JPS5655873A - Detecting device for abnormal current - Google Patents

Detecting device for abnormal current

Info

Publication number
JPS5655873A
JPS5655873A JP13267079A JP13267079A JPS5655873A JP S5655873 A JPS5655873 A JP S5655873A JP 13267079 A JP13267079 A JP 13267079A JP 13267079 A JP13267079 A JP 13267079A JP S5655873 A JPS5655873 A JP S5655873A
Authority
JP
Japan
Prior art keywords
supporting rod
abnormal current
ceramic insulator
transformer
detecting
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
JP13267079A
Other languages
Japanese (ja)
Other versions
JPS6239393B2 (en
Inventor
Naotoshi Takaoka
Isamu Eguchi
Mitsuharu Hisatomi
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.)
Takamatsu Electric Works Ltd
Original Assignee
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 Takamatsu Electric Works Ltd filed Critical Takamatsu Electric Works Ltd
Priority to JP13267079A priority Critical patent/JPS5655873A/en
Publication of JPS5655873A publication Critical patent/JPS5655873A/en
Publication of JPS6239393B2 publication Critical patent/JPS6239393B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
  • Testing Relating To Insulation (AREA)
  • Locating Faults (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Insulators (AREA)

Abstract

PURPOSE: To dispense with a transformer and the like, to make the size of a ceramic insulator smaller, and to increase the reliability thereof by detecting the abnormal current in a conductor which the current passes by means of a magnetic resistance element built in the ceramic insulator.
CONSTITUTION: In the hollow part 1a of the insulator 1 whose upper end part supports a power line 2 is fixed a supporting rod 5 made of an organic insulation material and further in the inside end of the supporting rod 5 is provided a detecting element 3, whose lead wires 6aW6d are led putside through the inside of the supporting rod 5. In addition, the detecting element 3 is formed of the magnetic resistance element 7 and resistances R3 and R4 without a bridge circuit and at the output end 9 thereof a detection signal is generated. Accordingly, when the abnormal current flows through the power line 2 owing to the short-circuit and the like, the balance of the bridge circuit is broken by the magnetic field of the element 3 and thus the abnormality can be detected, while the size of the ceramic insulator can be reduced substantially since the detection is conducted without using the transformer and the like.
COPYRIGHT: (C)1981,JPO&Japio
JP13267079A 1979-10-15 1979-10-15 Detecting device for abnormal current Granted JPS5655873A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13267079A JPS5655873A (en) 1979-10-15 1979-10-15 Detecting device for abnormal current

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13267079A JPS5655873A (en) 1979-10-15 1979-10-15 Detecting device for abnormal current

Publications (2)

Publication Number Publication Date
JPS5655873A true JPS5655873A (en) 1981-05-16
JPS6239393B2 JPS6239393B2 (en) 1987-08-22

Family

ID=15086745

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13267079A Granted JPS5655873A (en) 1979-10-15 1979-10-15 Detecting device for abnormal current

Country Status (1)

Country Link
JP (1) JPS5655873A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61142331U (en) * 1985-02-25 1986-09-03
JPS61157208U (en) * 1985-03-20 1986-09-29
JPH0285775A (en) * 1988-09-21 1990-03-27 Ngk Insulators Ltd Device for detecting faulty point of transmission line

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0586705U (en) * 1992-04-27 1993-11-22 日産ディーゼル工業株式会社 Structure of vehicle speaker box

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61142331U (en) * 1985-02-25 1986-09-03
JPS61157208U (en) * 1985-03-20 1986-09-29
JPH0439606Y2 (en) * 1985-03-20 1992-09-17
JPH0285775A (en) * 1988-09-21 1990-03-27 Ngk Insulators Ltd Device for detecting faulty point of transmission line

Also Published As

Publication number Publication date
JPS6239393B2 (en) 1987-08-22

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