IT1089187B - CURRENT-SUM TRANSFORMER, ESPECIALLY FOR LEAKAGE CURRENT PROTECTION SWITCHES - Google Patents

CURRENT-SUM TRANSFORMER, ESPECIALLY FOR LEAKAGE CURRENT PROTECTION SWITCHES

Info

Publication number
IT1089187B
IT1089187B IT3107477A IT3107477A IT1089187B IT 1089187 B IT1089187 B IT 1089187B IT 3107477 A IT3107477 A IT 3107477A IT 3107477 A IT3107477 A IT 3107477A IT 1089187 B IT1089187 B IT 1089187B
Authority
IT
Italy
Prior art keywords
current
protection switches
leakage current
transformer
sum
Prior art date
Application number
IT3107477A
Other languages
Italian (it)
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
Application granted granted Critical
Publication of IT1089187B publication Critical patent/IT1089187B/en

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)
IT3107477A 1976-12-31 1977-12-22 CURRENT-SUM TRANSFORMER, ESPECIALLY FOR LEAKAGE CURRENT PROTECTION SWITCHES IT1089187B (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
IT1089187B true IT1089187B (en) 1985-06-18

Family

ID=5997170

Family Applications (1)

Application Number Title Priority Date Filing Date
IT3107477A IT1089187B (en) 1976-12-31 1977-12-22 CURRENT-SUM TRANSFORMER, ESPECIALLY FOR LEAKAGE CURRENT PROTECTION SWITCHES

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)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7810616U1 (en) * 1978-04-10 1979-09-20 Siemens Ag, 1000 Berlin Und 8000 Muenchen SUMMARY CURRENT CONVERTER, IN PARTICULAR FOR FAULT CURRENT CIRCUIT BREAKERS
DE4216248C2 (en) * 1992-05-16 2000-05-18 Abb Patent Gmbh Receptacle for a converter for a residual current circuit breaker and converter

Family Cites Families (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

Also Published As

Publication number Publication date
BE862510A (en) 1978-04-14
JPS5385338A (en) 1978-07-27
ES465617A1 (en) 1978-09-16
FR2376504A1 (en) 1978-07-28
DE2659772A1 (en) 1978-07-06
DK572477A (en) 1978-07-01
NL7713303A (en) 1978-07-04

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