Coaxial cable radiating, in particular for the radio communications in the zones locked, provided with properties of resistance to fire

摘要

A coaxial cable radiating or leaks is fireproofed by the arrangement of an organic film 5, which is resistant to heat, in the form of a longitudinal band surrounding the insulation 2 around the inner conductor 1. The longitudinal edges 12, 13 of the strip 5 form between them a gap which is located at the upper after the laying of the cable. The organic film which is resistant to the heat is surrounded by an outer conductor 6, itself - same surrounded by a protective sheath 8. The cable can be provided with a wire carrier 11 which is aligned with the gap between the longitudinal edges of the film 5. Thus, when the insulation 2 back under the effect of heat in the event of fire, the film 5 holds the insulator to the inside of the cable. & br / the invention is particularly applicable to the radio communications in buildings, underground tunnel and spaces. & br / (see appended drawing in bopi) & br / & & br /