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    • 10. 发明授权
    • Method of suppressing supersaturation in underground electrical cables
    • 抑制地下电缆过饱和的方法
    • US6162491A
    • 2000-12-19
    • US400739
    • 1999-09-21
    • Glen J. Bertini
    • Glen J. Bertini
    • H01B13/32B05D5/12
    • H01B13/322
    • A method for enhancing the dielectric properties of an electrical cable having a central stranded conductor encased in a polymeric insulation. The cable defines an interstitial void space (v.sub.1) between the strands of the conductor. The volume (v.sub.2) of a dielectric enhancement fluid required to be absorbed by the cable to reach a predetermined level of dielectric enhancement is determined. The ratio of (v.sub.1 /v.sub.2) is computed. If the ratio of (v.sub.1 /v.sub.2) is greater than a maximum ratio of 1.4, then a quantity of the dielectric enhancement fluid is diluted with a sufficient quantity of a diluent to produce a mixture of diluent and dielectric enhancement fluid, such that when the volume (v.sub.1) of the mixture is supplied to the cable interior, the cable will have been supplied with a volume (v.sub.3) of the dielectric enhancement fluid within the mixture such that (v.sub.3 /v.sub.2) is less than 1.4. The diluent is substantially insoluble in the polymeric insulation, has a sufficiently low initial viscosity to enable introduction into the cable interior, and is miscible with the dielectric enhancement fluid.
    • 一种用于增强具有封装在聚合物绝缘体中的中央绞合导体的电缆的介电性能的方法。 电缆限定了导体股线之间的间隙空隙(v1)。 确定需要被电缆吸收以达到预定电介质增强水平的电介质增强流体的体积(v2)。 计算(v1 / v2)的比率。 如果(v1 / v2)的比例大于1.4的最大比,则用足够量的稀释剂稀释介电增强流体的量,以产生稀释剂和介电增强流体的混合物,使得当 混合物的体积(v1)被供应到电缆内部,电缆将被供应混合物内的介电增强流体的体积(v3),使得(v3 / v2)小于1.4。 稀释剂基本上不溶于聚合物绝缘体,具有足够低的初始粘度以使其能够引入电缆内部,并与电介质增强流体混溶。