EoW November 2009

Power cables Cable rotating machines for up to extra-high voltage Precise manufacturing techniques are essential to ensure the reliability of high voltage power cable and Pourtier, of the Gauder Group, has developed a variety of equipment for different stages of the process. The Pourtier rigid strander line for segmental core is designed with tension control on each wire, automatic correction between full bobbin and empty bobbin and adjustment from the control desk during operation.

Sophisticated rotating heads provide the necessary compacting, shaping and pre-spiralling of the conductor, while the special design of the compacting and shaping rollers meets the strict requirement of high voltage power cables. The line includes all possible means to secure complete water tight- ness of the segment. A side-loading system allows bobbin preparation during operation, which reduces down time and increases productivity. Pourtier’s drum twister integrates all the necessary parameters for the stringent production requirements of high voltage power cable, including a smooth deviation angle for segments as well as for the laid-up conductor (resulting in a longer take-up frame). Consistent tension on each segment is of the utmost importance for laying-up of Milliken cable to ensure a perfect geometry of the finished conductor.

Rotating take-up cradle has a reduced deviation angle for Milliken cable ▲ ▲

A special correction system is also used to automatically adjust the relative position of each segment before entering the laying-up block. Before entering into the stranding block, several tapes are longitudinally applied between the segments. When laid-up, the segments are taped together with semi-conductive tapes and the cable made watertight. Pourtier – Gauder Group – France Fax : +33 1 64 26 61 10 Email : sales.pourtier@gaudergroup.com Website : www.gaudergroup.com Reels for power cables A Appiani srl is an ISO 9001:2000 worldwide manufacturer and supplier of high quality and cost competitive steel reels for the cable and wire industry. In the last few years the company has increased its capacity for the production of drums and reels for cables, rope and strands. In particular, the company has focused its investments on the development of reels for power cables, and new solutions for the manufacturing and shipping of large reels.

The design of new reel types and the evaluation of the best solutions to meet customers’ requirements have been supported by the implementation of 3D software and FEA simulations. Those tools are also suitable to evaluate reel capacity, and prevent possible ruptures in the event of heavy-duty applications. The Appiani range of products includes structural reel type BCS and corrugated BFA type or fin flanged reels. The BFA reel is also offered with a smooth internal flange and drum surface that is suitable for medium and high voltage cable. Special surface treatments are available, such as hot-galvanizing according to UNI EN ISO 1461, to suit power cable applications in tropical and humid high-temperature environments. Reels are also available in inox for umbilical and oil/marine applications. A Appiani srl – Italy Fax : +39 030 9382425 Email : info@appiani.reels.it Website : www.appiani.reels.it

Hot-galvanized dismountable BCS36 reel ▲ ▲

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EuroWire – November 2009