Title:
METHOD FOR MAINTAINING INSULATION PERFORMANCE OF INSULATING OIL
Document Type and Number:
Japanese Patent JP2019114587
Kind Code:
A
Abstract:
To provide a maintaining method for insulation performance of insulating oil, which prevents deterioration of the insulation performance of the insulating oil due to gas generated at the time of tap switching operation of a switch while preventing oxidative deterioration of the insulating oil.SOLUTION: In a container 2b of a switch 2, insulating oil 5 is sealed by an air layer portion 7 consisting of inert gas to prevent oxidation deterioration of the insulating oil 5. In addition, the gas generated by tap switching operation of the switch 2 is transferred to the air layer portion 7 to suppress an increase in the gas concentration in the insulating oil 5, and hydrogen having low solubility in the insulating oil 5, oxygen, and nitrogen are prevented from bubbling in the insulating oil 5. Since the gas does not bubble in the insulating oil 5, the deterioration of the insulating performance of the insulating oil 5 can be prevented.SELECTED DRAWING: Figure 1
Inventors:
MIYAJIMA KIWAMU
MIYAMOTO SHINJI
INADA TAKAYUKI
MIYAMOTO SHINJI
INADA TAKAYUKI
Application Number:
JP2017244654A
Publication Date:
July 11, 2019
Filing Date:
December 21, 2017
Export Citation:
Assignee:
AICHI ELECTRIC CO LTD
International Classes:
H01F27/02; H01F29/04