Patent ID: 7488892
Filing Date: 2009-02-10
Classification: H01B

Abstract:
1. A method for designing a cable comprising a conductor, an insulating layer surrounding said conductor and a protective element surrounding said conductor, said protective element including at least one polymeric expanded layer, comprising the steps of: selecting a conductor cross-sectional area; selecting a voltage class for the cable; determining a correlation between a thickness of said protective element and a thickness of said insulating layer so as to ensure the safe operation of the cable in the selected voltage class on said selected conductor cross-sectional area and that the cable is not detectably damaged upon an impact on the cable by an energy of at least 25 J; selecting a thickness of said protective element; selecting a correlated thickness of said insulating layer; using said selected insulating layer thickness and said selected protective element thickness in the design of the cable for said selected voltage class and selected conductor cross-sectional area.