FR2402877B1 - - Google Patents

Info

Publication number
FR2402877B1
FR2402877B1 FR7834375A FR7834375A FR2402877B1 FR 2402877 B1 FR2402877 B1 FR 2402877B1 FR 7834375 A FR7834375 A FR 7834375A FR 7834375 A FR7834375 A FR 7834375A FR 2402877 B1 FR2402877 B1 FR 2402877B1
Authority
FR
France
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
FR7834375A
Other versions
FR2402877A1 (en
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.)
CBS Corp
Original Assignee
Westinghouse Electric 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
Priority claimed from US05/858,054 external-priority patent/US4158169A/en
Priority claimed from US05/858,034 external-priority patent/US4158168A/en
Application filed by Westinghouse Electric Corp filed Critical Westinghouse Electric Corp
Publication of FR2402877A1 publication Critical patent/FR2402877A1/fr
Application granted granted Critical
Publication of FR2402877B1 publication Critical patent/FR2402877B1/fr
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/04—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for transformers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/40—Structural association with built-in electric component, e.g. fuse
    • H01F27/402—Association of measuring or protective means
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
    • G01R31/1209—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing using acoustic measurements
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/40—Structural association with built-in electric component, e.g. fuse
    • H01F27/402—Association of measuring or protective means
    • H01F2027/404—Protective devices specially adapted for fluid filled transformers

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Testing Relating To Insulation (AREA)
  • Gas-Insulated Switchgears (AREA)
  • Protection Of Transformers (AREA)
  • Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
  • Elimination Of Static Electricity (AREA)
  • Electrostatic Separation (AREA)
FR7834375A 1977-12-06 1978-12-06 Detector and locator for electrical discharges - uses acoustic waveguides connected to piezoceramic element in inductive enclosed windings Granted FR2402877A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US05/858,054 US4158169A (en) 1977-12-06 1977-12-06 Corona testing apparatus including acoustic waveguides for transmitting acoustic emissions from electrical apparatus
US05/858,034 US4158168A (en) 1977-12-06 1977-12-06 Acoustic waveguides for sensing and locating corona discharges

Publications (2)

Publication Number Publication Date
FR2402877A1 FR2402877A1 (en) 1979-04-06
FR2402877B1 true FR2402877B1 (fr) 1984-03-02

Family

ID=27127438

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7834375A Granted FR2402877A1 (en) 1977-12-06 1978-12-06 Detector and locator for electrical discharges - uses acoustic waveguides connected to piezoceramic element in inductive enclosed windings

Country Status (6)

Country Link
JP (1) JPS5857056B2 (fr)
KR (1) KR820001828B1 (fr)
BE (1) BE872510A (fr)
ES (1) ES475710A1 (fr)
FR (1) FR2402877A1 (fr)
NO (1) NO158157C (fr)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6038458U (ja) * 1983-08-24 1985-03-16 三菱電機株式会社 回路しや断器
JPS6039550U (ja) * 1983-08-25 1985-03-19 三菱電機株式会社 回路しや断器
JPS60107232A (ja) * 1983-11-15 1985-06-12 三菱電機株式会社 回路しや断器
JPS60119052A (ja) * 1983-11-30 1985-06-26 三菱電機株式会社 回路開閉器用補助接点装置
JPH0142923Y2 (fr) * 1984-09-25 1989-12-14
JPS6175047U (fr) * 1984-10-23 1986-05-21
JPS6237865U (fr) * 1985-08-27 1987-03-06
JPH0430757Y2 (fr) * 1987-03-28 1992-07-24
NL1005721C2 (nl) * 1997-04-03 1998-10-07 Kema Nv Werkwijze en inrichting voor het detecteren van partiële ontladingen.
FR2786274B1 (fr) 1998-11-25 2000-12-29 Alstom Technology Procede et dispositif de detection d'un arc interne dans une liaison electrique sous enveloppe metallique
JP2012154753A (ja) * 2011-01-26 2012-08-16 Mitsubishi Electric Corp 放電発生位置推定装置及び放電発生位置推定装置を備えた静止誘導器

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2402544A (en) * 1943-03-15 1946-06-25 Pacific Electric Mfg Corp High voltage current indicating and insulating means
US3331023A (en) * 1964-03-09 1967-07-11 Sigma Instruments Inc Sensing and measuring device for high voltage power lines
JPS4317445Y1 (fr) * 1966-04-04 1968-07-19
US3597683A (en) * 1970-04-24 1971-08-03 Shigebumi Saito Current transformer utilizing an electromagnetic wave, a faraday rotator, circular waveguides, horn antennae, and mode converters to measure current in a high voltage transmission line
CA933646A (en) * 1970-06-16 1973-09-11 Canadian General Electric Company Limited Ultrasonic leak detection
US3728619A (en) * 1971-06-21 1973-04-17 Westinghouse Electric Corp Acoustical corona locator having rotatable and pivotable transducers
US3777189A (en) * 1972-05-04 1973-12-04 Westinghouse Electric Corp Acoustic energy transmission device
US3936348A (en) * 1973-02-05 1976-02-03 Wesley M. Rohrer Method and apparatus for detection of nuclear fuel rod failures

Also Published As

Publication number Publication date
NO784052L (no) 1979-06-07
ES475710A1 (es) 1980-03-01
NO158157C (no) 1988-07-20
JPS5857056B2 (ja) 1983-12-17
NO158157B (no) 1988-04-11
BE872510A (fr) 1979-06-05
FR2402877A1 (en) 1979-04-06
JPS5490545A (en) 1979-07-18
KR820001828B1 (ko) 1982-10-12

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Legal Events

Date Code Title Description
ST Notification of lapse