JPS58118838U - Ground fault detector for ungrounded circuits - Google Patents

Ground fault detector for ungrounded circuits

Info

Publication number
JPS58118838U
JPS58118838U JP1564182U JP1564182U JPS58118838U JP S58118838 U JPS58118838 U JP S58118838U JP 1564182 U JP1564182 U JP 1564182U JP 1564182 U JP1564182 U JP 1564182U JP S58118838 U JPS58118838 U JP S58118838U
Authority
JP
Japan
Prior art keywords
fault detector
ground fault
detection
resistor
secondary side
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
JP1564182U
Other languages
Japanese (ja)
Other versions
JPH0134519Y2 (en
Inventor
蓑輪　治
定 藤原
富岡　清志
Original Assignee
三菱電機株式会社
長谷川電機工業株式会社
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 三菱電機株式会社, 長谷川電機工業株式会社 filed Critical 三菱電機株式会社
Priority to JP1564182U priority Critical patent/JPS58118838U/en
Publication of JPS58118838U publication Critical patent/JPS58118838U/en
Application granted granted Critical
Publication of JPH0134519Y2 publication Critical patent/JPH0134519Y2/ja
Granted legal-status Critical Current

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  • Emergency Protection Circuit Devices (AREA)

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 drawings]

第１図は非接地回路用地絡検出器の従来例を示すブロッ
ク図、第２図ａはトランスの回路図、第２図すはトラン
スの構造を説明する側断面図、第３図は本考案−実施例
のブロック図である。 １・・・・・・主変圧器、９・・・・・・地絡検出器、
１０・・・・・・検出抵抗、１１・・・・・・電流制限
抵抗、１２・・・・・・検出回路、１８・・・・・・出
力リレー、１８ａ・・・・・・外部出力接点、１８ｂ・
・・・・・警報用接点、２１・・・・・・内部トラシス
、２３・・・・・・電源回路、Ｎ・・・・・・中性点、
Ｅ・・・・・・接地、Ｓｌ、　Ｓ２・・・・・・非接地
式電路、Ｃ２・・・・・・補償用コンデンサ。Fig. 1 is a block diagram showing a conventional example of a ground fault detector for non-grounded circuits, Fig. 2a is a circuit diagram of a transformer, Fig. 2 is a side sectional view explaining the structure of the transformer, and Fig. 3 is a diagram of the present invention. - is a block diagram of an embodiment; 1...Main transformer, 9...Ground fault detector,
10...Detection resistor, 11...Current limiting resistor, 12...Detection circuit, 18...Output relay, 18a...External output Contact, 18b・
...Alarm contact, 21...Internal transmission, 23...Power circuit, N...Neutral point,
E...Grounding, Sl, S2...Ungrounded electrical circuit, C2...Compensation capacitor.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 二次側非接地方式の、主変圧器の二次側中性点と大地間
に、高抵抗値を持つ電流制限抵抗と検出抵抗の直列回路
を接続し、検出抵抗両端の電圧を検出回路で検知して地
絡検出を行ない、−さらに検出′回路の駆動電源は前記
主変圧器の二次側に接続された内部トランスから供給す
るものにおいて、前記直列回路の高抵抗値を持つ電流制
限抵抗を検出抵抗に対して大地側に配置したことを特徴
とする非接地回路用地絡検出器。A series circuit consisting of a current limiting resistor with a high resistance value and a detection resistor is connected between the secondary side neutral point of a secondary side non-grounded main transformer and the ground, and the voltage across the detection resistor is detected by the detection circuit. - Furthermore, the drive power for the detection circuit is supplied from an internal transformer connected to the secondary side of the main transformer, and the series circuit includes a current limiting resistor having a high resistance value. A ground fault detector for a non-grounded circuit, characterized in that the detection resistor is placed on the ground side with respect to the detection resistor.
JP1564182U 1982-02-05 1982-02-05 Ground fault detector for ungrounded circuits Granted JPS58118838U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1564182U JPS58118838U (en) 1982-02-05 1982-02-05 Ground fault detector for ungrounded circuits

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1564182U JPS58118838U (en) 1982-02-05 1982-02-05 Ground fault detector for ungrounded circuits

Publications (2)

Publication Number Publication Date
JPS58118838U true JPS58118838U (en) 1983-08-13
JPH0134519Y2 JPH0134519Y2 (en) 1989-10-20

Family

ID=30028050

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1564182U Granted JPS58118838U (en) 1982-02-05 1982-02-05 Ground fault detector for ungrounded circuits

Country Status (1)

Country Link
JP (1) JPS58118838U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS622813A (en) * 1985-06-27 1987-01-08 川重防災工業株式会社 Insulation monitor
JP2023523985A (en) * 2020-04-28 2023-06-08 アイティーイー カンパニー リミテッド Apparatus, method and power distribution system for preventing electric shock and fire during electric leakage and ground fault

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52154056A (en) * 1976-06-17 1977-12-21 Nippon Steel Corp Supervisory unit for insulation deterioration of non-grounded wiring

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52154056A (en) * 1976-06-17 1977-12-21 Nippon Steel Corp Supervisory unit for insulation deterioration of non-grounded wiring

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS622813A (en) * 1985-06-27 1987-01-08 川重防災工業株式会社 Insulation monitor
JP2023523985A (en) * 2020-04-28 2023-06-08 アイティーイー カンパニー リミテッド Apparatus, method and power distribution system for preventing electric shock and fire during electric leakage and ground fault

Also Published As

Publication number Publication date
JPH0134519Y2 (en) 1989-10-20

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