Induction Welding of Joints in High-Voltage Aluminum Underground Cable

This paper reviews the circumstances which led up to the conclusion that a new type of joint was needed for aluminum conductors in underground cables of 120-kV rating and up, and 1 000 000 circular mil conductor size and over with compact stranding. It describes the development of an induction welded joint, the characteristics of the completed weld, and the equipment needed in field work.