EP0072771A1 - Interrupteur uni- ou multipolaire pour installations de haute tension à gaz blindées et isolées - Google Patents

Interrupteur uni- ou multipolaire pour installations de haute tension à gaz blindées et isolées Download PDF

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Publication number
EP0072771A1
EP0072771A1 EP82730095A EP82730095A EP0072771A1 EP 0072771 A1 EP0072771 A1 EP 0072771A1 EP 82730095 A EP82730095 A EP 82730095A EP 82730095 A EP82730095 A EP 82730095A EP 0072771 A1 EP0072771 A1 EP 0072771A1
Authority
EP
European Patent Office
Prior art keywords
burn
arc
resistant
continuous current
contact piece
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.)
Withdrawn
Application number
EP82730095A
Other languages
German (de)
English (en)
Inventor
Rüdiger Dr. rer.nat. Hess
Heiner Marin
Christian Pircher
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
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 filed Critical Siemens AG
Publication of EP0072771A1 publication Critical patent/EP0072771A1/fr
Withdrawn legal-status Critical Current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
    • H01H33/045—Means for extinguishing or preventing arc between current-carrying parts for arcs formed during closing

Definitions

  • the invention relates to a single-pole or multi-pole switch for encapsulated, pressurized gas-insulated high-voltage switchgear, each with a stationary and a movable contact piece, on which contact parts for guiding the continuous current in the closed state and adjacent, separate, annular or pin-shaped arc electrodes made of burn-resistant material are arranged, wherein the burn-off-resistant arc electrode on the stationary contact piece projects over the continuous current contact part in the direction of the movable contact piece.
  • Such a switch is known from DE-OS 29 43 881.
  • the cylindrical permanent current contact part is surrounded by a burn-resistant, ring-shaped, shield-like arc electrode on the standing contact and, in addition, a pin-shaped arc electrode with an arc protection piece made of burn-resistant material is provided in the center.
  • burn-off-resistant arc electrodes made of a carbon-containing material, such as graphite, or made of a copper-tungsten alloy, project through the continuous current contact part on the stationary contact in the direction of the moving contact.
  • the movable contact has in the same way a cylindrical, movable continuous current contact part which is surrounded by an annular, cylindrical, burn-resistant arc electrode and in the middle of which there is likewise a movable arc electrode with an arc protection piece at the tip.
  • the drive of the moving Switch piece is designed so that when switching on the continuous current contact part bridges the switching path and is brought into engagement with the standing continuous current contact part. Only then does the somewhat remaining movable arc electrode reach the stationary at a low speed.
  • the movable permanent current contact part is first withdrawn, and only when a sufficient insulation distance has been reached are the central arc electrodes also separated from one another, which may result in a switch-off arc.
  • the special design of the switching pieces and the drive is made in the known disconnector to prevent that the arc protection pieces of the central arc electrodes can be damaged by shocks when switched on.
  • the invention has for its object to provide a switch that can be used as a disconnector or earthing switch for encapsulated, pressurized gas-insulated high-voltage switchgear with a simple structure in which the movable continuous current contact part cannot be damaged by the flashover arc.
  • a single or multi-pole switch of the type described in the introduction is designed such that when the switch-on movement occurs, the shortest distance which triggers the flashover occurs only between the burn-off-resistant arc electrodes and then that the continuous current contact part on the movable contact piece only with the Continuous current contact part on the fixed contact piece interacts to carry current.
  • a screen made of largely arc-resistant insulating material between the burn-off-resistant arc electrode and the continuous current contact part on the movable contact piece. This also protects the continuous current contact part of the movable contact piece by covering it against the effect of the flashover arc, which can only form between the burn-resistant arc electrodes.
  • a particularly advantageous embodiment of the invention results in the case of a knife-shaped, movable contact piece if the burn-resistant arc electrode on the front face of the movable contact piece is arranged and the burn-resistant arc electrode lying on the stationary contact piece extends at a short distance from the movable burn-resistant contact part over the switching path which lies between the ignition of the flashover arc until the permanent current contact parts engage.
  • the base points of the flashover arc thus remain restricted to an area of the knife-shaped movable contact which does not come into engagement with the fixed continuous current contact part.
  • the power supply to the burn-resistant arc electrode arranged on the standing contact piece can be guided in such a way that the current path which arises during the flashover arc forms a loop directed away from the continuous current contact parts. Then the flashover arc is blown away from the continuous current contact parts by electrodynamic forces. If the flash-proof arc electrodes are to be touched to extinguish the flashover arc, it is advisable to store one of them with a spring.
  • FIGS. 1 to 5 of the drawing. 2 to 5 each schematically show longitudinal sections through the switch in different switch-on positions;
  • Fig. 1 shows, also schematically, a side view of a switch with indicated different switching positions of the movable contact.
  • the pivotable on a drive shaft 1 movable contact piece 2 is designed as a knife.
  • the moving contact 2 has an area acting as a continuous current contact part 3, which lies below the front end face 4 of the knife and, in the switched-on position, as indicated by dash-dotted lines on the left, engages with the continuous current contact part 5 of the stationary contact 6.
  • This also consists of the contact carrier 7 and the burn-resistant arc electrode 8 either made of carbon-containing material, such as graphite, or of a copper-tungsten alloy.
  • burn-resistant arc electrode 9 made of the appropriate material, which, during the switch-on movement of the movable contact piece 2 from the switch-off position indicated by dash-dotted lines on the right, after passing through the required insulating distance, first at a short distance in front of the end face 10 fixed burn-resistant arc electrode 8 passes, so that a flashover 11 ignites between the two when switched on voltage.
  • the length of the abbrenrifesten arc electrode 8 is that of ignition of the pre-arcing arc 11 until the engagement of the continuous current contacts 3 and 5 into each of the short distance between the abbrennfesten Lichtbo g enelektroden 8 and 9 is maintained, can be so that only here the pre-arcing arc 11 are selected so and thus an overlap on the continuous current contact parts 3 and 5 is avoided.
  • the current supply via the contact carrier 7 to the burn-off-proof arc electrode 8 on the standing contact 6 is selected so that the current loop 17 indicated by the dashed line in FIG. 1, which is directed away from the area of the continuous current contact parts 3, 5, is subordinate to the flashover arc 11.
  • One on the front end face 4 of the movable contact piece 2 on the burn-resistant arc electrode 9 arranged screen 12 made of largely arc-resistant insulating material also covers the area of the continuous current contact part 3 against the flashover 11.
  • This special design of the switch ensures that the continuous current contact part 3 of the movable contact piece 2 cannot be damaged by the effects of an arc during the flashover, because there is a strict spatial separation of the two contact areas during the entire switch-on movement.
  • the shortest distance first occurs only between the burn-resistant arc electrodes 8 and 9, respectively.
  • the movable contact piece 2 is tubular both in the area of the continuous current contact part 3 and in the area of the burn-resistant arc electrode 9.
  • the burn-resistant arc electrode 9 is also arranged here on the front end face 4 of the movable switching element 2 and on the inside there is the also cylindrical shield 12 made of arc-resistant insulating material, which is longer than the burn-resistant arc electrode 9.
  • the standing contact 6 consists of a lamella contact designed as a continuous current contact part 5, which is surrounded by a tubular, burn-resistant arc electrode 8, which projects in the direction of the movable contact 2 via the standing continuous current contact part 5.
  • the movable switching element 2 approaches the stationary switching element 6 and at a certain short distance between the burn-resistant arc electrodes 8 and 9, the ignition of the flashover arc 11 occurs when the voltage is switched on.
  • the shield 12 protects the continuous current contact parts 3. 5 located in the interior against the action of the flashover arc 11, such as radiation and sparring.
  • the lamella contact which is the continuous current contact.
  • Part 5 of the standing contact 6 forms, finally comes into engagement with the inner wall of the tubular continuous current contact part 3 of the movable contact 2, whereby the flashover arc 11 is short-circuited and goes out. Since no arcing has occurred between these surfaces that come into engagement with one another, such a switch can achieve very high switching numbers without damaging the continuous current contacts 3 and 5.
  • the standing contact 6 consists of a lamella contact forming the continuous current contact part 5 with an internal contact surface, which is surrounded by a cylinder 13, on the front end face 14 of which the annular, standing, burn-resistant arc electrode 8 is arranged.
  • the movable contact piece 2 consists of an external tube 15, which carries the burn-resistant arc electrode 9 on its front end face 16. Its inner surface is covered by a cylindrical screen 12 made of arc-resistant insulating material. In the interior of the tube 15 there is also the switching pin forming the continuous current contact part 3 of the movable contact piece 2.
  • the tube 15 first moves with the burn-resistant one Arc electrode 9 towards the standing contact piece 6 until the flashover arc 11 ignites due to the voltage present between the two arc electrodes 8 and 9 that are resistant to burning. Its effects on the interior are prevented by the inner cylindrical screen 12.
  • an outward current loop also drives the flashover 11 away from the interior.
  • the internal switching pin which forms the continuous current contact part 3, then moves with a delay toward the stationary switching element 6 until it comes into engagement (FIG. 4) with the continuous current contact part 5 designed there as a lamella contact and the flashover arc extinguishes.
  • the spatial separation from the arc electrodes 8 and 9 that are resistant to burn-off prevents the permanent current contact parts 3 and 5 from being damaged by arcing effects.

Landscapes

  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Gas-Insulated Switchgears (AREA)
  • Transformer Cooling (AREA)
EP82730095A 1981-08-11 1982-07-12 Interrupteur uni- ou multipolaire pour installations de haute tension à gaz blindées et isolées Withdrawn EP0072771A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19813132123 DE3132123A1 (de) 1981-08-11 1981-08-11 Ein- oder mehrpoliger schalter fuer gekapselte, druckgasisolierte hochspannungsschaltanlagen
DE3132123 1981-08-11

Publications (1)

Publication Number Publication Date
EP0072771A1 true EP0072771A1 (fr) 1983-02-23

Family

ID=6139291

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82730095A Withdrawn EP0072771A1 (fr) 1981-08-11 1982-07-12 Interrupteur uni- ou multipolaire pour installations de haute tension à gaz blindées et isolées

Country Status (3)

Country Link
EP (1) EP0072771A1 (fr)
JP (1) JPS5834521A (fr)
DE (1) DE3132123A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015113794A3 (fr) * 2014-01-31 2015-10-08 Siemens Aktiengesellschaft Sectionneur de mise à la terre pour installations électriques ferroviaires et procédé de mise à la terre d'une partie d'une installation électrique ferroviaire au moyen d'un sectionneur de mise à la terre

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005017939A1 (de) * 2005-04-18 2006-10-19 Abb Technology Ag Elektrische Schaltanlage

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE678031C (de) * 1938-10-19 1939-07-07 Studiengesellschaft Fuer Hochl Loeschkammerschalter fuer hohe Spannung
GB541281A (en) * 1940-08-19 1941-11-20 Gen Electric Co Ltd Improvements in or relating to electric switches having knuckling contacts
US2769062A (en) * 1952-10-21 1956-10-30 Westinghouse Electric Corp Air circuit breaker contacts
FR2048151A5 (fr) * 1969-06-02 1971-03-19 Merlin Gerin
DE2048683A1 (de) * 1970-10-03 1972-04-06 Howaldtswerke Deutsche Werft Hochspannungsschalter
CH536023A (fr) * 1971-11-12 1973-04-15 Gardy Particip App Appareil électrique destiné à établir une connexion
FR2189850A1 (fr) * 1972-06-19 1974-01-25 Krone Gmbh
FR2285700A1 (fr) * 1974-09-19 1976-04-16 Alsthom Cgee Dispositif de coupure
FR2344987A1 (fr) * 1976-03-15 1977-10-14 Merlin Gerin Sectionneur de mise a la terre pour poste blinde a haute tension

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE678031C (de) * 1938-10-19 1939-07-07 Studiengesellschaft Fuer Hochl Loeschkammerschalter fuer hohe Spannung
GB541281A (en) * 1940-08-19 1941-11-20 Gen Electric Co Ltd Improvements in or relating to electric switches having knuckling contacts
US2769062A (en) * 1952-10-21 1956-10-30 Westinghouse Electric Corp Air circuit breaker contacts
FR2048151A5 (fr) * 1969-06-02 1971-03-19 Merlin Gerin
DE2048683A1 (de) * 1970-10-03 1972-04-06 Howaldtswerke Deutsche Werft Hochspannungsschalter
CH536023A (fr) * 1971-11-12 1973-04-15 Gardy Particip App Appareil électrique destiné à établir une connexion
FR2189850A1 (fr) * 1972-06-19 1974-01-25 Krone Gmbh
FR2285700A1 (fr) * 1974-09-19 1976-04-16 Alsthom Cgee Dispositif de coupure
FR2344987A1 (fr) * 1976-03-15 1977-10-14 Merlin Gerin Sectionneur de mise a la terre pour poste blinde a haute tension

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015113794A3 (fr) * 2014-01-31 2015-10-08 Siemens Aktiengesellschaft Sectionneur de mise à la terre pour installations électriques ferroviaires et procédé de mise à la terre d'une partie d'une installation électrique ferroviaire au moyen d'un sectionneur de mise à la terre

Also Published As

Publication number Publication date
JPS5834521A (ja) 1983-03-01
DE3132123A1 (de) 1983-03-03

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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AK Designated contracting states

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STAA Information on the status of an ep patent application or granted ep patent

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18D Application deemed to be withdrawn

Effective date: 19840202

RIN1 Information on inventor provided before grant (corrected)

Inventor name: PIRCHER, CHRISTIAN

Inventor name: MARIN, HEINER

Inventor name: HESS, RUEDIGER, DR. RER.NAT.