EP0066533A2 - Sectionneur pour installations à haute tension - Google Patents

Sectionneur pour installations à haute tension Download PDF

Info

Publication number
EP0066533A2
EP0066533A2 EP82730051A EP82730051A EP0066533A2 EP 0066533 A2 EP0066533 A2 EP 0066533A2 EP 82730051 A EP82730051 A EP 82730051A EP 82730051 A EP82730051 A EP 82730051A EP 0066533 A2 EP0066533 A2 EP 0066533A2
Authority
EP
European Patent Office
Prior art keywords
pawl
tear
contact piece
switch
pin
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.)
Granted
Application number
EP82730051A
Other languages
German (de)
English (en)
Other versions
EP0066533B1 (fr
EP0066533A3 (en
Inventor
Werner Ing. Grad. Gruner
Sreenivasan Sampath Kumar
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
Siemens Corp
Original Assignee
Siemens AG
Siemens Corp
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 Siemens AG, Siemens Corp filed Critical Siemens AG
Publication of EP0066533A2 publication Critical patent/EP0066533A2/fr
Publication of EP0066533A3 publication Critical patent/EP0066533A3/de
Application granted granted Critical
Publication of EP0066533B1 publication Critical patent/EP0066533B1/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
    • H01H33/02—Details
    • H01H33/04—Means for extinguishing or preventing arc between current-carrying parts
    • H01H33/12—Auxiliary contacts on to which the arc is transferred from the main contacts
    • 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
    • H01H31/26—Air-break switches for high tension without arc-extinguishing or arc-preventing means with movable contact that remains electrically connected to one line in open position of switch
    • H01H31/32—Air-break switches for high tension without arc-extinguishing or arc-preventing means with movable contact that remains electrically connected to one line in open position of switch with rectilinearly-movable contact

Definitions

  • the invention relates to a disconnector for high-voltage systems with a metallic, grounded and filled with insulating medium high dielectric strength housing and with hollow contact pieces, one of which contains a spring-loaded tear-off switching pin, which at the beginning of the switching-off movement of the contact piece relative to this, in contact with the other contact piece , remains.
  • Such a circuit breaker is known from DE-AS 16 15 898.
  • the metallic housing is filled with SF 6 in particular.
  • Both contact pieces of the isolating switch are moved by a drive in order to either engage with one another in one end position or to form a sufficiently large isolating distance in the other end position at the given voltage.
  • Each switching element is hollow and a tear-off switching pin is arranged inside the one switching element, which a spring attempts to advance in the switching-on direction.
  • a pump device which, when switched on, inhibits the movement of the tear-off switch pin, so that it is delayed in relation to the contact piece surrounding it.
  • the spring maintains this contact even when the switching element starts to switch off. Since the pumping device is taken along by the moving switching element during the switching-off movement, it pumps through the Hollow contact to the tip of the tear-off pin, the insulating medium, in particular SF6, so that when the other contact is released by the tear-off pin, any arcing that may occur is quickly extinguished by flushing with the insulating medium.
  • the known disconnector is therefore able to switch certain low loads.
  • Gas-insulated disconnectors are generally provided with a relatively slow drive for the switching elements for economic reasons. For this reason, they are preferably not switched under load, because if an arc occurs due to the slow switch-off movement, there is a risk that, especially at higher nominal voltages, the arc will migrate to the grounded metal enclosure and thus form a ground fault.
  • the invention has for its object to provide a metal-encapsulated, pressurized gas-insulated disconnector with slowly moving contact pieces, in which arcs of low current can occur without damage. Such arcs occur e.g. B. when switching off unloaded transformers.
  • a circuit breaker of the type described at the outset is designed in accordance with the invention in such a way that the two hollow contact pieces are surrounded by field electrodes, so that the end of the tear-off switching pin is provided with a recess into which a pawl located in the other contact piece engages in the switched-on position, that the pawl mechanically controls the tear-off switch pin at a certain position of the movable contact piece and that the spring returns the tear-off switch pin at a higher speed than the movement of the movable contact piece into the hollow contact piece.
  • the tear-off switching pin in the switched-on position is firmly connected to the other switching element. This is also maintained at the beginning of the switch-off movement, so that the current contact is not interrupted until the relatively slowly moving contact piece has formed a sufficiently large isolating path.
  • the movable contact element takes the tear-off switching pin and the pawl with it, the spring being tensioned. Then the pawl releases the tear-off switch pin at a predetermined position of the movable contact and the spring guides the tear-off switch pin back into the hollow contact at a higher speed than the movement of the movable contact. If a switch-off arc arises due to the presence of a low load, it will be pulled apart due to the high speed with the tear-off switching pin and pawl, quickly interrupted and no longer has the opportunity to migrate to the grounded encapsulation.
  • the shape of the pawl can expediently be chosen as an angle lever which is movable about a pivot point. A better mechanical engagement on the tear-off switch pin is achieved if the pawl is designed like pliers.
  • FIGS. 1 to 6 of the drawing each show a longitudinal section through a circuit breaker, shown schematically. 1 to 4 show one and the same disconnector in different positions, i. H. Fig. 1 shows the switch-off position, Fig. 2 shows the switch-on position and Figs. 3 and 4 show differently selected positions for the release of the tear-off switch pin.
  • FIGS. 5 and 6 each show exemplary embodiments with different designs.
  • the disconnector 1 is located in a tubular, metallic, grounded housing 2, which is closed at the end faces by conical bushing insulators 3, which support the tubular conductor 4 arranged in the center.
  • the housing 2 is filled with SF 6 under pressure.
  • both the movable contact piece 5 and the standing contact piece 6 are surrounded by shielding field electrodes 7.
  • the drive 8 for the movable contact piece 5 is also arranged inside the field electrode 7.
  • a tear-off switching pin 9 which is provided at the end with a recess 10 formed by turning it to a smaller diameter.
  • the tear-off switch pin 9 is held in its rest position by a spring 11. In this he is completely surrounded by the movable contact piece 5 and does not protrude from it.
  • a cylinder 12 in which a piston 13 slides is provided in the interior of the opposite field electrode 7 with the standing contact piece 6.
  • This piston 13 carries, rotatably arranged with the bearing 14, the pawl 15 consisting of an angle lever, which ends in a hook 1 6.
  • the pawl 15 is also held in its rest position by a spring 17 in such a way that, in the switched-off position, it does not protrude beyond the standing contact piece 6.
  • a return spring 18 is provided between the piston 13 and the pawl 15, which pulls the pawl 15 back into the rest position after rotation.
  • the short lever extension 19 adjacent to the bearing 14 projects through a slot in the cylinder 12. In its possible stroke path there is an adjustable and lockable stop 20 which triggers a rotary movement of the pawl 15 via the lever shoulder 19.
  • Fig. 1 shows the off position of the circuit breaker 1, in which the tear-off switch pin 9 with the movable contact piece 5 and the pawl 15 are in the rest position.
  • the switch-on position of the disconnector 1 is shown in FIG. In this switch-on position, the movable contact 5 is in engagement with the stationary contact 6.
  • the pawl 15 is still in the end position, but it protrudes into the hollow movable contact 5 and engages with its hook 16 in the recess 10 of the tear-off switch pin 9. so that in addition to the main current path from the conductor 4 via the movable contact piece 5, the standing contact piece 6, the field electrode 7 to the conductor 4, an auxiliary current path via the tear-off switching pin 9 and the pawl 15 is created.
  • the slowly switching drive 8 first moves the hollow movable contact piece 5 back so far that its connection to the standing contact piece 6 is interrupted and a sufficiently large isolating distance is created while the tear-off switching pin 9 engages remains with the pawl 15 so that any current that may be present now flows solely via the auxiliary current path.
  • the switch-off movement tightens the spring 11, which loads the tear-off switch pin 9, as well as the spring 17 of the pawl 15, since the pawl 15 is carried along by the tear-off switch pin until its lever shoulder 19 abuts the stop 20. This causes a rotation of the pawl 15, whereby the hook 16 comes out of the recess 10 in the tear-off switch pin 9 and releases it.
  • the time of the release of the tear-off switch pin 9 by the pawl 15 can be determined by setting the stop 20 completely. In the position of the stop 20 shown in FIG. 3, the pawl 15 is still within the field electrode 7 at the moment of release. In contrast, the pawl 15 is already in the free position in the position of the stop 20 shown in FIG. 4 from the tear-off switching pin 9 Disconnected distance and only there is the tear-off switch pin 9 free.
  • the return spring 18 guides the pawl 15 back into the rest position after its rotation.
  • Fig. 5 shows a slightly modified embodiment of the circuit breaker 1, the same reference numerals are kept for the same parts.
  • the tear-off switching pin 9 with its spring 11 arranged in the cylinder 12 in the field electrode 7 of the standing contact 6.
  • the pawl 15, on the other hand, is fixed together with the return spring 18 inside the movable contact piece 5, but rotatable via the bearing 14.
  • the angle projection 19 protrudes through a slot in the hollow movable contact piece 5, so that it can run against a stop 20 within the field electrode 7 during the switching-off movement and can thus trigger the rotary movement to release the tear-off switching pin 9.
  • each gun arm 21, 22 leads to a lever shoulder 23, 24, which runs against a stop 20 when the release of the tear-off switch pin 9 is to be triggered,

Landscapes

  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
EP82730051A 1981-06-02 1982-05-04 Sectionneur pour installations à haute tension Expired EP0066533B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3122442 1981-06-02
DE19813122442 DE3122442A1 (de) 1981-06-02 1981-06-02 Trennschalter fuer hochspannungsanlagen

Publications (3)

Publication Number Publication Date
EP0066533A2 true EP0066533A2 (fr) 1982-12-08
EP0066533A3 EP0066533A3 (en) 1984-04-18
EP0066533B1 EP0066533B1 (fr) 1986-12-03

Family

ID=6134058

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82730051A Expired EP0066533B1 (fr) 1981-06-02 1982-05-04 Sectionneur pour installations à haute tension

Country Status (5)

Country Link
US (1) US4445014A (fr)
EP (1) EP0066533B1 (fr)
JP (1) JPS57210527A (fr)
DE (2) DE3122442A1 (fr)
SU (1) SU1122239A3 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2547107A1 (fr) * 1983-06-06 1984-12-07 Merlin Gerin Sectionneur d'isolement blinde
EP0138743A1 (fr) * 1983-08-15 1985-04-24 Siemens Aktiengesellschaft Sectionneur pour appareillage de commutation haute tension, logé dans une enceinte métallique à gaz comprimé
WO1991007768A1 (fr) * 1989-11-17 1991-05-30 Siemens Aktiengesellschaft Sectionneur pour appareillages haute tension sous blindage metallique avec isolation par gaz comprime
DE9109811U1 (de) * 1991-08-05 1991-10-02 Siemens AG, 8000 München Trennschalter
EP2728602A1 (fr) * 2012-11-05 2014-05-07 ABB Technology AG Séparateur de charge haute tension électrique et procédé d'ouverture de celui-ci

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3331024A1 (de) * 1983-08-27 1985-03-14 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Hochspannungstrennschalter, insbesondere einsaeulen-trennschalter, zum schalten kommutierender stroeme
DE3331819A1 (de) * 1983-09-01 1985-03-21 Siemens AG, 1000 Berlin und 8000 München Trennschalter fuer metallgekapselte, druckgasisolierte hochspannungsschaltanlagen
DE4343786C1 (de) * 1993-12-17 1995-02-23 Siemens Ag Hochspannungs-Leistungsschalter mit einer Feldelektrode
EP1569254A1 (fr) * 2004-02-27 2005-08-31 ABB Technology AG Interrupteur de mise à la terre et/ou sectionneur
DE102013205945A1 (de) * 2013-04-04 2014-10-09 Siemens Aktiengesellschaft Trennschalteinrichtung
US10256058B2 (en) * 2015-11-16 2019-04-09 Mitsubishi Electric Corporation Switchgear
CN109643619B (zh) * 2016-08-26 2020-12-25 Abb电网瑞士股份公司 开关和用于断路开关的方法

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1350107A (en) * 1920-08-17 Electric switch
FR874628A (fr) * 1941-04-11 1942-08-13 Delle Atel Const Electr Dispositif de coupure associé à un sectionneur ou à un coupe-circuit sectionneur
FR1261626A (fr) * 1959-07-01 1961-05-19 App Electr Hazemeyer Prise de courant à fermeture et à coupure brusques
US3098915A (en) * 1961-11-16 1963-07-23 S & C Electric Co Circuit interrupter
FR1448854A (fr) * 1965-05-22 1966-08-12 Merlin Gerin Sectionneur à haute tension à coupure sous charge
US3348001A (en) * 1965-07-26 1967-10-17 Westinghouse Electric Corp Electric distribution system
DE1615898C3 (de) * 1967-07-07 1980-06-12 Calor-Emag Elektrizitaets-Aktiengesellschaft, 4030 Ratingen Hochspannungsschalter, insbesondere Lasttrennschalter
CH524887A (de) * 1970-12-14 1972-06-30 Bbc Brown Boveri & Cie Elektrischer Kompressionsschalter
US4271339A (en) * 1976-06-07 1981-06-02 S&C Electric Company High voltage circuit switch arrangement
JPS5559613A (en) * 1978-10-30 1980-05-06 Tokyo Shibaura Electric Co Gas breaker
US4348561A (en) * 1980-08-05 1982-09-07 A. B. Chance Company Mechanical device for picking up an electrical load

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2547107A1 (fr) * 1983-06-06 1984-12-07 Merlin Gerin Sectionneur d'isolement blinde
EP0138743A1 (fr) * 1983-08-15 1985-04-24 Siemens Aktiengesellschaft Sectionneur pour appareillage de commutation haute tension, logé dans une enceinte métallique à gaz comprimé
WO1991007768A1 (fr) * 1989-11-17 1991-05-30 Siemens Aktiengesellschaft Sectionneur pour appareillages haute tension sous blindage metallique avec isolation par gaz comprime
US5237137A (en) * 1989-11-17 1993-08-17 Siemens Aktiengesellschaft Isolating switch for metal-clad, compressed-gas insulated high-voltage switchgear
DE9109811U1 (de) * 1991-08-05 1991-10-02 Siemens AG, 8000 München Trennschalter
EP2728602A1 (fr) * 2012-11-05 2014-05-07 ABB Technology AG Séparateur de charge haute tension électrique et procédé d'ouverture de celui-ci

Also Published As

Publication number Publication date
US4445014A (en) 1984-04-24
SU1122239A3 (ru) 1984-10-30
DE3274595D1 (en) 1987-01-15
EP0066533B1 (fr) 1986-12-03
JPH0113182B2 (fr) 1989-03-03
DE3122442A1 (de) 1982-12-23
JPS57210527A (en) 1982-12-24
EP0066533A3 (en) 1984-04-18

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