EP2810288B1 - Schaltgerät, insbesondere lasttrennschalter - Google Patents

Schaltgerät, insbesondere lasttrennschalter Download PDF

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Publication number
EP2810288B1
EP2810288B1 EP13707373.0A EP13707373A EP2810288B1 EP 2810288 B1 EP2810288 B1 EP 2810288B1 EP 13707373 A EP13707373 A EP 13707373A EP 2810288 B1 EP2810288 B1 EP 2810288B1
Authority
EP
European Patent Office
Prior art keywords
contact system
switching device
contact
quenching
main
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
EP13707373.0A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2810288A1 (de
Inventor
Stefan Wolf
Rene Zlydnik
Marco Adelmann
Kristian Ermeler
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
Original Assignee
Siemens AG
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Filing date
Publication date
Application filed by Siemens AG filed Critical Siemens AG
Publication of EP2810288A1 publication Critical patent/EP2810288A1/de
Application granted granted Critical
Publication of EP2810288B1 publication Critical patent/EP2810288B1/de
Active legal-status Critical Current
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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
    • H01H3/42—Driving mechanisms, i.e. for transmitting driving force to the contacts using cam or eccentric
    • 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

Definitions

  • the invention relates to a switching device, in particular a switch-disconnector for medium-voltage switchgear, with a main contact system and an extinguishing contact system connected in series with the main contact system, wherein the main contact system and the extinguishing contact system are arranged linearly one behind the other.
  • Such a switching device in the form of a circuit breaker is for example from the EP 1 538 650 A2 or from the EP 1 109 187 A1 known.
  • the load-break switch disclosed therein has a linear arrangement of a main contact system for forming a dielectric separation gap in an opened state and an extinguishing contact system for extinguishing an arc in a switching operation, each having a separate drive with a separate drive shaft for each of the two contact systems.
  • Object of the present invention is to provide a switching device of the type mentioned, which has a simple and compact and therefore cost-effective design.
  • a single drive is provided for initiating a drive movement in a single drive shaft of the switching device, wherein a single cam for transmitting the drive movement, a main contact system cam track for actuating the main contact system and an extinguishing contact system Curve track for actuating the extinguishing contact system has.
  • Such a design of the switching device with a single drive for initiating a drive movement in a single drive shaft of the switching device with a single cam which has a main contact system cam track and a quenching contact system cam track for actuating the main contact system and extinguishing contact system, has a simple and compact structure because the space for a second drive and a second drive shaft are not necessary, and the cost can be saved, so that the switching device also has a cost-effective design.
  • the switching device is arranged in a housing filled with an insulating medium, through which housing passages for electrical connection to a switchgear extend.
  • an insulating medium for example an insulating gas or an insulating liquid, because such insulating gases or insulating fluids have improved dielectric properties .
  • the main contact system is formed by a linear disconnector with a movable sliding contact in a sliding contact and formed as a tulip contact fixed contact, which sliding contact is connected to a first terminal of the switching device.
  • the fixed contact of the main contact system is connected to a moving contact terminal pin of the extinguishing contact system, and a fixed contact of the extinguishing contact system connected to a second terminal of the switching device.
  • the moving contact terminal pin of the extinguishing contact system is coupled via an insulating rod by means of a first guide element with the extinguishing contact system cam track and the moving contact of the main contact system by means of a second guide element with the main contact system cam track.
  • a simple and compact design is possible because of the coupling by means of first and second guide element with the interposition of an insulating rod to moving contact terminal pin of the extinguishing contact system control of moving contact of the main contact system and moving contact terminal pin of the extinguishing contact system on a single cam is made possible with their curved paths.
  • the insulating rod for coupling the moving contact connecting bolt of the extinguishing contact system with the extinguishing contact system curved path can be arranged differently, for example in a trained as a hollow body moving contact of the main contact system, but the insulating rod can also be optionally arranged outside or next to the moving contact of the main contact system and move the moving contact terminal pin of the extinguishing contact system to a switching operation via a suitable driver element.
  • the extinguishing contact system cam track and the main contact system cam track are designed such that at a turn-off of the switching device after opening the extinguishing contact system and extinguishing the arc, the main contact system with open extinguishing contact system is actuated, and at a switch-on of the switching device, the main contact system can be actuated when the extinguishing contact system is closed.
  • the extinguishing contact system curved path for a switch-on and a switch-off for example, the same slope
  • the main contact system curved path for a switch-on a different slope than for a switch-off
  • the slope of the main contact system is modified so that the extinguishing contact system is first closed and only when the extinguishing contact system is closed, the slope of the main contact system cam track leads to a movement and to close the main contact system, so there ss is ignited at a switch-on a Einschaltlichtbogen in the main contact system.
  • the cam is rotatable by 360 °.
  • a cam rotatable by 360 ° it is possible in a simple manner to make the main contact system cam track different for a switch-on or a switch-off, or to provide with different gradients to ensure that when a switch-on, the main contact system until it is closed Erase contact system is actuated, whereas, in contrast, in a turn-off, the main contact system is actuated only when an open contact system and extinguished arc.
  • the drive is cost-effective, because a drive movement can be initiated only in one direction.
  • a grounding device is provided in the housing.
  • a grounding switching device in the same housing which has a separate drive, advantageously allows the grounding of various switchgear parts of a medium voltage switchgear in which the switching device is arranged, depending on the switching state of the switching device, for example when the main contact system is open, a grounding of the cable outlet is possible or when the main contact system is closed and the extinguishing contact system is closed, earthing of the busbar area of the switchgear is also possible.
  • FIG. 1 shows a switching device 1 in the form of a circuit breaker for medium voltage switchgear, which medium-voltage switchgear are figuratively not shown in detail and have a busbar area and a cable outlet area.
  • the switching device 1 has a busbar connection 2 and a cable outlet connection 3, via which a current path is formed by the switching device 1.
  • a main contact system 4 in the form of a linear circuit breaker is electrically connected in series to an extinguishing contact system 5 and arranged linearly behind it so that overall a linear arrangement of the switching device 1 results.
  • the main contact system 4 comprises a first sliding contact 6, which is electrically connected via a connecting element 7 with the cable outlet connection 3.
  • a moving contact 8 of the main contact system 4 is between an off position, which with reference to the FIG. 2 will be explained in more detail later and one in the FIG. 1
  • the closing contact system 5 comprises a moving contact connection bolt 10, which is electrically conductively connected to a moving contact 11 of the extinguishing contact system and to the fixed contact 9 of the main contact system is in electrically conductive connection, and a fixed contact 12, which is electrically conductively connected to the busbar terminal 2 of the switching device 1.
  • a cam 14 is rotatably connected to a drive shaft, not shown figuratively and about this with a figuratively also not shown drive for initiating a drive movement and has an erase contact system cam track 15, a main contact system cam 16.
  • the erase contact system cam track 15 is coupled via a first guide element 17 with the insulating rod 13 for transmitting the drive movement to the moving contact terminal pin 10, the main contact system cam track 16 is via a second guide member 18 with the moving contact 8 of the main contact system 4 for transmitting the drive movement coupled.
  • the switching device 1 and the busbar connection 2 and the cable outlet connection 3 are arranged in a housing 19, which is filled with an insulating medium, for example an insulating gas or an insulating liquid can be arranged.
  • a grounding switch 20 is further arranged, which has a grounding fixed contact 21 in the form of another tulip contact, which is connected to a ground contact terminal 22 located outside the housing for connection to ground potential.
  • the earthing switch 20 comprises a grounding contact 23, which slidably extends through a second sliding contact 24 and is coupled via a third guide element 25 with another cam 26 for initiating a drive movement by means of a grounding contact system cam track 27.
  • the second sliding contact 24 is conductively connected via a further connecting element 28 with the cable outlet connection 3.
  • FIG. 1 is the earthing switch 20 in an open state, the main contact system 4 and the extinguishing contact system 5 of the switching device 1 are in their closed state.
  • a signal to the drive of the switching device 1 is transmitted in the presence of a corresponding switching condition on a control unit of the switchgear, which leads to carry out a rotational movement of the drive shaft and thus the cam 14 in the counterclockwise direction.
  • the rotational movement of the cam plate 14 is transmitted via the quenching contact system cam track 15 and the main contact system cam track 16 and the first guide member 17 and the second guide member 18 on the insulating rod 13 and the moving contact 8, wherein the quenching contact system cam track 15 and the Main contact system cam track 16 are configured such that by their gradients during the turn-off first the deletion contact system cam track 15 transmits a movement to the insulating rod 13, which for opening the deletion contact system 5 by removing the BewegWalletes 11 from the fixed contact 12 of the extinguishing contact system 5 and for deleting the This resulting arc in the extinguishing contact system 5 leads.
  • a signal to the drive for initiating a rotational movement in the drive shaft and the cam plate 14 is transmitted by the control unit in turn, which leads to the rotation of the cam 14 in a clockwise direction. Due to the different configuration of the main contact system cam track 16 for the switch-on of the main contact system 4 with a first portion 29 and a second portion 30 for transmitting a pressure movement to the second guide member 18 is ensured that in such a design by the quenching contact system cam track 15 first the Extinguishing contact system 4 passes into its closed state, before movement of the cam plate 14 is transmitted via the second portion 30 of the main contact system cam 16 on the second guide member 18 and thus the moving contact 8 of the main contact system 4.
  • a drive movement in the moving contact 23 of the earthing switch 20 can be introduced to form a conductive connection between grounding fixed contact 21 and moving contact 23, so that when the main contact system 4 and closed grounding system 5 is a grounding of the entire switchgear area is possible or when the main contact system 4 is open a grounding of at least the cable outlet terminal 3 and the associated switchgear parts is possible.
  • the cam plate 14 is shown as a cam with a limited rotation angle range for a reciprocating motion.
  • the cam disk it is also possible to form the cam disk as a 360 ° rotatable cam, wherein the erase contact system cam track 15 and the main contact system cam track 16 extend over the entire angular range of 360 °.

Landscapes

  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Arc-Extinguishing Devices That Are Switches (AREA)
EP13707373.0A 2012-03-15 2013-03-01 Schaltgerät, insbesondere lasttrennschalter Active EP2810288B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102012204049 2012-03-15
PCT/EP2013/054181 WO2013135505A1 (de) 2012-03-15 2013-03-01 Schaltgerät, insbesondere lasttrennschalter

Publications (2)

Publication Number Publication Date
EP2810288A1 EP2810288A1 (de) 2014-12-10
EP2810288B1 true EP2810288B1 (de) 2019-12-04

Family

ID=47790218

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13707373.0A Active EP2810288B1 (de) 2012-03-15 2013-03-01 Schaltgerät, insbesondere lasttrennschalter

Country Status (4)

Country Link
EP (1) EP2810288B1 (zh)
CN (1) CN104170040B (zh)
ES (1) ES2770800T3 (zh)
WO (1) WO2013135505A1 (zh)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105845494B (zh) * 2015-01-15 2019-05-10 施耐德电器工业公司 分流断路系统
DE102018102835B4 (de) * 2018-02-08 2023-03-16 Maschinenfabrik Reinhausen Gmbh Schaltelement für Stufenschalter und Stufenschalter

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1126779A (en) * 1966-08-01 1968-09-11 Ass Elect Ind A switching arrangement employing vacuum switches
DE2702962B2 (de) * 1977-01-25 1979-12-13 Elektrotechnische Werke Fritz Driescher & Soehne, Gmbh & Co, 8052 Moosburg Vakuum-Schaltgerät
IT1309626B1 (it) * 1999-11-03 2002-01-30 Vei Electric Systems Spa Dispositivo di sezionamento e interruzione, per cabine elettriche.
DE19958645C5 (de) * 1999-12-06 2011-05-26 Abb Technology Ag Hybridleistungsschalter
ES2654037T3 (es) * 2003-12-02 2018-02-12 Schneider Electric Energy Manufacturing Italia S.R.L. Dispositivo seccionador/disyuntor para subestaciones eléctricas
DE102005013231B3 (de) * 2005-03-18 2006-09-21 Siemens Ag Kurvenprofilschalter
DE102007038898B3 (de) * 2007-08-13 2008-11-20 Siemens Ag Schalteranordnung für eine Schaltanlage
DE102008045641B3 (de) * 2008-09-03 2010-05-06 Siemens Aktiengesellschaft Nockenwellenantrieb für eine Vakuumschaltröhre und Schaltgerät

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
WO2013135505A1 (de) 2013-09-19
ES2770800T3 (es) 2020-07-03
CN104170040B (zh) 2017-03-08
CN104170040A (zh) 2014-11-26
EP2810288A1 (de) 2014-12-10

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