GB9116888D0 - A c mains monitoring circuit - Google Patents

A c mains monitoring circuit

Info

Publication number
GB9116888D0
GB9116888D0 GB919116888A GB9116888A GB9116888D0 GB 9116888 D0 GB9116888 D0 GB 9116888D0 GB 919116888 A GB919116888 A GB 919116888A GB 9116888 A GB9116888 A GB 9116888A GB 9116888 D0 GB9116888 D0 GB 9116888D0
Authority
GB
United Kingdom
Prior art keywords
monitoring circuit
mains monitoring
mains
circuit
monitoring
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.)
Granted
Application number
GB919116888A
Other versions
GB2251992A (en
GB2251992B (en
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.)
Shakira Ltd
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 GB9116888D0 publication Critical patent/GB9116888D0/en
Publication of GB2251992A publication Critical patent/GB2251992A/en
Application granted granted Critical
Publication of GB2251992B publication Critical patent/GB2251992B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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)
GB9116888A 1991-01-17 1991-08-06 A C mains monitoring circuit Expired - Fee Related GB2251992B (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 (3)

Publication Number Publication Date
GB9116888D0 true GB9116888D0 (en) 1991-09-18
GB2251992A GB2251992A (en) 1992-07-22
GB2251992B GB2251992B (en) 1994-04-06

Family

ID=11007875

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9116888A Expired - Fee Related GB2251992B (en) 1991-01-17 1991-08-06 A C mains monitoring circuit

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
IE64082B1 (en) 1995-07-12
ZA911358B (en) 1991-11-27
GB2251992B (en) 1994-04-06
IE910159A1 (en) 1992-07-29

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19980806