JPS57135339A - Corrosion current measuring method of underground transformer - Google Patents

Corrosion current measuring method of underground transformer

Info

Publication number
JPS57135339A
JPS57135339A JP2043981A JP2043981A JPS57135339A JP S57135339 A JPS57135339 A JP S57135339A JP 2043981 A JP2043981 A JP 2043981A JP 2043981 A JP2043981 A JP 2043981A JP S57135339 A JPS57135339 A JP S57135339A
Authority
JP
Japan
Prior art keywords
terminal
transformer
corrosion current
earth
base
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
JP2043981A
Other languages
Japanese (ja)
Other versions
JPH0152691B2 (en
Inventor
Yutaka Shimizu
Hideshi Kimata
Ryuichi Abe
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.)
Aisin Takaoka Co Ltd
Takaoka Toko Co Ltd
Tokyo Electric Power Co Holdings Inc
Original Assignee
Tokyo Electric Power Co Inc
Takaoka Electric Mfg Co Ltd
Takaoka Industrial 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 Tokyo Electric Power Co Inc, Takaoka Electric Mfg Co Ltd, Takaoka Industrial Co Ltd filed Critical Tokyo Electric Power Co Inc
Priority to JP2043981A priority Critical patent/JPS57135339A/en
Publication of JPS57135339A publication Critical patent/JPS57135339A/en
Publication of JPH0152691B2 publication Critical patent/JPH0152691B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N17/00—Investigating resistance of materials to the weather, to corrosion, or to light
    • G01N17/02—Electrochemical measuring systems for weathering, corrosion or corrosion-protection measurement

Abstract

PURPOSE:To detect a corrosion current of a metallic tank of an underground transformer as it is in a working state, by measuring in advance a resistance value between an earth terminal and a base terminal before the transformer is buried, and measuring a potential difference between measuring terminals after the transformer has been buried. CONSTITUTION:On the upper part of a metallic tank 1 having a cooling fin 1a, a terminal chamber 1b is formed and a terminal base 2 having a pair of measuring terminals 2a, 2b is provided. On the other hand, an earth terminal 3 is installed to the upper part of the tank 1, also a base terminal 10 is installed to a lower base 1C, and the terminal 2a and the terminal 3, and the terminal 2b and the terminal 10 are connected respectively. As for such a transformer, before it is buried, a resistance value R between the terminal 3 and the terminal 10 is measured in advance. Subsequently, the transformer is installed in an underground hole 6, and an earth rod of ground 13 is connected to the terminal 3 with an earth wire 8. When the transformer is installed in this way a potential difference (e) between the terminal 2a and 2b, a corrosion current (i) shown by the expression is derived and an advancing state of corrosion is monitored.
JP2043981A 1981-02-14 1981-02-14 Corrosion current measuring method of underground transformer Granted JPS57135339A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2043981A JPS57135339A (en) 1981-02-14 1981-02-14 Corrosion current measuring method of underground transformer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2043981A JPS57135339A (en) 1981-02-14 1981-02-14 Corrosion current measuring method of underground transformer

Publications (2)

Publication Number Publication Date
JPS57135339A true JPS57135339A (en) 1982-08-20
JPH0152691B2 JPH0152691B2 (en) 1989-11-09

Family

ID=12027069

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2043981A Granted JPS57135339A (en) 1981-02-14 1981-02-14 Corrosion current measuring method of underground transformer

Country Status (1)

Country Link
JP (1) JPS57135339A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS536552A (en) * 1976-07-07 1978-01-21 Hitachi Ltd Variable gain amplifier

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS536552A (en) * 1976-07-07 1978-01-21 Hitachi Ltd Variable gain amplifier

Also Published As

Publication number Publication date
JPH0152691B2 (en) 1989-11-09

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