Prysmian S.p.a.

Pirelli Cavi E Sistemi S.p.a.

Mario Genovesi

Simone Manfredi

Marco Bacchini

Francesco Magnani

Danilo Caslini

Method and Equipment for Installing a Power Cable in a Deployment Site The present disclosure relates to a method for installing a single power cable span in a deployment site comprising a rail for supporting the single cable span by trolleys, the method comprising the steps of providing a conveyor belt outside of the deployment site, the conveyor belt having a plurality of locations set at a predetermined distance one from the other along a longitudinal movement direction of the conveyor belt and moving integrally with the latter; repeating the following steps until the single cable span reaches a predetermined position while the conveyor belt is moving, positioning a first part of a holder at one of the locations; while advancing the single cable span, laying a portion thereof on said first part of the holder positioned at the location moving with the conveyor belt; connecting a second part of the holder to the first one to lock the cable span portion in between; while the cable span portion locked by the holder is leaving the conveyor belt, removing the first part of the holder from the location moving with the conveyor belt. According to another aspect, the present disclosure relates to an equipment for the installation of a single power cable span in a deployment site.

Method and equipment for installing a power cable in a deployment site

The present disclosure relates to a method for festooning a power cable while deploying it in a deployment site comprising a rail having a start and an end, the method comprising the steps of: providing the cable with a plurality of cable holders slidably movable along the rail, each two consecutive holders being spaced at a holder predetermined distance on the cable; providing a festooning apparatus after the start of the rail, the festooning apparatus comprising a lowering device movable between a raised position and a lowered position; deploying the cable along the rail by repeating the following sub-steps: engaging on the rail one holder after the other and moving them thereon; when one holder oversteps the festooning apparatus, operating the festooning apparatus to move the lowering device from the raised position towards the lowered position, thus engaging the cable at a point between two consecutive holders; when the lowering device reaches the lowered position, obtaining a sagged portion of cable and a shortening of the holder predetermined distance; operating the festooning apparatus to move the lowering device from the lowered position towards the raised position, thus disengaging it from the cable; fixing the shortened holder predetermined distance between two consecutive holders at each side of the sagged cable portion; and advancing the sagged cable portion along the rail.

Method for festooning a power cable

An embodiment describes a method for installing a single power cable span in a tunnel having an entrance and an exit. The method includes positioning a head portion of the single power cable span near the entrance and laying the single power cable span in the tunnel past the exit. The laying of the single power cable span comprises repeating a plurality of sub-steps until the head portion reaches an endpoint outside the tunnel. The plurality of sub-steps includes connecting a trolley at the entrance in a slidable manner on a rail longitudinally extending along the tunnel between the entrance and the exit, joining the trolley to a pulling rope and to the single power cable span, and moving the trolley along the rail by pulling the pulling rope by a predetermined length. Another embodiment relates to an equipment for installing a single cable span in a tunnel.

Method and equipment for the installation of a power cable in a tunnel

An apparatus for laying underground electric cables, in particular for high-voltage lines, having a vehicle towable along a trench and carrying, on a first van, a first deposition unit adapted to form a base layer of inert material for heat dissipation at the trench bottom. Mounted on the first van is a guide structure engaging the cable for laying it on the base layer previously compacted by a vibrating plate. A second van carries a second deposition unit forming a covering layer of inert material upon the previously laid-down base layer and cable.

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Cremona, Italy

Mario Genovesi