METHOD OF MAKING POWER CABLE WITH THERMOPLASTIC ELECTRIC INSULATING LAYER Russian patent published in 2016 - IPC H01B9/02 H01B13/14 

FIELD: electricity.

SUBSTANCE: invention relates to production of power cable for transmission and distribution of middle-voltage or high-voltage electric energy. Method of power cable manufacturing containing at least one electrically conductive core and at least one thermoplastic electric insulating layer, includes steps in which thermoplastic material in solid form, having enthalpy of fusion, equal or less than 70 J/g is impregnated with dielectric fluid medium to produce impregnated thermoplastic material; said impregnated thermoplastic material in crushed solid form is fed into single-worm extruder and extruded impregnated thermoplastic material onto said at least one conducting core to form said at least one thermoplastic electric insulating layer, according to which said impregnated thermoplastic material is not subjected to any treatment at any stage of mechanical homogenization in molten state.

EFFECT: invention provides improved dielectric strength.

14 cl, 2 dwg