公开(公告)号：US20170349854A1

公开(公告)日：2017-12-07

申请号：US15537989

申请日：2016-02-04

Applicant: HITACHI, LTD.

Inventor： Takayuki NAKAKAWAJI ,  Hiroyuki AKATA ,  Tomohiro MORIYAMA ,  Kazuhiro SATOU ,  Makoto HIROSE

IPC: C10M169/00 ,  C10M125/02 ,  C10M107/02 ,  H01H33/64 ,  H02B7/01 ,  C10M115/08 ,  C10M125/22

CPC classification number: C10M169/00 ,  C10M107/02 ,  C10M115/08 ,  C10M125/02 ,  C10M125/22 ,  C10M169/02 ,  C10M2201/041 ,  C10M2201/066 ,  C10M2201/102 ,  C10M2201/1026 ,  C10M2203/1065 ,  C10M2205/0206 ,  C10M2205/0285 ,  C10M2207/1256 ,  C10M2215/08 ,  C10M2215/28 ,  C10N2230/02 ,  C10N2230/06 ,  C10N2230/08 ,  C10N2230/10 ,  C10N2230/74 ,  C10N2240/20 ,  C10N2250/10 ,  H01H1/60 ,  H01H3/62 ,  H01H33/64 ,  H02B7/01

Abstract: Provided is a lubricant for a gas insulated switchgear, with which properties of a base oil such as heat resistance, evaporation loss, fluidity under a low temperature, and chemical stability (oxidation resistance and HF resistance) are balanced at a level higher than the conventional level, and long service life and high reliability of the gas insulated switchgear are achieved. A lubricant for a gas insulated switchgear according to the present invention, contains: a base oil containing a polyalphaolefin having a kinematic viscosity at 40° C. of 50 mm2/s or more; and a thickener containing bisamides.