JPS55104770A - Method of and device for diagnosing insulation - Google Patents

Method of and device for diagnosing insulation

Info

Publication number
JPS55104770A
JPS55104770A JP1185679A JP1185679A JPS55104770A JP S55104770 A JPS55104770 A JP S55104770A JP 1185679 A JP1185679 A JP 1185679A JP 1185679 A JP1185679 A JP 1185679A JP S55104770 A JPS55104770 A JP S55104770A
Authority
JP
Japan
Prior art keywords
voltage
pulse
article
partial discharge
divided
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.)
Pending
Application number
JP1185679A
Other languages
Japanese (ja)
Inventor
Eiji Koyanagi
Hisayasu Mitsui
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP1185679A priority Critical patent/JPS55104770A/en
Priority to GB7928161A priority patent/GB2029587B/en
Publication of JPS55104770A publication Critical patent/JPS55104770A/en
Pending legal-status Critical Current

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  • Testing Relating To Insulation (AREA)

Abstract

PURPOSE: To enhance the measuring accuracy of a device for diagnosing an insulator by averaging the generation of partial discharge pulses and measure the insulating degree digitized by counting the generated pulses by raising and lowering the high DC voltage to the insulator to generate a partial discharge.
CONSTITUTION: A high frequency voltage raised through a high frequency stepup transformer 3 is converted through a high voltage rectifier 4 and polarity switch 5, etc. into a high DC voltage, which is then applied to an article 10 to be tested. This high DC voltage is divided through voltage dividing resistor 9, and the divided voltage is compared with the output voltage waveform from predetermined function generator 12 at a differential amplifier 13. When there is any difference between the output voltage waveform and the divided voltage, the output level of a low voltage rectifier circuit is regualted by a phase control circuit 14. Thus, the applied DC voltage is controlled in proportion to the output voltage from the function generator 12. When the high DC voltage is applied to an article 10 to be tested, a partial discharge occurs at the article 12. The pulse voltage signal thus obtained is compared with the standard voltage to form a rectangular waveform pulse having predetermined amplitude and duration. A recorder 28 simultaneously records the applied voltage and the rectangular waveform pulse thus generated, and a pulse counter 29 counts and indicates the accumulated rectangular pulses.
COPYRIGHT: (C)1980,JPO&Japio
JP1185679A 1978-08-11 1979-02-06 Method of and device for diagnosing insulation Pending JPS55104770A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP1185679A JPS55104770A (en) 1979-02-06 1979-02-06 Method of and device for diagnosing insulation
GB7928161A GB2029587B (en) 1978-08-11 1979-08-13 Methods and apparatus for diagnosing faults in the insulation of electrical insulator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1185679A JPS55104770A (en) 1979-02-06 1979-02-06 Method of and device for diagnosing insulation

Publications (1)

Publication Number Publication Date
JPS55104770A true JPS55104770A (en) 1980-08-11

Family

ID=11789360

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1185679A Pending JPS55104770A (en) 1978-08-11 1979-02-06 Method of and device for diagnosing insulation

Country Status (1)

Country Link
JP (1) JPS55104770A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60120268A (en) * 1983-12-05 1985-06-27 Toshiba Corp Corona discharge detecting apparatus
JP2014202628A (en) * 2013-04-05 2014-10-27 株式会社日本自動車部品総合研究所 Insulation inspection device for rotating electrical machine

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5524622A (en) * 1978-08-11 1980-02-21 Toshiba Corp Insulation inspecting method and device

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5524622A (en) * 1978-08-11 1980-02-21 Toshiba Corp Insulation inspecting method and device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60120268A (en) * 1983-12-05 1985-06-27 Toshiba Corp Corona discharge detecting apparatus
JP2014202628A (en) * 2013-04-05 2014-10-27 株式会社日本自動車部品総合研究所 Insulation inspection device for rotating electrical machine

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