EP0559552B1 - Lasttrennschalter für hohe Nominal-Intensität und Verwendung für Zelle und für Mittel-Spannungsanlage - Google Patents

Lasttrennschalter für hohe Nominal-Intensität und Verwendung für Zelle und für Mittel-Spannungsanlage Download PDF

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Publication number
EP0559552B1
EP0559552B1 EP93400533A EP93400533A EP0559552B1 EP 0559552 B1 EP0559552 B1 EP 0559552B1 EP 93400533 A EP93400533 A EP 93400533A EP 93400533 A EP93400533 A EP 93400533A EP 0559552 B1 EP0559552 B1 EP 0559552B1
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EP
European Patent Office
Prior art keywords
self
metal
rod
isolating
connection member
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
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EP93400533A
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English (en)
French (fr)
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EP0559552A1 (de
Inventor
Paul Rozier
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Grid Solutions SAS
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GEC Alsthom T&D SA
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Publication of EP0559552A1 publication Critical patent/EP0559552A1/de
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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
    • H01H33/66—Vacuum switches
    • H01H33/666—Operating arrangements
    • H01H33/6661—Combination with other type of switch, e.g. for load break 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
    • H01H33/02—Details
    • H01H33/04—Means for extinguishing or preventing arc between current-carrying parts
    • H01H33/12—Auxiliary contacts on to which the arc is transferred from the main contacts
    • H01H33/121—Load break switches

Definitions

  • the present invention relates to a self-disconnecting circuit breaker according to the preamble of claim 1 usable in particular for circuits or lines with high nominal current, for example 3150 amps and more.
  • the present invention also relates to a cell comprising such a self-disconnecting circuit breaker and to a station comprising such a cell.
  • An electrical disconnect circuit breaker is an electrical device having a circuit breaker breaking capacity and which, when in the open position, has between its terminals a dielectric strength between input and output equal to or greater than that required for the disconnectors.
  • Such a device can therefore replace three switchgear functions, which is particularly advantageous for the operator, both because of the savings made in investment (lower cost, smaller footprint) than by the savings in maintenance at during operation.
  • a first object of the invention is to provide a multi-pole self-disconnecting circuit breaker of low weight and compact in all its dimensions, therefore easily accommodable in a cell and easily maneuverable without requiring great maneuvering energy.
  • Another object of the invention is to provide a cell and a medium-voltage substation equipped with the above-mentioned self-isolating circuit breaker.
  • the subject of the present invention is a multipole self-disconnecting circuit breaker comprising for each pole a double insulating bushing surrounding a vacuum interrupter and comprising at a first end a first connection element connected to a first terminal of the ampoule and intended to be connected electrically to an incoming conductor, and at a second end a second connection element connected to the other terminal of the bulb and intended to be connected electrically to a feeder conductor, characterized in that each crossing further comprises at least two metal blades passing right through it and opening out to form external sockets intended to be connected respectively to said feeder conductor and to said audit incoming conductor, the bushings being fixed to the same metal section along and sheltered from which is placed a common operating shaft for the bulbs and actuated by a control for operating the bulbs contained in a box integral with the section, the latter capable of being actuated in rotation, the aforementioned plugs and connection elements of the bushing being arranged so that the rotation of the profile first causes the switching of the current passing through the said blades in the vacuum
  • the insulating passage of each pole comprises a first cavity in which is housed the vacuum bulb, said bulb comprising an insulating envelope closed by first and second metal flanges, the first metal flange being externally connected to one of said connection elements and internally to a fixed contact of the vacuum interrupter, said second flange being leaktightly traversed by a movable metal rod carrying a second movable contact of the vacuum interrupter, the crossing insulator each comprising a second cavity communicating with the first cavity and in which is disposed a metal tube mechanically connected to the vacuum interrupter and electrically connected to said movable metal rod, said tube containing a control rod connected to said movable metal rod,!
  • each pole being fixed to said metal profile, the ti control of each pole being mechanically connected to said shaft by means of a lever articulated on an end piece integral with the metal tube, of an insulating arm articulated by a first end to said lever and by a second end to a connecting rod wedged on said shaft, said end piece being mechanically and electrically connected to said metal tube and carrying said second connection element.
  • the first cavity has internal grooves parallel to the axis of the passage, defining with the external wall of the vacuum interrupter ventilation channels, the air circulating in the metal tube and penetrating into said channels through holes in said tube.
  • the vacuum interrupter is placed in an insulating cylindrical cage, for example made of resin, placed in said first cavity.
  • said cage has grooves parallel to its axis, defining with the wall of the vacuum interrupter ventilation channels, the air circulating in the metal tube and penetrating into said channels through holes in said tube.
  • the dielectric strength between said metal tube and the wall of said second cavity is ensured by a sheath of compressible insulating material slid over said metal tube and engaged in said second cavity, the mounting being facilitated by the use of an insulating grease.
  • said sheath is made of latex.
  • the kinematic chain between said control rod and said control shaft comprises a spring play adjustment mechanism.
  • the end of the control rod comprises a tubular end portion in which engages said movable rod, said movable rod comprising a lumen in which is engaged a first pin passing through said control rod, a spring s' pressing against a first support washer in contact with said end of the control rod, and against a second support washer engaged in the mobile rod and held by a second pin passing through the mobile rod.
  • the mechanical connection of said metal tube with the vacuum interrupter and the electrical connection of said metal tube with said movable contact rod is ensured by means of a sleeve fixed to said second flange, of a ring secured to said sleeve and to said tube, and to an accordion or socket type contact disposed inside said ring and surrounding said rod.
  • Said end piece comprises two half-collars tightened on said metal tube and in abutment on the end of the insulating bushing.
  • the half-collars comprise lugs cooperating with cells made in the insulating bushing to immobilize said metal tube in rotation.
  • Said sheath is blocked by a circlip tightened on said metal tube.
  • the outer surface of the insulating bushing is metallized in the area adjacent to the support profile.
  • the crossing comprises, in the vicinity of the fillet connecting the two cavities, a metal grid inserted in the molding and set to the potential of said metal tube.
  • the invention also relates to a medium-voltage cell, characterized in that it comprises at least one self-disconnecting circuit breaker of the aforementioned type.
  • the box has a first, fixed flap, separating the space containing the bars from the space in the drawer.
  • the box has a second, movable flap, occupying a position above the first flap when the circuit breaker is in service and coming, when the circuit breaker is in the cut position, occupy a place where it completely prevents, with the first shutter access to the bar space from the drawer space.
  • the movement of the second flap is ensured by a disc driven in rotation by the rotation of the profile and actuating at least one set of connecting rods connected to said second drawer which slides in slides fixed to the box.
  • the disc comprises a notch cooperating with a latch to immobilize the disc when the drawer is extracted, the latch being unlocked by action of the drawer when the latter is replaced.
  • the drawer has a shutter driven in rotation by the rotation of the circuit breaker-auto-selector when passing from the cut-off position of the disconnection to the tripped position and putting the poles to earth when the self-disconnector circuit breaker is in the cut position.
  • the metal profile is rotated by a gear motor fixed to the drawer and cooperating with a pinion secured to the profile.
  • the invention also relates to a medium-voltage substation comprising a cell of the aforementioned type and at least one cell comprising a self-disconnecting circuit breaker of the aforementioned type associated with a busbar ascent compartment.
  • poles of the self-disconnecting circuit breaker of the invention are referenced 1, 2 and 3; they are fixed to a common metal profile 4, preferably at right angles, along and sheltered from which is placed a control shaft 38 of the poles.
  • Reference 29 designates the pole fixing collar on the profile 4.
  • Profile 4 is at ground potential; as will be seen below, the profile can turn on itself around its longitudinal direction to ensure the switching current function and cutting the device; the profile 4 is integral with a control box 5 for the circuit breaker function of the device, inside which the shaft 38 penetrates.
  • the assembly constituted by the profile and the poles is well balanced, so that the above-mentioned sectioning operation requires only a low energy.
  • Figure 2 is an axial sectional view of a pole, for example the pole 1.
  • Figure 3 is an axial sectional view of the same pole, 90 ° from the previous one.
  • the pole includes an insulating bushing 10, made of resin or elastomer. If necessary, the bushing can be fitted with fins of the attached type or molded inlets.
  • the bushing 10 is a cylindrical volume with a rectangular cross section, with rounded corners for dielectric reasons.
  • Two copper strips 7 and 8 parallel to each other and to the axis of the crossing are arranged inside the latter; the blades are placed within the bushing during the molding thereof.
  • the blades 7 and 8 extend outside the bushing to form electrical outlets at each end of the bushing.
  • These sockets are referenced 7A, 7B, 8A and 8B. They cooperate with complementary sockets described below and are used to convey the permanent current which, as already explained, is of high intensity (3150 amps and more for example).
  • the passage comprises, at the upper part of the drawing, an axial cylindrical housing receiving a vacuum interrupter 14 shown diagrammatically.
  • the vacuum interrupter comprises an insulating envelope 15, preferably made of ceramic, and two metal end plates or flanges 16 and 17. On the plate 16 is fixed, inside the ampoule, a metal rod 18 carrying a fixed contact 19; a connection element 20A, such as a jaw, is fixed to the plate 16, outside the envelope.
  • the vacuum interrupter comprises a movable contact 21 carried by a metal rod 22 sliding in leaktight manner through the plate 17 thanks to a sealing bellows 23.
  • the interior surface of the housing of the vacuum interrupter is provided with grooves 12 parallel to the axis of the passage and serving as ventilation channels, as will be explained below.
  • the diameter and the depth of the vacuum bulb housing are chosen for a given type of vacuum bulb; if you want to accommodate a bulb of smaller dimensions, you will interpose, as shown in Figure 6, between the inner wall of the housing and the vacuum bulb 14, a cylindrical cage 13 of insulating material such as resin, provided of external grooves 13A defining with the lateral surface of the vacuum interrupter ventilation channels.
  • the bushing comprises a second frustoconical housing in communication with the housing of the vacuum interrupter.
  • the volume delimited by this second housing is therefore conical, its section decreasing when moving from the housing of the bulb.
  • the second housing contains a metal tube 25, preferably made of copper, secured to the vacuum interrupter as will be shown with reference to FIG. 7, and in electrical contact with the movable rod 22 of the vacuum interrupter.
  • the tube 25 is used to convey the current between the vacuum interrupter and a part 26, described in detail with reference to FIG. 5 and carrying a connection element 20B, for example a jaw.
  • the dielectric strength between the bushing 10 and the metal tube 25 is ensured by means of a sheath 27, of insulating material such as latex, and having a tubular shape with a cylindrical inner section and a conical outer surface complementary to the surface of the second home.
  • this sheath is slid around the metal tube 25, slipping being facilitated by the use of an insulating grease, for example based on silicone.
  • the outer surface of the sheath is coated with the same grease and engaged in the second housing, applying pressure so as to ensure the elimination of air. Maintaining the sheath in compression is ensured by means of a stop means such as a circlip 28 engaged in a groove in the tube 25.
  • the pole is placed in abutment on the metal profile 4, thanks to a transverse groove 10A of the bushing, coming from molding.
  • the opening or closing operation of the vacuum interrupter is ensured by means of a rod 30, for example metallic, fixed for example by screwing to the rod 22.
  • This rod is articulated at 31 to a return lever 32 itself articulated at 33 on part 26.
  • the end of the lever is articulated at 34 at a first end of an insulating rod 35 whose second end is articulated at 36 at a first end of a connecting rod 37 whose second end is wedged on the control shaft 38 placed along the profile 4 .
  • the copper tube 25 carries, in the vicinity of the plate 17, holes 25A whose role is explained now.
  • the self-disconnecting circuit breaker of the invention When the self-disconnecting circuit breaker of the invention is closed, the nominal current mainly passes through the conductors 7 and 8; only a fraction of the current flows through the vacuum interrupter.
  • the vacuum interrupter To interrupt the current in the circuit breaker, either for a normal operating operation or because of a fault, the device is tilted by rotation of the profile, which causes the separation of the contacts 7A, 7B , 8A, 8B, then the vacuum interrupter is opened by the rotation of the shaft 38 causing, by the play of the various levers, the displacement of the rod 30.
  • FIG. 7 shows how the metal tube 25 is mechanically fixed to the vacuum interrupter 14 and how the current can pass from the movable rod 22 to the tube 25.
  • Vacuum ampoules usually include a metal cover welded to the plate 17 and which contains a bearing for the movable rod 22.
  • the cover is modified and transformed into a sleeve 15A internally threaded to which a metal ring 15B can be screwed.
  • the tube 25 is engaged inside this ring and secured to the ring by brazing or screwing.
  • the ring and the tube then define a shoulder against which an accordion type contact or a contact socket 15C rests.
  • the shape and role of the part 26 are specified with reference to FIGS. 3 and 5. It can be seen that the part 26 comprises two half-collars 41 and 42 which can be tightened by means of screws 43, 44. These half-collars enclose the end of the conductive tube 25, which protrudes from the bushing 10, with a contact pressure sufficient to ensure the passage of current. The half-collars, abutting against the end of the bushing 10, thus ensure the immobilization in axial translation of the tube 25 and the vacuum interrupter 14 which is integral therewith.
  • Lugs 45 carried by the half-collars cooperate with cells coming from molding at the end of the bushing 10 to immobilize the tube 25 and, consequently, the vacuum interrupter 14, in rotation.
  • a plate 46 secured to the half-collars for example by means of screws 47, serves to support the connection element 20B.
  • the outer surface of the bushing 10, in line with the section 4, is metallized and brought to earth potential.
  • FIGS. 2 and 3 shows the presence, between the flange 17 and the passage portion 10C connecting the two housings, of a volume filled with air. Without special precautions, this volume would be subject to a strong potential gradient which could lead to partial discharges which in the long run can be destructive.
  • the bushing comprises, in line with the aforementioned volume, a metal mesh 51A inserted during the molding of the bushing, and which is set to the potential of the metal tube 25. In this way, the potential differences are applied to the only insulating parts.
  • the operating rod 30 may comprise a play take-up member comprising a cage provided with a spring 53; this play take-up member can also, as a variant, be arranged at any location of the kinematic chain connecting the rod 22 and the control shaft 38.
  • This cage can in certain cases be too bulky, it is possible to replace it with the device described below with reference to FIG. 8.
  • At least the end of the control rod 30 has a tubular portion 30A in which engages the end of the movable rod 22 of the bulb.
  • the movable metal rod 22 includes a light 22A in which is engaged a first pin 22B passing through the rod 30.
  • a spring 22C is disposed between a first support washer 22D in contact with the end of the tubular part 30A, and a second washer 22E engaged in the rod 22 and held by a second pin 22F passing through the rod 22.
  • the rod 30 compresses the spring 22C which transmits the force to the movable rod 22 without play.
  • the play take-up assembly is guided in the conductive tube 25 by the washers 22D and 22E supporting the spring.
  • the washers have holes or notches at their periphery to allow the passage of the air for cooling the bulb.
  • control rod 30 is made in tubular form; alternatively, the control rod can be a tube over its entire length.
  • the control shaft 38 is fixed to the metal section 4 by known means not shown, so as to leave it free to rotate.
  • the shaft can be protected more completely by means of a not shown angle profile, for example plastic, clipped onto the metal profile 4 so as to define a hollow beam and thus protect the shaft 38 from the dust.
  • Figures 9 to 12 illustrate the mounting of the self-disconnecting circuit breaker of the invention for the production of a medium voltage cell.
  • FIGS. 9 and 10 there is a metal frame 55 seen in section; this frame is brought to earth potential by conventional means not shown; to this frame is fixed, by all means not shown, a box 55A containing the self-isolating circuit breaker of the invention, as well as various elements described below: the box first contains a drawer 56 sliding on slides; the drawer 56 has two opposite faces 56A and 56B (see FIG. 12) on which the ends of the metal section 4 are mounted in rotation. It will be recalled that this profile can rotate on itself and that it is integral with the control box 5 shown in dashed lines in FIGS. 10 and 11.
  • the box carries at its upper part insulators 57 serving to support terminals 58 connected to the electrical bars 59 of the station.
  • the frame is surmounted by the bar compartment 60.
  • the box carries a first fixed flap 61 which prevents access to the left part of the bar compartment from the front face of the cell.
  • the box carries slides 61A carrying a flap 61B which, when the circuit breaker is in normal service, remains on the left of the figure (figure 9) and which, when the circuit breaker is in the sectioned position (figure 10) , automatically moves to the right of the figure to prevent access to the right part of the bar compartment from the front of the cubicle.
  • the drawer comprises a pivoting automatic shutter 62 which is returned to position by a spring 63; in normal service (figure 9), this flap separates the busbar compartment from the cable compartment; during a sectioning maneuver, it ensures the earth potential of the device coming and remaining in contact with the contact 8A ( Figure 10).
  • each starting cable 65 is connected to a terminal 66 carried by a support insulator 67 which can also serve as a voltage detector, the latter being detected by means of indicator lamps 68 placed at the base of the support insulator 67.
  • Terminal 66 ( Figure 11) comprises two trapezoidal blades 66A and 66B intended to cooperate with the blades 7B and 8B of the pole, and an elongated blade 66C intended to cooperate with the connection element 20B; the blades 66A and 66B carry contact fingers 66D between which the blades 7B and 8B engage.
  • the trapezoidal shapes facilitate a gradual entry into service of the contacts, therefore a better distribution of forces.
  • Terminal 58 has the same elements as terminal 66, referenced 58A, 58B, 58C and 58D to cooperate with the blades 7A and 8A as well as the connection element 20A.
  • An earthing switch 70 completes the equipment of the cell.
  • the frame 55 is placed on a box 72 for the departure of the cables; moreover, a relaying box 73 can be placed above the box 55A, with display and display members 74 arranged on the front face.
  • box 55A containing the drawer with the poles of the circuit breaker, the earthing switch, the isolators and the device for displaying the presence of voltage can be manufactured and checked in the factory and mounted on site.
  • the metal section 4, connected to the control box, is at ground potential; as the poles of the circuit breaker are mounted on a common profile, the risk of ignition between phases is practically non-existent, all priming occurring first on the ground.
  • the switching of the current and the sectioning by rotation of the metal section 4 integral with the control box is normally motorized, but it can also be carried out manually.
  • the profile is held by two ball bearings 75 and 76 integral with the walls 56A and 56B of the drawer.
  • the control box is secured to the profile 4, for example by welding.
  • a pinion 77 is secured to the profile 4.
  • a motor 78 fixed to the wall 56A of the drawer, drives, by a helical screw 79, with speed reduction, the pinion 77, which causes the profile 4 and the cabinet 5 to rotate, independently of the movement of the control shaft 38.
  • the motorization of the sectioning which has just been described shows that the apparatus can be remote-controlled and that it can therefore equip the stations for which there is no maneuvering personnel or surveillance.
  • FIGS. 15 and 16 illustrate an embodiment, given by way of nonlimiting example, of an automatic operating mechanism for the flap 61B.
  • the box carries, as already mentioned, two slides 61A in which the flap 61B, which is a rectangular sheet, can slide.
  • the box carries, on its rear face, a movable disc 61C provided with a central hole 61D of suitable shape to receive the section 4 which projects beyond the drawer beyond the face 56B (see FIG. 14) and allow the disc to rotate when the pole support profile 4 turns on itself during a sectioning operation.
  • the hole is advantageously square or rectangular.
  • the flap is driven in translation by the rotation of the disc by means of two sets of linkages cooperating with a shaft 61E parallel to the plane of the flap and parallel to the profile 4.
  • the shaft is fixed to the box 55A by means of bearings not shown.
  • the first set of connecting rods comprises a connecting rod 61H wedged on the shaft 61E and articulated to a crank 61I articulated to the flap.
  • the support section 4 engaged in the hole of the disc 61C is rotated in the direction of the arrow (Fig.15); the rotation of the disc 61C causes the rotation of the shaft 61E and the rod-crank assembly 61H-61I causes the translation of the flap 61B which obstructs access to the right part of the bar compartment.
  • a locking latch 61J engages in a notch 61K of the disc 61C, immobilizing the flap 61B in its position. This latch, fitted with a spring, is released when the drawer is replaced.
  • Box 5 contains an overcurrent relay used to control the opening of the device in the event of a fault resulting in overcurrent.
  • the box also contains the mechanism for rotating the control shaft 38, making it possible to perform opening and closing cycles of the vacuum interrupter.
  • FIG. 17 is a block diagram of this mechanism, the advantage of which is that it is directly linked to the control shaft 38 of the self-isolating circuit breaker. It suffices to give the principle of this mechanism; its implementation is within the reach of the skilled person who can usefully refer to the Techniques of Engineer, High voltage electrical switchgear, by Euffer MAURY, D 657-4, page 49.
  • the mechanism comprises a drum 80 provided with a spring and which constitutes the reservoir of operating energy.
  • a gear motor 81 makes it possible to drive the drum to reset the spring.
  • the drum drives in rotation a shaft 82 always rotating in the same direction under the action of the rebound of the spring; this shaft is associated with hooking devices 83 with electrical or manual control, making it possible to carry out the usual opening and closing cycles (for example an OPEN cycle, 0.1 seconds CLOSE, OPEN).
  • An eccentric device 84 makes it possible to transform the one-way movement of the shaft 82 into an alternating circular movement communicated to the control shaft 38 of the poles of the self-disconnecting circuit breaker.
  • the mechanism comprises, as is well known, a manual resetting member comprising a crank 85 visible in FIGS. 1, 12 and 13.
  • the invention typically applies to the production of medium voltage cells (for example 36 kV) with high nominal current (typically 3150 amps and more).
  • FIG. 18 schematically represents a station produced by means of several circuit breakers such as 101 and 102; the self-disconnecting circuit breaker 101 is placed in a cell 110 similar to that shown with reference to FIGS. 9 to 13 and comprising the incoming cables 111; the other self-disconnecting circuit breakers are placed in coupling cells such as 120 coupled to cells such as 121 for busbar mounting.

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  • Gas-Insulated Switchgears (AREA)
  • Push-Button Switches (AREA)
  • Oscillators With Electromechanical Resonators (AREA)
  • Measurement Of Current Or Voltage (AREA)
  • Primary Cells (AREA)
  • Hybrid Cells (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Keying Circuit Devices (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Particle Accelerators (AREA)
  • High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)

Claims (24)

  1. Mehrpoliger Leistungsschalter mit automatischer Erdung, der für jeden Pol einen doppelten isolierenden Durchlaß (10) besitzt, der eine Vakuum-Trennkammer (14) umgibt, wobei ein erstes Ende des Durchlasses ein erstes Verbindungselement (20A), das an eine erste Klemme der Kammer angeschlossen ist und elektrisch an einen Eingangsleiter angeschlossen werden kann, und ein zweites Ende ein zweites Verbindungselement (20B) enthält, das an die andere Klemme der Kammer angeschlossen ist und elektrisch an einen Ausgangsleiter angeschlossen werden kann, dadurch gekennzeichnet, daß jeder Durchlaß weiter mindestens zwei Metallstäbe (7, 8) besitzt, die ihn ganz durchqueren und außen in einem Stromanschluß (7A, 7B, 8A, 8B) münden, der an den Eingangs- und Ausgangsleiter angeschlossen werden soll, wobei die Durchlässe an einem gemeinsamen Metallprofil (4) befestigt sind, entlang dem eine für alle Kammern gemeinsame Betätigungswelle (38) angeordnet ist, welche von einer Betätigungssteuerung für die Kammern in einem mit dem Metallprofil fest verbundenen Kasten betätigt wird, wobei das Metallprofil in Drehrichtung betätigt werden kann und die Stromanschlüsse (7A, 8A, 7B, 8B) und die Verbindungselemente (20A, 20B) des Durchlasses so angeordnet sind, daß die Drehung des Metallprofils (4) zuerst den die Stäbe in der Trennkammer (14) durchfließenden Strom schaltet und dann die Erdung des Geräts bewirkt.
  2. Leistungsschalter nach Anspruch 1, dadurch gekennzeichnet, daß der isolierende Durchlaß jedes Pols einen ersten Raum aufweist, in dem die Trennkammer (14) sitzt, daß die Trennkammer eine isolierende Hülle (15) aufweist, die von zwei Metallflanschen (16, 17) verschlossen wird, daß der erste Metallflansch (16) außen mit einem der Verbindungselemente (20A) und innen mit einem unbeweglichen Kontakt (18) der Trennkammer verbunden ist, während der zweite Flansch (17) dicht von einem einen zweiten beweglichen Kontakt (21) der Trennkammer (14) tragenden, beweglichen Metallstift (22) durchdrungen wird, daß der isolierende Durchlaß einen zweiten Raum enthält, der mit dem ersten Raum in Verbindung steht und in dem ein mechanisch mit der Trennkammer (14) verbundenes und elektrisch mit dem beweglichen Metallstift (22) verbundenes Metallrohr (25) liegt, daß das Metallrohr (25) eine Steuerstange (30) enthält, die mit dem beweglichen Metallstift (22) verbunden ist, daß die isolierenden Durchlässe jedes Pols am Metallprofil (4) befestigt sind, daß die Steuerstange (30) jedes Pols mechanisch mit der Betätigungswelle (38) über einen Hebel (32), der an einem Endstück (26) des Metallrohrs (25) gelenkig befestigt ist, und über einen isolierenden Arm (35) verbunden ist, der mit einem ersten Ende am Hebel (32) und mit einem zweiten Ende an einer Pleuelstange (37) angelenkt ist, die auf der Welle (38) festsitzt, und daß das Endstück (26) mechanisch und elektrisch mit dem Metallrohr (25) verbunden ist und das zweite Verbindungselement (20B) trägt.
  3. Leistungsschalter nach Anspruch 2, dadurch gekennzeichnet, daß der erste Raum an der Innenwand Rinnen (12) parallel zur Achse des Durchlasses besitzt, die mit der Außenwand der Trennkammer Belüftungskanäle bilden, wobei die Luft im Metallrohr (25) zirkuliert und in die Kanäle über Löcher (25A) in dem Rohr eindringt.
  4. Leistungsschalter nach Anspruch 2, dadurch gekennzeichnet, daß die Trennkammer (14) sich in einem isolierenden Käfig (13) befindet, der beispielsweise aus Harz ist und in dem ersten Raum liegt.
  5. Leistungsschalter nach Anspruch 4, dadurch gekennzeichnet, daß der Käfig (13) an seiner Innenwand Rinnen (13A) parallel zu seiner Achse besitzt, die mit der Wand der Trennkammer (14) Belüftungskanäle definieren, wobei die Luft in dem Metallrohr (25) zirkuliert und in die Kanäle durch Löcher (25A) im Rohr eindringt.
  6. Leistungsschalter nach einem der Ansprüche 2 bis 5, dadurch gekennzeichnet, daß die Durchschlagfestigkeit zwischen dem Metallrohr (25) und der Wand des zweiten Raums durch eine Umhüllung (27) aus einem komprimierbaren Isoliermaterial gewährleistet wird, die auf das Metallrohr (25) gesteckt und dann in den zweiten Raum gebracht wird, wobei die Montage durch die Verwendung eines isolierenden Schmiermittels erleichtert wird.
  7. Leistungsschalter nach Anspruch 6, dadurch gekennzeichnet, daß die Umhüllung (27) aus Latex ist.
  8. Leistungsschalter nach einem der Ansprüche 2 bis 7, dadurch gekennzeichnet, daß die kinematische Kette zwischen der Steuerstange (30) und der Betätigungswelle (38) einen Federmechanismus aufweist, um das Spiel aufzufangen.
  9. Leistungsschalter nach einem der Ansprüche 2 bis 7, dadurch gekennzeichnet, daß das Ende der Steuerstange einen rohrförmigen Endbereich (30A) aufweist, in den der bewegliche Stift (22) eindringt, wobei dieser Stift einen Schlitz (22A) aufweist, in dem ein erster Zapfen (22B) sitzt, der die Steuerstange durchquert, daß eine Feder (22C) sich an einer ersten mit dem Ende der Steuerstange (30) in Kontakt stehenden Scheibe und an einer zweiten Scheibe (22E) abstützt, die auf den beweglichen Stift (22) gesteckt ist und von einem zweiten, den beweglichen Stift (22) durchquerenden Zapfen (22F) gehalten wird.
  10. Leistungsschalter nach einem der Ansprüche 2 bis 9, dadurch gekennzeichnet, daß die mechanische Verbindung zwischen dem Metallrohr (25) und der Trennkammer sowie die elektrische Verbindung zwischen dem Metallrohr (25) und dem beweglichen Kontaktstift (22) über eine am zweiten Flansch (17) befestigte Muffe (15A), über einen an der Muffe (15A) und dem Rohr (25) befestigten Ring (15B) und einen Kontakt (15C) vom Balgtyp oder Buchsentyp gewährleistet ist, der sich in dem Ring befindet und den Stift (22) umgibt.
  11. Leistungsschalter nach einem der Ansprüche 2 bis 10, dadurch gekennzeichnet, daß das Endstück (26) zwei Halbringe (41, 42) aufweist, die auf das Metallrohr aufgespannt sind und am Ende des isolierenden Durchlasses (10) anliegen.
  12. Leistungsschalter nach Anspruch 11, dadurch gekennzeichnet, daß die beiden Halbringe (41, 42) Zapfen (45) aufweisen, die mit Vertiefungen im isolierenden Durchlaß (10) zusammenwirken, um das Metallrohr (25) in Drehrichtung festzuhalten.
  13. Leistungsschalter nach einem der Ansprüche 6 bis 12, dadurch gekennzeichnet, daß die Umhüllung (27) durch einen Klemmring auf dem Metallrohr (25) blockiert wird.
  14. Leistungsschalter nach einem der Ansprüche 1 bis 13, dadurch gekennzeichnet, daß die äußere Oberfläche des isolierenden Durchlasses (10) in der Zone in der Nähe des Metallprofils (4) metallbeschichtet ist.
  15. Leistungsschalter nach einem der Ansprüche 1 bis 14, dadurch gekennzeichnet, daß der Durchlaß in der Nähe des Übergangs (10C) zwischen den beiden Räumen ein Metallgitter (51A) aufweist, das in das Gießmaterial eingebettet ist und auf das Potential des Metallrohrs (25) gebracht ist.
  16. Mittelspannungszelle, dadurch gekennzeichnet, daß sie mindestens einen Leistungsschalter nach einem der Ansprüche 1 bis 15 enthält.
  17. Mittelspannungszelle nach Anspruch 16, dadurch gekennzeichnet, daß sie einen Leistungsschalter nach einem der Ansprüche 1 bis 15 enthält, der in einer Schublade (56) liegt, welche in einem Stützisolatoren (58) für einen Satz von Stromschienen (59) und Stützisolatoren (67) für einen Kabelausgang (65) aufweisenden Kasten (55A) gleitet, daß das Metallprofil, das den Leistungsschalter trägt, an zwei einander gegenüberliegenden Seiten (56A, 56B) der Schublade gelenkig befestigt ist, daß der Leistungsschalter in der geerdeten Stellung ganz in der Schublade (56) Platz findet, der dann mindestens teilweise, aber sehr weit aus dem Kasten (55A) herausgezogen werden kann.
  18. Mittelspannungszelle nach Anspruch 17, dadurch gekennzeichnet, daß der Kasten (55A) eine erste ortsfeste Klappe (61) besitzt, die eine Trennung zwischen dem die Schienen (59) enthaltenden Raum und dem die Schublade (56) enthaltenden Raum bildet.
  19. Mittelspannungszelle nach einem der Ansprüche 17 und 18, dadurch gekennzeichnet, daß der Kasten (55A) eine zweite, bewegliche Klappe (61B) enthält, die während des Betriebs des Schalters eine Lage oberhalb der ersten Klappe (61) einnimmt und, wenn der Leistungsschalter geerdet ist, einen Platz einnimmt, in dem sie zusammen mit der ersten Klappe (61) völlig den Zugang zum Raum der Stromschienen (59) vom Raum für die Schublade (56) verhindert.
  20. Mittelspannungszelle nach Anspruch 19, dadurch gekennzeichnet, daß die Bewegung der zweiten Klappe (61B) von einer Scheibe (61C) hervorgerufen wird, die durch die Drehung des Metallprofils (4) angetrieben wird und mindestens einen Gestängesatz (61F, 61G, 61H, 61I) betätigt, der mit der in den am Kasten (55A) befestigten Gleitschienen (61A) gleitenden zweiten Klappe (61B) verbunden ist.
  21. Mittelspannungszelle nach Anspruch 20, dadurch gekennzeichnet, daß die Scheibe (61C) eine Kerbe (61K) besitzt, die mit einer Klinke (61J) zur Festlegung der Scheibe zusammenwirkt, wenn die Schublade (56) herausgezogen ist, wobei die Klinke durch die Betätigung der Schublade entriegelt wird, wenn diese eingeschoben wird.
  22. Mittelspannungszelle nach einem der Ansprüche 17 bis 21, dadurch gekennzeichnet, daß die Schublade (56) ein Verschlußorgan (62) aufweist, das durch die Drehung des Leistungsschalters beim Übergang von der eingeschalteten in die ausgeschaltete Stellung betätigt wird und die Pole erdet, wenn der Leistungsschalter in seiner "Aus"-Stellung ist.
  23. Mittelspannungszelle nach einem der Ansprüche 17 bis 22, dadurch gekennzeichnet, daß die Drehung des Metallprofils (4) von einem Getriebemotor (78) bewirkt wird, der an der Schublade (56) befestigt ist und mit einem mit dem Metallprofil (4) fest verbundenen Ritzel (77) zusammenwirkt.
  24. Mittelspannungsstation mit einer Zelle (110) gemäß einem der Ansprüche 17 bis 23 und mindestens einer Zelle (120), die einen Leistungsschalter (102) nach einem der Ansprüche 1 bis 14 in Verbindung mit einem Abteil (121) enthält, in dem eine Verbindung zum Stromschienensatz hergestellt wird.
EP93400533A 1992-03-03 1993-03-02 Lasttrennschalter für hohe Nominal-Intensität und Verwendung für Zelle und für Mittel-Spannungsanlage Expired - Lifetime EP0559552B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9202511 1992-03-03
FR9202511A FR2688339B1 (fr) 1992-03-03 1992-03-03 Disjoncteur auto-sectionneur a intensite nominale elevee et application a une cellule et a un poste a moyenne tension.

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EP0559552A1 EP0559552A1 (de) 1993-09-08
EP0559552B1 true EP0559552B1 (de) 1997-01-22

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EP (1) EP0559552B1 (de)
AT (1) ATE148260T1 (de)
DE (1) DE69307560T2 (de)
ES (1) ES2096232T3 (de)
FR (1) FR2688339B1 (de)
GR (1) GR3022930T3 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7650816B2 (en) 2003-04-09 2010-01-26 Siemens Aktiengesellschaft Deflection lever

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000353460A (ja) * 1999-06-09 2000-12-19 Mitsubishi Electric Corp 遮断器
DE10224449B3 (de) * 2002-05-29 2004-02-05 Siemens Ag Elektrisches Schaltgerät
IN2014KN02943A (de) * 2012-06-12 2015-05-08 Hubbell Inc
DE102013221910A1 (de) * 2013-10-29 2015-04-30 Siemens Aktiengesellschaft Elektrischer Schalter

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3646294A (en) * 1970-12-31 1972-02-29 Itt Switch
US3824359A (en) * 1972-10-06 1974-07-16 Mc Graw Edison Co Vacuum loadbreak switch
DE2934776C2 (de) * 1979-08-28 1982-05-06 Siemens AG, 1000 Berlin und 8000 München Mittelspannungslasttrennschalter.
FR2526581B1 (fr) * 1982-05-10 1985-07-19 Merlin Gerin Dispositif de commande des poles d'un disjoncteur multipolaire haute tension
CH668334A5 (en) * 1986-08-22 1988-12-15 App Gardy Societe Anonyme Alternating current circuit breaker with vacuum chamber - sepd. by insulating layer from wall of insulator module

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7650816B2 (en) 2003-04-09 2010-01-26 Siemens Aktiengesellschaft Deflection lever

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ES2096232T3 (es) 1997-03-01
EP0559552A1 (de) 1993-09-08
FR2688339A1 (fr) 1993-09-10
DE69307560T2 (de) 1997-05-07
GR3022930T3 (en) 1997-06-30
DE69307560D1 (de) 1997-03-06
ATE148260T1 (de) 1997-02-15
FR2688339B1 (fr) 1994-04-15

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