EP0149061A1 - Interrupteur sous vide pour la basse tension, en particulier protecteur à basse tension - Google Patents

Interrupteur sous vide pour la basse tension, en particulier protecteur à basse tension Download PDF

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Publication number
EP0149061A1
EP0149061A1 EP84114144A EP84114144A EP0149061A1 EP 0149061 A1 EP0149061 A1 EP 0149061A1 EP 84114144 A EP84114144 A EP 84114144A EP 84114144 A EP84114144 A EP 84114144A EP 0149061 A1 EP0149061 A1 EP 0149061A1
Authority
EP
European Patent Office
Prior art keywords
vacuum
vacuum switch
shielding cylinder
insulator
switch according
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
EP84114144A
Other languages
German (de)
English (en)
Other versions
EP0149061B1 (fr
Inventor
Wilfried Kuhl
Edwin Gemmel
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 EP0149061A1 publication Critical patent/EP0149061A1/fr
Application granted granted Critical
Publication of EP0149061B1 publication Critical patent/EP0149061B1/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
    • H01H33/60—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
    • H01H33/66261—Specific screen details, e.g. mounting, materials, multiple screens or specific electrical field considerations

Definitions

  • the invention relates to a vacuum switch for the low-voltage range, in particular a low-voltage contactor, consisting of a vacuum switching tube with a switching chamber and a first contact piece fixed therein, and a power supply bolt that is movable relative thereto and a second contact piece, the vacuum switching tube having an insulator section that is at least partially shielded on the vacuum side is surrounded.
  • a low-voltage contactor consisting of a vacuum switching tube with a switching chamber and a first contact piece fixed therein, and a power supply bolt that is movable relative thereto and a second contact piece, the vacuum switching tube having an insulator section that is at least partially shielded on the vacuum side is surrounded.
  • Each switch contains a high-resistance insulating section, which should not change as far as possible during the entire life of the switch.
  • dust and water vapor and the like can deposit on the insulator on the atmospheric side, while metal vapor from the evaporating contact material can deposit on the vacuum-side surface and thus impair the insulating ability of the insulator.
  • Shields are therefore required on the vacuum side of the insulators to prevent metal vapor condensation; Depending on the applied voltage, such shields can sometimes be structurally complex.
  • DE-AS 19 57 829 describes a low-voltage vacuum switch in which a base plate of the switching tube is designed as an insulator, which is provided on the vacuum side with a lid-shaped, conically extending shield.
  • a vacuum switch is known from DE-AS 26 12 129, in which the insulator forms the entire hollow cylinder as part of the switching chamber and the shield is formed by a concentric ring located therein.
  • the inner ring which is shorter in length than the insulator length, essentially encloses the contact area with rigid and, in contrast, movable contact bolts.
  • Other vacuum switches also have shields made up of several individual parts.
  • the aim is to make the isolator section as short as possible.
  • the switching tube is made of ceramic, for which purpose essentially annular elements can be used.
  • individual metal vapor molecules can still reflect on the iso through several reflections lator, condense there and thus form an electrically conductive coating.
  • the object of the invention is therefore to provide a simple shield in vacuum switches with short insulator distances, which has sufficient effectiveness over the entire life of the switch.
  • the problem is solved according to the invention in that the shield is arranged as a concentric hollow cylinder within the insulator section designed as a ceramic ring, the axial length of which is at least 1.5 times the ceramic ring.
  • the shielding cylinder can preferably have approximately three times the length of the insulator ring.
  • the shielding cylinder is as close as possible to the isolator and associated bellows within the vacuum switching tube arranged, but the outer circumference of the shielding cylinder should be at a sufficient distance from the inner circumference of the insulator ring.
  • a gap between 0.5 and 3 mm is preferably formed between the inside of the insulator and the outside of the shielding cylinder. This gap ensures that, even when taking into account the manufacturing tolerances, no contact can occur and that, on the other hand, the gap length is less than the expected free path lengths of the evaporation particles from the switching path between the contact pieces.
  • a vacuum switch for low-voltage systems with the shielding according to the invention can be constructed comparatively easily, so that production is inexpensive.
  • the figure shows a sectional view of a vacuum switch constructed according to the invention.
  • 1 denotes the entire vacuum switching tube. It consists in particular of a pot-like part 2 as a switching chamber, to which a first power supply bolt 3 with a contact piece 4 lying in the switching chamber 2 is fixedly attached. Opposite, a metallic bellows 6, which can be moved in the axial direction, is attached to a base plate 5 in a vacuum-tight manner Switching chamber 2 is connected via an insulator ring 8. In order to produce the vacuum-tight connection between metal and insulator parts, extension rings 7 made of such material are used, which have thermal expansion properties that they can be vacuum-tightly connected on the one hand to metal and on the other hand to ceramic. In the base plate 5, a contact pin 9 is inserted, which carries a switching piece 10 at its upper end.
  • the hollow cylinder 11 Concentric to the insulator ring 8 with the length s J there is a hollow cylinder 11 in the switching chamber, with which the ceramic is shielded from the switching contacts.
  • the hollow cylinder 11 has a tubular extension at its upper end, ie the end facing the switching contacts in the figure, so that a cap 12 is formed, which enables attachment to the switching chamber 2.
  • the cap 12 is soldered to parts 2 and 7.
  • the shielding cylinder 11 has s compared to the insulator length . for example three times the length. However, it must have at least 1.5 times the length of the insulator ring 8, the upper limit of the length being such that the distance s to the base plate 5 of the switching tube is at least as great as that to be expected during the entire service life of the contact pieces axial burnup is in mm, for example.
  • a gap d As narrow a gap d as possible, which is smaller than the free path lengths of the evaporating particles.
  • the manufacturing tolerances have to be taken into account, so that due to the expected rounding, e.g. in the case of the insulator rings, no electrically conductive connection can arise through the shielding cylinder.
  • a gap width d in the range of 0.5 to 3 mm has proven to be practical and suitable.

Landscapes

  • High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
EP84114144A 1983-12-05 1984-11-22 Interrupteur sous vide pour la basse tension, en particulier protecteur à basse tension Expired EP0149061B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE3343918 1983-12-05
DE19833343918 DE3343918A1 (de) 1983-12-05 1983-12-05 Vakuumschalter fuer den niederspannungsbereich, insbesondere niederspannungsschuetz
DE8334848U DE8334848U1 (de) 1983-12-05 1983-12-05 Vakuumschalter für den Niederspannungsbereich, insbesondere Niederspannungsschütz

Publications (2)

Publication Number Publication Date
EP0149061A1 true EP0149061A1 (fr) 1985-07-24
EP0149061B1 EP0149061B1 (fr) 1987-06-24

Family

ID=25816171

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84114144A Expired EP0149061B1 (fr) 1983-12-05 1984-11-22 Interrupteur sous vide pour la basse tension, en particulier protecteur à basse tension

Country Status (4)

Country Link
US (1) US4614850A (fr)
EP (1) EP0149061B1 (fr)
JP (1) JPS60138816A (fr)
DE (2) DE8334848U1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3803778A1 (de) * 1988-02-09 1989-08-17 Licentia Gmbh Vakuumschaltkammer
WO2000052719A1 (fr) * 1999-02-26 2000-09-08 Siemens Aktiengesellschaft Chambre d'interruption sous vide dotee d'un isolateur annulaire

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4672156A (en) * 1986-04-04 1987-06-09 Westinghouse Electric Corp. Vacuum interrupter with bellows shield
DE3623457A1 (de) * 1986-07-11 1988-01-14 Siemens Ag Vakuumschaltroehre
DE3718531A1 (de) * 1987-05-29 1988-08-11 Slamecka Ernst Vakuumschalter
NL8901748A (nl) * 1989-07-07 1991-02-01 Holec Syst & Componenten Werkwijze voor het bevestigen van een metalen scherm in het huis van een vacuuemschakelaar, scherm daarvoor alsmede van een dergelijk scherm voorziene vacuuemschakelaar.
EP0563830B1 (fr) * 1992-03-31 1995-01-11 Siemens Aktiengesellschaft Tube sous vide pour interrupteur à basse et moyenne tension, en particulier pour contacteur sous vide
DE9401655U1 (de) * 1993-06-18 1994-11-03 Siemens AG, 80333 München Vakuumschaltröhre mit ringförigem Isolator
DE4419380C1 (de) * 1994-05-30 1995-10-19 Siemens Ag Leistungsschaltermodul
DE19510850C1 (de) * 1995-03-17 1996-07-25 Siemens Ag Vakuumschaltröhre
DE19802893A1 (de) * 1998-01-21 1999-07-22 Siemens Ag Vakuumschaltkammer mit ringförmigem Isolator
DE19826766C1 (de) * 1998-06-12 2000-03-30 Siemens Ag Vakuumschaltröhre mit einem dem Isolator zugeordneten Dampfschirm
CN105742112B8 (zh) * 2013-11-27 2019-04-12 乐清市川嘉电气科技有限公司 一种具有较好缓冲作用的真空开关管
CN105762003B8 (zh) * 2013-11-27 2019-03-22 乐清市川嘉电气科技有限公司 一种提升绝缘性能的真空开关管
CN105719891B8 (zh) * 2013-11-27 2019-04-16 乐清市川嘉电气科技有限公司 提升绝缘性能的真空开关管
CN105742111B8 (zh) * 2013-11-27 2019-04-12 乐清市川嘉电气科技有限公司 提升电场分布均匀性的真空开关管
CN105742113B8 (zh) * 2013-11-27 2019-04-19 乐清市川嘉电气科技有限公司 一种真空开关管
CN105895445A (zh) * 2013-11-27 2016-08-24 赵牧青 一种具有较好缓冲效果的真空开关管
CN104979131B (zh) * 2015-07-09 2017-03-15 温州浙光电子有限公司 一种可直接与陶瓷封接的封接结构

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1565744A (fr) * 1968-03-29 1969-05-02
DE2612129A1 (de) * 1975-03-22 1976-10-07 Gemvac Kk Vakuumleistungsschalter
DE2616516A1 (de) * 1975-07-29 1977-02-10 Sprecher & Schuh Ag Vakuumschalter
GB2033665A (en) * 1978-10-26 1980-05-21 Vacuum Interrupters Ltd Vacuum interrupter or spark gap envelope
GB2035697A (en) * 1978-11-17 1980-06-18 Westinghouse Electric Corp Low voltage vacuum switches
FR2450794A1 (fr) * 1979-03-05 1980-10-03 Hazemeijer Bv Procede de fabrication d'un joint entre une piece de ceramique et une piece d'acier inoxydable, joint, interrupteur sous vide et eclateur s'y rapportant

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3087034A (en) * 1960-06-20 1963-04-23 Ling Altec Electronics Inc Vacuum switch
US3163734A (en) * 1962-01-26 1964-12-29 Gen Electric Vacuum-type circuit interrupter with improved vapor-condensing shielding
GB1079013A (en) * 1964-04-21 1967-08-09 English Electric Co Ltd Improvements in or relating to contacts and electrodes
DE1957829B2 (de) * 1969-04-18 1977-12-15 VEB Elektro-Apparate-Werke Berlin Treptow, DDR 1193 Berlin-Treptow Niederspannungs-vakuumschalter
JPS4919363A (fr) * 1972-06-16 1974-02-20
SU474058A1 (ru) * 1973-01-12 1975-06-14 Предприятие П/Я А-7147 Вакуумна дугогасительна камера
US3950628A (en) * 1974-10-10 1976-04-13 Westinghouse Electric Corporation Bellows type shorting switch
JPS5676131A (en) * 1979-11-26 1981-06-23 Meidensha Electric Mfg Co Ltd Vacuum breaker

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1565744A (fr) * 1968-03-29 1969-05-02
DE2612129A1 (de) * 1975-03-22 1976-10-07 Gemvac Kk Vakuumleistungsschalter
DE2616516A1 (de) * 1975-07-29 1977-02-10 Sprecher & Schuh Ag Vakuumschalter
GB2033665A (en) * 1978-10-26 1980-05-21 Vacuum Interrupters Ltd Vacuum interrupter or spark gap envelope
GB2035697A (en) * 1978-11-17 1980-06-18 Westinghouse Electric Corp Low voltage vacuum switches
FR2450794A1 (fr) * 1979-03-05 1980-10-03 Hazemeijer Bv Procede de fabrication d'un joint entre une piece de ceramique et une piece d'acier inoxydable, joint, interrupteur sous vide et eclateur s'y rapportant

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3803778A1 (de) * 1988-02-09 1989-08-17 Licentia Gmbh Vakuumschaltkammer
WO2000052719A1 (fr) * 1999-02-26 2000-09-08 Siemens Aktiengesellschaft Chambre d'interruption sous vide dotee d'un isolateur annulaire

Also Published As

Publication number Publication date
JPS60138816A (ja) 1985-07-23
US4614850A (en) 1986-09-30
EP0149061B1 (fr) 1987-06-24
DE8334848U1 (de) 1986-05-07
DE3343918A1 (de) 1985-06-13

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