FIELD: electricity.
SUBSTANCE: into a symmetrical unshielded 25-pair cable with a 5e category with improved characteristics and with optical fibres, in the first layer, comprising five pairs, a five-beam polymer separating element is introduced, separating each pair of the first layer from each other, between the first and second layers they introduce a separating perforated polymer tape with overlapping of edges along the entire length of the cable, and between the second and third layers a polymer perforated separating tape is also introduced with overlapping of edges along the entire length of the cable, at the same time, in the second layer, six polymer separating elements are introduced, which occupy the area of six pairs by section and along the entire length, separating each of six symmetrical pairs from each other in the layer, and in the third layer there are five similar separating elements introduced, four of which are separated into three symmetrical pairs between each other in the layer, besides, the fifth separating element separates two pairs from three others, at the same time five separating elements in the third layer are arranged in the form of tubular elements comprising modules with optical fibres.
EFFECT: improved characteristics.
1 dwg
