JPS53147251A - Automatic inspection system - Google Patents

Automatic inspection system

Info

Publication number
JPS53147251A
JPS53147251A JP6120477A JP6120477A JPS53147251A JP S53147251 A JPS53147251 A JP S53147251A JP 6120477 A JP6120477 A JP 6120477A JP 6120477 A JP6120477 A JP 6120477A JP S53147251 A JPS53147251 A JP S53147251A
Authority
JP
Japan
Prior art keywords
inspection system
automatic inspection
current range
amplitude
making
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
JP6120477A
Other languages
Japanese (ja)
Inventor
Seishi Nomura
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.)
Hitachi Ltd
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 JP6120477A priority Critical patent/JPS53147251A/en
Publication of JPS53147251A publication Critical patent/JPS53147251A/en
Pending legal-status Critical Current

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  • Emergency Protection Circuit Devices (AREA)

Abstract

PURPOSE: To make a wider applicability by making an amplitude of an inspection input variable and by performing periodical inspections under simple response at either small current range or large current range of a relay characteristic as necessary.
COPYRIGHT: (C)1978,JPO&Japio
JP6120477A 1977-05-27 1977-05-27 Automatic inspection system Pending JPS53147251A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6120477A JPS53147251A (en) 1977-05-27 1977-05-27 Automatic inspection system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6120477A JPS53147251A (en) 1977-05-27 1977-05-27 Automatic inspection system

Publications (1)

Publication Number Publication Date
JPS53147251A true JPS53147251A (en) 1978-12-21

Family

ID=13164413

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6120477A Pending JPS53147251A (en) 1977-05-27 1977-05-27 Automatic inspection system

Country Status (1)

Country Link
JP (1) JPS53147251A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59122313A (en) * 1982-12-27 1984-07-14 株式会社明電舎 Analog input unit inspecting circuit for protecting relay

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51121157A (en) * 1975-04-16 1976-10-22 Hitachi Ltd Automatic inspection system for frequency modulation difference curren t carrier relay

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51121157A (en) * 1975-04-16 1976-10-22 Hitachi Ltd Automatic inspection system for frequency modulation difference curren t carrier relay

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59122313A (en) * 1982-12-27 1984-07-14 株式会社明電舎 Analog input unit inspecting circuit for protecting relay
JPH0348726B2 (en) * 1982-12-27 1991-07-25 Meidensha Electric Mfg Co Ltd

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