engleski

Simulation of the power cable processing

During the manufacturing of power cable insulated with crosslinkable polyethylene, the hot polymer is applied to the conductor by extrusion, below temperatures of rapid crosslinking. The insulated cable going into a high-pressure heated tube (filled with nitrogen) in order to heat up the insulation to temperatures at which the crosslinking agent is highly active. Changes of process variables associated with the continuous vulcanization (CV) tube can cause changes in the physical properties, the aging characteristics, and the heat resistance of the cable insulation. Performance of insulating compounds in this area of the crosslinking process can determine maximum output rates of a power cable manufacturing facility. Many power cable manufactures have determined the optimum operating conditions for their vulcanization tubes through practical experiments. However, the introduction of new insulation materials or different cable constructions often leads to inefficient operation or incorrect evaluation because of the lack of ability to predict performance in vulcanization tube. With this point in mind, a mathematical model of the continuous vulcanizing (CV) process has been developed.

Vulcanization; Cross-linking; Vulcanization tube; XLPE 4201; Dicumyl peroxide; Medium voltage power cable; Mathematical model; Simulation

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