EP2146361B1 - Dispositif de commutation pour un interrupteur électrique, notamment un interrupteur à moyenne tension - Google Patents

Dispositif de commutation pour un interrupteur électrique, notamment un interrupteur à moyenne tension Download PDF

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Publication number
EP2146361B1
EP2146361B1 EP09005970.0A EP09005970A EP2146361B1 EP 2146361 B1 EP2146361 B1 EP 2146361B1 EP 09005970 A EP09005970 A EP 09005970A EP 2146361 B1 EP2146361 B1 EP 2146361B1
Authority
EP
European Patent Office
Prior art keywords
disc
blade
axis
switching device
plate
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.)
Not-in-force
Application number
EP09005970.0A
Other languages
German (de)
English (en)
Other versions
EP2146361A3 (fr
EP2146361A2 (fr
Inventor
Jens-Karsten Dipl.-Ing. Laskowsky
Lothar Dipl.-Ing. Pech
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Areva Energietechnik GmbH
Original Assignee
Areva Energietechnik GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Areva Energietechnik GmbH filed Critical Areva Energietechnik GmbH
Publication of EP2146361A2 publication Critical patent/EP2146361A2/fr
Publication of EP2146361A3 publication Critical patent/EP2146361A3/fr
Application granted granted Critical
Publication of EP2146361B1 publication Critical patent/EP2146361B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/32—Driving mechanisms, i.e. for transmitting driving force to the contacts
    • H01H3/46—Driving mechanisms, i.e. for transmitting driving force to the contacts using rod or lever linkage, e.g. toggle
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
    • H01H31/003—Earthing switches
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/36—Contacts characterised by the manner in which co-operating contacts engage by sliding
    • H01H1/42—Knife-and-clip contacts
    • 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
    • H01H33/42—Driving mechanisms

Definitions

  • the invention relates to a switching device for an electrical switching unit, in particular a medium-voltage switchgear.
  • a disadvantage of the known earthing switch is that the drive rod requires a high mechanical complexity and must be created separately for the respective embodiment of the earthing switch.
  • US 3,459,905 A shows a switchgear with a metal housing, supply switch blades and earthing switch blades.
  • To prevent grounding by means of a grounding switch blade locking means are provided. These locking means prevent grounding by means of the earthing switch blade when the associated food switch blade is closed.
  • the grounding switch blade is moved by means of a tool which is attached to an axis of rotation of the earthing switch blade.
  • JP 2003257290 A shows a switchgear for performing safe switching operations.
  • the switching operation is performed by means of a motor.
  • a connecting rod is brought to a substantially axial movement.
  • the connecting rod is connected by means of a hinge to a deflection component, which ensures that an actuator rod for a vacuum switch performs an axial movement whose direction is oriented counter to the direction of movement of the connecting rod.
  • US 4,202,028 discloses a manually operable coupling mechanism.
  • An operating lever is rotatably mounted about an axis and connected at one point with another component, which is also mounted about a further axis of rotation.
  • the further component is connected by means of rods so with an additional component, so that the additional component performs substantially the same movement as the other component.
  • DE 1106843 B shows a drive arrangement for switching devices in electrical switchgear.
  • a rotational movement of a drive shaft leads by means of two pull / push rods to a rotational movement of a switching shaft.
  • the drive arrangement is used in particular for a deflection of the rotational movement by 90 °.
  • JP 8264076 A shows a manually operated grounding device. On a manually driven shaft levers are arranged, which move a switch element of a switch axially.
  • the object of the invention is to provide a switching device which has a simple structure and can be used as flexibly as possible.
  • the invention solves this problem by a switching device according to claim 1.
  • the switching device comprises the following components: a disc pivotable about a disc axis and swingable from an operator to a second position by an operator, a plate pivotable about a disc axis and coupled to the disc via two rods, that a pivoting movement of the disc leads to a similar pivoting movement of the plate, and a knife pivotable about a knife axis, which is coupled to the plate via two rods such that a pivoting movement of the disc leads to a pivoting movement of the knife.
  • the switching device according to the invention has an extremely simple mechanical structure and can thus be manufactured and assembled with little effort. Furthermore, the switching device according to the invention has a high reliability due to its simple structure.
  • Another significant advantage of the switching device according to the invention consists in the fact that at least a part of the components of the switching device identical to different embodiments of the switching devices can be used.
  • the switching device according to the invention is modular. Thus, the cost of manufacturing and storage of components are significantly reduced.
  • the two rods, which are coupled to the knife are arranged either approximately parallel to each other, so that the pivoting movement of the disc and the knife are aligned in the same direction, or cross each other, so that the pivoting movement of the disc and of the knife are oriented in opposite directions.
  • the disk can be actuated by the operator, in particular by means of a rod, in an approximately vertical direction from top to bottom. This downward pressing of the lever is particularly easy for an operator and without a great deal of effort possible.
  • a spring drive in which a spring is tensioned during a transition from one to the other position of the disc, and in which the pivoting movement of the blade is supported by the spring at an opposite transition.
  • FIG. 1 shows a schematic view of a first embodiment of a switching device according to the invention for an electrical switching unit of a medium-voltage switchgear
  • FIG. 2 shows a schematic view of a second embodiment of a switching device according to the invention for an electrical switching unit of a medium-voltage switchgear.
  • An electrical switchgear in the medium-voltage range is constructed from a plurality of juxtaposed switching units.
  • Each of the switching units has a plurality of modules arranged one above the other, in which, for example, bus bars or circuit breakers or three-position switches or the like are accommodated.
  • the lowest module of a switching unit is often designed as a so-called cable outlet, in which in particular sockets for electrical cables and voltage and / or current transformers are connected and housed.
  • a switching device a so-called earthing switch is provided, which is manually switchable from the outside from a non-earth to a grounded position and vice versa.
  • FIG. 1 a grounding switch 10 is shown, which is housed in the interior 11 of a cable outlet. All components of the earthing switch 10 described below are connected to a housing 12 of the cable outlet and are thus grounded.
  • the earthing switch 10 has a disc 15 which is pivotable about a disc axis 16.
  • the disk 15 is preferably circular.
  • the axis 16 is disposed in the interior 11 of the cable outlet and held in a manner not shown on the grounded housing 12 of the cable outlet. A portion of the disc 15 projects beyond the housing 12 of the cable outlet to the outside.
  • an outwardly projecting rod 17 is connected to the disc 15. With this rod 17, the disc 15 can be pivoted by an operator around the disc axis 16 back and forth.
  • a plate 20 is provided in the interior 11 of the cable outlet, which is pivotable about a plate axis 21.
  • the plate axis 21 and the disc axis 16 are aligned parallel to each other.
  • the plate axis 21 is held in a manner not shown on the grounded housing 12 of the cable outlet.
  • two axes 25, 26 are present, which are arranged symmetrically and at the same distance from the disc axis 16.
  • two axes 27, 28 are also present, which are arranged symmetrically and at the same distance from the plate axis 21.
  • the distance between the two axes 25, 26 of the disc axis 15 and the distance between the two axes 27, 28 of the plate axis 21 is preferably about the same size.
  • one of the two axes 25, 26 on the disc 15 is pivotally connected via a rod 31, 32 with one of the two axes 27, 28 on the plate 20.
  • the two rods 31, 32 are aligned parallel to each other. Together with an imaginary connecting line between the axes 25, 26 and the axes 27, 28, the rods 31, 32 are part of a parallelogram.
  • two further axes 34, 35 are included, which are arranged symmetrically and equidistant from the plate axis 21.
  • the distance of the two axes 34, 35 from the plate axis 21 and the distance of the two axes 27, 28 from the plate axis 21 is preferably different. By an appropriate choice of these different distances can be realized by means of the plate 20, a translation which is not equal to "1". This will be explained below.
  • a knife 40 is provided in the interior 11 of the cable outlet, which is pivotable about a knife axis 41.
  • the knife axis 41, the disk axis 16 and the disk axis 21 are aligned approximately parallel to one another.
  • the knife axis 41 is held in a manner not shown on the grounded housing 12 of the cable outlet.
  • two axes 43, 44 are present, which are arranged symmetrically and equidistant from the blade axis 41.
  • the distance between the two axes 43, 44 of the knife axis 41 and the distance between the two axes 34, 35 of the plate axis 21 is preferably about the same size.
  • one of the two axes 34, 35 on the plate 20 is connected via a rod 47, 48 each having one of the two axes 43, 44 of the blade 40 pivotally connected.
  • the two rods 47, 48 are aligned parallel to each other. Together with an imaginary connecting line between the axles 34, 35 and the axles 43, 44, the rods 47, 48 are part of a parallelogram.
  • All axes 25, 26, 27, 28, 34, 35, 43, 44 are approximately parallel to each other and approximately parallel to the other axes 16, 21, 41 aligned.
  • the knife 40 is approximately T-shaped, wherein the knife axis 41 approximately at the intersection of the two legs and the two axes 43, 44 are arranged approximately at the free ends of the shorter leg.
  • the longer leg is free.
  • FIG. 1 In the FIG. 1 is the knife 40 and thus the earthing switch 10 in its non-earthed position (solid line). This means that only the components of the earthing switch 10 are grounded, but that the knife 40 is in electrical contact with no other component, in particular with no current-carrying component. In this non-earthing position, the sockets and voltage and / or current transformers in the cable outlet are not earthed.
  • the knife 40 and thus the earthing switch 10 can be transferred to its grounding position.
  • the disk 15 must be pivoted by means of the rod 17 about the disk axis 16, in the present embodiment by about 100 degrees. It is understood that this angular range can also have a different size.
  • the rod 17 must be moved in the present embodiment in approximately vertical direction from bottom to top. Here too It goes without saying that this direction can also be different.
  • the required pivoting of the rod 17 is in the FIG. 1 indicated by an arrow 50.
  • the pivotal movement of the disc 15 about the disc axis 16 is transmitted from the rods 31, 32 to the plate 20.
  • the plate 20 thus performs a similar pivoting movement about the plate axis 21.
  • the pivotal movement of the plate 20 about the plate axis 21 is transmitted from the rods 47, 48 to the knife 40.
  • the knife 40 thus performs a corresponding pivoting movement about the knife axis 41.
  • the pivoting movement of the knife is in the FIG. 1 indicated by an arrow 51.
  • the pivotal movements of the disc 15, the plate 20 and the blade 40 have the same direction.
  • the pivoting range of the blade 40 in the present embodiment is smaller than the pivoting range of the disc 15 and is about 90 degrees. It is understood that the explained translation can also lead to a larger pivoting range of the blade 40 in comparison to the disc 15. It is also understood that the aforementioned angular range may have a different size.
  • a current-carrying component 55 is shown schematically, which may preferably be a busbar.
  • the existing cable outlet sockets and voltage and / or current transformers are connected to this current-carrying component 55.
  • the current-carrying component 55 In the grounding position of the blade 41, the current-carrying component 55 is in electrical contact with the blade 41 (dashed line).
  • the im Cable outlet existing sockets and voltage and / or current transformers are grounded with it.
  • FIG. 2 a grounding switch 20 is shown, which is partially identical to the earthing switch 10 of FIG. 1 matches.
  • the matching components are in the FIG. 2 with the same reference numerals as in the FIG. 1 , These are the disc 15, the plate 20, the rods 31, 32 with associated axes 16, 21, 25, 26, 27, 28, 34, 35 and the arrangement and operation of these components in the interior 11 of the cable outlet.
  • FIG. 1 For an explanation of these matching components, reference is made to the description of FIG. 1 directed.
  • two axes 63, 64 are present, which are arranged symmetrically and at the same distance from the knife axis 61.
  • the distance between the two axes 63, 64 of the knife axis 61 and the distance between the two axes 34, 35 of the plate axis 21 is preferably about the same size.
  • one of the two axes 34, 35 on the plate 20 is connected via a rod 67, 68 with one of the two axes 64, 63 of the knife 60 pivotally connected.
  • the two rods 67, 68 cross each other.
  • All axes 25, 26, 27, 28, 34, 35, 63, 64 are approximately parallel to each other and approximately parallel to the other axes 16, 21, 61 aligned.
  • the knife 60 is elongated, with the knife axis 61 at a free end of the knife 60 and there between the two axes 63, 64 is arranged. The other free end of the knife 60 stands free.
  • FIG. 2 In the FIG. 2 is the knife 60 and thus the earthing switch 20 in its non-earthed position (solid line). This means that only the components of the earthing switch 20 are grounded, but that the knife 60 is in electrical contact with no other component, in particular with no current-carrying component. In this non-earthing position, the sockets and voltage and / or current transformers in the cable outlet are not earthed.
  • the knife 60 and thus the earthing switch 20 can be transferred to its grounding position.
  • the disk 15 must be pivoted by means of the rod 17 about the disk axis 16, in the present embodiment by about 100 degrees.
  • the rod 17 must be moved in the present embodiment in approximately vertical direction from bottom to top. The required pivoting of the rod 17 is in the FIG. 2 indicated by the arrow 50.
  • the pivotal movement of the disc 15 about the disc axis 16 is transmitted from the rods 31, 32 to the plate 20.
  • the plate 20 thus performs a corresponding pivoting movement about the plate axis 21.
  • the pivoting movement of the plate 20 about the plate axis 21 is transmitted from the bars 67, 68 to the knife 60. Due to the intersecting rods 67, 68, the knife 60 performs an opposite pivotal movement about the knife axis 61.
  • the pivotal movement of the knife 60 is in the FIG. 2 indicated by an arrow 53.
  • the pivoting movements of the disc 15 and the plate 20 have, as I said, the opposite direction.
  • a current-carrying component 57 is shown schematically, which may preferably be a busbar.
  • the existing in the cable outlet sockets and voltage and / or current transformers are connected to this current-carrying component 57.
  • the current-carrying component 57 In the grounding position of the blade 61, the current-carrying component 57 is in electrical contact with the blade 61 (dashed line).
  • the existing in the cable outlet sockets and voltage and / or current transformers are thus grounded.
  • the earthing switches 10, 20 described For the transition from its ground to its non-grounding position, the earthing switches 10, 20 described must be pivoted about the axis 16 by means of the rod 17, in the present embodiment in an approximately vertical direction from top to bottom. This operation of the rod 17 is particularly easy to carry out for an operator, since the lever only has to be pressed down.
  • the pivotal movement from the non-grounding position to the grounding position of the grounding switches 10, 20 described may be assisted by a spring drive.
  • the transition from the earthy to the non-earth Position so when operating the rod 17 from top to bottom, tensioned a spring, not shown.
  • the earthing switches 10, 20 are brought in the non-earthed position to an end position which is beyond a dead center.
  • the earthing switches 10, 20 are moved by means of the rod 17 only back over the dead center.
  • the further pivoting movement of the knife 40, 60 is supported by the tensioned spring.
  • the described earthing switches 10, 20 can also be used quite generally otherwise as a switching device, ie not only in connection with the earthing of live components. It is also understood that this switching device can be used not only in the medium voltage range, but also in other voltage ranges.

Landscapes

  • Switch Cases, Indication, And Locking (AREA)
  • Mechanisms For Operating Contacts (AREA)
  • Rotary Switch, Piano Key Switch, And Lever Switch (AREA)

Claims (6)

  1. Dispositif de commutation pour un interrupteur électrique, en particulier un interrupteur à moyenne tension, comprenant un disque (15) pouvant pivoter autour d'un axe de disque (16) et qui peut être pivoté d'un côté et de l'autre par un opérateur entre une première position et une deuxième position, caractérisé par une plaque (20) pouvant pivoter autour d'un axe de plaque (21), laquelle plaque étant couplée au disque (15) par le biais de deux tiges (31, 32) de telle sorte qu'un mouvement de bascule du disque (15) entraîne un mouvement de bascule similaire de la plaque (20), et caractérisé par une lame (40, 60) pouvant pivoter autour d'un axe de lame (41, 61), laquelle lame étant couplée avec la plaque (20) par le biais de deux tiges (47, 48, 67, 68) de telle sorte qu'un mouvement de bascule du disque (15) entraîne un mouvement de bascule de la lame (40, 60).
  2. Dispositif de commutation selon la revendication 1, dans lequel les deux tiges (47, 48) qui sont couplées avec la lame (40) sont agencées approximativement parallèles entre elles et dans lequel le mouvement de bascule du disque (15) et de la lame (40) est orienté dans le même sens.
  3. Dispositif de commutation selon la revendication 1, dans lequel les deux tiges (67, 68) qui sont couplées avec la lame (60) se croisent et dans lequel le mouvement de bascule du disque (15) et celui de la lame (60) sont orientés dans des directions opposées.
  4. Dispositif de commutation selon l'une des revendications 1 à 3, dans lequel le disque (15) peut être actionné par l'opérateur du haut vers le bas de façon sensiblement verticale, en particulier à l'aide d'une tige (17).
  5. Dispositif de commutation selon l'une des revendications 1 à 4, comprenant un entraînement par ressort, dans lequel un ressort est tendu lors de la transition depuis une position vers l'autre position du disque (15), et dans lequel le mouvement de bascule de la lame (40, 60) est soutenu par le ressort lors d'une transition opposée.
  6. Dispositif de commutation selon l'une des revendications 1 à 5, dans lequel il s'agit d'un interrupteur de mise à la terre (10, 20) avec lequel un composant conducteur (55, 57) de l'interrupteur, en particulier une barre collectrice, peut être amené en contact électrique avec la lame (40, 60).
EP09005970.0A 2008-07-15 2009-04-30 Dispositif de commutation pour un interrupteur électrique, notamment un interrupteur à moyenne tension Not-in-force EP2146361B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102008033186A DE102008033186A1 (de) 2008-07-15 2008-07-15 Schaltvorrichtung für eine elektrische Schalteinheit insbesondere einer Mittelspannungsschaltanlage

Publications (3)

Publication Number Publication Date
EP2146361A2 EP2146361A2 (fr) 2010-01-20
EP2146361A3 EP2146361A3 (fr) 2010-10-06
EP2146361B1 true EP2146361B1 (fr) 2015-09-02

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Application Number Title Priority Date Filing Date
EP09005970.0A Not-in-force EP2146361B1 (fr) 2008-07-15 2009-04-30 Dispositif de commutation pour un interrupteur électrique, notamment un interrupteur à moyenne tension

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EP (1) EP2146361B1 (fr)
DE (1) DE102008033186A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107633975A (zh) * 2017-10-20 2018-01-26 湖南长高高压开关集团股份公司 一种用于接地开关的双连杆传动装置

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Publication number Priority date Publication date Assignee Title
FR776390A (fr) * 1934-07-24 1935-01-24 Merlin Gerin Perfectionnements aux interrupteurs électriques à très haute tension
DE1106843B (de) * 1958-10-23 1961-05-18 Continental Elektro Ind Ag Antriebsanordnung fuer elektrische Schaltgeraete in Schaltanlagen
US3459905A (en) * 1967-07-13 1969-08-05 S & C Electric Co Switchgear with panels overlying access openings interlocked with grounding switches by means of j-shaped latches
US4202028A (en) * 1978-11-27 1980-05-06 General Electric Company Ground and test apparatus with indicia means
JPS6113514A (ja) * 1984-06-28 1986-01-21 三菱電機株式会社 抵抗付接地開閉器
DD234120A1 (de) * 1985-01-11 1986-03-19 Liebknecht Transformat Hochspannungs-schwenktrennschalter
SE457582B (sv) * 1987-04-09 1989-01-09 Asea Ab Trepolig hoegspaenningsbrytare
DE4312024A1 (de) * 1993-04-13 1994-10-20 Concordia Sprecher Energie Vorrichtung zur Betätigung eines in einer insbesondere druckfest ausgebildeten Schalterzelle angeordneten Schalters
DE4436417C1 (de) * 1994-10-12 1996-02-22 Peterreins Schalttechnik Gmbh Motorisch angetriebenes, mechanisches Umschaltwerk zur Betätigung eines elektrischen Schalters
JPH08264076A (ja) * 1995-03-23 1996-10-11 Meidensha Corp 手動接地開閉器
DE29513566U1 (de) 1995-08-23 1995-10-19 Elektrotechnische Werke Fritz Driescher & Söhne GmbH & Co, 85368 Moosburg Schaltschrank
DE19816592B4 (de) * 1998-04-08 2006-04-13 Siemens Ag Antriebseinrichtung für Schaltanlagen der Energieversorgung und -verteilung
DE19859815C2 (de) * 1998-12-16 2001-09-13 Siemens Ag Vorrichtung zur Übertragung einer Bewegung
JP2003257290A (ja) * 2002-02-28 2003-09-12 Tokyo Electric Power Co Inc:The スイッチギヤ

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107633975A (zh) * 2017-10-20 2018-01-26 湖南长高高压开关集团股份公司 一种用于接地开关的双连杆传动装置

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Publication number Publication date
DE102008033186A1 (de) 2010-01-21
EP2146361A3 (fr) 2010-10-06
EP2146361A2 (fr) 2010-01-20

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