AU2934295A - Current imbalance sensor - Google Patents

Current imbalance sensor

Info

Publication number
AU2934295A
AU2934295A AU29342/95A AU2934295A AU2934295A AU 2934295 A AU2934295 A AU 2934295A AU 29342/95 A AU29342/95 A AU 29342/95A AU 2934295 A AU2934295 A AU 2934295A AU 2934295 A AU2934295 A AU 2934295A
Authority
AU
Australia
Prior art keywords
current imbalance
imbalance sensor
sensor
current
imbalance
Prior art date
Legal status (The legal status 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 status listed.)
Abandoned
Application number
AU29342/95A
Inventor
Mark David Crosier
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Delta Circuit Protection and Controls Ltd
Original Assignee
Delta Circuit Protection and 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 Protection and Controls Ltd filed Critical Delta Circuit Protection and Controls Ltd
Publication of AU2934295A publication Critical patent/AU2934295A/en
Abandoned legal-status Critical Current

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)
AU29342/95A 1994-07-23 1995-07-18 Current imbalance sensor Abandoned AU2934295A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB9414873 1994-07-23
GB9414873A GB9414873D0 (en) 1994-07-23 1994-07-23 Current imbalance sensor
PCT/GB1995/001691 WO1996003760A1 (en) 1994-07-23 1995-07-18 Current imbalance sensor

Publications (1)

Publication Number Publication Date
AU2934295A true AU2934295A (en) 1996-02-22

Family

ID=10758774

Family Applications (1)

Application Number Title Priority Date Filing Date
AU29342/95A Abandoned AU2934295A (en) 1994-07-23 1995-07-18 Current imbalance sensor

Country Status (5)

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

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19606122C2 (en) * 1996-02-20 1998-06-04 Metrawatt Gmbh Gossen Laboratory test device for determining the insulation quality of a consumer that can be connected to it for test purposes
ATE227883T1 (en) * 1997-09-19 2002-11-15 Circuit Breaker Ind CIRCUIT BREAKER
ITBG20030034A1 (en) * 2003-05-20 2004-11-21 Abb Service Srl DEVICE FOR CONTAINING HALF CURRENT SENSORS.

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 (en) * 1981-10-14 1983-04-21 Siemens AG, 1000 Berlin und 8000 München ARRANGEMENT FOR PREVENTING MISTAKE PULSES OF A TOTAL CURRENT TRANSFORMER
FR2625834B1 (en) * 1988-01-07 1990-09-07 Merlin Gerin DIFFERENTIAL RELAY WITH PLUG-IN TORQUE
DE4215900C1 (en) * 1992-05-14 1993-12-23 Siemens Ag Difference current detection system for DC fault current - has three or more current conductors arranged symmetrical to centre of sum current transducer core

Also Published As

Publication number Publication date
ZA956113B (en) 1996-03-06
GB9414873D0 (en) 1994-09-14
TW276345B (en) 1996-05-21
WO1996003760A1 (en) 1996-02-08

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