JPS52154056A - Supervisory unit for insulation deterioration of non-grounded wiring - Google Patents

Supervisory unit for insulation deterioration of non-grounded wiring

Info

Publication number
JPS52154056A
JPS52154056A JP7157876A JP7157876A JPS52154056A JP S52154056 A JPS52154056 A JP S52154056A JP 7157876 A JP7157876 A JP 7157876A JP 7157876 A JP7157876 A JP 7157876A JP S52154056 A JPS52154056 A JP S52154056A
Authority
JP
Japan
Prior art keywords
insulation deterioration
supervisory unit
grounded wiring
insulation
deteriorated
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
JP7157876A
Other languages
Japanese (ja)
Inventor
Junichi Takanabe
Sadao Sekine
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.)
Nippon Steel Corp
Nittetsu Densetsu Kogyo KK
Original Assignee
Nippon Steel Corp
Nittetsu Densetsu Kogyo KK
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 Nippon Steel Corp, Nittetsu Densetsu Kogyo KK filed Critical Nippon Steel Corp
Priority to JP7157876A priority Critical patent/JPS52154056A/en
Publication of JPS52154056A publication Critical patent/JPS52154056A/en
Pending legal-status Critical Current

Links

Landscapes

  • Emergency Protection Circuit Devices (AREA)

Abstract

PURPOSE: To eliminate a hazard caused by a deteriorated insulation, by making a detection with a sensitivity almost equal to or higher than that as in a case of only one line being deteriorated, even for a case that a deterioration is caused in both of the two lines of bus under a condition with the insulation resistance balanced in the same value.
COPYRIGHT: (C)1977,JPO&Japio
JP7157876A 1976-06-17 1976-06-17 Supervisory unit for insulation deterioration of non-grounded wiring Pending JPS52154056A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7157876A JPS52154056A (en) 1976-06-17 1976-06-17 Supervisory unit for insulation deterioration of non-grounded wiring

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7157876A JPS52154056A (en) 1976-06-17 1976-06-17 Supervisory unit for insulation deterioration of non-grounded wiring

Publications (1)

Publication Number Publication Date
JPS52154056A true JPS52154056A (en) 1977-12-21

Family

ID=13464710

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7157876A Pending JPS52154056A (en) 1976-06-17 1976-06-17 Supervisory unit for insulation deterioration of non-grounded wiring

Country Status (1)

Country Link
JP (1) JPS52154056A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58118838U (en) * 1982-02-05 1983-08-13 三菱電機株式会社 Ground fault detector for ungrounded circuits

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58118838U (en) * 1982-02-05 1983-08-13 三菱電機株式会社 Ground fault detector for ungrounded circuits
JPH0134519Y2 (en) * 1982-02-05 1989-10-20

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