Title:
ELECTRICAL INSULATION OIL COMPOSITION
Document Type and Number:
Japanese Patent JP2023151681
Kind Code:
A
Abstract:
To provide an electrical insulation oil composition that has a pour point of -40°C or lower, exhibits superior initial transparency, resists corrosion, and satisfies the oxidation stability qualities defined in ICE60296.SOLUTION: This electrical insulation oil composition contains a mineral oil-based base oil (X) satisfying requirements (1) through (4) below. Requirement (1): the pour point is -40.0°C or lower. Requirement (2): the aniline point is 68.5°C to 77.0°C inclusive. Requirement (3): the %CA value according to ring analysis (the n-d-M method) is 3.5 to 6.8 inclusive. Requirement (4): the Saybolt color is +20 or higher.SELECTED DRAWING: None
Inventors:
ONO TAKASHI
Application Number:
JP2022061429A
Publication Date:
October 16, 2023
Filing Date:
March 31, 2022
Export Citation:
Assignee:
IDEMITSU KOSAN CO
International Classes:
C10M101/02; H01B3/20; C10M171/00
Attorney, Agent or Firm:
Patent Attorney Corporation Otani Patent Office