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JPS5570752A - Balancing type partial discharge test circuit - Google Patents

Balancing type partial discharge test circuit

Info

Publication number
JPS5570752A
JPS5570752A JP14340778A JP14340778A JPS5570752A JP S5570752 A JPS5570752 A JP S5570752A JP 14340778 A JP14340778 A JP 14340778A JP 14340778 A JP14340778 A JP 14340778A JP S5570752 A JPS5570752 A JP S5570752A
Authority
JP
Japan
Prior art keywords
partial discharge
pulse
test circuit
external noise
corona
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
JP14340778A
Other languages
Japanese (ja)
Other versions
JPS6013471B2 (en
Inventor
Hideki Takahashi
Kazuo Kobayashi
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 JP14340778A priority Critical patent/JPS6013471B2/en
Publication of JPS5570752A publication Critical patent/JPS5570752A/en
Publication of JPS6013471B2 publication Critical patent/JPS6013471B2/en
Expired legal-status Critical Current

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  • Testing Relating To Insulation (AREA)

Abstract

PURPOSE: To enable to measure only the partial discharge pulse for the object with the corona measuring unit singly, by erasing the external noise produced at the part other than the object in the partial discharge test circuit in balancing operation.
CONSTITUTION: As the means rejecting external noise, the variable impedance element 20 adjustable to the impedance equal to the high impedance element 16 and the balancing section 28 including the pulse transformers 23 and 24 are provided. Further, high frequency cable 26 and the corona detector 27 are connected to it. Thus, the voltage is reduced to external noise and the output voltage of the pulse transformer can not be measured with balancing operation. On the other hand, to the partial discharge pulse produced in the object 25, since most current flows to the branch not including the high impedance element 16, true corona pulse can be measured with good sensitivity.
COPYRIGHT: (C)1980,JPO&Japio
JP14340778A 1978-11-22 1978-11-22 Balanced partial discharge test circuit Expired JPS6013471B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14340778A JPS6013471B2 (en) 1978-11-22 1978-11-22 Balanced partial discharge test circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14340778A JPS6013471B2 (en) 1978-11-22 1978-11-22 Balanced partial discharge test circuit

Publications (2)

Publication Number Publication Date
JPS5570752A true JPS5570752A (en) 1980-05-28
JPS6013471B2 JPS6013471B2 (en) 1985-04-08

Family

ID=15338045

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14340778A Expired JPS6013471B2 (en) 1978-11-22 1978-11-22 Balanced partial discharge test circuit

Country Status (1)

Country Link
JP (1) JPS6013471B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100667512B1 (en) 2005-03-05 2007-01-10 엘에스전선 주식회사 Partial discharge detection device of junction box for underground power transmission cable

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100667512B1 (en) 2005-03-05 2007-01-10 엘에스전선 주식회사 Partial discharge detection device of junction box for underground power transmission cable

Also Published As

Publication number Publication date
JPS6013471B2 (en) 1985-04-08

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