JPS5642156A - Measuring method for accident point of cable - Google Patents

Measuring method for accident point of cable

Info

Publication number
JPS5642156A
JPS5642156A JP11810079A JP11810079A JPS5642156A JP S5642156 A JPS5642156 A JP S5642156A JP 11810079 A JP11810079 A JP 11810079A JP 11810079 A JP11810079 A JP 11810079A JP S5642156 A JPS5642156 A JP S5642156A
Authority
JP
Japan
Prior art keywords
pulses
phase line
accident
accident point
near end
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
JP11810079A
Other languages
Japanese (ja)
Inventor
Kazuo Kawa
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.)
Dainichi Nippon Cables Ltd
Original Assignee
Dainichi Nippon Cables 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 Dainichi Nippon Cables Ltd filed Critical Dainichi Nippon Cables Ltd
Priority to JP11810079A priority Critical patent/JPS5642156A/en
Publication of JPS5642156A publication Critical patent/JPS5642156A/en
Pending legal-status Critical Current

Links

Landscapes

  • Locating Faults (AREA)

Abstract

PURPOSE: To enable easy measurement of the position of the accident point without using a differential detector by a method wherein pulses of reversed polarity, having the same potential and the same waveform, are sent out to a sound phase line and an accident phase line and at the middle point thereof the pulses are obtained differentially.
CONSTITUTION: The sound phase line X and the branch line X' thereof are charged with the voltage from a DC power source E. And, the near end AX of the sound phase line X and the near end AY of an accident phase line Y are short-circuitted by a spherical electrode S inserted between two ends AX and AY. Then, from the sphereical electrode S pulses of reversed polarities are transmitted to the lines X and Y, respectively, and these pulses are of the same voltage and of the same waveform. The reflected pulse at the accident point F appears as the 1st reflected pulse next to a sent-out pulse on a synchroscope SH, and the distance from the near end AY to the accident point F is calculated based on the speed of the transmission of pulses through the cable.
COPYRIGHT: (C)1981,JPO&Japio
JP11810079A 1979-09-14 1979-09-14 Measuring method for accident point of cable Pending JPS5642156A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11810079A JPS5642156A (en) 1979-09-14 1979-09-14 Measuring method for accident point of cable

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11810079A JPS5642156A (en) 1979-09-14 1979-09-14 Measuring method for accident point of cable

Publications (1)

Publication Number Publication Date
JPS5642156A true JPS5642156A (en) 1981-04-20

Family

ID=14727997

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11810079A Pending JPS5642156A (en) 1979-09-14 1979-09-14 Measuring method for accident point of cable

Country Status (1)

Country Link
JP (1) JPS5642156A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60181665A (en) * 1984-02-29 1985-09-17 Dainichi Nippon Cables Ltd Locating of insulation deterioration point of cable
JPS6255569A (en) * 1985-09-04 1987-03-11 Showa Electric Wire & Cable Co Ltd Location of fault point for cable line
JPH0191263U (en) * 1987-12-09 1989-06-15

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60181665A (en) * 1984-02-29 1985-09-17 Dainichi Nippon Cables Ltd Locating of insulation deterioration point of cable
JPS6255569A (en) * 1985-09-04 1987-03-11 Showa Electric Wire & Cable Co Ltd Location of fault point for cable line
JPH0191263U (en) * 1987-12-09 1989-06-15

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