Continuous production of XLPE and EPR insulations on medium voltage cable cores
The insulation process is executed by a well-proven, triple layer crosshead equipped with an independent centering unit for each material flow channel distributors. The three water cooled extruders, MHV type are designed to process sensitive polymer and elastomeric materials at a low melt temperature. Each heating/cooling zone is equipped with a separate heating and cooling element, directly applied to the barrel. Proportional valves connect directly to the PID control guaranteeing very tight and stable melt temperature tolerances.
Controlled temperature stability at any time
Cross-linking of the insulation materials is done by an inert gas (Nitrogen) pressurized within a catenary tube and heated-up by 8 independent zones. The production parameters set-up is automatically adjusted and homogenised by the SAMP MHV-CAL software to reach maximum production speed while maintaining a constant insulation thickness. The cable is cooled by a water circulation system, optionally also by gas if completely dry processing is required.
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