EP0015865B1 - Elektrischer Druckgasschalter - Google Patents

Elektrischer Druckgasschalter Download PDF

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Publication number
EP0015865B1
EP0015865B1 EP80730011A EP80730011A EP0015865B1 EP 0015865 B1 EP0015865 B1 EP 0015865B1 EP 80730011 A EP80730011 A EP 80730011A EP 80730011 A EP80730011 A EP 80730011A EP 0015865 B1 EP0015865 B1 EP 0015865B1
Authority
EP
European Patent Office
Prior art keywords
contact
switching unit
ring
circuit breaker
sliding 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.)
Expired
Application number
EP80730011A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0015865A1 (de
Inventor
Rüdiger Dr. rer. nat. Hess
Heiner Marin
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
Priority to AT80730011T priority Critical patent/ATE600T1/de
Publication of EP0015865A1 publication Critical patent/EP0015865A1/de
Application granted granted Critical
Publication of EP0015865B1 publication Critical patent/EP0015865B1/de
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
    • H01H33/70—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid
    • H01H33/88—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts
    • H01H33/90—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts this movement being effected by or in conjunction with the contact-operating mechanism
    • H01H33/91—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts this movement being effected by or in conjunction with the contact-operating mechanism the arc-extinguishing fluid being air or gas

Definitions

  • the invention relates to an electric pressure gas switch with a blowing device consisting of a piston and cylinder, with two fixed nozzle-shaped switching elements and a tubular bridging switching element connecting them in the switched-on position, which consists of contact lamellae resiliently mounted in the interior of a tubular sleeve and an end face with the interposition of electrical insulation composed sliding contact ring made of arc-resistant material.
  • the sliding contact ring is galvanically isolated from the contact blades in the switched-on position.
  • the contact lamellae are galvanically connected to the sliding contact ring immediately before the contact lamellae are separated from the fixed contact piece which is still conductively connected to the sliding contact ring.
  • the contact blades come into engagement with a projecting edge of the sliding contact ring, which forms a stop for the radially inward movement of the contact blades.
  • the invention has for its object to provide a gas pressure switch of the type mentioned, with which the breaking capacity and the life of the contact blades is increased, in particular short-circuit currents should be able to be safely switched under the conditions of the short-circuit distance of more than 60 kiloamps. According to the invention, this is achieved in that at least one of the contact lamellae is permanently connected to the sliding contact ring in an electrically conductive manner.
  • the current is commutated from the contact lamellae to the sliding contact ring without delay, so that the release of larger amounts of metal vapor from the contact lamellae under the influence of arcs is avoided.
  • the sliding contact ring is not directly conductively connected to the tubular sleeve, so that only a single main current path is formed through all contact lamellae. This ensures the advantage that a weakening of the contact force cannot occur due to parallel current paths.
  • a contact lamella is pressed resiliently against the sliding contact ring.
  • the contact lamella itself can be associated with play with respect to the one fixed switching contact piece and thus continuously load the sliding contact ring.
  • connection of the contact lamella to the sliding contact ring is provided via a flexible current band.
  • an electrical pressure gas switch with the parts necessary for understanding the invention is shown schematically in a half section.
  • the compressed gas switch shown in the figure is a high-voltage switch for 110 to 170 kV, for example, in which sulfur hexafluoride is used as an extinguishing and insulating agent.
  • the switch has e.g. made of porcelain switching chamber 1, in the interior of which two fixed switching pieces 2, 3 are arranged.
  • the switching pieces 2, 3 carry nozzle bodies 4, 5 on the end face, which consist of a material which is resistant to erosion.
  • the two fixed contact pieces 2, 3 are bridged in the switched-on position by a tubular bridging contact piece 6, which consists of a tubular sleeve 6a, in the interior of which spring-loaded contact plates 7 are arranged distributed uniformly over the circumference.
  • the tubular sleeve 6a has a sliding contact ring 8 on the end face, which is made of arc-resistant material, e.g. Graphite, and is interposed with electrical insulation 9.
  • the sliding contact ring 8 has a projection 8a directed towards the contact plates 7, on which the contact plates 7 can be supported.
  • one of the contact lamellae 7a is permanently connected to the sliding contact ring 8, namely in that the contact lamella 7a is constantly resiliently pressed against the sliding contact ring 8.
  • the contact lamella on both sides with a contact lug 7b, so that it participates in the current transmission like the other contact lamellae 7.
  • the connection of the contact plate 7a with the slide contact ring made via a flexible current band.
  • the blowing cylinder 11 of a blowing device is simultaneously moved in the same direction, so that the blowing volume 12 enclosed by the blowing cylinder 11 is compressed against a relatively fixed piston 13 of the blowing device.

Landscapes

  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Circuit Breakers (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Organic Insulating Materials (AREA)
  • Pens And Brushes (AREA)
  • Switches Operated By Changes In Physical Conditions (AREA)
EP80730011A 1979-03-06 1980-02-15 Elektrischer Druckgasschalter Expired EP0015865B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT80730011T ATE600T1 (de) 1979-03-06 1980-02-15 Elektrischer druckgasschalter.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2908982A DE2908982C3 (de) 1979-03-06 1979-03-06 Elektrischer Druckgasschalter
DE2908982 1979-11-21

Publications (2)

Publication Number Publication Date
EP0015865A1 EP0015865A1 (de) 1980-09-17
EP0015865B1 true EP0015865B1 (de) 1982-01-20

Family

ID=6064770

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80730011A Expired EP0015865B1 (de) 1979-03-06 1980-02-15 Elektrischer Druckgasschalter

Country Status (9)

Country Link
US (1) US4354073A (pt)
EP (1) EP0015865B1 (pt)
JP (1) JPS6031142Y2 (pt)
AT (1) ATE600T1 (pt)
BR (1) BR8001302A (pt)
CA (1) CA1148593A (pt)
DE (1) DE2908982C3 (pt)
MX (1) MX147086A (pt)
ZA (1) ZA801275B (pt)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3113325A1 (de) * 1981-03-30 1982-06-24 Ernst Prof. Dr.techn.habil. 1000 Berlin Slamecka Hochspannungsschaltkammer
DE4402935A1 (de) * 1994-02-01 1995-08-03 Abb Patent Gmbh Kontaktsystem für einen Hochspannungsleistungsschalter

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH506875A (de) * 1969-03-14 1971-04-30 Siemens Ag Elektrischer Schalter
DE2209287C3 (de) * 1972-02-22 1974-12-12 Siemens Ag, 1000 Berlin Und 8000 Muenchen Elektrischer Druckgasschalter
DE2438017C3 (de) * 1974-08-05 1981-07-02 Siemens AG, 1000 Berlin und 8000 München Druckgasschalter

Also Published As

Publication number Publication date
DE2908982C3 (de) 1982-01-28
DE2908982A1 (de) 1980-09-18
JPS6031142Y2 (ja) 1985-09-18
JPS55127348U (pt) 1980-09-09
EP0015865A1 (de) 1980-09-17
BR8001302A (pt) 1980-11-04
ATE600T1 (de) 1982-02-15
ZA801275B (en) 1981-03-25
DE2908982B2 (de) 1981-05-07
US4354073A (en) 1982-10-12
MX147086A (es) 1982-09-30
CA1148593A (en) 1983-06-21

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