Abstract
Polyethylene-insulated sodium conductors, having economic advantages over conventional conductors, have been developed. The sodium conductors are light in weight and can be manufactured on standard cable-fabricating equipment. The light weight and the usual flexibility of the sodium cable should afford greater ease of installation in direct-buried and overhead power cable applications. Extensive tests indicate that this system is tough and resilient, and can withstand considerable abuse. Sodium's electrical conductivity ranks just below copper and aluminum. A useful service life of 40 years, under normal ambient conditions, is predicted for direct-buried cable.
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