JPH0127643B2 - - Google Patents

Info

Publication number
JPH0127643B2
JPH0127643B2 JP56063830A JP6383081A JPH0127643B2 JP H0127643 B2 JPH0127643 B2 JP H0127643B2 JP 56063830 A JP56063830 A JP 56063830A JP 6383081 A JP6383081 A JP 6383081A JP H0127643 B2 JPH0127643 B2 JP H0127643B2
Authority
JP
Japan
Prior art keywords
relay
circuit
frequency
undervoltage
phase
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.)
Expired
Application number
JP56063830A
Other languages
English (en)
Japanese (ja)
Other versions
JPS57180318A (en
Inventor
Shichiro Tanaka
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.)
Toshiba Corp
Original Assignee
Tokyo Shibaura Electric Co 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 Tokyo Shibaura Electric Co Ltd filed Critical Tokyo Shibaura Electric Co Ltd
Priority to JP56063830A priority Critical patent/JPS57180318A/ja
Publication of JPS57180318A publication Critical patent/JPS57180318A/ja
Publication of JPH0127643B2 publication Critical patent/JPH0127643B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Emergency Protection Circuit Devices (AREA)
JP56063830A 1981-04-27 1981-04-27 Automatic inspection system for frequency protective relay unit Granted JPS57180318A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56063830A JPS57180318A (en) 1981-04-27 1981-04-27 Automatic inspection system for frequency protective relay unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56063830A JPS57180318A (en) 1981-04-27 1981-04-27 Automatic inspection system for frequency protective relay unit

Publications (2)

Publication Number Publication Date
JPS57180318A JPS57180318A (en) 1982-11-06
JPH0127643B2 true JPH0127643B2 (en]) 1989-05-30

Family

ID=13240656

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56063830A Granted JPS57180318A (en) 1981-04-27 1981-04-27 Automatic inspection system for frequency protective relay unit

Country Status (1)

Country Link
JP (1) JPS57180318A (en])

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5305028A (en) * 1990-04-24 1994-04-19 Hitoshi Okano Multifocal lens provided with progressive focal segment

Also Published As

Publication number Publication date
JPS57180318A (en) 1982-11-06

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