JPH0117538B2 - - Google Patents

Info

Publication number
JPH0117538B2
JPH0117538B2 JP56129637A JP12963781A JPH0117538B2 JP H0117538 B2 JPH0117538 B2 JP H0117538B2 JP 56129637 A JP56129637 A JP 56129637A JP 12963781 A JP12963781 A JP 12963781A JP H0117538 B2 JPH0117538 B2 JP H0117538B2
Authority
JP
Japan
Prior art keywords
current
failure
circuit
transmitting
zero
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
JP56129637A
Other languages
English (en)
Japanese (ja)
Other versions
JPS5832161A (ja
Inventor
Katsuhiro Kawashima
Shoji Murota
Satoru Inoe
Akiro Sanemori
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.)
Mitsubishi Electric Corp
Nippon Steel Corp
Original Assignee
Mitsubishi Electric Corp
Nippon Steel Corp
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 Mitsubishi Electric Corp, Nippon Steel Corp filed Critical Mitsubishi Electric Corp
Priority to JP56129637A priority Critical patent/JPS5832161A/ja
Publication of JPS5832161A publication Critical patent/JPS5832161A/ja
Publication of JPH0117538B2 publication Critical patent/JPH0117538B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/22—Details, e.g. general constructional or apparatus details
    • G01N29/24—Probes
    • G01N29/2412—Probes using the magnetostrictive properties of the material to be examined, e.g. electromagnetic acoustic transducers [EMAT]

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
JP56129637A 1981-08-19 1981-08-19 電磁超音波探傷装置 Granted JPS5832161A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56129637A JPS5832161A (ja) 1981-08-19 1981-08-19 電磁超音波探傷装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56129637A JPS5832161A (ja) 1981-08-19 1981-08-19 電磁超音波探傷装置

Publications (2)

Publication Number Publication Date
JPS5832161A JPS5832161A (ja) 1983-02-25
JPH0117538B2 true JPH0117538B2 (enrdf_load_stackoverflow) 1989-03-30

Family

ID=15014419

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56129637A Granted JPS5832161A (ja) 1981-08-19 1981-08-19 電磁超音波探傷装置

Country Status (1)

Country Link
JP (1) JPS5832161A (enrdf_load_stackoverflow)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0945725A1 (en) * 1996-12-10 1999-09-29 Hitachi Construction Machinery Co., Ltd. Ultrasonic tester and system for its management

Also Published As

Publication number Publication date
JPS5832161A (ja) 1983-02-25

Similar Documents

Publication Publication Date Title
US5132629A (en) Apparatus for testing the insulation of an electrical conductor passing through an electrode
US8098072B2 (en) Partial discharge coupler for application on high voltage generator bus works
CN106950450B (zh) 继电保护装置二次回路故障的预警方法和设备
AU4358299A (en) Method and device for monitoring an electrode line of a bipolar high voltage direct current (hvdc) transmission system
JPH0117538B2 (enrdf_load_stackoverflow)
JP2002062330A (ja) コイルターン間絶縁健全性評価装置及び方法
JP3172626B2 (ja) 高圧機器の部分放電検出方法
CN118871314A (zh) 在考虑充电站侧的过压保护措施的情况下的经监测的充电方法
CN2101252U (zh) 一种线路故障的检测报警装置
JP4467991B2 (ja) ケーブル混触検知装置
CN100524999C (zh) 一种电力试验取样保护单元
JPH06317625A (ja) 変圧器の運転中における部分放電検知装置
CN114878984B (zh) 绝缘测试装置、绝缘测试方法
JP2564956B2 (ja) 部分放電測定方法
JPH06201755A (ja) 部分放電検出装置
JP2836623B2 (ja) 受変電設備の絶縁診断装置
JP2742636B2 (ja) 電力ケーブルの絶縁劣化診断法
JPH08170975A (ja) 電機機器の部分放電検出回路
KR20230155365A (ko) 리던던트 전기 전송 경로를 갖는 전기 장치와 그 오류 상태를 검출하기 위한 수단, 및 전기 장치의 리던던트 전기 전송 경로의 오류 상태를 검출하기 위한 방법
JPS6212878A (ja) 一点接地系システムの地絡、短絡監視方式
SU951179A1 (ru) Устройство дл селективного контрол сопротивлени изол ции электрических систем
JPH02309269A (ja) 部分放電測定装置
CN117310357A (zh) 一种直流电缆故障检测与测距方法
JPS6291868A (ja) 電気機器の絶縁劣化診断法
JPH0279750A (ja) 電気機器の絶縁診断方法