacuum switch including a substantially cylindrical vacuum switch, a stationary-electrode-side connection contact terminal of which one end is fixed to a stationary electrode of the vacuum switch and the other end side is provided with a contact connection part that comes in contact with and is connected to the first circuit conductor, the stationary-electrode-side connection contact terminal being formed in parallel to a central axis of the vacuum switch, and a movable-electrode-side connection contact terminal of which one end is fixed to a movable electrode of the vacuum switch and the other end side is provided with a contact connection part that comes in contact with and is connected to the second circuit conductor, the movable-electrode-side connection contact terminal being formed in parallel to the central axis of the vacuum switch.
  • the stationary-electrode-side connection contact terminal is formed on the central axis of the vacuum switch, any bending stress is scarcely applied to the stationary electrode at the time of assembling the vacuum switch unit. Furthermore, reliability of the vacuum switch unit is improved and the vacuum switch unit is downsized in the direction of central axis and, as a result, the switchgear is further improved in reliability and downsized.
  • the first circuit conductor is preferably disposed horizontally
  • the vacuum switch unit be arranged so that the central axis of the vacuum switch thereof extends vertically crossing the first circuit conductor at right angles
  • the second circuit conductor is formed so that an end thereof extends toward the bottom side.
  • the vacuum switch unit is arranged vertically, reliability is improved and the const is reduced, it is possible to obtain downsized switchgear diminished in depth. Furthermore, the cable connected to the second circuit conductor is easily led in from the bottom side of the switchgear.
  • the first circuit conductor is preferably disposed perpendicularly, the vacuum switch unit be arranged so that the central axis of the vacuum switch thereof extends horizontally crossing the first circuit conductor at right angles, and the second circuit conductor is formed so that an end thereof extends toward the bottom side.
  • the first circuit conductor is preferably disposed horizontally
  • the vacuum switch unit be arranged so that the central axis of the vacuum switch thereof is arranged in parallel to the first circuit conductor
  • the second circuit conductor is formed so that an end thereof extends toward the bottom side.
  • the switchgear is further downsized in height.
  • the first circuit conductor is preferably disposed horizontally
  • the vacuum switch unit is arranged so that the central axis of the vacuum switch thereof extends vertically crossing the first circuit conductor at right angles
  • the second circuit conductor is formed so that an end thereof extends toward the top side crossing the first circuit conductor with a predetermined distance therefrom.
  • the first circuit conductor is preferably disposed perpendicularly
  • the vacuum switch unit is arranged so that the central axis of the vacuum switch thereof extends horizontally crossing the first circuit conductor at right angles
  • the second circuit conductor is formed so that an end thereof extends toward the backside crossing the first circuit conductor with a predetermined distance therefrom.
  • the vacuum switch unit is preferably constructed so that either a combination of the stationary-electrode-side connection contact terminal and the first circuit conductor or a combination of the movable-electrode-side connection contact terminal and the second circuit conductor is formed into a U-shape at a portion proximate to the mentioned vacuum switch.
  • a sensor or an auxiliary machine is preferably arranged in the vicinity of the stationary-electrode-side connection contact terminal or the movable-electrode-side connection contact terminal.
  • the switchgear preferably includes a plurality of vacuum switch units, and the plural vacuum switch units are arranged and mounted side by side forming a straight line.
  • the switchgear preferably includes three vacuum switch units, and the three vacuum switch units are arranged and mounted so that the central axes of the vacuum switches of the three vacuum switch units are respectively located on the vertexes of a triangle.
  • the various parts are formed into one or plural components, not only it is easy to manage the parts but also it is easy to assemble the parts inside the switchgear. Furthermore, the parts are integrally composed of an organic insulating material, it possible to improve the insulating property and downsize the switchgear.
  • Fig. 1 is a schematic view showing a construction of a vacuum switch unit according to Embodiment 1 of the present invention
  • Fig. 2 is a schematic view showing a construction example different from Fig. 1 of the vacuum switch unit according to. Embodiment 1 of the invention
  • Fig. 3 is a schematic view showing a construction example of vacuum switch unit still different from Figs. 1 and 2 according to Embodiment 1 of the invention.
  • Fig. 4 is a side view showing the construction of the vacuum switch unit shown in Fig. 3 (i.e., a view of the vacuum switch unit shown in Fig. 3 taken from the rear portion (right side in Fig. 3) on the central axis), and Fig. 5 is a view showing a construction of a modification of the vacuum switch unit shown in Figs. 3 and 4.
  • numeral 1 is a vacuum switch where a stationary electrode 1a and a movable electrode 1b are arranged on the central axis opposite to each other, and numerals 21 and 31 are a stationary-electrode-side connection contact terminal and a movable-electrode-side connection contact terminal forming a pair, and which are respectively formed of L-shaped plates of which one end sides are connected and fixed to respectively the stationary electrode 1a and the movable electrode 1b of the vacuum switch 1.
  • connection contact part 21a on the other end side of the stationary-electrode-side connection contact terminal 21 and a connection contact part 31a on the other end side of the movable-electrode-side connection contact terminal 31 are arranged in parallel to the central axis (indicated by S) of the cylindrical vacuum switch 1 and come near to each other.
  • connection contact part 21a on the other end side of the stationary-electrode-side connection contact terminal 21, of which one end is connected to the stationary electrode 1a is parallel to the central axis S of the cylindrical vacuum switch 1 and is formed into an L-shape extending toward the movable electrode 1b
  • connection contact part 31a on the other end side of the movable-electrode-side connection contact terminal 31, of which one end is connected to the movable electrode 1b is parallel to the central axis S of the cylindrical vacuum switch 1 and is formed into an L-shape extending toward the stationary electrode 1a.
  • connection contact part 21a and the connection contact part 31a are arranged symmetrical putting the central axis of the vacuum switch 1 between them.
  • Numeral 41 is a vacuum switch unit comprised of the vacuum switch 1, the stationary-electrode-side connection contact terminal 21, and the movable-electrode-side connection contact terminal 31.
  • connection contact parts 21a and 31a formed on the other end sides of the stationary-electrode-side connection contact terminal 21 and the movable-electrode-side connection contact terminal 31 are arranged in parallel to the central axis S of the vacuum switch 1, any force that acts at the time of connecting the vacuum switch unit to another circuit apparatus is applied in a direction parallel to the central axis S of the vacuum switch 1.
  • connection contact parts 21a and 31a formed on the other end sides of the stationary-electrode-side connection contact terminal 21 and the movable-electrode-side connection contact terminal 31 are arranged in parallel to the central axis of the vacuum switch 1 and adjacent to each other, it is also preferable that a vacuum switch unit 42 is constructed so that the connection contact parts 12a and 31a are arranged in parallel to the central axis S of the vacuum switch 1 extending away from each other as shown in Fig. 2. In this construction also the same advantages as described above are obtained.
  • a vacuum switch unit 43 is constructed so that the connection contact part 22a on the other end side of the stationary-electrode-side connection contact terminal 22 connected to the stationary electrode 1a is arranged in parallel to the central axis S in a manner of extending away (i.e., a direction extending away from the movable electrode 1b and the connection contact part 31a on the other end side of the movable side connection contact terminal 31 connected to the movable electrode 1b is arranged in parallel to the central axis S and in a direction coming near the stationary electrode 1a in the same manner as the case of Fig. 2.
  • this construction also the same advantages as described above are obtained.
  • a vacuum switch unit 44 constructed so that the stationary side connection contact part 22 and the movable side connection contact part 31 are arranged with a tilt of a predetermined angle between them putting the central axis of the vacuum switch 1 between them.
  • the vacuum switch unit comprising an essential part of the switchgear (enclosed type switchboard) and in which a pair of connection contact terminals forming a current path to another circuit apparatus are arranged at the ends on the stationary-electrode-side and the movable-electrode-side respectively, since both of the connection contact terminals are arranged so that their connection contact parts are substantially parallel to the central axis of the vacuum valve, it is possible to provide a vacuum switch unit that makes it possible to improve reliability on mechanical strength and reduce the cost.
  • Fig. 6 is a schematic view showing a construction of a vacuum switch unit according to Embodiment 2 of the invention.
  • numeral 1 is a vacuum switch in which a stationary electrode 1a (not shown in the drawing) and a movable electrode 1b are arranged on the central axis S and face each other.
  • Numeral 23 is a cylindrical stationary-electrode-side connection contact terminal of which one end side is connected and fixed to the stationary electrode 1a of the vacuum switch 1, and a connection contact part 23a on the other end side is arranged on the central axis S of the vacuum switch 1.
  • Numeral 33 is a movable-electrode-side connection contact terminal composed of a plate part 33a of which one end side is connected and fixed to the movable electrode 1b and a cylindrical connection contact part 33b connected and fixed to this plate part 33a and arranged in parallel to the central axis S of the vacuum switch 1.
  • connection contact part 33b of the movable-electrode-side connection contact terminal 33 connected and fixed to the movable electrode 1b side is arranged in parallel to the central axis S of the vacuum switch 1 and, furthermore, the connection contact part 23a of the stationary-electrode-side connection contact terminal 23 connected and fixed to the stationary electrode 1a is arranged on the central axis S of the vacuum switch 1. Therefore bending stress is scarcely applied to the portion where the stationary electrode 1a and the stationary-electrode-side connection contact terminal 23 are connected, and reliability on mechanical strength is further improved.
  • Fig. 7 is a sectional view showing a construction of a vacuum switch unit according to Embodiment 3 of the invention.
  • Fig. 8 is a sectional view showing a construction of the vacuum switch unit different from Fig. 7 according to Embodiment 3 of the invention.
  • numeral 51 is an injection-molded member composed an organic insulating material such as resin and formed into one body so as to cover or coat the vacuum switch unit 41 of the construction shown in Fig. 1 (Embodiment 1), and the connection contact part 21a formed on the other end side of the stationary-electrode-side connection contact terminal 21 and the connection contact part 31a formed on the other end side of the movable-electrode-side connection contact terminal 31 are exposed on the surface.
  • the injection-molded member 51 composed of an organic insulating material such as resin is formed into one body so as to cover the vacuum switch unit 41, it is possible to shorten the space insulation distance L 1 shown in Fig. 35 to a great extent and downsize the enclosed type switchboard, and the injection-molded member 51 tightly fits on the surface of the vacuum switch unit 41. As a result, it is possible to shorten the leakage distance and downsize the vacuum switch unit 41 itself.
  • connection contact terminals are formed into one body composed of an organic insulating material so as to cover the vacuum switch unit according to Embodiment 1 or Embodiment 2, it is possible to provide a vacuum switch unit that makes it possible to shorten the space insulation distance to a great degree and downsize the switchgear (enclosed type switchboard) in which the vacuum switch unit is accommodated.
  • Fig. 9 is a partially sectional perspective view showing a construction of a vacuum switch unit integrally covering three phases according to Embodiment 4 of the invention.
  • Fig. 10 is a partially sectional perspective view showing a construction of the vacuum switch unit different from Fig. 9 integrally covering three phases according to Embodiment 4 of the invention.
  • numeral 53 is an injection-molded member composed of an organic insulating material such as resin or the like, and the injection-molded member 53 is formed into one body so as to integrally cover the three vacuum switch units 41 (i.e., the vacuum switch shown in Fig. 1) disposed side by side for integrally covering three phases, and the connection contact part 21a of the stationary-electrode-side connection contact terminal 21 and the connection contact part 31a of the movable-electrode-side connection contact terminal 31 are exposed on the surface.
  • the three vacuum switch units 41 i.e., the vacuum switch shown in Fig. 1
  • the injection-molded member 53 composed of an organic insulating material such as resin is formed into one body so as to cover the three vacuum switch units 41 thereby integrally covering three phases
  • the vacuum switch units 41 and the switchgear for example, enclosed type switchgear
  • the vacuum switch units 41 are accommodated, are downsized and, furthermore, it is possible to improve efficiency in assembling in the same manner as in the foregoing Embodiment 3.
  • each connection contact part of the stationary side or movable side connection contact terminal of the vacuum switch unit is arranged on the central axis of the vacuum switch 1 or in parallel to the central axis, it is a matter of course that arranging each connection contact part at a very small angle with the central axis is applicable, provided that the generated bending stress does not affect the mechanical strength.
  • atmosphere in the switchgear for example, enclosed type switchgear
  • the vacuum switch unit in which the vacuum switch unit is accommodated
  • atmosphere in the switchgear for example, enclosed type switchgear
  • the vacuum switch units for integrally covering three phases are formed into one body composed of an organic insulating material such as resin, it is possible to provide a vacuum switch unit integrally covering three phases that makes it possible to improve efficiency in assembling.
  • Figs. 11 (a) and (b) are schematic views each showing an essential part (i.e., portion on which a vacuum switch unit is mounted) of switchgear (for example, enclosed type switchboard) according to Embodiment 5.
  • switchgear for example, enclosed type switchboard
  • numeral 1 is a cylindrical vacuum switch.
  • This vacuum switch 1 is provided with a stationary electrode 1a fixed to an internal stationary contact (i.e., stationary electrode) at one end thereof on the central axis S of this vacuum switch 1 and a movable electrode 1b fixed to a movable contact (i.e., a movable electrode) at the other end thereof.
  • Numeral 24 is a stationary-electrode-side connection contact terminal of which one end is fixed to the stationary electrode 1a
  • numeral 34 is a movable-electrode-side connection contact terminal of which one end is fixed to the movable electrode 1b through a shunt 34a of a flexible copper strand.
  • This cylindrical vacuum switch 1 is mounted so that the stationary electrode 1a and the movable electrode 1b extend vertically (i.e., in the direction perpendicular to the plane where the switchgear is mounted) and the cylindrical vacuum switch 1 can move to a predetermined position in the foregoing vertical direction by an opening mechanism not shown.
  • the movable electrode 1b is driven vertically by a switch mechanism (not shown), thereby opening or closing the contact (electrode) in the cylindrical vacuum switch 1.
  • the movable-electrode-side connection contact terminal 34 is fixed to the movable electrode 1b through the shunt 34a, and therefore the movable electrode 1b can move vertically regardless of the movable-electrode-side connection contact terminal 34 at the time of opening and closing the contact (electrode).
  • the stationary-electrode-side connection contact terminal 24 is composed of a conductive material such as copper plate, and the other end thereof extends in the same direction as the central axis S of the vacuum switch 1 passing through the stationary electrode 1a and the movable electrode 1b and slides coming in contact with a first circuit conductor 61 (for example, power supply side conductor).
  • a first circuit conductor 61 for example, power supply side conductor
  • the movable-electrode-side connection contact terminal 34 is also composed of a conductive material such as copper plate, and the other end thereof is bent upward so as to be substantially parallel to the central axis S at a portion proximate to the cylindrical vacuum switch 1.
  • a top end thereof is disposed to slide coming in contact with a second circuit conductor 71 (for example, load side conductor).
  • a second circuit conductor 71 for example, load side conductor
  • an elastic contact member 34b is arranged at the end of the movable-electrode-side connection contact terminal 34 in some cases.
  • Fig. 11 (a) shows a state that the vacuum switch unit 46 is separated from the first circuit conductor (for example, power supply side conductor) 61 and the second circuit conductor 71 (for example, load side conductor), and Fig. 11(b) shows state that the vacuum switch unit 46 moves to a predetermined position by the opening mechanism. not shown, whereby the connection contact terminals 24 and 34 of the vacuum switch unit 46 slide coming in contact with the first circuit conductor 61 and the second circuit conductor 71 respectively.
  • Either the stationary-electrode-side connection contact terminal 24 or the movable-electrode-side connection contact terminal 34 is connected to a power supply circuit, and the remaining terminal is connected to a load circuit.
  • the power supply side and the load side are reversed in some cases.
  • the movable-electrode-side connection contact terminal 34 is bent upward with a round portion R so as to be substantially parallel to the central axis S at a portion proximate to the cylindrical vacuum switch 1, it is also preferable that the movable-electrode-side connection contact terminal 34 is simply bent into an L-shape without the round portion R as a matter of course.
  • This round portion R makes it possible to relieve stress on the portion in which the movable-electrode-side connection contact terminal 34 is mounted on the movable electrode 1b
  • Figs. 12 (a) and (b) shows a case that a current transformer 13 is disposed near the bent portion of the movable-electrode-side connection contact terminal 34 in the vacuum switch unit portion of the switchgear shown in Fig. 11.
  • the current transformer 13 is arranged effectively utilizing a space in the bent portion of the movable-electrode-side connection contact terminal 34, and this contributes to downsizing of the switchgear.
  • Fig. 13 is a schematic view showing a construction of an essential part (portion on which a vacuum switch unit is mounted) of switchgear according to Embodiment 6.
  • numeral 1 is a cylindrical vacuum switch
  • numeral 1a is a stationary electrode
  • numeral 1b is a movable electrode
  • numeral 24 is a stationary-electrode-side connection contact terminal
  • numeral 34 is a movable-electrode-side connection contact terminal
  • numeral 34a is a shunt
  • numeral 34b is a contact member.
  • This embodiment differs from the switchgear according to the foregoing Embodiment 5 in the aspect that disposing the power supply side conductor 61 shown in Fig. 11 is omitted and the stationary-electrode-side connection contact terminal 24 directly slides coming in contact with a main bus conductor 80.
  • the main bus conductor 80 is U-shaped in section, and is arranged so that the stationary-electrode-side connection contact terminal 24 of the vacuum switch unit 46 slides coming in contact with an substantially U-shaped groove of the main bus conductor 80 when the vacuum switch unit 46 moves to a predetermined position by an opening mechanism not shown.
  • the main bus conductor 80 is arranged at a portion proximate to the vacuum switch unit 46 without any other mechanism (for example, the power supply side conductor 61 in Fig. 12) between the main bus conductor 80 and the stationary-electrode-side connection contact terminal 24 extending in the same direction as the central axis S passing through the stationary electrode 1a and the movable electrode 1b whereby the stationary-electrode-side connection contact terminal 24 slides vertically coming in contact with the main bus conductor 80 arranged horizontally (i.e., in the direction parallel to the plane on which the switchgear is mounted).
  • Fig. 14 is a schematic view showing a construction of an essential part (portion on which a vacuum switch unit is mounted) of switchgear according to Embodiment 7.
  • the movable-electrode-side connection contact terminal 34 is bent upward forming an L-shape to be substantially parallel to the central axis S at a portion proximate to the cylindrical vacuum switch 1, and an end thereof is arranged to slide coming in contact with a junction 71a of the second circuit conductor (for example, load side conductor) 71.
  • the second circuit conductor for example, load side conductor
  • the second circuit conductor 71 is bent downward from the sliding contact portion (i.e., the junction 71a) in a direction substantially parallel to the central axis S of the cylindrical vacuum switch 1.
  • the movable-electrode-side connection contact terminal 34 and the second circuit conductor 71 are formed into a U-shape (inverted U-shaped configuration) at a portion proximate to the vacuum switch 1.
  • the vacuum switch unit is arranged so that the central axis of the vacuum switch extends vertically.
  • the stationary-electrode-side connection contact terminal fixed to the stationary electrode of the vacuum switch comes in contact with and is connected to the power supply side circuit conductor (for example, the main bus conductor) arranged horizontally
  • the movable-electrode-side connection contact terminal, of which one end is fixed to the movable electrode of the vacuum switch is bent into an L-shape at a portion proximate to the cylindrical switch so as to be parallel to the central axis of the vacuum switch, whereby the end thereof comes in contact with and is connected to the U-shaped junction of the load side circuit conductor, and this load side circuit conductor is arranged in a direction parallel to the central axis of the vacuum switch (i.e., vertically). Therefore, it is possible to greatly relieve the bending stress on the stationary electrode and the movable electrode of the vacuum switch and downsize the switchgear in depth. As a result, it is possible to greatly relieve the
  • the movable-electrode-side connection contact terminal 34 and the second circuit conductor (for example, load side conductor) 71 are formed into a U-shape (inverted U-shaped configuration) at a portion proximate to the vacuum switch 1
  • the stationary-electrode-side connection contact terminal 24 and the first circuit conductor (for example, power supply side conductor) 61 are formed into a U-shape (inverted U-shaped configuration) at a portion proximate to the vacuum switch 1.
  • the same advantages are obtained.
  • Fig. 15 is a schematic view showing a construction of an essential part (portion on which a vacuum switch unit is mounted) of switchgear according to Embodiment 8.
  • This embodiment differs from the foregoing Embodiment 6 (Fig. 13) or Embodiment 7 (Fig. 14) in the aspect that a sensor 11 or an auxiliary machine 12 is arranged in the vicinity of the second circuit conductor (load side conductor) 71.
  • the switchgear is provided with the movable-electrode-side connection contact terminal 33 fixed to the cylindrical vacuum switch 1 and the second circuit conductor 71 that comes in contact with and is connected to the movable-electrode-side connection contact terminal 33, and in which the sensor 11 such as current sensor or voltage sensor or the auxiliary machine 12 such as zero-phase current transformer is arranged in the vicinity of the second circuit conductor 71.
  • the senor 11 or the auxiliary machine 12 is arranged in the vicinity of the main bus conductor 80 or the stationary-electrode-side connection contact terminal 24.
  • an auxiliary machine such as instrument voltage transformer or instrument current transformer is arranged likewise.
  • the vacuum switch unit shown in the foregoing Embodiment 2 (i.e., the vacuum switch unit 45) is used as the vacuum switch unit in the switchgear shown in Fig. 15, the invention is not limited to thereto, and it is also preferable to use the vacuum switch unit 46 constructed as shown in the foregoing Embodiment 6 (Fig. 13) or Embodiment 7 (Fig. 14) as a matter of course.
  • Fig. 16 is a schematic view showing a construction of an essential part (portion on which vacuum switch units are mounted) of switchgear according to Embodiment 9.
  • Fig. 16 shows a construction in which the vacuum switch unit 46 constructed as shown in the foregoing Embodiment 6 (Fig. 13) or Embodiment 7 (Fig. 14) is used as the vacuum switch unit.
  • each of the three vacuum switch units 46 covering three phases is arranged so that the stationary-electrode-side connection contact terminal 24 arranged on the top side slides coming in contact with the main bus conductor 80, and the movable-electrode-side connection contact terminal 34 arranged on the bottom side slides coming in contact with the second circuit conductor 71 when the vacuum switch unit 46 is mounted on a predetermined position by an opening mechanism not shown.
  • the three vacuum switch units 46 are arranged and mounted close to each other forming a horizontal straight line as shown in Fig. 16.
  • the second circuit conductor (load side circuit conductor) is arranged downward, it is easy to lead in the cable located on the load side from the bottom of the switchgear.
  • the vacuum switch units used in this embodiment are not limited to the vacuum switch unit 46 constructed as shown in the foregoing Embodiment 6 (Fig. 13) or Embodiment 7 (Fig. 14), and it is also preferable to use, for example, the vacuum switch unit 45 shown in the foregoing Embodiment 2 (Fig. 6) as a matter of course.
  • Fig. 17 is a schematic view showing a construction of an essential part (portion where vacuum switch units are mounted) of switchgear according to Embodiment 10.
  • plural (three) vacuum switch units are arranged so that the central axes of the vacuum switches are positioned on the vertexes of a triangle respectively when taken from above as shown in Fig. 17.
  • Fig. 17 shows a construction in which the vacuum switch unit 46 shown in the foregoing Embodiment 6 (Fig. 13) or Embodiment 7 (Fig. 14) is used as the vacuum switch units.
  • the vacuum switch units 46 are arranged so that the stationary-electrode-side connection contact terminal 24 arranged on the top side of each vacuum switch unit 46 slides coming in contact with the main bus conductor 80, and the movable-electrode-side connection contact terminal 34 arranged on the bottom side slides coming in contact with the second circuit conductor 71.
  • Each of the vacuum switch units 46 has the same construction as shown in Fig. 14.
  • the three vacuum switch units 46 are arranged covering three phases with their central axes positioned on the vertexes of a triangle respectively.
  • the second circuit conductor (the load side circuit conductor) is arranged downward in the same manner as in the foregoing Embodiment 9, it is easy to lead in the cable located on the load side from the bottom of the switchgear.
  • the vacuum switch units used in this embodiment are not limited to the vacuum switch unit 46 constructed as shown in the foregoing Embodiment 6 (Fig. 13) or Embodiment 7 (Fig. 14), and it is also preferable to use, for example, the vacuum switch unit 45 shown in the foregoing Embodiment 2 (Fig. 6) as a matter of course.
  • Fig. 18 is a schematic view showing a construction of an essential part (portion on which a vacuum switch unit is mounted) of switchgear according to Embodiment 11.
  • numeral 19a is a component that includes the vacuum switch 1, stationary-electrode-side connection contact terminal (23 or 24) and the movable-electrode-side connection contact terminal (33 or 34) and is formed integrally into one unit composed of an organic insulating material (not shown) by injection molding.
  • Numeral 19b is a component that includes the sliding contact portion, where the stationary-electrode-side connection contact terminal (23 or 24) slides coming in contact with the main bus conductor 80, and is formed integrally into one unit composed of an organic insulating material by injection molding.
  • Numeral 19c is a component that includes the U-shaped portion (inverted U-shaped portion) of the second circuit conductor 71 shown in Fig. 14 and is formed integrally into one unit of an organic insulating material by injection molding.
  • Numerals 19d and 19e are components that include the second circuit conductor 71 and the sensor 11 or the auxiliary machine 12 and are respectively formed integrally into one unit by injection molding.
  • Numeral 19f is a component that includes the remaining portion of the second circuit conductor 71 and a part of another conductor 110 and is formed integrally into one unit by injection molding.
  • combining the various parts into several components further makes it easy to manage the parts, and this performs the advantage of making it easy to assemble the parts inside the switchgear.
  • the vacuum switches of an organic insulating material disposed in the air is described in the foregoing constructions, the invention is also applicable to a construction used in gas atmosphere, provided that there is no possibility that the organic insulating material is not deteriorated in the gas.
  • Figs. 19 (a) and (b) are schematic views each showing a construction of an essential part (portion on which a vacuum switch unit is mounted) of switchgear according to Embodiment 12.
  • numeral 1 is a cylindrical vacuum.
  • This vacuum switch 1 is provided with a stationary electrode 1a connected to an internal stationary contact (i.e., stationary electrode) at an end of the central axis S of this vacuum switch 1 and a movable electrode 1b connected to a movable contact point (i.e., movable electrode) at the other end thereof.
  • Numeral 24 is a stationary-electrode-side connection contact terminal of which one end is fixed to the stationary electrode bar 1a
  • numeral 34 is a movable-electrode-side connection contact terminal of which one end is fixed to the movable electrode 1b through a shunt 34a of a flexible copper strand.
  • Numeral 61 is a first circuit conductor (for example, power supply side conductor), and numeral 71 is a second circuit conductor (for example, load side conductor).
  • the cylindrical vacuum switch 1 is mounted so that the stationary electrode 1a and the movable electrode 1b extends horizontally, for example, in the back and forth direction when the switchgear is viewed from the front, and the vacuum switch 1 can move horizontally to a predetermined position by a opening mechanism not shown.
  • the movable electrode 1b is driven horizontally (i.e., on a plane parallel to the plane on which the switchgear is mounted and in the back and forth direction when the switchgear is viewed from the front) by a switch mechanism (not shown), thereby opening or closing the internal contact (electrode) of the cylindrical vacuum switch 1.
  • the movable-electrode-side connection contact terminal 34 is fixed to the movable electrode 1b through the shunt 34a, the movable electrode 1b can move horizontally regardless of the movable-electrode-side connection contact terminal 34 at the time of opening and closing the contact (electrode).
  • the stationary-electrode-side connection contact terminal 24 is composed of a conductive material such as copper plate, and the other end thereof extends in the same direction as the central axis S of the vacuum switch 1 passing through the stationary electrode 1a and the movable. electrode 1b and slides coming in contact with the first circuit conductor 61 (for example, power supply side conductor).
  • the movable-electrode-side connection contact terminal 34 is also composed of a conductive material such as copper plate, and the other end thereof is bent transversally so as to be substantially parallel to the central axis S at a portion proximate to the cylindrical valve 1.
  • An end i.e., end opposite to the end fixed to the movable electrode 1b of the movable-electrode-side connection contact terminal 34 is arranged to slide coming. in contact with the second circuit conductor 71 (for example, load side conductor).
  • an elastic contact member 34b is disposed at the end of the movable-electrode-side connection contact terminal 34 in some cases.
  • Fig. 19 (a) shows a state that the vacuum switch unit 46 is separated from the first circuit conductor (for example, power supply side conductor) 61 and the second circuit conductor 71 (for example, load side conductor), and Fig. 19(b) shows a state that the vacuum switch unit 46 moves to a predetermined position by the opening mechanism not shown and slides coming in contact with the first circuit conductor 61 and the second circuit conductor 71.
  • first circuit conductor for example, power supply side conductor
  • Fig. 19(b) shows a state that the vacuum switch unit 46 moves to a predetermined position by the opening mechanism not shown and slides coming in contact with the first circuit conductor 61 and the second circuit conductor 71.
  • either the stationary-electrode-side connection contact terminal 24 or the movable-electrode-side connection contact terminal 34 is connected to a power supply circuit, and the other is connected to a load circuit. That is, the power supply side and the load side are reversed in some cases.
  • the vacuum switch unit is arranged so that the central axis of the vacuum switch extends horizontally, and the stationary-electrode-side connection contact terminal fixed to the stationary electrode of the vacuum switch comes in contact with and is connected to the power supply side circuit conductor (for example, main bus conductor) disposed vertically.
  • the power supply side circuit conductor for example, main bus conductor
  • the movable-electrode-side connection contact terminal of which one end is fixed to the movable electrode of the vacuum switch is bent into an L-shape in proximity to the vacuum switch so as to be parallel to the central axis of the vacuum switch, an end thereof comes in contact with and is connected to the U-shaped joint of the load side circuit conductor, and this load side circuit conductor is disposed in the direction parallel to the central axis of the vacuum switch (i.e., horizontally) . Therefore, it is possible to greatly relieve the bending stress on the stationary electrode and the movable electrode of the vacuum switch and downsize the switchgear in height (i.e., the vertical size) and, as a result, it is possible to obtain structurally reliable and downsized switchgear.
  • Fig. 20 is a schematic view showing a construction of an essential part (portion on which a vacuum switch unit is mounted) of switchgear according to Embodiment 13.
  • numeral 1 is a cylindrical vacuum switch
  • numeral 1a is a stationary electrode
  • numeral 1b is a movable electrode
  • numeral 24 is a stationary-electrode-side connection contact terminal
  • numeral 34 is a movable-electrode-side connection contact terminal
  • numeral 34a is a shunt
  • numeral 34b is a contact member.
  • This embodiment differs from the switchgear according to the foregoing Embodiment 12 in the aspect that disposing the first circuit conductor (the power supply side conductor) 61 shown in Fig. 19 is omitted and the stationary-electrode-side connection contact terminal 24 directly slides coming in contact with the main bus conductor 80.
  • numeral 80 is a main bus conductor of substantially U-shape in section and is disposed vertically. This main bus conductor 80 is arranged so that the stationary-electrode-side connection contact terminal 24 of the vacuum switch unit 46 slides coming in contact with an substantially U-shaped groove of the main bus conductor 80 when the vacuum switch unit 46 has moved to a predetermined position by any opening mechanism not shown.
  • the main bus conductor 80 is disposed in proximity to the vacuum switch unit 46 without interposing any other mechanism (for example, the power supply side conductor 61 in Fig. 19) between the main bus conductor 80 and the stationary-electrode-side connection contact terminal 24 extending in the same direction as the central axis S passing through the stationary electrode 1a and the movable electrode 1b, and the stationary-electrode-side connection contact terminal 24 slides horizontally and comes in contact with the main bus conductor 80 disposed vertically.
  • any other mechanism for example, the power supply side conductor 61 in Fig. 19
  • Fig. 21 is a schematic view showing a construction of an essential part (portion on which a vacuum switch unit is mounted) of switchgear according to Embodiment 14.
  • the movable-electrode-side connection contact terminal 32 of which one end is fixed to the movable electrode 1b is bent horizontally into an L-shape so as to be substantially parallel to the central axis S of the vacuum switch 1 at a portion proximate to the cylindrical vacuum switch 1.
  • the other end of the movable-electrode-side connection contact terminal 32 is disposed to slide and come in contact with the junction 71a of the second circuit conductor 71.
  • the second circuit conductor 71 is bent from the sliding contact portion (i.e., the junction 71a) substantially in parallel to the central axis S of the vacuum switch 1 and in a direction opposite to the direction where the movable-electrode-side connection contact terminal 32 is bent (i.e., in the direction of the movable electrode 1b).
  • the movable-electrode-side connection contact terminal 32 and the second circuit conductor 71 are formed into a U-shape at a portion proximate to the vacuum switch 1.
  • the other end of the stationary-electrode-side connection contact terminal 22 of which one end is fixed to the stationary electrode 1a is disposed to slide coming in contact with a junction 61a formed at an end of the first circuit conductor 61.
  • the first circuit conductor 61 is bent from the sliding contact portion (i.e., the junction 61a) substantially in parallel to the central axis S of the vacuum switch 1 and in a direction opposite to the direction of the stationary-electrode-side connection contact terminal 22 (i.e., in the direction of the movable electrode 1b)
  • the stationary-electrode-side connection contact terminal 22 and the first circuit conductor 61 are formed into a U-shape at a portion proximate to the vacuum switch 1.
  • a junction 61b is formed at the other end of the first circuit conductor 61 and slides coming in contact with another circuit conductor (for example, the main bus conductor 80) disposed horizontally.
  • the foregoing description shows an example in which the second circuit conductor 71 is formed into a U-shape at a portion proximate to the vacuum switch 1, it is also preferable to form the second circuit conductor 71 not into a U-shape but into a straight line.
  • Fig. 22 is a schematic view showing a construction of an essential part (portion on which a vacuum switch unit is mounted) of switchgear according to Embodiment 15.
  • the switchgear according to this embodiment is characterized by arranging a sensor 11 or an auxiliary machine 12 in the vicinity of the first circuit conductor 61 or the second circuit conductor 71 in addition to the feature of the switchgear according to the foregoing Embodiment 14.
  • the stationary-electrode-side connection contact terminal 22 and the first circuit conductor 61 are formed into a U-shape at a portion proximate to the vacuum switch 1 and, furthermore, this first circuit conductor 61 is provided with the sensor 11 such as current sensor or voltage sensor.
  • the movable-electrode-side connection contact terminal 32 and the second circuit conductor 71 are formed into a U-shape at a portion proximate to the vacuum switch 1 and, furthermore, this second circuit conductor 71 is provided with the auxiliary machine 12 such as zero-phase current transformer.
  • Fig. 23 is a schematic view showing ae construction of an essential part (portion on which vacuum switch units are mounted) of switchgear according to Embodiment 16.
  • three vacuum switch units for covering three phases, in each of which the first circuit conductor 61 joined (comes in contact with and is connected to) to the stationary-electrode-side connection contact terminal 22 is provided with the sensor 11 and the second circuit conductor 71 jointed to the movable-electrode-side connection contact terminal 32 is provided with the auxiliary machine (for example, a zero-phase current transformer) 12, are arranged horizontally forming a straight line.
  • the auxiliary machine for example, a zero-phase current transformer
  • Fig. 24 is a schematic view showing a construction of an essential part (portion on which vacuum switch units are mounted) of switchgear according to Embodiment 17.
  • the vacuum switch units as shown in the foregoing Embodiment 15 are arranged horizontally and mounted so that central axis S of each vacuum switch 1 of the vacuum switch units is positioned on each vertex of a triangle respectively.
  • three vacuum switch units for covering three phases, in each of which the first circuit conductor 61 joined to the stationary-electrode-side connection contact terminal 22 is provided with the sensor 11 and the second circuit conductor 71 jointed to the movable-electrode-side connection contact terminal 32 is provided with the auxiliary machine 12 such as zero-phase current transformer, are arranged so that they are positioned on the vertexes of a triangle respectively.
  • Fig. 25 is a schematic view showing a construction of an essential part (portion on which a vacuum switch unit is mounted) of switchgear according to Embodiment 18.
  • numeral 19a is a component that includes the cylindrical valve 1, the stationary-electrode-side connection contact terminal 22 and the movable-electrode-side connection contact terminal 32 formed integrally into one unit composed an organic insulating material (not shown) by injection molding.
  • Numeral 19b is a component that includes the sliding contact portion of the stationary-electrode-side connection contact terminal 22 and the main bus conductor 80 formed integrally into one unit composed of an organic insulating material by injection molding.
  • Numeral 19c is a component that includes the inverted U-shaped portion of the second circuit conductor 71 shown in Fig. 21 formed into one unit by injection molding.
  • Numerals 19d and 19e are components including the second circuit conductor 71 and the sensor 11 or the auxiliary machine 12 such as zero-phase current transformer formed integrally into one unit by injection molding.
  • Numeral 19f is a component including the remaining portion of the second circuit conductor 71 and a part of the other conductor 110 formed integrally into one unit by injection molding.
  • combining the various parts into several components further makes it easy to manage the parts, and this performs the advantage of making it easy to assemble the parts inside the switchgear. Furthermore, insulating property between the adjacent vacuum switch units is improved.
  • the vacuum switches of an organic insulating material disposed in the air is described in the foregoing constructions, the invention is also applicable to a construction used in gas atmosphere, provided that there is no possibility that the organic insulating material is not deteriorated in the gas.
  • Figs. 26 and 27 (a) and (b) are schematic views each showing a construction of an essential part (portion on which a vacuum switch unit is mounted) of switchgear according to Embodiment 19.
  • numeral 1 is a cylindrical vacuum switch.
  • This vacuum switch 1 is provided with a stationary electrode 1a (not shown) connected to an internal stationary contact (stationary electrode) at the center (central portion of the upper end in the drawings) of an end of the vacuum switch 1 and a movable electrode 1b connected to a movable contact (movable electrode) at the other end thereof.
  • a stationary electrode 1a (not shown) connected to an internal stationary contact (stationary electrode) at the center (central portion of the upper end in the drawings) of an end of the vacuum switch 1 and a movable electrode 1b connected to a movable contact (movable electrode) at the other end thereof.
  • Numeral 23 is a stationary-electrode-side connection contact terminal of which one end is fixed to the stationary electrode 1a (not shown), and numeral 33 is a movable-electrode-side connection contact terminal of which one end is fixed to the movable electrode 1b through a shunt (not shown) of a flexible copper strand.
  • This vacuum switch unit is mounted so that the stationary electrode 1a (not shown) and the movable electrode 1b are arranged vertically and the vacuum switch unit can move vertically to a predetermined position by an opening mechanism (not shown).
  • the movable electrode 1b is driven vertically by a switch mechanism (not shown), thereby opening or closing the contact (electrode) in the vacuum switch 1.
  • the movable-electrode-side connection contact terminal 33 is fixed to the movable electrode 1b through the shunt, and therefore the movable electrode 1b can move vertically regardless of the movable-electrode-side connection contact terminal 33 at the time of opening and closing the contact (electrode).
  • Numeral 1c is an insulating member interposed between the cylindrical vacuum switch 1 and the parting mechanism (not shown).
  • the stationary-electrode-side connection contact terminal 23 is formed of a conductive material such as copper plate or copper bar, and the other end thereof extends in the same direction as the central axis S of the vacuum switch 1 passing through the stationary electrode 1a (not shown) and the movable electrode 1b and slides coming in contact with the main bus conductor 80.
  • connection contact terminal 33 is formed of a conductive material such as copper plate, and the other end thereof is provided with a circuit conductor 72a (corresponding the connection contact part 33b in Fig. 6) that extends upward substantially in parallel to the central axis S at a portion proximate to the cylindrical vacuum switch 1.
  • a circuit conductor 72b slides coming in contact with this circuit conductor 72a and is connected to the circuit conductor 72a, whereby the circuit conductor 72b extends upward crossing a side face of the main bus conductor 80 close to each other.
  • the circuit conductor 72b is arranged to extend through between the main bus conductors 80.
  • a circuit conductor 72c is connected to the circuit conductor 72b crossing the side face of the main bus conductor 80 close to each other.
  • Fig. 26 shows a state that the vacuum switch unit is separated from the main bus conductor 80 and the circuit conductor 72b.
  • Fig. 27 (a) shows a state that the vacuum switch unit moves to a predetermined position by the opening mechanism not shown and is mounted on the main bus conductor 80 and the circuit conductor 72b.
  • Fig. 27 (a) shows a state that the end of the stationary-electrode-side connection contact terminal 23 of the vacuum switch 1 slides coming in contact with the main bus conductor 80, and the end of the movable-electrode-side connection contact terminal 33 slides coming in contact with the circuit conductor 72b through the circuit conductor 72a.
  • Fig. 27 (b) is a side view of Fig. 27(a).
  • Either the stationary-electrode-side connection contact terminal 23 or the movable-electrode-side connection contact terminal 33 is connected to a power supply circuit, and the other is connected to a load circuit.
  • the power supply side and the load side are reversed in some cases.
  • the vacuum switch unit used in this embodiment is not limited to the vacuum switch unit (i.e., the vacuum switch unit 45) constructed as shown in the foregoing Embodiment 2 (Fig. 6). It is also preferable to use the vacuum switch unit (i.e., the vacuum switch unit 46) of the construction as shown in the foregoing Embodiment 6 (Fig. 13) or Embodiment 7 (Fig. 14) as a matter of course.
  • the vacuum switch unit is arranged so that the central axis of the vacuum switch extends vertically.
  • the stationary-electrode-side connection contact terminal fixed to the stationary electrode of the vacuum switch comes in contact with and is connected to the power supply side circuit conductor (for example, the main bus conductor) arranged horizontally.
  • the movable-electrode-side connection contact terminal of which one end is fixed to the movable electrode of the vacuum switch is formed into an L-shape in proximity to the vacuum switch so as to be parallel to the central axis of the vacuum switch.
  • One end thereof crosses the power supply side circuit conductor and comes in contact with and is connected to the junction of the load side circuit conductor arranged upward in a vertical direction. Consequently, it is possible to greatly relieve the bending stress on the stationary electrode and the movable electrode of the vacuum switch and downsize the switchgear in depth and, as a result, it is possible to achieve structurally reliable and downsized switchgear.
  • the load side circuit conductor is disposed upward, and this makes it easy to lead in the cable located on the load side from the top of the switchgear.
  • Fig. 28 is a schematic view showing a construction of an essential part (portion on which a vacuum switch unit is mounted) of switchgear according to Embodiment 20.
  • This embodiment differs from the switchgear (Fig. 26) according to the foregoing Embodiment 19 in the aspect that the sensor 11 or the auxiliary machine 12 such as zero-phase current transformer is arranged in the vicinity of the circuit conductor 72b.
  • the switchgear includes the movable-electrode-side connection contact terminal 33 fixed to the movable electrode 1b of the cylindrical vacuum switch 1, the circuit conductor 72a (corresponding to the connection contact part 33b in Fig. 6) joined thereto, and the circuit conductor 72b.
  • This switchgear is characterized by arranging the sensor 11 or the auxiliary machine 12 such as zero-phase current transformer in the vicinity of the circuit conductor 72b.
  • the senor 11 or the auxiliary machine 12 is arranged in the vicinity of the main bus conductor 80 or the stationary-electrode-side connection contact terminal 23.
  • the vacuum switch unit used in this embodiment is not limited to the vacuum switch unit 45 constructed as shown in the foregoing Embodiment 2 (Fig. 6), and it is also preferable to use the vacuum switch unit (i.e., the vacuum switch unit 46) constructed as shown in the foregoing Embodiment 6 (Fig. 13) or Embodiment 7 (Fig. 14) as a matter of course.
  • Fig. 29 is a schematic view showing a construction of an essential part (portion on which vacuum switch units are mounted) of switchgear according to Embodiment 21.
  • plural (for example, three units corresponding to three phases) vacuum switch units are arranged vertically forming a straight line.
  • the vacuum switch 1 is arranged so that the stationary electrode 1a (not shown) of the vacuum switch 1 is located at the tops and the movable electrode 1b at the bottom.
  • the stationary-electrode-side connection contact terminal 23 disposed on the stationary electrode 1a (not shown) side is formed on upper side extending upward, and an end of the stationary-electrode-side connection contact terminal 23 is disposed so as to slide coming in contact with the main bus conductor 80 and slide coming in contact with the circuit conductor 72a (corresponding to the connection contact part 33b in Fig. 6) formed at an end of the movable-electrode-side connection contact terminal 33 disposed on lower side and with the circuit conductor 72b.
  • the mentioned construction is the same as that shown in Fig. 28.
  • the three vacuum switch units are mounted vertically forming a straight line as shown in Fig. 29.
  • Fig. 30 is a schematic view showing a construction of an essential part (portion on which a vacuum switch unit is mounted) of switchgear according to Embodiment 22.
  • numeral 19a is a component that includes the cylindrical vacuum switch 1 for covering three phases, the stationary-electrode-side connection contact terminal 22, and the movable-electrode-side connection contact terminal 32 formed integrally into one unit composed of an organic insulating material 20a by injection molding.
  • Numeral 19b is a component that includes the portions where the stationary-electrode-side connection contact terminal 22 slides coming in contact with the main bus conductor 80 for covering three phases formed into one unit composed of an organic insulating material 20b by injection molding.
  • Numeral 19c is a component including the circuit conductor 72b shown in Fig. 28, the sensor 11, and the auxiliary machine 12 such as zero-phase current transformer formed integrally into one unit by injection molding.
  • the invention is also applicable to a cylindrical valve having any other function such as disconnecting and grounding in the same manner as a matter of course.
  • the vacuum switches of an organic insulating material disposed in the air is described in the foregoing constructions, the invention is also applicable to a construction used in gas atmosphere, provided that there is no possibility that the organic insulating material is not deteriorated in the gas.
  • Figs. 31 (a) and (b) are schematic views each showing a construction of an essential part (portion on which a vacuum switch unit is mounted) of switchgear according to Embodiment 23.
  • the vacuum switch unit is arranged so that the central axis of the vacuum switch unit crosses the main bus conductor 80 arranged horizontally in the switchgear at right angles (i.e., in vertical direction).
  • the switchgear according to this embodiment is characterized by arranging the vacuum switch unit so that the central axis of the vacuum switch unit crosses the main bus conductor 80 arranged perpendicularly (i.e., vertically) in the switchgear at right angles (i.e., in horizontal direction).
  • numeral 1 is a cylindrical vacuum switch arranged horizontally.
  • This vacuum switch 1 is provided with a stationary electrode 1a (not shown), which is connected to an internal stationary contact (stationary electrode), at the center of an end of the vacuum switch 1 and with a movable electrode 1b connected to a movable contact (a movable electrode) at the other end thereof.
  • a stationary electrode 1a (not shown), which is connected to an internal stationary contact (stationary electrode), at the center of an end of the vacuum switch 1 and with a movable electrode 1b connected to a movable contact (a movable electrode) at the other end thereof.
  • Numeral 23 is a stationary-electrode-side connection contact terminal of which one end is fixed to the stationary electrode 1a (not shown), and numeral 33 is a movable-electrode-side connection contact terminal of which one end is fixed to the movable electrode 1b through a shunt (not shown) of a flexible copper strand.
  • This vacuum switch unit is mounted so that the stationary electrode 1a (not shown) and the movable electrode 1b extend horizontally and the vacuum switch unit can move horizontally to a predetermined position by an opening mechanism (not shown).
  • the movable electrode 1b is driven horizontally by a switch mechanism (not shown), thereby opening or closing the contact (electrode) in the vacuum switch 1.
  • the movable-electrode-side connection contact terminal 33 is fixed to the movable electrode 1b through the shunt, it is possible to move the movable electrode 1b horizontally regardless of the movable-electrode-side connection contact terminal 33 at the time of opening and closing the contact (electrode).
  • Numeral 1c is an insulating member interposed between the cylindrical vacuum switch 1 and the opening mechanism (not shown).
  • the stationary-electrode-side connection contact terminal 23 is formed of a conductive material such as copper plate or copper bar, and the other end thereof extends in the same direction as the central axis S of the vacuum switch 1 passing through the stationary electrode 1a (not shown) and the movable electrode 1b and slides coming in contact with the main bus conductor 80 arranged perpendicularly (i.e., vertically).
  • the movable-electrode-side connection contact terminal 33 is likewise formed of a conductive material such as copper plate, and the other end thereof is provided with a circuit conductor 72a that extends toward the backside of the switchgear so as to be substantially parallel to the central axis S at a portion proximate to the cylindrical vacuum switch 1.
  • a circuit conductor 72b slides coming in contact with the circuit conductor 72a and is connected to the circuit conductor 72a, and the circuit conductor 72b extends toward the backside of the switchgear and crosses a side face of the main bus conductor 80 close to each other.
  • the circuit conductor 72b is arranged to extend through between the main bus conductors 80.
  • a circuit conductor 72c is connected to the circuit conductor 72b crossing the side face of the main bus conductor 80 close to each other.
  • Fig. 31(a) shows a state that the vacuum switch unit has moved to a predetermined position by the opening mechanism not shown and is mounted on the main bus conductor 80 and the circuit conductor 72b.
  • Fig. 31(a) shows a state that the end of the stationary-electrode-side connection contact terminal 23 of the vacuum switch 1 slides coming in contact with the main bus conductor 80, and the end of the movable-electrode-side connection contact terminal 33 slides coming in contact with the circuit conductor 72b through the circuit conductor 72a.
  • Fig. 31(b) is a side view of Fig. 31(a).
  • the vacuum switch unit is arranged so that the central axis of the vacuum switch extends horizontally, and the stationary-electrode-side connection contact terminal fixed to the stationary electrode of the vacuum switch comes in contact with and is connected to the power supply side circuit conductor (for example, the main bus conductor) disposed vertically.
  • the movable-electrode-side connection contact terminal of which one end is fixed to the movable electrode of the vacuum switch is formed into an L-shape in proximity to the vacuum switch so as to be parallel to the central axis of the vacuum switch, and the end thereof comes in contact with and is connected to the junction of the load side circuit conductor crossing the power supply side circuit conductor and horizontally extending toward the backside of the switchgear.
  • the vacuum switch unit according to the present invention it is possible to greatly relieve the bending stress on the stationary electrode and the movable electrode in assembling, and therefore the invention is suited for accomplishing a vacuum switch unit highly reliable on mechanical strength.
  • the invention is suited for accomplishing reliable switchgear in which number of parts is reduced and efficiency in assembling is improved.

Landscapes

  • High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Patch Boards (AREA)
  • Gas-Insulated Switchgears (AREA)
  • Push-Button Switches (AREA)
EP02726482.9A 2001-07-19 2002-05-24 Vakuumschaltereinheit und schaltvorrichtung Expired - Lifetime EP1367681B2 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE60219769.4T DE60219769T3 (de) 2001-07-19 2002-05-24 Vakuumschaltereinheit und Schaltvorrichtung

Applications Claiming Priority (9)

Application Number Priority Date Filing Date Title
JP2001220302 2001-07-19
JP2001220304 2001-07-19
JP2001220303 2001-07-19
JP2001220304 2001-07-19
JP2001220302 2001-07-19
JP2001220303 2001-07-19
JP2001225230 2001-07-26
JP2001225230 2001-07-26
PCT/JP2002/005037 WO2003009441A1 (fr) 2001-07-19 2002-05-24 Unite de commutation sous vide et appareillage de commutation

Publications (4)

Publication Number Publication Date
EP1367681A1 true EP1367681A1 (de) 2003-12-03
EP1367681A4 EP1367681A4 (de) 2004-10-20
EP1367681B1 EP1367681B1 (de) 2007-04-25
EP1367681B2 EP1367681B2 (de) 2020-08-19

Family

ID=27482449

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02726482.9A Expired - Lifetime EP1367681B2 (de) 2001-07-19 2002-05-24 Vakuumschaltereinheit und schaltvorrichtung

Country Status (7)

Country Link
EP (1) EP1367681B2 (de)
JP (1) JP4229833B2 (de)
KR (1) KR100493612B1 (de)
CN (1) CN1310387C (de)
DE (1) DE60219769T3 (de)
TW (1) TW548672B (de)
WO (1) WO2003009441A1 (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007022931A1 (de) * 2005-08-22 2007-03-01 Abb Technology Ag Verfahren zur herstellung von schalterpolteilen für nieder-, mittel- und hochspannungsschaltanlagen, sowie schalterpolteil selbst
WO2012083997A1 (en) * 2010-12-23 2012-06-28 Abb Technology Ag High voltage vacuum interrupter
WO2014102710A1 (en) * 2012-12-28 2014-07-03 Abb Technology Ltd A withdrawable circuit breaker with integrated current and voltage transformers
WO2014102684A1 (en) * 2012-12-24 2014-07-03 Abb Technology Ltd A switchgear
WO2022214216A3 (en) * 2021-04-07 2022-11-17 Eaton Intelligent Power Limited Current interrupting module with a resettable current interruption device

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102019209875A1 (de) * 2019-07-04 2021-01-07 Siemens Aktiengesellschaft Schalteinrichtung
JP7487008B2 (ja) 2020-05-22 2024-05-20 株式会社東芝 真空バルブの配置構造

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3527911A (en) * 1968-07-22 1970-09-08 Gen Electric Mounting arrangement for a vacuum circuit interrupter
DE3447314A1 (de) * 1984-12-24 1986-06-26 Calor-Emag Elektrizitäts-Aktiengesellschaft, 4030 Ratingen Einrichtung fuer eine vakuum-schaltroehre

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JPS4531709Y1 (de) * 1967-05-17 1970-12-04
JPH06231660A (ja) * 1993-02-02 1994-08-19 Toshiba Corp スイッチギヤ
JPH07193921A (ja) * 1993-12-27 1995-07-28 Takaoka Electric Mfg Co Ltd 金属閉鎖形スイッチギヤ
JPH1198627A (ja) * 1997-09-19 1999-04-09 Nissin Electric Co Ltd 遮断器
JPH1198267A (ja) * 1997-09-19 1999-04-09 Fujitsu Ltd 通信支援装置
JPH11146514A (ja) * 1997-11-11 1999-05-28 Nissin Electric Co Ltd 真空遮断器

Patent Citations (2)

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Publication number Priority date Publication date Assignee Title
US3527911A (en) * 1968-07-22 1970-09-08 Gen Electric Mounting arrangement for a vacuum circuit interrupter
DE3447314A1 (de) * 1984-12-24 1986-06-26 Calor-Emag Elektrizitäts-Aktiengesellschaft, 4030 Ratingen Einrichtung fuer eine vakuum-schaltroehre

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO03009441A1 *

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007022931A1 (de) * 2005-08-22 2007-03-01 Abb Technology Ag Verfahren zur herstellung von schalterpolteilen für nieder-, mittel- und hochspannungsschaltanlagen, sowie schalterpolteil selbst
US7852180B2 (en) 2005-08-22 2010-12-14 Abb Technology Ag Method for producing breaker pole parts for low-voltage, medium-voltage and high-voltage switchgear assemblies, and breaker pole part itself
WO2012083997A1 (en) * 2010-12-23 2012-06-28 Abb Technology Ag High voltage vacuum interrupter
WO2014102684A1 (en) * 2012-12-24 2014-07-03 Abb Technology Ltd A switchgear
WO2014102710A1 (en) * 2012-12-28 2014-07-03 Abb Technology Ltd A withdrawable circuit breaker with integrated current and voltage transformers
WO2022214216A3 (en) * 2021-04-07 2022-11-17 Eaton Intelligent Power Limited Current interrupting module with a resettable current interruption device

Also Published As

Publication number Publication date
KR20030031191A (ko) 2003-04-18
KR100493612B1 (ko) 2005-06-10
JP4229833B2 (ja) 2009-02-25
DE60219769D1 (de) 2007-06-06
DE60219769T3 (de) 2020-12-31
EP1367681B2 (de) 2020-08-19
JPWO2003009441A1 (ja) 2004-11-11
EP1367681A4 (de) 2004-10-20
TW548672B (en) 2003-08-21
WO2003009441A1 (fr) 2003-01-30
CN1473381A (zh) 2004-02-04
EP1367681B1 (de) 2007-04-25
DE60219769T2 (de) 2008-01-17
CN1310387C (zh) 2007-04-11

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