JPH01148872U - - Google Patents

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Publication number
JPH01148872U
JPH01148872U JP4490288U JP4490288U JPH01148872U JP H01148872 U JPH01148872 U JP H01148872U JP 4490288 U JP4490288 U JP 4490288U JP 4490288 U JP4490288 U JP 4490288U JP H01148872 U JPH01148872 U JP H01148872U
Authority
JP
Japan
Prior art keywords
soil
amplifier
signal
signal cable
signals
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
JP4490288U
Other languages
English (en)
Other versions
JPH0710302Y2 (ja
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 filed Critical
Priority to JP1988044902U priority Critical patent/JPH0710302Y2/ja
Publication of JPH01148872U publication Critical patent/JPH01148872U/ja
Application granted granted Critical
Publication of JPH0710302Y2 publication Critical patent/JPH0710302Y2/ja
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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  • Locating Faults (AREA)

Description

【図面の簡単な説明】
図面はいずれも本考案に係るものであり、第１
図は絶縁不良個所検知装置の全体斜視図、第２図
はその使用状態を説明する電気回路図、第３図乃
至第５図はそれぞれ信号ケーブルと絶縁不良検知
装置との異なる位置関係を示す軌道の断面図、第
６図は単線の信号ケーブルの絶縁不良個所を検知
する場合の電気回路図である。 １０……信号ケーブル、３ａ，３ｂ……検知棒
、６……増幅器、７……イヤホーン。

Claims (1)

    【実用新案登録請求の範囲】
  1. 信号ケーブル近辺の土中へ差し込まれ、土中の
    漏洩信号を検知する二本の検知棒を二股状に設け
    た支持板と、該検知棒に対して電気的に接続され
    、検知した土中の漏洩信号を増幅する増幅器と、
    該増幅器の出力信号を音、光、その他の認識可能
    な形態に変換する変換器とで構成されたことを特
    徴とする信号ケーブルの絶縁不良検知装置。
JP1988044902U 1988-04-01 1988-04-01 信号ケーブルの絶縁不良検知装置 Expired - Lifetime JPH0710302Y2 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1988044902U JPH0710302Y2 (ja) 1988-04-01 1988-04-01 信号ケーブルの絶縁不良検知装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1988044902U JPH0710302Y2 (ja) 1988-04-01 1988-04-01 信号ケーブルの絶縁不良検知装置

Publications (2)

Publication Number Publication Date
JPH01148872U true JPH01148872U (ja) 1989-10-16
JPH0710302Y2 JPH0710302Y2 (ja) 1995-03-08

Family

ID=31271237

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1988044902U Expired - Lifetime JPH0710302Y2 (ja) 1988-04-01 1988-04-01 信号ケーブルの絶縁不良検知装置

Country Status (1)

Country Link
JP (1) JPH0710302Y2 (ja)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3792350A (en) * 1972-03-15 1974-02-12 Bell Telephone Labor Inc Detection of metalshield faults in buried cable
US3991363A (en) * 1975-08-11 1976-11-09 Bell Telephone Laboratories, Incorporated Method and apparatus for detecting faults in buried insulated conductors
US4039938A (en) * 1976-09-08 1977-08-02 Bell Telephone Laboratories, Incorporated Method and apparatus for detecting faults in buried insulated conductors

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3792350A (en) * 1972-03-15 1974-02-12 Bell Telephone Labor Inc Detection of metalshield faults in buried cable
US3991363A (en) * 1975-08-11 1976-11-09 Bell Telephone Laboratories, Incorporated Method and apparatus for detecting faults in buried insulated conductors
US4039938A (en) * 1976-09-08 1977-08-02 Bell Telephone Laboratories, Incorporated Method and apparatus for detecting faults in buried insulated conductors

Also Published As

Publication number Publication date
JPH0710302Y2 (ja) 1995-03-08

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