Telephone exchange cable TSVng(A)

1 Conducting cores - single-wire from copper soft wire. 2 Insulation - of insulating polyvinylchloride plasticate. 3 Pairs or triples - twisted from insulated conductors of different colours.

4 Elementary bundles - twisted from pairs or triplets, coloured with binding thread. 5 Core - twisted from elementary bundles. 6 Belt insulation - polyethylene terephthalate film laid lengthwise.

7 Shield - aluminium-polyethylene tape laid longitudinally. A tinned copper wire is laid longitudinally under the screen. It is allowed to use the screen made of foil film or metallised film.

8 Envelope - polyvinylchloride plasticate, not spreading combustion.