JPS60190136U - Open phase detection circuit - Google Patents

Open phase detection circuit

Info

Publication number
JPS60190136U
JPS60190136U JP7783484U JP7783484U JPS60190136U JP S60190136 U JPS60190136 U JP S60190136U JP 7783484 U JP7783484 U JP 7783484U JP 7783484 U JP7783484 U JP 7783484U JP S60190136 U JPS60190136 U JP S60190136U
Authority
JP
Japan
Prior art keywords
detection circuit
current
phase detection
circuit
phase
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
JP7783484U
Other languages
Japanese (ja)
Inventor
村重　伸一
武 山田
Original Assignee
オムロン株式会社
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 オムロン株式会社 filed Critical オムロン株式会社
Priority to JP7783484U priority Critical patent/JPS60190136U/en
Publication of JPS60190136U publication Critical patent/JPS60190136U/en
Pending legal-status Critical Current

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Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は従来例のブロック図であり、第２図はこの考案
のブロック図であり、第３図ａ、ｂは変流器の出力を整
流、電圧変換した後の波形を正常時と欠相時について示
し、第４図はＰＬＬ回路の選択特性を示している。 １・・・変流器、２・・・３相全波整流回路、３・・・
変換回路、４・・・バンドパスフィルター、５・・・比
較回路、６・・・ＰＬＬ回路。Figure 1 is a block diagram of the conventional example, Figure 2 is a block diagram of this invention, and Figures 3a and 3b show the waveforms after rectifying the output of the current transformer and converting the voltage. FIG. 4 shows the selection characteristics of the PLL circuit. 1...Current transformer, 2...3-phase full-wave rectifier circuit, 3...
Conversion circuit, 4... Band pass filter, 5... Comparison circuit, 6... PLL circuit.

Claims (1)

【実用新案登録請求の範囲】 ３相電源に接続された負荷の電流を検出する変流器と、 変流器の２次電流を整流する３相全波整流回路と、 電流を電圧に変換する変換回路と、 変換回路の出力を入力とするフェイズロックドループ回
路とよりなることを特徴とする欠相検出回路。[Claims for Utility Model Registration] A current transformer that detects the current of a load connected to a 3-phase power supply, a 3-phase full-wave rectifier circuit that rectifies the secondary current of the current transformer, and a 3-phase full-wave rectifier circuit that converts the current into voltage. An open phase detection circuit comprising a conversion circuit and a phase-locked loop circuit whose input is the output of the conversion circuit.
JP7783484U 1984-05-25 1984-05-25 Open phase detection circuit Pending JPS60190136U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7783484U JPS60190136U (en) 1984-05-25 1984-05-25 Open phase detection circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7783484U JPS60190136U (en) 1984-05-25 1984-05-25 Open phase detection circuit

Publications (1)

Publication Number Publication Date
JPS60190136U true JPS60190136U (en) 1985-12-17

Family

ID=30621260

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7783484U Pending JPS60190136U (en) 1984-05-25 1984-05-25 Open phase detection circuit

Country Status (1)

Country Link
JP (1) JPS60190136U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2018028501A (en) * 2016-08-19 2018-02-22 株式会社東芝 Open-phase detection system, open-phase detector and open-phase detection method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2018028501A (en) * 2016-08-19 2018-02-22 株式会社東芝 Open-phase detection system, open-phase detector and open-phase detection method
WO2018034260A1 (en) * 2016-08-19 2018-02-22 株式会社 東芝 Open phase detecting system, open phase detecting device and open phase detecting method

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