JPH0411477U - - Google Patents

Info

Publication number
JPH0411477U
JPH0411477U JP5291590U JP5291590U JPH0411477U JP H0411477 U JPH0411477 U JP H0411477U JP 5291590 U JP5291590 U JP 5291590U JP 5291590 U JP5291590 U JP 5291590U JP H0411477 U JPH0411477 U JP H0411477U
Authority
JP
Japan
Prior art keywords
phase
open
detection circuit
photocoupler
alternating current
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
JP5291590U
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 JP5291590U priority Critical patent/JPH0411477U/ja
Publication of JPH0411477U publication Critical patent/JPH0411477U/ja
Pending legal-status Critical Current

Links

Landscapes

  • Emergency Protection Circuit Devices (AREA)
  • Measurement Of Current Or Voltage (AREA)

Description

【図面の簡単な説明】
第1図は本考案に係る欠相検出回路の電気回路
図、第2図は同じく更に具体的な電気回路図であ
る。 2……欠相検出回路、3……欠相監視回路、2
1,22……フオトカプラ、23〜25……ダイ
オード、26,27……抵抗、31……欠相表示
用の発光素子、32……3端子スイツチ素子、3
3〜35……抵抗、36,37……ツエナーダイ
オード、38,39……コンデンサ。

Claims (1)

  1. 【実用新案登録請求の範囲】 (1) 多相交流の欠相を検出す欠相検出回路であ
    つて、 前記多相交流の相間に欠相検出用のフオトカプ
    ラを接続したこと を特徴とする欠相検出回路。 (2) 前記フオトカプラの出力を監視する欠相監
    視回路を有することを特徴とする請求項1に記載
    の欠相検出回路。
JP5291590U 1990-05-21 1990-05-21 Pending JPH0411477U (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5291590U JPH0411477U (ja) 1990-05-21 1990-05-21

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5291590U JPH0411477U (ja) 1990-05-21 1990-05-21

Publications (1)

Publication Number Publication Date
JPH0411477U true JPH0411477U (ja) 1992-01-30

Family

ID=31573635

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5291590U Pending JPH0411477U (ja) 1990-05-21 1990-05-21

Country Status (1)

Country Link
JP (1) JPH0411477U (ja)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001235504A (ja) * 2000-02-23 2001-08-31 Kawamura Electric Inc 漏電・欠相判別測定器
JP2011135752A (ja) * 2009-12-25 2011-07-07 Japan Aviation Electronics Industry Ltd 欠相検出回路および欠相検出方法

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001235504A (ja) * 2000-02-23 2001-08-31 Kawamura Electric Inc 漏電・欠相判別測定器
JP2011135752A (ja) * 2009-12-25 2011-07-07 Japan Aviation Electronics Industry Ltd 欠相検出回路および欠相検出方法

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