Results of investigations on the effect of shape and width of a highvoltage discharge electrode (HTDE) in a polymer-film activator on the process efficiency were presented. Film of polyethylene II/020/FO type was activated at a transport velocity of 1.333 m/s with the unit energy of partial discharges equal to 5 kJ/m2. It was demonstrated that the width of HTDE should be appropriately increased up to a limit value of 30 mm with the increase in the activation velocity. A correct selection of this width makes it possible to reduce the energy consumption of the activation process by to 30%. The power demand of an activator of polyethylene film without additives does not exceed a value of 3.4 kW in the case of a properly designed HVDE.
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