GB2292225B - Loop testers - Google Patents

Loop testers

Info

Publication number
GB2292225B
GB2292225B GB9516397A GB9516397A GB2292225B GB 2292225 B GB2292225 B GB 2292225B GB 9516397 A GB9516397 A GB 9516397A GB 9516397 A GB9516397 A GB 9516397A GB 2292225 B GB2292225 B GB 2292225B
Authority
GB
United Kingdom
Prior art keywords
testers
loop
loop testers
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.)
Expired - Fee Related
Application number
GB9516397A
Other versions
GB2292225A (en
GB2292225A8 (en
GB9516397D0 (en
Inventor
Geoffrey Keith Lawlor
Neil John Lundy
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.)
JEKYLL ELECTRIC TECHNOLOGY Ltd
Original Assignee
JEKYLL ELECTRIC TECHNOLOGY 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 JEKYLL ELECTRIC TECHNOLOGY Ltd filed Critical JEKYLL ELECTRIC TECHNOLOGY Ltd
Publication of GB9516397D0 publication Critical patent/GB9516397D0/en
Publication of GB2292225A publication Critical patent/GB2292225A/en
Publication of GB2292225A8 publication Critical patent/GB2292225A8/en
Application granted granted Critical
Publication of GB2292225B publication Critical patent/GB2292225B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
    • G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
    • G01R27/16—Measuring impedance of element or network through which a current is passing from another source, e.g. cable, power line
    • G01R27/18—Measuring resistance to earth, i.e. line to ground

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Resistance Or Impedance (AREA)
GB9516397A 1994-08-10 1995-08-10 Loop testers Expired - Fee Related GB2292225B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9416122A GB9416122D0 (en) 1994-08-10 1994-08-10 Loop testers

Publications (4)

Publication Number Publication Date
GB9516397D0 GB9516397D0 (en) 1995-10-11
GB2292225A GB2292225A (en) 1996-02-14
GB2292225A8 GB2292225A8 (en) 1996-02-14
GB2292225B true GB2292225B (en) 1998-02-18

Family

ID=10759653

Family Applications (2)

Application Number Title Priority Date Filing Date
GB9416122A Pending GB9416122D0 (en) 1994-08-10 1994-08-10 Loop testers
GB9516397A Expired - Fee Related GB2292225B (en) 1994-08-10 1995-08-10 Loop testers

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB9416122A Pending GB9416122D0 (en) 1994-08-10 1994-08-10 Loop testers

Country Status (1)

Country Link
GB (2) GB9416122D0 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9313602D0 (en) * 1993-07-01 1993-08-18 Avo Megger Instr Ltd Electrical test instrument
GB2343005B (en) * 1998-10-06 2002-10-02 Desmond Wheable An instrument for the measurement of earth loop resistance without tripping R C D's (Residual current detector)
GB2380554A (en) * 2001-10-02 2003-04-09 Robin Electronics Ltd Circuit Tester
GB2381322B (en) 2001-10-24 2005-09-14 Martindale Electric Company Lt Loop impedance meter
US7265555B2 (en) 2005-11-09 2007-09-04 Douglas William Batten Loop impedance meter
GB2591998B (en) * 2020-02-05 2022-04-06 Megger Instruments Ltd Measuring loop resistance

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB883718A (en) * 1959-09-08 1961-12-06 Dehavilland Aircraft Improved impedance indication apparatus
GB2097942A (en) * 1981-05-06 1982-11-10 Dorman Smith Switchgear Ltd Short circuit current protection

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB883718A (en) * 1959-09-08 1961-12-06 Dehavilland Aircraft Improved impedance indication apparatus
GB2097942A (en) * 1981-05-06 1982-11-10 Dorman Smith Switchgear Ltd Short circuit current protection

Also Published As

Publication number Publication date
GB2292225A (en) 1996-02-14
GB9416122D0 (en) 1994-09-28
GB2292225A8 (en) 1996-02-14
GB9516397D0 (en) 1995-10-11

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Legal Events

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

Effective date: 20050810