EP0145994B1 - Dispositif de commutation électrique moyenne tension - Google Patents

Dispositif de commutation électrique moyenne tension Download PDF

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Publication number
EP0145994B1
EP0145994B1 EP84114076A EP84114076A EP0145994B1 EP 0145994 B1 EP0145994 B1 EP 0145994B1 EP 84114076 A EP84114076 A EP 84114076A EP 84114076 A EP84114076 A EP 84114076A EP 0145994 B1 EP0145994 B1 EP 0145994B1
Authority
EP
European Patent Office
Prior art keywords
contact
switch
insulating member
change
switching device
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
Application number
EP84114076A
Other languages
German (de)
English (en)
Other versions
EP0145994A2 (fr
EP0145994A3 (en
Inventor
Arnold Efinger
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.)
Wickmann Werke Boeblingen GmbH
Original Assignee
Wickmann Werke Boeblingen 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 Wickmann Werke Boeblingen GmbH filed Critical Wickmann Werke Boeblingen GmbH
Priority to AT84114076T priority Critical patent/ATE40497T1/de
Publication of EP0145994A2 publication Critical patent/EP0145994A2/fr
Publication of EP0145994A3 publication Critical patent/EP0145994A3/de
Application granted granted Critical
Publication of EP0145994B1 publication Critical patent/EP0145994B1/fr
Expired legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
    • 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
    • H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
    • H01H31/003—Earthing switches

Definitions

  • the invention relates to an electrical medium-voltage switching device, in which, in an encapsulation with a gaseous or liquid insulating agent filling between a cable connection and a busbar, a vacuum switch with a stationary contact piece and with an axially movable and via an insulating body connected to an actuating device mating contact piece is formed
  • Switch disconnector is arranged downstream of a switch that can be alternately switched between a phase contact and an earth contact.
  • Such a switching device does not require a separate, pure earthing switch and includes the switch disconnector in the grounding process by bringing the two contact pieces of the switch disconnector back together after the switch has been switched over from the phase contact to the earth contact.
  • a lock in the actuating device ensures that the changeover switch can only be actuated when the switch disconnector is open.
  • the changeover switch is thus partly a phase isolating switch that disconnects from the load, and partly an earthing switch that also disconnects from the load in a figurative sense.
  • the use of a vacuum interrupter allows a particularly large number of high-energy switching cycles. Including the encapsulation and the filling of the insulating agent, the switching device is maintenance-free for a long time and offers a high level of safety even in a damp, dusty or otherwise aggressive environment.
  • a circuit breaker for encapsulated electrical systems in which the longitudinally movable switching pin of a circuit breaker assembled with the circuit breaker is surrounded by two concentric bushings for separate pivoting of two circuit breaker arms, which transition the connection of the switch from allow one to the other existing rail without power interruption.
  • the circuit breaker can be earthed together with one of the rail systems by means of a grounding contact which can be pivoted into the path of the disconnector arms.
  • a total of four mutually parallel shafts with worm gears are provided, one for rotating one sleeve, for rotating the other sleeve, for pivoting the grounding contact and for shifting the switching pin.
  • the shaft of the two-position switch is set to be drivable via a lever gear from the axis of the three-position switch parallel to the shaft, and a locking device is provided which ensures, without switching errors, that the three-position switch is switched off and the two-position switch is switched on in a switching position, and the three-position switch is in a second switching position In the switch-on position and the two-position switch is switched on and in a third switch position both switches are switched to earth.
  • the switch disconnector and the changeover switch likewise have an axially movable mating contact piece and engage the actuating devices of the two switches in the encapsulation from opposite end faces.
  • the invention has for its object to provide for an electrical medium-voltage switching device of the type mentioned in a space-saving design that requires little space, is inexpensive to manufacture and time-saving to maintain.
  • the encapsulation 10 of the switching device shown in the drawing mainly consists of a circular cylindrical tube with two branches coaxially enclosing a section of the busbar 11 near one end of the circular cylindrical tube. In this respect, it is preferably welded together from sheet steel parts and thus has good electrical conductivity, as a result of which it can be kept touch-proof at earth potential anywhere.
  • the insulating oil filling 12 of the switching device provided as voltage protection passes into the area of the busbar 11 without a partition.
  • the voltage protection is supplemented by a cylinder tube 13 made of electrically insulating material, which encloses all active parts of the switching device with an intermediate space to the encapsulation 10 and contributes to fixing the position thereof.
  • a circular cover 15 is flanged to one end of the circular cylindrical tube with the interposition of a sealing ring 14, through which the axially displaceable shaft 16 is passed coaxially, and an interchangeable adapter ring 17 at the other end of the circular cylindrical tube to adapt to different cable connections used, with the interposition of a sealing ring 18 the insulating jacket 19 of a conductor bushing 20 projecting conically into the encapsulation 10 is flanged.
  • the cover 15 and the adapter ring 17 each have an annular groove for receiving one end of the inner cylinder tube 13.
  • the axially movable mating contact piece 22 of the load break switch 21, 22 is coaxial to the insulating body core 23, which is axially displaceable via the shaft 16, into an insulating body core 23 and an insulating body jacket 24 divided insulating body 23, 24 attached. Except for the respective connection end, the contact piece 21 and the counter contact piece 22 are located in a circular cylindrical vacuum vessel 25.
  • the rotary contact 28 of the switch 26, 27, 28, which can be alternately switched between the phase contact 26 and the earth contact 27, is attached to the insulating body 23, 24 inserted between the shaft 16 and the axially movable counter-contact piece 22 of the load-break switch 21, 22.
  • the two successive switches 21, 22 and 26, 27, 28 have not only a common actuating element in the form of the axially displaceable shaft 16, but also a common protective element which keeps the electrical voltage from the actuating devices. It follows that not only the actuating devices of switch disconnectors 21, 22 and changeover switches 26, 27, 28 can be spatially closely merged, but also the two switches themselves, which again considerably reduces the space requirement of the switching device and the removal and installation of the two switches further simplified.
  • the rotary contact 28 In order to achieve a decoupling of the different switching movements despite the physical combination of peripheral parts of the load break switch 21, 22 and the changeover switch 26, 27, 28 and to advance the location of this decoupling as far as possible, the rotary contact 28 must be moved from the axial displacement movement of the shaft 16 for him on the insulating body 23, 24 provided axially parallel guide except and connected via a flexible conductor or a sliding contact to the axially movable counter-contact piece 22 of the switch disconnector 21, 22.
  • the shaft 16 is preferably guided far from the cable connection 19, 20 on the side of the busbar 11 through the encapsulation 10 in the sealing seat. This makes it possible to use the space required for the busbar 11 within the encapsulation 10 to a greater extent for the accommodation of switch parts.
  • this is realized in such a way that the busbar 11 is passed through the insulating body 23, 24 crossing at right angles, the through opening provided in the insulating body 23, 24 for the busbar 11 to the length of the axial switching movements of the mating contact piece 22 of the switch disconnector 21, 22 permitting elongated hole 29 is expanded, the insulating body 23, 24 is divided into an insulating body core 23 which is rotationally symmetrical with respect to its axis and an insulating body jacket 24 which is rotatably mounted on the insulating body core 23 and the through opening provided in the insulating body 23, 24 for the busbar 11 in the region of the Insulating body jacket 24 to two, offset by 180 angular degrees from each other in their opening angle, the switching movements of the rotary contact 28 permitting sector windows 30 is further expanded.
  • phase contact 26 of the changeover switch 26, 27, 28 consists of a cable which is guided together with the busbar 11 through the insulating body 23, 24, is attached lengthwise to the busbar 11 with a wide contact surface, and has a contact finger protruding at both ends at both ends 31 equipped molded bodies to give it a particularly firm hold and to be able to transfer stronger electric currents.
  • the phase contact 26 is given a secondary function which simplifies the construction and assembly of the switching device, in that the two end faces of the molded body forming the phase contact 26 act as a support for the changeover switch 26, 27, 28 and the load break switch 21, 22 with an intermediate space from that of an electrically conductive one Material existing encapsulation 10 together enclosing cylinder tube 13 are used made of electrically insulating material. On each of the two supports there is a fixing screw 32 connecting the cylinder tube 13 to the phase contact 26, the head of which can be reached via the respective branch created for the busbar 11 in the encapsulation 10, is countersunk into the cylinder tube 13 and usually by one on the cylinder tube 13 displaceable insulating sleeve 33 is covered.
  • connection of the phase contact 26 to the busbar 11 is provided by two cylinder head screws 34 which, parallel to the longitudinal axis of the switching device, reach through the busbar 11 in the region between the cylinder tube 13 and the insulating body jacket 24 and can be reached from the side assigned to the axially displaceable shaft 16.
  • the earth contact 27 of the changeover switch 26, 27, 28 consists of two 90 degree degrees to the contact fingers 31 des Phase contact 26 offset, extending outside the insulating body jacket 24 parallel to its axis of rotation and brought together on the shaft 16 Flat rails.
  • the rotary contact 28 of the switch 26, 27, 28 has two ends arranged for resilient broadside inclusion of the contact fingers 31 of the phase contact 26 or the correspondingly shaped free ends of the earth contact 27 with the longitudinal sectional view of a two-pronged fork and the rotary contact ends 35 narrowly between two each are loosely guided by the insulated body jacket 24, the high current suitability of the rotary contact 28 is further improved and the rotary contact 28 is excluded from the axial switching movements of the insulated body 23, 24 inserted between the mating contact piece 22 of the switch disconnector 21, 22 and the shaft 16 in a particularly simple manner .
  • the axially displaceable shaft 16 which is provided as a common actuating element for the load break switch 21, 22 and the changeover switch 26, 27, 28, is rotatably mounted with an end collar 37 without axial play relative to the insulating body core 23 at its front end. Laterally next to the end collar 37, the shaft 16 is provided with radial arms 38, the outer end of which is attached to the end face of the insulating body jacket 24.
  • the cover 15 completing the encapsulation 10 has an outwardly projecting central insert 39 which gives the axially displaceable shaft 16 better guidance and offers more space for more than one shaft seal 40. Outside the encapsulation 10, the shaft 16 ends with a drive disk 41 fastened to it and partially enclosing the insert 39.

Landscapes

  • Gas-Insulated Switchgears (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Electronic Switches (AREA)
  • Seal Device For Vehicle (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)

Claims (7)

1. Dispositif de commutation électrique à moyenne tension, dans lequel à l'intérieur d'un blindage (10) comportant un milieu isolant gazeux ou liquide de remplissage (12) et entre un raccord (19, 20) pour câbles et une barre omnibus (11), un commutateur (26, 27, 28) pouvant être commuté en alternance entre un contact de phase (26) et un contact de terre (27) est branché en aval d'un sectionneur de coupure sous charge (21, 22) réalisé sous la forme d'un interrupteur à vide comportant une pièce de contact fixe (21) et une pièce de contact antagoniste (22) mobile axialement et reliée par l'intermédiaire d'un corps isolant (23, 24) à un dispositif d'actionnement (41), caractérisé par le fait que pour le sectionneur de coupure sous charge (21, 22) et le commutateur (26, 27, 28) il est prévu, comme organe d'actionnement commun, un arbre (16) déplaçable axialement, possédant la capacité de déplacement associée au sectionneur de coupure sous charge et la capacité d'entraînement en rotation associée au commutateur, et que le contact rotatif (28) du commutateur (26, 27, 28), qui est commutable en alternance entre le contact de phase (26) et le contact de terre (27) et est monté sur le corps isolant (23, 24) inséré entre l'arbre (16) et l'organe de contact antagoniste (22), mobile axialement, du sectionneur de coupure en charge (21, 22) ne participe pas au mouvement de déplacement axial de l'arbre (16), grâce à un guidage parallèle à l'axe, prévu pour ce contact rotatif dans le corps isolant (23, 24) et est raccordé, par l'intermédiaire d'un conducteur flexible ou d'un contact glissant, à la pièce de contact antagoniste (22), déplaçable axialement, du sectionneur de coupure en charge (21, 22).
2. Dispositif de commutation suivant la revendication 1, caractérisé par le fait que l'arbre (16) traverse d'une manière étanche le blindage (10) du côté de la barre omnibus (11) dans une position éloignée du raccord (19, 20) pour câbles.
3. Dispositif de commutation suivant la revendication 2, caractérisé par le fait que la barre omnibus (11) traverse le corps isolant (23, 24) à angle droit, que l'ouverture de passage prévue dans le corps isolant (23, 24) pour la barre omnibus (11) est allongée de manière à former un trou allongé (29) autorisant, sur sa longueur, les déplacements axiaux de commutation de la pièce de contact antagoniste (22) du sectionneur de coupure sous charge (21, 22), que le corps isolant (23, 24) est subdivisé en un noyau (23) présentant une symétrie de révolution par rapport à son axe et en une enveloppe (24) montée de manière à pouvoir tourner sur le noyau (23) du corps isolant, et que l'ouverture de passage prévue dans le corps isolant (23, 24) pour la barre omnibus (11) est à nouveau élargie, dans la zone de l'enveloppe (24) du corps isolant, de manière à comporter deux fenêtres en forme de secteurs (30), qui autorisent des mouvements de commutation du contact rotatif (28) et dont les angles d'ouverture sont décalés de 180 degrés l'un par rapport à l'autre.
4. Dispositif de commutation suivant la revendication 3, caractérisé par le fait que le contact de phase (26) du commutateur (26, 27, 28) est constitué par un corps moulé traversant, conjointement avec la barre omnibus (11), le corps isolant (23,24) et se raccordant, dans le sens de la longueur, par la surface de contact la plus large à la barre omnibus (11) et comportant, sur ses deux extrémités, des doigts respectifs de contact (31) faisant saillie perpendiculairement.
5. Dispositif de commutation suivant la revendication 4, caractérisé par le fait que les deux faces frontales du corps moulé constituant le contact de phase (26) sont utilisées en tant qu'appui pour un tube cylindrique (13) réalisé en un matériau électriquement isolant enserrant en commun le commutateur (26, 27, 28) et le sectionneur de coupure sous charge (21, 22) tout en laissant subsister un espace intercalaire par rapport au blindage (10) constitué par un matériau électriquement conducteur.
6. Dispositif de commutation suivant la revendication 4 ou 5, caractérisé par le fait que le contact de terre (27) du commutateur (26, 27, 28) est constitué par deux barres plates qui sont décalées de 90 degrés par rapport aux doigts de contact (31), du contact de phase (26), sont disposées à l'extérieur de l'enveloppe (24) du corps isolant parallèlement à l'axe de rotation de ce dernier et sont réunies au niveau de l'arbre (16).
7. Dispositif de commutation suivant la revendication 6, caractérisé par le fait que le contact rotatif (28) du commutateur (26, 27, 28) comporte deux extrémités possédant coupe longitudinale la forme d'une fourche à deux dents et agencées de manière à enserrer élastiquement, sur leurs côtés larges, les doigts de contact (31) du contact de phase (26) ou les extrémités libres, de forme correspondante, du contact de terre (27), et les extrémités (35) du contact rotatif s'étendent de façon lâche, sur le côté étroit, entre deux ailettes respectives (36) disposées en saillie sur l'enveloppe (24) du corps isolant.
EP84114076A 1983-11-29 1984-11-22 Dispositif de commutation électrique moyenne tension Expired EP0145994B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84114076T ATE40497T1 (de) 1983-11-29 1984-11-22 Elektrische mittelspannungs-schaltvorrichtung.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3343099A DE3343099C2 (de) 1983-11-29 1983-11-29 Elektrische Mittelspannungs-Schaltzelle
DE3343099 1983-11-29

Publications (3)

Publication Number Publication Date
EP0145994A2 EP0145994A2 (fr) 1985-06-26
EP0145994A3 EP0145994A3 (en) 1986-10-08
EP0145994B1 true EP0145994B1 (fr) 1989-01-25

Family

ID=6215532

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84114076A Expired EP0145994B1 (fr) 1983-11-29 1984-11-22 Dispositif de commutation électrique moyenne tension

Country Status (4)

Country Link
US (1) US4578550A (fr)
EP (1) EP0145994B1 (fr)
AT (1) ATE40497T1 (fr)
DE (1) DE3343099C2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4126786A1 (de) * 1991-08-14 1993-02-18 Arnold Efinger Elektrische schaltvorrichtung

Families Citing this family (14)

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Publication number Priority date Publication date Assignee Title
DE4342796A1 (de) * 1993-12-15 1995-06-22 Abb Patent Gmbh Schaltanlage
DE4445172C2 (de) * 1994-12-17 1998-07-16 Abb Patent Gmbh Schaltfeld
DE4445865A1 (de) * 1994-12-22 1996-06-27 Abb Patent Gmbh Elektrische metallgekapselte gasisolierte Hochspannungsschaltanlage
JPH10144188A (ja) * 1996-11-15 1998-05-29 Toshiba Corp 断路器付真空遮断器
US5854732A (en) * 1997-03-10 1998-12-29 Argus Photonics Group, Inc. High voltage arcing switch initiated by a disruption of the electric field
IT1309626B1 (it) * 1999-11-03 2002-01-30 Vei Electric Systems Spa Dispositivo di sezionamento e interruzione, per cabine elettriche.
FR2881571A1 (fr) * 2005-02-03 2006-08-04 Schneider Electric Ind Sas Appareil de protection electrique haute ou moyenne tension
DE102006056656A1 (de) * 2006-11-29 2008-06-12 Areva Sachsenwerk Gmbh Schaltermodul für eine elektrische Schaltanlage
DE102006056655B4 (de) * 2006-11-29 2012-02-09 Areva Energietechnik Gmbh Schaltermodul für eine elektrische Schaltanlage
US7829814B2 (en) * 2007-09-26 2010-11-09 Eaton Corporation Vacuum circuit interrupter grounding assembly
CN103325606B (zh) * 2013-06-13 2015-07-08 沈阳春兴成套电器制造有限公司 三工位隔离接地开关
CN106952777B (zh) * 2017-05-24 2018-11-23 北京京东方真空电器有限责任公司 一种真空开关管及真空开关
CN108899244B (zh) * 2018-09-14 2022-04-05 协成科技股份有限公司 一种断路器
PL73334Y1 (pl) * 2021-10-07 2024-02-05 Zpue Spolka Akcyjna Zespół wyłączniko-odłączniko-uziemnika

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DE738070C (de) * 1937-05-25 1943-08-02 Siemens Ag Elektrisches Schaltgeraet
DE730915C (de) * 1940-10-25 1943-02-01 Fabriek Van Electrische App N Trennschalter
CH559977A5 (fr) * 1973-12-05 1975-03-14 Sprecher & Schuh Ag
NL154369B (nl) * 1973-12-21 1977-08-15 Hazemeijer Bv Elektrische hoogspanningsschakelaar met twee in serie geschakelde schakeltrajecten.
JPS54113838A (en) * 1978-02-24 1979-09-05 Toshiba Corp Enclosed type switching device
DE2818905C3 (de) * 1978-04-28 1982-12-09 Siemens AG, 1000 Berlin und 8000 München Elektrisches Mittelspannungs-Schaltfeld
FR2452810A1 (fr) * 1979-03-28 1980-10-24 Sadtem Bloc de fonction pour cellule moyenne tension
DE3112776C2 (de) * 1981-03-31 1986-05-22 Wickmann-Werke Böblingen GmbH, 7030 Böblingen Mittelspannungs-Schaltvorrichtung mit einem Vakuum-Unterbrecher zwischen einer Sammelschiene und einem Kabelanschlußstutzen
DE3133796C2 (de) * 1981-08-26 1984-04-26 Siemens AG, 1000 Berlin und 8000 München Anordnung zum Freischalten und Erden der Anschlüsse einer Hochspannungs-Hochleistungssicherung eines elektrischen Lastschaltfeldes

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4126786A1 (de) * 1991-08-14 1993-02-18 Arnold Efinger Elektrische schaltvorrichtung

Also Published As

Publication number Publication date
ATE40497T1 (de) 1989-02-15
DE3343099A1 (de) 1985-06-05
EP0145994A2 (fr) 1985-06-26
US4578550A (en) 1986-03-25
DE3343099C2 (de) 1986-01-30
EP0145994A3 (en) 1986-10-08

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