METHOD FOR ENHANCING THE DIELECTRIC STRENGTH OF CABLE USING FLUID HAVING A HIGH DIFFUSION COEFFICIENT

摘要

A method for enhancing the dielectric properties of new or in-service electrical cable is disclosed, the method comprising supplying the interstitial void space of the cable's conductor with a water-reactive antitreeing agent having a diffusion coefficient of at least 1 x 100 -7 cm2/second at 50ÀC. in the insulation of the cable end having an initial viscosity of .ltoreq. 100 cP (mPa~s) at 25ÀC. The instant method provides a more symmetrical distribution of dielectric enhancing fluid in the insulation than prior art approaches and results in a significant reduction in cable treatment time.