Sigma 688 LTT

Sigma 688 LTT

Manufacture UTP cables with the new LTT (low torsion twisting) quality standard using proven Komax technology within the Sigma family.

Data transfer rates below 100 Mbit/s will become just as important in the future as those at the upper end of the gigabit range. Today”s challenge of producing a UTP in a stable manner to ensure a transfer rate of 10 Mbit/s will probably become the norm in the future. To ensure the required quality of data transfer, a stable physical cable is necessary. As the mechanical properties are directly reflected in the electrical properties, reliable and stable production on demand is of utmost importance. A constant and continuous lay length, a compact and tight helix, as well as precise dimensional accuracy in the lengths of the individual wires result in a highly stable impedance and minimal delay time differences in the twisted cable. Processing techniques such as twisting with back-twisting make it possible to produce a UTP from two single wires on a twisting machine directly on site in the factory – a twisted cable for the demanding data transfer of tomorrow.

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Sigma 688 LTT Specifications
Specification name Specification value
Wire length, processing on both sides min. 300 mm
Wire length max. 7000 mm
Strip length side 1 min. (Processing set for short open ends) 0.1 mm
Strip length side 1 max. (Processing set for short open ends) 18 mm
Strip length side 2 min. (Processing set for short open ends) 0.1 mm
Strip length side 2 max. (Processing set for short open ends) 28 mm
Strip length side 1 min. (Processing set for open ends, standard) 0.1 mm
Strip length side 1 max. (Processing set for open ends, standard) 18 mm
Strip length side 2 min. (Processing set for open ends, standard) 0.1 mm
Strip length side 2 max. (Processing set for open ends, standard) 35 mm
Wire cross section min. (Processing set for short open ends) 2 × 0.13 mm²
Wire cross section max. (Processing set for short open ends) 2 × 0.5 mm²
Wire cross section min (Processing set for open ends, standard) 2 × 0.13 mm²
Wire cross section (Processing set for open ends, standard) 2 × 0.5 mm²
Wire cross section min. (Processing set for long and different ends on side 1) 2 × 0.5 mm²
Wire cross section max. (Processing set for long and different ends on side 1)
Open wire ends min. (Information without end processing, processing set for short open ends) 15 mm
Open wire ends max. (Information without end processing, processing set for short open ends) 99 mm
Open wire ends min. (Information without end processing, processing set for open ends, standard) 30 mm
Open wire ends max. (Information without end processing, processing set for open ends, standard) 99 mm
Open wire ends min. (Processing set for long and different ends on side 1) 30 mm
Open wire ends max. (Processing set for long and different ends on side 1) 125 mm
Lay length min. 5 mm
Lay length max. 50 mm
Stroke length accuracy Accuracy: ±10%, max. 5mm per pitch on average over 10pitches
Processing outside the specifications Processing outside the specifications upon request. In case of doubt, we will be happy to provide processing samples for your wires.
Hard, tough wires In the case of extremely hard, tough, or thick-stranded wires, processing might not be possible, even within the cross section range. In case of doubt, Komax will be happy to provide processing samples of your wires.
Producible parameters ** Producible parameters depend on pitch, outer diameter, and end processing. Producibility can be verified using the producibility check software or with a feasibility test.