EP0517295B1 - Schwefelhexafluoridisolierter Mittelspannungsschalter mit drei Positionen - Google Patents

Schwefelhexafluoridisolierter Mittelspannungsschalter mit drei Positionen Download PDF

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Publication number
EP0517295B1
EP0517295B1 EP92201448A EP92201448A EP0517295B1 EP 0517295 B1 EP0517295 B1 EP 0517295B1 EP 92201448 A EP92201448 A EP 92201448A EP 92201448 A EP92201448 A EP 92201448A EP 0517295 B1 EP0517295 B1 EP 0517295B1
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European Patent Office
Prior art keywords
switch
contact
arms
fixed
contacts
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EP92201448A
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English (en)
French (fr)
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EP0517295A3 (en
EP0517295A2 (de
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Giampietro Tosi
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Individual
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Priority claimed from ITMI911436A external-priority patent/IT1252615B/it
Priority claimed from ITMI911435A external-priority patent/IT1260588B/it
Priority claimed from ITMI911652A external-priority patent/IT1248067B/it
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Publication of EP0517295A2 publication Critical patent/EP0517295A2/de
Publication of EP0517295A3 publication Critical patent/EP0517295A3/en
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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
    • H01H33/02—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
    • H01H33/70—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid
    • H01H33/88—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts
    • H01H33/90—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts this movement being effected by or in conjunction with the contact-operating mechanism
    • H01H33/91—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts this movement being effected by or in conjunction with the contact-operating mechanism the arc-extinguishing fluid being air or gas
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
    • H01H31/003—Earthing switches
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/70—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid
    • H01H33/88—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts
    • H01H33/886—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts by movement of rotating pistons
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/10—Adaptation for built-in fuses
    • H01H9/102—Fuses mounted on or constituting the movable contact parts of the switch

Definitions

  • This invention relates to a medium voltage operating-isolating switch with three positions insulated in sulphur hexafluoride according to the preamble of claim 1 as well as to a compact fluid-insulated three position medium voltage operating-isolating switch according to the preamble of claim 13 (see for example FR-A-1367 073).
  • Switches of current construction and use do not offer this possibility, for example in switches of rotary contact type it is possible to earth the user but without the simultaneous possibility, when in the isolated position, of drainage between the part under tension and the user, so that a stray current can accidentally discharge onto this latter.
  • a fuse is present this cannot be earthed simultaneously upstream and downstream.
  • a further separate parallel device must be provided for earthing that region upstream or downstream of the fuse which is not earthed.
  • EP 0 201 695 is known a three-pole operating-isolating switch, insulated in SF 6 , with three operating positions, namely closed, isolated and earthed positions, in which a separated control system is provided for earthing the switch.
  • This line contact switch has a non-visible electric contact for earthing, since this electric contact is sloped with respect a vertical axis of the switch.
  • a visible isolator with a three-position rotary blade contact is combined with the operating switch, and both have to be operated both for putting the switch on-load and for earthing the user.
  • a further separate device is in fact provided for earthing upstream and downstream of the fuse.
  • line contact switches Although other line contact switches have a visible isolator for earthing, they have to comprise a second device which is also visible and comprises a second inspection door. If a fuse is present, this second device is doubled for earthing upstream and downstream of the fuse.
  • CH 341 209 describes a high voltage electro-pneumatic operating-isolating switch of the type straight-movement, in which two electric contacts determine two separate different operating positions, namely closed and isolated positions.
  • a spurt of compressed air is directed onto the contacts and into the so-called tulip element by a pumping device (in particular, by an axial bellows) in order to prevent eddy currents and voltaic arcs.
  • cylinder-piston pumping devices are associated with the moving contacts arranged on a relative arm by means of hinged levers, to feed fluid onto the cooperating contacts or into the insulating nozzle containing the so-called tulip element.
  • the contacts and pumping device are arranged one after the other but at a certain distance apart, because of which during its operation the pumping element can be soiled with carbon-containing residues and consequently discharge to earth, in addition to having the drawbacks of the previously described switches.
  • An object of the present invention is to provide a medium voltage operating-isolating switch with three positions insulated in sulphur hexafluoride which solves the aforesaid problems in terms of positioning, single operation and constructional simplicity of the pole switch with or without a fuse.
  • a further object is to provide a switch with maximum possible visibility of isolation or effective earthing.
  • a further but not final object is to provide a switch the component parts of which do not require special positioning within the containing frame, but instead can be directly mounted away from it before insertion.
  • a further object is to provide a switch in which there is a reduced possibility of the formation of carbon-containing residues, with the danger of possible discharges to earth.
  • a medium voltage operating-isolating switch with three positions insulated in sulphur hexafluoride comprises essentially a set of three insulating base support elements or insulators 11 for a set of three poles mounted on a support beam 12.
  • An upper fixed contact 14 with an associated tulip element 16 comprising a male arcing contact 17 and contained in an insulating nozzle 15 are fixed respectively onto each support element 11, which extends upperly into a pumping cylinder 13.
  • the fixed contact 14 is connected in known manner to a respective bus bar 18.
  • the support element 11 also carries a lower contact 19 connected to an earthing plate 21 via a through insulator 20.
  • a third intermediate contact 22 is fixed to the support element 11 and is secured to a U-piece 23, in holes 24 of which there is pivoted a T-shaped arm 25 in the form of two spaced-apart facing plates, carrying at its free end a pair of arcing contacts 26.
  • cup springs 45 Electrical contact between the U-piece 23 and the arm 25 is ensured by cup springs 45.
  • This assembly forms a moving contact which is connected via a through insulator 43 to a current inlet or outlet.
  • the pivoting is provided by a shaft 27 of insulating material which passes through each of the three poles, is supported on the support elements 11, and supports the cup springs 45 in addition to the U-pieces 23 and the arm 25.
  • the arm 25 is also connected to and its position controlled by a second insulating shaft 28, which also passes through all three arms of the moving contacts to act as a pivot.
  • the arm 25 is rotated by two insulating rods 29 which emerge from a sealed metal container 30 containing sulphur hexafluoride and from metal seal bellows 31, and are controlled by a quick snap-engagement mechanism for the three positions, which is indicated overall by 32 and can be operated from the outside of the front of the switch by a rod, not shown.
  • This device converts rotation into a linear movement determining the three operating positions, namely closed, isolated and earthed.
  • two insulating levers 33 are provided, each having a pair of through holes 34 and 35 through which the shafts 27 and 28 are inserted.
  • the levers 33 are angular and at their free end they are connected by a pin 36 to a pair of second levers 37 which move a piston 38 connected to them by a further pin 39.
  • a metal draining blade 44 of equivalent shape has to be arranged between the support element 11 and the cylinder 13 to prevent any current circulation and passage between the isolated parts.
  • Such a structure provides a simple operating-isolating switch without fuses.
  • a bar 41 joining three contacts 42 on the support elements is mounted in a suitable seat 40 in the lower part of the support element 11 at a sufficient distance from the lower contact 19 to ensure the necessary isolation required by the regulations for the relative class, and is earthed as in the case of the beam 12.
  • the lower contact 19 is completely isolated by eliminating the through insulator 20 and the through insulator 43 and connecting the two contacts 22 and 19 together downstream and upstream of a fuse 46.
  • the fuse outlet is again connected to a through insulator entirely similar to 43.
  • each T-shaped arm 25 has to carry a single contact 47 for engagement with said contacts 42.
  • Both the switch provided with only the fixed contacts 19 and moving contacts 26 and the switch provided with said contacts and with further fixed contacts 42 and moving contacts 47 are diagrammatically represented in the schematics of Figures 8 and 9 in the isolated position. These schematics again show that earthing can be achieved by a single arm carrying the moving contact, and that if a fuse is present earthing can be achieved both upstream and downstream of the fuse, again by a single arm carrying moving contacts.
  • the switch is provided with fuses ( Figure 3), according to a preferred embodiment of the present invention the fuses 46 are positioned horizontally in an extractable drawer 50 aligned below the insulators coaxial with the three constituent poles of the switch. This positioning of the fuses allows them to be easily extracted and replaced frontally.
  • Figures 4 and 6 show how the switch of the present invention can be comfortably assembled in all its essential parts on a rear beam 12 in the workshop.
  • the beam has merely to be fixed to the interior of the panel structure and the relative conductors connected. This thus eliminates the need for arranging the contacts or special connectors for the insulated support elements in predetermined positions within the panel.
  • Figures 10-13 show a further medium voltage operating-isolating switch with three positions insulated in sulphur hexafluoride according to an other preferred embodiment of the present invention in which the set of three insulating base support elements 11 is arranged transversely to the panel.
  • equal reference numerals indicate equal elements.
  • the fixed contact 14 is connected in known manner to a respective bus bar, not shown, and the through insulator 20 to an earthing plate, not shown.
  • the pivoting is achieved by a shaft 27 of insulating material which is inserted through each of the three poles and is supported by the U-pieces 23 and the support elements 11.
  • the arms 25 of the three poles are fixed by pins to the shaft 27, coaxial to which there are also the springs 45.
  • the arms 25 are rotated by a flanged extension 128 thereto, which is connected to a complementary flange 124 also extending into a shaft portion emerging from a sealed metal container, not shown, containing the sulphur hexafluoride.
  • a quick snap-action mechanism indicated overall by 32, for engaging the three positions.
  • the upper front part of the panel comprises inspection doors 48 and seats 49 for the insertion of the operating lever (not shown) to be associated with each quick snap-action mechanism 32 to switch between the three positions of the moving contacts 26 and optionally 47 of the switch.
  • the switch is provided with fuses ( Figures 12 and 13), according to a preferred embodiment of the present invention the fuses 46 are positioned horizontally in an extractable drawer 50 aligned below the insulators and the three constituent poles of the switch. This positioning of the fuses also allows them to be easily extracted and replaced frontally.
  • a further compact three-position medium voltage operating-isolating switch insulated with fluid such as sulphur hexafluoride comprises essentially a set of three insulating base support elements or insulators 210, 211 of T-shape with curved arms and a widened base, mounted on two rear support ties 212, for example for the set of three poles.
  • Each support element is of specular box type and consists of two mutually complementary parts 210 and 211 connected together by connection means which in the illustrated example consist of holes 213 and relative projecting pins 214 on one and the other of the parts 210, 211.
  • This connection also fixes an upper fixed contact 215 with an associated male arcing contact 216, and a lower contact 217 with an associated male arcing contact 218.
  • the fixed contact 215 is connected in known manner to a respective bus bar 219, whereas the lower contact 217 is connected via a through insulator 220 to an earthing plate 221.
  • the support element 210, 211 When formed, the support element 210, 211 also carries in a hollow part of its widened base a third intermediate contact 222 which is fixed to the support element 210, 211 by a U-piece 223 closed lowerly and provided with pin extensions 224 on which there is pivoted a hollow cylindrical support 225 of insulating material for a telescopic arm connected to the intermediate contact 222.
  • the pin extensions 224 lie within the cylinder 225 and are maintained rigid with a first fixed expandable outer cylindrical portion 227 of said telescopic arm. Electrical contact is ensured by cup springs 235 provided within recesses 236 formed in the pin extensions 224 and interacting between the support element 210, 211 and said recesses 236.
  • a second cylindrical portion 228 is slidingly guided within said fixed portion 227 and carries at its free end, rigidly joined to its interior, a tulip contact element 229 acting as a female arcing contact. The outer part of this free end of the second portion 228 is supported within an annular support element 230 which is pivoted at 226 within a first end of two half-arms 231 of insulating material.
  • the other end of the two half-arms 231 is provided with a through hole 232 and is pivoted to the support element 210, 211 in further holes by a central shaft 233, which is also the operating shaft.
  • a quick snap-action mechanism 237 is connected to the shaft 233 in a lateral position on one side.
  • the annular support element 230 comprises a front hole 234 constituting the emission portion for the fluid, such as sulphur hexafluoride, which quenches the arc and is contained in the expandable chamber defined by the two portions 227, 228 of the telescopic arm.
  • the fluid such as sulphur hexafluoride
  • This described telescopic arm assembly forms a moving contact which is connected via a through insulator 243 to a current inlet or outlet.
  • through holes which are cut and open towards the outside to separate portions of the support elements, are provided to receive metal draining bars 244 of equivalent shape to the holes for preventing any current circulation and passage between the parts when isolated.
  • Such a structure forms a simple compact fuse-less operating-isolating switch of fluid type which by making the cylinder pumping element for the fluid, such as sulphur hexafluoride, rigid with and incorporated in the moving arm prevents deposition of any carbon-containing residues and hence avoids operational defects and discharges to earth.
  • fluid such as sulphur hexafluoride
  • U-shaped contact elements 239 of bar form are mounted on the lower part of the support element 210, 211 in correspondence with holes 238.
  • the sides of the contact elements 239 are elastically yieldable and are mounted on the lower support tie 212, with their free ends facing a slot 240 formed centrally in two halves between the two support elements 210, 211.
  • Into this slot 240 there is inserted a free end of an open L-shaped contact element 241 which is fixed in proximity to its other end to the body of the half-arms 231.
  • the other end of the contact element 241 abuts against a contact extension 242 which is inserted radially into the top of the annular support element 230 so that it makes contact with the free end of the second portion 228 of the telescopic arm.
  • each telescopic arm 227, 228 must comprise a contact extension 242 and a contact element 241 rigid with the half-arms 231 for engagement with said bar contact elements 239.
  • Both the switch provided with only the fixed and moving contacts and the switch provided with said contacts and with further fixed and moving contacts are diagrammatically represented in the schematics of Figure 14 on the front of an electrical panel 250 in the isolated position. These schematics again show that earthing can be achieved by a single arm carrying the moving contact, and that if a fuse is present earthing can be achieved both upstream and downstream of the fuse again by a single arm carrying moving contacts.
  • the switch is provided with fuses ( Figure 16), according to a preferred embodiment of the present invention the fuses 246 are positioned horizontally in an extractable drawer 250 aligned below the insulators coaxially with the three constituent poles of the switch. This positioning of the fuses also allows them to be easily extracted and replaced frontally.
  • the switch of the present invention can be assembled in all its essential parts on the two rear ties 212 in the workshop. In this respect, when the switch has been assembled and completed on said ties, it has merely fixed on to be the interior of the panel structure and the relative conductors connected. This thus eliminates the need for arranging the contacts or special connectors for the insulated support elements in predetermined positions within the panel.
  • each insulated support element and each rotary arm is suitable for use in a switch without or with fuses, so that the additional moving and fixed contacts can then be quickly fitted to them.

Landscapes

  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
  • Suspension Of Electric Lines Or Cables (AREA)
  • Switch Cases, Indication, And Locking (AREA)
  • Transformers For Measuring Instruments (AREA)
  • Fuses (AREA)
  • Pinball Game Machines (AREA)
  • Circuit Breakers (AREA)

Claims (19)

  1. Mittelspannungs-Betätigungs-Isolations-Schalter mit drei Positionen, umfassend einen Satz von drei Polen, wobei jeder Pol einen ortsfesten Kontakt (14) und einen beweglichen Kontakt (26) umfaßt, wobei der ortsfeste Kontakt (14) innerhalb einer isolierenden Düse (15) ein zugeordnetes Tulpenelement (16) trägt, das einen Lichtbogen- bzw. Abreißkontakt (17) enthält, und mit einer jeweiligen Busstange bzw. -schiene (18) verbunden ist, wobei der bewegliche Kontakt (26) auf einem drehbar gelagerten Arm (25) angeordnet ist, welcher zwischen einer ersten, geschlossenen Position in Eingriff mit dem ortsfesten Kontakt (14), einer zweiten, isolierten Position und einer dritten, geerdeten Position verdrehbar ist, und eine Zylinder-Kolben-Einrichtung (13, 38), die über einen isolierten Hebel (33) mit jedem der die beweglichen Kontakte (26) tragenden Arme (25) zum Pumpen des Schwefelhexafluorids in die isolierende Düse (15) verbunden ist, dadurch gekennzeichnet, daß der Schalter in Schwefelhexafluorid isoliert ist und der Lichtbogen- bzw. Abreißkontakt (17) ein hervorstehender Kontakt ist, daß der bewegliche (26) und ortsfeste Kontakt (14) von jedem Pol des Satzes von drei Polen auf einem von drei Isolationsbasishalte- bzw. -trägerelementen (11) angeordnet sind, die an einem einzigen bzw. einzelnen Halteträger (12) befestigt sind, und daß ein metallisches Ableitungselement (44) zwischen jedem der isolierenden Halte- bzw. Trägerelemente (11) und den Pumpzylindern (13) vorgesehen ist.
  2. Schalter nach Anspruch 1, dadurch gekennzeichnet, daß die drei Arme (25), welche die beweglichen Kontakte (26) tragen, zwei voneinander beabstandete Durchgangslöcher (34, 35) umfassen, durch welche ein Paar Schafte (27, 28) aus isolierendem Material eingefügt sind, wobei einer (28) von diesen letzteren eine daran drehbar gelagerte isolierende Stange (29) hat, welche aus einem das Schwefelhexafluorid enthaltenden isolierten Behälter (30) hervorgeht, um mit einem Schnellschnappwirkungsmechanismus (32) zum Einrücken der drei Positionen verbunden zu sein, während der andere (27) des Paars von Schaften einen Satz von drei Hebeln (37) zum Betätigen von Kolben (38) des Zylinders (13) trägt.
  3. Schalter nach Anspruch 1, dadurch gekennzeichnet, daß weitere Kontakte (19, 42; 26, 47) an den isolierenden Halte- bzw. Trägerelementen (11) und den Armen (25) Erdungssicherungen (46) bzw. zum Erden von Sicherungen (46), die mit dem Schalter verbunden sind, angebracht werden können.
  4. Schalter nach Anspruch 1, dadurch gekennzeichnet, daß die Arme (25) aus zwei Platten bestehen, welche über ein U-Teil (23) an einem entsprechenden bzw. jeweiligen Halte- bzw. Trägerelement drehbar gelagert sind, wobei der Kontakt zwischen den beiden Platten der Arme (25) und dem U-Teil (23) durch Federn (45), die koaxial auf dem sich drehenden Schaft (27) angeordnet sind, bewerkstelligt ist.
  5. Isolierte Platte, umfassend wenigstens einen Schalter gemäß den vorhergehenden Ansprüchen, dadurch gekennzeichnet, daß sie eine vordere Tür (48) zum Beobachten der drei Positionen der Bestandteilselemente der drei Pole umfaßt.
  6. Isolierte Platte nach Anspruch 5, dadurch gekennzeichnet, daß sie eine frontwärts ausziehbare horizontale Schublade (50) umfaßt, die unterhalb des Schalters positioniert ist und drei Sicherungen (46), axial fluchtend mit den drei Polen und unterhalb der drei Pole, enthält.
  7. Isolierte Platte nach Anspruch 5, dadurch gekennzeichnet, daß sie in einer oberen vorderen Position einen Sitz (49) zum Einfügen bzw. Einführen eines Betätigungshebels für den Schnellschnappwirkungsmechanismus (32) umfaßt.
  8. Schalter nach Anspruch 1, dadurch gekennzeichnet, daß die die beweglichen Kontakte (26) tragenden drei Arme (25) von bogenförmiger bzw. gekrümmter Form sind, und daß sie voneinander beabstandet auf einem Durchgangsschaft (27) aus isolierendem Material befestigt sind, welcher innerhalb von jedem der drei Halte- bzw. Trägerelemente (11) angelenkt bzw. drehbar gelagert ist und aus einem das Schwefelhexafluorid enthaltenden isolierenden Behälter hervorgeht, um mit einem Schnellschnappwirkungsmechanismus (32) zum Einrücken der drei Positionen verbunden und quer zu den drei Polen angeordnet zu sein, wobei mit dem Schaft (27) ein Satz von drei Hebeln (37) zum Betätigen von Kolben (38) der Zylinder (13) verbunden ist
  9. Schalter nach Anspruch 1, dadurch gekennzeichnet, daß weitere Kontakte (19, 42; 26, 47) für Erdungssicherungen bzw. zum Erden von Sicherungen, die mit dem Schalter verbunden sind, an den isolierenden Haltebzw. Trägerelementen (11) und den Armen (25) angebracht werden können.
  10. Schalter nach Anspruch 1, dadurch gekennzeichnet, daß jeder der Arme aus zwei Platten besteht, die an dem Schaft befestigt und an einem entsprechenden bzw. jeweiligen Halte- bzw. Trägerelement über ein U-Teil (23) angelenkt bzw. drehbar gelagert sind, wobei der Kontakt zwischen den beiden Platten der Arme (25) und dem U-Teil (23) durch Federn (45), die koaxial auf dem sich drehenden Schaft angeordnet sind, bewerkstelligt ist.
  11. Isolierte Platte, umfassend wenigstens einen Schalter gemäß irgendeinem der Ansprüche 8 bis 10, dadurch gekennzeichnet, daß sie eine frontwärts ausziehbare horizontale Schublade (50) umfaßt, die unterhalb des Schalters positioniert ist und einen Satz von drei Sicherungen (46), welche parallel zu der Achse der drei Pole angeordnet sind, enthält.
  12. Isolierte Platte nach Anspruch 11, dadurch gekennzeichnet, daß sie in einer oberen vorderen Position einen Sitz (49) zum Einfügen bzw. Einführen eines Betätigungshebels für den Schnellschnappwirkungsmechanismus (32) umfaßt.
  13. Kompakter fluidisolierter Dreipositions-Mittelspannungs-Betätigungs-Isolations-Schalter, umfassend einen Satz von drei Polen, wobei jeder Pol einen ortsfesten Kontakt (215) und einen beweglichen Kontakt (229, 242) umfaßt, wobei der ortsfeste Kontakt (215) einen zugeordneten Lichtbogen- bzw. Abreißkontakt (216) trägt und der bewegliche Kontakt (229, 242) auf einem drehbar gelagerten Arm (227, 228) angeordnet ist, der zwischen einer ersten, geschlossenen Position in Eingriff mit dem ortsfesten Kontakt (215), einer zweiten, isolierten Position und einer dritten, geerdeten Position verdrehbar ist, und eine Zylinder-Pumpeinrichtung zum Pumpen des Fluids auf den ortsfesten Kontakt (215), dadurch gekennzeichnet, daß der Lichtbogen- bzw. Abreißkontakt (216) ein hervorstehender Lichtbogen bzw. Abreißkontakt ist, daß der bewegliche und ortsfeste Kontakt von jedem Pol des Satzes von drei Polen auf einem von drei Isolationsbasisträger- bzw. -halteelementen (210, 211), die an Befestigungshaltern (212) befestigt sind, angeordnet sind, wobei jeder der die beweglichen Kontakte (229, 242) tragenden Arme (227, 228) vom teleskopischen bzw. ausziehbaren bzw. zusammenschiebbaren Typ ist und die beweglichen Kontakte (216) ihm durch bzw. über einen isolierenden Hebel (231) zugeordnet sind, welcher mit einer Betätigungsstange verbunden ist, wobei die Zylinder-Pumpeinrichtung innerhalb des drehbaren Arms (227, 228) vorgesehen ist und daß wenigstens ein metallisches Ableitungselement (244) auf bzw. in jedem der isolierenden Halte- bzw. Trägerelemente (210, 211) zwischen dem Teil, welcher den ortsfesten Kontakt (215) trägt, und dem übrigen Teil des Halte-bzw. Trägerelements (210, 211) vorgesehen ist.
  14. Schalter nach Anspruch 13, dadurch gekennzeichnet, daß die isolierenden Halte- bzw. Trägerelemente vom Kastentyp in der Form von zwei komplementären Teilen (210, 211) sind, welche durch gegenseitige Befestigungsmittel (213, 214) aneinander befestigt werden können.
  15. Schalter nach Anspruch 13, dadurch gekennzeichnet, daß jeder der Arme aus einem Träger bzw. Halter (225) besteht, der an einem entsprechenden bzw. jeweiligen Träger- bzw. Halteelement (210, 211) mittels eines U-Teils (223) drehbar gelagert ist, wobei der Träger bzw. Halter zwei gegenseitig expandierbare zylindrische Teile (227, 228) trägt, wobei wenigstens eines der beiden ein Tulpenkontaktelement (229) hält bzw. trägt, wobei der Kontakt zwischen dem U-Teil (223) und den expandierbaren zylindrischen Teilen (227, 228) durch Federn (235), die koaxial zu einer Drehachse (224) angeordnet sind, mittels deren der Halter bzw. Träger (225) drehbar an dem U-Teil (223) gelagert ist, bewerkstelligt ist.
  16. Schalter nach Anspruch 15, dadurch gekennzeichnet, daß ein freies Ende des drehbar gelagerten Trägers bzw. Halters (225) in einem ringförmigen Träger bzw. Halteelement (230) gehalten ist, das an den Enden von Halbarmen (231) aus isolierendem Material drehbar gelagert ist, welche mittels eines Betätigungsschafts (233), der durchgehend an dem anderen Ende der Halbarme (231) befestigt und mit einem Schnellschnappwirkungsmechanismus (237) verbunden ist, veranlaßt werden können, sich in die drei Positionen zu drehen.
  17. Schalter nach Anspruch 13, dadurch gekennzeichnet, daß weitere Kontakte (217, 239; 229, 242) für Erdungssicherungen (246) bzw. zum Erden von Sicherungen , die mit dem Schalter verbunden sind, in komplementären Positionen an den isolierenden Halte- bzw. Trägerelementen (210, 211) und den teleskopischen Armen (227, 228) angebracht werden können.
  18. Schalter nach Anspruch 17, dadurch gekennzeichnet, daß die weiteren Kontakte für Erdungssicherungen bzw. das Erden der Sicherungen (246) jeweils ein Kontaktelement (241), das auf Halbarmen (231) gehalten ist, die an isolierenden Elementen der teleskopischen Arme (227, 228) angelenkt bzw. drehbar gelagert sind, eine Kontaktverlängerung (242), welche sich von den beweglichen Kontakten erstreckt, und Schienenkontaktelemente (239), die an den Halte- bzw. Trägerelementen (210, 211) befestigt sind, sind, wobei das Kontaktelement (241), die Kontaktverlängerung (242) und die Schienenkontaktelemente (239) nur in der dritten, geerdeten Position elektrisch miteinander verbunden sind.
  19. Isolierte Platte, umfassend wenigstens einen Schalter gemäß den Ansprüchen 13 bis 18, dadurch gekennzeichnet, daß sie eine frontwärts ausziehbare horizontale Schublade (250) umfaßt, die unter dem Schalter positioniert ist und einen Satz von drei Sicherungen (246), welche mit den drei Polen verbunden sind, enthält.
EP92201448A 1991-05-24 1992-05-21 Schwefelhexafluoridisolierter Mittelspannungsschalter mit drei Positionen Expired - Lifetime EP0517295B1 (de)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
ITMI911435 1991-05-24
ITMI911436A IT1252615B (it) 1991-05-24 1991-05-24 Apparecchiatura di manovra-sezionatura a media tensione a tre posizioni isolate in esafluoruro di zolfo.
ITMI911435A IT1260588B (it) 1991-05-24 1991-05-24 Apparecchiatura di manovra-sezionatura a media tensione a tre posizioni isolate in esafluoruro di zolfo
ITMI911436 1991-05-24
ITMI911652 1991-06-17
ITMI911652A IT1248067B (it) 1991-06-17 1991-06-17 Apparecchiatura di manovra-sezionatura compatta isolata a fluido a media tensione a tre posizioni.

Publications (3)

Publication Number Publication Date
EP0517295A2 EP0517295A2 (de) 1992-12-09
EP0517295A3 EP0517295A3 (en) 1993-03-10
EP0517295B1 true EP0517295B1 (de) 1997-12-17

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EP92201448A Expired - Lifetime EP0517295B1 (de) 1991-05-24 1992-05-21 Schwefelhexafluoridisolierter Mittelspannungsschalter mit drei Positionen

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EP (1) EP0517295B1 (de)
AT (1) ATE161356T1 (de)
DE (1) DE69223549T2 (de)
ES (1) ES2113401T3 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3719824A2 (de) * 2019-04-02 2020-10-07 Pommier Vorrichtung zur lichtbogenunterbrechung

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* Cited by examiner, † Cited by third party
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WO2008015032A1 (de) * 2006-07-31 2008-02-07 Siemens Aktiengesellschaft Verschlussdeckel für ein sicherungsgehäuse einer elektrischen schaltanlage
CN101496125B (zh) * 2006-07-31 2012-03-14 西门子公司 用于电开关设备安全壳体的封闭盖
EP2312603A1 (de) * 2009-10-15 2011-04-20 ABB Technology AG Drehbarer Lasttrennschalter
CN102157296B (zh) * 2011-03-18 2013-06-12 湖州电力局 高压双电源切换组合开关
EP4057315B1 (de) 2021-03-11 2024-10-23 ABB Schweiz AG Schaltersicherungsmodul
EP4057314B1 (de) * 2021-03-11 2024-06-26 ABB Schweiz AG Schaltersicherungsmodul

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE850315C (de) * 1946-05-21 1952-09-22 Forges Ateliers Const Electr Pneumatischer Hochspannungsschalter mit Selbstverdichtung
DE8115913U1 (de) * 1981-05-29 1981-08-06 Fritz Driescher Spezialfabrik für Elektrizitätswerksbedarf, 5144 Wegberg Gasisoliertes metallgekapseltes Schaltfeld
EP0093225A2 (de) * 1982-04-23 1983-11-09 Felten & Guilleaume Energietechnik AG Gekapselte, mit einem Isoliergas gefüllte Mittelspannungsschaltanlage
EP0201695A2 (de) * 1985-04-16 1986-11-20 BROWN,BOVERI & CIE Aktiengesellschaft Lasttrennschalter und Schaltanlage mit diesem Lasttrennschalter

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Publication number Priority date Publication date Assignee Title
DE976331C (de) * 1954-09-03 1963-07-04 Frobert Michaelis Dipl Ing Druckluftschalter mit selbsterzeugter Blasluft
CH337905A (de) * 1955-12-16 1959-04-30 Bbc Brown Boveri & Cie Mehrpoliger Schalter mit Trennwänden
FR1367073A (fr) * 1963-07-10 1964-07-17 Cem Comp Electro Mec Interrupteur-sectionneur pour installations électriques de préférence préfabriquées
FR2655768B1 (fr) * 1989-12-13 1993-10-08 Merlin Gerin Interrupteur tripolaire a haute tension et a isolement gazeux.

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE850315C (de) * 1946-05-21 1952-09-22 Forges Ateliers Const Electr Pneumatischer Hochspannungsschalter mit Selbstverdichtung
DE8115913U1 (de) * 1981-05-29 1981-08-06 Fritz Driescher Spezialfabrik für Elektrizitätswerksbedarf, 5144 Wegberg Gasisoliertes metallgekapseltes Schaltfeld
EP0093225A2 (de) * 1982-04-23 1983-11-09 Felten & Guilleaume Energietechnik AG Gekapselte, mit einem Isoliergas gefüllte Mittelspannungsschaltanlage
EP0201695A2 (de) * 1985-04-16 1986-11-20 BROWN,BOVERI & CIE Aktiengesellschaft Lasttrennschalter und Schaltanlage mit diesem Lasttrennschalter

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3719824A2 (de) * 2019-04-02 2020-10-07 Pommier Vorrichtung zur lichtbogenunterbrechung

Also Published As

Publication number Publication date
ES2113401T3 (es) 1998-05-01
ATE161356T1 (de) 1998-01-15
EP0517295A3 (en) 1993-03-10
EP0517295A2 (de) 1992-12-09
DE69223549D1 (de) 1998-01-29
DE69223549T2 (de) 1998-07-23

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