AT311467B - Summation current transformer, especially for a residual current circuit breaker - Google Patents

Summation current transformer, especially for a residual current circuit breaker

Info

Publication number
AT311467B
AT311467B AT566072A AT566072A AT311467B AT 311467 B AT311467 B AT 311467B AT 566072 A AT566072 A AT 566072A AT 566072 A AT566072 A AT 566072A AT 311467 B AT311467 B AT 311467B
Authority
AT
Austria
Prior art keywords
circuit breaker
summation
current transformer
current circuit
residual
Prior art date
Application number
AT566072A
Other languages
German (de)
Original Assignee
Westinghouse Electric Corp
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 Westinghouse Electric Corp filed Critical Westinghouse Electric Corp
Application granted granted Critical
Publication of AT311467B publication Critical patent/AT311467B/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
    • H01F38/22—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
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/28—Coils; Windings; Conductive connections
    • H01F27/2823—Wires
    • H01F2027/2833—Wires using coaxial cable as wire
    • 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 unbalance 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 unbalance 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 unbalance 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 unbalance 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 unbalance 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)
AT566072A 1971-06-30 1972-06-30 Summation current transformer, especially for a residual current circuit breaker AT311467B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US15833671A 1971-06-30 1971-06-30

Publications (1)

Publication Number Publication Date
AT311467B true AT311467B (en) 1973-11-26

Family

ID=22567656

Family Applications (1)

Application Number Title Priority Date Filing Date
AT566072A AT311467B (en) 1971-06-30 1972-06-30 Summation current transformer, especially for a residual current circuit breaker

Country Status (5)

Country Link
US (1) US3725741A (en)
AT (1) AT311467B (en)
CA (1) CA949659A (en)
CH (1) CH535482A (en)
DE (1) DE2231431A1 (en)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4034266A (en) * 1975-08-29 1977-07-05 Westinghouse Electric Corporation Electric wall receptacle with ground fault protection
FR2428308A1 (en) * 1978-06-08 1980-01-04 Mayer Ferdy DIFFERENTIAL TRANSFORMER OF ELECTRICAL PROTECTION RELAYS
US4591942A (en) * 1984-12-07 1986-05-27 General Electric Company Current sensing transformer assembly
CH667557A5 (en) * 1985-03-14 1988-10-14 Sprecher Energie Ag HIGH VOLTAGE SWITCHGEAR.
FR2581264B1 (en) * 1985-04-26 1993-04-30 Etude Realisa Disjoncteurs SUMMARY TRANSFORMER AND MANUFACTURING PROCESS
EP0377691A4 (en) * 1988-04-28 1990-10-10 Fmtt, Inc Matrix transformer having high dielectric isolation
DE4410076A1 (en) * 1994-03-23 1995-09-28 Valentron Ag Residual current circuit breaker
KR100206373B1 (en) * 1994-12-30 1999-07-01 이형도 Synchronous cable coupling structure of flyback transformer
US5684683A (en) * 1996-02-09 1997-11-04 Wisconsin Alumni Research Foundation DC-to-DC power conversion with high current output
US6087916A (en) * 1996-07-30 2000-07-11 Soft Switching Technologies, Inc. Cooling of coaxial winding transformers in high power applications
US6760206B2 (en) 2001-03-16 2004-07-06 Cooper Industries, Inc. Current sensor supporting structure
GB2473014B (en) * 2009-08-27 2014-07-16 Sean Christopher Ganley Single and Multi Phase Current Sensor Combined with a Current Transformer
US8269592B1 (en) * 2010-05-05 2012-09-18 Lockheed Martin Corporation Pulse transformer
CN106710857B (en) * 2015-07-31 2018-12-11 西门子公司 Current transformer with multiturn conducting rod
US10622800B2 (en) * 2017-08-09 2020-04-14 Schneider Electric USA, Inc. Integrated arc fault and ground fault current sensing package
US10852326B2 (en) * 2017-08-09 2020-12-01 Schneider Electric USA, Inc. Differential current sensing bussing method

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1866345A (en) * 1929-12-19 1932-07-05 Westinghouse Electric & Mfg Co Current transformer with primary parallel resistance and flux leakage path
US2531820A (en) * 1943-02-03 1950-11-28 Rca Corp Voltage transformer
US2679025A (en) * 1952-05-28 1954-05-18 Rca Corp Magnetic testing system
US2849694A (en) * 1954-07-12 1958-08-26 Gen Electric Current transformer
GB833364A (en) * 1955-07-18 1960-04-21 Gen Electric Improvements in and relating to high voltage current transformers
NL229257A (en) * 1957-07-24
FR1288166A (en) * 1961-02-08 1962-03-24 Comp Generale Electricite Improvements to high voltage instrument transformers
US3154757A (en) * 1961-08-02 1964-10-27 F R Hannon & Sons Inc Transformer with secondary winding suspended within primary core
US3614694A (en) * 1969-09-17 1971-10-19 Atomic Energy Commission Coaxial cable high-voltage pulse isolation transformer

Also Published As

Publication number Publication date
DE2231431A1 (en) 1973-01-11
US3725741A (en) 1973-04-03
CA949659A (en) 1974-06-18
CH535482A (en) 1973-03-31

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Legal Events

Date Code Title Description
ELJ Ceased due to non-payment of the annual fee