EP0354445A2 - Chambre de coupure d'un interrupteur à vide - Google Patents

Chambre de coupure d'un interrupteur à vide Download PDF

Info

Publication number
EP0354445A2
EP0354445A2 EP89114173A EP89114173A EP0354445A2 EP 0354445 A2 EP0354445 A2 EP 0354445A2 EP 89114173 A EP89114173 A EP 89114173A EP 89114173 A EP89114173 A EP 89114173A EP 0354445 A2 EP0354445 A2 EP 0354445A2
Authority
EP
European Patent Office
Prior art keywords
contact
switching chamber
end part
vacuum switch
housing
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
EP89114173A
Other languages
German (de)
English (en)
Other versions
EP0354445A3 (en
EP0354445B1 (fr
Inventor
Karl Dipl.-Ing. Stegmüller
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.)
Schneider Electric Sachsenwerk GmbH
Original Assignee
Sachsenwerk Licht und Kraft AG
Sachsenwerk AG
AEG Sachsenwerk GmbH
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 Sachsenwerk Licht und Kraft AG, Sachsenwerk AG, AEG Sachsenwerk GmbH filed Critical Sachsenwerk Licht und Kraft AG
Publication of EP0354445A2 publication Critical patent/EP0354445A2/fr
Publication of EP0354445A3 publication Critical patent/EP0354445A3/de
Application granted granted Critical
Publication of EP0354445B1 publication Critical patent/EP0354445B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • H01H33/60—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
    • H01H33/662—Housings or protective screens
    • H01H33/66207—Specific housing details, e.g. sealing, soldering or brazing
    • 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
    • H01H33/662—Housings or protective screens
    • H01H33/66238—Specific bellows details
    • 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
    • H01H33/662—Housings or protective screens
    • H01H33/66238—Specific bellows details
    • H01H2033/66246—Details relating to the guiding of the contact rod in vacuum switch belows

Definitions

  • the innovation relates to a switching chamber of a vacuum switch according to the preamble of claim 1.
  • Such a switching chamber is known from US-PS 30 82 307, in which a double-curved metallic intermediate part is provided in Figure 6 between the contact pin and insulator.
  • the distance between the two parts is relatively small and the intermediate part overlaps the contact bolt at the connection point, which corresponds to a rigid clamping.
  • the insulator is a glass tube into which the other end of the intermediate part is melted. Due to the features described, the intermediate part can be regarded as relatively stiff.
  • the known switching chamber is not suitable for large numbers of switching with large current loads.
  • the innovation is based on the task of further developing switching chambers of the known type for mastering large currents with high switching numbers.
  • the switching chamber consists of a movable contact 1, and a fixed contact 2, the fixed contact pin 3 of Figure 1 is connected to a crossbar 7 via a screw 11.
  • the contacts 1, 2 are surrounded by a housing which consists of two ceramic tubes 5 and a jacket tube 6 made of metal arranged between them.
  • the housing is connected to the fixed contact pin 3 via the end part 4.
  • the chamber On the side of the movable contact 1, the chamber is closed in a vacuum-tight manner by an end cover and a bellows.
  • a guide bush 8 supports the contact pin of the movable contact.
  • the guide bush 8 is mounted in the support body 9.
  • FIG. 2 shows an embodiment of the end part 4 in the form of a simple shaft.
  • the end part 4 is fastened with its outer end 4a to the end face 14 of the ceramic tube 5, while it is likewise fastened with its end face to the outer surface 12 of the contact bolt 3 at the inner end 4b.
  • a multi-shaft end part 4 is shown especially for switchgear chambers with a large diameter.
  • the connection points are subject to the same criteria as in FIG. 2.
  • it is particularly advantageous if the length of the neutral fiber of the End part is at least 1.5 times longer than the linear distance a between the outer fastening point and the lateral surface 12 of the contact bolt 3.
  • Such a shape also allows forces acting in the lateral or twisting direction to be absorbed on the fixed contact 2 without endangering the housing.
  • the end part 4 not only has a wavy shape, but that it is fastened with the end face to the connecting pieces 5 and 3, respectively.
  • the shrinkage stresses which arise due to the different thermal expansion coefficients of the ceramic material and the material for the end part can be kept within low limits. These shrinkage stresses decrease with the ratio of the thicknesses s of the end part 4 to the thickness t of the ceramic tube 5.
  • the frontal attachment to both ends of the end part 4 means a certain flexibility of the same. Due to this articulation, the spring constant of the end part 4 is lower than with a fastening which corresponds to a rigid clamping.
  • the fastening of the end part 4 according to the invention with the contact bolt 3 also secures the under asymmetric loads large short-circuit currents possible adjustment forces in the sense of a slight rotation of the contact bolt around the end part 4.
  • the end part 4 is an elastic component despite its low spring constant. So that the housing does not swing up and down due to slight vibrations, it is advantageous to arrange an elastic support ring 15 between the guide bushing 8 and the support body 9 without gaps.
  • a buffer 10 should be arranged around the fixed contact pin, against which the housing can preferably strike with the outer edge of the ceramic tube 5 in the event of elastic deflections. Such elastic deformations are limited by this buffer and thus ensure that the associated stresses remain limited to low values.

Landscapes

  • High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
EP89114173A 1988-08-06 1989-08-01 Chambre de coupure d'un interrupteur à vide Expired - Lifetime EP0354445B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8810063U DE8810063U1 (de) 1988-08-06 1988-08-06 Schaltkammer eines Vakuumschalters
DE8810063U 1988-08-06

Publications (3)

Publication Number Publication Date
EP0354445A2 true EP0354445A2 (fr) 1990-02-14
EP0354445A3 EP0354445A3 (en) 1990-12-12
EP0354445B1 EP0354445B1 (fr) 1994-12-28

Family

ID=6826715

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89114173A Expired - Lifetime EP0354445B1 (fr) 1988-08-06 1989-08-01 Chambre de coupure d'un interrupteur à vide

Country Status (4)

Country Link
US (1) US4983793A (fr)
EP (1) EP0354445B1 (fr)
JP (1) JPH0282418A (fr)
DE (2) DE8810063U1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3825407A1 (de) * 1988-07-27 1990-02-01 Sachsenwerk Ag Schaltkammer eines vakuumschalters
US6867385B2 (en) * 2003-02-21 2005-03-15 Mcgraw-Edison Company Self-fixturing system for a vacuum interrupter
EP1760743A1 (fr) * 2005-09-02 2007-03-07 ABB Research Ltd Disjoncteur à vide avec un contact mobile monté en rotation
FR2951314A1 (fr) * 2009-10-12 2011-04-15 Schneider Electric Ind Sas Dispositif d'assemblage par brasage d'un capot d'extremite sur un corps cylindrique et ampoule a vide comportant un tel dispositif
CN104330733A (zh) * 2014-11-21 2015-02-04 西安伯龙高铁电气有限公司 列车车顶绝缘检测装置
KR102545133B1 (ko) * 2016-04-05 2023-06-19 엘에스일렉트릭(주) 진공 차단기의 진공 인터럽터
JP7004027B2 (ja) 2020-06-18 2022-01-21 株式会社明電舎 真空インタラプタおよび真空遮断器

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3082307A (en) * 1959-04-30 1963-03-19 Gen Electric Vacuum type circuit interrupter
FR2038481A6 (fr) * 1968-04-29 1971-01-08 Inst Prueffeld Elekt
US3657502A (en) * 1969-03-27 1972-04-18 Westinghouse Electric Corp Deflecting end-plate construction for vacuum-type circuit interrupters
JPS56156626A (en) * 1980-05-06 1981-12-03 Meidensha Electric Mfg Co Ltd Vacuum breaker
US4478347A (en) * 1981-01-23 1984-10-23 Westinghouse Electric Corp. Unitary end closure and seal shield member for vacuum interrupter
DE8212546U1 (de) * 1982-04-30 1986-02-20 Siemens AG, 1000 Berlin und 8000 München Vakuumschaltröhre
DE3501603A1 (de) * 1984-02-02 1985-08-01 Westinghouse Electric Corp., Pittsburgh, Pa. Niederspannung-hochfrequenz-vakuumschalter

Also Published As

Publication number Publication date
DE58908824D1 (de) 1995-02-09
JPH0282418A (ja) 1990-03-23
DE8810063U1 (de) 1988-09-29
US4983793A (en) 1991-01-08
EP0354445A3 (en) 1990-12-12
EP0354445B1 (fr) 1994-12-28

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