FR2376504A1 - Current transformer in fault detecting circuit - has annular cylindrical core with looped insulated conductors - Google Patents

Current transformer in fault detecting circuit - has annular cylindrical core with looped insulated conductors

Info

Publication number
FR2376504A1
FR2376504A1 FR7739693A FR7739693A FR2376504A1 FR 2376504 A1 FR2376504 A1 FR 2376504A1 FR 7739693 A FR7739693 A FR 7739693A FR 7739693 A FR7739693 A FR 7739693A FR 2376504 A1 FR2376504 A1 FR 2376504A1
Authority
FR
France
Prior art keywords
looped
current transformer
core
cylindrical core
detecting circuit
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.)
Withdrawn
Application number
FR7739693A
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Publication of FR2376504A1 publication Critical patent/FR2376504A1/en
Withdrawn legal-status Critical Current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
    • H01F38/38—Instruments transformers for polyphase ac
    • 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
    • H01F27/28—Coils; Windings; Conductive connections
    • H01F27/2895—Windings disposed upon ring cores
    • 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
    • H01F27/28—Coils; Windings; Conductive connections
    • H01F27/32—Insulating of coils, windings, or parts thereof
    • H01F27/323—Insulation between winding turns, between winding layers
    • 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
    • H01H2083/148—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 with primary windings formed of rigid copper conductors
    • 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)
  • Transformers For Measuring Instruments (AREA)
  • Coils Of Transformers For General Uses (AREA)
  • Coils Or Transformers For Communication (AREA)

Abstract

A total current transformer like those used as circuit breaker elements protecting against current default conditions, has a cylindrical core (9). Core (9) is provided with several beam type conductors (1) which are looped through the central part of the core. Each of the conductors (1) is individually insulated by a coating of varnish. Input and output conductors (7) ending in termini (2) to (5) supply the core windings (6). The whole is set in a protective housing.
FR7739693A 1976-12-31 1977-12-29 Current transformer in fault detecting circuit - has annular cylindrical core with looped insulated conductors Withdrawn FR2376504A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19762659772 DE2659772A1 (en) 1976-12-31 1976-12-31 SUMMARY CURRENT CONVERTER, IN PARTICULAR FOR FAULT CURRENT CIRCUIT BREAKERS

Publications (1)

Publication Number Publication Date
FR2376504A1 true FR2376504A1 (en) 1978-07-28

Family

ID=5997170

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7739693A Withdrawn FR2376504A1 (en) 1976-12-31 1977-12-29 Current transformer in fault detecting circuit - has annular cylindrical core with looped insulated conductors

Country Status (8)

Country Link
JP (1) JPS5385338A (en)
BE (1) BE862510A (en)
DE (1) DE2659772A1 (en)
DK (1) DK572477A (en)
ES (1) ES465617A1 (en)
FR (1) FR2376504A1 (en)
IT (1) IT1089187B (en)
NL (1) NL7713303A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2423043A1 (en) * 1978-04-10 1979-11-09 Siemens Ag DIFFERENTIAL TRANSFORMER, ESPECIALLY FOR FAULT CURRENT PROTECTION CIRCUIT BREAKERS
EP0570790A2 (en) * 1992-05-16 1993-11-24 ABBPATENT GmbH Box for a transformer for a ground fault current interrupter and transformer

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2907968A (en) * 1951-04-13 1959-10-06 Siemens Ag Edgewise wound reactor coils and method of making the same
FR1213828A (en) * 1957-11-01 1960-04-04 High Voltage Engineering Corp Improvements to high voltage generators
FR1337384A (en) * 1962-07-30 1963-09-13 Improvements to multi-pole differential winding circuit breakers
US3210701A (en) * 1962-05-14 1965-10-05 Automatic Elect Lab Wound toroidal core shell
DE2503691A1 (en) * 1975-01-30 1976-08-05 Bbc Brown Boveri & Cie Transformer with toroidal ferromagnetic core - has separate windings of strip wire conductor in insulating foils

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2907968A (en) * 1951-04-13 1959-10-06 Siemens Ag Edgewise wound reactor coils and method of making the same
FR1213828A (en) * 1957-11-01 1960-04-04 High Voltage Engineering Corp Improvements to high voltage generators
US3210701A (en) * 1962-05-14 1965-10-05 Automatic Elect Lab Wound toroidal core shell
FR1337384A (en) * 1962-07-30 1963-09-13 Improvements to multi-pole differential winding circuit breakers
DE2503691A1 (en) * 1975-01-30 1976-08-05 Bbc Brown Boveri & Cie Transformer with toroidal ferromagnetic core - has separate windings of strip wire conductor in insulating foils

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2423043A1 (en) * 1978-04-10 1979-11-09 Siemens Ag DIFFERENTIAL TRANSFORMER, ESPECIALLY FOR FAULT CURRENT PROTECTION CIRCUIT BREAKERS
EP0570790A2 (en) * 1992-05-16 1993-11-24 ABBPATENT GmbH Box for a transformer for a ground fault current interrupter and transformer
EP0570790A3 (en) * 1992-05-16 1993-12-15 Abb Patent Gmbh Box for a transformer for a ground fault current interrupter and transformer

Also Published As

Publication number Publication date
DK572477A (en) 1978-07-01
NL7713303A (en) 1978-07-04
ES465617A1 (en) 1978-09-16
DE2659772A1 (en) 1978-07-06
JPS5385338A (en) 1978-07-27
IT1089187B (en) 1985-06-18
BE862510A (en) 1978-04-14

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Legal Events

Date Code Title Description
ST Notification of lapse