JPS60174425U - Three-phase power supply abnormality detection device - Google Patents

Three-phase power supply abnormality detection device

Info

Publication number
JPS60174425U
JPS60174425U JP4967584U JP4967584U JPS60174425U JP S60174425 U JPS60174425 U JP S60174425U JP 4967584 U JP4967584 U JP 4967584U JP 4967584 U JP4967584 U JP 4967584U JP S60174425 U JPS60174425 U JP S60174425U
Authority
JP
Japan
Prior art keywords
power supply
phase power
circuit
abnormality detection
transformer
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
JP4967584U
Other languages
Japanese (ja)
Other versions
JPH0623159Y2 (en
Inventor
孝之 鹿島
常夫 品田
山中　善文
瀬戸口　利喜雄
Original Assignee
日立精工株式会社
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 日立精工株式会社 filed Critical 日立精工株式会社
Priority to JP1984049675U priority Critical patent/JPH0623159Y2/en
Publication of JPS60174425U publication Critical patent/JPS60174425U/en
Application granted granted Critical
Publication of JPH0623159Y2 publication Critical patent/JPH0623159Y2/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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) [Abstract] 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 drawings]

図面は本考案の一実施例を示すブロック図である。 １・・・三相電源、２，５・・・整流回路、３・・・イ
ンバータ、１１・・・起動停止回路、１２・・・第１の
変圧　　　　器、１３・・・安定化回路、１４−・・・
第２の変圧器、１５・・・ダイオード、１６・・・コン
デンサ、１７．１８．１９．２０・・・抵抗器、２１・
・・第１の比較回路、２２．２３・・・抵抗器、２４・
・・第２の比較回路、２５・・・異常検出回路。The drawing is a block diagram showing an embodiment of the present invention. DESCRIPTION OF SYMBOLS 1... Three-phase power supply, 2, 5... Rectifier circuit, 3... Inverter, 11... Start/stop circuit, 12... First transformer, 13... Stabilization circuit, 14 −・・・
2nd transformer, 15... diode, 16... capacitor, 17.18.19.20... resistor, 21...
...First comparison circuit, 22.23...Resistor, 24.
...Second comparison circuit, 25...Anomaly detection circuit.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 三相電源の１つの相間に接続された第１の変圧器と、こ
の変圧器の二次側出力をレベルの異なる複数の基準電圧
に変換する安定化回路と、上記三相電源の他の相間に接
続された第２の変圧器と、この変圧器の二次側を上記基
準電圧に対応する比較電圧に変換する変換回路と、この
変換回路からの比較電圧を上記安定化回路からの高レベ
ルの基準電圧と比較する第１の比較回路と、上記変換回
路からの比較電圧を上記安定化回路からの低レベルの基
準電圧と比較する第２の比較回路と、上記第１の比較回
路及び第２の比較回路の出力を判別し上記三相電源の異
常を判別する異常検出回路を有することを特徴とする三
相電源の異常検出装置。A first transformer connected between one phase of the three-phase power supply, a stabilization circuit that converts the secondary output of this transformer into a plurality of reference voltages of different levels, and a first transformer connected between the other phases of the three-phase power supply. a second transformer connected to the transformer, a conversion circuit for converting the secondary side of the transformer into a comparison voltage corresponding to the reference voltage, and a conversion circuit for converting the comparison voltage from the conversion circuit into a high level voltage from the stabilization circuit. a first comparator circuit that compares the comparison voltage from the conversion circuit with a reference voltage of a low level from the stabilization circuit; An abnormality detection device for a three-phase power supply, comprising an abnormality detection circuit that discriminates the output of the second comparison circuit to determine an abnormality in the three-phase power supply.
JP1984049675U 1984-04-06 1984-04-06 Abnormality detection device for three-phase power supply Expired - Lifetime JPH0623159Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1984049675U JPH0623159Y2 (en) 1984-04-06 1984-04-06 Abnormality detection device for three-phase power supply

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1984049675U JPH0623159Y2 (en) 1984-04-06 1984-04-06 Abnormality detection device for three-phase power supply

Publications (2)

Publication Number Publication Date
JPS60174425U true JPS60174425U (en) 1985-11-19
JPH0623159Y2 JPH0623159Y2 (en) 1994-06-15

Family

ID=30567087

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1984049675U Expired - Lifetime JPH0623159Y2 (en) 1984-04-06 1984-04-06 Abnormality detection device for three-phase power supply

Country Status (1)

Country Link
JP (1) JPH0623159Y2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2020124093A (en) * 2019-01-31 2020-08-13 ブラザー工業株式会社 Voltage anomaly detection device and drive device

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58156864A (en) * 1982-03-15 1983-09-17 Matsushita Electric Works Ltd Detecting circuit for opposite phase and open phase

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58156864A (en) * 1982-03-15 1983-09-17 Matsushita Electric Works Ltd Detecting circuit for opposite phase and open phase

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2020124093A (en) * 2019-01-31 2020-08-13 ブラザー工業株式会社 Voltage anomaly detection device and drive device

Also Published As

Publication number Publication date
JPH0623159Y2 (en) 1994-06-15

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