FR2148031B1 - - Google Patents

Info

Publication number
FR2148031B1
FR2148031B1 FR7226857A FR7226857A FR2148031B1 FR 2148031 B1 FR2148031 B1 FR 2148031B1 FR 7226857 A FR7226857 A FR 7226857A FR 7226857 A FR7226857 A FR 7226857A FR 2148031 B1 FR2148031 B1 FR 2148031B1
Authority
FR
France
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
FR7226857A
Other languages
French (fr)
Other versions
FR2148031A1 (en
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.)
Magrini Fabbriche Riunite Magrini Scarpa e Magnano MSM SpA
Original Assignee
Magrini Fabbriche Riunite Magrini Scarpa e Magnano MSM SpA
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 Magrini Fabbriche Riunite Magrini Scarpa e Magnano MSM SpA filed Critical Magrini Fabbriche Riunite Magrini Scarpa e Magnano MSM SpA
Publication of FR2148031A1 publication Critical patent/FR2148031A1/fr
Application granted granted Critical
Publication of FR2148031B1 publication Critical patent/FR2148031B1/fr
Expired 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
    • H01H33/70—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
    • H01H33/7023—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid characterised by flow directing elements associated with contacts characterised by an insulating tubular gas flow enhancing nozzle
    • H01H33/703—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid characterised by flow directing elements associated with contacts characterised by an insulating tubular gas flow enhancing nozzle having special gas flow directing elements, e.g. grooves, extensions
FR7226857A 1971-07-30 1972-07-26 Expired FR2148031B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT2698771 1971-07-30

Publications (2)

Publication Number Publication Date
FR2148031A1 FR2148031A1 (en) 1973-03-11
FR2148031B1 true FR2148031B1 (en) 1977-06-17

Family

ID=11220694

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7226857A Expired FR2148031B1 (en) 1971-07-30 1972-07-26

Country Status (11)

Country Link
US (1) US3816684A (en)
BE (1) BE786948A (en)
BR (1) BR7205080D0 (en)
CA (1) CA973598A (en)
CH (1) CH546476A (en)
DE (1) DE2236566A1 (en)
ES (1) ES405375A1 (en)
FR (1) FR2148031B1 (en)
GB (1) GB1400523A (en)
NO (1) NO134274C (en)
SE (1) SE372652B (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH648689A5 (en) * 1979-08-15 1985-03-29 Bbc Brown Boveri & Cie CIRCUIT BREAKER.
CA1243342A (en) * 1983-08-24 1988-10-18 Fumihiro Endo Gas-insulated circuit breaker
JPS61188825A (en) * 1985-02-15 1986-08-22 株式会社日立製作所 Buffer type gas breaker
JP2771305B2 (en) * 1990-03-13 1998-07-02 株式会社日立製作所 Gas circuit breaker
DE10156535C1 (en) * 2001-11-14 2003-06-26 Siemens Ag breakers
WO2010112058A1 (en) * 2009-03-30 2010-10-07 Abb Research Ltd Circuit breaker
CN106841573A (en) * 2017-04-12 2017-06-13 中铁西北科学研究院有限公司 A kind of debris flows simulation experimental rig and test method

Also Published As

Publication number Publication date
SE372652B (en) 1974-12-23
NO134274C (en) 1976-09-08
ES405375A1 (en) 1975-07-16
US3816684A (en) 1974-06-11
CA973598A (en) 1975-08-26
DE2236566A1 (en) 1973-02-08
GB1400523A (en) 1975-07-16
BE786948A (en) 1973-01-29
FR2148031A1 (en) 1973-03-11
CH546476A (en) 1974-02-28
BR7205080D0 (en) 1973-06-28
NO134274B (en) 1976-05-31

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Legal Events

Date Code Title Description
ST Notification of lapse