EP0069822A2 - Corps d'une buse en matière isolante pour un disjoncteur électrique à gaz comprimé - Google Patents

Corps d'une buse en matière isolante pour un disjoncteur électrique à gaz comprimé Download PDF

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Publication number
EP0069822A2
EP0069822A2 EP82102088A EP82102088A EP0069822A2 EP 0069822 A2 EP0069822 A2 EP 0069822A2 EP 82102088 A EP82102088 A EP 82102088A EP 82102088 A EP82102088 A EP 82102088A EP 0069822 A2 EP0069822 A2 EP 0069822A2
Authority
EP
European Patent Office
Prior art keywords
nozzle body
insulating material
switch
insert ring
nozzle
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
EP82102088A
Other languages
German (de)
English (en)
Other versions
EP0069822B1 (fr
EP0069822A3 (en
Inventor
Hans-Rudolf Wüthrich
Beat Jaeggi
Peter Krebs
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.)
Rockwell Automation Switzerland GmbH
Original Assignee
Sprecher und Schuh 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=4278561&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0069822(A2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Sprecher und Schuh AG filed Critical Sprecher und Schuh AG
Priority to AT82102088T priority Critical patent/ATE15567T1/de
Publication of EP0069822A2 publication Critical patent/EP0069822A2/fr
Publication of EP0069822A3 publication Critical patent/EP0069822A3/de
Application granted granted Critical
Publication of EP0069822B1 publication Critical patent/EP0069822B1/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
    • H01H33/70—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid
    • H01H33/7015—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid characterised by flow directing elements associated with contacts
    • H01H33/7076—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid characterised by flow directing elements associated with contacts characterised by the use of special materials

Definitions

  • the invention relates to an insulating material nozzle body for an electrical pressure gas switch with two contact pieces which can be brought into and out of engagement, one of which closes the nozzle opening in the switched-on position of the pressure gas switch and releases it during the switch-off movement.
  • the object of the present invention is to provide an insulating material nozzle body for an electrical compressed gas shell to create ter that does not have to be replaced as often as the well-known insulating nozzle body.
  • the insulating material nozzle body is provided with an erosion-resistant insert ring in the area of the narrowest point.
  • the erosion-resistant insert ring is more resistant to arcing than the other parts of the insulating material nozzle. For this reason, a leak which affects the extinguishing properties of the compressed gas switch will only occur between the narrowest point of the nozzle body and the contact piece guided therein, after a very high number of switching operations, the known advantages of an insulating material nozzle being able to be retained.
  • the erosion-resistant insert ring advantageously consists of graphite. Graphite does not evaporate and does not melt in the event of arcing. For this reason, a graphite insert ring is also well suited for SF 6 pressure gas switches.
  • the axial extent of the insert ring is advantageously between 15 and 30% of the axial dimension of the nozzle body. With these axial dimensions, most electrically conductive, erosion-resistant insert rings, which have a floating potential, cause only a negligible shortening of the electrical insulating distance between the open contact pieces.
  • the insulating body made of polytetrafluoroethylene shown in Fig. 1 is screwed together from two parts, 1 and 2. Between the two parts 1 and 2, the insert ring 3 made of graphite is clamped.
  • the erosion-resistant insert ring 3 made of graphite remains practically unchanged after a large number of short-circuit current interruptions and encloses the contact piece 4 without a leak.
  • an extinguishing agent pressure required for the arc extinguishing can arise until the nozzle opening is released.
  • the other parts of the gas pressure switch, such as the other contact piece, the extinguishing gas pressure generating device, the housing and the attachment of the nozzle body are not shown because of the better clarity.
  • the axial extension 6 of the graphite insert ring 3 is 24% of the axial length 7 of the entire nozzle body. With this length ratio, the shortening of the electrical insulating distance between the open contact pieces is negligible or can be easily corrected if necessary.
  • FIG. 8 Another embodiment variant is shown in FIG.
  • the graphite insert ring 8 is first produced and then the nozzle body 9 made of polytetrafluoroethylene is attached.

Landscapes

  • Circuit Breakers (AREA)
  • Inorganic Insulating Materials (AREA)
EP82102088A 1981-07-13 1982-03-15 Corps d'une buse en matière isolante pour un disjoncteur électrique à gaz comprimé Expired EP0069822B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT82102088T ATE15567T1 (de) 1981-07-13 1982-03-15 Isolierstoffduesenkoerper fuer einen elektrischen druckgasschalter.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH4570/81 1981-07-13
CH457081 1981-07-13

Publications (3)

Publication Number Publication Date
EP0069822A2 true EP0069822A2 (fr) 1983-01-19
EP0069822A3 EP0069822A3 (en) 1983-08-31
EP0069822B1 EP0069822B1 (fr) 1985-09-11

Family

ID=4278561

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82102088A Expired EP0069822B1 (fr) 1981-07-13 1982-03-15 Corps d'une buse en matière isolante pour un disjoncteur électrique à gaz comprimé

Country Status (3)

Country Link
EP (1) EP0069822B1 (fr)
AT (1) ATE15567T1 (fr)
DE (1) DE3266111D1 (fr)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1002058B (de) * 1954-08-11 1957-02-07 Licentia Gmbh Isolierkoerper fuer Schaltkammern von Hochspannungsschaltern
DE1194949B (fr) * 1961-10-24 1965-06-16
DE1281528B (de) * 1965-02-12 1968-10-31 Fabriek Van Electrische App N Loeschkammer fuer Hochspannungsschalter mit einer Innenauskleidung aus Kunststoff
DE2039240A1 (de) * 1969-08-12 1971-04-08 Merlin Gerin Druckgasschalter,insbesondere mit Selbstbeblasung
DE7314984U (de) * 1973-03-20 1975-02-06 Bbc Ag Brown Boveri & Cie Isolierdüsenkörper für die Verwendung in Schaltkammern elektrischer Unterbrecher
DE2533506A1 (de) * 1975-07-26 1977-02-10 Licentia Gmbh Der lichtbogeneinwirkung ausgesetzte duesenanordnung in einem hochspannungsschalter
DE2924994A1 (de) * 1979-06-21 1981-01-22 Bbc Brown Boveri & Cie Leistungsschalter

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1002058B (de) * 1954-08-11 1957-02-07 Licentia Gmbh Isolierkoerper fuer Schaltkammern von Hochspannungsschaltern
DE1194949B (fr) * 1961-10-24 1965-06-16
DE1281528B (de) * 1965-02-12 1968-10-31 Fabriek Van Electrische App N Loeschkammer fuer Hochspannungsschalter mit einer Innenauskleidung aus Kunststoff
DE2039240A1 (de) * 1969-08-12 1971-04-08 Merlin Gerin Druckgasschalter,insbesondere mit Selbstbeblasung
DE7314984U (de) * 1973-03-20 1975-02-06 Bbc Ag Brown Boveri & Cie Isolierdüsenkörper für die Verwendung in Schaltkammern elektrischer Unterbrecher
DE2533506A1 (de) * 1975-07-26 1977-02-10 Licentia Gmbh Der lichtbogeneinwirkung ausgesetzte duesenanordnung in einem hochspannungsschalter
DE2924994A1 (de) * 1979-06-21 1981-01-22 Bbc Brown Boveri & Cie Leistungsschalter

Also Published As

Publication number Publication date
EP0069822B1 (fr) 1985-09-11
EP0069822A3 (en) 1983-08-31
ATE15567T1 (de) 1985-09-15
DE3266111D1 (en) 1985-10-17

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