GB2005930A - Finding faults in electrical cables - Google Patents

Finding faults in electrical cables

Info

Publication number
GB2005930A
GB2005930A GB7836397A GB7836397A GB2005930A GB 2005930 A GB2005930 A GB 2005930A GB 7836397 A GB7836397 A GB 7836397A GB 7836397 A GB7836397 A GB 7836397A GB 2005930 A GB2005930 A GB 2005930A
Authority
GB
United Kingdom
Prior art keywords
cable
electrical cables
switching arrangement
finding faults
finding
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
GB7836397A
Other versions
GB2005930B (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.)
Foster Transformers Ltd
Original Assignee
Foster Transformers 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 Foster Transformers Ltd filed Critical Foster Transformers Ltd
Priority to GB7836397A priority Critical patent/GB2005930B/en
Publication of GB2005930A publication Critical patent/GB2005930A/en
Application granted granted Critical
Publication of GB2005930B publication Critical patent/GB2005930B/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/08—Locating faults in cables, transmission lines, or networks
    • G01R31/088—Aspects of digital computing
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/08—Locating faults in cables, transmission lines, or networks
    • G01R31/11—Locating faults in cables, transmission lines, or networks using pulse reflection methods

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Mathematical Physics (AREA)
  • Theoretical Computer Science (AREA)
  • Testing Of Individual Semiconductor Devices (AREA)

Abstract

Electrical cable re-energising apparatus for use in fault finding is inserted in the circuit of a faulty cable in place of a blown protective fuse. The apparatus turns a controlled semiconductor switching arrangement on and off at zero cross-over points of the cable input voltage and allows a fault current to flow for 1 to 5 complete cycles, during which known test operations are performed. The switching arrangement comprises inverse parallel connected thyristors.
GB7836397A 1977-10-07 1978-09-11 Electrical cable re-energising apparatus Expired GB2005930B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB7836397A GB2005930B (en) 1977-10-07 1978-09-11 Electrical cable re-energising apparatus

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB4187677 1977-10-07
GB7836397A GB2005930B (en) 1977-10-07 1978-09-11 Electrical cable re-energising apparatus

Publications (2)

Publication Number Publication Date
GB2005930A true GB2005930A (en) 1979-04-25
GB2005930B GB2005930B (en) 1982-05-06

Family

ID=26264766

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7836397A Expired GB2005930B (en) 1977-10-07 1978-09-11 Electrical cable re-energising apparatus

Country Status (1)

Country Link
GB (1) GB2005930B (en)

Also Published As

Publication number Publication date
GB2005930B (en) 1982-05-06

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Legal Events

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