Longitudinally watertight electrical cable

摘要

The invention relates to a longitudinally watertight electrical cable, preferably a telecommunications cable having a monitoring function, especially a signal cable, which can be used, for example, as a strain relief cable. The cable according to the invention is characterised in that expanding yarns are incorporated, running longitudinally, into the core and into the gaps in a twisted conductor assembly, and an expanding felt strip with a plastic coating located on the outside is arranged above the twisted conductor assembly, and in that a concentric screen, which is located above an inner casing, consists of a plurality of conductive individual wires which are arranged parallel and over which a conductive opposing helix is arranged, with an isolating layer arranged above it between the concentric screen and the outer protective sheath. <IMAGE>