Description
‘In-line pair twisting and unit stranding with periodically reversed lay direction (SZ),’by Dimitri R. Stein, SZ twinning and stranding in line of copper conductor telephone cable subunits and units offers substantial economic benefits compared to existing technologies. The main advantage of this method is the fact that the pay-off bobbins are stationary and are located outside of the stranding machine. Therefore, continuous operation at high speeds is possible. The SZ stranded conductor meets all applicable REA requirements, including limits for near-end cross-talk.