EP2789000B1 - Appareil de commutation, en particulier interrupteur sectionneur, pour installations de commutation moyenne tension - Google Patents

Appareil de commutation, en particulier interrupteur sectionneur, pour installations de commutation moyenne tension Download PDF

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Publication number
EP2789000B1
EP2789000B1 EP13700673.0A EP13700673A EP2789000B1 EP 2789000 B1 EP2789000 B1 EP 2789000B1 EP 13700673 A EP13700673 A EP 13700673A EP 2789000 B1 EP2789000 B1 EP 2789000B1
Authority
EP
European Patent Office
Prior art keywords
contact
switching device
moving contact
rotatable
fixed contact
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP13700673.0A
Other languages
German (de)
English (en)
Other versions
EP2789000A1 (fr
Inventor
Stefan Hohmann
Daniel Pesch
Stefan Wolf
Rene Zlydnik
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.)
Siemens AG
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Siemens AG
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Filing date
Publication date
Application filed by Siemens AG filed Critical Siemens AG
Publication of EP2789000A1 publication Critical patent/EP2789000A1/fr
Application granted granted Critical
Publication of EP2789000B1 publication Critical patent/EP2789000B1/fr
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Anticipated expiration legal-status Critical

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Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/60Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
    • H01H33/66Vacuum switches
    • H01H33/666Operating arrangements
    • H01H33/6661Combination with other type of switch, e.g. for load break switches
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/02Details
    • H01H33/04Means for extinguishing or preventing arc between current-carrying parts
    • H01H33/12Auxiliary contacts on to which the arc is transferred from the main contacts
    • H01H33/121Load break switches
    • H01H33/122Load break switches both breaker and sectionaliser being enclosed, e.g. in SF6-filled container
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/02Details
    • H01H33/04Means for extinguishing or preventing arc between current-carrying parts
    • H01H33/12Auxiliary contacts on to which the arc is transferred from the main contacts
    • H01H33/121Load break switches
    • H01H33/125Load break switches comprising a separate circuit breaker
    • H01H33/128Load break switches comprising a separate circuit breaker being operated by a separate mechanism interlocked with the sectionalising mechanism
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00Mechanisms for operating contacts
    • H01H3/32Driving mechanisms, i.e. for transmitting driving force to the contacts
    • H01H3/42Driving mechanisms, i.e. for transmitting driving force to the contacts using cam or eccentric
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H31/00Air-break switches for high tension without arc-extinguishing or arc-preventing means
    • H01H31/003Earthing switches
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/02Details
    • H01H33/022Details particular to three-phase circuit breakers

Definitions

  • the invention relates to a switching device, in particular a load-break switch, for medium-voltage switchgear.
  • Such a load-break switch for medium voltage switchgear is for example from the DE 10 2004 006 476 A1 and comprises a main contact system and a shunt branch, in which shunt branch an erase contact arrangement for extinguishing an arc and a disconnect contact arrangement for providing a dielectric strength are provided.
  • the DE69516461 T2 describes a rotary load switch or rotary power switch with a vacuum tube for turning on the power.
  • Object of the present invention is to provide a switching device of the type mentioned, which is inexpensive to produce in a compact design.
  • a switching device for medium-voltage switchgear according to claim 1, with a main contact system, formed from a first fixed contact and a second fixed contact, which are diametrically opposed, and one by means of a centrally between the first fixed contact and the second fixed contact arranged rotary support rotatable moving contact to form a main current path in a first position of the moving contact and forming a separation path in a second position of the rotatable moving contact and a Crowstrompfad formed from the first fixed contact, the second fixed contact, a quenching contact system and a first sliding contact and a second sliding contact for forming a conductive connection with the rotatable moving contact in one between the first Posi tion and the second position rotational angle range of the rotatable moving contact such that when initiating a rotational movement in the rotatable Moving contact commutation of an alternating current flowing through the switching device from the main current path to the secondary current path is made possible, wherein the rot
  • Such a switching device on the one hand has a compact design, because by the diametrical arrangement of the first fixed contact and second fixed contact to each other and the interposed rotatable moving contact an arrangement of main flow path and Maustrompfad in a small space next to each other is enabled by a commutation of the over the Switching device guided alternating current from the main current path to the secondary current path is made possible.
  • such a switching device has a cost-effective design, because by the arranged in the secondary current path extinguishing contact system both this and the first and second sliding contacts and other connecting means to the first and the second fixed contact of inexpensive material, such as steel or stainless steel or aluminum or the like , can be produced because of the Maustrompfad only briefly during a switching operation, a current is performed until after arc quenching in the extinguishing contact system a transfer to the disconnected position of the circuit breaker, so that the requirements of the material properties of the Maustrompfades are lower than the requirements for the material properties of main current path.
  • the extinguishing contact system comprises a vacuum interrupter with a closable by means of a contact pressure spring contact system.
  • the contact system of the vacuum interrupter is held by the contact pressure spring in its closed state, as long as the means of the rotatable moving contact for interrupting the extinguishing contact system does not attack it, so that the arrangement of the extinguishing contact system in the secondary flow path, in particular for the contact pressure spring only a small spring force is necessary because no short-circuit current is passed over the Maustrompfad and thus, for example, no bounce occurs, which would require significantly higher spring forces to keep the contact system of the vacuum interrupter in the closed state ,
  • the rotatable moving contact is designed to be rotatable by 360 °.
  • the rotatable moving contact is designed to be rotatable by 360 °. This ensures in an advantageous manner that when turning only in one direction, a switch-on of the switching device by initiating the rotational movement in the same direction and transferring the rotatable moving contact from the second position to the first position of the switching without the participation of Crowstrompfades and in particular without involvement the vacuum interrupter of the extinguishing contact system is carried out so that the vacuum interrupter no requirements regarding Einschaltfestmaschine or the like are made because a Einschaltschreiben is ignited during the switching between the rotatable moving contact and the first and second fixed contacts, which in particular in the arrangement of the switching device in one with a Insulating medium, for example, an insulating gas or insulating liquid filled housing represents a simple way to perform a switch-on.
  • a switch-on of the switching device by initiating the rotational movement in the same direction and transferring the rotatable moving contact from the second position to the first position of the switching without the participation of Volunteerstrompfades
  • the means comprise a rocker for actuating a coupled by means of a guide element with a moving contact terminal bolt of the vacuum interrupter cam.
  • FIG. 1 shows a switching device in the form of a circuit breaker 1 for use in medium voltage switchgear, which are not shown in detail figuratively, the switch disconnector 1 is connected to a first fixed contact 2 with a busbar connection of the switchgear and a second fixed contact 3 with a cable outlet of the medium voltage Switchgear is connectable.
  • the first fixed contact 2 and the second fixed contact 3 together with a rotatable moving contact 4 form a main contact system and a main current path of the circuit breaker 1.
  • the moving contact 4 is designed as a pair of knives and comprises a first Knife pair end 5 and a second pair of knife ends 6 and a figuratively not shown further conductive connection between the first pair of knife ends 5 and the second pair of knife ends 6 and is located in the FIG.
  • the rotatable moving contact 4 is attached to a rotary support 7, in which rotary support 7, a drive movement of a figuratively also not shown drive for rotating the rotary support 7, and thus rotation of the rotatable moving contact 4 is possible.
  • an erase contact system 9 is electrically connected by means of a conductive connection 8, which extinguishing contact system 9 is formed by a vacuum interrupter 10 with moving contact 11 and fixed contact 12, wherein the extinguishing contact system 9 in the FIG. 1 is in the closed state by a contact pressure spring 13 on a moving contact terminal pin 14 exerts a compressive force to hold in the closed position of the extinguishing contact system 9.
  • the moving contact 11 of the extinguishing contact system 9 is in turn conductively connected to a first sliding contact 15.
  • a second sliding contact 16 by means of a further conductive connecting element 17 to the second fixed contact 3 electrically conductively connected, so that after initiating a rotary movement in the rotary support 7 and rotation of the rotatable moving contact 4 in a contact position in which the first knife pair end 5 and the second knife pair end 6 of the rotatable Moving contact 4 with the first sliding contact 15 and the second sliding contact 16 is in conductive connection, a Crowstrompfad on the first fixed contact 2, the conductive connection 8, the closed erase contact system 9, the first sliding contact 15, the rotatable moving contact 4, the second sliding contact 16, the conductive connecting element 17 and the second fixed contact 3 is formed, as with reference to the FIGS. 2 to 6 explained in more detail below.
  • a rocker 18 which has a cam track 19, through which a cam 20 can be actuated during a rotational movement of the rotatable moving contact 4, which cam disk 20 is rotatably supported at a pivot point 21 and guided by a guide pin 22 in its movement is, with a guide member 23 is provided, through which the cam 20 moves the moving contact terminal pin 14 of the extinguishing contact system 9 and the extinguishing contact system 9 opens.
  • the switch-disconnector 1 is arranged in a housing 24 which can be filled with an insulating gas or an insulating liquid and by means of fastening elements, of which only one example is denoted by 25, can be fastened and mounted on the medium-voltage switchgear.
  • the switch-disconnector 1 is in the FIG. 1 in its first position with trained main current path via the first fixed contact 2, the rotatable moving contact 4 and the second fixed contact 3.
  • the position of FIG. 2 reaches, in which the first knife pair end 5 is in conductive connection with both the first fixed contact 2 and the first sliding contact 15 and the second pair of knife ends 6 is in electrically conductive connection with the second fixed contact 3 and the second sliding contact 16, so that at that time the position of FIG.
  • the extinguishing contact system 9 is completely open and the arc extinguishing in the opened extinguishing contact system 9 of the vacuum interrupter 10 is extinguished at the current zero crossing, while the first pair of knife ends 5 and second pair of knife 6 with the first sliding contact 15 and the second sliding contact 16 is still in electrically conductive connection until after completion of the deletion process and reaching the position of FIG. 5 finally upon further rotation the position of the FIG.
  • a switch-on of the switch-disconnector 1 is done by further initiation of a rotary movement of the switch-disconnector 1 located in the disconnected position, as in FIG. 6 shown, and further rotation of the rotatable moving contact 4 in the same direction until finally the second pair of knife ends 6 with the first fixed contact 2 and the first pair of knife ends 5 with the second fixed contact 3 comes in conductive connection, wherein a Einschaltschreibbogen can be ignited beforehand, which in an arrangement of the circuit breaker 1 in a container filled with an insulating medium is unproblematic and in particular allows the vacuum interrupter 10 of the extinguishing contact system 9 to perform cost, since this is not involved in the switch-on and thus no special requirements for the breaking strength of the vacuum interrupter 10 must be made.
  • the rotatable by 360 ° Bewegumblees 4 of the secondary flow path can be formed by low-cost materials such as steel, stainless steel or aluminum, because on the Maustrompfad briefly briefly a current is performed and in particular no short-circuit current occurs in the secondary flow path.
  • FIG. 7 shows a three-phase switching device 1, wherein each phase 26, 27 or 28 according to the embodiment of FIGS. 1 to 6 is formed, of which the housing 24 are visible and wherein the individual phases 26, 27 and 28 are connected to each other via connecting elements 29, so that a simultaneous actuation of all phases by initiating a Rotary movement of a drive, not shown in the figure, is made possible in the rotary support 7.
  • FIG. 8 shows the switch-disconnector 1 in its second position with trained separation distance as already explained in more detail with reference to the figure 6, wherein in the FIG. 8 on the second fixed contact 3, a ground terminal 30 is provided, which in the FIG. 8 is conductively connected to a grounding contact 31, which is rotatably mounted at a pivot point 32 and connected to ground potential.
  • FIG. 9 the earthing contact 31 is shown separated from the ground terminal 30, so that in the position of the Erdungsbeweg Membershipes 31 shown in Figure 8, a grounding of the cable outlet portion of the switching device is formed and in the in FIG. 9 shown position, the switching device is in the normal operating mode.

Landscapes

  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
  • Arc-Extinguishing Devices That Are Switches (AREA)

Claims (3)

  1. Appareil de commutation, notamment sectionneur (1) en charge, pour des installations de commutation en moyenne tension, comprenant un système de contact principal formé d'un premier contact (2) fixe et d'un deuxième contact (3) fixe, qui sont opposés diamétralement, et un contact (4) mobile pouvant tourner au moyen d'un support (7) de rotation monté au milieu, entre le premier contact (2) fixe et le deuxième contact (3) fixe, avec formation d'un trajet de courant principal dans une première position du contact (4) mobile tournant et formation d'une section de séparation dans une deuxième position du contact (4) mobile tournant, ainsi qu'un trajet de courant auxiliaire formé du premier contact (2) fixe, du deuxième contact (3) fixe, d'un système (9) de contact d'extinction, ainsi qu'un premier contact (15) par frottement et un deuxième contact (16) par frottement, pour former une liaison conductrice avec le contact (4) mobile tournant dans une plage angulaire de rotation, se trouvant entre la première position et la deuxième position, du contact (4) mobile tournant, de manière à rendre possible, en faisant commencer un mouvement de rotation dans le contact (4) mobile tournant, une commutation d'un courant alternatif passant par l'appareil de commutation, du trajet de courant principal au trajet de courant auxiliaire, dans lequel le contact (4) mobile tournant a des moyens (18, 19) d'interruption du système (20) de contact d'extinction et, lorsqu'un arc électrique est éteint et que le mouvement de rotation commence à se poursuivre, la constitution de la section de séparation est rendue possible,
    caractérisé en ce que le contact (4) mobile tournant est constitué de manière à pouvoir tourner de 360°.
  2. Appareil de commutation suivant la revendication 1,
    caractérisé en ce que
    le système (9) de contact d'extinction comprend un tube (10) de commutation à vide ayant un système de contact pouvant se fermer au moyen d'un ressort (13) de pression de contact.
  3. Appareil de commutation suivant la revendication 2,
    caractérisé en ce que
    les moyens (18, 19) comprennent une bascule (18) pour actionner une came (20) accouplée au moyen d'un élément (23) de guidage à un axe (14) de connexion du contact mobile du tube (10) de commutation à vide.
EP13700673.0A 2012-01-24 2013-01-11 Appareil de commutation, en particulier interrupteur sectionneur, pour installations de commutation moyenne tension Active EP2789000B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102012200962.0A DE102012200962B4 (de) 2012-01-24 2012-01-24 Schaltgerät, insbesondere Lasttrennschalter, für Mittelspannungs-Schaltanlagen
PCT/EP2013/050491 WO2013110511A1 (fr) 2012-01-24 2013-01-11 Appareil de commutation, en particulier interrupteur sectionneur, pour installations de commutation moyenne tension

Publications (2)

Publication Number Publication Date
EP2789000A1 EP2789000A1 (fr) 2014-10-15
EP2789000B1 true EP2789000B1 (fr) 2018-01-03

Family

ID=47594688

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13700673.0A Active EP2789000B1 (fr) 2012-01-24 2013-01-11 Appareil de commutation, en particulier interrupteur sectionneur, pour installations de commutation moyenne tension

Country Status (5)

Country Link
EP (1) EP2789000B1 (fr)
CN (1) CN104054150B (fr)
DE (1) DE102012200962B4 (fr)
NO (1) NO2922890T3 (fr)
WO (1) WO2013110511A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3843117A1 (fr) 2019-12-24 2021-06-30 Elna Kabel d.o.o. Interrupteur coupe-charge sans gaz sf6 doté d'un interrupteur de circuit à vide pour systèmes de commutation moyenne tension

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104319159B (zh) * 2014-11-19 2016-03-23 电光防爆科技股份有限公司 一种三相隔离开关
FR3034251B1 (fr) 2015-03-27 2017-04-28 Schneider Electric Ind Sas Interrupteur d'un reseau triphase
CN108320931B (zh) * 2018-02-01 2023-06-27 雷顿电气科技有限公司 一种自动转换开关电器
EP3928344B1 (fr) * 2019-03-29 2023-02-15 Siemens Aktiengesellschaft Commutateur à trois positions optimisé
FR3121267A1 (fr) 2021-03-24 2022-09-30 Schneider Electric Industries Sas Système de coupure d’un appareil électrique

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2719154B1 (fr) * 1994-04-25 1996-06-07 Merlin Gerin Interrupteur électrique moyenne tension.
FR2722912B1 (fr) * 1994-07-20 1996-09-13 Schneider Electric Sa Interrupteurs electriques moyenne tension
DE102004006476B4 (de) 2004-02-04 2006-02-09 Siemens Ag Lasttrennschalter
DE202010009448U1 (de) * 2010-06-23 2010-09-09 Ipt International Power & Technology Gmbh Hochspannungsschaltvorrichtung
CN101964271B (zh) * 2010-09-28 2012-08-15 丹东供电设备厂 高压切换转移电流装置

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3843117A1 (fr) 2019-12-24 2021-06-30 Elna Kabel d.o.o. Interrupteur coupe-charge sans gaz sf6 doté d'un interrupteur de circuit à vide pour systèmes de commutation moyenne tension

Also Published As

Publication number Publication date
WO2013110511A1 (fr) 2013-08-01
NO2922890T3 (fr) 2018-01-27
DE102012200962A1 (de) 2013-07-25
CN104054150A (zh) 2014-09-17
CN104054150B (zh) 2017-05-31
DE102012200962B4 (de) 2018-07-26
EP2789000A1 (fr) 2014-10-15

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