ZA911358B - Residual current device - Google Patents

Residual current device

Info

Publication number
ZA911358B
ZA911358B ZA911358A ZA911358A ZA911358B ZA 911358 B ZA911358 B ZA 911358B ZA 911358 A ZA911358 A ZA 911358A ZA 911358 A ZA911358 A ZA 911358A ZA 911358 B ZA911358 B ZA 911358B
Authority
ZA
South Africa
Prior art keywords
current device
residual current
residual
current
Prior art date
Application number
ZA911358A
Inventor
Patrick Ward
Ward Patrick
Original Assignee
Shakira 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 Shakira Ltd filed Critical Shakira Ltd
Publication of ZA911358B publication Critical patent/ZA911358B/en

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H5/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection
    • H02H5/10—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection responsive to mechanical injury, e.g. rupture of line, breakage of earth connection
    • H02H5/105—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection responsive to mechanical injury, e.g. rupture of line, breakage of earth connection responsive to deterioration or interruption of earth connection
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/26—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents
    • H02H3/32—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors
    • H02H3/33—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors using summation current transformers
    • H02H3/338—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors using summation current transformers also responsive to wiring error, e.g. loss of neutral, break

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
  • Emergency Protection Circuit Devices (AREA)
ZA911358A 1991-01-17 1991-02-25 Residual current device ZA911358B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IE15991A IE64082B1 (en) 1991-01-17 1991-01-17 A C mains monitoring circuit

Publications (1)

Publication Number Publication Date
ZA911358B true ZA911358B (en) 1991-11-27

Family

ID=11007875

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA911358A ZA911358B (en) 1991-01-17 1991-02-25 Residual current device

Country Status (3)

Country Link
GB (1) GB2251992B (en)
IE (1) IE64082B1 (en)
ZA (1) ZA911358B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2268011B (en) * 1992-06-18 1995-11-29 Shakira Ltd A residual current device

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB830018A (en) * 1957-03-13 1960-03-09 Michael Cornelius Gerrard Protective device for electrical circuits and apparatus
GB1107879A (en) * 1964-04-17 1968-03-27 J A Crabtree Proprietary Ltd Improvements in or relating to earth leakage protection devices
GB2128047B (en) * 1982-10-05 1986-10-08 Northern Eng Ind Earth leakage monitor & earth proving apparatus
US4598331A (en) * 1984-07-30 1986-07-01 Technology Research Corporation Ground fault current interrupter circuit with open neutral and ground lead protection
GB2178916B (en) * 1985-06-22 1989-09-06 Ashley Accessories Ltd Detecting abnormal neutral line conditions in electrical circuits
GB2214734B (en) * 1988-01-29 1992-06-03 B & R Electrical Prod Ltd Residual current circuit breaker
IT1227723B (en) * 1988-12-23 1991-05-06 Elettrocondutture POSITIVE SAFETY DEVICE FOR REMOTE OPENING, IN AN EMERGENCY SITUATION, IN PARTICULAR OF DIFFERENTIAL SWITCHES

Also Published As

Publication number Publication date
GB2251992A (en) 1992-07-22
IE910159A1 (en) 1992-07-29
GB2251992B (en) 1994-04-06
GB9116888D0 (en) 1991-09-18
IE64082B1 (en) 1995-07-12

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