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Electrical properties of insulating materials is the key to new large capacity pipeline transmission technology. The dielectric loss factor, capacitance, lightning withstand voltage, local discharge, power frequency breakdown strength of the new polymer cement concrete (PCC) were studied. Through the experimental analysis: With the increase of temperature, The relative dielectric constant of PCC sample...
In this paper, researches were carried on the breakdown characteristics of short gap SF6/ CF4, under the flat plate and needle board electrodes, the breakdown voltage of SF6/CF4 gas mixetures was measured when partial pressure ratio of SF6 is from 0% to 100% and the pressure is from 0.1MPa to 0.4MPa, the effects of the gas pressure and other factors on insulation performance of SF6 and its mixed gas...
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