FR699766A - Improvements to protection systems for electrical circuits - Google Patents

Improvements to protection systems for electrical circuits

Info

Publication number
FR699766A
FR699766A FR699766DA FR699766A FR 699766 A FR699766 A FR 699766A FR 699766D A FR699766D A FR 699766DA FR 699766 A FR699766 A FR 699766A
Authority
FR
France
Prior art keywords
electrical circuits
protection systems
systems
protection
circuits
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.)
Expired
Application number
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.)
Compagnie Francaise Thomson Houston SA
Original Assignee
Compagnie Francaise Thomson Houston SA
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 Compagnie Francaise Thomson Houston SA filed Critical Compagnie Francaise Thomson Houston SA
Application granted granted Critical
Publication of FR699766A publication Critical patent/FR699766A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • H02H7/04—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 transformers
    • H02H7/045—Differential protection of transformers
FR699766D 1929-08-21 1930-07-31 Improvements to protection systems for electrical circuits Expired FR699766A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US699766XA 1929-08-21 1929-08-21
US355940XA 1929-08-21 1929-08-21
US387523A US1787277A (en) 1929-08-21 1929-08-21 Protective arrangement

Publications (1)

Publication Number Publication Date
FR699766A true FR699766A (en) 1931-02-19

Family

ID=50572362

Family Applications (1)

Application Number Title Priority Date Filing Date
FR699766D Expired FR699766A (en) 1929-08-21 1930-07-31 Improvements to protection systems for electrical circuits

Country Status (3)

Country Link
US (1) US1787277A (en)
FR (1) FR699766A (en)
GB (1) GB355940A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE744096C (en) * 1939-12-20 1944-01-08 Aeg Device to prevent false triggering of protective devices when inductive system parts are switched on
DE744451C (en) * 1940-06-06 1944-01-15 Aeg Differential protection device

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2422288A (en) * 1944-06-02 1947-06-17 Western Electric Co Apparatus for testing electrical insulation
US2422309A (en) * 1945-03-10 1947-06-17 Automatic Elect Lab Distortion correcting impulse repeater
US2574403A (en) * 1948-04-19 1951-11-06 Gen Electric Differential protective system
US2683242A (en) * 1949-02-16 1954-07-06 Jefferson Electric Co Control device and lighting system
US2528240A (en) * 1949-12-10 1950-10-31 Gen Electric Transformer differential relay
US2896127A (en) * 1956-06-26 1959-07-21 Gen Electric Temperature responsive protective relay

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE744096C (en) * 1939-12-20 1944-01-08 Aeg Device to prevent false triggering of protective devices when inductive system parts are switched on
DE744451C (en) * 1940-06-06 1944-01-15 Aeg Differential protection device

Also Published As

Publication number Publication date
US1787277A (en) 1930-12-30
GB355940A (en) 1931-09-03

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