JPS5664416A - Cooling device - Google Patents

Cooling device

Info

Publication number
JPS5664416A
JPS5664416A JP13924679A JP13924679A JPS5664416A JP S5664416 A JPS5664416 A JP S5664416A JP 13924679 A JP13924679 A JP 13924679A JP 13924679 A JP13924679 A JP 13924679A JP S5664416 A JPS5664416 A JP S5664416A
Authority
JP
Japan
Prior art keywords
oil
oil pressure
motor
cooling device
erroneous operation
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
JP13924679A
Other languages
Japanese (ja)
Inventor
Shigetoshi Yamada
Koichi Terasaka
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 JP13924679A priority Critical patent/JPS5664416A/en
Publication of JPS5664416A publication Critical patent/JPS5664416A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/08—Cooling; Ventilating
    • H01F27/10—Liquid cooling
    • H01F27/12—Oil cooling

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Transformer Cooling (AREA)

Abstract

PURPOSE:To prevent an erroneous operation of an oil pressure relay by gradually circulating oil at the time of starting an oil pump through a motor-driven valve. CONSTITUTION:When an electric signal synchronizing with the start of the pump 3 is applied to the drive unit of the motor-driven valve 8, thereby controlling the opening and closing operations of the valve 8, the oil feeding amount to an oil- immersed transformer 1 can be controlled. Accordingly, an abrupt oil pressure variation can be avoided, the erroneous operation of the oil pressure relay 5 can be prevented, the reliability of the cooling device can be improved and the maintenance can be simply conducted.
JP13924679A 1979-10-30 1979-10-30 Cooling device Pending JPS5664416A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13924679A JPS5664416A (en) 1979-10-30 1979-10-30 Cooling device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13924679A JPS5664416A (en) 1979-10-30 1979-10-30 Cooling device

Publications (1)

Publication Number Publication Date
JPS5664416A true JPS5664416A (en) 1981-06-01

Family

ID=15240848

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13924679A Pending JPS5664416A (en) 1979-10-30 1979-10-30 Cooling device

Country Status (1)

Country Link
JP (1) JPS5664416A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62500553A (en) * 1984-10-29 1987-03-05 ピオッシュ、ルネ Transformer tank with reduced volume cooling using radial and concentric heat sinks

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62500553A (en) * 1984-10-29 1987-03-05 ピオッシュ、ルネ Transformer tank with reduced volume cooling using radial and concentric heat sinks

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