FR55663E - Improvements to selective protection devices - Google Patents

Improvements to selective protection devices

Info

Publication number
FR55663E
FR55663E FR55663DA FR55663E FR 55663 E FR55663 E FR 55663E FR 55663D A FR55663D A FR 55663DA FR 55663 E FR55663 E FR 55663E
Authority
FR
France
Prior art keywords
protection devices
selective protection
selective
devices
protection
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 Electro Mecanique SA
Original Assignee
Compagnie Electro Mecanique 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 Electro Mecanique SA filed Critical Compagnie Electro Mecanique SA
Application granted granted Critical
Publication of FR55663E publication Critical patent/FR55663E/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/26—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents
    • H02H3/32—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors
    • H02H3/34—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors of a three-phase system
    • H02H3/353—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors of a three-phase system involving comparison of phase voltages
    • 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
    • H02H7/26—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured
FR55663D 1943-06-30 1943-06-30 Improvements to selective protection devices Expired FR55663E (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR55663T 1943-06-30

Publications (1)

Publication Number Publication Date
FR55663E true FR55663E (en) 1952-09-03

Family

ID=8689967

Family Applications (2)

Application Number Title Priority Date Filing Date
FR972827D Expired FR972827A (en) 1943-06-30 1941-05-09 Improvements to selective protection devices
FR55663D Expired FR55663E (en) 1943-06-30 1943-06-30 Improvements to selective protection devices

Family Applications Before (1)

Application Number Title Priority Date Filing Date
FR972827D Expired FR972827A (en) 1943-06-30 1941-05-09 Improvements to selective protection devices

Country Status (2)

Country Link
FR (2) FR972827A (en)
GB (1) GB610837A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2313791A1 (en) * 1975-06-02 1976-12-31 Westinghouse Electric Corp PHASE IMBALANCE DETECTOR CIRCUIT

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2313791A1 (en) * 1975-06-02 1976-12-31 Westinghouse Electric Corp PHASE IMBALANCE DETECTOR CIRCUIT

Also Published As

Publication number Publication date
GB610837A (en) 1948-10-21
FR972827A (en) 1951-02-05

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