JPH01179281U - - Google Patents

Info

Publication number
JPH01179281U
JPH01179281U JP7676388U JP7676388U JPH01179281U JP H01179281 U JPH01179281 U JP H01179281U JP 7676388 U JP7676388 U JP 7676388U JP 7676388 U JP7676388 U JP 7676388U JP H01179281 U JPH01179281 U JP H01179281U
Authority
JP
Japan
Prior art keywords
current
signal
resistance value
circuit
amplifies
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
JP7676388U
Other languages
English (en)
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 JP7676388U priority Critical patent/JPH01179281U/ja
Publication of JPH01179281U publication Critical patent/JPH01179281U/ja
Pending legal-status Critical Current

Links

Landscapes

  • Measurement Of Resistance Or Impedance (AREA)
  • Testing Electric Properties And Detecting Electric Faults (AREA)

Description

【図面の簡単な説明】
第1図は本考案による主回路異常監視装置の1
実施例を示すブロツク図である。 1……低圧電路、3,4……1次断路部、5,
6,13……絶縁形増幅器、7,8,14……整
流回路、10……変流器、15……演算回路、2
5……判定出力回路。

Claims (1)

    【実用新案登録請求の範囲】
  1. 低圧電路における被監視部の両端電圧を増幅す
    る絶縁形増幅器と、前記低圧電路の主回路電流を
    検出する変流器と、該変流器からの検出電流を増
    幅する絶縁形増幅器と、前記両増幅器からの電圧
    信号及び電流信号をそれぞれ整流する整流回路と
    、該両整流回路からの電圧信号及び電流信号によ
    り抵抗値を算出する演算回路と、前記抵抗値を基
    準値と比較し該基準値以上により警報信号を出力
    する判定出力回路とを備えた主回路異常監視装置
JP7676388U 1988-06-09 1988-06-09 Pending JPH01179281U (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7676388U JPH01179281U (ja) 1988-06-09 1988-06-09

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7676388U JPH01179281U (ja) 1988-06-09 1988-06-09

Publications (1)

Publication Number Publication Date
JPH01179281U true JPH01179281U (ja) 1989-12-22

Family

ID=31301774

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7676388U Pending JPH01179281U (ja) 1988-06-09 1988-06-09

Country Status (1)

Country Link
JP (1) JPH01179281U (ja)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0464779U (ja) * 1990-10-16 1992-06-03
WO2020183634A1 (ja) * 2019-03-13 2020-09-17 三菱電機株式会社 接点部異常監視装置および接点部異常監視装置を用いる回路遮断器

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0464779U (ja) * 1990-10-16 1992-06-03
WO2020183634A1 (ja) * 2019-03-13 2020-09-17 三菱電機株式会社 接点部異常監視装置および接点部異常監視装置を用いる回路遮断器
JPWO2020183634A1 (ja) * 2019-03-13 2021-10-21 三菱電機株式会社 接点部異常監視装置および接点部異常監視装置を用いる回路遮断器

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