Power cable with metallic shielding tape and water swellable powder.

摘要

A high voltage electrical power cable with a longitudinally folded, smooth or corrugated, metal strip (8) around a plurality of layers around the conductor (2) and a water swellable material (11) at least at the adjacent edges of the strip (8). Preferably, the water swellable material is included with a polymeric material which is flowable at a temperature at least as low as 100 DEG C, the polymeric material has a 100 gram needle penetration value in the range from 50-100 tenths of a millimeter at 25 DEG C and the water swellable material has a particle size not greater than 200 microns.