JPS5465906A - Method of detecting wear of trolley wire - Google Patents

Method of detecting wear of trolley wire

Info

Publication number
JPS5465906A
JPS5465906A JP13323977A JP13323977A JPS5465906A JP S5465906 A JPS5465906 A JP S5465906A JP 13323977 A JP13323977 A JP 13323977A JP 13323977 A JP13323977 A JP 13323977A JP S5465906 A JPS5465906 A JP S5465906A
Authority
JP
Japan
Prior art keywords
trolley wire
wire
wear
optical
luminous element
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
JP13323977A
Other languages
Japanese (ja)
Inventor
Masayuki Yamaguchi
Shiro Tanno
Makoto Isono
Makoto Hara
Mamoru Kaneoka
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 JP13323977A priority Critical patent/JPS5465906A/en
Publication of JPS5465906A publication Critical patent/JPS5465906A/en
Pending legal-status Critical Current

Links

Landscapes

  • Length Measuring Devices By Optical Means (AREA)

Abstract

PURPOSE: To provide a detection system which enables accurate management of the wear of the trolley wire as compared with the conventional visual method through detection based on the condition of operation while ensuring accurate action and improving the reliability with a simple device employing a optical system for signal.
CONSTITUTION: For example, an alarm wire 1 insulated is buried at a position which is considered as the wear limit of a AC trolley wire T. A luminous element 2 made of luminous semi-conductor and a DC power source are directly connected to the alarm wire 1 to form a DC circuit. One end of an optical carrier cable 4 such as optical fiber cable is directed to the luminous element 2 while at the other end thereof, provided is an optical-electric signal convertor 5 to which a detection indicator 6 is connected. On the other hand, the power source 3 is charged by a rectifying circuit 8 on the secondary side of a power transformer mounted on the trolley wire T. With such an arrangement, any wear of the trolley wire breaks the insulation of the alarm wire 1 causing the luminous element 2 to emit light thereby actuating the device 6.
COPYRIGHT: (C)1979,JPO&Japio
JP13323977A 1977-11-07 1977-11-07 Method of detecting wear of trolley wire Pending JPS5465906A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13323977A JPS5465906A (en) 1977-11-07 1977-11-07 Method of detecting wear of trolley wire

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13323977A JPS5465906A (en) 1977-11-07 1977-11-07 Method of detecting wear of trolley wire

Publications (1)

Publication Number Publication Date
JPS5465906A true JPS5465906A (en) 1979-05-28

Family

ID=15099952

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13323977A Pending JPS5465906A (en) 1977-11-07 1977-11-07 Method of detecting wear of trolley wire

Country Status (1)

Country Link
JP (1) JPS5465906A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4912955B1 (en) * 1970-02-10 1974-03-28

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4912955B1 (en) * 1970-02-10 1974-03-28

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