JPS54103526A - Electrical route insulation resistance supervising device - Google Patents

Electrical route insulation resistance supervising device

Info

Publication number
JPS54103526A
JPS54103526A JP1100178A JP1100178A JPS54103526A JP S54103526 A JPS54103526 A JP S54103526A JP 1100178 A JP1100178 A JP 1100178A JP 1100178 A JP1100178 A JP 1100178A JP S54103526 A JPS54103526 A JP S54103526A
Authority
JP
Japan
Prior art keywords
circuit
reset
switching circuit
signal
restored
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
JP1100178A
Other languages
Japanese (ja)
Inventor
Nobuo Tatemura
Hidenori Oda
Kiyomi Yamamoto
Kazuhiro Ishii
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
Mitsubishi Heavy Industries Ltd
Original Assignee
Mitsubishi Electric Corp
Mitsubishi Heavy Industries Ltd
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 Mitsubishi Electric Corp, Mitsubishi Heavy Industries Ltd filed Critical Mitsubishi Electric Corp
Priority to JP1100178A priority Critical patent/JPS54103526A/en
Publication of JPS54103526A publication Critical patent/JPS54103526A/en
Pending legal-status Critical Current

Links

Landscapes

  • Measurement Of Resistance Or Impedance (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Laying Of Electric Cables Or Lines Outside (AREA)

Abstract

PURPOSE: To make an automatic reset after an insulation being restored again even when a state of an electrical route deteriorates by providing an amplifier to amplify a detected signal, a comparator, s switching circuit and a reset circuit to reset automatically the switching circuit.
CONSTITUTION: When an insulation deterioration of an electrical route is restored a flowing direct current supervising current is decreased, a signal at both ends of a detecting resistor 6 is made small, a comparator 72 is reset if less than a determined value and a signal is not transmitted to a switching circuit 74. At this time if the switching circuit 74 is being "off" by a signal of a reset circuit 25, an entire circuit is reset automatically and an operation of an alarm 9 is also restored. Even if the switching circuit 74 is being "off" by a reset circuit 25, a comparator circuit 72 does not become to "off" if an insulation deterioration of the electrical route is not restored and as a signal is being transmitted to a switching circuit 74 through a time limitting circuit 73 a continuation of an insulation deterioration can be detected.
COPYRIGHT: (C)1979,JPO&Japio
JP1100178A 1978-02-02 1978-02-02 Electrical route insulation resistance supervising device Pending JPS54103526A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1100178A JPS54103526A (en) 1978-02-02 1978-02-02 Electrical route insulation resistance supervising device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1100178A JPS54103526A (en) 1978-02-02 1978-02-02 Electrical route insulation resistance supervising device

Publications (1)

Publication Number Publication Date
JPS54103526A true JPS54103526A (en) 1979-08-15

Family

ID=11765879

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1100178A Pending JPS54103526A (en) 1978-02-02 1978-02-02 Electrical route insulation resistance supervising device

Country Status (1)

Country Link
JP (1) JPS54103526A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0272621U (en) * 1988-11-18 1990-06-04
JPH0686449U (en) * 1993-04-08 1994-12-20 株式会社アクアデザインアマノ Carbon dioxide diffusing device in water tank for growing aquatic plants
JPH0718543U (en) * 1994-06-30 1995-04-04 株式会社アクアデザインアマノ Carbon dioxide diffusing device in water tank for growing aquatic plants

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0272621U (en) * 1988-11-18 1990-06-04
JPH0686449U (en) * 1993-04-08 1994-12-20 株式会社アクアデザインアマノ Carbon dioxide diffusing device in water tank for growing aquatic plants
JPH0718543U (en) * 1994-06-30 1995-04-04 株式会社アクアデザインアマノ Carbon dioxide diffusing device in water tank for growing aquatic plants

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