JPS55147946A - Preventive method for corrosion of winding - Google Patents

Preventive method for corrosion of winding

Info

Publication number
JPS55147946A
JPS55147946A JP5574679A JP5574679A JPS55147946A JP S55147946 A JPS55147946 A JP S55147946A JP 5574679 A JP5574679 A JP 5574679A JP 5574679 A JP5574679 A JP 5574679A JP S55147946 A JPS55147946 A JP S55147946A
Authority
JP
Japan
Prior art keywords
benzotriazole
pure water
concentration
ion exchange
exchange resin
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
JP5574679A
Other languages
Japanese (ja)
Inventor
Yasumasa Furuya
Takashi Hasegawa
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 JP5574679A priority Critical patent/JPS55147946A/en
Publication of JPS55147946A publication Critical patent/JPS55147946A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • H02K3/44—Protection against moisture or chemical attack; Windings specially adapted for operation in liquid or gas

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Insulation, Fastening Of Motor, Generator Windings (AREA)
  • Motor Or Generator Cooling System (AREA)

Abstract

PURPOSE:To suppress the corrosion of a copper winding caused by cooling water, by adsorbing benzotriazole to an ion exchange resin in a cooling water system so as to maintain the concentration of benzotriazole in pure water in excess of a predetermined level. CONSTITUTION:In a cooling system, in which a generator 1 is cooled by supplying pure water from a pure water tank 2 into a hollow copper winding in the generator 1 via a pump 3 and a cooler 4, a part of circulation water, to which a predetermined concentration of benzotriazole has been added, is introduced into an ion exchange resin tower 5 so as to adsorb the benzotriazole to an ion exchange resin in the tower 5. The rate of adsorption of the benzotriazole is set at such a level that allows the concentration thereof in the pure water can be maintained at not less than 0.5ppm. Consequently, the corrosion of the copper winding can be suppressed. Even when the concentration of benzotriazole in the pure water is decreased, the benzotriazole in the ion exchange resin flows out to maintain the concentration thereof in the pure water at a constant level.
JP5574679A 1979-05-09 1979-05-09 Preventive method for corrosion of winding Pending JPS55147946A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5574679A JPS55147946A (en) 1979-05-09 1979-05-09 Preventive method for corrosion of winding

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5574679A JPS55147946A (en) 1979-05-09 1979-05-09 Preventive method for corrosion of winding

Publications (1)

Publication Number Publication Date
JPS55147946A true JPS55147946A (en) 1980-11-18

Family

ID=13007414

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5574679A Pending JPS55147946A (en) 1979-05-09 1979-05-09 Preventive method for corrosion of winding

Country Status (1)

Country Link
JP (1) JPS55147946A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6295449A (en) * 1985-10-22 1987-05-01 Fuji Electric Co Ltd Method for measuring concentration of benzotriazole in water
EP1383030A3 (en) * 2002-07-15 2008-12-10 Hitachi, Ltd. Cooling device of electronic apparatus

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6295449A (en) * 1985-10-22 1987-05-01 Fuji Electric Co Ltd Method for measuring concentration of benzotriazole in water
EP1383030A3 (en) * 2002-07-15 2008-12-10 Hitachi, Ltd. Cooling device of electronic apparatus

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