JPS51113132A - System for detecting disconnection trouble - Google Patents

System for detecting disconnection trouble

Info

Publication number
JPS51113132A
JPS51113132A JP3843775A JP3843775A JPS51113132A JP S51113132 A JPS51113132 A JP S51113132A JP 3843775 A JP3843775 A JP 3843775A JP 3843775 A JP3843775 A JP 3843775A JP S51113132 A JPS51113132 A JP S51113132A
Authority
JP
Japan
Prior art keywords
detecting disconnection
disconnection trouble
disconnection
zero phase
trouble
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.)
Granted
Application number
JP3843775A
Other languages
English (en)
Japanese (ja)
Other versions
JPS5640575B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html
Inventor
Hideo Miura
Mitsuaki Aida
Atsuhiro Yoshizaki
Mitsuo Watai
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
Takamatsu Electric Works Ltd
Original Assignee
Hitachi Ltd
Takamatsu Electric Works 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, Takamatsu Electric Works Ltd filed Critical Hitachi Ltd
Priority to JP3843775A priority Critical patent/JPS51113132A/ja
Publication of JPS51113132A publication Critical patent/JPS51113132A/ja
Publication of JPS5640575B2 publication Critical patent/JPS5640575B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Emergency Protection Circuit Devices (AREA)
JP3843775A 1975-03-28 1975-03-28 System for detecting disconnection trouble Granted JPS51113132A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3843775A JPS51113132A (en) 1975-03-28 1975-03-28 System for detecting disconnection trouble

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3843775A JPS51113132A (en) 1975-03-28 1975-03-28 System for detecting disconnection trouble

Publications (2)

Publication Number Publication Date
JPS51113132A true JPS51113132A (en) 1976-10-06
JPS5640575B2 JPS5640575B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1981-09-21

Family

ID=12525272

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3843775A Granted JPS51113132A (en) 1975-03-28 1975-03-28 System for detecting disconnection trouble

Country Status (1)

Country Link
JP (1) JPS51113132A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54120843A (en) * 1978-03-11 1979-09-19 Toko Seiki Kk Disconnection detecting and protecting system of nonnground power distribution line

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4412741Y1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * 1964-09-30 1969-05-27
JPS5016844A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * 1973-06-21 1975-02-21

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4412741Y1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * 1964-09-30 1969-05-27
JPS5016844A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * 1973-06-21 1975-02-21

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54120843A (en) * 1978-03-11 1979-09-19 Toko Seiki Kk Disconnection detecting and protecting system of nonnground power distribution line

Also Published As

Publication number Publication date
JPS5640575B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1981-09-21

Similar Documents

Publication Publication Date Title
JPS51113132A (en) System for detecting disconnection trouble
JPS51113131A (en) Method of detecting disconnection trouble
JPS51121154A (en) Disconnection detection system for d-c transmission line
JPS5366548A (en) Grounding fault detector for dc circuit
JPS5471347A (en) State detector
JPS51136254A (en) Fault detection
JPS5217041A (en) System for detecting a point on a transmission line where an abnormal state occurs
JPS51122739A (en) System for grounding disconnection detection impedance
JPS5217643A (en) 1 line grounding accident detecting relay apparatus
JPS51133740A (en) Disconnection detection system
JPS51130839A (en) Method for detecting trouble of electric insulation
JPS5357490A (en) Trouble detecting system for electric appliances
JPS51130840A (en) Method for detecting electric insulation leakage
JPS5268938A (en) One line earth ground trouble detecting relay
JPS5376340A (en) Abnormal current detecting for electrical lines
JPS52140842A (en) Defectiveness detecting system for differential protection relay system
JPS5344850A (en) Earthing direction relay
JPS5333342A (en) Discharge detector for electrical equipment
JPS5246459A (en) Protecting device of neutral conductor grounding detection
JPS5325844A (en) Nonnground fault disconnection trouble detection system for high voltage distribution lines
JPS52140843A (en) System for supervising current differential bus bar protection relay suppressing circuit
JPS52124148A (en) Condition detector for electric parts
JPS5330756A (en) Protection system for dc transmission line
JPS5220247A (en) Converter circuit protective relay means
JPS547139A (en) Shortcircuit fault detector for electric mchinery