IT1112047B - Trasformatore di corrente-somma,specialmente per interrutori di protezione da correnti di dispersione - Google Patents

Trasformatore di corrente-somma,specialmente per interrutori di protezione da correnti di dispersione

Info

Publication number
IT1112047B
IT1112047B IT21530/79A IT2153079A IT1112047B IT 1112047 B IT1112047 B IT 1112047B IT 21530/79 A IT21530/79 A IT 21530/79A IT 2153079 A IT2153079 A IT 2153079A IT 1112047 B IT1112047 B IT 1112047B
Authority
IT
Italy
Prior art keywords
current
protection switches
transformer
sum
leak
Prior art date
Application number
IT21530/79A
Other languages
English (en)
Other versions
IT7921530A0 (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
Publication of IT7921530A0 publication Critical patent/IT7921530A0/it
Application granted granted Critical
Publication of IT1112047B publication Critical patent/IT1112047B/it

Links

Classifications

    • 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
    • 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
    • H01F30/00—Fixed transformers not covered by group H01F19/00
    • H01F30/06—Fixed transformers not covered by group H01F19/00 characterised by the structure
    • H01F30/16—Toroidal 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
    • 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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Transformers For Measuring Instruments (AREA)
IT21530/79A 1978-04-10 1979-04-03 Trasformatore di corrente-somma,specialmente per interrutori di protezione da correnti di dispersione IT1112047B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19787810616U DE7810616U1 (de) 1978-04-10 1978-04-10 Summenstromwandler, insbesondere fuer fehlerstromschutzschalter

Publications (2)

Publication Number Publication Date
IT7921530A0 IT7921530A0 (it) 1979-04-03
IT1112047B true IT1112047B (it) 1986-01-13

Family

ID=6690326

Family Applications (1)

Application Number Title Priority Date Filing Date
IT21530/79A IT1112047B (it) 1978-04-10 1979-04-03 Trasformatore di corrente-somma,specialmente per interrutori di protezione da correnti di dispersione

Country Status (4)

Country Link
DE (1) DE7810616U1 (it)
FR (1) FR2423043A1 (it)
GB (1) GB2018522B (it)
IT (1) IT1112047B (it)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1081561B (de) * 1959-01-08 1960-05-12 Purrmann & Herr G M B H Strom- bzw. Spannungswandler mit zweiteiliger Primaeranschlussschiene
GB1166827A (en) * 1965-12-21 1969-10-08 English Electric Co Ltd Inductive Devices having Toroidal Magnetic Cores
DE1563332A1 (de) * 1966-04-22 1970-01-29 Siemens Ag Summenstromwandler fuer Fehlerstromschutzschalter
DE2503691A1 (de) * 1975-01-30 1976-08-05 Bbc Brown Boveri & Cie Ringkernwandler
DE2659772A1 (de) * 1976-12-31 1978-07-06 Siemens Ag Summenstromwandler, insbesondere fuer fehlerstromschutzschalter
DE2717417C2 (de) * 1977-04-20 1986-01-30 Condor-Werk Gebr. Frede KG Elektro- und Maschinenfabrik, 4722 Ennigerloh Verfahren und Vorrichtung zur Herstellung der Primärbewicklung von Summenstromwandlern in mehrphasiger Ausführung

Also Published As

Publication number Publication date
DE7810616U1 (de) 1979-09-20
GB2018522B (en) 1982-10-06
IT7921530A0 (it) 1979-04-03
GB2018522A (en) 1979-10-17
FR2423043A1 (fr) 1979-11-09
FR2423043B1 (it) 1982-02-19

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