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Patent Searching and Data


Title:
METHOD FOR EVALUATING INSULATION PROPERTIES OF INSULATOR
Document Type and Number:
WIPO Patent Application WO/2017/150691
Kind Code:
A1
Abstract:
A method for evaluating insulation properties, the method being provided with: a step α for applying a DC voltage to a first insulator under prescribed application conditions, and measuring an integral value of a current flowing through the first insulator from the start of application of the DC voltage until a prescribed time has elapsed after the end of application of the DC voltage; a step β for applying a DC voltage to a second insulator under the same application conditions as in step α, and measuring an integral value of a current flowing through the second insulator from the start of application of the DC voltage until a prescribed time has elapsed after the end of application of the DC voltage; and a step γ for comparing a first graph showing the relationship between the elapsed time and the integral value obtained in step α and a second graph showing the relationship between the elapsed time and the integral value obtained in step β, and thereby evaluating the difference between the insulation properties of the first insulator and the insulation properties of the second insulator that accompany the application of the DC voltage.

Inventors:
SEKIGUCHI YOITSU (JP)
TAKADA TATSUO (JP)
TANAKA YASUHIRO (JP)
FUKUMA MASUMI (JP)
Application Number:
PCT/JP2017/008380
Publication Date:
September 08, 2017
Filing Date:
March 02, 2017
Export Citation:
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Assignee:
SUMITOMO ELECTRIC INDUSTRIES (JP)
GOTOH EDUCATIONAL CORP (JP)
NAT INST OF TECH (JP)
International Classes:
G01R31/12; G01R31/02
Foreign References:
JPS6161069A1986-03-28
JPH11166955A1999-06-22
JPS58144762A1983-08-29
JP2005227079A2005-08-25
JPH02161368A1990-06-21
JPS5748669A1982-03-20
JPS58161870A1983-09-26
JPS59184868A1984-10-20
JP2013029450A2013-02-07
Other References:
TATSUO TAKADA ET AL.: "Kodenkai Ondo Kohan'i no Chokuryu Zetsuen Hyoka no Denryu Sekibun Denkaryoho no Teian", PROCEEDINGS OF 2016 ANNUAL CONFERENCE OF THE INSTITUTE OF ELECTRICAL ENGINEERS OF JAPAN, 5 March 2016 (2016-03-05), pages 237 - 238, XP009515343
TATSUO TAKADA; TAKAO SAKAI; YOTSUO TORIYAMA: "Deduction of Electric Charge Distribution in Polymer Film", THE TRANSACTIONS OF THE INSTITUTE OF ELECTRICAL ENGINEERS OF JAPAN, vol. 92-A, no. 12, 1972, pages 537 - 544
"Calibration for Space Charge Distribution Measurement using Pulsed Electro-Acoustic Method''); IEC Technical Specification ''Calibration of Space Charge Measuring Equipment based on Pulsed Electro-Acoustic Measurement Principle", IEC TS 62758, 18 September 2012 (2012-09-18)
See also references of EP 3425411A4
Attorney, Agent or Firm:
YAMANO, Hiroshi (JP)
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