สายโทรศัพท์ ภายนอก รุ่นไม่มีสลิง AP 20Px0.65 (20 คู่สาย) เฟ้ลปส์ ดอด์จ PHELPS DODGE เมตร CONSTRUCTION
- Conductor : 0.65mm annealed copper, solid
- Insulation : Polyethylene or Polypropylene
- Pairs : Two insulated conductors twisted
- Layup : Unit construction for cables more than 25pairs. Concentric for cable up to 25pairs
- Corecovering : Non-hygroscopic tape with a high dielectric strength
- Shield : Plastic coated Aluminium tape, thickness 0.2mm laid on with overlap.
The alumium tape is corrugated for every size of cables.
- Sheath : Polyethlene (Black)
STANDARD
- TIS2434/2552 / TOT
APPLICATION
- For exchange area telephone distribution lines,
principally for aerial installation by attachment to a support strand.
It may be used, however, in underground ducts where there is no damage due to mechanical
abuse and no water in ducts and underground