Telecommunication station cables with screened pairs

Telecommunication station cables with insulation and polyvinyl coating with screened pairs are intended for telecommunication station to station connections in multiple system equipment for frequencies greater than acoustic frequencies. These cables make possible the correct operation of equipment in rooms at temperatures varying from -10 to +50 C in cases where mechanical hazards occur in the form of bending or vibrations and from -40 to +70 C in cases where mechanical hazards do not occur. These cables can be laid at a temperature varying from 0 to 40 C. The cable factory is manufacturing cables with screened pairs designated by the symbol YTKSYekp in accordance with WT-79/K-121 technical specifications with the number of pairs: 2-6-7-10-12 and 21. The cable strands are made from soft copper wire (either nonzinc-coated or zinc-coated) with a 0.5 mm nominal diameter. These strands ensure that solid and covered joints can be made. The latter must be zinc-coated and have a rupture elongation in the range of 15% to 30%.