FIELD: electricity.;SUBSTANCE: symmetrical four-pair cable comprises polymer-insulated strands twisted into pairs with outer polymer coating, each two pairs are placed into B-forms of modules, besides, in each window of a B-form module there is one pair, windows of each B-form module are directed into opposite directions, and each B-form module is made of a perforated polymer tape, ends of which are closed in the middle of the tape to make windows of identical size along the whole length of the cable.;EFFECT: reduction of interference between pairs.;1 dwg
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