JPS57184983A - Detecting method for trouble point of cable - Google Patents

Detecting method for trouble point of cable

Info

Publication number
JPS57184983A
JPS57184983A JP6930781A JP6930781A JPS57184983A JP S57184983 A JPS57184983 A JP S57184983A JP 6930781 A JP6930781 A JP 6930781A JP 6930781 A JP6930781 A JP 6930781A JP S57184983 A JPS57184983 A JP S57184983A
Authority
JP
Japan
Prior art keywords
trouble point
cable
power source
measuring
end parts
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.)
Pending
Application number
JP6930781A
Other languages
Japanese (ja)
Inventor
Toshiaki Hara
Shuji Furukawa
Masakazu Kusakabe
Kazumi Sato
Yoshio Maruyama
Teruyoshi Tanabe
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.)
Furukawa Electric Co Ltd
Kansai Electric Power Co Inc
Original Assignee
Furukawa Electric Co Ltd
Kansai Electric Power Co Inc
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 Furukawa Electric Co Ltd, Kansai Electric Power Co Inc filed Critical Furukawa Electric Co Ltd
Priority to JP6930781A priority Critical patent/JPS57184983A/en
Publication of JPS57184983A publication Critical patent/JPS57184983A/en
Pending 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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Locating Faults (AREA)

Abstract

PURPOSE:To perform the detection of a trouble point, by a method wherein, in case the trouble point of a cable is detected, the end part at an opposite side to that of a measuring end part is short-circuited, a first and a second power source are used, and they are applied between the measuring part and a cable shielding layer through selection of polarity. CONSTITUTION:A sound phase cable conductor 1 and a throuble phase cable conductor 2, having a trouble point 3, are short-circuited at end parts 1b and 2b at an opposite side to that of measuring end parts 1a and 2a, with a conductor 4. A DC power source E1 is connected to the end parts 1a and 2a through switches S1, S2 which are polarity-switched and interlocked, and a DC power source E2 is further applied. A voltage-detecting resistance Rv is connected between the power source E2 and a cable shielding layer 5 to measure a potential difference of Rv as V1 when S1 and S2 are brought to an a-side in a manner to bring S3 to an a-side, as V2 in the case of a b-side, as V3 when S3 to a b-side and S1, S2 to an a-side and as V4 when S1 and S2 are brought to an a-side in a state to bring S3 to a b-side. Resistance values R1 and R2 to the measuring ends 1a and 2a and a trouble point can be found by a formula, and this permits the detection of a trouble point.
JP6930781A 1981-05-11 1981-05-11 Detecting method for trouble point of cable Pending JPS57184983A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6930781A JPS57184983A (en) 1981-05-11 1981-05-11 Detecting method for trouble point of cable

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6930781A JPS57184983A (en) 1981-05-11 1981-05-11 Detecting method for trouble point of cable

Publications (1)

Publication Number Publication Date
JPS57184983A true JPS57184983A (en) 1982-11-13

Family

ID=13398767

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6930781A Pending JPS57184983A (en) 1981-05-11 1981-05-11 Detecting method for trouble point of cable

Country Status (1)

Country Link
JP (1) JPS57184983A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59218970A (en) * 1983-05-28 1984-12-10 Japanese National Railways<Jnr> Method for ranging earthing point in high voltage distribution line of ac voltage superposing type
JPS59230176A (en) * 1983-06-11 1984-12-24 Japanese National Railways<Jnr> Spotting method of short-circuit point of high-voltage distribution line

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59218970A (en) * 1983-05-28 1984-12-10 Japanese National Railways<Jnr> Method for ranging earthing point in high voltage distribution line of ac voltage superposing type
JPH0552468B2 (en) * 1983-05-28 1993-08-05 Railway Technical Res Inst
JPS59230176A (en) * 1983-06-11 1984-12-24 Japanese National Railways<Jnr> Spotting method of short-circuit point of high-voltage distribution line

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