FR2400247B1 - - Google Patents

Info

Publication number
FR2400247B1
FR2400247B1 FR7724583A FR7724583A FR2400247B1 FR 2400247 B1 FR2400247 B1 FR 2400247B1 FR 7724583 A FR7724583 A FR 7724583A FR 7724583 A FR7724583 A FR 7724583A FR 2400247 B1 FR2400247 B1 FR 2400247B1
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
FR7724583A
Other versions
FR2400247A1 (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.)
Societe dAppareillage Electrique SAPAREL SA
Original Assignee
Societe dAppareillage Electrique SAPAREL 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 Societe dAppareillage Electrique SAPAREL SA filed Critical Societe dAppareillage Electrique SAPAREL SA
Priority to FR7724583A priority Critical patent/FR2400247A1/fr
Publication of FR2400247A1 publication Critical patent/FR2400247A1/fr
Application granted granted Critical
Publication of FR2400247B1 publication Critical patent/FR2400247B1/fr
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F38/00—Adaptations of transformers or inductances for specific applications or functions
    • H01F38/20—Instruments transformers
    • H01F38/22—Instruments transformers for single phase ac
    • H01F38/28—Current transformers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/42—Circuits specially adapted for the purpose of modifying, or compensating for, electric characteristics of transformers, reactors, or choke coils
    • H01F27/422—Circuits specially adapted for the purpose of modifying, or compensating for, electric characteristics of transformers, reactors, or choke coils for instrument transformers
    • H01F27/427—Circuits specially adapted for the purpose of modifying, or compensating for, electric characteristics of transformers, reactors, or choke coils for instrument transformers for current transformers
    • 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
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F38/00—Adaptations of transformers or inductances for specific applications or functions
    • H01F38/20—Instruments transformers
    • H01F38/22—Instruments transformers for single phase ac
    • H01F38/28—Current transformers
    • H01F38/30—Constructions
    • H01F2038/305—Constructions with toroidal magnetic core
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H83/00—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current
    • H01H83/14—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by imbalance of two or more currents or voltages, e.g. for differential protection
    • H01H83/144—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by imbalance of two or more currents or voltages, e.g. for differential protection with differential transformer

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
FR7724583A 1977-08-10 1977-08-10 Dispositif a tore sensible a un courant electrique Granted FR2400247A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7724583A FR2400247A1 (fr) 1977-08-10 1977-08-10 Dispositif a tore sensible a un courant electrique

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7724583A FR2400247A1 (fr) 1977-08-10 1977-08-10 Dispositif a tore sensible a un courant electrique

Publications (2)

Publication Number Publication Date
FR2400247A1 FR2400247A1 (fr) 1979-03-09
FR2400247B1 true FR2400247B1 (fr) 1980-04-25

Family

ID=9194427

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7724583A Granted FR2400247A1 (fr) 1977-08-10 1977-08-10 Dispositif a tore sensible a un courant electrique

Country Status (1)

Country Link
FR (1) FR2400247A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1294329C (fr) * 1987-08-07 1992-01-14 Akira Saigo Methode et appareil permettant d'evaluer les conditions d'isolation

Also Published As

Publication number Publication date
FR2400247A1 (fr) 1979-03-09

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Legal Events

Date Code Title Description
ST Notification of lapse