Through lighting impulse voltage and power frequency voltage tests to vacuum epoxy resin glass tubing insulating components dipping in SF6 gas

the relation of permitted field strengths between the tube surface and high voltage electrodes is confirmed which is 0.5:1.The initiative discussions of practical margin of reference values listed in Table 4-1 of the reference[1] in the design of field strength are made.Also

the design key points of electric properties and mechanical strength of vacuum epoxy resin glass tubing insulating components are introduced which include the metal terminal shape and size

effect and design of the wedge air gap and the conjunction strength between metal part and the insulating tube.