JPS5341971A - Fault detector of electromagnetic device - Google Patents

Fault detector of electromagnetic device

Info

Publication number
JPS5341971A
JPS5341971A JP11576276A JP11576276A JPS5341971A JP S5341971 A JPS5341971 A JP S5341971A JP 11576276 A JP11576276 A JP 11576276A JP 11576276 A JP11576276 A JP 11576276A JP S5341971 A JPS5341971 A JP S5341971A
Authority
JP
Japan
Prior art keywords
electromagnetic
fault detector
fault
thevariation
inductance
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
JP11576276A
Other languages
Japanese (ja)
Other versions
JPS6215982B2 (en
Inventor
Tetsuo Ito
Takao Sato
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP51115762A priority Critical patent/JPS6215982B2/ja
Publication of JPS5341971A publication Critical patent/JPS5341971A/en
Publication of JPS6215982B2 publication Critical patent/JPS6215982B2/ja
Expired legal-status Critical Current

Links

Abstract

PURPOSE: To detect the fault of electromagnetic devices surely under a simple constitution by detecting the inductance of a exciting coil or thevariation of a current.
COPYRIGHT: (C)1978,JPO&Japio
JP51115762A 1976-09-29 1976-09-29 Expired JPS6215982B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP51115762A JPS6215982B2 (en) 1976-09-29 1976-09-29

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP51115762A JPS6215982B2 (en) 1976-09-29 1976-09-29

Publications (2)

Publication Number Publication Date
JPS5341971A true JPS5341971A (en) 1978-04-15
JPS6215982B2 JPS6215982B2 (en) 1987-04-10

Family

ID=14670404

Family Applications (1)

Application Number Title Priority Date Filing Date
JP51115762A Expired JPS6215982B2 (en) 1976-09-29 1976-09-29

Country Status (1)

Country Link
JP (1) JPS6215982B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05290704A (en) * 1992-02-25 1993-11-05 Internatl Business Mach Corp <Ibm> Electromagnetic contactor
JP2014049208A (en) * 2012-08-29 2014-03-17 Fuji Electric Co Ltd Electromagnetic contactor
JP2014154487A (en) * 2013-02-13 2014-08-25 Nippon Soken Inc Contact fusion detecting system of relay

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4895166A (en) * 1972-03-14 1973-12-06
JPS4935867A (en) * 1972-08-09 1974-04-03

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4895166A (en) * 1972-03-14 1973-12-06
JPS4935867A (en) * 1972-08-09 1974-04-03

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05290704A (en) * 1992-02-25 1993-11-05 Internatl Business Mach Corp <Ibm> Electromagnetic contactor
JP2014049208A (en) * 2012-08-29 2014-03-17 Fuji Electric Co Ltd Electromagnetic contactor
JP2014154487A (en) * 2013-02-13 2014-08-25 Nippon Soken Inc Contact fusion detecting system of relay

Also Published As

Publication number Publication date
JPS6215982B2 (en) 1987-04-10

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