Tellurium alloy lead sheath for power cable

DURING RECENT YEARS there has been a pronounced increase in load requirements and operating temperatures of power cable systems. The accompanying increase in cyclical expansion movement of cable in underground ducts has placed such a severe bending burden on ordinary sheath, such as copper bearing, that sheath life no longer can be co-ordinated with insulation life. Alloy sheaths with greatly improved bending fatigue resistance are a solution of this problem.