To improve a gas insulated stationary induction electric equipment capable of miniaturizing and enhancing reliability and economic efficiency as well as making it thermally and electrically stable and compact utilizing a material at lower allowable temperature than that of content's main body for lead out accessories such as a bushing, etc.

Within a gas insulated stationary induction electric equipment in a naturally circulating cooling system wherein content's main body 2 is contained in a tank 1 which seals inner space a gas as insulating and cooling medium, the difference in the gas temperature between the upper and lower parts of the tank 1 in the operation time is set up in relatively high value so as to arrange a lead out bushing 6 in the lower part of the tank 1 at the lower gas temperature or a bushing containing pocket communicated with the lower part. Through these procedures, the bushing can be miniaturized, besides the cracking hardly occurs owing to the decline in the applicable temperature so as to enhance the thermal, electrical stability and durability of the bushing thereby enabling the miniaturization, enhancement of reliability and economic efficiency of the whole gas insulated stationary induction electric equipment to be realized.