BE778958A - Detecteur d'effet de couronne a reponse logarithmique - Google Patents

Detecteur d'effet de couronne a reponse logarithmique

Info

Publication number
BE778958A
BE778958A BE778958A BE778958A BE778958A BE 778958 A BE778958 A BE 778958A BE 778958 A BE778958 A BE 778958A BE 778958 A BE778958 A BE 778958A BE 778958 A BE778958 A BE 778958A
Authority
BE
Belgium
Prior art keywords
logarithmic response
effect detector
crown effect
crown
logarithmic
Prior art date
Application number
BE778958A
Other languages
English (en)
Inventor
G T Hummert
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
Application filed by Westinghouse Electric Corp filed Critical Westinghouse Electric Corp
Publication of BE778958A publication Critical patent/BE778958A/fr

Links

Classifications

    • 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
    • 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
    • G01R31/14—Circuits therefor, e.g. for generating test voltages, sensing circuits
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Testing Relating To Insulation (AREA)
  • Measurement Of Current Or Voltage (AREA)
BE778958A 1971-02-05 1972-02-04 Detecteur d'effet de couronne a reponse logarithmique BE778958A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US11297571A 1971-02-05 1971-02-05

Publications (1)

Publication Number Publication Date
BE778958A true BE778958A (fr) 1972-08-04

Family

ID=22346882

Family Applications (1)

Application Number Title Priority Date Filing Date
BE778958A BE778958A (fr) 1971-02-05 1972-02-04 Detecteur d'effet de couronne a reponse logarithmique

Country Status (3)

Country Link
US (1) US3727129A (fr)
JP (1) JPS4857076U (fr)
BE (1) BE778958A (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4064454A (en) * 1973-02-14 1977-12-20 Matsushita Electric Industrial Co., Ltd. Corona discharge detecting device
US3971984A (en) * 1974-09-04 1976-07-27 B-Cubed Engineering, Inc. Wide-range logarithmic responding translation circuit
GB1562853A (en) * 1976-10-30 1980-03-19 Matsushita Electric Industrial Co Ltd Corona discharge detection apparatus
US4904946A (en) * 1985-10-02 1990-02-27 Seiko Instruments Inc. Method for evaluating insulating films
US5116136A (en) * 1989-06-01 1992-05-26 Massachusetts Institute Of Technology Temperature measurements using thermistor elements
US5365177A (en) * 1993-03-10 1994-11-15 Honeywell Inc. Apparatus for measurement of high frequency corona discharges in electrical components
US5506511A (en) * 1994-09-09 1996-04-09 Electric Power Research Institute Inc. Method of electrically detecting on-site partial discharges in the insulating medium of an electrical power transformer and apparatus therefor
JPH09251049A (ja) * 1996-03-15 1997-09-22 Asuko Kk 電解コンデンサの動作状態診断方法及び電解コンデンサの動作状態診断装置
US6740786B1 (en) * 2002-11-12 2004-05-25 Chung-Shan Institute Of Science & Technology Method for the preparation of 2, 2, 3, 4, 4, 4-hexafluoro-1-butanol

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2802180A (en) * 1953-07-07 1957-08-06 Gen Electric Corona detector
US3114078A (en) * 1956-06-05 1963-12-10 Bbc Brown Boveri & Cie Amplifier apparatus for measuring currents and/or voltages on high voltage transmission lines
US3120647A (en) * 1961-07-26 1964-02-04 Houston Instr Corp Logarithmic frequency discriminator circuits
US3483475A (en) * 1966-01-11 1969-12-09 Us Navy Extended range log amplifier
US3500198A (en) * 1966-12-02 1970-03-10 Columbia Broadcasting Syst Inc Apparatus and method for measuring the logarithm of the root-mean-square value of a signal
US3579127A (en) * 1967-05-31 1971-05-18 Gulf Energy & Environ Systems Apparatus for monitoring pulses

Also Published As

Publication number Publication date
US3727129A (en) 1973-04-10
JPS4857076U (fr) 1973-07-20

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