FR1532935A - Protection system for electrical circuits - Google Patents

Protection system for electrical circuits

Info

Publication number
FR1532935A
FR1532935A FR116063A FR116063A FR1532935A FR 1532935 A FR1532935 A FR 1532935A FR 116063 A FR116063 A FR 116063A FR 116063 A FR116063 A FR 116063A FR 1532935 A FR1532935 A FR 1532935A
Authority
FR
France
Prior art keywords
protection system
electrical circuits
circuits
electrical
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
FR116063A
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.)
Harvey Hubbell Inc
Original Assignee
Harvey Hubbell Inc
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
Priority claimed from US412054A external-priority patent/US3337771A/en
Application filed by Harvey Hubbell Inc filed Critical Harvey Hubbell Inc
Priority to FR116063A priority Critical patent/FR1532935A/en
Application granted granted Critical
Publication of FR1532935A publication Critical patent/FR1532935A/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
    • H02H3/33—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 using summation current transformers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H47/00—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current
    • H01H47/02—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current for modifying the operation of the relay
    • H01H47/14—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current for modifying the operation of the relay for differential operation of the relay
    • 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
    • H02H3/16—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 fault current to earth, frame or mass
    • H02H3/167—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 fault current to earth, frame or mass combined with other earth-fault protective arrangements

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
FR116063A 1964-11-18 1967-07-28 Protection system for electrical circuits Expired FR1532935A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR116063A FR1532935A (en) 1964-11-18 1967-07-28 Protection system for electrical circuits

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US412054A US3337771A (en) 1964-11-18 1964-11-18 Electrical apparatus
FR116063A FR1532935A (en) 1964-11-18 1967-07-28 Protection system for electrical circuits

Publications (1)

Publication Number Publication Date
FR1532935A true FR1532935A (en) 1968-07-12

Family

ID=26178471

Family Applications (1)

Application Number Title Priority Date Filing Date
FR116063A Expired FR1532935A (en) 1964-11-18 1967-07-28 Protection system for electrical circuits

Country Status (1)

Country Link
FR (1) FR1532935A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2077243A1 (en) * 1970-01-21 1971-10-22 Hubbell Inc Harvey
FR2454198A2 (en) * 1979-04-09 1980-11-07 Osmond Max Enhanced sensitivity earth leakage cut=out - has toroidal transformer with differential line and neutral windings

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2077243A1 (en) * 1970-01-21 1971-10-22 Hubbell Inc Harvey
FR2454198A2 (en) * 1979-04-09 1980-11-07 Osmond Max Enhanced sensitivity earth leakage cut=out - has toroidal transformer with differential line and neutral windings

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