APPLICATION
Designed to use directly burried into ground. Cables having 0.5 mm. conductor diameter are used for distribution network, cables having 0.63 and 0.9 mm. conductor diameter are used for long distance network.
CONSTRUCTION
- Conductor
Solid annealed copper having the diameter of 0.5, 0.63 and 0.8 mm. (CCITT Yellow Book Vol. III-2-G.541 paragraph, IEC 28 ve ASTM B 3). - Insulation
Dual insulation of cellular polyethylene covered with a solid skin layer of medium or high-density polyethylene compound (BS 6234 Type 03 - ASTM D 1248). - Cable Assembly
Pairs each having special lay length to minimize the crosstalk and capacitance unbalance, are assembled into 10 pairs units. Super-units having 50 pairs or 100 pairs are assembled in these units. - Filling Compound
The water resistant filling compound is applied to the air spaces within the cable core to provide the water-proofness. - Core Covering
A non-hygroscopic dielectric plastic tape having suitable overlap is applied longitudinally or helically over the cable core. - Flooding Compound
Sufficient amonut of flooding compound shall be applied between the core covering material and screen. - Screen (Shield)
A flat aluminium foil coated with polymer on both sides is applied longitudinally over the core covering as screen. - Outer Jacket (Sheath)
Black linear-low density or medium-density polyethylene compound (acc. to ASTM D 1248) is extruded over the armour. - Inner Jacket (Inner Sheath)
Black lineer-low density or medium-density polyethylene compound (acc. to ASTM D 1248) is extruded over the screen.
- Armour
Sufficient number of round galvanized steel wires (R-wire) is applied over the inner jacket to improve the mechanical strength of the cable. Special type of water-proofness tape or flooding compound shall be applied the interfaces between the armour and both jackets (inner and outer).
