Patent ID: 6162491
Filing Date: 2000-12-19
Classification: H01B

Abstract:
A method for enhancing the dielectric properties of an electrical cable having a central stranded conductor encased in a polymeric insulation, the cable defining an interstitial void space (v.sub.1) between the strands of the conductor, comprising:(a) determining a volume (v.sub.2) of a dielectric enhancement fluid to be absorbed by the cable to reach a predetermined level of dielectric enhancement;(b) computing the ratio of (v.sub.1 /v.sub.2) for the cable;(c) if (v.sub.1 /v.sub.2) is greater than a predetermined maximum ratio determined to avoid supersaturation of the polymeric dielectric enhancement fluid after treatment and during long-term use, then diluting a quantity of the dielectric enhancement fluid 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 introduced into the cable, the cable will have been supplied with a volume (v.sub.3) of the dielectric enhancement fluid within the mixture such that the ratio (v.sub.3 /v.sub.2) is less than a predetermined maximum ratio of 2.0; and(d) introducing the mixture into the cable.