JPS54155082A - Insulating faulty point location detecting circuit of wire and cable - Google Patents

Insulating faulty point location detecting circuit of wire and cable

Info

Publication number
JPS54155082A
JPS54155082A JP6355478A JP6355478A JPS54155082A JP S54155082 A JPS54155082 A JP S54155082A JP 6355478 A JP6355478 A JP 6355478A JP 6355478 A JP6355478 A JP 6355478A JP S54155082 A JPS54155082 A JP S54155082A
Authority
JP
Japan
Prior art keywords
galvanometer
terminal
locations
sliding
cable
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
JP6355478A
Other languages
Japanese (ja)
Inventor
Takashi Mizuniwa
Hisaya Ikegami
Kazukiyo Nakanishi
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.)
Hitachi Cable Ltd
Original Assignee
Hitachi Cable 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 Hitachi Cable Ltd filed Critical Hitachi Cable Ltd
Priority to JP6355478A priority Critical patent/JPS54155082A/en
Publication of JPS54155082A publication Critical patent/JPS54155082A/en
Pending legal-status Critical Current

Links

Landscapes

  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
  • Locating Faults (AREA)

Abstract

PURPOSE: To detect the locations of insulation faulty points with comparative high- resistance of a wire and a cable, by balanceing a bridge circuit by denying induced voltage by applying induced voltage applied to a galvanometer and voltage with inverse polarity to a galvanometer circuit.
CONSTITUTION: If a sliding terminal of a sliding resistance 9 is moved up to a left end when a 1.5V dry cell is used for an auxiliary direct-current power source 6 and a switch 10 is made, not more than 1.5V voltage is applied between the earth E and a sliding terminal C of a sliding resistance 2. When changing over a change-over switch 8, polarity becomes inverse. Thus, a pointer of a galvanometer G is freely set to the maximum division at the minus side from the maximum division at plus side by varying the locations of the sliding terminal of the sliding resistance 9. If induced voltage of cables 1, 1' to be measured is applied between A, B when the switch 10 is broken, voltage, which differs by the locations of the terminal C of the sliding resistance 2, is applied to the galvanometer G, and the pointer swings to the plus side or the minus side. If a switch 11 is made using the location of the fixed swing as the zero location of the galvanometer G and a bridge circuit is balanced by moving the terminal C, the locations of the faulty points 4 of a cable can be measured.
COPYRIGHT: (C)1979,JPO&Japio
JP6355478A 1978-05-26 1978-05-26 Insulating faulty point location detecting circuit of wire and cable Pending JPS54155082A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6355478A JPS54155082A (en) 1978-05-26 1978-05-26 Insulating faulty point location detecting circuit of wire and cable

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6355478A JPS54155082A (en) 1978-05-26 1978-05-26 Insulating faulty point location detecting circuit of wire and cable

Publications (1)

Publication Number Publication Date
JPS54155082A true JPS54155082A (en) 1979-12-06

Family

ID=13232551

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6355478A Pending JPS54155082A (en) 1978-05-26 1978-05-26 Insulating faulty point location detecting circuit of wire and cable

Country Status (1)

Country Link
JP (1) JPS54155082A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0413980A (en) * 1990-05-08 1992-01-17 Tokyo Electric Power Co Inc:The Apparatus for measuring insulation deterioration of cable line
CN110554295A (en) * 2018-06-04 2019-12-10 中冶天工集团有限公司 method for searching power cable insulation fault point by using high-precision multimeter

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0413980A (en) * 1990-05-08 1992-01-17 Tokyo Electric Power Co Inc:The Apparatus for measuring insulation deterioration of cable line
CN110554295A (en) * 2018-06-04 2019-12-10 中冶天工集团有限公司 method for searching power cable insulation fault point by using high-precision multimeter

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