ES389199A1 - Protective arrangement against earth leakage currents for a multi- phase electric supply line - Google Patents

Protective arrangement against earth leakage currents for a multi- phase electric supply line

Info

Publication number
ES389199A1
ES389199A1 ES389199A ES389199A ES389199A1 ES 389199 A1 ES389199 A1 ES 389199A1 ES 389199 A ES389199 A ES 389199A ES 389199 A ES389199 A ES 389199A ES 389199 A1 ES389199 A1 ES 389199A1
Authority
ES
Spain
Prior art keywords
supply line
electric supply
earth leakage
phase electric
leakage currents
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
ES389199A
Other languages
Spanish (es)
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
Publication of ES389199A1 publication Critical patent/ES389199A1/en
Expired 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
    • H01F38/32—Circuit arrangements
    • 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
    • H02H3/34—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
    • H02H3/347—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 using summation current transformers

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Protection Of Transformers (AREA)
  • Transformers For Measuring Instruments (AREA)

Abstract

Improvements introduced in homopolar current transformers for highly sensitive differential relays commanded by a cutting device characterized by the fact that a demagnetization circuit is connected to the terminals of its secondary, automatically, under the effect of the relay taking off differential to which it feeds. (Machine-translation by Google Translate, not legally binding)
ES389199A 1970-03-16 1971-03-13 Protective arrangement against earth leakage currents for a multi- phase electric supply line Expired ES389199A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7009286A FR2081183A1 (en) 1970-03-16 1970-03-16

Publications (1)

Publication Number Publication Date
ES389199A1 true ES389199A1 (en) 1974-05-01

Family

ID=9052292

Family Applications (1)

Application Number Title Priority Date Filing Date
ES389199A Expired ES389199A1 (en) 1970-03-16 1971-03-13 Protective arrangement against earth leakage currents for a multi- phase electric supply line

Country Status (6)

Country Link
BE (1) BE763766A (en)
DE (1) DE2112326A1 (en)
ES (1) ES389199A1 (en)
FR (1) FR2081183A1 (en)
GB (1) GB1309972A (en)
NL (1) NL7103097A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB0226111D0 (en) * 2002-11-08 2002-12-18 Delta Electrical Ltd Residual current devices
WO2019220022A1 (en) * 2018-05-16 2019-11-21 Hager-Electro Sas Electrical differential switching device

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR946815A (en) * 1947-05-14 1949-06-15 Device for demagnetizing iron or steel parts
FR1235318A (en) * 1957-08-10 1960-07-08 Remanent contactor or circuit breaker fitted with a differential relay

Also Published As

Publication number Publication date
FR2081183A1 (en) 1971-12-03
BE763766A (en) 1971-09-06
GB1309972A (en) 1973-03-14
NL7103097A (en) 1971-09-20
DE2112326A1 (en) 1971-09-30

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