Manufacture of electric cables

Details Manufacture of electric cables Manufacture of electric cables

H - Electricity

01

B

H01B 13/06 (2006.01) H01B 3/44 (2006.01) H01B 13/14 (2006.01)

Patent

CA 2144144

Electric cables with sector-shaped conductors, for maximizing duct capacity, are made by a process in which the shaped metallic conductor is first preformed into a helical twisted form ("pre-spiralled"), next covered with insulation of EPR, polyethylene or other suitable insulation material to form a core, third subjected to ionizing radiation to crosslink the insulation, and fourth laid up with other like cores to form a cable. All the steps are well known yet the potential to apply radiation crosslinking to this type of cable - in which other crosslinking techniques are wholly impracticable - has not hitherto been appreciated.

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