Title:
絶縁性液体が充填された電気機器の相対湿度を判定するための方法および装置
Document Type and Number:
Japanese Patent JP2011520254
Kind Code:
A
Abstract:
A method for determining the relative humidity of an insulating liquid filled electric apparatus (20) comprising a container (1) containing insulating liquid (2) and gas (3), a communication unit (4) providing communication between the gas (3) of the container and gas of an external environment, and providing dehydration of gas passing through the communication unit (4), wherein the method comprises:
continuously measuring and storing the relative humidity of the gas (3) in the container (1),
calculating an average value of the relative humidity in the gas (3) based on said stored humidity measurements during a certain time period, and
determining the relative humidity of the insulating liquid (2) based on said average value of the relative humidity in the gas (3) and a relationship between the relative humidity of the gas (3) and the relative humidity of the insulating liquid (2) at equilibrium.
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Inventors:
Anderson, Gunnar
Stenesstam, Ben-Olov
Stenesstam, Ben-Olov
Application Number:
JP2011506630A
Publication Date:
July 14, 2011
Filing Date:
March 17, 2009
Export Citation:
Assignee:
AB Technology LDT.
International Classes:
H01F41/00; H01F27/14
Attorney, Agent or Firm:
Sonoda Yoshitaka
Kobayashi Yoshinori
Kobayashi Yoshinori