FR2048650A5 - - Google Patents

Info

Publication number
FR2048650A5
FR2048650A5 FR7018573A FR7018573A FR2048650A5 FR 2048650 A5 FR2048650 A5 FR 2048650A5 FR 7018573 A FR7018573 A FR 7018573A FR 7018573 A FR7018573 A FR 7018573A FR 2048650 A5 FR2048650 A5 FR 2048650A5
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
FR7018573A
Other languages
French (fr)
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.)
Toyo Denki Seizo KK
Toyo Electric Manufacturing Ltd
Original Assignee
Toyo Denki Seizo KK
Toyo Electric Manufacturing 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 Toyo Denki Seizo KK, Toyo Electric Manufacturing Ltd filed Critical Toyo Denki Seizo KK
Application granted granted Critical
Publication of FR2048650A5 publication Critical patent/FR2048650A5/fr
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
    • H02H9/04—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage
    • H02H9/06—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage using spark-gap arresters
    • 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
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/22—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for distribution gear, e.g. bus-bar systems; for switching devices
    • H02H7/222—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for distribution gear, e.g. bus-bar systems; for switching devices for switches
    • 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
    • H01H33/668—Means for obtaining or monitoring the vacuum
FR7018573A 1969-05-22 1970-05-21 Expired FR2048650A5 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP44039453A JPS4947661B1 (de) 1969-05-22 1969-05-22

Publications (1)

Publication Number Publication Date
FR2048650A5 true FR2048650A5 (de) 1971-03-19

Family

ID=12553443

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7018573A Expired FR2048650A5 (de) 1969-05-22 1970-05-21

Country Status (5)

Country Link
US (1) US3641394A (de)
JP (1) JPS4947661B1 (de)
DE (1) DE2025120C3 (de)
FR (1) FR2048650A5 (de)
GB (1) GB1285283A (de)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3693053A (en) * 1971-10-29 1972-09-19 Gen Electric Metal oxide varistor polyphase transient voltage suppression
US3911322A (en) * 1974-03-05 1975-10-07 Westinghouse Electric Corp Method and circuit arrangement for an improved low cost lightning arrester
FR2480441A1 (fr) * 1980-04-15 1981-10-16 Enertec Procede et dispositifs d'identification de phases en defaut dans un reseau de distribution electrique
US4652867A (en) * 1984-09-25 1987-03-24 Masot Oscar V Circuit breaker indicator
GB8820953D0 (en) * 1988-09-07 1988-10-05 Furse W J & Co Ltd Apparatus suitable for use in protecting electrical installations from transients
FI116176B (fi) * 2004-05-18 2005-09-30 Abb Oy Maadoitus- ja ylijännitesuojausjärjestely
CN107768185B (zh) * 2016-08-16 2020-01-10 中国石油化工股份有限公司 一种真空室的真空度监测方法

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US897211A (en) * 1907-03-15 1908-08-25 Gen Electric Protective device for electrical systems.
US981742A (en) * 1907-06-01 1911-01-17 Gen Electric Lightning-arrester.
US2520956A (en) * 1947-03-14 1950-09-05 James P Parker Breakdown indicator for insulated aircraft antennas
NL280036A (de) * 1961-07-03

Also Published As

Publication number Publication date
DE2025120A1 (de) 1970-12-23
US3641394A (en) 1972-02-08
JPS4947661B1 (de) 1974-12-17
DE2025120B2 (de) 1972-07-06
GB1285283A (en) 1972-08-16
DE2025120C3 (de) 1974-06-27

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Legal Events

Date Code Title Description
ST Notification of lapse