TW276345B - - Google Patents

Info

Publication number
TW276345B
TW276345B TW084107614A TW84107614A TW276345B TW 276345 B TW276345 B TW 276345B TW 084107614 A TW084107614 A TW 084107614A TW 84107614 A TW84107614 A TW 84107614A TW 276345 B TW276345 B TW 276345B
Authority
TW
Taiwan
Application number
TW084107614A
Original Assignee
Delta Circuit Proctection & Controls Ltd
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 Delta Circuit Proctection & Controls Ltd filed Critical Delta Circuit Proctection & Controls Ltd
Application granted granted Critical
Publication of TW276345B publication Critical patent/TW276345B/zh

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
    • 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
    • H01H2083/146—Provisions for avoiding disadvantages of having asymetrical primaries, e.g. induction of a magnetic field even by zero difference current
    • 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)
TW084107614A 1994-07-23 1995-07-22 TW276345B (zh)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9414873A GB9414873D0 (en) 1994-07-23 1994-07-23 Current imbalance sensor

Publications (1)

Publication Number Publication Date
TW276345B true TW276345B (zh) 1996-05-21

Family

ID=10758774

Family Applications (1)

Application Number Title Priority Date Filing Date
TW084107614A TW276345B (zh) 1994-07-23 1995-07-22

Country Status (5)

Country Link
AU (1) AU2934295A (zh)
GB (1) GB9414873D0 (zh)
TW (1) TW276345B (zh)
WO (1) WO1996003760A1 (zh)
ZA (1) ZA956113B (zh)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19606122C2 (de) * 1996-02-20 1998-06-04 Metrawatt Gmbh Gossen Laborprüfgerät zur Ermittlung der Isolationsqualität eines daran zu Prüfzwecken anschließbaren Verbrauchers
ATE227883T1 (de) * 1997-09-19 2002-11-15 Circuit Breaker Ind Schutzschalter
ITBG20030034A1 (it) * 2003-05-20 2004-11-21 Abb Service Srl Dispositivo per il contenimento di mezzi sensori di corrente.

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB719219A (en) * 1951-04-14 1954-12-01 Anderson Boyes & Co Ltd Improvements in or relating to polyphase current transformers for use in earth leakage protective systems
DE3140866A1 (de) * 1981-10-14 1983-04-21 Siemens AG, 1000 Berlin und 8000 München Anordnung zur vermeidung von fehlimpulsen eines summenstromwandlers
FR2625834B1 (fr) * 1988-01-07 1990-09-07 Merlin Gerin Relais differentiel a tore embrochable
DE4215900C1 (de) * 1992-05-14 1993-12-23 Siemens Ag Anordnung zum Erfassen von Differenzströmen

Also Published As

Publication number Publication date
GB9414873D0 (en) 1994-09-14
WO1996003760A1 (en) 1996-02-08
AU2934295A (en) 1996-02-22
ZA956113B (en) 1996-03-06

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