JPS5779467A - Searching method for accident point of aviation lighting circuit - Google Patents

Searching method for accident point of aviation lighting circuit

Info

Publication number
JPS5779467A
JPS5779467A JP55154944A JP15494480A JPS5779467A JP S5779467 A JPS5779467 A JP S5779467A JP 55154944 A JP55154944 A JP 55154944A JP 15494480 A JP15494480 A JP 15494480A JP S5779467 A JPS5779467 A JP S5779467A
Authority
JP
Japan
Prior art keywords
accident
voltage
cable
terminal
point
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
JP55154944A
Other languages
Japanese (ja)
Other versions
JPS637625B2 (en
Inventor
Toshio Kasahara
Mitsugi Aihara
Toshinari Hashizume
Yasumitsu Ebinuma
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.)
SWCC Corp
Original Assignee
Showa Electric Wire and Cable Co
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 Showa Electric Wire and Cable Co filed Critical Showa Electric Wire and Cable Co
Priority to JP55154944A priority Critical patent/JPS5779467A/en
Publication of JPS5779467A publication Critical patent/JPS5779467A/en
Publication of JPS637625B2 publication Critical patent/JPS637625B2/ja
Granted 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
    • G01R31/11—Locating faults in cables, transmission lines, or networks using pulse reflection methods

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Locating Faults (AREA)
  • Circuit Arrangement For Electric Light Sources In General (AREA)

Abstract

PURPOSE:To spot the position of an accident by using a time difference between an induced voltage based upon discharge due to imcomplete contact and a reflected wave at a terminal which are detected through a cable for accident-point detection provided successively along a lighting circuit. CONSTITUTION:When imperfect contact occurs at the connection point between a transformer 2-2 for lighting and a cable 3-3, discharge is caused there and at the same time, a voltage is induced at a cable for accident-point detection. A part of the voltage is applied in the opposite direction to a detector and, after reflected at the other terminal 9 of the cable 5, it is applied to the detector 6. The time difference T between a voltage applied directly to the detector 6 and the voltage reflected at the other terminal 9 and then applied and the propagation speed (v) of signal are used to know the distance (l) between the accident point and terminal 9 from l=(vXT)/2. This method makes it possible to know a faulty point like imperfect contact which can not be detected by a bridge method.
JP55154944A 1980-11-04 1980-11-04 Searching method for accident point of aviation lighting circuit Granted JPS5779467A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55154944A JPS5779467A (en) 1980-11-04 1980-11-04 Searching method for accident point of aviation lighting circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55154944A JPS5779467A (en) 1980-11-04 1980-11-04 Searching method for accident point of aviation lighting circuit

Publications (2)

Publication Number Publication Date
JPS5779467A true JPS5779467A (en) 1982-05-18
JPS637625B2 JPS637625B2 (en) 1988-02-17

Family

ID=15595335

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55154944A Granted JPS5779467A (en) 1980-11-04 1980-11-04 Searching method for accident point of aviation lighting circuit

Country Status (1)

Country Link
JP (1) JPS5779467A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006077478A3 (en) * 2005-01-19 2007-08-23 Ocem Spa A method for detecting and locating a ground failure in an electrical line

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0311627U (en) * 1989-06-19 1991-02-05

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006077478A3 (en) * 2005-01-19 2007-08-23 Ocem Spa A method for detecting and locating a ground failure in an electrical line

Also Published As

Publication number Publication date
JPS637625B2 (en) 1988-02-17

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