ZA956113B - Current imbalance sensor - Google Patents

Current imbalance sensor

Info

Publication number
ZA956113B
ZA956113B ZA956113A ZA956113A ZA956113B ZA 956113 B ZA956113 B ZA 956113B ZA 956113 A ZA956113 A ZA 956113A ZA 956113 A ZA956113 A ZA 956113A ZA 956113 B ZA956113 B ZA 956113B
Authority
ZA
South Africa
Prior art keywords
current imbalance
imbalance sensor
sensor
current
imbalance
Prior art date
Application number
ZA956113A
Other languages
English (en)
Inventor
Mark David Crosier
Original Assignee
Delta Circuits Protection
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 Circuits Protection filed Critical Delta Circuits Protection
Publication of ZA956113B publication Critical patent/ZA956113B/xx

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)
ZA956113A 1994-07-23 1995-07-21 Current imbalance sensor ZA956113B (en)

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
ZA956113B true ZA956113B (en) 1996-03-06

Family

ID=10758774

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA956113A ZA956113B (en) 1994-07-23 1995-07-21 Current imbalance sensor

Country Status (5)

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

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
DE69809359T2 (de) * 1997-09-19 2003-09-04 Circuit Breaker Industries Ltd., Elandsfontein 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
TW276345B (ko) 1996-05-21

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