EP0175349A3 - Vacuum circuit breaker - Google Patents

Vacuum circuit breaker

Info

Publication number
EP0175349A3
EP0175349A3 EP85111755A EP85111755A EP0175349A3 EP 0175349 A3 EP0175349 A3 EP 0175349A3 EP 85111755 A EP85111755 A EP 85111755A EP 85111755 A EP85111755 A EP 85111755A EP 0175349 A3 EP0175349 A3 EP 0175349A3
Authority
EP
European Patent Office
Prior art keywords
circuit breaker
vacuum circuit
melting point
main component
metal
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Withdrawn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
EP85111755A
Other languages
German (de)
French (fr)
Other versions
EP0175349A2 (en
Inventor
Yukio Kurosawa
Kiyoji Iwashita
Morihisa Matumoto
Ryuji Watanabe
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.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
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 Hitachi Ltd filed Critical Hitachi Ltd
Publication of EP0175349A2 publication Critical patent/EP0175349A2/en
Publication of EP0175349A3 publication Critical patent/EP0175349A3/en
Withdrawn legal-status Critical Current

Links

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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/02—Contacts characterised by the material thereof
    • H01H1/0203—Contacts characterised by the material thereof specially adapted for vacuum switches

Landscapes

  • High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
  • Physical Vapour Deposition (AREA)

Abstract

A vacuum circuit breaker has a vaccum vessel (2) in which are disposed a pair of opposing electrodes (8, 9) so as to be moved into and out of contact with each other, each of the electrodes (8,9) being made of a material consisting essentially of a main component such as Cu, Ag or the like and a low-melting point metal such as Bi, Pb, Te, Se or the like. A film (13) is formed on the surface of each electrode (8, 9) by, for example, evaporating a metal having a melting point equal to or higher than that of the main component of the electrode material.
EP85111755A 1984-09-19 1985-09-17 Vacuum circuit breaker Withdrawn EP0175349A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP59194733A JPS6174222A (en) 1984-09-19 1984-09-19 Vacuum breaker
JP194733/84 1984-09-19

Publications (2)

Publication Number Publication Date
EP0175349A2 EP0175349A2 (en) 1986-03-26
EP0175349A3 true EP0175349A3 (en) 1988-04-06

Family

ID=16329326

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85111755A Withdrawn EP0175349A3 (en) 1984-09-19 1985-09-17 Vacuum circuit breaker

Country Status (3)

Country Link
EP (1) EP0175349A3 (en)
JP (1) JPS6174222A (en)
KR (1) KR860002845A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0234246A1 (en) * 1986-01-30 1987-09-02 Siemens Aktiengesellschaft Switch contact members for vacuum switch apparatuses, and method for their production
JPH01298617A (en) * 1988-05-27 1989-12-01 Toshiba Corp Contact for vacuum valve and manufacture
DE3842919C2 (en) * 1988-12-21 1995-04-27 Calor Emag Elektrizitaets Ag Switch for a vacuum switch
JP6246096B2 (en) * 2014-08-08 2017-12-13 一般財団法人電力中央研究所 Diagnosis method of gas insulated switchgear

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1347932A (en) * 1962-12-04 1964-01-04 Heraeus Gmbh W C Composite metal
FR1437162A (en) * 1964-11-19 1966-04-29 Improvements to electrical vacuum switches
EP0042152A1 (en) * 1980-06-18 1981-12-23 Hitachi, Ltd. Vacuum circuit breaker
US4420346A (en) * 1980-11-28 1983-12-13 Belkin German S Method of preparing contacts and electrodes of electric vacuum apparatuses

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1347932A (en) * 1962-12-04 1964-01-04 Heraeus Gmbh W C Composite metal
FR1437162A (en) * 1964-11-19 1966-04-29 Improvements to electrical vacuum switches
EP0042152A1 (en) * 1980-06-18 1981-12-23 Hitachi, Ltd. Vacuum circuit breaker
US4420346A (en) * 1980-11-28 1983-12-13 Belkin German S Method of preparing contacts and electrodes of electric vacuum apparatuses

Also Published As

Publication number Publication date
JPS6174222A (en) 1986-04-16
EP0175349A2 (en) 1986-03-26
KR860002845A (en) 1986-04-30

Similar Documents

Publication Publication Date Title
CA2072224A1 (en) Electrically conductive polymer composition, method of making same and device incorporating same
JPS5538785A (en) Voltage tuning fork
ES8308653A1 (en) Electrical contact.
EP0175349A3 (en) Vacuum circuit breaker
DE3565907D1 (en) Vacuum contactor with contact pieces of cucr and process for the production of such contact pieces
JPS5513553A (en) Crystal vibrator
JPS5346418A (en) Low melting point alloy
EP0118844A3 (en) Vacuum switch and method of manufacturing the same
ES2023345A6 (en) Multilayer transducer with bonded contacts and method for implementation of bonding
EP0332337A3 (en) Electrode and construction thereof
GB901026A (en) Improvements in or relating to electrical contacts
JPS57149093A (en) Silver solder material
EP0315977A3 (en) Superconductor material comprising a three-component metallic oxide
JPS5512660A (en) Enclosed battery
GB1520724A (en) Vacuum-type circuit interrupter
JPS5538855A (en) Antimicrobial material
JPS56123338A (en) Electrical contact material
JPS5644731A (en) Electrical contact material
JPS5465124A (en) Electrical contact point material
JPS5494431A (en) Electric contact material
JPS6411380A (en) Manufacture of josephson element
JPS5690940A (en) Composite electrical contact material
JPS56155018A (en) Solid compound and solid electrolyte
JPS5641342A (en) Electrode material for sputtering ion pump
JPS5583843A (en) Humidity sensor

Legal Events

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

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): DE GB

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): DE GB

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

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19881007

RIN1 Information on inventor provided before grant (corrected)

Inventor name: MATUMOTO, MORIHISA

Inventor name: KUROSAWA, YUKIO

Inventor name: WATANABE, RYUJI

Inventor name: IWASHITA, KIYOJI