Apparatus for the SZ-twisting of power cable conductors with sector-shaped conductor cross section

In apparatus for the SZ twisting of power cable conductors with a sector-shaped conductor section, which includes:

• stationary conductor supplies;
• a twisting closer with a control guide for each conductor arranged ahead thereof;
• a twisting device rotating with alternating direction of rotation, and
• a pulling-off and take up device arranged after the twisting device,
• the improvement comprising:
• (a) the distance between the engagement point of each control guide with a cable conductor and the first engagement point of the twisting device gripping the material to be twisted tensionally from the outside with the material to be twisted being small than, or at most equal to, the length of lay of the material to be twisted, given by the pull-off velocity and the speed of rotation of the twisting device, and being preferably smaller than, or at most equal to, one-half the length of lay;
• and
• (b) the free distance between the twisting device and the nearest device gripping the material to be twisted in the circumferential direction from the outside in a torsion proof manner being very much larger than the length by which a longitudinal section of the twisted material is advanced during an interval of constant direction of rotation of the twisting device.