JPS5637571A - Detection method for failed part of insulator of long length - Google Patents

Detection method for failed part of insulator of long length

Info

Publication number
JPS5637571A
JPS5637571A JP11307779A JP11307779A JPS5637571A JP S5637571 A JPS5637571 A JP S5637571A JP 11307779 A JP11307779 A JP 11307779A JP 11307779 A JP11307779 A JP 11307779A JP S5637571 A JPS5637571 A JP S5637571A
Authority
JP
Japan
Prior art keywords
voltages
insulator
failed part
detection method
long length
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
JP11307779A
Other languages
Japanese (ja)
Other versions
JPS6058825B2 (en
Inventor
Keizo Abe
Shigemi Ozawa
Katsumi Kashiwazaki
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 Cable Ltd
Original Assignee
Hitachi Cable 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 Cable Ltd filed Critical Hitachi Cable Ltd
Priority to JP11307779A priority Critical patent/JPS6058825B2/en
Publication of JPS5637571A publication Critical patent/JPS5637571A/en
Publication of JPS6058825B2 publication Critical patent/JPS6058825B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Testing Relating To Insulation (AREA)
  • Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)

Abstract

PURPOSE: To improve the workability, by performing the detection of failed part for long insulator through the relative change between the primary voltage and primary current of the transformer.
CONSTITUTION: The voltage E produced at the secondary of the transformer Tr2 is fed to the wire and cable 1 in running state lengthwise. The voltages Es and Eo appeared across the full wave rectifying stacks Rec1 and Rec2 are measured at the comparator and the relative relation between both the voltages Es and Eo is all informed to the relay. This relay is operated when the relative change between both the voltages Es and Eo is taken place and it is informed to the measuring personnel via the alarm unit.
COPYRIGHT: (C)1981,JPO&Japio
JP11307779A 1979-09-04 1979-09-04 Method for detecting abnormalities in long insulators Expired JPS6058825B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11307779A JPS6058825B2 (en) 1979-09-04 1979-09-04 Method for detecting abnormalities in long insulators

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11307779A JPS6058825B2 (en) 1979-09-04 1979-09-04 Method for detecting abnormalities in long insulators

Publications (2)

Publication Number Publication Date
JPS5637571A true JPS5637571A (en) 1981-04-11
JPS6058825B2 JPS6058825B2 (en) 1985-12-21

Family

ID=14602888

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11307779A Expired JPS6058825B2 (en) 1979-09-04 1979-09-04 Method for detecting abnormalities in long insulators

Country Status (1)

Country Link
JP (1) JPS6058825B2 (en)

Also Published As

Publication number Publication date
JPS6058825B2 (en) 1985-12-21

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