JPS578464A - Layer short circuit detecting device of electric winding - Google Patents

Layer short circuit detecting device of electric winding

Info

Publication number
JPS578464A
JPS578464A JP8293480A JP8293480A JPS578464A JP S578464 A JPS578464 A JP S578464A JP 8293480 A JP8293480 A JP 8293480A JP 8293480 A JP8293480 A JP 8293480A JP S578464 A JPS578464 A JP S578464A
Authority
JP
Japan
Prior art keywords
short circuit
coil
detected
data
frequency
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
JP8293480A
Other languages
Japanese (ja)
Other versions
JPS6362706B2 (en
Inventor
Yukio Ishigaki
Shinichi Ito
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 Ltd
Original Assignee
Hitachi 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 Ltd filed Critical Hitachi Ltd
Priority to JP8293480A priority Critical patent/JPS578464A/en
Publication of JPS578464A publication Critical patent/JPS578464A/en
Publication of JPS6362706B2 publication Critical patent/JPS6362706B2/ja
Granted legal-status Critical Current

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
    • G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
    • G01R31/72—Testing of electric windings
    • 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
    • G01R31/52—Testing for short-circuits, leakage current or ground faults

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)

Abstract

PURPOSE:To detect an interlayer short circuit of electric winding such as a troidal coil for closing plasma etc., by making a frequency analysis in order in the course of energizing the terminal voltage of a block coil of a low voltage side, and comparing this resulted frequency analysis with a data which is set in advance, or a stored data in the past. CONSTITUTION:Terminal voltage of a block coil 24 is detected by a detector 36, and is Fourier-analyzed by a frequency analyzer 54. Its result is compared with a set point of a data setting device 58, or a data in the past, and whether an interlayer short circuit exists or not is detected by a short circuit deciding circuit 50. The frequency analyzer 54 observes in order a power spectrum of high frequency, which is generated due to transient phenomena in a layer short circuit, etc., in the course of energizing a coil. Accordingly, an absolute value of a detected value of the detector 36 for detecting a variation of voltage, which is caused by the interlayer short circuit does not exert a direct influence on the frequency analyzer 54, and block coils 14-22 are electromagnetically coupled with the coil 24, therefore, even a slight variation of voltage due to short circuit of the coils 14-22 is detected by monitoring the power spectrum.
JP8293480A 1980-06-20 1980-06-20 Layer short circuit detecting device of electric winding Granted JPS578464A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8293480A JPS578464A (en) 1980-06-20 1980-06-20 Layer short circuit detecting device of electric winding

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8293480A JPS578464A (en) 1980-06-20 1980-06-20 Layer short circuit detecting device of electric winding

Publications (2)

Publication Number Publication Date
JPS578464A true JPS578464A (en) 1982-01-16
JPS6362706B2 JPS6362706B2 (en) 1988-12-05

Family

ID=13788050

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8293480A Granted JPS578464A (en) 1980-06-20 1980-06-20 Layer short circuit detecting device of electric winding

Country Status (1)

Country Link
JP (1) JPS578464A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60133022A (en) * 1983-12-20 1985-07-16 Osaka Suiso Kogyo Kk Polycondensation product
WO2013016750A1 (en) * 2011-08-01 2013-02-07 Technische Universitat Wien Method and device for detecting a deterioration in the state of an insulation in an operating electric machine
RU2523762C1 (en) * 2013-01-09 2014-07-20 Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Южно-Российский государственный университет экономики и сервиса" (ФГБОУ ВПО "ЮРГУЭС") Device for inductive winding diagnostics

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60133022A (en) * 1983-12-20 1985-07-16 Osaka Suiso Kogyo Kk Polycondensation product
WO2013016750A1 (en) * 2011-08-01 2013-02-07 Technische Universitat Wien Method and device for detecting a deterioration in the state of an insulation in an operating electric machine
US9529032B2 (en) 2011-08-01 2016-12-27 Technische Universitat Wien Method and device for detecting a deterioration in the state of an insulation in an operating electric machine
RU2523762C1 (en) * 2013-01-09 2014-07-20 Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Южно-Российский государственный университет экономики и сервиса" (ФГБОУ ВПО "ЮРГУЭС") Device for inductive winding diagnostics

Also Published As

Publication number Publication date
JPS6362706B2 (en) 1988-12-05

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