METHOD FOR MANUFACTURING WATER-TREE RETARDANT MEDIUM-VOLTAGE ETHYLENE-PROPYLENE INSULATED CABLE, AND CABLE

• Main Authors: TANG, Chendan, YUAN, Jie, YIN, Sailian, LING, Guozhen, LIU, Xiongjun
• Format: Patent
• Language: Chinese; English; French
• Published: 20.06.2019
• Subjects: BASIC ELECTRIC ELEMENTS; CABLES; CONDUCTORS; ELECTRICITY; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING ORDIELECTRIC PROPERTIES

A method for manufacturing a water-tree retardant medium-voltage ethylene-propylene insulated cable, and a cable. The structure of the cable comprises: a conductor, a conductor shielding layer, an insulating layer, an insulating shielding layer, and a sheath layer which are sequentially provided around a same axis from inside to outside; a cross-linked polyethylene semi-conductive shielding material constituting the conductor shielding layer; an ethylene propylene diene monomer insulating material constituting the insulating layer; a rubber semi-conductive shielding material constituting the insulating shielding layer; and a polyethylene sheath material constituting the sheath layer. The method for manufacturing the cable comprises the steps of: 1) manufacturing the conductor; 2) manufacturing the conductor shielding layer; 3) manufacturing the insulating layer; 4) manufacturing the insulating shielding layer; 5) sparsely winding a bare copper wire; 6) extruding a sheath material. Both the electrical performa