JPS57141565A - Measuring method for sulphurization state of transformer containing oil - Google Patents

Measuring method for sulphurization state of transformer containing oil

Info

Publication number
JPS57141565A
JPS57141565A JP56027413A JP2741381A JPS57141565A JP S57141565 A JPS57141565 A JP S57141565A JP 56027413 A JP56027413 A JP 56027413A JP 2741381 A JP2741381 A JP 2741381A JP S57141565 A JPS57141565 A JP S57141565A
Authority
JP
Japan
Prior art keywords
transformer
sulphurization
state
winding resistance
internal
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
JP56027413A
Other languages
Japanese (ja)
Inventor
Kenichi Akiyama
Masatoshi Iso
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 JP56027413A priority Critical patent/JPS57141565A/en
Publication of JPS57141565A publication Critical patent/JPS57141565A/en
Pending 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

Abstract

PURPOSE:To realize the accurate measurement of the internal sulphurization state from outside without lifting the contents of a transformer, by flowing the measuring current via a tap switch and comparing the winding resistance at this moment with the winding resistance in the normal state. CONSTITUTION:A tap switch is set in series to the internal winding of a transformer and connected to an external terminal. The winding resistance of the transformer is measured by flowing the <=0.5A measuring current through the external terminal and while switching the tap switch. Then the winding resistance value of this moment is compared with the winding resistance value in the normal mode before production of a sulfide to presume the sulphurization state of the transformer. In other words, it is decided that the sulphurization progresses considerably in case the winding resistance value is larger than obtained in the normal mode. In such way, the internal sulphurization state of a transformer is accurately measured from outside without lifting the contents of the transformer.
JP56027413A 1981-02-26 1981-02-26 Measuring method for sulphurization state of transformer containing oil Pending JPS57141565A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56027413A JPS57141565A (en) 1981-02-26 1981-02-26 Measuring method for sulphurization state of transformer containing oil

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56027413A JPS57141565A (en) 1981-02-26 1981-02-26 Measuring method for sulphurization state of transformer containing oil

Publications (1)

Publication Number Publication Date
JPS57141565A true JPS57141565A (en) 1982-09-01

Family

ID=12220395

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56027413A Pending JPS57141565A (en) 1981-02-26 1981-02-26 Measuring method for sulphurization state of transformer containing oil

Country Status (1)

Country Link
JP (1) JPS57141565A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2107384A1 (en) 2008-03-31 2009-10-07 ABB Research Ltd. Determining degraded insulating ability in an inductively operating element
EP2328158A1 (en) * 2008-09-26 2011-06-01 Mitsubishi Electric Corporation Oil-filled electric device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2107384A1 (en) 2008-03-31 2009-10-07 ABB Research Ltd. Determining degraded insulating ability in an inductively operating element
EP2328158A1 (en) * 2008-09-26 2011-06-01 Mitsubishi Electric Corporation Oil-filled electric device
EP2328158A4 (en) * 2008-09-26 2012-07-11 Mitsubishi Electric Corp Oil-filled electric device
US8305179B2 (en) 2008-09-26 2012-11-06 Mitsubishi Electric Corporation Oil immersed electrical apparatus

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