Multipurpose CV Line

The Maillefer Multipurpose CCV Line is designed for continuous insulation of XLPE and PP-TPE insulated cable cores. The conductor is insulated by well-proven Maillefer extruders and triple crossheads.

The XLPE insulated cable is cured in an inert pressurized atmosphere by heating the cable to the cross-linking temperature. The maximum curing speed is achieved by computing the temperature profile of the tube so that the cable surface is kept at its maximum stable temperature throughout the heating zone. The CV tube operates under pressurized nitrogen atmosphere, and cable cooling is done in the cooling tube either by gas or water circulation.

The PP-TPE insulated cable is cooled in an inert pressurized atmosphere first by nitrogen and then by water. The maximum speed is achieved by computing the temperature profile of the tube so that the cable surface is kept at its optimum stable temperature throughout the dry cooling zone. The CV tube operates under pressurized nitrogen atmosphere, and cable cooling is done in the cooling tube either by water circulation.

The conductor is paid off to the line continuously from a double pay-off. The smoothly operating accumulator is used to make conductor jointing possible during pay-off reel change. Conductor tension is controlled and kept at a low level before the high stability metering capstan. The capstan is the line speed master point. The line is equipped with a by-product separator. After the end-seal, twister and haul-off caterpillar the cable turns back over a turn pulley to the double take-up station.

Before the triple crosshead an inductive preheater can be used to increase the curing capacity of the line for XLPE cables and PP-TPE cables to create optimal adhesion condition.