| 摘要 |
An insulating spacer comprising a central conductor, a cylindrically shaped metallic shield which is arranged around said central conductor and is partially in contact with said central conductor, an insulating member made of a thermosetting resin said shield is embedded into the inner diameter thereof and said central conductor is enclosed thereby, and a shield of the earth side which is deeply embedded into a outwardly extending flange portion of said insulating member, and also preferably comprises fiber-reinforced resin formed of fibrous tissues which is tightly wound around a plurality of independent grooves provided on the periphery of said central conductor and a thermosetting resin which is infiltrated into said fibrous tissues so that said insulating member formed of a thermosetting resin may be firmly fixed around over said central conductor, thus said insulating spacer being adapted to be applied to a duct line air power transmission bus bar, gas-filled breaker or the like in which a sulfur hexafluoride gas is employed as an insulating medium.
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